CHT VBS26-35 Silicone Elastomer

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CHT VBS26-35 Silicone Elastomer
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Description: VBS26-35 is a pourable 2-part addition cure silicone elastomer system. After mixing parts ‘A’ and ‘B’ in the correct proportions, the system will cure at ambient temperatures within 24 hours, but the rate of cure can be accelerated by heat. The cured rubber exhibits excellent physical and electrical properties. Key Features Low viscosity Easy 1:1 mix ratio Fast cure High tear resistance Cured Elastomer (after 2 days cure at 23+/-2°C) Information provided by CHT Group
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Physical Properties	Metric	English	Comments

Density	1.06 g/cc	0.0383 lb/in³	BS 903 Part A1
Brookfield Viscosity	17000 cP	17000 cP	B
	18000 cP	18000 cP	A
Linear Mold Shrinkage	0.0010 cm/cm	0.0010 in/in
Storage Temperature	<= 30.0 °C	<= 86.0 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	26	26	ASTM D 2240-95
Tensile Strength	5.00 MPa	725 psi	BS903 Part A2
Elongation at Break	590 %	590 %	BS903 Part A2
Tensile Modulus	0.000680 GPa	0.0986 ksi	Young's
Tear Strength	20.0 kN/m	114 pli	BS903 Part A3

Thermal Properties	Metric	English	Comments
CTE, linear	273 µm/m-°C	152 µin/in-°F
Maximum Service Temperature, Air	200 °C	392 °F
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F

Processing Properties	Metric	English	Comments
Cure Time	<= 60.0 min	<= 1.00 hour	De-mould time
Pot Life	7.00 min	7.00 min
Shelf Life	12.0 Month	12.0 Month

Descriptive Properties
Appearance	Light Blue viscous liquid
Color	Blue		B
	Light Blue		Cured Product
	Translucent		A
Volume Coefficient of Thermal Expansion	818 ppm / °C

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PCHTSIL153 / 314636

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