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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.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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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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