Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions
When the power converter connects to the high-frequency transformer breaks through the bottleneck and reaches a frequency of 100 kHz or even higher, the high-frequency transformer’s inter-turn insulation faces more serious high-frequency discharge and high-temperature problems. In order to improve t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/23/1880 |
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| _version_ | 1846123999074975744 |
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| author | Xiaonan Li Tong Qin Wenxu Zhang Hong Wang Yanhong Chen Kangle Li Qing Wang Yibo Wang |
| author_facet | Xiaonan Li Tong Qin Wenxu Zhang Hong Wang Yanhong Chen Kangle Li Qing Wang Yibo Wang |
| author_sort | Xiaonan Li |
| collection | DOAJ |
| description | When the power converter connects to the high-frequency transformer breaks through the bottleneck and reaches a frequency of 100 kHz or even higher, the high-frequency transformer’s inter-turn insulation faces more serious high-frequency discharge and high-temperature problems. In order to improve the service performance of oil-immersed high-frequency transformer insulation paper, composite K-BNNS particles are prepared by ultrasonic stripping, heat treatment, and thermomagnetic stirring. Then, K-BNNS particles are mixed with PMIA (polymeric m-phenylenediamine solution) slurry to produce composite aramid paper. And the effects of K-BNNS particles with different contents on the thermal conductivity, dielectric properties, partial discharge properties, and mechanical properties of aramid paper are explored. It can be found that, when the addition of composite particles (K-BNNS) is 10%, the comprehensive performance of composite aramid paper is the best. Compared with Nomex paper, the in-plane and through-plane thermal conductivity of composite insulating paper F-10 increased by 668.33% and 760.66%, respectively. Moreover, the high-frequency breakdown voltage increased by 48.73% and the tensile strength increased by 2.49%. The main reason is that the composite particles form a complete thermal conductive network in the aramid paper matrix and a large number of hydrogen bonds with the matrix, which enhances the internal interface bonding force of the material and changes the charge transport mechanism. |
| format | Article |
| id | doaj-art-948f319eaa104b7dab379e50de300fe4 |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-948f319eaa104b7dab379e50de300fe42024-12-13T16:29:14ZengMDPI AGNanomaterials2079-49912024-11-011423188010.3390/nano14231880Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working ConditionsXiaonan Li0Tong Qin1Wenxu Zhang2Hong Wang3Yanhong Chen4Kangle Li5Qing Wang6Yibo Wang7School of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Electrical Engineering, Northwest Minzu University, Lanzhou 730030, ChinaSchool of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaWhen the power converter connects to the high-frequency transformer breaks through the bottleneck and reaches a frequency of 100 kHz or even higher, the high-frequency transformer’s inter-turn insulation faces more serious high-frequency discharge and high-temperature problems. In order to improve the service performance of oil-immersed high-frequency transformer insulation paper, composite K-BNNS particles are prepared by ultrasonic stripping, heat treatment, and thermomagnetic stirring. Then, K-BNNS particles are mixed with PMIA (polymeric m-phenylenediamine solution) slurry to produce composite aramid paper. And the effects of K-BNNS particles with different contents on the thermal conductivity, dielectric properties, partial discharge properties, and mechanical properties of aramid paper are explored. It can be found that, when the addition of composite particles (K-BNNS) is 10%, the comprehensive performance of composite aramid paper is the best. Compared with Nomex paper, the in-plane and through-plane thermal conductivity of composite insulating paper F-10 increased by 668.33% and 760.66%, respectively. Moreover, the high-frequency breakdown voltage increased by 48.73% and the tensile strength increased by 2.49%. The main reason is that the composite particles form a complete thermal conductive network in the aramid paper matrix and a large number of hydrogen bonds with the matrix, which enhances the internal interface bonding force of the material and changes the charge transport mechanism.https://www.mdpi.com/2079-4991/14/23/1880high-frequency operating conditionscomposite aramid paperBNNScompound particles |
| spellingShingle | Xiaonan Li Tong Qin Wenxu Zhang Hong Wang Yanhong Chen Kangle Li Qing Wang Yibo Wang Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions Nanomaterials high-frequency operating conditions composite aramid paper BNNS compound particles |
| title | Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions |
| title_full | Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions |
| title_fullStr | Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions |
| title_full_unstemmed | Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions |
| title_short | Preparation and Performance Study of Composite Aramid Paper for High-Frequency Working Conditions |
| title_sort | preparation and performance study of composite aramid paper for high frequency working conditions |
| topic | high-frequency operating conditions composite aramid paper BNNS compound particles |
| url | https://www.mdpi.com/2079-4991/14/23/1880 |
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