WM-1902 90 Centigrade High Flame Retardancy Low-smoke halogen-free Jacketing for Power Cable
Experiment item
|
Unit
|
Standard value
|
Typical value
|
Test method
|
1. Density
|
g/cm3
|
≤ 1.52
|
1.50
|
GB/T 1033
|
2. Tensile strength
|
MPa
|
≥10.0
|
11.7
|
GB/T 1040
|
3. Elongation at break
|
%
|
≥150
|
190
|
GB/T 1040
|
4. Aging 110 ± 2℃×168h
|
||||
Change of tensile properties
|
%
|
Max±30
|
+6
|
GB/T 2951
|
Change of elongation properties
|
%
|
Max±30
|
-9
|
GB/T 2951
|
5. Thermal deformation(90℃ × 4h)
|
%
|
≤25
|
7
|
GB/T 8815
|
6. Brittleness temperature
|
℃
|
-25℃PASS
|
-40℃PASS
|
GB/T 5470
|
7. 20℃ DC volume resistivity
|
Ω•m
|
≥1×10^12
|
5.2×10^12
|
GB/T 1410
|
8. Electric strength
|
MV/m
|
≥20
|
26
|
GB/T 1408
|
9. Oxygen index
|
%
|
≥33
|
36
|
GB/T 2406
|
10.Smoke density non-luminous flame
|
—
|
≤250
|
171
|
GB/T8323
|
Flame combustion
|
—
|
≤100
|
50
|
GB/T8323
|
11. Halogen acid gas content
|
mg/g
|
≤5
|
0
|
GB/T 17650
|
12. pH value
|
—
|
≥4.3
|
5.3
|
GB/T 17650
|
conductivity
|
μs/mm
|
≤10
|
1.2
|
GB/T 17650
|
13.Thermal shock(150℃ × 1h)
|
—
|
PASS
|
PASS
|
GB/T 2951
|