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Copolimero cicloolefinico  ( Topas )

Informazioni sul Materiale

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Chemical Resistance

Acids - dilute Good
Alcohols Good
Alkalis Good
Greases and Oils Fair-Poor

Electrical Properties

Surface resistivity ( Ohm/sq ) 1014
Volume resistivity ( Ohmcm ) 1012

Mechanical Properties

Elongation at break ( % ) 3
Tensile modulus ( GPa ) 3,1
Tensile strength ( MPa ) 66

Physical Properties

Abbe number 58
Density ( g cm-3 ) 1,02
Flammability HB
Optical transmission ( % ) 92-94
Radiation resistance Good
Refractive index 1,53
Resistance to Ultra-violet Fair-Poor
Water absorption ( % ) <0,01
Water absorption - over 24 hours ( % ) <0,01

Thermal Properties

Coefficient of thermal expansion ( x10-6 K-1 ) 60
Heat-deflection temperature - 0.45MPa ( C ) 130
Thermal conductivity @0.16C ( W m-1 K-1 )

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Standard products are available in these forms
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Index