文章摘要
Ti2CTx/超高分子量聚乙烯复合材料的制备及性能
Preparation and Properties of Ti2CTx/Ultrahigh Molecular Weight Polyethylene Composites
  
DOI:10.16865/j.cnki.1000-7555.2017.11.026
中文关键词: 超高分子量聚乙烯  二维层状Ti2CTx  复合材料  力学性能  摩擦学性能
英文关键词: UHMWPE  two-dimensional layered Ti2CTx  composites  mechanical property  tribological property
基金项目:国家自然科学基金资助项目(51205111, 51472075, 51275156); 河南省科技创新人才计划(134100510008)
作者单位
王晓龙1, 王李波1,2, 张 恒1, 申长洁1, 刘凡凡1, 周爱国1,2 1. 河南理工大学 材料科学与工程学院河南 焦作 4540032. 环境友好型无机材料河南省重点实验室培育基地河南 焦作 454003 
摘要点击次数: 37
全文下载次数: 
中文摘要:
      通过液相刻蚀三元层状陶瓷Ti2AlC制备了二维层状结构Ti2CTx,利用X射线衍射、场发射扫描电子显微镜、透射电子显微镜等对产物进行物相分析和微观结构表征。采用液相共混和热压成型法制备了不同Ti2CTx浓度的改性超高分子量聚乙烯(UHMWPE)复合材料,并考察了Ti2CTx层状纳米材料对复合材料断面形貌、热学性能、力学性能和摩擦学性能的影响。结果表明,Ti2AlC被剥离为纳米结构片层;层状Ti2CTx在UHMWPE基体中分散均匀且形成良好的结合界面;适量Ti2CTx纳米片的添加可提高UHMWPE的结晶度并改善基体的力学性能,当Ti2CTx质量分数为1.0%时,其弹性模量提高了将近80%;且得益于层状结构与聚合物的自润滑性的协同作用,Ti2CTx纳米片在高载荷下能显著提高UHMWPE的减摩性能
英文摘要:
      Two-dimensional layered Ti2CTx nanosheets were synthetized by liquid etching ternary layered ceramic Ti2AlC, the phase and morphology were characterized by XRD, FE-SEM and TEM. Besides, the Ti2CTx/UHMWPE composites with different amount of modified Ti2CTx were prepared by intermixing and hot-press moulding, the effects of Ti2CTx content on the fractured surface morphology, thermal, mechanical and tribological properties of the composites were investigated. As a result, Ti2AlC powders are exfoliated to nano-layered structure which are dispersed uniformly into the polymer matrix and formed good bonding interface. The degree of crystallinity increases and the mechanical properties are improved, especially, the elastic modulus increases by 80% when the mass fraction of Ti2CTx is 1.0%. The synergistic effect of nano-layered structure and self-lubrication of UHMWPE lead to better anti-frictional properties of the composites with higher load.
查看全文   查看/发表评论  下载PDF阅读器
关闭