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Water Reducible Polyurethane Enamels - InfoHouseinfohouse.p2ric.org/ref/28/27101.pdf · PDF fileWater Reducible Polyurethane Enamels ... cx-100 Carbodiimide Union ... XW110 polyurethane

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    Aerospace

    Technology Systems 1 Water Reducible Polyurethane Enamels

    Boeing Aerospace & Electronics /I

    Water Reducible Polyurethanes

    Candidate Low VOC Topcoat Formulations -

    David J. Swanberg [ 0 L) 7 7 '3 - 'f Ys Boeing Defense and Space Group Aerospace Systems Technology Materials and Processes Group

    December 6, 1990

  • PAGE 2

    5. OTHER PRECAUTIONS

    A. WASH THOROUGHLY AFTER HANDLING AND BEFORE EATING OR SMOKING.

    B. CLOSE CONTAINER AFTER EACH USE.

    C. HYDROGEN GAS CAN EVOLVE WHEN WATER COMES IN CONTACT WITH ALUMINUM POWDER RESULTING IN A FIRE AND/OR EXPLOSION HAZARD. THIS SITUATION CAN OCCUR WHEN WATER-BORNE PAINT WASTE IS DISPOSED OF IN THE SAME WASTE CONTAINERS AS IS SOLVENT-BORNE PAINTS CONTAINING ALUMINUM PIGMENTS (SUCH AS METALLIC TOPCOATS). TO ELIMINATE ANY POSSIBILITY OF THIS HAZARD, IT IS RECOMMENDED THAT WASTE PRODUCTS FROM THIS WATER REDUCIBLE PRIMER BE KEPT SEPARATE FROM OTHER PAINT WASTE PRODUCTS.

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    4.

    DEFT., INC.. 17451 VON KARMAN AVENUE, IRVINE. CALIFORNIA 92714 11714) 474.0400

    SAFETY PRECAUTIONS

    MATERIAL STORAGE

    KEEP CONTAINERS TIGHTLY CLOSED AND UPRIGHT TO PREVENT LEAKAGE. DO NOT STORE OR USE NEAR HEAT, SPARKS OR FLAME. STORE ONLY IN WELL VENTILATED AREA.

    MATERIAL SPIUGE

    REMOVE ALL SOURCES OF IGNITION (FLAME, SPARK, HOT SURFACE, ELECTRICAL, ETC.) AVOID BREATHING VAPORS, VENTILATE AREA. CONTAIN AND REMOVE WITH INERT ABSORBENT AND NON-SPARKING TOOLS.

    OPERATOR RESPIRATORY PROJECTION

    A. NIOSH APPROVED RESPIRATOR FOR PAINT, LACQUER, ENAMEL MISTS AND ORGANIC VAPORS.

    B. USE NEOPRENE (RUBBER, POLYETHYLENE, LEATHER, CANVAS, ETC.) GLOVES TO PREVENT SKIN CONTACT.

    C. CLEAN, LONG SLEEVE AND LONG LEG CLOTHING.

    D. USE SAFETY EYE WEAR WITH SIDE SHIELDS OR SPLASH GUARDS.

    E. AVOID SKIN OR EYE CONTACT.

    F.

    EMEXGENCY AND FIRST AID PROCEDURES

    A. VAPORS - REMOVE FROM EXPOSURE. RESTORE BREATHING. KEEP WARM. NOTIFY PHYSICIAN.

    B. SPLASH (EYES) - FLUSH IMMEDIATELY WITH LARGE VOLUMES OF WATER FOR AT LEAST 15 MINUTES. GET MEDICAL ATTENTION.

    C. SPLASH (SKIN) - WASH AFFECTED AREAS WITH WATER IMMEDIATELY. REMOVE CONTAMINATED CLOTHING. CONSULT A PHYSICIAN.

    MAY - BE A SENSITIZING AGENT OVER A LONG PERIOD OF TIME.

    ---

    CONT'D. . . .

  • DEFT.. INC.. 17451 VON KARMAN AVENUE, IRVINE. CAL!FORNIA 92714 l ( 7 1 4 ) 474-0400

    APPLICATION

    DEFT'S WATER REDUCIBLE PRIMER CAN BE APPLIED USING CONVENTIONAL AIR, AIRLESS, AND ELECTROSTATIC SPRAY EQUIPMENT. IT CAN ALSO BE APPLIED USING AIR ELECTROSTATIC HANDGUNS WHICH ARE EQUIPPED TO HANDLE WATER BASED COATING SYSTEMS. EXAMPLES OF SUCH AIR ELECTROSTATIC HANDGUNS ARE RANDSBURG REA 111, NORDSON AN-8, AND GRACO AS 4000.

    APPLICATION PROPERTIES (TYPICAL):

    APPLICATION VISCOSITY INDUCTION TIME POT LIFE DRYING TIME

    RECOMMENDED FILM THICKNESS RECOMMENDED AIR PRESSURE

    19-21 SECONDS #2 ZAHN CUP NONE 6 H R S . MINIMUM AT 73+2"F SET TO TOUCH - 30 MIN. WITH GOOD AIR CIRCULATION. DRY HARD - 6 HRS. AT 73+2"F. WITH GOOD AIR CIRCULATION. 0.6 - 1.0 MILS DRY FILM 60-80 # ATOMIZATION, l0-12# IN POT 22 OZ PER MIN.

    EQUIPNENT CLEANING:

    ALL FLUID LINES AND EQUIPMENT SHOULD BE CLEANED WITH DEFT IS-219 REDUCER OR APPROVED EQUIVALENT. FLUID LINES SHOULD BE PURGED BEFORE INTRODUCING WATERBORNE PRIMER. DO NOT USE RECLAIMED SOLVENT WHEN CLEANING EQUIPMENT.

    APPLICATION PRECAUTIONS:

    1. THE SURFACE TO BE PRIMED MUST BE ABSOLUTELY CLEAN AND FREE OF OIL, DUST, ETC.

    2. EQUIPMENT MUST BE ADEQUATELY GROUNDED. CLEAN SPRAY EQUIPMENT IMMEDIATELY AFTER USE.

    3. MIX ONLY THAT AMOUNT TO BE USED IN SIX HOURS.

    4 . AMINE CURED EPOXY PRIMER FROM ONE VENDOR SHALL NEVER BE MIXED WITH THAT OF ANOTHER VENDORS PRODUCT.

    5 . APPLY OVER PRETREATED METAL OR CLEAN FIBERGLASS REINFORCED PLASTIC SURFACE.

  • Water Reducible Polyurethane Enamels

    Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Regulatory Requirements

    Development Objective

    Candidate Water-Borne Formulations

    Water-Borne Performance

    Performance Ratings and Comparisons

    Summary

  • Aerospace

    Technology Systems 1 Water Reducible Polyurethane E n a m e l s

    /I - Boeing Aerospace & Electronics

    Regulatory Requi rements

    Driven by ozone forming potential of photochemically reactive organic compounds

    The Clean Air Act - US EPA

    Regional atmospheric ozone concentrations

    Regulate processes (Le. paint booth stack emissions)

    Regulate solvent content in coatings

  • Water Reducible Polyurethane Enamels

    Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Development Objective

    Provide durable aerospace coatings with properties and performance equivalent to traditional solvent-borne polyurethane topcoats - esp . MI L-C-83286.

    Ultra-low VOC, water-borne or 100% solids

    Exterior durability

    Exceptional chemical resistance flexibility

    Conventional application characteristics

    Appearance (gloss) and reasonable cost

  • Aerospace

    Technology Systems 1 Water Reducible Polyurethane Enamels

    /I - Boeing Aerospace & Electronics -

    Candidate Water-Borne Formulations

    Water-borne polyurethanes and polyesters

    Water-borne crosslin kers

    Carbodiimide Di-functional amine Aziridine

    White topcoat formulations - with and without crosslinkers added

    Controls

    MIL-C-83286 and 1 -Coat

  • Water Reducible Polyurethane Enamels Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Product Type Manufacturer

    Water- Borne Res ins

    . VOC (gmlL)

    XW110 Polyurethane Mobay 360 - R-9000 Polyurethane IC1 3 5 72-7230 Polyester Carg i I I 85

    Crosslinkers

    XL25 S E

    BAPP

    cx-100

    Carbodiimide Union Carbide 5 0 0 (self-emulsified)

    Di-finctional Texaco 0 amine

    polyaziridine IC1 0 (100% active)

  • Water Reducible Polyurethane Enamels

    Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Coating T y p e Color VOC (gm/L)

    MIL-C-83286 Conventional Gloss Grey 2-comp. polyurethane

    2-comp. Polyurethane 1 -Coat High-Solids Gloss White

    590

    4 1 8

  • Water Reducible Polyure thane Enamel s Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Formula Resin voc (g mlL)

    1

    2

    3

    Note: All White Topcoat Formulations; PigmeWBinder ratios = .75

    XW110 31 5

    R-9000 225

    72-7230 85

  • Aerospace Systems 1 Water Reducible PoIyureth.ane Enamels Technology

    Formula Resin Crossli n k e r Percent *

    // Boeing Aerospace & Electronics

    VOC (gm/L)

    Table V. Water-Borne Coating Formulations with Crosslinkers

    on resin solids

  • Water Reducible Polyurethane Enamels

    Boeing Aerospace & Electronics

    Aerospace Systems Technology

    T e s t

    Low VOC Performance Requirements Low VOC CriterionlGoal

    600 Specular Gloss Film Hardness (Pencil Scale)

    Gloss - 90+ Camouflage - - 5 H - 2H

    Wet Tape Adhesion < 5% loss

    Low Temperature Flexibility I no crack, 1" mandrel @ -65 F 1

    Impact Flexibility 96 in-lb direct & reverse

    De-ionized Water Skydrol 500B

    hardness - no change

    7 days, no blistering 7 days, film intact,

    MIL-H-83232

    2 B - HB min. 24 hrs, 160 F, film intact, min. stain,

  • Aerospace Systems // Water Reducible Polyure thane Enamel s

    Formula Thickness 600 Spec Pencil Wet Tape L o w Temperature Flexibil i ty mil Gloss Hardness Adhesion

    Technology //

    Impact Flexibility in-lb directlrev

    /I - Boeing Aerospace & Electronics

    I MIL-C- I 2.0 9 2 3H 5 B no cracking

    Water-Borne Performance

    9 2 83286 l -Coa t

    0% removed 1 6 0 2.2 9 3 3H 5 B no cracking 1 6 0

    0% removed 160

    Formula De-ionized Water Skydrol 500B M I L - H - 8 3 2 8 2

    MIL-C-83286 no blistering softening hardness: H-2H hardness: 4B

    very light stain hardness: no

    no blistering severe softening very light stain I I I '-Coat I hardness: F-H hardness:

  • Aerospace

    Technology Systems 1 Water Reducible Polyurethane Enamels Formula T h i c k n e s s 60' S p e c Penc i l Wet Tape

    mil Gloss Hardness Adhesion

    Boeing Aerospace & Electronics /I

    Low Temperature Impact Flexibility Flexibility in-lb directhev

    Water- B orne Perform an ce

    I XW110 1 2.3 70 H 5B no cracking 1 6 0 1 0% removed I 1 6 0

    R-9000 I 1.8 64 B 4B I hairline cracks I 9 6 72-7230

    4% removed 8 0 2.0 85 6B nia nla nla '

  • Water Reducible Polyurethane Enamels

    Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Formula De-ionized Water Skydrol 5008

    Water-Borne Performance (Cont'd.)

    MIL-H-83282 7 days, room temp. 7 days, room temp. 24 hours , 1500 F

    severe softening

  • Water Reducible Polyure thane E n a m e l s Boeing Aerospace & Electronics

    Aerospace Systems Technology

    Water-Borne P e r f o r m a n c e (cont 'd.) General Properties and Flexibility of Water-Borne Coatngs with Crosslinkers Added

    Formula T h i c k n e s s 6 O O S p e c Penc i l Wet Tape Low Temperature Impact Flexibility mil Gloss H a r d n e s s Adhesion Flexibility in-lb directlrev

    XW11 o/ 2.6 63 H 58 XL25 0% removed XW11 o/ 2.7 70 2H 5B CX100 0% r emoved R-9000/

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