Elkem (Bluestar Silicones) CAF® 4 Silicone Rubber

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Elkem (Bluestar Silicones) CAF® 4 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Description: CAF 4 is a one component silicone elastomer which cures at room temperature Acetic Self-leveling Off-white Applications: CAF 4 is mainly used in industrial sealing, bonding and coating applications: It is notably used for: bonding of plastics in aeronautics, electrical insulation, coating of fabrics for thermal protection, coating of conveyor belts. Advantages: CAF 4 is quick curing, has very good mechanical properties, good heat stability and high dielectric properties. CAF 4 therefore provides perfect assembly and complete sealing between different materials subject to thermal stresses. Information provided by Bluestar Silicones
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Physical Properties	Original Value	Comments

Specific Gravity	1.16 g/cc	ISO R 1183
	1.19 g/cc	after curing; ASTM D297
Brookfield Viscosity	250000 cP	ASTM D445

Mechanical Properties	Original Value	Comments
Hardness, Shore A	37	ASTM D2240
Tensile Strength	551 psi	ASTM D412
Elongation at Break	290 %	ASTM D412
100% Modulus	0.116 ksi @Strain 100 %	ASTM D412
Shear Strength	1.20 MPa @Thickness 1.00 mm	on aluminum AG3, curing 7d at 23°C
Tear Strength	25.7 pli	ASTM D624

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	ASTM D257
Dielectric Constant	2.9 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	533 V/mil	ASTM D419
Dissipation Factor	0.0021 @Frequency 1e+6 Hz	ASTM D150

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.300 W/m-K @Temperature 30.0 °C	Standard NF x 10021
Maximum Service Temperature, Air	225 °C @Thickness 2.00 mm, Time 3.60e+6 sec
	250 °C @Thickness 2.00 mm, Time 259000 sec	Peak
Minimum Service Temperature, Air	-60.0 °C @Thickness 2.00 mm, Time 3.60e+6 sec
Brittleness Temperature	-60.0 °C

Processing Properties	Original Value	Comments
Cure Time	10.0 min	Skin Formation Time
	5.00 hour @Thickness 2.00 mm

Descriptive Properties
Appearance	viscous flowing paste
Color	Off-white

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PBLUST088 / 191064

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