CHT Group QM 237 37 Shore A, Addition Cure Moldmaking Material

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CHT Group QM 237 37 Shore A, Addition Cure Moldmaking Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QM 237 is a two-component, room temperature, addition cure, silicone material. The cured rubber has excellent mechanical properties and good shelf-life stability. This material is a good choice for the molding of furniture, picture frames and architectural materials. QM 237 is exceptionally good where highly detailed parts and mold flexibility are required. Key Features: Low viscosity Fast demold time Casting resin resistance Excellent flexibility Main Applications: Low viscosity Fast demold time Casting resin resistance Excellent flexibility Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Original Value	Comments

Specific Gravity	0.970 g/cc	QM 237B, Uncatalyzed
	1.32 g/cc	QM 237A, Uncatalyzed
Viscosity	2000 cP	QM 237B, Uncatalyzed
	10000 cP	Catalyzed
	17000 cP	QM 237A, Uncatalyzed
Linear Mold Shrinkage	<= 0.0010 cm/cm	Cured 3 days at 25°C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	37	Cured 3 days at 25°C
Tensile Strength	525 psi	Cured 3 days at 25°C

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	204 °C	Cured 3 days at 25°C
Minimum Service Temperature, Air	-55.0 °C	Cured 3 days at 25°C

Processing Properties	Original Value	Comments
Cure Time	6.00 - 8.00 hour	Demold time, Catalyzed
	72.0 hour @Temperature 25.0 °C
Pot Life	35.0 min	Catalyzed

Descriptive Properties
Color	Beige	QM 237A, Uncatalyzed
	Blue	Catalyzed
	Dark Blue	QM 237B, Uncatalyzed

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PACC2049 / 199437

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