CHT Group QSil 550LV A/B Addition Cure Potting Material

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CHT Group QSil 550LV A/B Addition Cure Potting Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	QSil 550LV A and B is a 100% silicone solids elastomer designed for electronic potting applications. The two-component system offers a hard, thermally conductive, low modulus material that is readily repairable. Key Features: 100% solids - no solvents Long pot life Low modulus Good elongation Heat cure required Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Metric	English	Comments

Specific Gravity	1.41 g/cc	1.41 g/cc	Uncatalyzed, QSil 550LV A
	1.41 g/cc	1.41 g/cc	Uncatalyzed, QSil 550LV B
Viscosity	1300 cP	1300 cP	Uncatalyzed, QSil 550LV A
	1500 cP	1500 cP	Uncatalyzed, QSil 550LV B

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	58	58	Cure 7 minutes at 150°C
Tensile Strength	2.96 MPa	430 psi	Cure 7 minutes at 150°C
Elongation at Break	85 %	85 %	Cure 7 minutes at 150°C
Tensile Modulus	0.00352 GPa	0.510 ksi	Young's, Cure 7 minutes at 150°C
Tear Strength	3.51 kN/m	20.0 pli	Cure 7 minutes at 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.46e+15 ohm-cm	1.46e+15 ohm-cm
Dielectric Constant	3.12 @Frequency 1000 Hz	3.12 @Frequency 1000 Hz
Dielectric Strength	21.2 kV/mm	538 kV/in
Dissipation Factor	0.0030 @Frequency 1000 Hz	0.0030 @Frequency 1000 Hz

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	10.0 min @Temperature 150 °C	0.167 hour @Temperature 302 °F
	15.0 min @Temperature 125 °C	0.250 hour @Temperature 257 °F
	30.0 min @Temperature 100 °C	0.500 hour @Temperature 212 °F
Gel Time	>= 1440 min	>= 1440 min	Catalyzed

Descriptive Properties
Color	Beige		Uncatalyzed, QSil 550LV A
	Black		Uncatalyzed, QSil 550LV B

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PACC2093 / 199481

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