buffering semi-conductive water blocking tape

Buffering semi-conductive water blocking tape is used for water-proof layer inside the metal sheath of high or extra high voltage cable. Specification and technical parameter is as follows: itemomen130omen150omen200omen250thickness(mm)1.3±0.51.5±0.52.0±0.52.5±0.5unit weight(g/m2)200±40240±40280±40320±40tensile strength(N/cm)≥40≥40≥40≥40elongation(%)≥12≥12≥12≥12expansion velocity (mm/1st min)≥8≥8≥8≥8expansion height(mm/3min)≥12≥12≥12≥12surface resistance(Ω)<1500<1500<1500<1500volume resistance(Ω.cm)<1×106<1×106<1×106<1×106instant stability(°C)230230230230long-term stability(°C)90909090water percentage(%)<9<9<9<9 Feature: 1,it has characteristic of strong moisture absorption,big expansion rate and quick expansion velocity. 2,small resistance can make cable has semi-conductivity and weaken the electrical field strength effectively. 3,high mechanical strength makes it easy to be wrapped and longitudinal wrapped for kinds of cables. 4,it is heat-resistant and can bear high instant temperature.cable with this product can keep stable performance at instant high temperature. Storage: it should be stored in dry house,kept away from source of fire and not to be exposed to the sunshine.the shelf life is 6 months after the manufacturing date.also it should avoid moisture and mechanical damage during storage and transportation.