硅橡胶表面老化、改性与修复的研究

主要探讨了硅橡胶表面产生电晕老化的原因和电晕老化的评估方法,并介绍了氢氧化铝(ATH)等无机填料对硅橡胶表面抗电晕老化改性的影响,归纳了硅橡胶表面紫外老化发生的机理以及相应的紫外老化评估手段。另外,讨论了二氧化钛、二氧化铈等光屏蔽剂以及紫外线吸收剂对硅橡胶表面耐紫外辐照老化性能的作用,总结了硅橡胶表面出现热老化的原因、相应的热老化评估方法以及当前国内外改善硅橡胶表面耐热老化性能常用的方法。论述了硅橡胶老化表面修复的最新研究进展。最后,提出了目前国内外学者在硅橡胶表面老化研究方面存在的一些问题,并对未来的发展方向进行了展望。

Research on Aging, Modification and Repair of Silicone Rubber Surface

This paper mainly discusses the causes of corona aging on the surface of silicone rubber and the corresponding evaluation methods of corona aging, and introduces the influence of inorganic fillers such as aluminum hydroxide (ATH) on the modification of anti corona aging of silicone rubber surface; The mechanism of UV aging on the surface of silicone rubber and the corresponding evaluation methods of UV aging are summarized. In addition, the effects of light-shielding agents such as titanium dioxide, cerium dioxide and ultraviolet absorbers on the UV radiation aging resistance of silicone rubber surface are discussed; the reasons for thermal aging on the surface of silicone rubber, the corresponding evaluation methods of thermal aging and the common methods to improve the surface heat aging performance of silicone rubber are summarized. The latest research progress of aging surface repair of silicone rubber is discussed. Finally, some problems existing in the research of aging of silicone rubber surface by domestic and foreign scholars are put forward, and the future development direction is prospected.