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Polystyrene - Cross-linked ( PS - X - Linked )

Material Information

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We stock and supply the following standard forms:
Rod Sheet
Rod Sheet

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Common Brand Names:
Q.200.5, Rexolite
 
General Description:  

General Description : A cross-linked polystyrene copolymer which is rigid, transparent and colorless with outstanding electrical properties, including low dielectric losses up to very high frequencies, and very high radiation resistance. It has good dimensional stability, is easily machined and can be polished to a high optical quality. Compared to normal polystyrene, it is harder and somewhat more temperature resistant.

It is used primarily as a dielectric material in a wide range of components together with lenses, observation windows, X-ray equipment and radiation detectors.

   

Chemical Resistance

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

Dielectric constant @1MHz 2.5
Dielectric strength ( kV mm-1 ) 27-47
Dissipation factor @ 1MHz 0.0002
Surface resistivity ( Ohm/sq ) >1015
Volume resistivity ( Ohmcm ) >1015

Mechanical Properties

Abrasive resistance - ASTM D1044 ( mg/1000 cycles ) 60-100
Elongation at break ( % ) 3-5
Hardness - Rockwell R110-120
Tensile modulus ( GPa ) 1.65
Tensile strength ( MPa ) 55-70

Physical Properties

Density ( g cm-3 ) 1.05
Flammability HB
Radiation resistance Good
Refractive index 1.59
Water absorption - over 24 hours ( % ) 0.02-0.03

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 70-90
Thermal conductivity @23C ( W m-1 K-1 ) 0.17
Upper working temperature ( C ) 93
All information and technical data are given as a guide only. Although every effort has been made to ensure that the information is correct, no warranty is given as to its completeness or accuracy.

Buy Polystyrene - Cross-linked on-line

We stock and supply the following standard forms:
Rod Sheet
Rod Sheet

Choose a form to search our on-line catalog  

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