ارتقا عملکرد پوششهای سیلیکونی جهت مقابله با اثرات آلودگی هوا در کارایی مقره های الکتریکی
الموضوعات :
سحر عبدالهی باغبان
1
,
نرگس ربانی خواه
2
1 - پژوهشگاه رنگ، گروه محیط زیست و رنگ
2 - دانشکده مهندسی پلیمر و رنگ، دانشگاه صنعتی امیرکبیر، تهران، ایران.
الکلمات المفتاحية: سیلیکون-رابر, پوششهای آبگریز و خودتمیزشونده, میکرو و نانو ذرات, اصلاحات سطحی, مقرههای الکتریکی.,
ملخص المقالة :
این مقاله مروری به بررسی روشهای بهبود عملکرد پوششهای سیلیکونی جهت مقرههای الکتریکی در شرایط محیطی سخت و آلوده می‌پردازد. در راستای بهبود خواص پوششهای سیلیکونی، پرکنندههای میکرومتری، نانومتری و مخلوط میکرو/نانو ذرات (اکسیدهای معدنی: سیلیکا، نانورس، CaCO3، ZnO، TiO2، Ta2O5، Co3O4، SnO2، آلومینیوم نیترید (AlN)، نیترید بور، باریم تیتانات، آلومینیوم تری‌هیدروکسید (ATH) و پرکنندههای آلی: نانو لولههای کربن(CNT)،CNT چندجداره، مونت موریلونیت، اکسید گرافن) استفادهشدهاند. نتایج نمایانگر افزایش دوام و کارایی پوششها از طریق تقویت مکانیکی و شیمیایی بودهاست بطوریکه اعمال پرکننده‌ها با نسبت‌های بهینه مانند میکرو و نانوذرات سیلیکا و AlN در پوشش، موجب افزایش استحکام مکانیکی و کششی پوششها، افزایش خاصیت فوق‌آبگریزی، کاهش اثرات پیری و تخریب ناشی از تابشUV، فرسایش حرارتی و آلودگی، ارتقا مقاومت دی‌الکتریک و پایداری سطحی در برابر تخلیه الکتریکی، کاهش جریان نشتی و همچنین افزایش مقاومت tracking گردید. در نتیجه گزارش شد که پوششهای سیلیکون-رابر-اتیلن پروپیلن دیان مونومر رابر حاوی نانو ذرات سیلیس اصلاح‌شده، ATH، پایدار‌کننده‌هایUV، روغن سیلیکون، بالاترین آبگریزی با زبری سطح بهبودیافته و خواص خودتمیزشوندگی (زاویهی تماس قطرهی آب 161º، زاویهی تماس پیشرونده 172º و زاویهی تماس پسروندهی 169º) را از خود ارائه کرد. نتیجتا این پوششها قابلیت اعمال روی مقرههای ولتاژ بالا با کارایی بالا (مقاومت حجمی 1017× 5/1 (Ω.cm)، مقاومت سطحی 1012× 5/1 (Ω.cm)، مقاومت tracking 500 دقیقه در KV5، ولتاژ شکست بالا KV 145، ثابت دی الکتریک 4/4، مقاومت در برابر آتش بالا تا ºC 340 و خدمات طولانی در دمای بالا) بدون نیاز به شستشوی مداوم را دارند.
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2. F. Faiza, A. Khattak, A. U. Rehman, A. Ali, A. Mahmood, K. Imran, Multi-stressed nano and micro-silica/silicone rubber composites with improved dielectric and high-voltage insulation properties, Polymers (Basel), 13(2021)1400.
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4. Q. Wang, S. Liu, S. Liu, Z. Zuo, Y. Gao, C. Wu, Super-hydrophobic silicone rubber for outdoor electrical insulation, Nano Today, 58(2024)102406.
5. M. Gunasekaran, Basic forensic analysis of polymer concrete high voltage insulation in various applications, IEEE Electrical Insulation Conference, (2020)90–93.
6. L. E. Schmidt, A. Krivda, C. H. Ho, M. Portaluppi, Polymer concrete outdoor insulation – experience from laboratory and demonstrator testing, Annual Report Conference on Electrical Insulation and Dielectric Phenomena, (2010)1–3.
7. X. Tang, T. Wang, F. Yu, X. Zhang, Q. Zhu, L. Pang, Simple, robust and large-scale fabrication of superhydrophobic surfaces based on silica/polymer composites, RSC Advances, 3(2013)25670.
8. X. Zhang, Method for recoating RTV anti-pollution flashover coating on insulator coated with RTV anti-pollution flashover coating, (2016).
9. D. Qian, J. Zhou, J. Zheng, J. Cao, J. Wan, H. Fan, Synthesis, curing behaviors and properties of a bio-based trifunctional epoxy silicone modified epoxy thermosets, Polymers (Basel), 14(2022)4391.
10. H. Ye, L. Zhu, W. Li, H. Liu, H. Chen, Simple spray deposition of a water-based superhydrophobic coating with high stability for flexible applications, Journal of Materials Chemistry A, 5(2017)9882–9890.
11. C. Sunanda, M. N. Dinesh, N. Vasudev, Performance evaluation of silicon rubber insulating material with MgO and ZnO nanofillers, IEEE International Conference on High Voltage Engineering and Application, (2016)1–5.
12. C.-F. Jeffrey Kuo, N. Ahmad, S.-Y. Lin, G. R. S. Dewangga, M.-Y. Dong, Synthesis and characteristic applications of silicon resins for the modifying agent in heat conduction, Textile Research Journal, 92(2022)871–885.
13. V. S. Joseph, T. Calais, T. Stalin, S. Jain, N. K. Thanigaivel, N. D. Sanandiya, Silicone/epoxy hybrid resins with tunable mechanical and interfacial properties for additive manufacture of soft robots, Applied Materials Today, 22(2021)100979.
14. X. Wu, X. Li, J. Zhong, X. Xu, B. Xu, B. Ai, Preparation and characterization of UV-curable silicone resin containing perfluorocyclobutyl aryl ether groups, Silicon, 15(2023)5691–5701.
15. L. Wu, X. Wang, L. Ning, J. Han, Z. Wan, M. Lu, Improvement of silicone rubber properties by addition of nano-SiO₂ particles, Journal of Applied Biomaterials & Functional Materials, 14(2016)11–14.
16. C. Robeyns, L. Picard, F. Ganachaud, Synthesis, characterization and modification of silicone resins: An augmented review, Progress in Organic Coatings, 125(2018)287–315.
17. A. Jahromi, E. Cherney, S. Jayaram, Aging characteristics of RTV silicone rubber insulator coatings, IEEE Transactions on Dielectrics and Electrical Insulation, 15(2008)444–452.
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