1,used for insulation material of aerial cable
2,control cable
3,1kv and below and similar situation
4,highest temperature 70
SPECIFICATION OF HDPE FOR CABLE INSULATION
PROPERTY UNIT SPECIFICATION TEST
Melt Flow Index g/10min ≤2.0 ASTM D1238
Density g/cm3 0.92-0.945 ASTM D1505
tensile strength Mpa ≥13.0 ASTM D638
Elongation at break % ≥500 ASTM D638
Brittle temperature at low temperature °C ≤-76 ASTM D746
ESCR ,FO H ≥96 ASTM D1693
Oxidation induction period at 200°C Min -- --
Content of Carbon black % -- --
Carbon Black dispersion -- ≥6 GB2951
Absorption coeffcient -- ≥400
Ceka softening point °C -- ASTM D1525
Dielectric strength Mv/m ≥25 ASTM D149
Volume resistivity Ω.m ≥1*1014 ASTM D257
Dielectric Constant -- -- ASTM D1505