中国塑料 ›› 2010, Vol. 24 ›› Issue (06): 55-57 .DOI: 10.19491/j.issn.1001-9278.2010.06.011

• 加工与应用 • 上一篇    下一篇

热老化对YJV电缆绝缘护套塑料燃烧性能的影响

舒中俊   

  1. 中国人民武装警察部队学院消防工程系
  • 收稿日期:2010-02-20 修回日期:1900-01-01 出版日期:2010-06-26 发布日期:2010-06-26

Effect of Thermal Aging on Fire Performance of YJV Cables

  • Received:2010-02-20 Revised:1900-01-01 Online:2010-06-26 Published:2010-06-26

摘要: 采用热老化实验箱、锥形量热计和热重分析仪研究了热老化对YJV电缆燃烧性能的影响。结果表明,在加速热老化的前期,电缆的引燃时间逐渐延长;热释放速率的初始峰值逐渐降低;电缆绝缘护套料的引燃和火焰蔓延危险降低;主要原是热老化前期电缆护套料中易分解挥发添加剂大量损失所致。

关键词: 电缆绝缘护套, 热老化, 燃烧性能

Abstract: The effect of thermal aging on ignition time, heat release rate of the specimens of YJV cables was studied by means of thermal aging chamber, cone calorimeter and thermogravimetric (TG). The test data indicated that the ignition time of the specimens increased and the first peak value of heat release rate decreased with ageing time in early thermal aging period. This suggest that the fire hazard of the plastics in YJV cables would be reduced considerably while subjected to the thermal aging in early period in which most of the additives in plastic of cable was heated to volatilized from cable.

Key words: cable jacket insulation compound, thermal aging, combustion performance