加速老化方案对超高分子量聚乙烯粘弹性性能的影响。
Effect of an accelerated aging protocol on viscoelastic properties of UHMWPE.
作者信息
Lewis Gladius
机构信息
Department of Mechanical Engineering, The University of Memphis, TN 38152-3180, USA.
出版信息
Biomed Mater Eng. 2002;12(3):299-308.
The values of two viscoelastic properties (storage modulus and loss angle) of four sets of ultra-high-molecular-weight polyethylene specimens were obtained. Two sets comprised specimens that had been sterilized (using gamma radiation in air or ethylene oxide gas) while the other two sets comprised specimens that were sterilized and then exposed to an accelerated aging protocol that, in the literature, has been proposed as simulating 5 years of real-time shelf aging. An analysis of the present results from the four specimen sets and those obtained, in a previous study by the present author, on specimens machined from real-time shelf aged tibial inserts suggests that the claim made for the accelerated aging protocol may be conservative.
获得了四组超高分子量聚乙烯样本的两种粘弹性特性（储能模量和损耗角）的值。两组样本是经过灭菌处理的（在空气中使用伽马辐射或环氧乙烷气体），而另外两组样本是经过灭菌处理后再接受加速老化方案，在文献中，该方案被提议用于模拟5年的实际货架期老化。对这四组样本的当前结果以及作者在之前的一项研究中对从实际货架期老化的胫骨植入物加工而成的样本所获得的结果进行分析表明，关于加速老化方案的说法可能较为保守。
Zotero 插件