CHT Group QSil 266 Addition Cure Potting Material

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CHT Group QSil 266 Addition Cure Potting Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QSil 266 is a two-component 100% silicone solids elastomer designed for electronic potting applications. The system offers a hard, thermally conductive, low modulus material that is readily repairable. Key Features: 100% solids, no solvents Excellent thermal conductivity Heat cure required Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Original Value	Comments

Specific Gravity	2.10 g/cc	Uncatalyzed, QSil 266A
	2.19 g/cc	Uncatalyzed, QSil 266B
Viscosity	100000 cP	Uncatalyzed, QSil 266A
	100000 cP	Uncatalyzed, QSil 266B

Mechanical Properties	Original Value	Comments
Hardness, Shore A	60	Cured 15 minutes at 150°C
Tensile Strength	200 psi	Cured 15 minutes at 150°C
Elongation at Break	75 %	Cured 15 minutes at 150°C

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.840 W/m-K
Maximum Service Temperature, Air	204 °C
Minimum Service Temperature, Air	-55.0 °C
Flammability, UL94	V-1 @Thickness 1.50 mm
	V-0 @Thickness 3.00 mm

Processing Properties	Original Value	Comments
Cure Time	20.0 min @Temperature 150 °C
	40.0 min @Temperature 120 °C
Gel Time	>= 1440 min	Catalyzed

Descriptive Properties
Color	Brown	Uncatalyzed, QSil 266A
	Brown	Uncatalyzed, QSil 266B

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PACC2090 / 199478

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