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Formula: PBI
Form: Rod
Material: Polybenzimidazole
Commodity: Polymers
We offer Polybenzimidazole Rods in a comprehensive range that includes 32 variations. These rods are made of polybenzimidazole (PBI), a high-performance polymer known for its thermal and chemical stability. With a very low coefficient of thermal expansion and the ability to withstand temperatures up to 500°C, PBI rods are used in aerospace components, automotive parts and chemical processing equipment. The choice of diameters and lengths available allows you to select the optimal PBI rods for your specific application.
Tolerances
Rod
| Diameter | +20% / -10% |
|---|
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 |