3M Scotchcast™ 2131 Flame-Retardant Compound

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3M Scotchcast™ 2131 Flame-Retardant Compound
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	3M Scotchcast Flame-Retardant Compound 2131 is a two-part polyurethane resin designed to replace the cable jacket when splicing or repairing mine and portable cables. It formulation makes it particularly suited to withstand the rugged conditions under which mine and portable cables must operate. Flame-Retardant Compound 2131 is also used as the insulating material for cable splices operating at up to 1000 volts and designed for 90°C continuous use/130°C overload. When used in accordance with the appropriate kit configuration, Compound 2131 meets Part 7, Title 30 CFR and carries the following MSHA approvals. Information provided by 3M
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Physical Properties	Metric	English	Comments

Density	1.217 g/cc	0.04397 lb/in³
Moisture Absorption	4.90 %	4.90 %	ASTM D471

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	82	82	ASTM D2240
Tensile Strength at Break	7.16 MPa	1040 psi	ASTM D412
Elongation at Break	339 %	339 %	ASTM D412

Electrical Properties	Metric	English	Comments
Dielectric Constant	5.22 @Frequency 60.0 Hz, Temperature 23.0 °C	5.22 @Frequency 60.0 Hz, Temperature 73.4 °F	ASTM D150
	6.33 @Frequency 60.0 Hz, Temperature 60.0 °C	6.33 @Frequency 60.0 Hz, Temperature 140 °F	ASTM D150
	6.56 @Frequency 60.0 Hz, Temperature 90.0 °C	6.56 @Frequency 60.0 Hz, Temperature 194 °F	ASTM D150
Dielectric Strength	13.5 kV/mm	343 kV/in	ASTM D149

Thermal Properties	Metric	English	Comments
Glass Transition Temp, Tg	-75.0 °C	-103 °F

Processing Properties	Metric	English	Comments
Cure Time	960 - 1440 min @Temperature 21.0 °C	16.0 - 24.0 hour @Temperature 69.8 °F	De-Mold Time: 1.5-2 hrs
	1440 - 1800 min @Temperature 10.0 °C	24.0 - 30.0 hour @Temperature 50.0 °F	De-Mold Time: 3.5-4 hrs
	>= 2160 min @Temperature 0.000 °C	>= 36.0 hour @Temperature 32.0 °F	De-Mold Time: 6-8 hrs
Gel Time	17.0 min	17.0 min	3M Method TM-87

Descriptive Properties
Appearance	Black

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PMM35236 / 169983

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