6、而且,因为加载波形、相位差、加载率和保持时间等影响因素,试样呈现出不同的棘轮累积应变和应变率。关键词:超高分子量聚乙烯,羟基磷灰石,蠕变回复,分析模型,棘轮Ⅰ万方数据AbstractUltra-high molecular weight polyethylene (UHMWPE)has been successfully used as a bearing material in prosthetic replacement for joint for over five decades, owing
7、 to its unique mechanical properties.Whilethe weakness of the artificial joint friction pairsresult insome problems during clinical application, such as delamination, cracking and loosening, which will affect its service life.In this study, 0, 5, 10and
8、20wt.%hydroxyapatite (HA)and UHMWPE powders were homogeneously compounded and consolidated under hot press, then a series of mechanical tests were conducted to investigatethe contribution of HAparticles to the mechanical properti