ITW Insulcast® 42 Epoxy Potting/Encapsulation Compound

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ITW Insulcast® 42 Epoxy Potting/Encapsulation Compound
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Insulcast® solutions are compounds designed for potting and encapsulating. INSULCAST 42 is a low viscosity unique silicone-epoxy co-polymer formulated to withstand severe thermal shock, low moisture absorption and excellent dielectric insulation. INSULCAST 42 bonds well to most metals and plastics. Information provided by ITW Performance Polymers.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.03 g/cc	1.03 g/cc	Uncured. Part B; ASTM D1084
	1.64 g/cc	1.64 g/cc	Uncured. Part A; ASTM D1084
Viscosity	60 cP	60 cP	Uncured. Part B
	12000 - 18000 cP	12000 - 18000 cP	Uncured, mixed; ASTM D1084
	16000 cP	16000 cP	Part A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	>= 75	>= 75	ASTM D2240
	<= 80	<= 80
Hardness, Shore D	10 - 15	10 - 15	ASTM D2240
Tensile Strength	6.21 MPa	900 psi	ASTM D412
Elongation at Break	175 %	175 %	ASTM D412
Tear Strength	0.00450 kN/m	0.0257 pli
	7.01 kN/m	40.0 pli	Die B; ASTM D624

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm	ASTM D257
Dielectric Constant	4.0 @Frequency 1000 Hz	4.0 @Frequency 1000 Hz	ASTM D150
Dielectric Strength	19.7 kV/mm	500 kV/in	ASTM D149
Dissipation Factor	0.00060 @Frequency 1000 Hz	0.00060 @Frequency 1000 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	45.0 µm/m-°C	25.0 µin/in-°F
Thermal Conductivity	0.605 W/m-K	4.20 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	125 °C	257 °F
	155 °C	311 °F	intermittent use
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F
Flammability, UL94	V-0	V-0
Shrinkage	0.20 - 0.50 %	0.20 - 0.50 %

Processing Properties	Metric	English	Comments
Pot Life	20.0 - 30.0 min @Temperature 25.0 °C	20.0 - 30.0 min @Temperature 77.0 °F
Shelf Life	6.00 Month	6.00 Month

Descriptive Properties
Color	Black		Uncured. Part A
	Clear or dark		Uncured. Part B
Mix Ratio by volume	100:15
Mix Ratio by weight	100:10

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PITWIN9095 / 239605

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