塑料科技2024，Vol.52Issue(12)：26-30,5.DOI:10.15925/j.cnki.issn1005-3360.2024.12.005
SiO2粒子掺杂对超净高压交联聚乙烯绝缘材料的结晶行为及击穿性能的影响
Effect of SiO2 Particle Adulteration on Crystallization Behavior and Breakdown Property of Ultra-clean high Voltage Cross-linked Polyethylene Insulation Materials
摘要
Abstract
The SiO2 particles were chosen as nano-additives,and ultra-clean crosslinked polyethylene(XLPE)was used as matrix.Three kinds of SiO2/XLPE composites were prepared with doping ratios of 1%,2%and 3%by mass fraction.The crystallization behavior of the materials was analyzed,including the degree of crystallinity,the initial slope of the crystallization peak,the temperature difference of the crystallization peak,and the half-peak width.The microcrystalline size of the materials under X-ray diffraction testing was studied,and the changes in the breakdown property of the materials after the addition of SiO2 particles were investigated.The results show that the addition of particles can act as heterogeneous nucleation within the ultra-clean XLPE matrix material,homogenizing the grain size distribution,but this effect diminishes with increasing particle addition.With the addition of 1%mass fraction of SiO2 particles,the microcrystalline size of the(110)and(200)crystal planes of the material both increase to over 11%,with good grain growth,forming a stable crystalline-amorphous interface,which restricts electron migration,and the breakdown property of the material increases by 39.8%.When the doping mass fraction of SiO2 particles is increased to 2%and 3%,the crystallization behavior of the material is restricted due to aggregation effects,resulting in a decrease in crystallinity of approximately 6%and 13%,respectively,which leads to the formation of interfacial weak zones within the matrix and an increase in free volume and the average free path of electrons,decreasing the breakdown property of the material by 6.5%and 14.3%,respectively.关键词
粒子掺杂/超净高压绝缘/结晶行为/击穿性能Key words
Particle adulteration/Ultra-clean high voltage insulation/Crystallization behavior/Breakdown property分类
通用工业技术引用本文复制引用
姜洪涛,聂立军,刘玉峰,钟昌彬,袁鸿..SiO2粒子掺杂对超净高压交联聚乙烯绝缘材料的结晶行为及击穿性能的影响[J].塑料科技,2024,52(12):26-30,5.基金项目
广州市博士后科研资助项目(202306129) （202306129）
南沙区博士后科研资助项目(ZJ440115240521000021) （ZJ440115240521000021）
