Special PE material for electric cable insulation sheath
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Description
Special PE material for electric cable insulation sheath
Introduction of Electric cable sheath
Black LDPE granules for cable jacketing compound cable sheath masterbatch
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| Specification of flame-redardant PE for Electric Cable | ||||||
| Property | Unit | Specification | Inspection | |||
| HFR-70 1 | HFR-70 2 | JFR-70 1 | JFR-70 2 | |||
| tensile strength | Mpa | 20.2 | 15 | 19.8 | 18.4 | GB1040 |
| Elongation at break | % | 320 | 340 | 290 | 300 | GB1040 |
| Thermal agining 100°C 168h | -- | -- | -- | -- | -- | -- |
| tensile strength at aging | Mpa | 19 | 14 | 19.9 | 17.8 | GB1040 |
| Maximum change rate of Tensile Strength | % | -5.9 | -5.7 | -4 | -3.3 | -- |
| Elongation ate Break after aging | % | 280 | 320 | 280 | 290 | GB1040 |
| Maximum change rate of Elongation at break | % | -12.5 | -5.9 | -3.4 | -3.3 | -- |
| Weight Loss after Thermal aging | g/cm3 | 13.6 | 16.3 | 11.4 | 126 | -- |
| Thermal deformation | % | 44 | 55 | 36 | 41 | -- |
| Brittle point of Low temperature impact | °C | (-)20pass | (-)30pass | (-)15pass | (-)20pass | GB5470 |
| Thermal stable time at 20°C | min | 75 | 80 | 80 | 80 | -- |
| Volume resistivity at 20°C | Ω.m | 1.1*1011 | 1.1*109 | 3.0*1012 | 2.2*1011 | GB1410 |
| Volume resistivity at working time of 70°C | Ω.m | -- | -- | 2.7*109 | 1.2*109 | GB1410 |
| Dielectronic strength | mv/m | 24 | 25 | 26 | 27 | GB1408 |
| Oxygen index | g/cm3 | 31 | 31 | 31 | 31 | G |
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Special PE material for electric cable insulation sheath
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