The Influence of Thermal Aging on the Surface Trap Characteristics and Surface Flashover of Epoxy Resin

材料科学 环氧树脂 复合材料 存水弯(水管) 电弧闪光 热的 曲面(拓扑) 气象学 环境科学 几何学 环境工程 绝缘体(电) 数学 物理
作者
Guochang Li,Kai Hu,Weixin Sun,Fengyuan Xu,Yuanwei Zhu,Yanhui Wei
出处
期刊:ECS Journal of Solid State Science and Technology [Institute of Physics]
卷期号:12 (10): 103017-103017
标识
DOI:10.1149/2162-8777/ad056e
摘要

Surface charge accumulation of epoxy resin is easy to cause surface flashover under DC voltage, and thermal aging is an important factor affecting surface charge and trapping characteristics. In this paper, the electron and hole trap characteristics of epoxy resin were studied by changing the polarity and amplitude of charging voltage. Then, the influence of thermal aging on the trap energy level distribution of epoxy resin is researched by conducting the thermal aging experiment, based on which the influence of the energy level distribution of electron trap on the negative DC flashover characteristics is furtherly studied. Experimental results show that the energy level of electron trap and hole trap on the surface of epoxy resin ranges from 0.70 eV to 0.96 eV, the peak energy level of hole trap is slightly higher than that of electron trap. The maximum of the density of trapped charge in the electron trap and hole trap is 1.98 × 10 20 eV −1 ·m −3 and 1.82 × 10 20 eV −1 ·m −3 respectively. The energy level of traps on the surface of epoxy resin generally shows a deepening trend after thermal aging. The peak energy level of electron trap increases from 0.84 eV to 0.98 eV after 29 d of thermal aging, which is due to the product containing strongly polar group produced by thermal aging. The results of flashover testing shows that the flashover voltage first increases and then decreases with the extension of thermal aging time. With the extension of aging time from 7 d to 29 d, the flashover voltage decreases by about 11.2%, the change of flashover voltage is related to the change of trap energy level distribution on the surface of dielectric. This paper can provide theoretical and experimental basis for the insulation design of epoxy resin applied in electric equipment.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Rosie发布了新的文献求助10
2秒前
2秒前
LKL林完成签到,获得积分10
2秒前
2秒前
1111应助科研通管家采纳,获得10
3秒前
Akim应助科研通管家采纳,获得10
3秒前
3秒前
只A不B应助科研通管家采纳,获得10
3秒前
坦率的匪应助科研通管家采纳,获得10
3秒前
3秒前
李爱国应助科研通管家采纳,获得10
3秒前
田様应助科研通管家采纳,获得10
3秒前
ED应助科研通管家采纳,获得10
3秒前
1111应助科研通管家采纳,获得10
3秒前
4秒前
czh应助科研通管家采纳,获得10
4秒前
4秒前
汉堡包应助拖拖沓沓ttt采纳,获得10
4秒前
坦率的匪应助科研通管家采纳,获得10
4秒前
钮卿完成签到,获得积分10
4秒前
所所应助科研通管家采纳,获得10
4秒前
坦率的匪应助科研通管家采纳,获得10
4秒前
如意的刚应助科研通管家采纳,获得10
4秒前
大模型应助科研通管家采纳,获得10
4秒前
4秒前
4秒前
4秒前
4秒前
4秒前
4秒前
4秒前
4秒前
linmo发布了新的文献求助10
5秒前
5秒前
华仔应助那咋了采纳,获得10
5秒前
威武香水应助木木采纳,获得10
5秒前
阿萨德发布了新的文献求助10
6秒前
7秒前
7秒前
huoshu完成签到,获得积分10
7秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988827
求助须知:如何正确求助?哪些是违规求助? 3531197
关于积分的说明 11252739
捐赠科研通 3269830
什么是DOI,文献DOI怎么找? 1804815
邀请新用户注册赠送积分活动 881915
科研通“疑难数据库(出版商)”最低求助积分说明 809028