摘要
以3种聚乙烯(PE)管材专用料(PEX-1,PE100,PERT-I)为研究对象,在95℃下进行水浴老化试验,通过差示扫描量热仪(DSC)、维卡软化温度测定仪、万能试验机研究了其耐热氧老化性能、热变形行为和拉伸性能。结果表明:在95℃下水浴老化1 440 h后,3个样品中,PERT-I的结晶度变化率最小(2.16%),氧化诱导时间(OIT)变化率最小(2.70%),维卡软化温度变化率最小(0.28%),表现出优异的耐热氧老化性能和热变形性能,同时,PERT-I的拉伸强度变化率和屈服强度变化率分别为15.06%,15.16%,可作为耐高温PE管材内衬层的备选材料。
Three types of special material for polyethylene(PE)pipe(PEX-1,PE100,PERT-I)were used as research objects to conduct water bath aging tests at 95℃.Their thermal-oxydative aging property,thermal deformation behavior and tensile strength were studied using differential scanning calorimeter(DSC),Vicat softening temperature tester,and universal testing machine.The results show that after being aged in a water bath at 95℃for 1440 h,among the three samples,PERT-I has the smallest change in crystallinity(2.16%),the smallest change in oxidation induction time(OIT)(2.70%)and the smallest change in Vicat softening point temperature(0.28%),showing excellent heat and oxygen aging properties and thermal deformation properties.At the same time,the tensile strength change rate and yield strength change rate of PERT-I are 15.06%and 15.16%respectively,It can be used as an alternative material for the inner lining of high-temperature resistant PE pipes.
作者
高蔓彤
刘德俊
刘亚明
张阿昱
鲜林云
Gao Mantong;Liu Dejun;Liu Yaming;Zhang Ayu;Xian Linyun(Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods Co.,Ltd.,Xi’an,Shaanxi,710018;CNPC Baoji Petroleum Steel Pipe Co.,Ltd.,Baoji,Shaanxi,721008;Shaanxi Province Key Laboratory of High Performance Coiled Tubing,Baoji,Shaanxi,721008)
出处
《现代塑料加工应用》
CAS
北大核心
2024年第1期8-10,26,共4页
Modern Plastics Processing and Applications
基金
中国石油集团公司重大科技专项(2020E-2801J)。
关键词
聚乙烯
水浴老化
耐热氧老化性能
热变形行为
拉伸性能
polyethylene
water bath aging
thermal-oxydative aging property
thermal deformation behavior
tensile strength
