高压断路器灭弧喷口用PTFE复合材料研究  

Study on PTFE composites for arc-extinguishing nozzle of high voltage circuit breaker

作　　者：张娜娜 杨跃飞 王宁 董保莹 侯国良 李永奎 孙艳娜 Zhang Nana;Yang Yuefei;Wang Ning;Dong Baoying;Hou Guoliang;Li Yongkui;Sun Yanna(Henan Pinggao Electric Co.,Ltd.,Pingdingshan 467001,China)

机构地区：[1]河南平高电气股份有限公司,河南平顶山467001

出　　处：《化学推进剂与高分子材料》2025年第2期60-64,共5页Chemical Propellants & Polymeric Materials

基　　金：河南平高电气股份有限公司资金支持项目(PDKJ2024–024)。

摘　　要：通过高速混合机械共混、冷压成型和高温烧结工艺,制备了不同压制工艺的六方氮化硼(BN)填充的聚四氟乙烯(PTFE)复合材料。采用万能拉伸试验机对不同压制工艺PTFE复合材料进行力学性能测试,采用DSC–Ⅲ型高压试验操作台对PTFE复合材料进行击穿强度测试。结果表明:相同保压时间,采用双面压制工艺,不卸载压力进行保压,可有效提高PTFE复合材料的拉伸强度、断裂伸长率、击穿强度和密度均匀性;保压时间延长,PTFE复合材料的拉伸强度、击穿强度和密度分布均匀性提升;上、下端同时保压较上、下端分别保压,使PTFE复合材料性能有所提升。Hexagonal boron nitride(BN)-filled polytetrafluoroethylene(PTFE)composites with different pressing processes were prepared by mechanical blending with high-speed mixing,cold pressing molding and high temperature sintering processes.The mechanical performance of PTFE composites with different pressing processes was tested by universal tensile testing machine,and the breakdown strength of PTFE composites was tested by DSC-Ⅲhigh pressure test bench.The results showed that the tensile strength,elongation at break,breakdown strength and density uniformity of PTFE composites could be effectively improved by using the double sided pressing process with the same pressure maintaining time,and without unloading pressure for maintaining pressure;the tensile strength,breakdown strength and density distribution uniformity of PTFE composites were improved after prolonging the pressure maintaining time;compared to separately maintaining pressure at the upper and lower ends,the performance of PTFE composites was improved by simultaneously maintaining pressure.

关 键 词：灭弧喷口 聚四氟乙烯 压制工艺 材料性能 

分 类 号：TQ324[化学工程—合成树脂塑料工业]