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High temperature – Flowable RTV-1 silicones
CAF® 8
Technical Data Sheet n° SIL 00 088 3 – January 2001
Description
CAF 8 is a one component silicone elastomer which cures at room temperature:
- Acetic.
- Flowable.
- Red.
Examples
of applications
CAF 8 is mainly used in sealing and bonding applications for domestic appliances and
industrial applications:
It is notably used for:
- sealing of steam chambers for electrical iron bases
- sealing of clad heating elements
- coating of conveyor belts
Advantages
CAF 8 is quick curing, has good stability at high temperatures and good adhesion to
many different surfaces at temperature and under conditions of humid heat.
CAF 8 therefore provides perfect assembly and complete sealing between different
materials subject to thermal stresses.
CAF 8 also has good dielectric properties and is very resistant to chemical agents.
Curing
CAF 8 starts curing as soon as the products come into contact with atmospheric
moisture.
Skin formation time*, min. approx.. .................................................8
Time required to cure 2 mm*, hours, approx...................................6
Cured thickness after 24 h*, mm, approx.....................................4.5
*Temperature 23 °C, relative humidity 50 %
The curing rate increases with temperature and hygrometry.
Characteristics
1. Before curing
Appearance...................................................................... fluid paste
Colour.......................................................................................... red
Odour .................. ....................................................................acetic
Specific gravity at 25 °C............................................................ 1.14
(Standards ISO R 1183-DIN 53479-NMRPS 703)
Flowability, in seconds.......................... ....................................... 30
(MIL S 880-2-D)
Brookfield viscosity, mPa.s.................................................... 22.000
(Standard NF T 76105 - ASTM D 445)
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CAF® 8
Technical Data Sheet n° SIL 00 088 3 – January 2001
2. Cured product
2.1. Specific gravity at 25 °C................................................... 1.15
(Standards ISO 2781-ASTM D 297-BS 903 part. A1)
2.2. Mechanical properties after 7 days at room temperature
Shore A hardness......................................................................... 34
(Standards ISO R 868-DIN 53505-ASTM D 2240
BS 903 Part A7-NF T 46003-NMRPS 471)
Modulus at 100 % elongation, MPa........................................... ..0.8
(Standards ISO R 37 (H2)-DIN 53504-ASTM D 412
BS 903 Part A2-NF T 46002 (H2)-NMRPS 470)
Tensile strength, MPa..................................................................... 2
(Standards ISO R 37 (H2)-DIN 53504-ASTM D 412
BS 903 Part A2-NF T 46002 (H2)-NMRPS 470)
Elongation at break, %..... .......................................................... 250
(Standards ISO R 37 (H2)-DIN 53504-ASTM D 412
BS 903 Part A2-NF T 46002 (H2)-NMRPS 470)
Tear strength, kN/m........................................................................ 6
(Standards ASTM D 624 specimens A-NMRPS 492)
2.3. Thermal properties
Lower usage temperature limit
Brittle point , °C.......................................................................... – 65
Temperature range in continuous use, °C..................... – 55 to + 27
(on a 2 mm thick film, 1000 h)
Maximum peak recommended temperature
(on a 2 mm thick film)
- 72 h, °C................. ................................................................ + 300
- 15 h, °C.................. ............................................................... + 320
- 15 min, °C.............................................................................. + 350
N.B.: These values are not absolute limits, but the range within which variations in
mechanical properties are not reduced by more than 50 %.
In the case of exposure for periods shorter than 72 h, the product withstands higher
peak temperatures.
2.4. Adhesion properties
- On aluminium AG3:
Curing 7 days at room temperature
(1 mm thick joint, curing 7d at 23 °C, NMRPS 748)
Shear strength, MPa ………….................................................. 0.2
Type of failure................................................................... adhesive
Curing 7 days at room temperature + 1 h at 250 °C
(1 mm thick joint, curing 7d at 23 °C, NMRPS 748)
Shear strength, Mpa.................................................................. 0.8
Type of failure........................................................ 100 % cohesive
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CAF® 8
Technical Data Sheet n° SIL 00 088 3 – January 2001
- On other surfaces:
Self adhesion on glass, enamel, ceramics, epoxy paint
Adhesion with primer 131 on polyamide, ABS, polycarbonate
2.5. Thermal conductivity
Thermal conductivity at 30 °C, W/m.K.................. .................... 0.25
(Standard NF x 10021)
Thermal conductivity at 150 °C, W/m.K..................................... 0.20
(Standard NF x 10021)
2.6. Dielectric properties
Dielectric strength, kV/mm........................ ................................... 23
(Standards NF C 26225-ASTM D 419-IEC 243)
Dielectric constant at 1 MHz........................................................ 2.4
(Standards NF C 26230-ASTM D 150 - IEC 250)
Power factor at 1 Mhz........................................................ 2.6 x 10-3
(Standards NF C 26230-ASTM D 150 - IEC 250)
Volume resistivity, ����.cm....................................................... 7 x 1015
(Standards NF C 26215-ASTM D 257-IEC 93)
Processing
Processing is particularly easy, since the products are delivered ready to use.
Application can be carried out either manually or using robotic application equipment.
CAF 8 is applied to one of the two joint surfaces and assembled before the product has
formed a skin.
It is recommended to apply CAF 8 to clean and dry surfaces.
Packaging
- 310 ml cartridges on pallets of 1200 units.
- 25 kg tins on pallets of 10 units.
- 210 kg drums on pallets of 4 units.
Storage and shelf life
When stored in its original unopened packaging at a temperature of between + 2 °C and
+ 30 °C, CAF 8 can be used for up to 24 months from its date of manufacture (expiry date).
Comply with the storage instructions and expiry date marked on the packaging.
Past this date, Bluestar Silicones no longer guarantees that the product meets the
sales specifications.
Safety
Consult the Safety Data Sheet for CAF 8.
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CAF® 8
Technical Data Sheet n° SIL 00 088 3 – January 2001
Visit our websitewww.bluestarsilicones.com
? EUROPE
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Tel. (33) 4 72 13 19 00
Fax (33) 4 72 13 19 88
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08816-1100
United States
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? LATIN AMERICA
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Brazil Ltda.
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Bloco G – 1°andar
05804-902- Sao Paulo –
SP- Brazil
Tel. (55) 11 37477887
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Kong
Trading Co. Ltd
29th Floor, 88 Hing Fat
Street
Causeway Bay
Hong Kong
Tel. (852) 3106 8200
Fax (852) 2979 0241
Warning to the users
The information contained in this document is given in good faith based on our current knowledge. It is only an indication and is in no way binding, particularly as
regards infringement of or prejudice to third party rights through the use of our products. BLUESTAR SILICONES guarantees that its products comply with its sales
specifications. This information must on no account be used as a substitute for necessary prior tests which alone can ensure that a product is suitable for given use.
Users are responsible for ensuring compliance with local legislation and for obtaining the necessary certifications and authorisations. Users are requested to check that
they are in possession of the latest version of this document and BLUESTAR SILICONES is at their disposal to supply any additional information.
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