PE-based Superconducting PE Sheath
Product Name, Model Type and Usage
| Product Model |
Product Name |
Characteristics And Uses |
|---|---|---|
|
SH8502 |
PE-based superconducting PE sheath |
Easy to process, good adhesion with PE-based insulating layer, 110 KV above, electrical thickness (about 0.3 mm), instead of graphite coating. |
|
SH8502-ZH |
PE-based Semiconductive Flame Retardant Polyolefin Sheath |
Product introduction
SH8502 is a mixed conductive plastic made from polyolefin resin, superconducting carbon black, toughening modification technology and special process. The physical properties and technological extrusion properties of the product refer to PE sheath standard. Especially, the surface of thin-walled double-layer co-extrusion is smooth and round. Tightly bonded with PE-based insulating layer, no interfacial reaction occurs. It is beneficial to the long-term stability and reliability of electrical properties and is an ideal substitute for graphite.
Product characteristics
·Excellent conductivity ·Excellent Cracking Resistance
·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, long-term use is recommended to dry, drying temperature 75-80 C, time 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 | 165 | 168-170 | 168-170 |
The melt temperature is controlled between 155 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 |
SH8502 typical value |
standard value |
SH8502-ZH typical value |
test method |
|---|---|---|---|---|---|---|
|
density |
g/cm3 |
≤1.15 |
1.06 |
≤1.3 |
1.2 |
GB/T 1033.1 |
|
low temperature impact embrittlement temperature |
℃ |
-50 |
pass |
-35 |
pass |
GB/T 5470 |
|
thermal deformation90℃×4h |
% |
- |
- |
- |
- |
- |
|
|
|
|
|
|
|
|
| mechanical properties |
unit |
standard value |
SH8502 typical value |
standard value |
SH8502-ZH typical value |
test method |
|
tensile strength |
MPa |
≥12 |
15 |
≥12 |
14 |
GB/T 1040.3 |
|
elongation at break |
% |
≥450 |
516 |
≥400 |
498 |
GB/T 1040.3 |
|
|
|
|
|
|
|
|
|
aging test |
unit |
standard value |
SH8502 typical value |
standard value |
SH8502-ZH typical value |
test method |
|
thermal aging100℃×168h |
|
|
|
|
|
GB/T 2951.12 |
|
tensile strength change rate |
% |
±25 |
7 |
±25 |
5 |
GB/T 2951.12 |
|
fracture elongation change rate |
% |
±25 |
-9 |
±25 |
-8 |
GB/T 2951.12 |
|
|
|
|
|
|
|
|
|
electrical performance |
unit |
standard value |
SH8502 typical value |
standard value |
SH8502-ZH typical value |
test method |
|
20℃ volumetric resistivity |
Ω·cm |
≤100 |
25 |
≤100 |
38 |
GB/T 1410 |
|
dielectric strength |
KV/mm |
- |
- |
- |
- |
GB/T 1408.1 |
|
|
|
|
|
|
|
|
|
flame retardant property |
unit |
standard value |
SH8502 typical value |
standard value |
SH8502-ZH typical value |
test method |
|
oxygen index |
% |
- |
- |
≥27 |
28.5 |
GB/T 2406 |
|
|
|
|
|
|
|
|
|
resistance to environmental stress cracking |
h |
≥500 |
pass |
≥500 |
pass |
GB/T 2951.41 |
