Reynolds TASK® 8 Heat Resistant Polyurethane Resin

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Reynolds TASK® 8 Heat Resistant Polyurethane Resin
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced
Material Notes:	Product Overview: TASK™ 8 is a heat resistant polyurethane resin system made specifically for prototyping / casting applications which require thermal resistance of up to 263°F /129°C. TASK™ 8 offers the convenience of a 1A:1B mix ratio and has a very low viscosity, so it is easy to mix and pour. Plastic cures quickly to a Shore 80D and exhibits good physical and performance properties. Heat curing this material is necessary to attain optimal heat resistance. See “Heat Curing” section for curing schedule details. Applications include making machine housings, thermo-forming and general prototyping / casting. Information provided by Reynolds Advanced Materials
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Physical Properties	Original Value	Comments

Specific Gravity	1.09 g/cc	ASTM D-1475
Viscosity	100 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	0.010 in/in	ASTM D-2566

Mechanical Properties	Original Value	Comments
Hardness, Shore D	80	ASTM D-2240
Tensile Strength, Ultimate	5840 psi	ASTM D-638
Elongation at Break	4.0 %	ASTM D-638
Tensile Modulus	246000 psi	ASTM D-638
Flexural Strength	8280 psi	ASTM D-790
Flexural Modulus	271000 psi	ASTM D-790
Compressive Strength	8760 psi	ASTM D-695
Compressive Modulus	77400 psi	ASTM D-695

Thermal Properties	Original Value	Comments
Heat Distortion Temperature	90.0 °C	After Heat Curing; ASTM D-648
	129 °C	After 1 Week At 73°F/23°C; ASTM D-648

Processing Properties	Original Value	Comments
Cure Time	10.0 - 15.0 min	Handling Time
Pot Life	2.50 min	ASTM D-2471

Descriptive Properties
Color	Off-White
Mix Ratio	120A:100B	by weight
	1A:1B	by volume
Specific Volume	25.4	[cu. in./lb.]

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PREYN035 / 296736

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