摘要
对两种采用不同工艺生产的PE100级管材专用树脂(分别记作树脂A和树脂B)进行了结构剖析和管材加工性能评价。结果表明:与树脂A相比,树脂B的共聚单体含量少,重均分子量大,相对分子质量分布略窄,结晶度高,零剪切黏度高,熔体强度大;相同加工温度条件下,树脂A的加工流动性好,树脂B的抗熔垂性好;两种树脂所制管材的静液压强度、耐慢速裂纹增长性能与耐快速裂纹扩展性能均满足国家标准要求。
The structure and processing performance of PE100pipe materials(A and B)fabricated by twodifferent processes were evaluated respectively.The results show that B has less comonomer content,narrowermolecular weight distribution,higher crystalinity,weight-average molecular weight,zero shear viscosity andmelt strength than A does;A performs better in processability and B in sag resistance at the same processingtemperature;the hydrostatic strength,resistance to slow crack growth and rapid crack propagation of bothmaterials meet the requirements of national standards.
作者
关莉
胡斌
朱军
席军
缪江
Guan Li;Hu Bin;Zhu Jun;Xi Jun;Miu Jiang(Research Institute of Dushanzi Petrochemical Co.,Karamay 833699,China;Xinjiang Laboratory of Rubber-plastics Materials,Karamay 833699,China)
出处
《合成树脂及塑料》
CAS
北大核心
2017年第1期70-72,80,共4页
China Synthetic Resin and Plastics
关键词
管材专用树脂
共聚单体
流变性能
相对分子质量及其分布
pipe material
comonomer
rheological property
relative molecular mass and its distribution
