3M™ Scotchcast™ Flame-Retardant Electrical Insulating Resin 2131

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Typical Physical

and Electrical

Properties

Not for specifications. Values are typical, not to be considered minimum or maximum.

Properties measured at room temperature 73°F (23°C) unless otherwise stated.

Physical Properties (Test Method)

Typical Value

US units (metric)

Color

Black

Hardness (ASTM D2240)

82 Shore A

Density

0.703 oz/in

Tensile Strength (ASTM D412)

1038 psi (73,0 kg/cm

Elongation (ASTM D412)

339%

-103 ºF (-75ºC)

Maximum Exotherm, 100g (3M TM-67)

147ºF (64ºC) rise

Gel Time @ 75ºF (23ºC) (3M Method TM-67)

17 minutes

Viscosity (cP) @ 77°F (25°C) (3M Method TM-173)

Part A

Prepolymer

Part B

Polyol

600 - 1,100

4,000 - 10,000

Specific Gravity (ASTM D891)

Part A

Prepolymer

Part B

Polyol

1.08

1.29

Moisture Absorption (ASTM D471)

168 hrs. Immersion @ 212ºF (100ºC)

4.9%

Adhesion to Metals (lb/in

Copper

550.2

Brass

274

Steel

491.3

Aluminum

221

Adhesion to Cable Jackets (lb/in

Vinyl

125

Neoprene

115

Nylon

>72

XLPE

208.5

Electrical Properties (Test Method)

Typical Value

Dielectric Strength (ASTM D149)

343 V/mil (13,5 kV/mm)

Dielectric Constant, @ 60Hz

(ASTM D150)

5.22 @ 73ºF (23ºC)

6.33 @140ºF (60ºC)

6.56 @194ºF (90ºC)

Dissipation Factor, @ 60Hz

(ASTM D150)

5.6% @ 73ºF (23ºC)

7.9% @140ºF (60ºC)

17.0% @194ºF (90ºC)