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Formula: Acetal - Homopolymer POMH
Form: Foil
Material: POM Homopolymer
CAS Number: 9002-81-7
Commodity: Polymers
POM Homopolymer films is a high-performance polymer film. It exhibits excellent strength, rigidity and stability at elevated temperatures along with low moisture absorption. With 28 variations available, this film is used across scientific research and industrial applications requiring precision machined parts with tight tolerances, low friction and good chemical resistance. Typical applications include food processing equipment, pharmaceutical manufacturing and analytical instrumentation.
Tolerances
Foil
| Thickness | ±20% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Poor - Fair |
| Alcohols | Good-Fair |
| Alkalis | Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good-Poor(?) |
| Halogens | Poor |
| Ketones | Good - Fair |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.2-0.35 |
| Hardness - Rockwell | M94 |
| Poisson's ratio | 0.35 |
| Elongation at break( % ) | 40-75 |
| Tensile modulus( GPa ) | 2.9-3.1 |
| Izod impact strength( J m⁻¹ ) | 75-130 |
| Tensile strength( MPa ) | 70 |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 3.7 |
| Dissipation factor @ 1MHz | 0.005 |
| Dielectric strength( kV mm⁻¹ ) | 20 |
| Surface resistivity( Ohm/sq ) | 10¹⁵ |
| Volume resistivity( Ohmcm ) | 10¹⁵ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | HB |
| Radiation resistance | Poor |
| Resistance to Ultra-violet | Poor |
| Limiting oxygen index( % ) | 15 |
| Water absorption - equilibrium( % ) | 0.6-0.9 |
| Water absorption - over 24 hours( % ) | 0.25 |
| Density( gcm⁻³ ) | 1.42 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 170 |
| Heat-deflection temperature - 1.8MPa( C ) | 135 |
| Upper working temperature( C ) | 80-120 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1500 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.22-0.24@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 122 |
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