Flame Retardant Polyolefin Sheath for Power Cable (Environmental Protection)
Product Name, Model Type and Usage
Product Model |
Product Name |
Characteristics And Uses |
SH8507/8508 |
Flame retardant polyolefin sheath |
It can be used in power cables, control cables, marine cables and optical fibers which require high cracking performance. |
Product introduction
SH8507 is a thermoplastic low smoke halogen-free flame retardant polyolefin sheath material with excellent cracking resistance. It is mainly used in power cables, control cables, signal cables, marine cables and indoor and outdoor optical fibers where special requirements are required for cracking resistance.
Product characteristics
·Excellent resistance to high and low temperature ·Excellent Cracking Resistance
·Good flame retardancy ·Excellent Extrusion Processing Performance
·Excellent Low Temperature Resistance(-40℃)
Processing Guidelines
The best extrusion effect can be obtained by using 1:1.2 low compression ratio screw and PVC/PE screw.
Recommended processing temperature:
position | 1area | 2area | 3area | 4area | 5area | nose | die port |
temperature(℃) | 125 | 140 | 150 | 160 | 165 | 165 | 160-165 |
The melt temperature should be controlled between 160 and 175 degrees C, and the maximum should not exceed 180 degrees C.
If the material is stored in humid environment for a long time, drying treatment is recommended. The drying temperature is 80 C and the drying time is 1-2 hours.
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 |
SH8507 typical value |
test method |
density |
g/cm3 |
|
1.43 |
GB/T 1033.1 |
Low temperature embrittlement temperature(-40℃)number of failures |
个 |
|
0 |
GB/T 5470 |
thermal deformation(90℃×4h) |
% |
|
6 |
GB/T 8815 |
high temperature pressure(90℃) |
% |
|
30 |
GB/T 2951.31 |
thermal shock(150℃,1h) |
|
|
no cracking |
GB/T 2951.31 |
|
|
|
|
|
mechanical properties |
unit |
|
SH8507 typical value |
test method |
tensile strength |
MPa |
|
13.5 |
GB/T 1040 |
elongation at break |
% |
|
375 |
GB/T 1040 |
thermal aging properties110℃×7days |
|
|
475 |
GB/T 2957.12 |
tensile strength change rate |
% |
|
+9 |
|
fracture elongation change rate |
% |
|
-6 |
|
|
|
|
|
|
electrical performance |
unit |
|
SH8507 typical value |
test method |
20℃ volumetric resistivity |
Ω·m |
|
8.7×1011 |
GB/T 1410 |
dielectric strength |
MV/mm |
|
28 |
GB/T 1408.1 |
|
|
|
|
|
combustion performance |
unit |
|
SH8507 typical value |
test method |
oxygen index |
% |
|
35 |
GB/T 2406 |
acid gas |
|
|
|
GB/T 17650.2 |
conductivity |
us/mm |
|
0.9 |
|
PH value |
|
|
5.2 |
|
maximum smoke density Dm |
|
|
|
ASTME662 |
smoking method |
|
|
60 |
|
Smoke-free method |
|
|
170 |
|
toxicity index |
|
|
1.1 |
NES713 |