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Cross-Linked Polystyrene Film

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Commodity: Polymers Material: Polystyrene (PS) Form: Foil/Film/Sheet Composition: PS - X - Linked Grade: Cross-Linked CAS Number: 9003-53-6
Cross-Linked Polystyrene Film, based on polystyrene, is a polymeric material that achieves enhanced mechanical and thermal stability through a cross-linked network structure. In thin-film form, it exhibits high dimensional stability, resistance to solvents, and improved thermal endurance compared to standard polystyrene films. Industries such as microelectronics, packaging, and advanced coatings employ cross-linked PS film for insulating layers, barrier films, and protective coatings. Specific applications include dielectric layers in printed circuit boards, solvent-resistant membranes in laboratory filtration, and protective coatings in microfabrication. In research, cross-linked PS films are investigated for thermal degradation mechanisms, surface modification for improved adhesion, and role as a model polymer in thin-film studies. Their balance of mechanical rigidity, thermal stability, and processing versatility makes them crucial in applications requiring strong, stable polymer films.
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Material Properties

Chemical Resistance
Element Value
Acids - concentrated Fair-Poor
Acids - dilute Good(-Fair?)
Alcohols Good(-Fair?)
Alkalis Good-Fair
Aromatic hydrocarbons Poor
Greases and Oils Fair-Poor
Halogenated Hydrocarbons Poor
Halogens Poor
Ketones Poor
Electrical Properties
Element Value
Dielectric constant @1MHz 2.5
Dissipation factor @ 1MHz 0.0002
Dielectric strength( kV mm⁻¹ ) 27-47
Surface resistivity( Ohm/sq ) >10¹⁵
Volume resistivity( Ohmcm ) >10¹⁵
Physical Properties
Element Value
Flammability HB
Radiation resistance Good
Refractive index 1.59
Water absorption - over 24 hours( % ) 0.02-0.03
Density( gcm⁻³ ) 1.05
Mechanical Properties
Element Value
Hardness - Rockwell R110-120
Elongation at break( % ) 03-May
Tensile modulus( GPa ) 1.65
Abrasive resistance - ASTM D1044( mg/1000 cycles ) 60-100
Tensile strength( MPa ) 55-70
Thermal Properties
Element Value
Upper working temperature( C ) 93
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.17@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 70-90
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Available Configurations

Properties common to all products in this list

Commodity: Polymers Material: Polystyrene (PS) Form: Foil/Film/Sheet Composition: PS - X - Linked Grade: Cross-Linked CAS Number: 9003-53-6

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Tolerances

Foil/Film/Sheet
Thickness ±20%