Special Purpose for Ultra High Voltage Cable
Product Name, Model Type and Usage
| Product Model |
Product Name |
Characteristics And Uses |
|---|---|---|
|
SH8503 |
110KV Special Purpose: Super Semiconductive PVC Sheath |
Easy to process, good adhesion with PVC-based insulating layer, 110 KV outer protective conductive thickness (0.3 mm-0.5 mm), instead of graphite coating. |
|
SH8503-ZH |
110KV Special: Flame Retardant Semiconductive PVC Sheath |
Product introduction
This product is a conductive plastic made from polyvinyl chloride as resin, superconductive carbon black added, modified by toughening technology, mixed, plasticized and granulated by special manufacturing process. The physical properties and technological extrusion characteristics of this product refer to the standard of PVC sheath. Especially the thin-walled double-layer co-extrusion surface is smooth and round, and it can not bond closely with the PVC-based insulation layer without interfacial reaction, which is conducive to maintaining long-term stability and reliability of electrical properties, and is an ideal substitute for graphite.
Product characteristics
·Excellent conductivity ·Excellent flame retardancy
·Excellent mechanical properties ·Excellent adhesion to insulating layer
·Excellent processability ·Excellent aging resistance
Processing Guidelines
Thin-walled double-layer co-extrusion (conductive plastic single screw extrusion), it is recommended to place a filter screen 60 yards a layer. The drying temperature is about 80 C and the drying time is 1 - 2 hours.
Recommended processing temperature:
| position | 1area | 2area | 3area | 4area | 5area | machine power | die head（1） | die head（2） |
|---|---|---|---|---|---|---|---|---|
| temperature（℃） | 145 | 150 | 160 | 160 | 165 | 170 | 170 | 170 |
The melt temperature is controlled between 150 and 170 C.
Storage and Packaging
It should be stored in a dry and ventilated warehouse. The products are packed in 25kg paper-plastic composite bags or 500kg container bags. They can also be packed according to user's requirements.
Technical characteristics
| physical property |
unit |
standard value |
SH8503 typical value |
standard value |
SH8503-ZH typical value |
test method |
|---|---|---|---|---|---|---|
|
density |
g/cm3 |
≤1.3 |
1.23 |
≤1.4 |
1.35 |
GB/T 1033.1 |
|
thermal deformation |
% |
≤50 |
30 |
≤50 |
27.8 |
GB/T 8815 |
|
low temperature impact embrittlement temperature |
℃ |
-15 |
pass |
-15 |
pass |
GB/T 5470 |
|
200℃thermal stabilization time |
min |
≥80 |
pass |
≥80 |
pass |
GB/T 8815 |
|
|
|
|
|
|
|
|
|
mechanical properties |
unit |
standard value |
SH8503 typical value |
standard value |
SH8503-ZH typical value |
test method |
|
tensile strength |
MPa |
≥12 |
17 |
≥12 |
15.7 |
GB/T 1040.3 |
|
elongation at break |
% |
≥150 |
190 |
≥150 |
187 |
GB/T 1040.3 |
|
|
|
|
|
|
|
|
|
aging test |
unit |
standard value |
SH8503 typical value |
standard value |
SH8503-ZH typical value |
test method |
|
thermal aging100℃×168h |
|
|
|
|
|
GB/T 2951.12 |
|
tensile strength change rate |
% |
±20 |
7 |
±20 |
5 |
GB/T 2951.12 |
|
fracture tensile change rate |
% |
±20 |
-9 |
±20 |
11 |
GB/T 2951.12 |
|
thermal weightlessness |
g/m2 |
≤23 |
pass |
≤23 |
pass |
GB/T 1033.1 |
|
|
|
|
|
|
|
|
|
electrical performance |
unit |
standard value |
SH8503 typical value |
standard value |
SH8503-ZH typical value |
test method |
|
23℃ volumetric resistivity |
Ω·cm |
≤50 |
30 |
≤50 |
35 |
GB/T 1410 |
|
|
|
|
|
|
|
|
|
flame retardant property |
unit |
standard value |
SH8503 typical value |
standard value |
SH8503-ZH typical value |
test method |
|
oxygen index |
% |
- |
- |
≥30 |
30.8 |
GB/T 2406 |
