Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation
Abstract To suppress the resistivity positive temperature coefficient (PTC) effect of ethylene‐butyl acrylate copolymer (EBA)‐based semi‐conductive shielding layer and the injection of charge carriers to insulation layer, the polar molecule maleic anhydride (MAH) is grafted onto EBA macromolecules b...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-04-01
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| Series: | High Voltage |
| Online Access: | https://doi.org/10.1049/hve2.12504 |
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| author | Chengcheng Zhang Sen Wang Hong Zhao Minghua Chen Xuan Wang Xiaohong Chi |
| author_facet | Chengcheng Zhang Sen Wang Hong Zhao Minghua Chen Xuan Wang Xiaohong Chi |
| author_sort | Chengcheng Zhang |
| collection | DOAJ |
| description | Abstract To suppress the resistivity positive temperature coefficient (PTC) effect of ethylene‐butyl acrylate copolymer (EBA)‐based semi‐conductive shielding layer and the injection of charge carriers to insulation layer, the polar molecule maleic anhydride (MAH) is grafted onto EBA macromolecules by melt blending and thermal grafting. The resistivity temperature stability of the grafted semi‐conductive composites, as well as the space charge distribution and direct current (DC) breakdown characteristics of cross‐linked polyethylene (XLPE) insulation using the composites as the electrode is investigated. The results show that MAH grafting can significantly reduce the volume resistivity of semi‐conductive composites, especially at a higher temperature, to suppress the PTC effect. And, the grafted semi‐conductive composites can prevent the injection of charge carriers to XLPE insulation from the semi‐conductive electrode to improve the space charge distribution and DC breakdown strength of XLPE insulation. The polar anhydride groups in the grafted MAH can enhance the interaction between EBA macromolecular chains and between EBA macromolecular chains and carbon black (CB) to improve the dispersion of CB in EBA matrix and the stability of the internal conductive network at the high temperature, improving the properties of EBA‐based semi‐conductive shielding layer and DC electrical properties of XLPE insulation layer. |
| format | Article |
| id | doaj-art-3fb4dd5712f340e59860f7e7ea7f6f48 |
| institution | OA Journals |
| issn | 2397-7264 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj-art-3fb4dd5712f340e59860f7e7ea7f6f482025-08-20T01:55:41ZengWileyHigh Voltage2397-72642025-04-0110251752910.1049/hve2.12504Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulationChengcheng Zhang0Sen Wang1Hong Zhao2Minghua Chen3Xuan Wang4Xiaohong Chi5Key Laboratory of Engineering Dielectrics and Its Application Ministry of Education Harbin University of Science and Technology Harbin ChinaKey Laboratory of Engineering Dielectrics and Its Application Ministry of Education Harbin University of Science and Technology Harbin ChinaKey Laboratory of Engineering Dielectrics and Its Application Ministry of Education Harbin University of Science and Technology Harbin ChinaKey Laboratory of Engineering Dielectrics and Its Application Ministry of Education Harbin University of Science and Technology Harbin ChinaKey Laboratory of Engineering Dielectrics and Its Application Ministry of Education Harbin University of Science and Technology Harbin ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaAbstract To suppress the resistivity positive temperature coefficient (PTC) effect of ethylene‐butyl acrylate copolymer (EBA)‐based semi‐conductive shielding layer and the injection of charge carriers to insulation layer, the polar molecule maleic anhydride (MAH) is grafted onto EBA macromolecules by melt blending and thermal grafting. The resistivity temperature stability of the grafted semi‐conductive composites, as well as the space charge distribution and direct current (DC) breakdown characteristics of cross‐linked polyethylene (XLPE) insulation using the composites as the electrode is investigated. The results show that MAH grafting can significantly reduce the volume resistivity of semi‐conductive composites, especially at a higher temperature, to suppress the PTC effect. And, the grafted semi‐conductive composites can prevent the injection of charge carriers to XLPE insulation from the semi‐conductive electrode to improve the space charge distribution and DC breakdown strength of XLPE insulation. The polar anhydride groups in the grafted MAH can enhance the interaction between EBA macromolecular chains and between EBA macromolecular chains and carbon black (CB) to improve the dispersion of CB in EBA matrix and the stability of the internal conductive network at the high temperature, improving the properties of EBA‐based semi‐conductive shielding layer and DC electrical properties of XLPE insulation layer.https://doi.org/10.1049/hve2.12504 |
| spellingShingle | Chengcheng Zhang Sen Wang Hong Zhao Minghua Chen Xuan Wang Xiaohong Chi Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation High Voltage |
| title | Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation |
| title_full | Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation |
| title_fullStr | Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation |
| title_full_unstemmed | Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation |
| title_short | Influence of maleic anhydride grafting on the positive temperature coefficient effect of semi‐conductive composites and space charge injection to XLPE insulation |
| title_sort | influence of maleic anhydride grafting on the positive temperature coefficient effect of semi conductive composites and space charge injection to xlpe insulation |
| url | https://doi.org/10.1049/hve2.12504 |
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