Thermoplastic Low Smoke Zero Halogen (LSZH) flame retardant cable material for Radiofrequency and leakage cable 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 |
|
HFFR |
RF1601 |
Thermoplastic LSZH flame retardant polyolefin sheath material for Radiofrequency cable |
sheath material for Radiofrequency cable has good Retardant properties and processing performance. Materials comply with EU RoHS directive |
|
RF1602 |
Thermoplastic LSZH flame retardant polyolefin sheath material for leakage cable |
sheath material for leakage cable has good Retardant properties and processing performance. Materials comply with EU RoHS directive |
2、Executive Standard
YD/T 1113-2001
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 /℃ |
120～130 |
130～140 |
140～150 |
150～155 |
155～160 |
155～160 |
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 items |
RF1601 |
RF1602 |
|
density/（g/cm3） |
1.20～1.50 |
|
Tensile strength/MPa ≥ |
10.0 |
10.0 |
|
Breaking elongation /% ≥ |
150 |
150 |
|
Heat aging property |
（110±2）℃×168 h |
|
Tensile strength /MPa ≥ |
9.0 |
9.0 |
|
change rate of tensile strength /% ≤ |
±20 |
±20 |
|
Breaking elongation /% ≥ |
120 |
120 |
|
change rate of Breaking elongation /% ≤ |
±20 |
±20 |
|
Resistance of Environmental Stress Cracking |
F0/h ≥ |
96 |
96 |
|
Number of failure/number of specimen/ ≥ |
0/10 |
0/10 |
|
thermal distortion（90 ℃、1kg）/% ≤ |
20 |
20 |
|
brittle temperature at low temperature |
Indoor /℃ ≤ |
-20 |
-20 |
|
outdoor/℃ ≤ |
-40 |
-40 |
|
limit oxygen index /% ≥ |
30 |
30 |
|
smoke density |
flameless ≤ |
300 |
300 |
|
Hydrogen halide content/（mg/g） ≤ |
5 |
5 |
|
pH of Combustion gas ≥ |
4 |
4 |
|
Electrical conductivity of Combustion gas /（μs/cm） ≤ |
100 |
100 |
|
volume resistivity /Ωm ≥ |
1010 |
1010 |
|
shore hardness /HA ≥ |
80 |
80 |
|
vertical burning |
FV-0 level |
FV-0 level |
|
horizontal burning |
GB 2408-80/I |
GB 2408-80/I |