基于热重-红外联用技术的复合硅橡胶老化研究

doi:10.3969/j.issn.1008-0198.2024.01.003

湖南电力 ›› 2024, Vol. 44 ›› Issue (1): 18-23.doi: 10.3969/j.issn.1008-0198.2024.01.003

基于热重-红外联用技术的复合硅橡胶老化研究

陈田田¹, 查方林², 刘奕奕², 万涛², 陈波¹

1.同济大学材料科学与工程学院,上海 201804;
2.国网湖南省电力有限公司电力科学研究院,湖南长沙 410208

收稿日期:2023-12-26 修回日期:2024-01-04 出版日期:2024-02-25 发布日期:2024-03-11
通信作者: 陈波(1983),男,研究员,研究方向为同步辐射X射线及电子显微镜的三维纳微成像技术的开发和应用。
作者简介:陈田田(1999),女,硕士研究生,研究方向为高性能复合硅橡胶绝缘子老化过程中微观结构演化。
基金资助:
国家自然科学基金项目(51971160)

Study on Composite Silicone Rubber Aging Based on TG-FTIR

CHEN Tiantian¹, ZHA Fanglin², LIU Yiyi², WAN Tao², CHEN Bo¹

1. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China;
2. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410208, China

Received:2023-12-26 Revised:2024-01-04 Online:2024-02-25 Published:2024-03-11

摘要/Abstract

摘要： 复合硅橡胶绝缘子已广泛应用于架空输电线路中,但其老化一直是困扰电力行业的重要问题。为探究复合硅橡胶的老化过程,在盐雾环境下加快复合硅橡胶样品的老化过程,采用扫描电子显微镜观察样品老化过程中表面微观形貌变化;并利用热重和傅里叶变换红外光谱分析试样老化过程中的组分质量分数和官能团变化;运用热重-红外联用技术分析复合硅橡胶样品的热解产物。结果表明,盐雾老化后样品的热解产物中含有水蒸气、CO₂及少量的有机硅,这说明盐雾老化会使样品的CH₃Si、(CH₃)₂Si等侧链疏水基团发生水解,产生硅羟基(OHSi)、碳羟基(OHC)等羟基化基团,影响样品的疏水性能,进而降低耐污染性能。

关键词: 复合绝缘子, 硅橡胶, 老化, 热重-红外联用

Abstract: Composite silicone rubber insulators have been widely used in overhead transmission lines, but their aging has always been an important problem. In order to investigate the aging process of the composite silicone rubber, the aging process of the composite silicone rubber samples is accelerated under the salt spraying environment. Scanning electron microscope is used to observe micro-morphology changes of the surfaces during the aging process of the samples.The thermos-gravimetric(TG) and Fourier transform infrared (FTIR) spectroscopies are used to analyze the changes of the component contents and functional groups during the aging process of the specimens.The TG-FTIR technology is used to analyze the pyrolysis products of the composite silicone rubber samples. The results show that after salt spray aging the pyrolysis products of the samples contain water vapor, CO₂ and a little organosilicon.These phenomena indicates that salt spray aging will hydrolyze the hydrophobic groups in the side chains of the samples, such as CH₃Si and (CH₃)₂Si, and produce hydroxylated groups, such as silicone hydroxyl (OHSi)and carbon hydroxyl (OHC), which will affect the hydrophobicity of the samples and reduce the pollution resistance.

Key words: composite insulator, silicone rubber, aging, TG-FTIR

中图分类号:

TM854

陈田田, 查方林, 刘奕奕, 万涛, 陈波. 基于热重-红外联用技术的复合硅橡胶老化研究[J]. 湖南电力, 2024, 44(1): 18-23.

CHEN Tiantian, ZHA Fanglin, LIU Yiyi, WAN Tao, CHEN Bo. Study on Composite Silicone Rubber Aging Based on TG-FTIR[J]. Hunan Electric Power, 2024, 44(1): 18-23.

参考文献

[1] 徐思奕, 曹丹, 周城等. 硅橡胶基阻燃输电绝缘子的老化及寿命预测[J]. 绝缘材料, 2021, 54(5):66-71.
[2] SALEEM M Z, AKBAR M. Review of the performance of high-voltage composite insulators[J]. Polymers, 2022,14(3):431.
[3] 王怡欣. 基于 TG-FTIR 的复合绝缘子伞裙老化特性研究[D]. 北京: 华北电力大学, 2020.
[4] 汪政, 黄振, 彭向阳,等. 复合绝缘子护套-芯棒界面异常老化特征及原因分析[J]. 绝缘材料, 2022, 55(3):112-118.
[5] LI S T, YU S H, FENG Y. Progress in and prospects for electrical insulating materials[J]. High Voltage,2016,1(3): 122-129.
[6] SHIT S C, SHAH P. A review on silicone rubber[J]. National Academy Science Letters, 2013,36(4):355-365.
[7] 彭向阳, 方鹏飞, 黄振,等. 复合绝缘子老化表征及微观诊断技术[M]. 北京: 中国电力出版社, 2018:47.
[8] 金卫东, 王立峰, 罗俊华. 硅橡胶复合绝缘子运行寿命的试验研究[J]. 高电压技术, 2006, 32(8):22-25.
[9] 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.
[10] OLDFIELD D, SYMES T. Long term natural ageing of silicone elastomers[J]. Polymer Testing, 1996, 15(2): 115-128.
[11] 周晨, 周路遥, 李特,等. 浙江省内复合绝缘子断串及芯棒击穿故障分析[J]. 高压电器, 2021, 57(5): 182-188.
[12] ZHANG Z J, PANG G H, MA X D, et al. Mechanical properties of high-temperature vulcanized silicone rubber under acid-fog with AC energized[J]. IEEE Access, 2022, 10: 95553-95564.
[13] LE GAC P Y, LE SAUX V, PARIS M, et al. Ageing mechanism and mechanical degradation behaviour of polychloroprene rubber in a marine environment: Comparison of accelerated ageing and long term exposure[J]. Polymer Degradation and Stability, 2012, 97(3): 288-296.
[14] MORENO V M, GORUR R S. Effect of long-term corona on non-ceramic outdoor insulator housing materials[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2001, 8(1): 117-128.
[15] SHAIK M G, KARUPPAIYAN V. Investigation of surface degradation of aged high temperature vulcanized (HTV) silicone rubber insulators[J]. Energies, 2019, 12(19): 3769.
[16] NAZIR M T, PHUNG B T. Accelerated ultraviolet weathering investigation on micro/nano-SiO₂ filled silicone rubber composites[J]. High Voltage, 2018, 3(4): 295-302.
[17] ZHANG Z J, LIANG T, JIANG X L, et al. Characterization of silicone rubber degradation under salt-fog environment with AC test voltage[J]. IEEE Access, 2019, 7: 66714-66724.
[18] 傅宁. 热重法和热-红联用法对工程塑料降解行为的研究[D]. 上海: 上海交通大学,2013.
[19] 谢从珍, 曾磊磊, 甘永叶,等. 基于热重红外联用的复合绝缘子芯棒热解特性研究[J]. 电工技术学报, 2018, 33(增刊1):227-233.
[20] 褚燕燕,宋树芹, 张曰理,等. 基于分布活化能模型的热重测试技术完善[J]. 实验科学与技术, 2022, 60(6): 1-5.
[21] 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.

基于热重-红外联用技术的复合硅橡胶老化研究

Study on Composite Silicone Rubber Aging Based on TG-FTIR

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

[1]	宁凯, 蒋正龙, 付志瑶. 复合绝缘子硅橡胶老化过程中成分变化规律研究[J]. 湖南电力, 2023, 43(6): 11-14.
[2]	李慧慧, 张博明, 黎子晋, 黎鹏, 吴田. 基于微波透射法的硅橡胶老化检测试验分析[J]. 湖南电力, 2023, 43(2): 14-18.