Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures
During the operation of multi-electric aircraft, the polytetrafluoroethylene (PTFE) material used to insulate the aviation cable is subjected to a high electric field while working under the extreme conditions of high temperatures for a long time, which can easily cause a partial discharge and even...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/16/3/316 |
| _version_ | 1797318301615915008 |
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| author | Lijian Yuan Xu Zheng Wenbo Zhu Bin Wang Yuanyuan Chen Yunqi Xing |
| author_facet | Lijian Yuan Xu Zheng Wenbo Zhu Bin Wang Yuanyuan Chen Yunqi Xing |
| author_sort | Lijian Yuan |
| collection | DOAJ |
| description | During the operation of multi-electric aircraft, the polytetrafluoroethylene (PTFE) material used to insulate the aviation cable is subjected to a high electric field while working under the extreme conditions of high temperatures for a long time, which can easily cause a partial discharge and even flashover along the surface, which seriously threaten the safe operation of the aircraft. In this paper, the electrical insulation properties of PTFE were regulated via modification by the magnetron sputtering of TiO<sub>2</sub> under high temperatures, and modified PTFE with different sputtering times was prepared. The direct current (DC) surface discharge, surface flashover, and electric aging characteristics of modified PTFE were studied under the condition of 20~200 °C, and the mechanisms by which modification by sputtering of TiO<sub>2</sub> and high temperature influence the insulation properties were analyzed. The results show that the surface discharge intensity increases with the increase in temperature, the modification by sputtering of TiO<sub>2</sub> can significantly inhibit the partial discharge of PTFE, and the flashover voltage first increases and then decreases with the increase in the modification time. The modification by magnetron sputtering can effectively increase the surface potential decay rate of the PTFE, increase the shallow trap energy density, effectively avoid charge accumulation, inhibit the partial discharge phenomenon, and improve the surface electrical insulation and anti-aging properties. |
| first_indexed | 2024-03-08T03:50:27Z |
| format | Article |
| id | doaj.art-21c4079a874d45bea8d872adfa3bb712 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-08T03:50:27Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-21c4079a874d45bea8d872adfa3bb7122024-02-09T15:20:40ZengMDPI AGPolymers2073-43602024-01-0116331610.3390/polym16030316Study on the Electrical Insulation Properties of Modified PTFE at High TemperaturesLijian Yuan0Xu Zheng1Wenbo Zhu2Bin Wang3Yuanyuan Chen4Yunqi Xing5School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, ChinaChina Southern Power Grid Electric Power Research Institute, Guangzhou 510000, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, ChinaDuring the operation of multi-electric aircraft, the polytetrafluoroethylene (PTFE) material used to insulate the aviation cable is subjected to a high electric field while working under the extreme conditions of high temperatures for a long time, which can easily cause a partial discharge and even flashover along the surface, which seriously threaten the safe operation of the aircraft. In this paper, the electrical insulation properties of PTFE were regulated via modification by the magnetron sputtering of TiO<sub>2</sub> under high temperatures, and modified PTFE with different sputtering times was prepared. The direct current (DC) surface discharge, surface flashover, and electric aging characteristics of modified PTFE were studied under the condition of 20~200 °C, and the mechanisms by which modification by sputtering of TiO<sub>2</sub> and high temperature influence the insulation properties were analyzed. The results show that the surface discharge intensity increases with the increase in temperature, the modification by sputtering of TiO<sub>2</sub> can significantly inhibit the partial discharge of PTFE, and the flashover voltage first increases and then decreases with the increase in the modification time. The modification by magnetron sputtering can effectively increase the surface potential decay rate of the PTFE, increase the shallow trap energy density, effectively avoid charge accumulation, inhibit the partial discharge phenomenon, and improve the surface electrical insulation and anti-aging properties.https://www.mdpi.com/2073-4360/16/3/316aviation electrical insulationpolytetrafluoroethylenemagnetron sputteringsurface flashoverelectric aging |
| spellingShingle | Lijian Yuan Xu Zheng Wenbo Zhu Bin Wang Yuanyuan Chen Yunqi Xing Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures Polymers aviation electrical insulation polytetrafluoroethylene magnetron sputtering surface flashover electric aging |
| title | Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures |
| title_full | Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures |
| title_fullStr | Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures |
| title_full_unstemmed | Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures |
| title_short | Study on the Electrical Insulation Properties of Modified PTFE at High Temperatures |
| title_sort | study on the electrical insulation properties of modified ptfe at high temperatures |
| topic | aviation electrical insulation polytetrafluoroethylene magnetron sputtering surface flashover electric aging |
| url | https://www.mdpi.com/2073-4360/16/3/316 |
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