摘要
研究了P457氟橡胶、VPL85540氟醚橡胶、PFR 95HT全氟醚橡胶三种生胶的性能及其混炼胶的硫化特性、低温性能、力学性能、耐热空气老化性能、耐介质性能、压缩永久变形性能等。结果表明,相同配方及工艺下,三种含氟橡胶材料由于生胶分子结构不同,性能上存在较大差异。VPL85540氟醚橡胶低温性能最佳,力学性能最差;PFR 95HT全氟醚橡胶在耐高温老化和耐介质方面表现最佳,低温性能最差。在压缩永久变形方面,低于200℃时P457氟橡胶和VPL85540氟醚橡胶的表现优于PFR 95HT全氟醚橡胶;高于250℃时,PFR 95HT全氟醚橡胶由于大分子优异的耐高温性能,其高温压缩永久变形最低。
Properties of three raw rubbers and compounds of P457 fluoroelastomer,VPL85540 fluoroelastomers and PFR 95HT perfluoroelastomer were investigated,including vulcanization performance,low temperature performance mechanical properties,hot-air aging resistance,oil resistance,and compression set,etc.The three fluorin-containing rubbers with the same recipe and process showed different properties due to their different molecular structures.VPL85540 low-temperature fluoroelastomers behaved the best low-temperature resistance,but the least mechanical performance.PFR 95HT perfluoroelastomer had the best hot-air aging resistance and oil resistance,but the worst low-temperature resistance.The compression set below 200℃of PFR 95HT was higher than those of P457 and VPL85540.The compression set above 250℃of PFR 95HT was the lowest owing to the excellent heat-resistance of its molecular structure.
作者
王珍
陆明
杨睿
孙霞容
蒋洪罡
刘金岭
WANG Zhen;LU ming;YANG Rui;SUN Xiarong;JIANG Honggang;LIU Jinling(Beijing Institute of Aeronautical Materials,AECC,Beijing 100095,China)
出处
《弹性体》
CAS
2020年第4期26-32,共7页
China Elastomerics
基金
国家自然科学基金项目(21991125)。
关键词
含氟橡胶
低温性能
力学性能
热空气老化性能
耐油性能
压缩永久变形
fluorin-containing rubber
low-temperature resistance
mechanical property
hot-air aging resistance
oil resistance
compression set
