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	Metric	English	Comments

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

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	40	40	Cured 3 days RT, Cat Clear
	40	40	Cured 3 days RT, Catalyzed Clear Thixo 2
Tensile Strength	3.45 MPa	500 psi	Cured 3 days RT, Catalyzed Clear Thixo 2
	4.48 MPa	650 psi	Cured 3 days RT, Cat Clear
Elongation at Break	350 %	350 %	Cured 3 days RT, Catalyzed Clear Thixo 2
	500 %	500 %	Cured 3 days RT, Cat Clear
Tear Strength	12.3 kN/m	70.0 pli	Cured 3 days RT, Catalyzed Clear Thixo 2
	30.7 kN/m	175 pli	Cured 3 days RT, Cat Clear

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	150 °C	302 °F	Cured 3 days RT, Cat Clear
	150 °C	302 °F	Cured 3 days RT, Catalyzed Clear Thixo 2
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F	Cured 3 days RT, Cat Clear
	-50.0 °C	-58.0 °F	Cured 3 days RT, Catalyzed Clear Thixo 2

Processing Properties	Metric	English	Comments
Cure Time	480 - 720 min	8.00 - 12.0 hour	Demold time, Catalyzed Clear Thixo 2
	720 - 960 min	12.0 - 16.0 hour	Demold time, Catalyzed Cat Clear
	4320 min @Temperature 25.0 °C	72.0 hour @Temperature 77.0 °F	Cat Clear
	4320 min @Temperature 25.0 °C	72.0 hour @Temperature 77.0 °F	Catalyzed Clear Thixo 2
Tack-Free Time	180 - 300 min	3.00 - 5.00 hour	Catalyzed Clear Thixo 2
	240 - 360 min	4.00 - 6.00 hour	Catalyzed Cat Clear
Pot Life	20.0 min	20.0 min	Catalyzed Cat Clear
	20.0 min	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

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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PACC2043 / 199431

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