CR Corona Resistant Polyimide Film

Model:CR
CR polyimide film was developed specifically to withstand the damaging effects of “corona”, which can cause ionization and eventual breakdown of insulation material or system when the voltage stress reaches a critical level. CR polyimide film has preserved the physical, mechanical property of polyimide film as it does, as well as the outstanding corona-resistant property.


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Specification

CR polyimide film was developed specifically to withstand the damaging effects of “corona”, which can cause ionization and eventual breakdown of an insulation material or system when the voltage stress reaches a critical level. Corona resistant polyimide film has preserved the physical, mechanical property of polyimide film as it does, as well as the outstanding corona-resistant property.

Features

CR polyimide film has preserved the physical, mechanical property of polyimide film as it does, as well as the outstanding corona-resistant property. environment-friendly with halogen-free, highest UL-94 flammability rating: V-0。

Parameters 

Property

Unit

CR25

CR50

Test Method

Thickness

μm

25±3

50±3

ASTM D374

Width

mm

520

ASTM D374

Tensile Strength

MD

Mpa

125

125

ASTM D882

TD

Mpa

110

110

ASTM D882

Elongation

MD

%

30

30

ASTM D882

TD

%

40

35

ASTM D882

Dielectric Strength

KV

≥4.0

≥5.0

ASTM D149

Dielectric Constant

-

3.6

ASTM D150

Corona Resistant Performance

-

electric current 6 Am, up to 290ns, breakdown time 483min


                                                                    Remark: The above data are for reference only

Pictures 

 CR Corona Resistant Polyimide Film
CR Corona Resistant Polyimide Film
 CR Corona Resistant Polyimide Film
CR Corona Resistant Polyimide Film
 CR Corona Resistant Polyimide Film
CR Corona Resistant Polyimide Film
 CR Corona Resistant Polyimide Film
CR Corona Resistant Polyimide Film

Application

Wind power generator, variable frequency motor, traction motor, electrical rotating machine, high voltage transformer , magnetic wire wrap, super high-voltage cable insulation.



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