摘要
从附件硅橡胶材料的力学性能出发,对目前市面上某主流附件进行加速热老化试验,随后对附件硅橡胶的拉伸特性和热失重特性进行测试,并利用Arrhenius公式基于硅橡胶材料的断裂伸长保留率构建其寿命模型。结果表明:热老化试验后硅橡胶的力学性能下降,具体表现为弹性模量增大,拉伸强度和断裂伸长率降低。仅考虑硅橡胶材料的热老化时,电缆附件的理论运行寿命为13.0~44.5年。
Based on the mechanical properties of the accessory silicone rubber material,a mainstream accessory on the market at present were conducted accelerated thermal ageing test,and then the tensile properties and thermal weight loss characteristics of the accessory silicone rubber were tested.The life model of silicone rubber was built based on its breaking elongation retention rate by using Arrhenius formula.The results show that the mechanical properties of silicone rubber decrease after thermal ageing,which is manifested by the increase of elastic modulus and the decrease of tensile strength and elongation at break.When only consider the thermal ageing of silicone rubber material,the theoretical operating life of cable accessories is 13.0–44.5 years.
作者
朱卫东
谢庆
ZHU Weidong;XIE Qing(Department of Electrical Engineering,North China Electric Power University,Baoding 071003,China)
出处
《绝缘材料》
CAS
北大核心
2023年第10期107-111,共5页
Insulating Materials
基金
国家自然科学基金资助项目(51777076)。
