CHT QSil Beyond X1 Transparent Liquid Silicone Elastomer

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CHT QSil Beyond X1 Transparent Liquid Silicone Elastomer
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	Description: The product is a transparent and colorless silicone formulation and is ideal for optical applications. The viscosity profile enables excellent flow around components and is excellent for potting complex parts. The chemical composition results in a cured product that is hydrolytically stable as well as reversion resistant. The silicone elastomer provides electrical insulation and physical shock resistance of components and enables environmental protection. Key Features Low linear shrinkage Non-yellowing catalyst system Self-bonding without primer, requires cure at elevated temperature to build adhesion and develop full physical properties Meets Mil-I-81550C (type II) standard Application: Solar panel encapsulating layer Information provided by CHT Group
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Physical Properties	Original Value	Comments

Density	0.990 g/cc	B
	1.01 g/cc	A
Brookfield Viscosity	650 cP	B
	3400 cP	Mixed
	4000 cP	A
Storage Temperature	<= 38.0 °C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	45	ASTM D2240-95
Tensile Strength	754 psi	ISO 37
Elongation at Break	100 %	ISO 37

Electrical Properties	Original Value	Comments
Volume Resistivity	1.70e+10 ohm-cm	ASTM D-257
Dielectric Constant	2.69	ASTM D-150
Dielectric Strength	500 V/mil
Dissipation Factor	0.00060	ASTM D-150

Thermal Properties	Original Value	Comments
Specific Heat Capacity	0.300 BTU/lb-°F
Thermal Conductivity	0.180 W/m-K
Maximum Service Temperature, Air	204 °C
Minimum Service Temperature, Air	-55.0 °C

Optical Properties	Original Value	Comments
Refractive Index	1.406

Processing Properties	Original Value	Comments
Cure Time	60.0 min @Temperature 150 °C
Gel Time	>= 1440 min
Shelf Life	24.0 Month

Descriptive Properties
Appearance	Addition
Color	Transparent and colorless	A
	Transparent and colorless	B
	Transparent and colorless	Cured Product
Mix Ratio	10:1	By Weight
Rheology	Liquid, Newtonian

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PCHTSIL058 / 314541

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