Irradiation-crosslinked Low Smoke Zero Halogen (LSZH) flame retardant polyolefin cable material is a polyolefin-based pellet material which is produced by mixing, plasticizing and granulating with accessory ingredients such as special modifiers, non-toxic and non-halogen flame retardants, antioxidants and lubricants.
1、Model, name and application of products
|
Model |
grade |
name |
application |
|
WDZ-YJ-J105 |
Rad-J105 |
Irradiation-crosslinked Low Smoke Zero Halogen (LSZH) flame retardant polyolefin insulation material at 105℃ |
Electrical equipment used wire, automotive wire, electrical motor, UL standard wires and instrumentation lines；Materials comply with EU RoHS directive |
|
WDZ-YJ-J125 |
Rad-J125 |
Irradiation-crosslinked Low Smoke Zero Halogen (LSZH) flame retardant polyolefin insulation material at 125℃ |
2、Executive Standard
GB/T 32129-2015
3、products properties
The properties of products are shown in Table 1.
4、Processing
general extruder is used in processing with the aspect ratio of Low compression ratio screw L/D≥20. A low compression ratio screw is recommended in order to benefit the extrusion of highly filled halogen flame retardant cable materials. The recommended reference processing temperature is shown below：
|
sections |
Section 1 |
Section 2 |
Section 3 |
Section 4 |
Extruder head |
die |
|
temperature /℃ |
130～140 |
140～145 |
145～150 |
150～155 |
145～155 |
145～155 |
5、Packaging, transportation and storage
Packaging：Net weight per bag（25±0.2）kg. The inner bag is aluminum plastic composites and the outer bag is polypropylene woven/polyethylene/craft paper composites.
Transportation and storage：No exposure to sunshine and rain during transportation. It should be stored in clean, cool, dry and ventilated warehouse.
Table 1: Products properties sheet
|
Test item |
Rad-J105 |
Rad-J125 |
|
Tensile strength/MPa ≥ |
10.0 |
10.0 |
|
Breaking elongation /% ≥ |
150 |
150 |
|
Air oven heat aging |
（135±2）℃×168 h |
（158±2）℃×168 h |
|
change rate of Tensile strength /% ≤ |
±25 |
±25 |
|
change rate of Breaking elongation /% ≤ |
±25 |
±25 |
|
Impact brittle temperature |
Test temperature/℃ ≤ |
-25 |
-25 |
|
Impact brittle property/number of failure ≤ |
15/30 |
15/30 |
|
Thermal elongation |
Test condition |
（200±3）℃×0.2 MPa×15min |
|
elongation under load/% ≤ |
100 |
100 |
|
Permanent deformation after cooling /% ≤ |
25 |
25 |
|
volume resistivity at 20 ℃/Ω·m ≥ |
1.0×1012 |
1.0×1012 |
|
volume resistivity at working temperature |
Test temperatur/℃ |
105±2 |
125±2 |
|
volume resistivity /Ω·m ≥ |
2.0×108 |
2.0×108 |
|
dielectric strength /（MV/m） ≥ |
20 |
20 |
|
oxygen index /% ≥ |
28 |
28 |
|
smoke density |
flameless ≤ |
350 |
350 |
|
flame ≤ |
100 |
100 |
|
Acidity of combustion gas release |
Content of HCL and HBr/% ≤ |
0.5 |
0.5 |
|
HF content /% ≤ |
0.1 |
0.1 |
|
pH ≥ |
4.3 |
4.3 |
|
electrical conductivity /（μs/mm ） ≤ |
10 |
10 |
|
toxic hazards of material-produced tobacco |
Negotiating by supply and demand sides according to product applications demand. |