CHT Group QSil 555 Addition Cure Potting Material

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CHT Group QSil 555 Addition Cure Potting Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QSil 555 is a 100% silicone semi-thixotropic compound designed for potting and encapsulation applications. Key Features: 100% solids - no solvents Long pot life Semi-thixotropic 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	0.970 g/cc	0.970 g/cc	Uncatalyzed, QSil 555B
	1.48 g/cc	1.48 g/cc	Uncatalyzed, QSil 555A
Viscosity	3000 cP	3000 cP	Uncatalyzed, QSil 555B
	80000 cP	80000 cP	Uncatalyzed, QSil 555A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	50	50	Cure 15 minutes at 150°C
Tensile Strength	3.10 MPa	450 psi	Cure 15 minutes at 150°C
Elongation at Break	100 %	100 %	Cure 15 minutes at 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	5.51e+15 ohm-cm	5.51e+15 ohm-cm
Dielectric Constant	3.27 @Frequency 1000 Hz	3.27 @Frequency 1000 Hz
Dissipation Factor	0.0090	0.0090

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	204 °C	399 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F

Processing Properties	Metric	English	Comments
Cure Time	15.0 min @Temperature 150 °C	0.250 hour @Temperature 302 °F
	45.0 min @Temperature 120 °C	0.750 hour @Temperature 248 °F
	60.0 min @Temperature 100 °C	1.00 hour @Temperature 212 °F
Gel Time	>= 4320 min	>= 4320 min	Catalyzed

Descriptive Properties
Color	Clear		Uncatalyzed, QSil 555A
	Clear		Uncatalyzed, QSil 555B

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PACC2096 / 199484

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