定向碳纳米管/丁苯橡胶复合材料的摩擦学各向异性行为研究  

Anisotropic behavior of frictional performance of aligned carbon nanotubes/styrene butadiene rubber composites

作　　者：王瑞林 瞿俊豪 黄海波[1] 陆伟强 沈东明 WANG Ruilin;QU Junhao;HUANG Haibo;LU Weiqiang;SHEN Dongming(School of Mechanical Engineering and Mechanics,NingboUniversity,Ningbo 315211,Zhejiang,China;Ningbo Tuopu Group Co.,Ltd.,Ningbo 315800,Zhejiang,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]宁波拓普集团股份有限公司,浙江宁波315800

出　　处：《材料工程》2024年第5期179-187,共9页Journal of Materials Engineering

基　　金：国家自然科学基金项目(51975300);中国(宁波)创新挑战赛优胜项目(2022T007)。

摘　　要：应用机械剪切诱导法制备定向碳纳米管/丁苯橡胶(CNTs/SBR)复合材料,研究碳管含量、定向性对复合橡胶材料力学特性和摩擦学特性的影响规律,分析这些结果产生的机理。结果表明:CNTs取向对SBR复合材料的摩擦学性能有显著影响。当CNTs-z垂直于摩擦界面和滑动方向,CNTs-z/SBR的力学、摩擦学性能均优于CNTs-x/SBR和CNTs-y/SBR。当CNTs平行于摩擦界面时,与滑动方向一致的CNTs-x/SBR力学性能优于与滑动方向垂直时的CNTs-y/SBR。CNTs-z可以提升橡胶复合材料的抗剪切性能,降低温升幅度和表面黏附作用,有效提升橡胶材料的摩擦学性能。载荷和速度工况下,摩擦因数与磨损量为负相关关系,即摩擦因数减小而磨损量增大,速度对摩擦学性能的影响大于载荷。研究结果可以为CNTs复合轮胎橡胶材料的摩擦学性能改善以及产业化应用提供科学参考。The oriented nanotubes reinforced styrene butadiene rubber(CNTs/SBR) composites were prepared by applying the mechanical shear induction method, and the laws of carbon tube content and orientation on the mechanical and tribological properties of the composite rubber materials were investigated. The mechanisms of these results were analyzed. The results show that the orientation of CNTs has a significant impact on the tribological properties of SBR composites. When CNTs-z are perpendicular to the friction interface and sliding direction, the mechanical and tribological properties of CNTs-z/SBR are superior to those of CNTs-x/SBR and CNTs-y/SBR. When CNTs are parallel to the friction interface, the mechanical properties of CNTs-x/SBR aligned with the sliding direction are better than those perpendicular to the sliding direction. CNTs-z can improve the shear resistance of rubber composites, reduce the magnitude of temperature rise and surface adhesion, and effectively improve the tribological properties of rubber materials. Under load and speed conditions, the friction coefficient and wear extent are negatively correlated. The friction coefficient decreases while the wear increases, and the effect of speed on tribological properties is greater than that of load. The research results can provide scientific references for improving the tribological properties and industrial application of CNTs composites tire rubber materials.

关 键 词：橡胶复合材料 定向碳纳米管 摩擦学性能 力学性能 

分 类 号：TB34[一般工业技术—材料科学与工程]