Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN
Abstract In order to adapt to the development of electronic devices, it is necessary to improve the thermal conductivity and breakdown strength of composites. Boron nitride (BN) is an ideal candidate material with high breakdown strength and thermal conductivity. Therefore, the introduction of BN na...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-06-01
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| Series: | High Voltage |
| Online Access: | https://doi.org/10.1049/hve2.12150 |
| _version_ | 1811318346023436288 |
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| author | Yanxin Li Zhuo Wang Menglei Kong Zhihui Yi |
| author_facet | Yanxin Li Zhuo Wang Menglei Kong Zhihui Yi |
| author_sort | Yanxin Li |
| collection | DOAJ |
| description | Abstract In order to adapt to the development of electronic devices, it is necessary to improve the thermal conductivity and breakdown strength of composites. Boron nitride (BN) is an ideal candidate material with high breakdown strength and thermal conductivity. Therefore, the introduction of BN nanosheets into the polyvinylidene fluoride (PVDF) matrix can improve the thermal conductivity and breakdown strength of the composites at the same time. However, BN nanosheets can easily agglomerate in the matrix, which limits the improvement of the properties of the composites. To overcome this difficulty, appropriate water‐bath heating was used to improve the fluidity of PVDF. Therefore, the dispersion of the filler is improved. When the volume fraction of BN nanosheets is 3% and the preparation temperature is 45°C, the energy storage density of the composites reached 18.5 J/cm3 at 540 kV/mm. At this point, the thermal conductivity was 0.49 W/(m⋅K), 3.5 times that of the pure PVDF film. |
| first_indexed | 2024-04-13T12:24:54Z |
| format | Article |
| id | doaj.art-12027502f0ec44efb69d84187c6f4023 |
| institution | Directory Open Access Journal |
| issn | 2397-7264 |
| language | English |
| last_indexed | 2024-04-13T12:24:54Z |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj.art-12027502f0ec44efb69d84187c6f40232022-12-22T02:47:04ZengWileyHigh Voltage2397-72642022-06-017359560510.1049/hve2.12150Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BNYanxin Li0Zhuo Wang1Menglei Kong2Zhihui Yi3School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an ChinaAbstract In order to adapt to the development of electronic devices, it is necessary to improve the thermal conductivity and breakdown strength of composites. Boron nitride (BN) is an ideal candidate material with high breakdown strength and thermal conductivity. Therefore, the introduction of BN nanosheets into the polyvinylidene fluoride (PVDF) matrix can improve the thermal conductivity and breakdown strength of the composites at the same time. However, BN nanosheets can easily agglomerate in the matrix, which limits the improvement of the properties of the composites. To overcome this difficulty, appropriate water‐bath heating was used to improve the fluidity of PVDF. Therefore, the dispersion of the filler is improved. When the volume fraction of BN nanosheets is 3% and the preparation temperature is 45°C, the energy storage density of the composites reached 18.5 J/cm3 at 540 kV/mm. At this point, the thermal conductivity was 0.49 W/(m⋅K), 3.5 times that of the pure PVDF film.https://doi.org/10.1049/hve2.12150 |
| spellingShingle | Yanxin Li Zhuo Wang Menglei Kong Zhihui Yi Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN High Voltage |
| title | Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN |
| title_full | Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN |
| title_fullStr | Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN |
| title_full_unstemmed | Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN |
| title_short | Improved thermal conductivity and breakdown strength of PVDF‐based composites by improving the dispersion of BN |
| title_sort | improved thermal conductivity and breakdown strength of pvdf based composites by improving the dispersion of bn |
| url | https://doi.org/10.1049/hve2.12150 |
| work_keys_str_mv | AT yanxinli improvedthermalconductivityandbreakdownstrengthofpvdfbasedcompositesbyimprovingthedispersionofbn AT zhuowang improvedthermalconductivityandbreakdownstrengthofpvdfbasedcompositesbyimprovingthedispersionofbn AT mengleikong improvedthermalconductivityandbreakdownstrengthofpvdfbasedcompositesbyimprovingthedispersionofbn AT zhihuiyi improvedthermalconductivityandbreakdownstrengthofpvdfbasedcompositesbyimprovingthedispersionofbn |