热缩护套管具有良好的绝缘性和抗开裂性,主要用于电缆的外保护层的修补和电缆中间连接的外层保护。
Heat shrink protection cover tube has good insulation and ruptuing resistance .It suitable for mend of cable out-layer protection and outlay protection of intermediate connecting .
护管套技术指标i'vetective tube technical index
| 序号 Order No. | 内容 Content | 单位 Unit | 指标 Index |
| 1 | 硬度 Hardness degree | 邵氏Shao | ≥90 |
| 2 | 抗张强度 Tensile strength | Mpa | ≥13.0 |
| 3 | 断裂伸张率 Break extension rate | % | ≥300 |
| 4 | 热老化120℃ Heat aging 120 ℃ 168h | K1＞0.8 K2＞0.7 | |
| 5 | 吸水率 Water alsorption | % | ≤0.1 |
| 6 | 体积电阻系数 Volume resistance coefficient | Ω.cm | ≥1014 |
| 7 | 击穿强度 Disruptive strength | ≥20 | |
| 8 | 收缩温度 Shrinkage temperature | ℃ | 120-130 |
热缩半导电管适用于高压电缆中起屏蔽用。
Heat shrinkable semi-conductive tube Applied to hig-voltage cable accessory to make effect of shield .
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