ITW Insulcast® 987 Epoxy Potting/Encapsulation Compound

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ITW Insulcast® 987 Epoxy Potting/Encapsulation Compound
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Insulcast® solutions are compounds designed for potting and encapsulating. INSULCAST 987 is a semi-flexible, potting compound that exhibits excellent electrical and physical properties over a wide range of temperatures. Information provided by ITW Performance Polymers.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.37 g/cc	1.37 g/cc	uncured
	1.41 g/cc	1.41 g/cc	uncured
Viscosity	50000 cP	50000 cP	Uncured. Part B; ASTM D2393
	60000 cP	60000 cP	Uncured, mixed; ASTM D2393
	80000 cP @Temperature 23.0 °C	80000 cP @Temperature 73.4 °F	Part A; ASTM D2393

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	65	65	ASTM D2240

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm	ASTM D257
Dielectric Constant	4.9 @Frequency 1000 Hz	4.9 @Frequency 1000 Hz	cured; ASTM D150
Dielectric Strength	14.8 kV/mm	375 kV/in	ASTM D149
Dissipation Factor	0.050 @Frequency 1000 Hz	0.050 @Frequency 1000 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	45.0 µm/m-°C	25.0 µin/in-°F
Thermal Conductivity	0.418 W/m-K	2.90 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	155 °C	311 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F

Processing Properties	Metric	English	Comments
Pot Life	>= 2800 min @Temperature 23.3 °C	>= 2800 min @Temperature 74.0 °F
Shelf Life	12.0 Month	12.0 Month

Descriptive Properties
Color	neutral		part A, uncured
	neutral		part B, uncured
Mix Ratio by weight	2 to 3		Part A: Part B

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PITWIN9104 / 239614

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