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首页> 外文期刊>Journal of Applied Polymer Science >Wear properties and mechanisms of nylon and carbon-fiber-reinforced nylon in dry and wet conditions
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Wear properties and mechanisms of nylon and carbon-fiber-reinforced nylon in dry and wet conditions

机译：尼龙和碳纤维增强尼龙在干湿条件下的磨损性能和机理

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A microinjection machine was used to prepare specimens of nylon 1010 and carbon fiber (CF)-reinforced nylon 1010 composites. The friction and wear properties were investigated with a ring-block wear tester in wet and dry conditions. The wear rate of nylon 1010 increased, but the friction coefficient decreased in water in comparison to that in dry sliding. The wear resistance of CF-nylon increased remarkably by two orders of magnitude due to the reinforcement of the CF. The minimum wear rate was obtained with a 20 vol % content of CF filled in nylon in wet lubrication. The wear rate of CF-nylon in dry sliding friction was as much as approximately eight times, and the friction coefficient decreased to approximately half its value compared with that in water under a load of 200 N. The morphologies and the wear mechanisms of worn surfaces were also examined with Fourier transform infrared spectroscopy and scanning electron microscopy. The results show that the hydrolization of amide groups and the resulting decrease in hydrogen bonds between the molecules of nylon 1010 were important factors that led to a high wear rate of nylon in water. We concluded that the fiber, protruding out of the rubbing surface and carrying the main load between the contacting surfaces, held up the swelling properties and improved the mechanical strength of nylon, which would account for the evident reduction of wear in the nylon composites. (C) 2004 Wiley Periodicals, Inc.
机译：使用显微注射机制备尼龙1010和碳纤维（CF）增强的尼龙1010复合材料的样品。在潮湿和干燥条件下，使用环块磨损测试仪研究了摩擦和磨损性能。尼龙1010的磨损率增加，但与干式滑动相比，其在水中的摩擦系数下降。由于CF的增强，CF尼龙的耐磨性显着提高了两个数量级。在湿润滑条件下，将20％（体积）的CF填充在尼龙中，可获得最小磨损率。 CF尼龙在干式滑动摩擦中的磨损率约为8倍，在200 N的载荷下，其摩擦系数比在水中的摩擦系数降低至其一半。磨损表面的形貌和磨损机理还用傅里叶变换红外光谱和扫描电子显微镜检查。结果表明，酰胺基团的水解以及尼龙1010分子之间氢键的减少是导致尼龙在水中高磨损率的重要因素。我们得出的结论是，从摩擦表面伸出并承受接触表面之间的主要载荷的纤维保持了膨胀特性，并改善了尼龙的机械强度，这将明显降低尼龙复合材料的磨损。 （C）2004年Wiley Periodicals，Inc.

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