Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating
Composite insulator is an important component of outdoor insulation systems. It works in complex environments and faces a series of problems such as surface contamination, loss of hydrophobicity, and accumulation of surface charges, which may eventually lead to flashover. Aiming to solve these probl...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/162863 |
| _version_ | 1811691539213058048 |
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| author | Liu, Shuming Liu, Shuqi Wang, Qian Zuo, Zhou Wei, Lan Chen, Zhong Liang, Xidong |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Liu, Shuming Liu, Shuqi Wang, Qian Zuo, Zhou Wei, Lan Chen, Zhong Liang, Xidong |
| author_sort | Liu, Shuming |
| collection | NTU |
| description | Composite insulator is an important component of outdoor insulation systems. It works in complex environments and faces a series of problems such as surface contamination, loss of hydrophobicity, and accumulation of surface charges, which may eventually lead to flashover. Aiming to solve these problems in a simple and scalable method, we propose a multifunctional nano-coating based on SiO2/PDMS/EP. By the combination of multiscale structure and low surface energy modification, this coating shows excellent water-repellency performance, a large contact angle greater than 160° and a small rolling angle near 0° are achieved on coated silicone rubber, which enables the surface with excellent self-cleaning performance. Benefiting from the multiscale roughness, the heat transfer is inhibited by the reduced contact area, which further slows down the icing process on coated silicone rubber. The de-icing force on coated silicone rubber is also smaller than that on pristine silicone rubber. This coating also introduces many shallow traps to the surface, which is beneficial to the fast surface charge dissipation in a short time. Besides, the high water-repelling ability can promote the droplet to roll away under the action of electrical field force, which alleviates the electrical distortion caused by the droplets. As a result, the wet flashover voltage of coated silicone rubber is 60% higher than that of pristine silicone rubber. This multifunctional coating is a facile, scalable, and effective approach to improving the comprehensive surface performance of insulators. |
| first_indexed | 2024-10-01T06:21:30Z |
| format | Journal Article |
| id | ntu-10356/162863 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:21:30Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1628632023-07-14T16:07:24Z Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating Liu, Shuming Liu, Shuqi Wang, Qian Zuo, Zhou Wei, Lan Chen, Zhong Liang, Xidong School of Materials Science and Engineering Engineering::Materials Composite Insulator Multifunctional Coating Composite insulator is an important component of outdoor insulation systems. It works in complex environments and faces a series of problems such as surface contamination, loss of hydrophobicity, and accumulation of surface charges, which may eventually lead to flashover. Aiming to solve these problems in a simple and scalable method, we propose a multifunctional nano-coating based on SiO2/PDMS/EP. By the combination of multiscale structure and low surface energy modification, this coating shows excellent water-repellency performance, a large contact angle greater than 160° and a small rolling angle near 0° are achieved on coated silicone rubber, which enables the surface with excellent self-cleaning performance. Benefiting from the multiscale roughness, the heat transfer is inhibited by the reduced contact area, which further slows down the icing process on coated silicone rubber. The de-icing force on coated silicone rubber is also smaller than that on pristine silicone rubber. This coating also introduces many shallow traps to the surface, which is beneficial to the fast surface charge dissipation in a short time. Besides, the high water-repelling ability can promote the droplet to roll away under the action of electrical field force, which alleviates the electrical distortion caused by the droplets. As a result, the wet flashover voltage of coated silicone rubber is 60% higher than that of pristine silicone rubber. This multifunctional coating is a facile, scalable, and effective approach to improving the comprehensive surface performance of insulators. Submitted/Accepted version This work was supported by the National Natural Science Foundation of China (grant number: 51921005), and we thank the support from the China Scholarship Council for the study abroad of Shuming Liu. 2022-11-11T04:36:55Z 2022-11-11T04:36:55Z 2023 Journal Article Liu, S., Liu, S., Wang, Q., Zuo, Z., Wei, L., Chen, Z. & Liang, X. (2023). Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating. Chemical Engineering Journal, 451, 138679-. https://dx.doi.org/10.1016/j.cej.2022.138679 1385-8947 https://hdl.handle.net/10356/162863 10.1016/j.cej.2022.138679 2-s2.0-85136495601 451 138679 en Chemical Engineering Journal © 2022 Elsevier B.V. All rights reserved. This paper was published in Chemical Engineering Journal and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Materials Composite Insulator Multifunctional Coating Liu, Shuming Liu, Shuqi Wang, Qian Zuo, Zhou Wei, Lan Chen, Zhong Liang, Xidong Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating |
| title | Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating |
| title_full | Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating |
| title_fullStr | Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating |
| title_full_unstemmed | Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating |
| title_short | Improving surface performance of silicone rubber for composite insulators by multifunctional Nano-coating |
| title_sort | improving surface performance of silicone rubber for composite insulators by multifunctional nano coating |
| topic | Engineering::Materials Composite Insulator Multifunctional Coating |
| url | https://hdl.handle.net/10356/162863 |
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