ISSN   1004-0595

CN  62-1224/O4

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纳米氧化锆填充 U H MWP E人工髋臼的生物磨损行为研究

Biotribological Behavior of Ultra High Molecular Weight Polyethylene Composites Filled with Nano -ZrO2

  • 摘要: 采用热压工艺制备了超高分子量聚乙烯(UHMWPE ) /纳米氧化错(ZrO2 : )髋臼复合材料,利用UMT 试验机测试复合材料的硬度和剪切冲压性能,利用人工髋关节模拟磨损试验机考察了复合材料在小牛关节液润滑条件下的摩擦磨损性能结果表明,填充ZrO2 :提高UHMWP 复合材料的表面硬度?断裂载荷和断裂功,降低其磨损率ZrO2 / UHMWPE 复合材料的磨粒尺寸随着ZrO2 :含量的增加而升高UHMWP 复合材料耐磨性能与其大变形行为相关,复合材料的磨损率与大变形行为参数断裂载荷和断裂功呈反比线性关系

     

    Abstract: The artificial ?oint material of UHMWPE composite filled with nano –ZrO2 in different contests was prepared with a pressing formation method Hardness and shear punch behavior of ZrO2 / UHMWPE composites were measured with UMT tribo -tester Biotribological behavior of the composites was investigated with a hip joint simulator under lubrication of caU bovine synovial The experimental results indicated that nano –ZrO2 filler increased the hardness , frature load and fracture work of composites , and reduced the wear rate of the composite The sizes of the wear particles become larger as the ZrO2 contents increased The wear resistance of UHMWPE composites was influenced by their severe -deformation behavior A negative linear function was found between the wear rate and fracture load , fracture work

     

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