有机硅绝缘密封胶热老化性能的研究

发布时间：2018-01-13 10:55

  本文关键词：有机硅绝缘密封胶热老化性能的研究　出处：《绝缘材料》2014年06期 　论文类型：期刊论文

  更多相关文章： 耐热添加剂 协同保护 热老化 电性能 电子绝缘密封胶

【摘要】：以乙烯基硅油、含氢硅油、二氧化硅为主要原料,苯基硅油和氧化铁为耐热添加剂,制备了有机硅绝缘密封胶。研究了苯基硅油用量、氧化铁用量以及两者协同效应对密封胶热稳定性的影响。结果表明:随着苯基硅油、氧化铁用量的增加,密封胶的耐老化性能明显增强;当苯基硅油用量为10份,氧化铁用量为6份时,制得的密封胶热稳定性良好,经300℃老化48 h后,其撕裂强度和粘接强度分别仅下降21.6%和6.7%,电气强度仅下降6.1%,介质损耗因数基本保持不变;在苯基硅油和氧化铁协同保护作用下,密封胶在420℃前的热分解速率很低,大幅提高了密封胶的热老化性能。
[Abstract]:Silicone insulating sealant was prepared with vinyl silicone oil, hydrogen-containing silicone oil, silica as main raw material, phenyl silicone oil and iron oxide as heat resistant additives. The amount of phenyl silicone oil was studied. The effect of iron oxide content and synergistic effect on the thermal stability of sealant. The results show that the aging resistance of sealant increases with the increase of phenyl silicon oil and the amount of iron oxide. When the amount of phenyl silicone oil is 10 phr and the amount of iron oxide is 6 phr, the sealant prepared has good thermal stability and is aged at 300 鈩，

本文编号：1418584