CHT Group QSil 561 Addition Cure Potting Material

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CHT Group QSil 561 Addition Cure Potting Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QSil 561 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 Fast curing Low modulus Good elongation Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Metric	English	Comments

Specific Gravity	1.58 g/cc	1.58 g/cc	Uncatalyzed, QSil 561A
	1.58 g/cc	1.58 g/cc	Uncatalyzed, QSil 561B
Viscosity	7500 cP	7500 cP	Uncatalyzed, QSil 561B
	9000 cP	9000 cP	Uncatalyzed, QSil 561A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	60	60	Cure 15 minutes at 150°C
Tensile Strength	1.72 MPa	250 psi	Cure 15 minutes at 150°C
Elongation at Break	125 %	125 %	Cure 15 minutes at 150°C
Tear Strength	3.51 kN/m	20.0 pli	Cure 15 minutes at 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm
Dielectric Constant	3.2 @Frequency 1000 Hz	3.2 @Frequency 1000 Hz
Dissipation Factor	0.0020	0.0020

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.620 W/m-K	4.30 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	240 °C	464 °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	10.0 min	10.0 min	Catalyzed

Descriptive Properties
Color	Beige		Uncatalyzed, QSil 561B
	Dark Gray		Uncatalyzed, QSil 561A

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PACC2099 / 199487

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