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Formula: Polymetaphenylene isophthalamide
Form: Disk
Material: Polyaramid
Commodity: Polymers
The Polyaramid Disk (Polymetaphenylene isophthalamide) is a high-performance and versatile polymer material that’s strong yet lightweight. Available in a choice of 9 diameters and thicknesses, these disks exhibit properties like high tensile strength, thermal stability and chemical resistance. They are commonly used across many industries, with applications including high-speed bearings and bushings, electrical insulators, and wear-resistant mechanical components. Our wide range of Polyaramid disks give engineers the ability to select the optimal Disk dimensions to suit their specific application requirements.
Tolerances
Disk
| Thickness | ±20% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Good-Fair |
| Alcohols | Good |
| Alkalis | Good-Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Ketones | Good |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1kHz | 2.3 |
| Dielectric strength( kV mm⁻¹ ) | 32 |
| Volume resistivity( Ohmcm ) | 6x10¹⁶ |
Physical Properties
| Element | Value |
|---|---|
| Radiation resistance | Good |
| Limiting oxygen index( % ) | 29 |
| Water absorption - equilibrium( % ) | 9 |
| Water absorption - over 24 hours( % ) | 0.08 |
| Density( gcm⁻³ ) | 1.38 |
Mechanical Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | 9 |
| Izod impact strength( J m⁻¹ ) | 533unnotched |
| Tensile strength( MPa ) | 1800-3900 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 1.8MPa( C ) | 149 |
| Upper working temperature( C ) | 200-300 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1200 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.13@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 20 |