Corona resistance polyimide films ,not only with ordinary polyimide
film electrical properties, good heat resistance and resistance
chemicals, but also with the super corona resistance and good
thermal conductivity performance, mainly apply to sintering
electromagnetic winding wire ,traction motor, wind generators, and
the special motor turn-to-turn insulation and heat insulation, the
heat resistance level is a class C.
The technical
requirements
1.
Type CR type:Corona
resistance polyimide film without any coating
FCR type: Corona resistance polyimide film with F*6 single side
coating
FCRF type: Corona resistance polyimide film with F*6 double side
coating
2.
Appearance
its appearance is golden brown, translucent, the surface is bright
and clean, no wrinkles, tear, particles, bubble, pinhole and
foreign material defects. Its edge is tidy, and without
damage. 3. Thickness and allowable
deviation
Model
|
CR type
|
FCR type
|
FCRF type
|
Thickness(um)
|
*5
|
*8
|
*0
|
Allowable deviation(um)
|
±2
|
±3
|
±3
|
Note: coating thickness may be based on customer demand in 5 ~ *2.5
um range regulation. 4.
Width and allowable deviation
Width may cut according to the customer request within **0 ****0
mm. Each volume length is for *******0 m; Each volume joints for
final product are not more than three, the proportion of volumes
with joints vs the total volumes number in the one order is not
more than *5%,the shortest length is more than **0 m; Single plate
or roll products joint numbers are not more than three, the
shortest length is more than **0 m.
FCR type and FCRF type using thermal bonding
lap. 5.
Film marks:
-Every single volume label marked: batch number, specification, net
weight;Every single plate or roll labeling: specification.
-Package should have obvious and firm mark;
-The format of the packing cases is confirmed by purchase order
related terms.
Serial Number
|
Type
|
CR
|
FCR
|
FCRF
|
1
|
Corona resistance life (h)
1 KV voltage, frequency *0 KHz
temperature *0℃
±2℃
pulse rise time **0 ns
|
≥*0
|
|