CHT Group QSil 559 Addition Cure Potting Material

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CHT Group QSil 559 Addition Cure Potting Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QSil 559 is a 100% silicone solids elastomer designed for electrical potting applications. The two-component system offers a hard, thermally conductive, low modulus material that is readily repairable. Key Features: 100% solids Long gel time Good elongation Low modulus Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Metric	English	Comments

Specific Gravity	1.31 g/cc	1.31 g/cc	Uncatalyzed, QSil 559A
	1.31 g/cc	1.31 g/cc	Uncatalyzed, QSil 559B
Viscosity	1200 cP	1200 cP	Uncatalyzed, QSil 559B
	2000 cP	2000 cP	Uncatalyzed, QSil 559A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	50	50	Cure 15 minutes at 150°C
Tensile Strength	1.72 MPa	250 psi	Cure 15 minutes at 150°C
Elongation at Break	110 %	110 %	Cure 15 minutes at 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.16e+15 ohm-cm	1.16e+15 ohm-cm
Dielectric Constant	3.2 @Frequency 1000 Hz	3.2 @Frequency 1000 Hz
Dissipation Factor	0.0030	0.0030

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.370 W/m-K	2.57 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	204 °C	399 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F
Flammability, UL94	V-0 @Thickness 3.00 mm	V-0 @Thickness 0.118 in

Processing Properties	Metric	English	Comments
Cure Time	15.0 min @Temperature 150 °C	0.250 hour @Temperature 302 °F	As Tested
Gel Time	14.0 min	14.0 min	Catalyzed

Descriptive Properties
Color	Beige		Uncatalyzed, QSil 559A
	Black		Uncatalyzed, QSil 559B

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PACC2098 / 199486

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