Flame Retardant Low Smoke Halogen-Free Material
Product Name, Model Type and Usage
| product model |
product name |
characteristics and uses |
|---|---|---|
|
SHWL-8501 |
flame retardant low smoke halogen-free material |
excellent anti-cracking, good processing performance; used for special sheath material for power cable, safety and environmental protection. |
Product introduction
SHWL-8501 is a flame-retardant cable material based on polyethylene, which is processed by adding halogen-free flame retardant and other processing aids. It has good self-extinguishing property, good flame retardant effect and excellent cracking resistance. It is suitable for the sheath of halogen-free low smoke cables in special occasions of power cables. It is also suitable for insulation and weatherability of power cables.
SHWL-8501 meets the requirements of ROHS and REACH, and is a green and environmental resistant fuel.
product characteristics
·excellent mechanical properties ·excellent weather resistance and insulation
·excellent environmental stress cracking resistance ·excellent processability
·excellent flame retardancy
processing guidelines
It can be applied to ordinary PE screw extrusion with a length-diameter ratio of 25:1 to obtain the best extrusion effect. The drawing ratio of the die should not be too large during extrusion. The warm water-cold water cooling is adopted to minimize the internal stress of the sheath.
| position | 1area | 2area | 3area | 4area | 5area | 6area | 7area | nose | die port |
|---|---|---|---|---|---|---|---|---|---|
| temperature（℃） | 130 | 140 | 145 | 150 | 155 | 160 | 160 | 165 | 165-170 |
The melt temperature is controlled between 155 and 170 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（termite control：FYSHWL-8501）
| physical property |
unit |
standard value |
SHWL-8501 typical value |
test method |
|---|---|---|---|---|
|
density |
g/m3 |
≤1.35 |
1.25 |
GB/T 1033.1 |
|
low temperature impact embrittlement temperature |
℃ |
-35 |
pass |
GB/T 5470 |
|
thermal deformation 90℃×4h |
% |
≤50 |
pass |
GB/T 8815 |
|
resistance to environmental stress cracking |
h |
≥500 |
pass |
GB/T 2951.41 |
|
|
|
|
|
|
|
mechanical properties |
unit |
standard value |
SHWL-8501 typical value |
test method |
|
tensile strength |
MPa |
≥12.5 |
13 |
GB/T 1040.3 |
|
elongation at break |
% |
≥400 |
495 |
GB/T 1040.3 |
|
|
|
|
|
|
|
aging test |
unit |
standard value |
SHWL-8501 typical value |
test method |
|
thermal aging 100℃×240h |
|
|
|
GB/T 2951.12 |
|
tensile strength change rate |
% |
±25 |
-10 |
GB/T 2951.12 |
|
fracture elongation change rate |
% |
±25 |
+2 |
GB/T 2951.12 |
|
|
|
|
|
|
|
electrical properties |
unit |
standard value |
SHWL-8501 typical value |
test method |
|
20℃ time volume resistivity |
Ω·m |
5×1012 |
8.7×1012 |
GB/T 1410 |
|
dielectric strength |
KV/mm |
≥18 |
28.5 |
GB/T 1408.1 |
|
|
|
|
|
|
|
flame retardant property |
unit |
standard value |
SHWL-8501 typical value |
test method |
|
oxygen index |
% |
≥27 |
29 |
GB/T 2406 |
|
|
|
|
|
|
|
melting index |
g/10min |
≤1.0 |
0.8 |
GB/T 3682 |
|
|
|
|
|
|
|
termite control (colony method) |
erosion grade |
＜level |
pass |
|
Note: The data of typical values in the table can not be regarded as the standard of specification restriction or the design basis cited separately.
