The airproof meterial of cable pipe should possess little ratio of gas leakage, low quantity of heat, high liquidity, moderate strength, advantaged construction performance and insulation performance.

• 电缆管道密封材料不仅要求气体漏率小,还应具有放热量低、好的流动性、度适中、工性能便利以及绝缘性等特性。