【摘要】 针对轨道交通领域应用的需求,分别对自制A766芳纶绝缘纸及国内外同类型芳纶绝缘纸进行性能对比研究。结果表明:A766芳纶绝缘纸与进口芳纶绝缘纸的成分与结构基本一致;A766芳纶绝缘纸的温度指数TI为223℃,氧指数为30.2%,烟密度为1.4,烟毒性为0.875,满足防火等级R22项HL2级和R23项HL2级标准;A766芳纶绝缘纸浸水耐压保持率更高,0.05 mm芳纶绝缘纸保持率可达83.5%,0.13 mm芳纶绝缘纸保持率为73.8%;肖恩试验结果显示,A766芳纶绝缘纸的抗铜铝导体热氧老化性能与进口芳纶绝缘纸表现基本一致。因此,A766芳纶绝缘纸满足轨道交通领域应用要求。更多还原

【Abstract】 Aiming at the application requirements of rail transit, we studied and compared the performance of A766 aramid insulation paper and the same types of aramid insulation paper at home and abroad. The results show that the composition and structure of A766 aramid insulation paper and the imported aramid insulation paper are basically the same. The temperature index of A766 aramid insulation paper is 223℃, the oxygen index is 30.2%,the smoke density is 1.4, and the smoke toxicity is 0.875, which meets the HL2 and HL2 of R22 and R23 fire rating standards. A766 aramid insulation paper has higher voltage withstand retention rate after immersion in water, the retention rate of 0.05 mm aramid insulation paper is 83.5%, and the retention rate of 0.13 mm aramid insulation paper is 73.8%. The Shawn’s experiment shows that the thermal oxygen ageing property resistance to copper/aluminum metal conductor of A766 aramid insulation paper is the same as that of the imported aramid insulation paper. Therefore, A766 aramid insulation paper can meet the application requirements of rail transit.更多还原