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| Research on Insulating Performance and Dielectric Properties of Montmorillonite/Polyimide Fiber Paper-based Material |
| Received:April 14, 2023 |
| DOI：10.11980/j.issn.0254-508X.2023.11.002 |
| Key Words:polyimide fiber insulating paper montmorillonite dielectric properties |
| Fund Project:国家自然科学基金项目（22178211）；国家级大学生创新创业训练计划资助项目（202210708005）；陕西省技术创新引导专项（2023GXLH-077）；陕西省重点研发计划项目（2021ZDLGY14-05）；西安市科技计划项目（2019220114SYS016CG038）；浙江省重点研发计划项目（2019C04008）；浙江省“尖兵”“领雁”研发攻关计划（2022C01066）。 |
| Author Name | Affiliation | Postcode | | XU Mingyuan* | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 | 710021 | | JIA Fengfeng | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 | 710021 | | LIU Yuanqing | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 | 710021 | | GUO Zizhan | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 | 710021 | | WANG Ruanyu | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 | 710021 | | SHA Lizheng | School of Environmental and Natural Resource, Zhejiang University of Science & Technology, Hangzhou, Zhejiang Province, 310023 | 310023 | | LU Zhaoqing | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 | 710021 |
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| Abstract:In this study， the effects of paper basis weight and montmorillonite content on the physical performances and dielectric properties of polyimide fiber paper-based materials were investigated by monofactor analysis method. The results showed that there was no significant difference in the appearance of polyimide fiber paper-based materials with different paper basis weight. When the paper basis weight was 80 g/m2， the polyimide fiber paper-based materials had the optimal physical performances， with the tensile index and tear index reaching 15.0 N·m/g and 19.7 mN·m2/g， respectively. When the dosage of montmorillonite was 6%， the volume resistivity of montmorillonite/polyimide fiber paper-based material achieved the highest value， reaching 2.59×1015 Ω·m. When the dosage of montmorillonite reached 8%， the montmorillonite/polyimide fiber paper-based material possessed the best insulation performance， the puncture intensity with working frequency reached 17.34 kV/mm， and the relative permittivity and dielectric loss reached 4.99 and 0.23， respectively， at the frequency of 50 Hz. |
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