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Polybenzimidazole Film

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Commodity: Polymers Material: Polybenzimidazole (PBI) Form: Foil/Film/Sheet Composition: PBI
Polybenzimidazole Film offers exceptional thermal stability, flame resistance, and chemical inertness in a thin, flexible format ideal for insulating and barrier applications in extreme environments. Its high glass transition temperature and excellent dielectric properties make it suitable for aerospace thermal shields, high-temperature electrical insulation, and chemically resistant membranes. The film form allows precise control over thickness for use in protective layers for circuit boards, fuel cell membranes, and flexible thermal barriers in engines. Research employs PBI films in advanced polymer composite development, durability testing under combined heat and chemical stress, and next-generation high-temperature filtration systems. Combining flexibility with extreme environmental tolerance, PBI film is a critical choice where both conformability and top-tier thermal and chemical performance are essential.
Starting at $415.00 each
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Material Properties

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
each

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Available Configurations

Properties common to all products in this list

Commodity: Polymers Material: Polybenzimidazole (PBI) Form: Foil/Film/Sheet Composition: PBI

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Tolerances

Foil/Film/Sheet
Thickness ±20%