摘要
为了提升高压套管外绝缘用硫化硅橡胶的性能,采用Geant4蒙特卡洛方法获取了电子束在硅橡胶片的最大有效穿透深度约为9.75 mm。实验分析了电子束补充硫化改性的效果,结果表明电子束补充硫化方法可以改变硅橡胶形貌结构,使其表面呈现斑纹状,在一定程度上提高硅橡胶的疏水性能,在120 kGy辐照剂量下,其接触角从97°增大为111°,可以显著提升硅橡胶的拉伸强度,拉伸强度增大了约0.5 MPa,直接降低硅橡胶的玻璃化转变温度,并且显著提高硅橡胶的热解温度,起始热解温度提升约20℃,从而一定程度改善了硅橡胶的热稳定性。相关数据可以为改进高压套管外绝缘性能提供技术支撑。
In order to improve the properties of vulcanized silicone rubber for external insulation of high voltage bushing,the maximum effective penetration depth of electron beam in silicone rubber sheet is about 9. 75 mm by using Geant4 Monte Carlo method. The effect of electron beam supplementary vulcanization was analyzed. The results show that electron beam supplementary vulcanization can change the morphology and structure of silicone rubber,make its surface appear mottled,and improve the hydrophobicity of silicone rubber to a certain extent. Under the irradiation dose of 120 kGy,the contact angle increases from 97° to 111° which can significantly improve the tensile strength of silicone rubber,and the tensile strength increases by about 0. 5%,and the glass transition temperature of silicone rubber is reduced directly,and the pyrolysis temperature of silicone rubber is increased significantly,the initial pyrolysis temperature was increased by about 20 ℃,which improved the thermal stability of silicone rubber to a certain extent. The relevant data can provide technical support for improving the external insulation performance of high voltage bushing.
作者
董晓晗
王卓
盛轲焱
张力
陈太炎
周子健
庞仕强
左晨
黄江
DONG Xiaohan;WANG Zhuo;SHENG Keyan;ZHANG Li;CHEN Taiyan;ZHOU Zijian;PANG Shiqiang;ZUO Chen;HUANG Jiang(Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Wuhan 430074,China;NARI Group Cooperation(State Grid Electric Power Research Institute),Wuhan 430074,China;State Grid Electric Power Research Institute Wuhan NARI Co.,Ltd.,Wuhan 430074,China)
出处
《电瓷避雷器》
CAS
北大核心
2021年第2期123-127,共5页
Insulators and Surge Arresters
基金
国家自然科学基金(编号:11975106)
国网电力科学研究院有限公司科技资助项目(编号:524625180040)。
关键词
硅橡胶
电子束
补充硫化
二次硫化
蒙特卡洛方法
silicone rubber
electron beam
supplementary vulcanization
secondary vulcanization
Monte Carlo method
