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Grade: DX845
Formula: PMP TPX®
Form: Foil/Film/Sheet
Material: Polymethylpentene (PMP, TPX™)
Commodity: Polymers
DX845 Polymethylpentene (PMP) Film offers targeted functionality for laboratory research and industrial applications in areas such as gas separation, microfluidics, and electrochemical membrane development. With selective gas permeability (notably for O₂ and CO₂), chemical resistance, and stable optical clarity (~88–90% transmittance), PMP is a thermoplastic polyolefin that supports precision applications in spectroscopy, diagnostics, and sensor housing. Commonly referred to as TPX™, its thermal tolerance up to 120 °C under load enables compatibility with heated environments and solvent exposure. The film’s moderate dielectric constant (~2.1–2.3) suits RF and high-frequency circuit testing. DX845 can be plasma-treated or chemically grafted for integration into modified ion-exchange systems, aiding R&D in energy interfaces and advanced polymer membranes. Its properties support reliable use in controlled experimental workflows and custom device fabrication.
Tolerances
Foil/Film/Sheet
| Thickness | ±20% |
|---|
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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Zinc Foil Formula: Zn
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Zirconium Foil Formula: Zr
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Yttria-stabilized Zirconia Sheet (5% Yttria) Formula: ZrO₂/Y₂O₃
Thickness: 1mm
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Length 2: 25mm
Stabilised With: 5% Yttria
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Yttrium Foil Formula: Y
Percentage Purity: 99%
Temper: As Rolled
Thickness: 0.1mm
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Length 2: 50mm
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Ytterbium Foil Formula: Yb
Percentage Purity: 99%
Temper: As Rolled
Thickness: 0.005mm
Length 1: 25mm
Length 2: 25mm
CAS Number: 7440-64-4
UOM Code: 000-446-82
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