Lexan® 8B28 Polycarbonate Coil

Lexan® 8B28 Polycarbonate Coil is distinguished by its high impact resistance, optical clarity, and thermal stability, properties that make it a preferred engineering polymer in high-performance applications. In coil form, it offers processing flexibility and ease of integration into manufacturing workflows. Industries such as automotive, aerospace, electronics, and optics make extensive use of this material due to its balance of toughness and transparency. Specific applications include automotive forward lighting systems, protective films in electronics, and precision optical components, where both mechanical resilience and optical precision are essential. In research, Lexan® 8B28 Polycarbonate Coil is widely studied under irradiation and ion implantation, enabling advancements in modifying hardness, wear resistance, and optical behavior. Its ability to combine durability with tunable performance ensures its importance across both applied industrial production and experimental material science, serving as a vital link between engineering design and innovation.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Coil

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