Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing
Wang, HL; Xu, L; Li, R; Hu, JT; Wang, MH; Wu, GZ; Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
2016
发表期刊RADIATION PHYSICS AND CHEMISTRY
ISSN0969-806X
卷号125期号:-页码:41—49
文章类型期刊文献
摘要Ultra-high molecular weight polyethylene (UHMWPE) sheet was cross-linked by gamma irradiation in air with a dose of up to 300 kGy at a dose rate of 5 kGy/h and further treated by post-annealing at 120 degrees C for 4 h in vacuum. Variations in chemical structure, thermostability, crystallinity, creep resistance, and tensile properties were investigated and compared mainly by gel content TGA, DSC, and creep and tensile measurements. Gel content measurements indicated that cross-linking was predominant over chain scission during irradiation and post-annealing. Radiation cross-linking resulted in an obvious improvement in the creep resistance and tensile properties of UHMWPE. Through cross-linking, the operational temperature and yield strength of the irradiated and subsequently annealed UHMWPE sheet were improved by more than 100 degrees C and 14%, respectively, at a dose of 300 kGy. Simultaneously, Young's modulus was increased to 1413 MPa, compared with 398 MPa of pristine UHMWPE. Annealing after irradiation further improved the creep resistance and Young's modulus. Highly cross-linked UHMWPE can even be maintained at 250 degrees C for a long time without any obvious deformation. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Molecular-weight Polyethylene Oxygen-induced Radicals Total Hip-arthroplasty Mechanical-properties Vitamin-e Tribological Properties Electron-beam Linked Uhmwpe Gamma-rays Wear
DOI10.1016/j.radphyschem.2016.03.009
收录类别SCI
语种英语
WOS记录号WOS:000377324200006
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25750
专题中科院上海应用物理研究所2011-2018年
通讯作者Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
推荐引用方式
GB/T 7714
Wang, HL,Xu, L,Li, R,et al. Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing[J]. RADIATION PHYSICS AND CHEMISTRY,2016,125(-):41—49.
APA Wang, HL.,Xu, L.,Li, R.,Hu, JT.,Wang, MH.,...&Wu, GZ .(2016).Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing.RADIATION PHYSICS AND CHEMISTRY,125(-),41—49.
MLA Wang, HL,et al."Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing".RADIATION PHYSICS AND CHEMISTRY 125.-(2016):41—49.
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