高电压技术2012，Vol.38Issue(9)：2410-2416,7.
低密度聚乙烯/纳米蒙脱土复合材料的水树枝生长特性
Properties of Water Tree Growing in Low Density Polyethylene/Montmorillonite Nano-composite
摘要
Abstract
Low density polyethylene (LDPE) is a major type of insulation material in power cables. The water tree growing property of polyethylene is closely related to insulation breakdown in high voltage polyethylene cables. We presented a type of LDPE/montmorillonite (MMT) nano-composite prepared by a melting intercalation process. A testing setup and specimens of water trees growth in the nano-composite were designed and made. The lengths of the water trees in these specimens were observed, and the trigger rates of the water trees were counted in the water tree aging experiments. Moreover, the influence of water absorption of the LDPE/MMT nano-composite on property of water tree growing was analyzed, and the mechanism of water trees in the LDPE/MMT nano-eomposite restrained by MMT nano-particles was illustrated through analysis of crystallization behavior of the nano-composite. The experiments and analysis results show that MMT nano-partieles of which the mass fractions are 3 % can increase the crystallinity degrees and decrease the grain sizes of LDPE. Therefore, they help to decrease the water absorption, the postpone inception and the growth of water trees.关键词
低密度聚乙烯（LDPE）/蒙脱土（MMT）/纳米复合材料/水树枝/吸水率/生长特性/结晶状态Key words
low-density polyethylene ( LDPE }/montmorillonite ( MMT ) ~ nano-composite~ water tree/water absorption/growing properties crystallinity state分类
信息技术与安全科学引用本文复制引用
李剑,俸波,章华中,杨丽君,黄正勇..低密度聚乙烯/纳米蒙脱土复合材料的水树枝生长特性[J].高电压技术,2012,38(9):2410-2416,7.基金项目
国家自然科学基金 （）
