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Silicone polymers are inorganic compounds with inherently unique properties, especially thermal and chemical stability within a wide temperature range, UV resistance, and environmental compatibility. In the scope of solar applications, the most important performance of silicone is its durability, which has been proven in many other fields and is clearly outperforming durability of organic polymers.

As a photovoltaic module has to be warranted for 20 to 25 years, durability is definitively a key requirement. Solar module manufacturers have to ensure that power output remains as stable as possible. Protection of solar cells and electrical connections in order to withstand harsh environmental conditions over the lifecycle of the solar module becomes a basic technical requirement.

Bluestar Silicones has developed a special range of sealants and adhesives (CAF), encapsulants and potting materials (ESA) for solar applications, designed to provide long-term sealing, bonding, and protection against moisture, chemically aggressive environment, UV, thermal cycling and mechanical stresses. Our range of solar module assembly solutions includes high-performance frame sealing and Junction box bonding materials, as well as cell module coatings, cell encapsulants and Junction box potting agents.

Product Overview CAF:

- One component, room temperature vulcanizing with air moisture (RTV-1)

- Flexible elastomers with outstanding properties

- Self-adhesive product on metals & plastics

- Non corrosive

Bluesil™ ESA:- Two components

adhesive silicon RTV-2 and Gels

- Self-adhesive system designed to bond to most of the plastics and metals

- Non Corrosive- Optical clear- Thermal conductive

Bluesil™ Pastes:- Highly hydrophobic- Corrosion

resistance, - Outstanding

weatherability

Bluesil™ Resins:- Spreadability- Thermal resistance- Outstanding

resistance to climatic and ageing agents.

Bluestar Silicones and Sustainable Development: meet the needs of the present without compromising the ability of future generations to meet their own needs.

Responsible, sustainable development has always been a part of Bluestar’s identity. Water recycling and filtering was the reason behind the foundation of Bluestar in the 1980s, and remains one of the Group’s key activities.In this process, Bluestar Silicones is committed to a sustainable development strategy promoting the use of new technologies in order to better protect nature and respect man, for the sake of future generations.Bluestar Silicones’ ambition is to improve the day-to-day management of the natural resources. At the Kyoto summit (1989)

and the Copenhagen summit (2009), reducing greenhouse gas emissions through the use of renewable energies such as solar, has been a key element in the different governments’ strategies. Through the silicone products present in various applications in the photovoltaic processes, Bluestar Silicones is contributing to a better use of this energy source which is free, abundant and renewable.This presentation of Bluestar Silicones’ products for solar applications will help to better describe the Company’s contribution to sustainable development.

More than just outstanding

silicone properties

Having signed its name to the U.C.I. (Chemical Industry’s Union) commitment to progress, Bluestar Silicones is committed to manufacturing its products and carrying out its operations with a continous focus on improving safety and protecting health and the environment.

An ongoing commitment to safety, protection of health and the environment

A quality system certified

to NF ISO 9001:2000 and NF EN / AS

9100 standard

SIlIConeS foR SolAR ApplICATIonS

Bluestar Silicones. Delivering Your Potential.

Silicone Solutionsfor Solar Energy

Bluestar Silicones France SAS21, avenue Georges PompidouF-69486 Lyon Cedex 03 - France Tel: +33 (0)4 72 13 19 00 - Fax: +33 (0)4 72 13 19 88

The information contained in this document is given in good faith and based on Bluestar Silicones current knowledge. Bluestar Silicones makes no representation or warranty as to the accuracy, completeness of such information or as to the compatibility of such information with the user’s intended application : information is supplied on an “as-is” basis and is not binding on Bluestar Silicones. Nothing contained herein is intended as a recommendation to use the products so as to infringe any patent. Bluestar Silicones assumes no liability for users’ violation of patent or other rights and disclaims any liability for loss, injury or damage which may result from the use of the products. Therefore, information contained herein must not be used as a substitute for necessary prior tests which are the sole responsibility of the user and which alone can ensure that a product is suitable for a given use.

Commonwealth of Independant States (CIS), Middle East, Eastern Europe, AfricaBluestar Silicones France SAS21, avenue Georges PompidouF - 69486 Lyon cedex 03Tel. + 33 (0)4 72 13 19 00Fax + 33 (0)4 72 13 19 88

France, Belgium, Luxembourg, the NetherlandsBluestar Silicones France SAS Customer Service55, rue des Frères PerretF - 69191 Saint-Fons cedexTel. + 33 (0)4 72 73 71 00Fax + 33 (0)4 72 73 76 58

ItalyBluestar Siliconi Italia SpAVia Archimede, 602I - 21042 Caronno Pertusella (Va)Tel. + 39 02 96 41 41Fax + 39 02 964 50 209

Germany, Switzerland, AustriaBluestar Silicones Germany GmbHBorsigstrasse 1D - 51381 LeverkusenTel. + 49 (0) 2171 91349 0 Fax + 49 (0) 2171 91349 10

Spain, PortugalBluestar Siliconas España SAC/Vic 3, Poligono Industrial La FloridaE - 08130 Santa Perpètua de Mogoda (Barcelona)Tel. + 34 935 040 200Fax + 34 935 608 049

Norway, Sweden, DenmarkBluestar Silicones Scandinavia A/SDronningensgate 6 N - 0152 OsloTel. + 47 22 91 07 60

FinlandBluestar Silicones Finland OYEskolantie 1 AFI - 00720 HelsinkiTel. + 358 9 350 877 30Fax + 358 9 350 877 17

PolandBluestar Silicones Poland Sp z o.o.ul. Grzybowska 80/82PL 00-844 Warszawa Tel. + 48 22 661 55 21 Fax. + 48 22 661 51 20

Czech RepublicBluestar Silicones Czech Republic, s.r.o.Za potokem 46/4106 00 Praha 10Czech RepublicTel. + 420-603-496662

United Kingdom, IrelandBluestar Silicones UK LtdWolfe Mead, Farnham RoadBordon, Hampshire GU35 0NHTel. + 44 14 20 477 000Fax + 44 14 20 483 200

USA - CanadaBluestar Silicones North AmericaTwo Tower Center Blvd - Suite 1601East Brunswick - NJ 08816 - 1100 - USATel. + 1 732 227 2060Fax +1 732 249 7000

Latin AmericaBluestar Silicones Brasil LtdaAv. Maria Coelho Aguiar, 215Bloco G - 1° ANDAR - São Paulo - BrazilCEP : 05804-902Tel. + 55 11 37 47 78 87Fax + 55 11 37 41 77 18

Hong Kong - Asia Pacific Regional OfficeBluestar Silicones Hong Kong Trading Co., Ltd29/F, 88 Hing Fat StreetCauseway Bay, Hong KongTel. + 852 3106 8200Fax + 852 2979 0241

ChinaBluestar Silicones Shanghai Co., Ltd3966 Jin Du RoadXin Zhuang Industrial ZoneShanghai 201108, ChinaTel. + 86 (0)21 5442 6600Fax + 86 (0)21 5442 3733

KoreaBluestar Silicones HK Trading Co., LtdKorea Branch 17/F, Kangnam Bldg., 1321-1,Seocho Dong, Seocho Gu, Seoul, KoreaTel. + 82 (0)2 3472 5137 Fax + 82 (0)2 3472 5007

JapanBluestar Silicones Hong Kong Trading Co., LtdRoppongi First Building, 1-9-9 Roppongi, Minato-Ku, Tokyo, 106-8540, Japan

For detailed commercial contacts please visit our website:www.bluestarsilicones.com

Bluestar Siliconesthroughout the world

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Silicone Solutionsfor Solar energy

our Solar products have been homologated according these standards with different type of photovoltaic modules. Independently of the technological assembly type of the solar module, we also perform ageing tests on our materials (particularly for adhesion) like the hot and wet test (85°C ± 2°C, 85% ± 5% HR for 1000 hours) described in the IeC 61215 for example.

There are several categories of specific standards for photovoltaic modules: performance qualification of the crystalline module : IeC 61215, ISpRA 503

performance qualification of the thin-film module : IeC 61646, CeC 701

Safety qualification depending on the country: TÜV safety class II in Germany, Ul 1703 for north America and IeC 61730 for international.

Absorbing SOLAR ENERGY… Having signed its name to the Responsible Care commitment to progress, Bluestar Silicones has committed in managing industrial and commercial operations with a continuous focus on improved safety, health and environment. Bluestar Silicones is very proud to provide technical solutions in order to improve solar energy systems and ensure renewable energy to be used more intensively in a near future. A complementary range of products for Solar Module manufacturing has been designed providing: cost effectiveness increased durability improved performances

Bonding & Sealing of PV frame

The adhesives (CAF) required for modules are exposed to extreme conditions. They have to withstand and compensate alternating temperature fluctuations of up to 100°C between hot and cold weather conditions, as well as to resist to the wind, snow, moisture and mechanical stresses.

Cell Encapsulation

For the cell encapsulation application, long-term durable transparency is required. This is the reason why our encapsulant agents (Bluesil™ ESA) are well suited for these needs thanks to their excellent optical transparency over a wide light spectrum, outstanding UV stability, high temperature and electrical stability and protection against corrosion. These encapsulants contribute to improve long term cell efficiency.

… and converting to ELECTRICAL POWER One of the key parts of the module is the part where all the energy coming from each individual solar cell is collected and delivered on the grid through standard cables. Junction box is the usual name of this essential part of the solar module.

Potting of the Junction boxes

The Junction box, usually positioned on the back-sheet of the module, is used as an exit for the cables but could also be an entry-point for moisture. This could lead in worst cases to destruction of the electrical unit. Moisture protection combined with flame resistance, electrical insulation and thermal conductive properties of potting agents (Bluesil™ ESA) are key parameters for a long term operation of Junction boxes.

Bonding of the Junction boxes

Moreover, the Junction box must be connected to the back-sheet for all the life of the module. Our adhesives (CAF) are designed to provide long-term bonding and protection against moisture, environmental attack, mechanical and thermal shock.

Technical service Our Technical Customer Service Laboratory support our customers by developing analysis and tests to assess performance of our materials and contribute to an optimized design of the parts where our materials are used. We also offer our customers the opportunity of producing prototype series with our dispensing equipment or in close cooperation with dispensing equipment suppliers. Technical support for mass production can be provided by our team of technicians who have a strong experience of managing silicone materials in a wide range of applications like adhesive, potting, encapsulating and sealing applications. We also have the facilities to perform tests in ageing conditions involving UV exposure, moisture and thermal cycling.

BENEFITS

Quick curing at room temperature, excellent deep section cure

Wide temperature range stability

Excellent adhesion on various substrates

Optically clear and opaque grades

Thermal conductive grades

Wide range of hardnesses, from gels to 55 Shore A

Excellent dielectric properties

UL approvals

Bluestar Silicones. Delivering Your Potential.

Bluestar Silicones materials are used for photovoltaic module applications to improve their reliability and durability due to their unique features. ESA products, Electronic Silicone Adhesives, are two components silicone elastomers which cure at room temperature (RTV-2) by polyaddition reaction. The curing can be accelerated by heating. After curing, gels or elastic materials are available from the ESA range.

ESA Potting materials have excellent weather resistance and give an excellent protection against moisture. These properties associated with high electrical insulation performances, fire resistance (UL approvals), thermal conductivity, wide temperature range stability (-40°C to +150°C) are key parameters for a long term operation of the Junction box. Suitable for automated dispensing, ESA potting agents are ideal for mass production. A quick curing version is also available, which allows to turn the panel around 15 minutes after having applied the product.

ESA Encapsulation materials have an excellent optical transmittance over a wide light spectrum. This high transparency combined with outstanding UV stability, high temperature and electrical stability, and protection against moisture make ESA encapsulants excellent candidates to improve long term cell efficiency. In addition, ESA encapsulation agents also provide excellent adhesion properties.

Silicone Solutions

For Potting & Encapsulation

Past 4 Past B431 Past 90 Past 340 Resin 991

Main characteristics Water repellency Fluid potting Potting Thermal conductive

Conformal coating

Physical properties

Color Translucent to whitish White Pale straw yellow

Specific gravity @ 25°C 1.0 1.1 1.0 2.2 1.03

Worked penetration (mm/10) (1)

260 390 330 280 Viscosity: 175 mm²/s

Unworked / Rested penetration (mm/10) (1)

200 370 320 270 Dry matter content: 50%

Exudation (%) (2) <6 - <1 <1.5 nc

Evaporation (%) (2) <2 <3 <1 <1.5 nc

Drip point (°C) (3) - - >250 - nc

Thermal properties

Service temperatures (°C) -40 to +200 -60 to +200 -50 to +200 -40 to +200 -20 to +200 *

Thermal conduction @ 25°C (W/mK)

0.21 0.25 - 0.52 nc

Dielectric properties

Dielectric strength (kV/mm) (4) 20 20 - 15 80

Dielectric constant @ 1kHz (5) 2.6 2.6 - 3.5 2.7 (100Hz)

Power factor @ 1kHz (5) 5 E-4 2 E-3 - 5 E-3 1 E-3 (100Hz)

Volume resistivity (W.cm) (6) 1 E13 1 E13 - 1 E13 1 E14

Storage Shelf life from the production date (months)

36 36 36 18 12

Pastes Resin

(1) NF T 6012, ASTM D 217, DIN 51804 (2) After 24 h at 200°C (3) ASTM D 566

(4) NF C 26225 - ASTM D 419 - IEC 60 243(5) NF C 26230 - ASTM D 150 - IEC 60 250 (6) NF C 26215 - ASTM D 257 - IEC 60 093

* these values are given for information; for any other range of temperature we recommand to realize some preliminary tests

BSI provides Junction box potting agents that offer a unique combination of benefits: moisture protection, electrical insulation, thermal conductive properties, fire resistance (UL registration), quick curing at room temperature. In addition ESA range of silicone rubbers and gels also provide excellent adhesion properties, damping performances as well as outstanding weatherability.

Pastes & Resin range: general properties

Junction box

Front Glass

Connector

Cell

Aluminium Frame

Back sheet

Junction box potting

Cells encapsulation

3

434

Potting & Encapsulation applications:

ESA range: general properties

(1) ISO R 1183, DIN 53479, NM 703 (2) Brookfield NF T 76105, ASTM D 445 (3) ISO R 868, DIN 53505, ASTM D 2240, BS 903 (A7), NF T 46003, NM 471

BLUESIL™ ESA

RTV II PA Gel PA

ESA 7250 A&B

ESA 7251 A&B

ESA 7252 A&B

ESA 7252 QC A&B

ESA 6024A&B

ESA 6110 A&B

Main characteristics Optically clear, UL 94 HB (1mm)

Optically clear, high adhesion

UL 94 V0 (3,4mm);

good thermal conductivity

UL 94 V0 (3,4mm);

quick curing

self-adhesive, high damping,

low extractables, low viscosity

Optically clear, low viscosity

Color Transparent Transparent Black Black Blue Transparent

Specific gravity @ 25°C (1) 1.02 1.02 1.4 1.4 0.97 0.98

Process Viscosity (mPa.s) (2) 4 000 2 000 6 000 6 000 1 300 1 200

Ratio 10:1 10:1 1:1 1:1 1:1 1:1

Pot-life 4h 8h 90min <5min 90min 50min

Cure temperature 1h 150°C 1h 150°C 5min 150°C 10min 23°C 24h 23°C 3h 23°C

Mechanical properties

Shore A hardness for 6 mm thick section (points) (3)

52 27 48 48 - -

Penetration (1/10mm) (6) nc nc nc nc 300 250

Tensile strength (MPa) (4) 6.2 2.1 2.3 2.3 - -

Elongation at break (%) (4) 115 190 170 170 - -

Tear strength (kN/m) (5) 4 2 5 5 - -

Adhesion 100% CF glass

100% CF metals, glass,

plastics

100% CF glass

100% CF glass

Tacky Tacky

Dielectric properties

Dielectric strength (kV/mm) (7) 20 20 18 18 23 23

Dielectric constant @1kHz (8) 2.7 2.7 3.2 3.2 2.8 2.8

Power factor @ 1kHz (8) 1 E-3 1 E-3 5 E-3 5 E-3 1 E-3 1 E-3

Volume resistivity (W.cm) (9) 1 E+15 1 E+15 8 E+13 8 E+13 1 E+15 1 E+15

Thermal properties

Thermal conduction at 25°C (W/m.K)

0.16 0.16 0.42 0.42 0.15 0.15

Minimum service temperature (°C)

-70 -50 -60 -60 -40 -40

Maximum service temperature in continous use, 1000 h (°C)

180 180 180 180 150 150

Maximum service temperature in peak, 72 h (°C)

200 200 200 200 180 180

Flame retardancy

UL 94 HB HB pending V0 V0 pending HB pending HB pending

Storage Shelf life from the production date (months)

24 12 20 20 12 12

(4) ISO R 37 (H2), DIN 53504, ASTM D 412, BS 903 (A2), NF T 46002 (H2), NM 470 (5) ASTM D 624 éprouvette A, NM 492 (6) DIN ISO 2137 (150g hollow cone)

(7) IEC 60 243-1 (8) IEC 60 250 nc: non concerned

High light transmittance in UV-visible wavelength associated with outstanding optical stability make Bluesil™ ESA 7250 A&B, ESA 7251 A&B and ESA 6110 A&B excellent candidates for encapsulation of a wide variety of cell designs. Their optical clarity and stable properties upon exposure to heat and moisture make these products the best choice for cell encapsulation.

SIL

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Bluestar Silicones France SAS21, avenue Georges PompidouF-69486 Lyon Cedex 03 - France Tel.: +33 (0)4 72 13 19 00 - Fax: +33 (0)4 72 13 19 88

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For detailed commercial contacts please visit our website:www.bluestarsilicones.com

The information contained in this document is given in good faith and based on Bluestar Silicones current knowledge. Bluestar Silicones makes no representation or warranty as to the accuracy, completeness of such information or as to the compatibility of such information with the user’s intended application: information is supplied on an “as-is” basis and is not binding on Bluestar Silicones. Nothing contained herein is intended as a recommendation to use the products so as to infringe any patent. Bluestar Silicones assumes no liability for users’ violation of patent or other rights and disclaims any liability for loss, injury or damage which may result from the use of the products. Therefore, information contained herein must not be used as a substitute for necessary prior tests which are the sole responsibility of the user and which alone can ensure that a product is suitable for a given use.

Functions & Applications

Coating & Durability Bluestar silicones offers coating specifically designed to provide an excellent durability and thermal stability required for solar consumer products. Outstanding resistance to UV solar radiation, climatic and ageing agents also ensures long term protection efficiency.

RTV II PA Gel PA

Function Examples of Application ESA 7250 A&B

ESA 7251 A&B

ESA 7252 A&B

ESA 7252 QC A&B

ESA 6024 A&B

ESA 6110 A&B

Potting & Encapsulating

PV Junction box potting l l l

Cells encapsulation l l l

BLUESIL™ ESA

Pastes Resin

Function Examples of Application Past 4 Past B431 Past 90 Past 340 Resin 991

Potting Removable PV Junction box potting l l l

Heat transfer PV Junction box potting l

Coating Protection PV Cells & module coating l

BENEFITS

One component RTV-1, neutral cure

One component activated with quick curing

Strong adhesion to PV module including anodized aluminium, glass, PVF, PET, PPO, PC

Long term weathering performance

Flexible gasket over a wide range of temperature

Excellent electrical properties

UL approvals

Bluestar Silicones. Delivering Your Potential.

Bluestar Silicones has developed an exhaustive range to cover all technical, economical and environmental requirements.

CAF are room temperature vulcanizing (RTV-1) silicone elastomers which cure at room temperature: As soon as the product comes into contact with atmospheric moisture. The cure rate increases with temperature and ambient moisture level.

Special grades of RTV-1 have been developed for the Solar Energy market. These CAF products give excellent adhesive properties to several back sheet materials such as PVF (PolyVinyl Fluoride) and PET (PolyEthylene Terephthalate) and composite with PVDF (PolyVinyliDene Fluoride) from several suppliers. This CAF range also provides outstanding adhesion on Junction box material’s like PPO (PolyPhenylene Oxide) or PC (PolyCarbonate).

These products maintain good elasticity over a wide temperature range (-50 to 180°C) with excellent weatherability and electrical insulation properties.

Silicone Solutions

For Sealing and Bonding

Thanks to the quick curing of CAF products, the drying time is reduced to 7-8 hours as a cured thickness of 2mm is obtained after that time at 23°C and 50% relative humidity. This time could be reduced by using SUNSIL 2030 activated.

0

2,5

5

7,5

10

0 24 48 72 96 120 144 168

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ess (

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)

Time (hour)

CAF 520

CAF 530

Sunsil 2030

Activated

Curing kinetic

Frame sealing

Junction box bonding

Front Glass

Connector

Cell

Junction box

Aluminium Frame

Back sheet

Sealing and bonding applications:

This application requires high performance adhesives which can provide long term bonding, with protection against moisture, environmental ageing, and mechanical stresses. These CAF adhesives withstand and compensate differential thermal dilatations of bonded materials.

The use of CAF adhesives leads to a permanently reliable bonding interface between Junction boxand the back sheet.

For thermal solar panel, The Sunsil 2030 activated has been developed to give fast adhesion between both front glass & back panel to the aluminium frame with a high thermal resistance up to 250°C.

CAF & SUNSIL range: general properties

CAF range, 1 component RTV 2 components RTV

CAF 505 CAF 510 CAF 520 CAF 530 SUNSIL 2030 Activated

Main characteristics Non flowing, self-adhesive

metal & plastics, neutral

Non flowing, self-adhesive

metal & plastics, neutral

Quick curing, self-adhesive

metal & plastics, neutral

Quick curing, high mechanical properties, self-adhesion metal & plastics, non

corrosive

Quick curing, self-adhesive,

high mechanical properties

Color Translucent White, grey, black Translucent White, black White, black

Specific gravity at 25°C (1) 1.03 1.38 1.02 1.30 1.04 / 1.17 (white)

Processing Cure type Alcoxy Alcoxy Alcoxy Alcoxy Activated acetic

Flowability (mm) (2) 2 3 3 2 2 / 5

Extrusion (g/min) (3) 80 30 50 130 -

Skin formation time (min) (4)

10 10 5 - 8 10 4

Setting time for a 2 mm thickness (h) (4)

12 15 7 8 -

Cured thickness after 24 h (mm) (4)

4 3 4 3.5 -

Mechanical properties after 7 days curing

Shore A hardness for 6 mm thick section (points) (5)

17 24 15 34 23

Tensile strength (MPa) (6) 2 1.4 1.1 3.5 2.2

Secant modulus for 100% elongation (MPa) (6)

0.35 0.5 0.3 0.9 0.6

Elongation at break (%) (6) 750 600 550 450 450

Tear strength (kN/m) (7) - - - 15 6

Adhesion* (8) Lap shear strength (MPa) 0.9 0.6 0.6 1.2 2.0

Type of failure CF/AF CF 100% CF 100% CF 100% CF 100% CF 100%

Thermal properties

Minimum service temperature (°C)

-50 -60 -60 -60 -65

Maximum continuous service temperature, 1000 h (°C)

180 180 150 150 180

Maximum peak service temperature, 72 h (°C)

180 200 150 185 250

Flame retardancy

UL 94 HB HB equivalent HB HB HB equivalent

Storage Shelf life from the production date (months)

12 12 12 12 18

(1) ISO R 1183, DIN 53479, NM 703 (2) Boeing S 7502 NM459(3) NM 495 A 3 mm / 3 bars

(4) Temp 23°C, relative humidity 50% (5) ISO R 868, DIN 53505, ASTM D 2240, BS 903 (A7), NF T 46003, NM 471 (6) ISO R 37 (H2), DIN 53504, ASTM D 412, BS 903 (A2), NF T 46002 (H2), NM 470

(7) ASTM D 624 éprouvette A, NM 492 (8) Aluminium AG3 specimen, without primer, 1mm thick joint, NM 748 * after 14 days at 23°C 50% relative humidity CF= cohesive failure, AF= adhesive failure

SIL

12

Bluestar Silicones France SAS21, avenue Georges PompidouF-69486 Lyon Cedex 03 - France Tel.: +33 (0)4 72 13 19 00 - Fax: +33 (0)4 72 13 19 88

011

3-1

SB

For detailed commercial contacts please visit our website:www.bluestarsilicones.com

The information contained in this document is given in good faith and based on Bluestar Silicones current knowledge. Bluestar Silicones makes no representation or warranty as to the accuracy, completeness of such information or as to the compatibility of such information with the user’s intended application: information is supplied on an “as-is” basis and is not binding on Bluestar Silicones. Nothing contained herein is intended as a recommendation to use the products so as to infringe any patent. Bluestar Silicones assumes no liability for users’ violation of patent or other rights and disclaims any liability for loss, injury or damage which may result from the use of the products. Therefore, information contained herein must not be used as a substitute for necessary prior tests which are the sole responsibility of the user and which alone can ensure that a product is suitable for a given use.

Functions & Applications

Durability test resultsBluestar Silicones has performed ageing test according to IEC 61215 in order to check the bonding properties of the CAF adhesives on PVF and also on composite PVDF / PET composite materials for 1000 hours at 85°C with 85% relative humidity, which is the damp heat test.

The thermal cycle test is less aggressive for the silicone performances than the damp heat test, as it’s only a variation in temperature from - 40°C to + 85°C. Lap shear tests are carried out in order to measure the lap shear strength and the cohesion failure.

Lap shear strength MPa, cohesive failure %:

Initial 85°C, 85% HR, 1000h Initial 85°C, 85% HR, 1000hCAF 520 0.70 MPa, 100% 0.60 MPa, 100% 0.65 MPa, 100% 0.63 MPa, 100%

CAF 530 1.20 MPa, 85% 1.08 MPa, 90% 1.10 MPa, 90% 1.05 MPa, 90%

PVF PVDF/PET

CAF range, 1 component RTV 2 components RTV

Function Examples of Application CAF 505 CAF 510 CAF 520 CAF 530SUNSIL 2030

Activated

Sealing & Bonding

PV Frame sealing l l l l

PV Junction box bonding l l l

Sealing & bonding general applications

l

Thermal solar panel l l