Study on Composition Change Rule of Composite Insulator Silicone Rubber During Aging Process

doi:10.3969/j.issn.1008-0198.2023.06.003

Abstract

Abstract: In order to study the variation rule of components in silicone rubber of composite insulators during aging process, various tests are conducted on unused silicone rubber as well as silicone rubber used for 2, 6 and 10 years. These tests includ scanning electron microscopy analysis, thermogravimetric analysis, differential scanning calorimetry analysis, Fourier transform infrared analysis, and X-ray spectroscopy analysis. The relevant results show that during operation, the integrity of silicone rubber molecular chains deteriorates, and more and more cracks and voids appear on the surface of silicone rubber. Additionally, the operation of silicone rubber is closely related to the variation and precipitation of aluminum hydroxide in its components, with aluminum hydroxide experiencing the most significant changes during operation. This study can better reflect the surface aging status of silicone rubber and is of great significance for the formulation design and aging failure analysis of composite insulators.

Key words: composite insulators, silicone rubber, aluminum hydroxide, aging process, component analysis

CLC Number:

TM855.2

NING Kai, JIANG Zhenglong, FU Zhiyao. Study on Composition Change Rule of Composite Insulator Silicone Rubber During Aging Process[J]. Hunan Electric Power, 2023, 43(6): 11-14.

References

[1]PATHAK D, SATWANI M, PATEL M, et al. The development of silicone rubber composite insulators in power system[C]//2009 International Conference on Control, Automation, Communication and Energy Conservation. Perundurai,India.IEEE, 2009:1-4.
[2]关志成,彭功茂,王黎明,等.复合绝缘子的应用及关键技术研究[J].高电压技术,2011,37(3):513-519.
[3]HACKAM R. Outdoor HV composite polymeric insulators[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1999, 6(5): 557-585.
[4]NADERIAN A, SANAYE-PASAND M, MOHSENI H. A review of artificial contamination withstand test methods of high voltage outdoor insulators[C]//Conference Record of the 2004 IEEE International Symposium on Electrical Insulation. IEEE, 2004: 284-287.
[5]AMIN M, AKBAR M, SALMAN M. Composite insulators and their aging:an overview[J]. Science in China Series E: Technological Sciences, 2007,50(6):697-713.
[6]SALEEM M Z, AKBAR M. Review of the performance of high-voltage composite insulators[J]. Polymers,2022, 14(3): 431.
[7]LIANG X D,WANG S W,FAN J, et al. Development of composite insulators in China[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1999, 6(5): 586-594.
[8]张福增,宋磊,屠幼萍,等.500kV复合绝缘子运行特性分析[J].高电压技术,2012,38(10):2536-2541.
[9]彭向阳,李子健,黄振,等.基于TG-DSC法的复合绝缘子硅橡胶主组分含量研究[J].南方电网技术,2017,11(1):36-44.
[10]AKBAR M, ULLAH R, ALAM S. Aging of silicone rubber-based composite insulators under multi-stressed conditions: an overview[J]. Materials Research Express, 2019, 6(10): 102003.
[11]TANAKA T. Aging of polymeric and composite insulating materials. Aspects of interfacial performance in aging[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2002, 9(5): 704-716.
[12]ROWLAND S M, XIONG Y, ROBERTSON J, et al. Aging of silicone rubber composite insulators on 400 kV transmission lines[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2007, 14(1): 130-136.
[13]谢从珍,刘珊,袁超,等.氧化铁对复合绝缘子用高温硫化硅橡胶性能的影响[J].高电压技术,2014,40(12):3674-3679.
[14]王康,王建国,郑峰,等.氢氧化铝含量对硅橡胶结构及憎水恢复性的影响[J].高电压技术,2015,41(2):468-473.
[15]王康,王建国,郑峰,等. 白炭黑含量对硅橡胶结构和憎水恢复性影响[C]//中国无机盐工业协会无机硅化物分会.2016年全国无机硅化物行业年会暨创新发展研讨会论文集.郑州,2016:235-241..
[16]ILHAN S, TUZUN D, OZDEMIR A. Comparative properties of HTV silicone rubber for composite insulators—ATH and silica fillers[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2021, 28(2): 414-422.
[17]MOMEN G, FARZANEH M. Survey of micro/nano filler use to improve silicone rubber for outdoor insulators[J]. Reviews on Advanced Materials Science, 2011, 27(1): 1-13.
[18]KURUVILLA S P, RENUKAPPA N M, RAJAN J S. Development of epoxy with nano and micro fillers for core insulation of composite insulators[C]//2019 International Conference on High Voltage Engineering and Technology (ICHVET). Hydrabad,India.IEEE, 2019: 1-5.
[19]CHENG L, WANG L, GUAN Z, et al. Aging characterization and lifespan prediction of silicone rubber material utilized for composite insulators in areas of atypical warmth and humidity[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2016, 23(6): 3547-3555.
[20]KIM J, CHAUDHURY M K, OWEN M J. Hydrophobic recovery of polydimethylsiloxane elastomer exposed to partial electrical discharge[J]. Journal of Colloid and Interface Science, 2000, 226(2): 231-236.
[21]TóTH A, BERTTóTI I, BLAZSó M, et al. Oxidative damage and recovery of silicone rubber surfaces. I. X-ray photoelectron spectroscopic study[J]. Journal of Applied Polymer Science, 1994, 52(9): 1293-1307.