纳米Fe_3O_4负载石墨烯/BMI树脂基复合材料的摩擦学性能  

Tribological properties of Nano-Fe_3O_4-coated graphene/bismaleimide (BMI) resin matrix composites

作　　者：刘超[1] 董雨菲 颜红侠[3] 林阳 马建中 LIU Chao;DONG Yu-fei;YAN Hong-xia;LIN Yang;MA Jian-zhong(Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology,Shaanxi University of Science & Technology,Xi′an 710021,China;College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science & Technology,Xi′an 710021,China;School of Science,Northwestern Polytechnical University,Xi′an 710129,China)

机构地区：[1]陕西科技大学轻化工助剂化学与技术协同创新中心,陕西西安710021 [2]陕西科技大学轻工科学与工程学院,陕西西安710021 [3]西北工业大学理学院,陕西西安710129

出　　处：《陕西科技大学学报》2019年第3期103-111,123,共10页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基础研究计划项目(2018JQ5211);陕西省教育厅专项科研计划项目(18JK0102)

摘　　要：采用化学共沉淀法制备出类球状Fe_3O_4负载石墨烯(GNS-npFe_3O_4)和棒状Fe_3O_4负载石墨烯(GNS-nrFe_3O_4),研究了两种形貌的GNS-Fe_3O_4杂化粒子及其与双马来酰亚胺(BMI)树脂形成的复合材料的摩擦学性能.结果表明,GNS-Fe_3O_4对于BMI树脂具有明显的减摩、抗磨效果.相比于GNS-nrFe_3O_4,GNS-npFe_3O_4在石蜡油体系中展现出更低的摩擦系数和自润滑性,而且其BMI复合材料耐磨性更高.但是,由于较大尺寸的粒子更易在摩擦过程中从基体析出,因而GNS-nrFe_3O_4/BMI相比于GNS-npFe_3O_4/BMI复合材料具有更低的摩擦系数.This contribution presents the preparation and the tribological properties study of two kinds of nano-Fe3O4-coated graphene/bismaleimide(BMI)resin composites differing in morphology of Fe3O4 nanoparticles.The graphene nanosheets coated with spheroidal Fe3O4 nanoparticles(GNS-npFe3O4)and rod-like Fe3O4 nanoparticles(GNS-nrFe3O4)were prepared by a methodology based on chemical coprecipitation.The friction and wear tests were conducted upon both the prepared GNS-Fe3O4 hybrid particles and the corresponding BMI resin composites.Our experiment confirmed the excellent antifriction and antiwear effect of GNS-Fe3O4 for BMI resin.Compared with GNS-nrFe3O4,the GNS-npFe3O4 exhibits a lower friction coefficient and a self-lubricating characteristic within paraffin oil system,and its BMI composite is more resistant to wear.On the other hand,GNS-nrFe3O4/BMI composites have a lower coefficient of friction than those of GNS-npFe3O4/BMI composites,which can be attributed to the higher precipitation tendency of GNS-nrFe3O4 during the friction process for its larger particle size.

关 键 词：聚合物基复合材料 石墨烯 双马来酰亚胺树脂 FE3O4纳米粒子 形貌 摩擦学性能 减摩抗磨 

分 类 号：TB332[一般工业技术—材料科学与工程]