CHT Group QM 140T 40 Shore A, Translucent, Condensation Cure Moldmaking Material

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CHT Group QM 140T 40 Shore A, Translucent, Condensation Cure Moldmaking Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QM 140T is a two-component, translucent, room temperature, condensation cure, silicone material. This material was specifically designed for vacuum bagging applications. When catalyzed with QM Cat Clear Thixo 2 the resulting material is extremely thixotropic. QM 140T is also available for non-thixotropic, flowable, applications when catalyzed with QM Cat Clear. The cured rubber has excellent properties and good shelf life stability. Key Features: High tear strength High thixotropy (if desired) Fast demold time Excellent dimensional stability Main Applications: Molds for polyester, polyurethane and epoxy resin castings Designed specifically for vacuum bag applications Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Original Value	Comments

Specific Gravity	1.00 g/cc	Uncatalyzed Cat Clear
	1.03 g/cc	Uncatalyzed Clear Thixo 2
	1.13 g/cc	Catalyzed Cat Clear
	1.13 g/cc	Catalyzed Clear Thixo 2
	1.15 g/cc	Uncatalyzed QM 130T
Viscosity	100 cP	Uncatalyzed Cat Clear
	200 cP	Uncatalyzed Clear Thixo 2
	120000 cP	Uncatalyzed QM 130T
Linear Mold Shrinkage	<= 0.0030 cm/cm	Cured 3 days RT, Cat Clear
	<= 0.0030 cm/cm	Cured 3 days RT, Catalyzed Clear Thixo 2

Mechanical Properties	Original Value	Comments
Hardness, Shore A	40	Cured 3 days RT, Cat Clear
	40	Cured 3 days RT, Catalyzed Clear Thixo 2
Tensile Strength	500 psi	Cured 3 days RT, Catalyzed Clear Thixo 2
	650 psi	Cured 3 days RT, Cat Clear
Elongation at Break	350 %	Cured 3 days RT, Catalyzed Clear Thixo 2
	500 %	Cured 3 days RT, Cat Clear
Tear Strength	70.0 pli	Cured 3 days RT, Catalyzed Clear Thixo 2
	175 pli	Cured 3 days RT, Cat Clear

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	150 °C	Cured 3 days RT, Cat Clear
	150 °C	Cured 3 days RT, Catalyzed Clear Thixo 2
Minimum Service Temperature, Air	-50.0 °C	Cured 3 days RT, Cat Clear
	-50.0 °C	Cured 3 days RT, Catalyzed Clear Thixo 2

Processing Properties	Original Value	Comments
Cure Time	8.00 - 12.0 hour	Demold time, Catalyzed Clear Thixo 2
	12.0 - 16.0 hour	Demold time, Catalyzed Cat Clear
	72.0 hour @Temperature 25.0 °C	Cat Clear
	72.0 hour @Temperature 25.0 °C	Catalyzed Clear Thixo 2
Tack-Free Time	3.00 - 5.00 hour	Catalyzed Clear Thixo 2
	4.00 - 6.00 hour	Catalyzed Cat Clear
Pot Life	20.0 min	Catalyzed Cat Clear
	20.0 min	Catalyzed Clear Thixo 2

Descriptive Properties
Color	Translucent	Uncatalyzed QM 130T
	Translucent	Uncatalyzed Cat Clear
	Translucent	Uncatalyzed Clear Thixo 2
	Translucent	Catalyzed Cat Clear
	Translucent	Catalyzed Clear Thixo 2

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PACC2043 / 199431

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