Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite
Abstract Space charge accumulation in polypropylene materials for direct current capacitor will accelerate the ageing of the materials, resulting in the degradation of their insulation properties. Besides, it will also affect the dielectric properties of the capacitor in a long term. In this paper,...
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| Format: | Article |
| Language: | English |
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Wiley
2025-02-01
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| Series: | High Voltage |
| Online Access: | https://doi.org/10.1049/hve2.12497 |
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| author | Guochang Li Tianzhen Liu Zhenlu Gu Xiaolong Chen Beibei Sun Yuanwei Zhu Shengtao Li Yanhui Wei |
| author_facet | Guochang Li Tianzhen Liu Zhenlu Gu Xiaolong Chen Beibei Sun Yuanwei Zhu Shengtao Li Yanhui Wei |
| author_sort | Guochang Li |
| collection | DOAJ |
| description | Abstract Space charge accumulation in polypropylene materials for direct current capacitor will accelerate the ageing of the materials, resulting in the degradation of their insulation properties. Besides, it will also affect the dielectric properties of the capacitor in a long term. In this paper, a ternary composite of polyaniline (PANI)/maleic anhydride functionalised PP (PP‐g‐MAH)/polypropylene (PP) based on the PANI@ dopamine (PDA) coating structure is constructed from two perspectives of PP matrix grafting and PANI nano particle. This method takes advantage of the high permittivity and good compatibility of PANI to improve the relative dielectric constant of the composite while introducing deep traps inside the composite to inhibit space charge accumulation coating. The experimental results show that with the increase in PANI content, the maximum relative permittivity can be increased by 62%. The addition of the appropriate amount of PANI can effectively inhibit the space charge accumulation. The relative dielectric constant of the composite decreases significantly due to the heteropolar space charge. The relative dielectric constant of the modified polyaniline composites decreased significantly. The reduction rate decreased from 38% before modification to 12% after modification. This work has certain guiding significance for solving space charge problem of direct current capacitor. |
| format | Article |
| id | doaj-art-95df05bfa3fd4ec8aebb49ae81649670 |
| institution | DOAJ |
| issn | 2397-7264 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj-art-95df05bfa3fd4ec8aebb49ae816496702025-08-20T03:00:09ZengWileyHigh Voltage2397-72642025-02-0110117818510.1049/hve2.12497Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary compositeGuochang Li0Tianzhen Liu1Zhenlu Gu2Xiaolong Chen3Beibei Sun4Yuanwei Zhu5Shengtao Li6Yanhui Wei7College of Materials Science and Engineering Qingdao University of Science and Technology Qingdao ChinaCollege of Materials Science and Engineering Qingdao University of Science and Technology Qingdao ChinaCollege of Materials Science and Engineering Qingdao University of Science and Technology Qingdao ChinaCollege of Materials Science and Engineering Qingdao University of Science and Technology Qingdao ChinaCollege of Materials Science and Engineering Qingdao University of Science and Technology Qingdao ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaCollege of Materials Science and Engineering Qingdao University of Science and Technology Qingdao ChinaAbstract Space charge accumulation in polypropylene materials for direct current capacitor will accelerate the ageing of the materials, resulting in the degradation of their insulation properties. Besides, it will also affect the dielectric properties of the capacitor in a long term. In this paper, a ternary composite of polyaniline (PANI)/maleic anhydride functionalised PP (PP‐g‐MAH)/polypropylene (PP) based on the PANI@ dopamine (PDA) coating structure is constructed from two perspectives of PP matrix grafting and PANI nano particle. This method takes advantage of the high permittivity and good compatibility of PANI to improve the relative dielectric constant of the composite while introducing deep traps inside the composite to inhibit space charge accumulation coating. The experimental results show that with the increase in PANI content, the maximum relative permittivity can be increased by 62%. The addition of the appropriate amount of PANI can effectively inhibit the space charge accumulation. The relative dielectric constant of the composite decreases significantly due to the heteropolar space charge. The relative dielectric constant of the modified polyaniline composites decreased significantly. The reduction rate decreased from 38% before modification to 12% after modification. This work has certain guiding significance for solving space charge problem of direct current capacitor.https://doi.org/10.1049/hve2.12497 |
| spellingShingle | Guochang Li Tianzhen Liu Zhenlu Gu Xiaolong Chen Beibei Sun Yuanwei Zhu Shengtao Li Yanhui Wei Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite High Voltage |
| title | Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite |
| title_full | Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite |
| title_fullStr | Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite |
| title_full_unstemmed | Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite |
| title_short | Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite |
| title_sort | space charge characteristics and dielectric properties of pani pp g mah pp ternary composite |
| url | https://doi.org/10.1049/hve2.12497 |
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