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Grade: Lexan® 8B28
Formula: PC
Form: Foil/Film/Sheet
Material: Polycarbonate (PC)
CAS Number: 25766-59-0
Commodity: Polymers

Lexan® 8B28 Polycarbonate Film

Lexan® 8B28 Polycarbonate films comes in 17 variations that differ in thickness, width, length and quantity. Polycarbonate films like Lexan® 8B28 feature high optical clarity, impact and heat resistance, as well as electrical insulation properties. These attributes make Lexan® polycarbonate films ideal for applications in glazing, safety screens, medical devices and electrical insulation. With its range of sizes and thicknesses, Lexan® 8B28 provides versatile solutions for engineers across industries.
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Tolerances

Foil/Film/Sheet
Thickness ±20%

Material Properties for Polymers

Physical Properties
Element Value
Abbe number 34
Flammability V0-V2
Radiation resistance Fair
Refractive index 1.584-6
Resistance to Ultra-violet Fair
Limiting oxygen index( % ) 25-27
Water absorption - equilibrium( % ) 0.35
Water absorption - over 24 hours( % ) 0.1
Density( gcm⁻³ ) 1.2
Chemical Resistance
Element Value
Acids - concentrated Good
Acids - dilute Good
Alcohols Good
Alkalis Good-Poor
Aromatic hydrocarbons Poor
Greases and Oils Good-Fair
Halogenated Hydrocarbons Good-Poor
Halogens Poor
Ketones Poor
Mechanical Properties
Element Value
Coefficient of friction 0.31
Hardness - Rockwell M70
Poisson's ratio 0.37
Elongation at break( % ) 100-150
Tensile modulus( GPa ) 2.3-2.4
Izod impact strength( J m⁻¹ ) 600-850
Abrasive resistance - ASTM D1044( mg/1000 cycles ) Oct-15
Tensile strength( MPa ) 55-75
Electrical Properties
Element Value
Dielectric constant @1MHz 2.9
Dissipation factor @ 1MHz 0.01
Dielectric strength( kV mm⁻¹ ) 15-67
Surface resistivity( Ohm/sq ) 10¹⁵
Volume resistivity( Ohmcm ) 10¹⁴-10¹⁶
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 140
Heat-deflection temperature - 1.8MPa( C ) 128-138
Lower working temperature( C ) -135
Upper working temperature( C ) 115-130
Specific heat( J K⁻¹ kg⁻¹ ) 1200
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.19-0.22@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 66-70
Pultrusions
Element Value
Compressive strength( MPa ) >80

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