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ATI 140 038

UNCLASSIFIED

(COPIES OBTAINABLE FROM ASTiA-OSC)

LACQUER AND CHEMICAL CORP«, ALAKA RESEARCH LABS.» BROOKLYN»

N.Y» (4TH QUARTERLY REPORT)

FOURTH QUARTERLY REPORT OH FUNGUS RESISTANCE OF PLASTICS - NOV 17, 1951 TO FEB 8„ 1952

RU6GERI, S,; ATLAS» R« WAIT2E J.5 FEB»52 71PP TABLES

USN CONTR. NO, NORD 11215

PLASTICS ** EFFECT OF FUNGI MATERIALS. NON-METALLIC (8) FUNGI PLASTICS \2)

UNCLASSIFIED

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FOURTH QUARTERLY REPORT

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FUNGUS RESISTANCE OF PLASTICS

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BUREAU OF ORDNANCE DEPARTMENT OF SHE. NAVY

MOISTURE AND FUNGUS PROOFING SECTION MATERIALS AND PRESERVAT IK)N BRANCH RESEARCH AND DEVELOPMENT DIVISION

CONTRACT NOrcL 11215

"by

S* Ruggeri and R« Waitse Atlas

Period covered? November 179 1951 to February 8, 1952

ALAKA RESEARCH LABORATORIES division of

LACQUER AND CHEIklCAL CORPORAT ION 214 - 40th Street Brooklyn 32, N«Y.

February 15s 1952

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TABLE OF CONSENTS

FOREWORD • • e •-?.* « ft * • ••*•« ««•••.<>, • » « 6 -. o o * * . %. ••••••• •.«-« •••••»'•

FDHGiHEfiiENESS ÖF PLASTIC LäESNA&ES- (PETB.L-D1SH METHOD} e-«, ö > •&•««« » * ••« »0 o« •»••••••••.••••••••• • 24y

Introduction .i»«.»ö«. ..oo»4ode:»»-e »*••»•»••«»»»•»»*»,**• 24»

Materials *ao»ei«.»e4»*e = *«*»?»<»«*»*.•***••*••*•*•*••• 24»

Experimental Procedure ....... • . •«. • * i 250

Evaluation of Results «.«... ................ 250

Interpretation of Results for Determination of Fungine rtness •. * * « 251

Summary of Observations o« .......A.»....... 261

Surface Growth Alone • 0".*>' ••»•••»»« • • • • 261

Surface and Edge G-rcwth ...»••<>••• ........ 261

FOTGINERTNESS OF PLASTIC LAMINATES (HUMIDITY-EXPOSURE METHOD) ................ «^ 263

Introduction »«•••••«»«•»»•••••••«•••••••••*.•••••«• «oo

Materials ..^.^........... 263

Experimental Procedure 264

Evaluation of Results ......................... 264

Interpretation of Results for Determination of Funginertness -- »....,..<>• 265

Summary of observations «.«. .a ......... ••••••«••«•• «••• 302

Surface Growth Alone .» ..........«,.*..«...»• 302

Edge Growth Alone ...••.»•••• 303

EUUGIHERTITSSS OF THERMOSETTING MOLDED PLASTICS (PETRI-DISH METHOD) ., • * 304

Introduction • 304

Materials 304

(Continued on next page)

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Experimental Procedure *••«••-•§• *•••*••••-«-•..».«.*•••• a,»-*•......•.• • • • • • •« 305

Evaluation of Results »»«--».-.o-«-«.-« • • •? .*...•».....* •••••• 3ÜS

interpretation of Re.sults for Dete rnvina t i on of Funginertne as. •, .< • • -„.. • «**.*•••»••* 307

-Summary of Qfcservat ions c «•<>«••• <> ••«•« ee «•••••».*•••• > 316

Surface Growth. Alone a ».»••••• • .....#.......• e • 31.6

Surface end Edge Growth «ao»***»*» •• • • ••••••••••••*•* 317

PARTIAL COMPARISON OF REStTLTS OBTAIN&D- F£ THE TWO TEST METHODS ', *.. ft ft ft * *» # ft' • •••«»•••••• •••*<& 318

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ifüglGräE!HEHfe.SS OF PLASTIC L&MmfrBS ~~ (PETRI-DTSET METHOD) *~**'

Introduction

Further work completed under this study has been a cent in;»

uation, of tests of fungus resistance of available plastic laminated

materials following the Petri~Dish culture test procedure as

outlined in the "Fuhginertness Requirement and rest, for use in

EIL-I-631A (as completed 29 January 1951)«, furnished by the Bureau

of Ordnance with letter dated 16 February 1951. Earlier woric

covering the phase of the study was reported in the First Quarterly

Report (pages 4-25), the Second Quarterly Report (pages 28-77)*

and the Third Quarterly Report (pages 124-136}*

' Materials

The materials evaluated in this study include the following

laminated, thermosetting, plastic materials as approved under the

following specificationst

Specification Type Filler

MII^P- MIL-P* MII-P- MIL-F- MIL-P- MIL-P-

•9 97 A 15037A •15047A •3115A •3115A •3U5A

MIL-P-15035A MIL-P-15035A MIL-P-15035A MIL-P-15035A

GSG GMG NPG PBG PBE PBE-P

FBM FBQ FBE FBI

Glass Cloth Glass Cloth Uylon Cloth

Paper Paper Paper

Cotton Fab« Cotton Fab» Cotton Fab« Cotton Fab«

Resin

Siiicone Melamine Phenolic Phenolic Phenolic Phenolic

Phenolic Phenolic Phenolic Phenolic

Grade

General General General General

Electrical Electrical. Punching

•'Mechanical, General Electrical, Fine Machen

ing

-249-

Exper imenta! Procedure-

The experimental procedure has "been explained in u.etail in

the First Quarterly fieport, pages 5S6, and 7«

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At the end of the 81 day incubation period, each specimen

wa/s examined separately for growth oh the surface and for growth

on the cut edges and rated as follows;

Observed Fungus growth on the specimen

No growth Traces of growth (*) Slight to moderate growth: partial coverage Moderate growths considerable coverage Abundant growths complete coverage

Rating

0 1 2 3 4

(*)Traces of growth are defined as scattered, sparse fungus growth such as might develop from an unusual mass of spores in the original inoculum, or upon an occasional extraneous bit of debris« (Contihous cobwebby growth extending over the entire surface or edge of the specimen, even though not necessarily obscuring the specimen, was rated as 23)

Table 19 pages 253 through 255, lists the observations on

the individual replicates of the unconditioned specimens and the

numeric rating of each replicate both for surface and edge growthe

Table" 20 pages 256 through 258, lists the observations on the

individual ^pliostes of the conditioned specimens and the numeric

rating of eaeh replicate both for surface and edge growth«.

-250-

Interpretation off Results for Determination off Eunginertness

For a material to "be considered funginert. it shall not

support fungus growth; this shall "be due to absence of nutritive

.substances in the material and not to presence of a fungistatio

agent« The absence of a fugitive fungistatio agent was determined,

from the results on the specimens which received the conditioning

of 6 hours at 85° G*

On the basis of the numeric rating of the fungus growth on

the six specimens for each sample of plastic laminate being

evaluatedj the following criteria were used for the various degrees

of fungus resistance;

^ i^Jl^&öfJd". *" wiiere a-fc least 2 of 3 specimens were rated 0 or 1 wherTtested as received and at least 2 of 3 specimens were rated 0 or 1 when tested after baing conditioned«

2) EMi!yjllLJîÄii.^5Â° ~ where at least 2 of 3 specimens were ra'ted 0 or i" when tested as received and at least 2 of 3 specimens wer3 not_ rated 0 or 1 when tested after being conditioned*

®) BSBiaSg nSu_3QQPtible ~ where at least 2 of 3 specimens were not rated 0"or*1 when tested as received and at least 2 of 3 specimens were not, rated 0 or 1 when tested after being conditioned»

Since it has not been determined whether these criteria will

b© applied to surface growth alone or to surface growth together

with edge growths separate ratings have been assigned to the

specimens based on surface growth alone and on surface and edge

growth considered t^gothea?»

-251-

Ia*)le 21 pages 259 and S60* lists' the classification, of the

plastic laminates, tested;, "based on the ratingd considering surface

growth, alone and on the ratings considering surface growth together;

with edge' growth,*

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-252-

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( •'

Sttmmary of Observations

The following samples showed no* growth or traces of growth on ail six repli* cates:

Manuf*

' #13*" #13

Designation Grade XiX-13 . PBE

LE-13 ^BE

( s

She following sample showed traces or slight growth on all six replicates;

The following samples showed slight growth on all six replicates?

The following samples showed slight or moderate growth on all six replicates:

The following samples showed moderate growth on all six replicates:

The following sample showed abundant growth on all 3ix replicates:

#» Xi-324 PBG-

fig I4 #35

221-A 6022 XXXP-26

L

FBE PBE PBE-P FBI

#12 #16

XXX-13 XXX

PBE

#12 #16

LE-13 L

FBE FBI

#? C-525

(Surface and Edge Growth)

FBM

•The following samples showed no growth or traces of growth on all six replicates:

The following sample showed traces or slight growth on all six replicatesi

Manuf

#13 #13

#i

•Designation ftrad.9

XXX-13 LE-13

PBE FBE

FBI

(

The following sample showed slight growth on all six replicates: #14 XXXP-26 PBE-P

-261-

The following sample showed traces, slight or moderate growth on all six replicates*.

The following samples showed slight or moderate growth on all six replicates;

Manuf.

J-7

Designation GxaAa.

XX-324

The: following sample showed slight, moderate or abundant growth on all six replicates.*.

The following sample showed abundant growth on all six replicates:

#12

P

xxx-13

PBG

n 221-A FBE #9 6022 PBE #12 EE-13 FBE #16 XXX PBE #16 E FBI

PBE

C-525 FBM

-262*-'

TOTGiftEfePHESS Gt.PLASTIC, LAMINATES

.Introduction

Wor-fc during this .period has liieren the testing of 34

additional plastic laminated materials for fungus resistance»

following the Humidity-Exposure Method as outlined in paragraph

4«2 of "Draft of BuOrd Specification 52T15 (Ord), rev, draft*

Rele-, of 15 August 1950", furnished by the Bureau of Ordnance

with letter dated 17 January 1951« Earlier work covering

this phase of the study was reported in the Second Quarterly

Report (pages 78-120) and the Third Quarterly Report (pages 137

- 201);

Materials

The materials evaluated in- this, study include the following

laminated, thermosetting, plastic materials as approved

under the following specifications:

Specification Type Filler

MII-P-997A GSG Glass Cloth MIL-P-15037A GMG Glass Cloth MIL-P-15047A NPG Nylon Cloth MIL-P-3115A PB» Paper MIL-P-3115A PBS Paper MIL-P-3115A PBE-P Paper

M1L-P-15035A FBM Cotton Fa ID« MIL--P-15035A FBG Cotton Fab0 MIL-P-15035A FBE 6out-on Fab« MI3>P~15035A FBI Cotton Fab»

Resin

Silicone Melamine Phenolic Phenolic Phenolic Phenolic

Phenolic Phenolic Pheriolic Phenolic

Grade

General General General General

Electrical Electrical; Punching

Mechanical General

Electrical Fine Ma-ehinlr

ing.

•263«

Experimental Procedure

The experimental procedure has been explained in detail

in the Second, Quarterly Report, pages 78 through 81,

Evaluation of Results

At the end of the incubation period the watch glass \*?as

removed and the rack taken out of the jar. The separate

pieces of string (controls) vjere examined for fungus growth

(visible to the naked eye)« All of the controls included in

this set of tests developed profuse fungus growth*

Each of the 4 specimens, exposed without attached cotton

string, was examined (with the aid of a 7X "Flash-O-Lens"

magnifier) for fungus growth. The percentage of area covered

"by fungus growth was noted for each of the two surfaces,

two side edges, top edge, and "bottom edge»

Each of the 4 specimens, exposed with attached cotton

string was examined for fungus-growth (visible to the naked

eye)- extending from the cotton string» The maximum extent

of the fungus growth from point of contact with the string

was noted for .each of two surfaces and each of the two side

edges, of each specimen«

Table 22 pages 267 through 300, lists the observations

on the individual replicates.»

-264-

Interpretation of Results for Determination of Funginertne3S

For a material to be considered funginert it shall not

support fungus growth; this shall be due to absence of

nutritive substances in the material and not to presence of a

fungistatic agent. The absence of a fungistatio agent was

determined by the fungus growth extending from the cotton

string on those replicates exposed with string attached»

On the basis of the percentage of area covered by fungus

growth on four of the eight specimens and the extent of fungus

growth from a known nutrient source on the remaining four of th£

eight specimens for each sample of plastic laminate being

evaluated! the following criteria were »sea. for the various

degrees of fungus resistances

1) FUflGlNERJT - where none of the replicates; exposed without attached cotton string, shows more than 2fo fungus growth and where fungus growth extends at least 1 mm from the string on at least 2 of the 4 replicates exposed with cotton string attached»

2) FUI^^TÂ/Tyrc- where none of the replicates, exposed ._.., . _ wi^tl0ui. attached cotton string, shows

-more that 2fo fungus growth and where fungus growth does not extend at least 1 mm from the_ string oh at least 2 of the 4 replicates exposed with cotton string attached« •

3) FUNGUS SUSCEPTIBLE - where at least one of the four replicates, exposed without attached .cotton string, shows more than 2fo fungus growtho

In table 22, pages 267 through 300 are listed the ratings

for the 34 plastic laminated materials reported in this

section« A separate page has been set aside for each „g^s,.

(

sample and eaeh page presents both the original data and the

fungus resistance rating both for surface growth and for edge

growth» 'The Humidity-exposure Method permits a separate

evaluation "based on the edge growth alone, hence the separate

ratings« In this method the edge growth is tsrao edge growth

in contrast to the Petri-dish Method where edge growth could

in reality be deriving its nourishment from the agar and

merely extending over the edges of the specimen»

- 266 -

Sheet 1 of 84

SABEE 22

FÜNGÜS RESISTANCE OP PIASTXC LAMINATES

(HUMIDITY EXPOSURE METHOD)

Grads;- FEE .Manufacturer, and Desigiration^ #6

Speioimensj,vithout P-^j;^ggjattajêdg_

MWJM"*JCL

©-

• 03 O

•H , H

Pi ; f

Growth on Surfaces \

Growth on Edges

Relative Profusion

fo of area

covered

Re3.atlve Profusion of Growth fo of area

covered 2 sides Top Bottom

1057 Traces <2fo Traces Traces .Moderate <. 2$

1058 Traces <2fo Traces Traces Traces < Zfo

1059 Traces <2fo Traces Traces Moderate <2fo

1:06:0 ; Traces <2fo Traces Traces Traces <2fo

Specimens with strings attached?

©

CO o •H iH P< <?

Maximum Extent of Fungus Growth from Point of Contact with String

Surfaces Side Edges

1061 ^Tum 1 mm

1062 <vrma. 2 mm

1063 3 mm 1 mm

j 1064 4 mm 1 mm .,

Rating (See pages 264 through 266 for explanation);

Based on surfaces alones

Based on Edges alone:

Funginert

Fung inert

267 -

TABLE 22 (CONTINUED) Sheet 2 of 34

FUNGUS RESISTANCE ÖF PkAS-TTC. IAMIN&TES

:(;HÜM3I)iX!Y EXPOSURE METHOD)

grades £BG Manufacturer and Designat ions #7

Specimens without strings attached;

IX-324

Rep

lica

te

Growth on Surfa ce Growth on Edges

Relative Pr ofusior

% of area

covered

Relative Profusion of Growth fa of area


953 Traces <c 2% Slight Slight Moderate 2fo

954 Traces <2>; Slight Traces Slight 2 fa

955 Slight 2fo Slight koderate Mo de rat o 2fo

956 Traces <l2fo Slight Slight Moderate 2fo

Specimens with strings attached:

CD

CO o

'H •-! Pt

Maximum Extent of Fungus Growth from x'oint of" Contact väth String

Surfaces Sice Ed&e s

95? 4 mm 2 mm

958 5 mm 3 mm

959 5 mm 2 mm

960 3 mm 2 mm

Rating (See pages 264 through 265 for explanation):

Based on surfaces alone; Fur]=>inert

Based on Edges alone: Fungiriert

•268-

f^—if^f , t j^,^.— -. »m—w Â •

Sheet 3 of 54 TABLE 22 ioomimm)

FUNGUS -KE3IRTJÜSGB OF PLAS'UIG LiUAIKAi'ES

{'HUMIDEQY EXPOSURE MMLQD)

Grade: FBM Manufa;gtur e r and des ig-nat;ion; #7

Specimens without. ,:strings ,attached;

C-525

•- = +3 cd o

•H H PH CD

Growth on- Surface i Growth on Edges- . — - -

Relative Profusion

$ 0-f ; area

co-vered

Relative Profusion of Growth fo'Of area

covered 2 sides 2 op Bottom

1009 Moderate 60$ Moderate Moderate Moderate 50$

1010 Abundant 80$ Moderate Abundant Abundant 70$

1011 Abundant 75$ Abundant Moderate Moderate 75$

1012 Abundant 85$ Abundant

1 Moderate Moderate 75$


CO

cd o

-H i-\ P< CD


Surfaces Side Edges

1013 8 mm 3 mm

1014 7' mm 2 mm

1015 12 mm 4 mm

1016 ..

7 aim 5 mm

Rating (See pages 2 64 through 2 66 for explanation):

Based on surfaces alcne:


Susceptible

Susceptible -269-

a

She,et 4 of... 34 TAKES 22 -('COHT-IJSUSD'J

FQHGÜS RESISTANCE OF PEPTIC LklviIR*TES

(HUMID Bit EXPOSURE METHOD)

Grade: PBE Manufacturer and Designation: #9


6022

CD -P as ' o

'H rH P<

Growth on Surfaces Growth on Edges

Relative Profusion

fo of area

covered

Relative Profusion of Growth fo of area


961 Traces < 2fo Traces Traces Slight <<. 2fo

962 Traces <. 2fo Traces Traces Slight <^2fo

963 Traces < 2fo Traces Traces Slight ^2fo

964 Traces <_2cß> Traces Traces Slight <2f.

Specimens with strings attached;

(—-as r -p CO o

•H r-K Pi <D

Maximum Extent of Fungus Growth fr_om Point of Contact with String

Surfaces Side Edges

965 5 mm 4 mm

966 6 mm 4 mm

967 6 mm 4 mm

968 6 mm 3 mm

Rating (See pages 264 through 266 for explanation)'

Based on surfaces alone:


Funginert

Funginert

-270-

a>

m —a*E

SAN Sheet 5 of 34

MLE 22 (CONTINUED)

FMÜS RESISTANCE OF JPLKSTIC iLAklMES

('HUMilDSY ££J?.QSJfcü3. AäE-HOD)

Grad ei F"BM Mamifagtare r _agd p e slgna .t 1-on; ^10

Specimens; without strings attached*

0*30

CD = +3

cö o

•~H

; i-l : P4

CD

Growth oh Surfaces). Growth on Eöge.s.

Re-l;at:ive !

Profusion-, . % of

area •cove.red

ilelati-vs Precision of Growth:" fo Of . area

covered • 2 sides Top Bot torn

777 Moderate : 60 f0 Moderate Mode-rate Moderate 2>Sfo

778 Moderate eofo Moderate Moderate Moderate ZQfo

779 Moderate 45$ Moderate Moderate Moderate 35%

j 780 Moderate 70f0 Moderate Moderate Moderate 35$

Specimens with strings attached.?

«r

ca 0

•H r-i

a?

Llaxiuvi-n Exigent of Fungus Growtb. fr-jm Point of Coircact with Suring

Surfaces Side Edges

781 5 mm 4 mm

782 5 mm 4 mm

783 7 mm 3 mm

784 3 mm i 3 mm

' 1 Rating (See pages 264 through 266 for explanation).;

Based on surfaces alone: Susceptible

Based on Edges alone: Susceptible •271-

giiui «_••••• Mjwiyw

1L

ft

Kr

K

Sheet 6 of 34

T^B'EE 22 (CONTINUED)

FUNGUS RESISTANCE OF PIAS TIC LAMINATES

(BUMIDITY EXPOSURE METHOD)

Grade j FBG ]î^fa2Êê>?.„ÂA®MMli$ij2SL: #10

-S-pe.c.irne&s without_ stLrlng.^^t_tach=ed£

CE-34

; CD

cd o

P< CD


Relative Profusion

fo of area

covered

Relative Profusion of Growths fa of area

covered ; 2 sides Top Bottom

825 Moderate 5% Moderate Slight Moderate 15$

826 Moderate 15 fo Moderate Moderate Slight 10$

827 Moderate . 15$ Moderate Moderate Moderate 40^

828 Moderate .20$. Moderate Moderate Moderate 25fo.

Specimens with strings attacheds

1 Rep

lica

te

Ma-rimum Extent of Fungus Growth from Point of Contact with String

Surfaces ' Side Edges

829 7 mm 4 mm

830 3 mm 4 mm

831 8 mm 4 mm

832 1

3 mm 8 mm


Based on surfaces alone; Susceptible

Based on Edges alone: Susceptible -272-

SaifliiiMnMmn iwumm

Sheet 7 of 34

\

#

TABLE SB' (; GONT'INUEB),

"FUNGUS; RESISTAIGE OF PLAdTIC LAMINATES (HUMIDITY EXPOSURE METHOD.}

Gradet FBI Mahufac.turer and Designati-on;

specimens-.wiJhmVb, strings attached;

L-40

©

CO o

•H rH Pi CO

Growth oh Surface's Growth on Edges

Relative Profusion

io of area

covered

Relative Profusion of Growth;: fo of :

i area covered 2' sides.

• Top Bott an

873 Moderate ic$.; , Moderate 5

Moderate Moderate. W$

874 Moderate 5% Moderate Moderate Moderate 10fo

375 Moderate üfo Slight Slight Slight 2% •

87 6 Moderate 1 . , ,

5fo Slight Moderate Moderate 5fo


CD -P

CO o

•H <-) 9* <x>

, ccj

Maximum Extent 'of Fungus Growth from Point of Contact with String

Surfaces Side Edges

877 2 mm 4 mm

878 3 mm 2 mm

879 1 mm 1 mm

880 .1 mm 1 mm




Susceptible

Susceotihle -273-

mssmsmmmmia^x

Sheet 8 , of 34

<?

TABLE 22 (COMltal^)

FUNGUS RESISTANCE OF PLüS'TlCJLaJVlIWATES (.HUMlDli'Y EXPOSURE -fe-HQfi'J;

Grade; PBG Manufacturer ;and Resignation-; fxj.


210

<r> a o

•H r-i PA CD

<3


Relat ive Profusion

fo of area

covered

Relative Profusion of Growth; fo of area

covered • 2 sides Top Bottom

785 Moderate 5$ Moderate Moderate Moderate 40$ '

78.6 Moderate 10$ Moderate Moderate Moderate 15$


788 Moderate» 20fo Moderate Moderate Moderate 30$


•05' '

CO o

•H r-i P< CD

ad

Maximum Extent of Fungus Growth from Point of Contact vtfith String

Surfaces Side Edges

789 8 mm 7 mm

790 11 mm 8 mm

791 7 mm 6 mai

792 10 mm 3 mm i

Rating (See pages 264 through £66,for explanation);


Based on Edges alone: Susceptible »274=

g«fc mjKSBBggif %+—y

Sheet 9 of 34

IC .'ÜA-B1LE :22- ;(,CQNTIMrEI>)

FUNGUS RESISTANCE OF PtÄSTTC LAfclBATiSS '(HüllIDIi'Y EXPOSURE METHOD)

Grades PBE Manufacturer and Dos-ignatlorH #11

Specimens without strings attQg'jladl.,

216

(St

CD

CO tt

•H H Pi CO


Relative Profusion

fo of area

covered

Relative Profusion of Growth? fo of area


835 Moderate Sfo Slight Moderate Slight Zfo

834 Slight Zfo Slight Slight Slight Zfo

835 Slight 2fo Slight Slight Moderate Zfo

836 Traces i .

Traces Traces Traces -<2$


CO -p C3 Ö

•H r-l P< CO

02 ,

Maximum Extent of Fungus j Growth from Point of Contact with String

Surfaces Side Edges

837 4 ram 7 mm

838 5 mm 2 mm

839 6 mm 6 mm

840 4 mm 4 mm




Susceptible

Funginert »275-

msa «BhJWwuymaao*» <ttwpwflw^ WN;t—"•

•nhjiiWti—i .WHIII

i« \

id*

Sheet 10 of 34

TABLE 22 (CÖ&MUEI).}

FUNGUS RESISTANCE 0? PLASTIC I^JNAIES (HtMIHDrüY iLCPOSUi^-METHOD)

Grade; GSG Manufacturer, and Designation,;. #12

Specimens without strings-,attached:.

GBÛ2S

Rep

lica

te

Growth on Surfaces Growth on Edges Relative Profusion

fo of area

covered

Relative Profusion of Growth: fo of area

covered = 2 sides Top '.. Bottom

793 None $fo •—• ——

Traces None Traces <2fo

794 Traces <2% None None None Ofo

795 Traces ^Zfo None None Traces <1 2%

796 None Qfo Traces None Traces <L*fo


Rep

lica

t*


Surfaces Side Edges

797 2 mm 3 mm

798 2 mm 1 mm

799 2 mm 2 mm

800 1 mm 1

2 mm

Rating (See page3 264 through 266 for explanation)

Based on surfaces alone: Funginert-

Based on Edges alone: Funginert «276-

?s^*^*t*&^&^-«V<!r*v

•' -" ~*"T~mfwn i nr •

V

Sheet 11 of 34

TAIBIE 22 (CQNTIJSUB3)}

FUNSUS RESISTANCE OF PLASTIC LAMINATES CHBIAIDECY EXPO-SÜßE METHOD)

Grade! GMG Manufacturer,ana Designation? #12

Specimens without strings attached:

GB 128M

CD"'

CO O

•H rH

<D OS


Relat ive Profusion

fo of area

eovered

Relative Profusion of Growths $ of area

covered 2 "sides Top Bottom


802 Moderate 5$ ' Moderate Moderate Moderate 10$




gj—" t -P a o

•H

Cn 03 a;

•• • - "• • —- • • •• - -i


Surfaces Side Edges

805 7 mm 7 mm

806 2 mm 3 mm

807 3 mm 4 mm

808 L .

4 mm i

5 mm




•KSüafiÄäE^W

k r ? €

G

4p

Sheet 12 of 34

TABLE 22 (-eONTIiWB]))

FUNGUS RESISTANCE OF PLASTIC IAMINATES (HÜMXDIDY EXPOSURE MSTHOÖ)

Grades NPG Manufacturer and .Designation; #12

Specimens without .strings at t a chad;

MEC-5

—^ ' CD

«J o H P< CD «


Relative Profusion

fo of area

covered


covered 2 sides •

Top Bottom

881 Slight Zfo Slight Slight Slight 2$

882 Slight 2% Slight Slight Slight %fo

883 . Traces ^Zlo Traces Traces Slight <L2#

884 Slight Zfo Slight Slight Slight Zfo


IS"

oi o

•H r-i P< CD


Surfaces Side Edges

885 1 mm 1 mm

886 1 mm 3 mm

88? 1 mm 1 mm

888 1 mm limm.


Based on surfaces alone: Funginert

Based on Edges alone: Funginert -278-

n^,_•,^'.'/(•"j'.i'i'ji"."!^ Mwwyj^!^MjMniiiiML.j^yiijffc

Sheet 15 ef 34

TABLE 22 (CO NT IMED).

FUNGUS RESISTANCE OF PLäS.TIG! LAMINATES -{HBKEDHJY EXPOSURE METHOD1)

Grade PBG Manuf acturer and I)es ignatipni #12

Specimens without strings a-t.taohe.ds

11-13

CO

CO o

•H

O °* .


Relative Profusion

fo of area

covered

Relative Profusion of Growth; % of area

sovered 2 sides Top Bottom

889 Slight Zfo Traces Traces Moderate <C Zfo

890 Traces <£ Zfo Traces Traces Slight <£ Zfo

891 Slight , 2fo Traces Traces Moderate <^ Zfo

892 Traces ^2f0 Traces Traces Slight <: Zfo


' ©

cd Ü

•H rH

©


Surfaces Side Edges

893 2 mm 2 mm

894 2 mm 1 mm

895 1 mm 1 mm

896 3 mm 3 mm




-Mi.***- ITChCjtW—

v'#r

Sheet 14 of 24

TABLE 22 {COMimiED)

FJSSISMCE OP PLASTIC LAMINATES (HUMIDITY EXPOSURE METHöfi )'•

Gyadei; PEE Manufacturer sM. Sesignätiönj, #12;

Specimens without, strings- a-tta/j-had:

CO o

<H H Pi CO

P4

Growth on Surfaces" Growth on Edge a

Relative Profusion

fo of area

covered

Relative Profusion of Growth: % of area

covered - 2 sides Top Bottom

1041 Traces <Z Zfo Traces Traces Traces <£ Zfo

1042 Traces <r Z°h Traces Traces Traces < Zfo

1043 Traces <C Zfo Traces Traces Moderate <^ Zfo

1044 Traces < n Traces Traces Traces *^Zfo —I '• -• "


CD -P

CO o •H r-\ Pt O

Maximum Extent of Fungus » Growth from Point of Contact with "String

Surfaces Si,de Edges

1045 1 mm 2 mm

1046 3 mm 2 mm

1047 3 mm 2 mm

1048 2 mm 2 mm

Rating (See pages 264 through S66 for explanations)

Based on' surfaces alones Eunginert

Based on Edges alone: Eunginert -280«

• yrr""îiaamw **&w»m?i

€

Sheet 15 of 34

TABLE 22 (CONTINUED)

FUNGUS RESISTÎGE OP ELASTIC LAMBTATES (HUMIDIZI EXPOSURE METHOD)

Grade; PB£*-P Manufacturer end Pesignctlons #12 XXXP-2&


CD -P cd o

r-i Pi <D

04

Growth on Surfaces Grcv/th on Edges

.Relative Pro fa si on

fo Of area

covered

Relative Profusion of "rov/th; fo of area


841 Slight 2fo Slight Slight Moderate Zfo

842 Moderate 5fo Moderate Slight- Moderate 5%

843 Moderate 5fo Slight Slight Moderate Zfo

844 Moderate 5fo Slight Slight Slight Zfo _

Specimens with strings attached.

CD -P

CO Ü •H H

O CCJ

845

846

847

Maximum Extent of lungus Growth from Point of Contact with String

Surfaces \ Side Edges

8 mm { 4 mm

3 mm 4 mm

11 mm 4 mm

848 T i.

t 2 mm

Rating (See pages 2 64 throath 2 56 for explanation);

Based on surfaces alonej

Based on Edges alone;

Susceptible

Susceptible -281-

£-*-<?^ft*^r~ "i k ? S*Ê> -^ %

r

Sheet 16 of 34


'.FUNGUS RESISTANCE OF PLASTIC LAIVIIN&IüS (HUMID IIY ^jeOSUfiji ME'MOD)

Grade: FBM Manufacturer and "Designation;;; 7^12

Specimens without strings_attachg_dj_

C-1513


CD -P Cj O

•H <H Pt CD a;

Maxj.rr.um Extent of Fungus Growth from Point of Contact with String

Surfaces Side Edges

901 8 tssh 3 mm

902 2 mm 2 mm

903 2 mm 2 mm

904 4 mm 2 mm

Rating (Sea pages 264 through 365 for explanation);


Based on Edges alones

Susceptihle

Suscept ihle

CD 43 CJ O

t-i rH Pi CD

Growth on 1

Surfaces! Grovth on Edges

Relative Profusion

$ of area

covered

Relative Profusion of Growths $ of area covered 2 sides Top Bottom




900 Mode rat e 55$ Moderate . Moderate Moderate 50$

-282-

~fr---^.---wi-:*»*-.

G

O

r

Sheet 17 of 34


FUNGUS RESISTANCE OF PLaSTIC LAMINäTES (HUMIDITY EXPOSURE METHOD)

Gradei FBG Manufacturer and Designation: #12 C-83,,3

Specimens without strings attached; .-—©—1

o •H

Growth oh Surfaces ----- ^~- "• —" 1

Growth on Edges — Relative Profusion

$ Of area

covered

Relative Pro-fusion ei* Growths $ of , area


809 Abundant 75$. Moderate Moderate- Moderate 40$

810 Abundant 75$ Abundant Moderate Moderate 75$


812 Ahandant 75$ Moderate Moderate Moderate 45$

Specimens with strings attacheds

CO

o •r-t H ft


Surfaces Side Edges

813 3 mm 3 mm

814 5 mm 3 mm

815 2 mm 3 mm

816 8 mm 4 mm

Rating (See pages 264 through 266 for explanation):


Based on Edges alone? Susceptible -283«

r&n—rvyj-i?"-! '•^^sxH/s^n^^^'^^'Z" *T^£

c —aKE

3ÄB

Sheet 18 öf 34


FUNGUS RESISTANCE OF PIASTIC LAMINATES (HUMID LEY EXPOSURE METHOD)

Grades FBG Manufacturer and Designations #13

Specimens without .strings attached:

C-813

C

<D +3 cti 0

•H i—n CM CD «

Growth, on Surfaces Grovi/th on Edges

Relative Profusion

fo of area

covered

Relative Profusion of Growth; fo of area covered 2 sides Top Bottom

857 Moderate Ibfo Moderate Slight Moderate 5fo

853 Moderate 5fo Moderate Moderate Moderate 5fo

859 Moderate io£ Moderate Moderate. Moderate 15%

860 Moderate 5# Moderate Moderate Slight 10fo


• Ü)- •

0 «H H -Pi . CO. .-

Cti


Surfaces Side Edges

861 3 mm 3 mm

862 3 mm 2 mm

,863 3 mm 2 mm

864 2 mm 1 mm

jfetjjlg. .(See pages 264 through £66 for explanation);


Based on Edges alone: Susceptible j=m^

~*aadUi&tili#V*i*** wunifimiiwii' 'w *

o

Sheet 19 of 34

TABLE 22 (C0NTB7TJED)

FOTC-US RESISTx-JTCS OP PLAS'TI.C IAMINATES (HUMIDITY EXPOSURE METHOD:)

Grade: FBI Manufacturer and designations ^v*

Specimens without strings attächeds

L~4QQ

Rep

lica

te


Relative Profusion

$ of area

covered

Relative Profusion of Growth: $ of area


817 Moderate 65$ Moderate Moderate Abundant 55$

20$ 818 Moderate 30$ Moderate Moderate Moderate


82Q Moderate 35$ : Moderate Moderate Moderate 25$


Rep

lica

td

Maximum Extent of Pungus Growth from Point of Contact with String

Surfaces Side Edges

821 7 mm 3 mm

822 3 mm 3 mm

823 6 mm 4 mm

824 3 mm 1

7 mm

Rating (See pates 264 through 266 lor explanation)

Based on surfaces alone? Susceptible

Based on Edges alone: Susouutible -285-

r.

O

Sheet 2Q of 34

MLS 22 (COMTINUED)

FIMGUS RESISTANCE OF PL&STIC LÎNATES (H7JMIDIIY EXPOSURE METHOD)

'Grades PBE-P Manufacturer and designations #14

Specimens without at£_ings^_attahoeds.

XXXP-26

- «3 ;

03 O

•H

P< O 1}

Growth, on. Surfaces Growth on Edgos

Relative Prof usi on

fo of area

covered

Relative Profusion of Growth; io of area


929 Moderate 5fo Slight Traces Moderate Bfo

930 Slight 2% Traces Traces Slight ^2io

931 Slight &/0 Slight Traces Moderate 2fo

932 1

Slight 2/b Slight Traces Slight zf


© +3

o •H

©


Surfaces Side Edges

933 7 mm 4 mm

934 4 Hi HI 3 mm

^ «90 3 mm 6 mm

936 3 mm 2 mm


Based on surfaces clones Susceptible

Based on Edges aIones Funginert -286-

Sheet 21 of 34

Hi

(

TABLE 22 (G QNTINUEI).)

FUNGUS RESISTANCE OF PIAS TIG MIN&TES (HUMIDITY EXPOSURE ME-THQ.pO-

Grade: GS.G Manufacturer and Designation: =«15 ii IHM in i ana •'••» ••-»—••—«••.»•••»•!.••-• -IÎ— "-^-i '•••• ••••>a»«.iii-^»iiii»«ia— -_t —-—-

S-pecimeris without strings attached:

GSC

-r_JS -p 03 O

•H r-i P) CO


Relative Profusion

fo of area

covered

Relative Profusion of Growths fo of area

oove=r-ed 2 sides Top Bottom

865 None 0% None None Traces <T 2%

866 None Qfo None None None Qfo

867 Traces <2fo Traces None Traces *C %fo

868 None Of* None None None Ofo

Specimens with strings attached^ mi mini ii — i-—••min i •• •—i i ••• i J II •- .IPHII/MIIII mm ' unnniai 11» m

CD 43

CO O

•H r-i P4 CD


Surfaces Side Edges

869 2 mm 2 mm

870 2 mm 1 mm

871 2 mm 1 mm

872 3 mm 1 mm

Rating (See pages 264 through 36.6 for explanation).;

Based on surfaoos alonei Wrm,jineiv+i

Based on Edges alones

j} UXl^ 4AiQl V

Fung inor-c -287«

('

( )

c

~ «SBI.ES2ft IAIAKAI

.Shee t 22.. of 34

Gräd€

TABLE ,22 (.'GOHTIHI

FUNGUS RE-SISMGu OF PLASTIC : '('HUM ID ELT EXPOSURE METI

is GMG Manufacturer and Designations

JED;)

[ANIMATES IOD")

#15 Ö-5

Specimens without string^ attached;

....

o •H i-! Pi CO

03


Relative Profusion

$ of area

covered

Relative Profusion of Growth: io of area

covered 2 sides 'lop Bottom

913 Moderate 5% Moderate Moderate Moderate 5$

914 Moderate 5% Moderate Slight Slight 5JS

915 Moderate 5% Slight Slight Moderate bfo

916 Moderate 5% Moderate Slight Moderate oft

Sped mens with strings attached'.

Rating

-

CD 43 <3 o

•H r-l Pi CD

a!

Maximum Extent of Fungus Growth from Point öf Contact with String

Surfaces Side Edges

917 2 mm 1 mm

918 1 mm 1 mm

919 3 mm 4 mm

920 2 mm 1 mm

(See paê s 264 through C66 for explanation}:

Basel on surfaces alone: Susceptible

Based on Edges alone: Susoeptibia -288T-

TABLE 22 (CQNT:@SUEI)) Sheet- 23 of 34

FUNGUS EI3TSMÖE OF .PIäSTIC LB1/1I]$A.TES 4;Ä®Ä EXPOoÜRE METHOD)

Grade: NPG Manufacturer and Designation:


#1* jas

CD

CO o

•H i-l ft CO


.Relative Profus ion

fo of area

o oyerecL



921 Traces <2% Traces Traces Slight <C 2$ •

922 Traces <2fo Slight Traces Moderate 2$

. 923 Slight 2fo Slight Traces Moderate 2$

924 Slight Zfo Slight Traces Slight 2fo

*^7..r-7T- —r. I


•1 *~-(J5 *

CO o •M H ft CD

Maximum Extent of Fungus Grc.-ch froa Point of Contact with String

•

Surface's Side Edges

925 4 mm 4 mm

926 9 mm 4 mm

927 3 mm 3 mm

928 11 mm 6 mm

Rating (See pages 264 through 256 for explanation)-

Based on surfaces alone;

Based on Edges alone?

Funginert

Fun gin ert -289-

She=et 24 of 34

TABLE 22 (CONTINUED}

FUNGUS RESISTANCE OF PLASTIC LMOTATES (HUMIDITY EXPOSURE METHOD}

Grade-: EBG Manufactur.er __an d DesignationJ_ #15

Specjgieng without strings atta-cheds

XX

CD- -P <3 O I

•H H P< CD

Growth, on Surfa-ecs Growth on Edges

Relative Profusior

<fo Of area

covered

Relative Profusion of Growth. % of area


849 XJ-'ciUtiB < 2$ , . Traces None Traces <-2fo

850 Traces ^- 2$ : None None Traces < 2$

851 Traces *- 2f0 Traces Traces Slight ^ 2/.

852 Traces •<i- 2/o lone None Traces <C..2$

Specimens with strings auêhea;

/ \

-P CCf o

•H

o< CD

Maximum Extent of Fungus ; Qa?wfeh from x-'oint of

Contact with String

Surfaces Side Edges

853

.... «.........

11 mm 6 mm

854 4 mm 3 mm

855 ? mm 8 mm

856 3 mm 5 mm

Rating (See pages 2 64 through 266 for explanation),.

Based on surfaces alone; Funginert

Based on Edges alone: Fung inert -290-

X__

TABLE 22 (CONTINUED) Sheet 25 of .34

FUNGUS RESISTANCE OF PLASTIC IUMINATBS (HUMIDITY EXPOSURE. METHOD)

Gradq; PBE Manufacturer aaä Designation; #1&

Specimens githout, gt,rln^s,„atta,cnedg

XXX

Of «3 •H rH Pt CD

Growth on 'Surfaces- Growth on Edges

Ralative . Profusion

fo of area

covered

Relative Brcfus ion of Growth: fo of area


969 Traces <C %fo Traces Traces Slight ^%fo

970 Traces <2fo Slight Slight Moderate Zfo

971 Traces < 2fo Slight Traces Moderate Zfo

972 Traces <L2fo Slight Slight Moderate Zfo

Specimens with strings attached.;

CD •P CO o

•H H p) CD


Surfaces Side Edges

973 2 mm 1 mm

= 974 4 mm 2 mm

975 2 mm 3 mm

976 4 mm 2 mm

Rating (See pages .264 through 266 for explanation),;



1ABEE 22 (CONTINUED}"

FUNGUS RESISTANCE OF PIASTIC LAMINATSS (HUMIDITY EXPOSURE METHOD)

Grade; PBE-P Mam^feojnrer and. Designations #15

Speoimens without strings attached:

Sheet 26 of 34

XXXp

-p

O •H iH P) CD a;


Relative Profusion

f0 of area

covered

Relative Profusion of Growth: fo of area


905 Slight 2$ Traces Traces Traces <r 836

906 Slight 2% Traces Traces Traces

90? Slight 2% Slight Traces Moderate 2fo

908 Slight 2% Traces Traces Moderate <2$

Specimens with strings attached?

••a !2 •H i-H Ph O as


Surfaces Side Edges

909 3 mm 2 mm

910 •3 mm 2 nan

911 3 mm 2 mm

912 3 mm 4 ram

i i ii

Rating (See pages 264 through ?66 for explanation)

Based on surfaces alone: Funînert


"•^SZ^-JCE:'-*,",3!>\r3y JL^-^.-T.T.I'U-*"

A

lABEE 22 CGCKTimJED') Sheet 27 of 34

FTOGCIS RESISiiWCE OF Pli.STIC LiilÄlfcTS-S )BY EXPOSURE METHÖF)'

Grade; FBM Manuf a ct urer ,amd Desigtic.tl on;


#15 Ö

—w

© •H rH Pi ©

• Growth on Surfaces Growth on Edges

JRelat ive Profusion

$ of area

covered

Relative Profusion of Growths $ of area




939 Moderate 30$ Moderate Mo der at e Moderate 40$


Specimens with strings attachecLs

CD •p ca o

•H

CD


Surfaces Side iüdges

941 2 ism 3 mm

942 2 mm 1 ran -

943 2 mm 2 mm

944 3 mm 2 ran



Based on Edges aIones

Susee Jtitile

SusceQtiTble -293«

<i

OkBLE 22 (CONTiSTÜBD) Sheet 28 of. .04

iTJHGUS EESISI'xJSCE 0? ^Lr-iSTIC LAM JETTES (HUMIDITY EXPOSURE METRO])}

Grade: FBG- Manufacturer and designation; #15 CE

Specimens without strings attached:;

CD -P C3 O

•H

CD c-:


Relative Profusion

$ jf area

, covered

Relative Irofusion of Growths fo of area


977 Moderate 20$ Moderate •

Moderate Moderate 25$

978 Moderate 30$ Mod e re to Mo de rat e Moderate 25$

979 Moderate ZOfo Moderate Moderate Moderate 30$

980 Moderate 20fo Moderate Moderate Moderate 25$

Specimens with "strings attached?;

CD

C3 • O

H ft: co- cci.


Surfaces Side Edges

981 O mrn 1 mm

982 2 mm 1 mm

983 2 mm 1 mm

984 6 mm 2 mm

Rating (See pages 264 through £66 for explanat ion) I.



*m

TABIE 22 (-G0N-3)iQIUEBj Sheet__29 of 34

FUN GUS RESISTANCE OF PLASTIC LiiMM'AIES (HUMIDITY EXPOSURE METHOD.)

Grades FBE Manufacturer and Designations #15

Specimens without strings attached?

f;F.

o

.2

Growth on Surfaces Growth on Edges '

Relative Profusion

fo of area

c overed

Relative Profusion of Growths fo of area

covered 2 sides lop Bottom

1017 Moderate 40$ Moderate Moderate ' Moderate1 30$

1018 Moderate 35$ Mo der u te Moderate Moderate 35$


1020 Moderate 25$ Moderate Moderate Slight 25$

Specimens with strings atteched•

CD

Cj G

•H rH P< CD


Surfaces Side Edges

1021 2 mm 2 mm

1022 2 mm 1 mm

1023 1 mm 1 mm .

1024 4 mm 2 mm

Rating (See pag-es 2 64 through £65 for explanation)


Based on Edges alone: Susceotihlo -295-

-.SfflUHSZ^- 4°:5<

^„-J.

fÄ

. sx.6

—SÊT

Sheet 30 jbf 34 T-aBIilS 22 {•GQî.amJE-D) """"""

OTGtlS ftESISMCS OF x-L^STlC IditalÄaTES

{HUMID IDY EXPOSURE ML'IHOD)1'

Graded FBI Manufacturer ayd Sosj-effl^ti ohs #15

Specimens without strings attached£

o -p

'• a o

•H

P»

Growth oh Surfaces Growth on üJdges

; Relative = Profusion

$ of area

covered

Relative Profusion of Growths . - fo of area

covered 2 sides Top Bot t-'CSL

-94-5 Modepate : .30$ : Mode-rate Moderate Moderate 25$

946 Moderate 15 $ Moderate Moderate Moderate 35$

947 Moderate 30fo Moderate Moderate Moderate 30$

948 , Moderate 20 fo Moderate Moderate Moderate 35$

Specimens with strings ajbtLched:

CD -P C3 O

•H r~\ P< O


Surfaces Side Ldgas

949 3 mm 4 mm

950 2 mm 2 mm

951 4 mm 2 mm

952 4 mm 2 mm

Rating (See paês 264 through 166 for explanations)


Based on lodges alone: Susceptible -296'

./.,-.=_,,,

'2SF Sheet 31 of.. 31 TABLE- 22 (CONTINUED)

FIB GUS RESISTANCEL OF PLASTIC 3_uniIN_Ti3S [ABS EXPOSURE METHÖB)

-Grade;: PBG Manuf a, eturor , and;JDcsi>-jnc__2Si. #16


XX

o

Pi

04


; Re la tlire. Profusion

<$£ rvf l~ —-

area covered

Relat iv-e Profugi on of Growths fV Ux

area covered 2 sides Top Bottom

985 Traces < 2fo :' Tracas ITl • _ _ _. M ivraijga .Moderate c z%_

986 Traces C 2fo Traces .Traces Slight « < 2f0

987 Traces <2f* Trace s "Traces Slight <C2f0

988 Slight 2% Slight Traces Moderate 2fo

Specimens with- strings attached:

<D ' '

CvJ O

r-1 PJ


Surfaces Side Edges

989 3 ran 2 Mb

990 2 mm 1 mm

991 2 mm 1 mm

992 6 mm 2 ma

Rating XSea' pages 264 through 266 for explanation):

Based on surfaces a lone s

Based on Edges a Ion a;

Fung inert

Fung Inert -297-

T&BLi. 2fc (ÖONTINiBEp) Sheet. 32 of 34

mJWGUS «ESISMCE OF'iPl&^S'x'IG L^llJJttaTES

#16 c

+5 o

•H FN Pi- CD

Growth on Surf ace s-. Growth on. Edges

Relativo Profusion area

cover ed;

ftolatlvp Profusion of G^wths fo of area

coFered :,2 sides Top :f Bottom ;

1025 Mode-rate 3.5^ s Moderate Moderate .jkederat e — ii

20$ =l

1026 Moderate 70$S- . 'Moderat e Moderate 30$

1027 Moderate 65/0 Moderate Moderate Moderate 40#

1023 Moderate 60$ Moderate Moderate Moderate ; mfa ;

Specrimens with st-ririg_s attached;

CO

O •H

Pi (D

Marimum j^xtent of Fnrigus Growth, from Poiur. of Contact with String

Surfaces Side Edges

1029 2 mm 1 mm

1030 2 mm 2 mm

1031 4 mm l

1 mm

1032 5 mm 2 mm

Rating (See pages 264 through 266 for explanation]:

Based on surfaces alones Susceptible

Based on Edges alones Susceptible •298«

*sü V <,i .„»ft -• * - w

^

I^BEE 22 (COMTIfUED.) Shee=t 33 of 34

FÜH.&TJS iöSSISMCE ©F E&ASIIC LkMINalSS (HUMIDITY EXPOSÜl-tE MILItfüD)

Grä&eu. FBl- Manufacturer end Designation^

Specimens- without- strings attached;

ir '16 LE

.3 ö

crj

Growth ion Surfaced Growth on Edges

993

994

ftel-ätive Pro-fusion

Moderate

Moderate

995 Moderate

996 '' Moderate

•- -1

$ of j'fielative Profusion of Growtfe. i % of area covered

35$

2 5$

35$

2 sides

Moderate

Moderate

Moderate

lop

Moderate

Moderate

Moderate

Bottom

Moderate

Moderate

Moderate

3 0$ M o de r a t e M o de rät e |M o de rat e

area covered

25$

30$ 7°

30$

Specimens.with strings attached:

ca ©

•H H Pi =2


Surfaces i Side Edges

997 3 mm 2 mm

998 4 mm 2 5Sm

999 . 4 mm 2 mm

LOGO ! 6 mm i

3 mm

Rating (See pages 264 through 266 for explanation)

Based on surfaces alor.e:


Susceptible

Susceptible •299-

•,t> &MJ'„ >.-? ??~r?-T$"

TABLE 23

FUNGUS «EStSX/fcSFfiE OF PLASTIC LAMINATES {HUM*BäET£ • EXPOSURE METHOD}

{.Summary of ratings listed in table 22)

Spec« Grad«

FBI PBG FBI PJE FBM FBG FBI PBG PBE GSG GMG HPG PBG PBE PBE-P FBM F3G FBG FBI PBE-P GSG GMG NPG PBG PBE PBE-P FBM FBG FBE FBI ' PBG FBM FBE PBG

Manufacturer- and Designat ion

#6 4fn- % V' #9

;flO #10 m. JLTT

•n.2 #12 #12 #12 #12 #12

#12 A3 #13 #14 #15 #15 #15 •|15 7/-15 #15 #15 #15 7/-15 #15 #16 416

221-A XX-324

0-525 6022 C--3Q

CE--34 1-40

210

.11 CCS

7r

#17 416

GB- GB-128M MEC-5

.XX-1-3 XXX-13 XXXP-26 0^1513 G-8,13 0-813 L-400

XXXP-26 GSG G»5

NS JVX

XXX XXXP

c GE IE I

JLÄ. c

IE 300

Surface Hating

Funginert Fünginert

SuSCep-tibl8= Funginert

Susceptible Siiscept ible Susceptible Suscept ible Suscep-t ible

Funginert Susceptible

Funginert FUnginert Fung in ert

Susceptible Susceptible Susceptible Susceptible Susceptible Susceptible

Funginert Susceptible

Fung inert Funginert Funginert Funginert

Susceptible Susceptible Susceptible SusG-sp t ible. Fungin ert Suscepüible Susceptible

Funginert

Edge Rating

Funginert Funginert

Susceptible Funginert

Susceptible Sus.ceptible Susceptible Susceptible

Funginert Funginert

Susceptible Funginert Funginert Funginert

Suscept ible Susceptible Suse ep t ible Susceptible Susceptible

Fung-inert Funginert

Sus.cept ible Fungin&rt Fung inert Fungiriert Funginert

Susceptible Susceptible Susceptible Susceptible

Funginert Suscept ible Susceptible Susceptible

9

-301-

v3fc.*-.1^

am *#»

lALAKi

; 1

Süfiima#,.v:_pf, Oh s er vä tio.ss

;(,S.!ßfffa.öe Growth)

•Designation Gr.ade^ The following samples Manuf-v showed growth covering 2fo or . less of the area, on all 4 £& 22-iÂ TBE replicate -s-s- #7 XX-. 324 PBG

#9 6022 PBE (These samples also showed #X2 GB; -112S GSG

a minimum of 1 mm growth from #12 MEC-5 WPG string on replicates expos ed #12 XX~13 PBG with string attached) #12 XXX-13 PBE

#15 G3C GSG - #15 NS NPG

&B XX PBG #15 XXX PBE "'Li K XXXP PBE-5 #16 XX PBG

9

The following samples showed growth covering 2 - 10$

#17 300 PBG

of the area on all 4 repli cates^ m L-40 FBI •]{l£ 215 PBE 7/-X2 GB-128M G&G #12 XXXp-26 PBS-P #13 C-813 FBG #14 XXXP-26 PBE-P #15 GV5 GM-G

The following samples #10 CE-34 FBG showed growth covering 10- #11 210 PBG 40C of the area on all 4 #15 C FBM replicates: #15 CE FBG

7^15 LE FBE #15 L FBI 7r"16 IE FBE

The following samples 7#7 C--525 FBM showed growth covering 30 - 7/10 C-30 FBM 80$ of the area on all 4 •/|12 C-1513 FBM replicates: ;/-13 L-400 -mriT

J7JJA

#16 C FBM

The following sample showed growth covering 65% or /r'12 C-813 FBG over of the area on all 4. replicates:

-302-

•gntamary of Observations

(Edge Growth,)

-j< . _ =-

^SP

The following samples showed growth covering 2fo less of the area on all 4 replicates:

or

(These samples also showed a minimum Of 1 mm growth from string on replicates exposed with string attached)

The following samples showed growth covering 2 - of the area . on all 4 replicatess

The following samples show eft growth covering 10- 40$ of the area on all 4 replioatesj

The following samples showed growth covering 30- BQfo of the area on all 4 rep 3 i^t^Si

fenuf<

I7 #9

#12 #12

it II "*?*!

£14 #15 #15 .An e. #XÜ

Jii r 7/-XO

^ #10 10$ #12

#12 #13 #15

#10 #10 #11 m m #16 #16 #17

I7 #12 #12 #13

Designation Grade

221-A FBE XX-324 PBG

6023. PBS 215 PBE.

GB.-112S GSG I£EC~5 MPG XX--13 PBG'

PBE X^-JP-26 PBE-P

GSO GSG- HS •NPG ü HB'G: XXX PBE

XXX? PBE-P vrv ^*1-i.**- ^j_a. Jtruü-

L-40 FBI GB-128M GMG XXXP-26 PBE-P

C-S15 PBG -5 GMG

C-30 FBM CE-34 FBG 210 PEG

C FBM CE FBG IE FBE I FBI C FBM IE FBE 300 PBG

0—525 FBM C-1513 FBM 0-813 FBG 1-400 FBI

-303-

.7VUSL T~~ rz. ???&-; -âxy&sssaszxzswxiv

FOTGIKERJEHSSS OF THE JHEm:OS!S!fc&INJS_MOIiaE£D PL-aS (PICS r--i~r7^.rT7TrM in j ii " M»^WWC^)W I.»' i I'II •• III»»M«in«-» . n —j mini » y«n inn rmi im

CEMHEîESH Mfff HQ])-)

Introliäotlon

:)•..• During the period covered by this Fourth Report, a

number of additional available the rmoset ting molded plastics

were. t§ste,d for fuhginer.tnes=s io.-llpwing the Petrx-dlsh, culture

test procedure äs outlined in the ^Funginentness Requirement

and Test, for use inM2X~I-631ii" (as completed 29 January

1-95-1 )•-, furnished "by the Bureau öf Ordnance with letter dated

16, February 1951» Earlier work covering this phase of the

study was reported in the Third Quartesjy Report (pages 2QS-

244).

Materials

'<*-

The plastics evaluated in this study include the

following the rmo setting molded plastics as approved under

MILITARY SPECIFICATION MIL-P-14BS

Phenolic Resint

Type CFG- - Cellulose filler, general-purpose«

Type CFl"-5-Celiulose filler, impact-resistant; nominal impact strength, 0*60 foot-pounds per inch notch»

Type CFI-10~Ce!lulose filler, impact-resistant; nominal impact strength, IcO foot-pounds per inch not ch o

Type CFI-20-Cellulose filler, impact-resistant; nominal impact strength, 2<>0 foot-pounds per inch notch*

Type CFI-30-Cellulose filler, impact-res is tantj nominal impact strength, 3=0 foot-pounds per inch notch« =304«

^> -<r," " ~~£T ~.y~ i.-^zsKss-^s^Ksm *-

Type CFI-40-Cellulose filier, impäct-resist.ant f nominal impact streng tu, 4,c0 foot-pounds per inch notch»

Type MFE - Mineral filler, "best electrical properties».

TypeMFG; - Mineral filler, general-purpose,,, heat- resistant.»

Type MF& - Mineral filler, heat-resistant»

Type. MFI-10-Mineral filler, impact resistant; nominell impact strength, 1*0 foot-pounds per inch not oh-j

Type MF£--20---Mineral filler, impact resistant; nominal impact strength, 2*0 foot-pounds per inch notch«

Meüamine Resinr

Type CMG- - Cellulose filler, general-purpose»

Type CMI-g= Cellulose filler, impact-resistant; nominal impact strength, 0C60 foot-pounds per ;nch notch«.

Type MME - Mineral filler, arc- and flame-resistant»

Alkyd Resins

Type MAG - Mineral filler, general-purpose aliyd resin»

Experimental Procedure

The experimental procedure used was the same as that used

in the Petri-dish funginertness tests of plastic laminates

except for the test specimens used«. The details of this

procedure are found in the First Quarterly Report of this

series. (See pages 556, and 70)

The specimens used in these tests were prepared as follows*

The thermosetting molding plt-stio, being tested, was molded

into discs of l/8" thickness in such diameters as to -305-

-., .«..-vT:: '?&-.; ;AA'V r../i:*^^*i&z^^'#izr^^1&<r&**-- •• s~****'~~*&~ -=v<-=*2v

allow subsequent cut tag of s$uar-e:s 1 ineh by I ineS. ff OB

the discs« This cutting: wa^s ;&one= using an 8" arbor tilt

sew equipped with a suitable cutting blade»

The re-sulting specimens (l/-8" x 1" x 1") were then

handled in. the same manner as- the plastic laminate specimens»

Evaluation of Results

At the end of the 21 day incubation period, each specimen

was examined separately for growth on the surface and for

growth on the cut edges and rated as follows:

Observed Fungus growth on the -.specimen

No growth Traces of growth (*) Slight to moderate growth: partial coverage Moderäte growth:, considerable coverage Abundant growth: complete coverage

.Rating

0 1 2 3 4

( ) Traces of growth are defined as scattered, sparse fungus growth such as might develop from an unusual mass of spores in the original inoculum, or upon an occasional extraneous bit of debris. (Continous cobwebby growth extending over the entire surface or edge of the specimen, even though not necessarily obscuring the specimen, was rated as 2»)

Table 24, pages 308 through 310, lists the observations on

the individual replicates of the unconditioned specimens and

numeric rating of each replicate both for surface and edge

growth. Table 25, pages 311 through 313, lists the

observations on the individual replicates of the conditioned

specimens and the numeric rating of each replicate both for

surface and edge growth,

-306-

Interpretation of ReauLts^lor Determination of Funginertness

For a material to be considered funginert it shall -not.

support fungus growth; this shall be due to :a3)senee, of

nutritive substances in the material and not. to presence of a

fungistatic agent» Ehe absence of a fugitive fungistatic ageht

was determined from the results on the specimens which recived

the conditioning of 6 hours a=t .85- C»

Oh the, basis of the numeric rating of the fungus growth on

the six "specimens for each sa:mple of plastic being evaluated,

the following criteria were, used for the various degrees of

fungus resistance:

1) tfunginert - where at least 2 of 3 specimens were rated 0 or 1 when tested as received and at least 2 of 3 specimens were rated 0 or 1 when tested after being bond it ionedo

*2) fUjgitive fungistatic, - where at least 2 of 3 specimens were"" rated 0 or i~when tested as received and at least 2 of 3 specimens were np_t_ rated 0 or 1 when tested after being conditioned^""

3) Fungus Susceptible * where at least 2 of 3 specimens were not rated ö or 1 when tested as received and at least" 2 of 3 specimens «ere not^ rated 0 or 1 when tested after being oonditione'dT

Since it has no.t been determined whether these criteria

will be applied to surface growth alone or to surface growth

together with edge growth, separate ratings have been assigned

to the specimens based on surface growth alone and on surface

and edge growth considered together«

Table 26, pages 314 and 315, lists the classification,

of the molded plastics tested, based on the rating con-

sidering surface growth alone and on the ratings considering

surface growth together with edge growth. ~307~

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•- 315 -

Summary of Observations

''Surface Growth Alone)

The following samples showed traces of growth on all six reilieatess

The following samples showed traces or slight growth on all six replicate;

The following samples showed slight growth on all six replisatess

The. following samples showed* slight or moderate growth on all six replicates?

The following sample showed abundant growth on all six replicates,:

Manu.f c

#88 r

#21 #21 #21 #21

#21 #31 7#21

f21 7/-'<oX

7#12

Designation Grade

420 MAG 422 M&G-

IM-510 Wate CFI-5 m~510 Bio C$I"5 HR-350 Nato MFG HR-35Ü Br0 MFG

GP-130 Nate CFG HR-340 Nate toFK ER-340 Bro MFH

GP-130 Br0 CFG JM-510 Br9 CFI-5

20 Natural CFI-20

if"

-316-

r. i? **»—»-"* i? K**t~T Sä=ä"?«KT- *-^ »Mr •=«. .

äücamair;/ pff Observations

Cggyfaoe juad Edge Growth)

The following samples showed traces, of growth on all six reDlicatesi

The following samples showed traces or slight growth on all six replicates*

The following samples showed slight growth ©n all six replicates?

The following samples showed traces., slight or moderate growth on all six replicates;

The following sample showed slight or moderate growth on all six replicates?

The following sample sbcred abundant grov/un on all six replicates:

Manuf9

#23 #28

#21 7r'2x #21

#21 #21 #21

#21 #21

#21

;'712

Designation, Grade

-120 422

MAG ML.G

IM-510 Nat. CFI-5 Hi-510 Bl, CPI-5 HR-r350 Nat, MFG

GP-130 Nat, GFG HR-34.0 Nat* MFH HR-340 Br, MFH

HR-350 Br, MFG IM-blu Br0 CFI-5

GP-I30 Br« CF-Ö

20 Natural CFI-20

-317-

or P^RTLil COMPARISON OF KESUED S OBTAINED

BY THE TWO TEST METHD'DS

A total of 129 plastic laminated materia.ls have been

tested for resistance to fungus, growth usiixg both the Petri-

Dish Method and the Humidity-Exposure Method as supplied by

the Bureau of Ordnance» Observations and zcafeings of the

individual replicates of these 129 laminates have been reported

on previous pages of this report and in thes First, Second and

Third Quarterly Reportse

A preliminary comparison of 30 of these 1S9 laminates

has been reported in the SepondQuarterly iteport, pages 121

and 122o u.t\ additional 55 laminates are iöcLuded in the

Third Quarterly report» pages 245 through 247a The additional

34 laminates are included in this report, (Cable 27, pages

319 lists these additional 54 laminates arranged in decreasing

order of fungus resistance, as determined "By the Petri-Dish-

Method, considering surface growth alone«, ilso listed in table

27, are the corresponding results as obtained using the Humidity

Exposure Method»

This listing has oeen compiled using results of surface

growth Plone 'on unconditioned specimens) since it is not

felt that the edge growth obtained in the 3?efc:r?i-Dish Method

is comparable to that obtained in the Humiaifcy-SJxposure

Method-

No conclusions are being drawn from this listing until all

the laminates under best have oeen reported,

-318-

IABLE 27

FUNGUS RESISTANCE OF PLASTIC LäMINJJDES AS DETERMINED BY' TWO TEST METHODS

Spec« Grade

Manufacturer and

Designation

Surface Growth "by:

Petri-Dish Method Hümi d ity-Exp o sure

Method

Relative Profusion

Rating Relati ve

(*) Profusion

$ of area

Covered

=«12

#7

S3-112/S GSG

XX--13 221-A

XXX XX

6022 XXX-13 XX-3 24

HS MEC-5 XXXP 300 21 ö

XXXP-26 XXXp-26

G~5 Lt*40

GB-128M- 210 IE

C-813 CE-34

I 1*400

C C-30

XX. CE IE

0-1513 0

C-r-813 r< ^ P;.O p;

Traces Traces Traces Slight Slight Slight Slight Slight Slight Slight Slight Slight Slight Slight- Slight Slight Slight Slight Slight Slight Slight

Mod: Pa rt Mod: Part- Mo a: Mod: Mod; Mod:

Part Part Gens Cons

Abundant Abundant Abundant Abundant Abundant Abundant Abun&cnt

Cov Gov Cov Cov Cov Cov

1 1 1 2 2 2 2 2

2 2 2. o

2 2 2 2 2 2 3 3 4 4 4 4 4 4 4

None- Tr© Hone- Tra Tr0 - SI*

Traces Traces Traces Traces Traces

Tr„ - SI, T.r» - SI* ,1 r e "" Q19

Slight Slight

la?» - Modo Slo - Modo SI* - Mod. Moderate Moderate - Moderate Moderate Moderate Moderate Moderate Moderate Moderate Moderate Moderate Tr, - SI. Moderate Moderate Moderate Moderate

Mod«»- Abund Mod» - Abund

0$

105$

A ifo Ifo ifo ifo &

lo.&fo 1*7-556 m

2% 2*5$

2*75$ 4*25$

5$ . 5$

6*25$ ~\Afo

32*5$ 8a7§$o

14% 2'-£/o 50$ 25$ 60$ 1$

25$ 31$ 45$

57p5r$ 72o5$

75<fo

V See page 250 for explanation -319-

Documents

E N f Si BY St E € E N - apps.dtic.mil · ati 140 038 unclassified (copies obtainable from astia-osc) lacquer and chemical corp«, alaka research labs.» brooklyn» n.y» (4th quarterly