Hao Yuan, Shixun Hu, Yao Zhou, 等. Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(1):361-370.
Hao Yuan, Shixun Hu, Yao Zhou, et al. Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables[J]. CSEE Journal of Power and Energy Systems, 2024, 10(1): 361-370.
Hao Yuan, Shixun Hu, Yao Zhou, 等. Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(1):361-370.DOI: 10.17775/CSEEJPES.2021.00850.
Hao Yuan, Shixun Hu, Yao Zhou, et al. Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables[J]. CSEE Journal of Power and Energy Systems, 2024, 10(1): 361-370.DOI: 10.17775/CSEEJPES.2021.00850.
Enhanced Electrical Properties of Styrene-grafted Polypropylene Insulation for Bulk Power Transmission HVDC Cables
摘要
Abstract
Polypropylene (PP) is considered to be a rather promising material for HVDC cable insulation. Grafting modi-fication has proved to be an effective method on the electrical property improvements of PP. This paper reports on the highly-enhanced electrical properties of styrene-grafted polypropylene (PP-g-St) and their related mechanism. The influence of grafting styrene on crystallization structures
thermal properties and electrical properties of PP-g-St are characterized and analyzed. These results show that PP-g-St exhibits remarkably enhanced DC volume resistivity
suppressed space charge accumulation and improved DC breakdown strengths as compared to PP. Crystallization observation shows PP-g-St has small
imperfect spherulites with indistinct boundaries
which is strongly correlated to enhanced electrical properties. This study provides an effective grafting strategy to design high-performance HVDC cable insulation materials for bulk power transmission systems.