| PVC insulating compound
1、Type and application
|
Product |
Application and Cable Specification |
|
70ºC PVC insulating compound |
Used for instrument and communication cables which working voltage less than 0.6/1kv,according with PVC/C standard of GB5023 |
|
70ºC Flexible PVC insulating compound |
Used for flexible cables which working voltage less than 450/750v,according with PVC/D standing of GB5023 |
|
90ºC PVC insulating compound |
Used for heat resistant wires and cables which working voltage less than 450/750V,according with PVC/E standing of GB5023 |
II、PVC insulating compound for wire and cables, based on PVC resin, is made into granula by mixing, plastification and granulation with adding plasticizer, stabilizing agent, pigment and etc.
III、Processing
It is recommended that compound should be processed with common extruder having L/D ratio of 20
The following temperature（ºC）profile of extruder is recommended:
Zone |
Zone 1 |
Zone 2 |
Zone 3 |
Zone 4 |
Head |
Die |
|
Temperature ºC |
140 |
160 |
170 |
175 |
180 |
175 |
IV、Storage and transport
Packaging:25kg/bag, PE membrane inside bag and Kraft outside bag.
Storage and transport: Avoiding in direct sunlight and weathering. The storage place should be in clean、cool、dry、and ventilated conditions.
V、Properties
Table
Item |
Unit |
Standard Value |
|
70ºC PVC insulating compound |
70ºC Flexible PVC insulating compound |
90ºC PVC insulating compound |
|
Tensile Strength |
≥MPa |
15.0 |
15.0 |
16.0 |
|
Elongation at Break |
≥ % |
150 |
180 |
150 |
|
Impact Brittleness Temperature |
ºC |
-15 |
-20 |
-15 |
|
Volume Resistivity, at 20ºC |
≥Ω.m |
1.0*1012 |
1.0*1011 |
1.0*1.012 |
|
Volume Resistance at working temperature |
Temperature |
ºC |
70±1 |
70±1 |
95±1 |
|
Volume Resistance |
≥Ω.m |
1.0*109 |
1.0*108 |
5.0*108 |
|
Dielectric Strength |
≥MV/m |
20 |
20 |
20 |
|
Hot Deformation |
≤ % |
40 |
50 |
30 |
|
Thermal Stability Time at 200ºC |
≥min |
60 |
60 |
180 |
Thermal Stability Time
Aging Temperature
Aging Time
Tensile Strength after aging
Variation on Tensile Strength
Elongation at Break after aging
Variation on Elongation at Break
Loss of Mass
|
ºC
h
≥MPa
%
≥%
%
≤g/m² |
100±2
168
15.0
±20
150
±20
20 |
100±2
168
15.0
±20
180
±20
20 |
135±2
240
16.0
±20
150
±20
— |
115±2
240
—
—
—
—
20 |
|
Dielectric Loss Factor |
≥ |
— |
— |
— |
— | |
Product description 
