CHT Group QSil 553LV Addition Cure Potting Material

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CHT Group QSil 553LV Addition Cure Potting Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QSil 553LV is a 100% silicone solids elastomer, designed for electronic potting applications. The two-component system offers a flame retardant, thermally conductive, low modulus material that is readily repairable. Key Features: 100% solids - no solvents Long pot life Low modulus Good elongation Material is UL listed (effective 3/1/13) Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Metric	English	Comments

Specific Gravity	1.60 g/cc	1.60 g/cc	Uncatalyzed, QSil 553LV A
	1.60 g/cc	1.60 g/cc	Uncatalyzed, QSil 553LV C
Viscosity	4000 cP	4000 cP	Uncatalyzed, QSil 553LV A
	4000 cP	4000 cP	Uncatalyzed, QSil 553LV C

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	45	45	Cure 15 minutes at 150°C
Tensile Strength	1.72 MPa	250 psi	Cure 15 minutes at 150°C
Elongation at Break	240 %	240 %	Cure 15 minutes at 150°C
100% Modulus	1.24 MPa @Strain 100 %	180 psi @Strain 100 %	Cured 15 minutes at 150°C
Tear Strength	7.89 kN/m	45.0 pli	Cure 15 minutes at 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	4.02e+14 ohm-cm	4.02e+14 ohm-cm
Dielectric Constant	3.08 @Frequency 1000 Hz	3.08 @Frequency 1000 Hz
Dissipation Factor	0.0090	0.0090
Comparative Tracking Index	600 V	600 V

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.650 W/m-K	4.51 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	100 min	100 min	Catalyzed

Descriptive Properties
Color	Beige		Uncatalyzed, QSil 553LV A
	Black		Uncatalyzed, QSil 553LV C

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PACC2095 / 199483

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