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Technical Data Sheet
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DX845 PMP Film

TPX DX845 PMP film provides a unique combination of properties including high transparency, low density, excellent chemical resistance and outstanding electrical properties. A polymethylpentene (PMP) film, it is widely used in packaging applications where clarity and chemical inertness are critical. It is also used as a release film, capacitor dielectric and electrical insulator due to its dielectric strength and low dissipation factor. With a choice of 67 variations, our excellent range of DX845 PMP filmss allows you to select the optimal grade for your project.
Grade: DX845
Formula: TPX®
Thickness: 12.7mm
Length 1: 500mm
Length 2: 500mm
Production Method: Extruded
Colour: Natural
UOM Code: 775-717-50
SKU: 1000129536
Product Code: ME31-SH-000115

Tolerances

Foil
Thickness ±20%

Tolerances

Foil
Thickness ±20%
Technical Data Sheet
Safety Data Sheet
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Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good-Fair
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Fair-Poor
Greases and Oils Good-Fair
Halogenated Hydrocarbons Fair-Poor
Halogens Fair-Poor
Ketones Good-Fair
Electrical Properties
Element Value
Dielectric constant @1MHz 2.12
Dissipation factor @ 1kHz 0.0002
Volume resistivity( Ohmcm ) >10¹⁶
Physical Properties
Element Value
Flammability HB
Refractive index 1.463
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 17
Water absorption - over 24 hours( % ) 0.01
Density( gcm⁻³ ) 0.835
Mechanical Properties
Element Value
Hardness - Rockwell R85
Elongation at break( % ) 15
Tensile modulus( GPa ) 1.5
Izod impact strength( J m⁻¹ ) 49
Tensile strength( MPa ) 25.5
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 100
Heat-deflection temperature - 1.8MPa( C ) 40
Lower working temperature( C ) 20
Upper working temperature( C ) 75-115
Specific heat( J K⁻¹ kg⁻¹ ) 2000
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.17@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 117
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