RTV硅橡胶纳米复合材料的跟踪和耐冲蚀性能研究

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI:10.1109/CEIDP.2008.4772806

B. Venkatesulu, M. Thomas

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引用次数: 21

摘要

室外用聚合物绝缘子的问题之一是对雨棚的跟踪和侵蚀，这直接影响到电力系统的可靠性。在基材中加入阻燃剂，增强基材的追踪性和抗侵蚀性。氢氧化物填料被认为是最好的阻燃剂。本文研究了纳米级二氢氧化镁(MDH)和微米级三水合氧化铝(ATH)作为阻燃剂在RTV硅橡胶中的应用。采用斜面跟踪和耐侵蚀(IPT)测试仪对MDH和ATH硅橡胶复合材料进行了跟踪和耐侵蚀性能研究。MDH填充(5% wt)复合材料在侵蚀质量、侵蚀深度、侵蚀宽度和侵蚀长度方面都优于ATH复合材料。MDH复合材料的侵蚀质量是ATH复合材料的49.8%，这可归因于MDH纳米填料的高表面积和较高的热稳定性。

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Studies on the Tracking and Erosion Resistance of RTV Silicone Rubber Nanocomposite

One of the problems associated with outdoor polymeric insulators is tracking and erosion of the weathershed which can directly influence the reliability of the power system. Flame retardants are added to the base material to enhance its tracking and erosion resistance. Hydroxide fillers are regarded as the best flame retardants. This paper deals with studies related to nano - sized magnesium dihydroxide (MDH) and micron-sized Alumina Trihydrate (ATH) fillers as flame retardants in RTV silicone rubber. Tracking and erosion resistance studies were carried out on MDH and ATH silicone rubber composites using an inclined plane tracking and erosion (IPT) resistance tester. The MDH filled (5% by wt) composites performed much better than ATH composites in terms of eroded mass, depth of erosion, width and length of erosion. The eroded mass of MDH composite is 49.8 % that of ATH composite which can be attributed to high surface area and higher thermal stability of MDH nanofillers.

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来源期刊

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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