Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing

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	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
刊名	RADIATION PHYSICS AND CHEMISTRY
	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
ISSN号	0969-806X
通讯作者	Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
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
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/25750]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
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.