Tribological performance of nano-Al2O3 reinforced polyamide 6 composites
Tribological performance of nano-Al2O3 reinforced polyamide 6 composites
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DOI：
10.1016/j.matlet.2006.01.042
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发表时间：
2006-09
影响因子：
3
通讯作者：
Li-xin Zhao;L. Zheng;Shushu Zhao
中科院分区：
文献类型：
--
作者：
Li-xin Zhao;L. Zheng;Shushu Zhao
采用原位聚合法制备了纳米Al2O3和微米Al2O3增强聚酰胺6复合材料（PA6/Al2O3）。采用MM-200块环磨损试验机测试了纳米颗粒含量和磨损条件对复合材料摩擦学性能的影响。利用扫描电镜和金相显微镜对磨损表面进行了分析，并提出了磨损机理。结果表明，纳米al2o3能提高单体铸造聚酰胺6的耐磨性，纳米al2o3的最佳含量约为3 wt.%。PA6/ al2o3纳米复合材料的磨损率低于微米级al2o3复合材料，且磨损率上升缓慢，摩擦系数随载荷的增加而逐渐降低。然而，复合材料的摩擦系数略大于单体铸造聚酰胺6的摩擦系数，低于微米Al2O3的摩擦系数。
Nano-Al2O3and micron Al2O3reinforced polyamide 6 composites (PA6/Al2O3) were prepared via in situ polymerization. The effects of nano-particle content and wear condition on the tribological properties of the composites were measured using a MM-200 block on ring wear tester. The worn surface was investigated with a scanning electronic microscope and a metallurgical microscope and the wear mechanism was proposed. It was found that nano-Al2O3improved the wear resistance of monomer casting polyamide 6 with the optimal content of nano-Al2O3being approximately 3 wt.%. The wear rate of PA6/Al2O3nano-composite was lower than that of the composite with micron Al2O3and increased slowly while its friction coefficient decreased gradually with load. However, the friction coefficient of the composite was somewhat larger than that of monomer casting polyamide 6 and lower than that of the composite with micron Al2O3.