三元层状陶瓷Ti<sub>3</sub>AlC<sub>2</sub>/超高分子量聚乙烯复合材料的制备及性能

张恒; 王李波; 戴亚辉; 申长洁; 周爱国; 曹新鑫

doi:10.13801/j.cnki.fhclxb.20160907.004

三元层状陶瓷Ti₃AlC₂/超高分子量聚乙烯复合材料的制备及性能

河南理工大学材料科学与工程学院, 焦作 454003

基金项目: 国家自然科学基金（51205111；51472075；51275156）；河南省科技创新人才计划（134100510008）

详细信息

通讯作者:
王李波,博士,副教授,硕士生导师,研究方向为纳米及纳米复合材料E-mail:wanglibo537@hpu.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2016-06-29
- 修回日期: 2016-08-31
- 刊出日期: 2017-06-14

Preparation and performances of ternary layered ceramic Ti₃AlC₂/ultrahigh molecular weight polyethylene composites

School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China

摘要

摘要: 为了增强超高分子量聚乙烯（UHMWPE）的性能，研究采用表面改性的Ti₃AlC₂填充UHMWPE，通过热压成型制备了Ti₃AlC₂/UHMWPE复合材料。采用SEM观察复合材料的微观结构，表明Ti₃AlC₂均匀分散在UHMWPE基体中，表面处理后的填料与基体界面熔合较好；热分析结果表明，Ti₃AlC₂的添加降低了UHMWPE的结晶度和结晶热焓，同时提高了聚合物的热传导性；DMA分析结果表明，添加Ti₃AlC₂有效地提高了Ti₃AlC₂/UHMWPE复合材料的抗蠕变性能，得益于无机粒子改善了复合材料的硬度和刚性，提高了复合材料抗外界应力变形能力；摩擦学性能分析表明，适量的Ti₃AlC₂（质量分数≤15wt%）填充UHMWPE能有效提高复合材料的减磨抗摩性能，同时磨痕表面形貌分析结果表明，Ti₃AlC₂/UHMWPE复合材料的摩擦磨损机制由粘着磨损向磨粒磨损转变。
- 超高分子量聚乙烯 /
- Ti₃AlC₂ /
- 聚合物基复合材料 /
- 蠕变 /
- 摩擦磨损
Abstract: In order to improve the performances of ultrahigh molecular weight polyethylene (UHMWPE), surface modification of Ti₃AlC₂ filled UHMWPE was studied. Ti₃AlC₂/UHMWPE composites were prepared by hot-press moulding technique. SEM results show that Ti₃AlC₂ distributes homogeneously in the matrix and the modified fillers have a better boundary integrate with the polymer matrix. Thermal analysis results show that the crystallinity and enthalpy of Ti₃AlC₂/UHMWPE composite decreases with the addition of Ti₃AlC₂, while the thermal conductivity of the composites increases. DMA results show that Ti₃AlC₂ improves the creep performence of Ti₃AlC₂/UHMWPE composites effectively, which is benefited from the increase of hardness and rigidity of the polymer matrix and the capability of resistance to deform under external stress is enhanced. Additionally, tribology analysis shows that the right amount of Ti₃AlC₂ (mass fraction≤15wt%) filled UHMWPE can improve the anti-friction performance of the composites effectively, while the worn surface morphology analysis of Ti₃AlC₂/UHMWPE composites shows that the friction and wear mechanism of the composite transform from adhesive wear to abrasive wear.
- ultrahigh molecular weight polyethylene /
- Ti₃AlC₂ /
- polymer-matrix composite /
- creep /
- friction and wear

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