buffering semi-conductive water blocking tape

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Specifications

buffering semi-conductive water blocking tape
1.strong moisture absorption
2.big expansion rate
3.quick expansion velocity

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:

itemomen130omen150omen200omen250
thickness(mm)1.3±0.51.5±0.52.0±0.52.5±0.5
unit weight(g/m2)200±40240±40280±40320±40
tensile strength(N/cm)≥40≥40≥40≥40
elongation(%)≥12≥12≥12≥12
expansion velocity (mm/1st min)≥8≥8≥8≥8
expansion height(mm/3min)≥12≥12≥12≥12
surface resistance(Ω)<1500<1500<1500<1500
volume resistance(Ω.cm)<1×106<1×106<1×106<1×106
instant stability(°C)230230230230
long-term stability(°C)90909090
water 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.


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