• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >In situ fabrication of CuO/UHMWPE nanocomposites and their tribological performance
【24h】

In situ fabrication of CuO/UHMWPE nanocomposites and their tribological performance

机译：在CuO / UhmWPE纳米复合材料的原位制造及其摩擦学性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Polymer nanocomposites present remarkably enhanced mechanical and tribological properties with respect to their matrices even at a low loading of nanofillers. Here, cupric oxide (CuO) nanoparticles (nano-CuO) were in situ filled into ultra-high-molecular-weight polyethylene (UHMWPE) to inhibit a possible agglomeration encountered in the preparation by mechanical mixing. The filled CuO nanoparticles were highly dispersed in UHMWPE with a reliable interface combination. The CuO nanoparticles in the matrix play a role for heterogeneous nucleation, resulting in an enhancement in degree of crystallinity of UHMWPE. The elastic modulus and the elongation at break of the nanocomposites also presented an improvement, indicating a good compatibility between the nano-CuO and the matrix. The average sliding friction coefficient of UHMWPE against 45(#) steel was reduced by up to 34% after the in situ filling of CuO nanoparticles, and the wear mechanism was found to transform from adhesive to fatigue wear after the introduction of nano-CuO. It is concluded that the in situ filling can improve the dispersion of CuO nanoparticles in UHMWPE, and markedly promote the mechanical properties and tribological performance of UHMWPE. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47925.
机译：即使在低负载的纳米填充物的低负载下，聚合物纳米复合材料也具有相对于它们的基质具有显着增强的机械和摩擦学特性。这里，氧化铜（CuO）纳米颗粒（Nano-CuO）原位填充到超高分子量聚乙烯（UHMWPE）中以抑制通过机械混合制备中遇到的可能的附聚。用可靠的界面组合，填充CuO纳米颗粒高度分散在UHMWPE中。基质中的CuO纳米颗粒在非均相成核的作用起作用，导致UHMWPE的结晶度的增强。弹性模量和纳米复合材料断裂的伸长率也提出了一种改进，表明纳米CuO和基质之间的良好相容性。在CuO纳米粒子的原位填充后，UHMWPE与45（＃）钢的平均滑动摩擦系数降低了高达34％，并且发现磨损机理在引入纳米CuO后从粘合剂转化为疲劳磨损。结论是，原位填充可以改善CuO纳米粒子在UHMWPE中的分散，并显着促进UHMWPE的机械性能和摩擦学性能。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47925。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号