金属氧化物对单组分缩合型室温硫化氟硅橡胶耐热空气老化性能的影响

Influence of Metallic Oxides on Hot Air Aging Property of Onepack RTV Fluorosilicone Rubber

研究了金属氧化物（二氧化锡、三氧化二铁和铁锡氧化物复合物）对单组分缩合型室温硫化氟硅橡胶（ＦＲ１）耐热空气老化性能的影响。结果表明，二氧化锡、三氧化二铁和铁锡氧化物复合物能提高ＦＲ１的耐热空气老化性能，使ＦＲ１的初始分解温度分别提高１５，１５和３０℃，并使ＦＲ１的热重曲线向高温方向偏移；二氧化锡和三氧化二铁在耐热空气老化方面有协同作用。

The influence of metallic oxides,such as ferric oxide,stannic oxide and their complexes on the hot air aging property of onepack RTV fluorosilicone rubber(FR1) was studied.The results showed that the hot air aging property of FR1 improved,the curve of FR1 in TGTDA shifted towards the high temperature region,the initial decomposition temperature of FR1 compounds raised by 15,15 and 30 ℃ respectively by using stannic oxide,ferric oxide or their complex;the blend of stannic oxide and ferric oxide possessed a synergistic effect and their complex had the best effect.