三维碳毡支撑型聚酰胺纳米复合材料的摩擦学行为  

Tribological Behavior of Three-Dimensional Carbon Felt-Supported Polyamide Nanocomposites

作　　者：潘炳力[1,2] 周毓璇 黄赛赛 贺学剑 刘敬超[2] 台玉萍[1] 马乐 王卓娅 赵龙[2] PAN Bingli;ZHOU Yuxuan;HUANG Saisai;HE Xuejian;LIU Jingchao;TAI Yuping;MA Le;WANG Zhuoya;ZHAO Long(Institute of Henan Polymer Composites,Henan University of Science and Technology,Henan Luoyang 471023,China;National United Engineering Laboratory for Advanced Bearing Tribology,Henan University of Science and Technology,Henan Luoyang 471023,China)

机构地区：[1]河南科技大学河南省高分子复合材料重点实验室,河南洛阳471023 [2]河南科技大学高端轴承摩擦学技术与应用国家地方联合工程实验室,河南洛阳471023

出　　处：《摩擦学学报》2023年第6期635-644,共10页Tribology

基　　金：国家自然科学基金(51675162)资助。

摘　　要：以碳毡(CF)为三维支撑材料,通过一步水热法将氧化石墨烯(GO)和石蜡(PW)负载到碳毡上制备CF/GO/PW三维润滑增强体,再通过原位聚合的方法制备聚酰胺/CF/GO/PW复合材料.对CF/GO/PW三维润滑增强体的微观形貌和复合材料的结构等进行表征测试,研究了纯聚酰胺6(MCPA6)及其复合材料的摩擦学性能和力学性能,以及GO与PW的比例对材料摩擦学性能的影响.研究发现GO与PW的质量比为1:3时,复合材料的摩擦学性能达到最佳水平,与纯聚酰胺相比,复合材料的摩擦系数和比磨损率分别降低了87%和73%,这是碳毡与基体界面性能的改善和GO/PW与CF一块起到协同增强润滑的结果;复合材料的拉伸模量和弯曲模量分别提高37%和155%,表明CF/GO/PW三维润滑增强体对复合材料具有明显的增强作用.Nanomaterials are widely used as interface reinforcing materials because of their unique structure,nano-size and excellent performances,which are always used to improve the interface bonding force.Graphene,as a twodimensional nanomaterial,has excellent mechanical strength,thermal conductivity,significant self-lubricating property and high bearing capacity,which has great potential in improving the tribological properties of polymers,and have been extensively applied in aero-space,automobile manufacturing,building engineering and other fields due to their excellent mechanical properties.Graphene oxide(GO)is a derivative with many oxygen-containing groups on its surface.It is thus characteristic of excellent solubility in both aqueous and organic solvents(amphiphilic).So Graphene oxide(GO)shows infinite prospects of application in composite materials,nanomaterials and friction materials.However,due to high filling and poor dispersion,the mechanical properties of the composites may deteriorate.Therefore,the 3D supported graphene can be constructed by using the supporting material as the reinforcement framework which can not only overcome the problems of graphene agglomeration and filler dispersion in the matrix,but also improve the mechanical properties of the material.In order to improve the tribological and mechanical properties of monomer cast nylon 6(MCPA6)composites,carbon felt(CF)was used as supporting materials,and graphene oxide(GO)and paraffin(PW)were used as fillers.We prepared the 3D lubrication reinforcement modified MCPA6 composites of CF/GO/PW.The mechanical and tribological properties of MCPA6 composites modified by corresponding 3D supported graphene lubrication reinforcers were investigated.The specific research contents and conclusions were as follows.In this paper,using CF as the 3D support material,the CF/GO/PW 3D lubricating reinforcement was prepared by one-step hydrothermal method to load GO and PW on the CF,and then MCPA6/CF/GO/PW composites were prepared by in-situ polymerization.After that,

关 键 词：聚酰胺复合材料 三维支撑 润滑增强体 摩擦磨损 协同作用 

分 类 号：TH117.1[机械工程—机械设计及理论]