电子束辐照对UNMWPE树脂结构和力学性能的影响  

Effect of Electron Beam Radiation on the Structure and Mechanical Properties of Ultra High Molecular Weight Polyethylene Resins

作　　者：张建强[1] 周瑞敏[1] 林香凤[1] 高爱民[2] 

机构地区：[1]上海大学射线应用研究所,上海201800 [2]苏州大学辐照技术研究所,江苏苏州215200

出　　处：《高分子材料科学与工程》2010年第9期56-59,共4页Polymer Materials Science & Engineering

基　　金：上海市重点学科(第三期)资助(s30109)

摘　　要：研究了电子束辐照超高分子量聚乙烯(UHMWPE)树脂的交联现象,探讨了不同电子束辐照吸收剂量对UHMW-PE的微观结构、力学性能和溶胀度的影响。结果表明,辐照UHMWPE的最大拉伸强度、结晶度和交联度都随着吸收剂量的增大先增大后减小,分别在10kGy、50kGy和100kGy时达到最大值47.3MPa、54.4%和1.66×10-4mol/cm3;溶胀度(SR)和交联网链平均分子量(Mc)随吸收剂量增大先减小后变大;断裂伸长率随吸收剂量的增加而变小。Electron beam （EB） irradiation crosslinking of ultra high molecular weight polyethylene （UHMWPE） resins has been studied in this article. The influence of absorbed dose on the microstructure,mechanical properties and the swelling ratio of them has been discussed. The results show that the ultimate tensile stress,crystallinity and crosslinking density increase with increasing the dose initially and then decrease with increasing the dose. The maximums of them,47.3MPa 、54.4% and 1.66×10-4 mol/cm3,appear at 10kGy、50kGy and 100kGy respectively. The swelling ratio and average molecular weight between crosslinks （Mc） decrease with increasing the dose initially and then increase with increasing the dose. The failure elongation declines with increasing the dose.

关 键 词：电子束辐照 超高分子量聚乙烯树脂 溶胀度 结晶度 力学性能 

分 类 号：O644.22[理学—物理化学]