摘要
研究三元乙丙橡胶(EPDM)和丁腈橡胶(NBR)在不同气氛[空气、二氧化碳(CO2)、全氟异丁腈(C4F7N)/CO2混合气体(体积比为1/4)、C4F7N]下老化后的化学结构和物理性能变化。结果表明:在空气气氛下老化后,EPDM和NBR的老化程度较严重;在CO2、C4F7N/CO2混合气体和C4F7N气氛下老化后,EPDM的老化程度明显低于NBR;CO2和C4F7N对EPDM的物理性能影响较小,且与EPDM的兼容性较好。EPDM适用于采用CO2和C4F7N作绝缘气体的电气设备密封件。
The changes of chemical structure and physical properties of ethylene-propylene-diene rubber(EPDM)and nitrile rubber(NBR)aged in different atmosphere[air,carbon dioxide(CO2),perfluoroisobutyronitrile(C4F7N)/CO2(1/4 by volume),C4F7N]were investigated.The results showed that,the aging degree of EPDM and NBR were severe in air atmosphere aging condition,while the aging degree of EPDM was clearly lower than that of NBR in CO2,C4F7N/CO2 and C4F7N atmosphere aging condition.CO2 and C4F7N showed less influence on the physical properties of EPDM,and had the better compatibility with EPDM.EPDM was suitable for the seals of electrical equipment using CO2 and C4F7N as insulating gas.
作者
张亚茹
刘静
黄青丹
王勇
曾炼
ZHANG Yaru;LIU Jing;HUANG Qingdan;WANG Yong;ZENG Lian(Electric Power Test and Research Institute,Guangzhou Power Supply Co.,Ltd,Guangzhou 510410,China)
出处
《橡胶工业》
CAS
2020年第3期177-180,共4页
China Rubber Industry
基金
环境友好新型绝缘气体理化、绝缘性能及工程示范技术研究(1期)——课题3广州电网新型绝缘气体应用可行性研究(GZJKJXM20170330)。
