Semi-conductive Water Blocking Tape
Product Characteristics：
Good hygroscopicity, large expansion, quick expansion speed;
Small resistance, semi-conductive which could weaken strength of electric field ;
High mechanical strength which would be good at cable lapping and longitudinal?wrapping;
Good heat resistance, good moment heat resistance..
Product Usages：
It’s mostly suitable for water-proof electric cable of medium, high and super high voltage, others of shield requirements for communication, control & signature and instrument cables for semi-conductive water blocking. It could play a part of water blocking, buffer and shield. And it has no causticity.
Technical Indicator：
Properties |
Unit |
Semi-conductive?Water?Blocking?Tape |
|||
Thickness |
mm |
0.30±0.03 |
0.40±0.03 |
0.50±0.03 |
0.60±0.03 |
Unit?weight |
g/㎡ |
120±10 |
150±10 |
170±10 |
190±20 |
Tensile?strength |
N/cm |
≥30 |
≥40 |
≥50 |
≥60 |
Elongation |
％ |
≥12 |
≥12 |
≥12 |
≥12 |
Expansion?speed |
mm/1st?min |
≥8 |
≥10 |
≥10 |
≥8 |
Expansion?height |
mm/3min |
≥12 |
≥15 |
≥16 |
≥12 |
Surface?resistance |
Ω |
＜1500 |
＜1500 |
＜1500 |
＜1500 |
Volume?resistance |
Ω.cm |
＜1×106 |
＜1×106 |
＜1×106 |
＜1×106 |
Moment?stability |
℃ |
230 |
230 |
230 |
230 |
Long?time?stability |
℃ |
90 |
90 |
90 |
90 |
Moisture?content |
％ |
＜9 |
＜9 |
＜9 |
＜9 |
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location：