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来源:百度知道 编辑:UC知道 时间:2024/06/14 04:06:34
本文论述了HA/UHMWPE复合材料的制备过程及其性能的分析。采用球磨法对HA/UHMWPE粉末进行了混合处理。采用热压成型的方法将混合好的粉末热压成坯体,然后裁切成拉伸试样和冲击试样,进行拉伸和冲击性能的测试。用X射线衍射仪对球磨后的粉末及热压成型后的试样进行物相分析,用SEM对粉末的形貌及试样的微观组织进行分析。结果表明,采用机械球磨和热压成型的方法成功地制备了HA/UHMWPE的复合材料。球磨可以使HA细化,UHMWPE粗化,同时可以使HA/UHMWPE混合粉末变得更加均匀,而不发生化学反应。热压成型后的样品,其微观组织呈UHMWPE包裹HA的网状结构,球磨时间越长,这种网状组织越均匀。HA/UHMWPE复合材料的力学性能随着球磨时间的增加呈上升趋势,球磨40h时,其拉伸强度最高。

This article discusses process of composite materials of the HA/UHMWPE and its performance analysis.
Use of the milling HA/UHMWPE powder were mixed treatment. By pressing the molding methods will be good powder mixed into a green body pressing, and then cut into tensile specimen samples and impact, tensile and impact of the test. X-ray diffraction of the milling and pressing the powder after forming the sample analysis carried out phase by SEM on the morphology of powder and the microstructure of the sample for analysis. The results showed that the use of mechanical milling and pressing method of forming the successful preparation of the HA/UHMWPE of composite materials. Milling can be refined so that HA/UHMWPE crude, at the same time so that HA/UHMWPE powder mixed become more uniform, without a chemical reaction. After pressing the molding samples, the microstructure of the HA package was UHMWPE network structure, the longer the milling time, this organization more homogeneou