摘要
聚丙烯(polypropylene,PP)是一种极具应用潜力的热塑性高压直流电缆绝缘材料,有望取代传统的交联聚乙烯(cross-linked polyethylene,XLPE)绝缘。目前,面向高压直流电缆绝缘应用的聚丙烯改性技术主要包括共聚/共混、纳米掺杂改性、接枝改性等。为对上述改性技术路线的性能水平进行综合评估,分别选择并制备共聚聚丙烯、纳米掺杂改性聚丙烯和接枝改性聚丙烯。对其热、机械、电气绝缘性能进行了测试,并与XLPE进行对比。测试与对比结果表明,相比传统XLPE材料,上述改性聚丙烯材料均具有较高的热稳定性与较为接近的机械性能,直流下的电气绝缘性能则得到显著提升。这其中以接枝改性聚丙烯表现最为优秀。PP的接枝改性技术显示出优秀的综合性能,并且适用于大规模工业化自主化生产,具有较高的应用潜力和发展价值。
As a promising thermoplastic insulating material for HVDC cables, polypropylene(PP) is expected to replace the conventional cross-linked polyethylene(XLPE) insulation.The PP-based modification technology for HVDC cable insulation includes copolymerization/blending, nanocomposites,and grafting modification. To make a comprehensive evaluation of the modification technical routes above,copolymerized PP, PP-based nanocomposites, and graftingmodified PP were chosen and prepared, respectively. The thermal, mechanical, and DC dielectric properties were tested and compared with XLPE. The results indicated that compared with conventional XLPE, the PP-based modified materials showed superior thermo-stability and similar mechanical properties. Whereas the dielectric properties under DC condition were significantly enhanced. Among them graftingmodified PP performed the best. PP-based grafting modification is of excellent comprehensive performances and applicable in large-scale industrial production, therefore showing excellent application potential and development value.
作者
胡世勋
张雅茹
邵清
李娟
王伟
胡军
李琦
袁浩
何金良
HU Shixun;ZHANG Yaru;SHAO Qing;LI Juan;WANG Wei;HU Jun;LI Qi;YUAN Hao;HE Jinliang(Department of Electrical and Electronic Engineering,North China Electric Power University,Changping District,Beijing 102206,China;SINOPEC Beijing Research Institute of Chemical Industry,Chaoyang District,Beijing 100013,China;State Key Laboratory of Control and Simulation of Power System and Generation Equipment(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第4期1243-1251,共9页
Proceedings of the CSEE
基金
国家重点研发计划项目(2018YFE0200101)
国家自然科学基金创新研究群体项目(51921005)。
