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Westlake Plastics

Westlake Plastics PMP Film Made from TPX® Polymethylpentene Resin
Categories: Polymer; Film; Thermoplastic; Polymethylpentene (PMP); Polymethylpentene, Molded
Material Notes: Lowest specific gravity of any known thermoplastic. Exceptional electrical properties. Good chemical resistance. High heat resistance. Excellent acoustical properties. Transparency. FDA compliant.

TPX® is a trade name of Mitsui Plastics Inc. Information provided by Westlake Plastics.
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Physical PropertiesMetricEnglishComments
Density 0.835 g/cc0.0302 lb/in³ASTM D792
Water Absorption 0.010 %0.010 %ASTM D570; 24 hrs.
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength at Break 28.3 MPa4110 psiASTM D882
Elongation at Break 10 %10 %ASTM D882
Tensile Modulus 1.93 GPa280 ksiASTM D882
Flexural Modulus 1.45 GPa210 ksiASTM D790
Tear Strength 48.1 kN/m274 pliASTM D1004
 
Electrical PropertiesMetricEnglishComments
Surface Resistance >= 1.00e+16 ohm>= 1.00e+16 ohmASTM D257
Dielectric Constant 2.12
@Frequency 1000 Hz		2.12
@Frequency 1000 Hz		ASTM D150
Dielectric Strength 146 kV/mm
@Thickness 0.0762 mm		3710 kV/in
@Thickness 0.00300 in		ASTM D149
Dissipation Factor 0.000025
@Frequency 1000 Hz		0.000025
@Frequency 1000 Hz		ASTM D150
 
Thermal PropertiesMetricEnglishComments
Melting Point 235 °C455 °FDSC
Maximum Service Temperature, Air 100 °C212 °FContinuous Use
Deflection Temperature at 0.46 MPa (66 psi) 100 °C212 °FASTM D648
Flammability, UL94 HBHB
Oxygen Index <= 25 %<= 25 %ASTM D2863
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.4631.463
Haze 2.0 %2.0 %ASTM D1003
 
Compliance PropertiesMetricEnglishComments
FDA YesYes

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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Mitsui TPX® RT18 Methylpentene Copolymer, Transparent Grade
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PWEST084 / 72743




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