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题名:
Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing
作者: Wang, HL; Xu, L; Li, R; Hu, JT; Wang, MH; Wu, GZ
刊名: RADIATION PHYSICS AND CHEMISTRY
出版日期: 2016
卷号: 125, 期号:-, 页码:41—49
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
DOI: 10.1016/j.radphyschem.2016.03.009
通讯作者: Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
文章类型: 期刊文献
英文摘要: 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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000377324200006
ISSN号: 0969-806X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25750
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
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,2016-01-01,125(-):41—49.
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