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Formula: PBI
Form: Foil/Film/Sheet
Material: Polybenzimidazole (PBI)
Commodity: Polymers
Polybenzimidazole films are a high performance polymer material available in 13 variations. These film offer a range of properties, including excellent thermal stability, low flammability and good chemical resistance. These unique properties make them suitable for specialty applications like fireproof protective apparel, electrical insulation, filtration media and aerospace components. Polybenzimidazole films are a great example of the breadth of advanced materials we offer for demanding industrial applications.
Tolerances
Foil/Film/Sheet
| Thickness | ±20% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Fair-Poor |
| Alcohols | Good |
| Alkalis | Good-Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Ketones | Good |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.19-0.27 |
| Hardness - Rockwell | K115 |
| Poisson's ratio | 0.34 |
| Elongation at break( % ) | 3 |
| Compressive modulus( GPa ) | 6.2 |
| Tensile modulus( GPa ) | 5.9 |
| Izod impact strength( J m⁻¹ ) | 590unnotched |
| Tensile strength( MPa ) | 160 |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 3.2 |
| Dielectric strength( kV mm⁻¹ ) | 21 |
| Volume resistivity( Ohmcm ) | 8x10¹⁴ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | Does not burn |
| Radiation resistance | Good |
| Limiting oxygen index( % ) | 58 |
| Water absorption - over 24 hours( % ) | 0.4 |
| Density( gcm⁻³ ) | 1.3 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 435 |
| Upper working temperature( C ) | 260-400 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.41@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 23 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 400 |
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