Gr-PA66-POB复合涂层的制备及其摩擦学性能  

Preparation and tribological properties of the Gr-PA66-POB composite coatings

作　　者：王建[1] 唐超[1] 王沁梅 于素华[1] 赵宇[3] 胡效亚[1] 

机构地区：[1]扬州大学化学化工学院,江苏扬州225009 [2]西安交通大学电气工程学院,西安710049 [3]重庆安全技术职业学院安全工程系,重庆万州404020

出　　处：《扬州大学学报（自然科学版）》2013年第4期31-34,50,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(21075107)

摘　　要：采用氧化-分散-还原法制备十八胺修饰的石墨烯(graphene,Gr),再以烧结法成功制备石墨烯(Gr)-聚酰胺(polyamide66,PA66)-聚苯酯(polyoxybenzoate,POB)复合固体润滑涂层,并通过环块磨损实验考察了该复合涂层的摩擦学性能.结果表明:1)Gr-PA66-POB的耐磨寿命显著高于PA66-POB涂层,当w(Gr)=25%时,其耐磨性能最佳,磨损率比不添加Gr时低31%;2)不同w(Gr)下复合涂层的失效模式:w(Gr)≤15%时,以黏着磨损和犁沟磨损为主;w(Gr)=20%时,以塑性变形和犁沟磨损为主;w(Gr)=25%时,表现为轻微的犁沟磨损;w(Gr)=30%时,主要表现为疲劳磨损.Octadecylamine-modified graphene （Gr） is prepared by an oxidation-dispersion-reduction process and fabricated composite coatings of polyoxybenzoate Gr-polyamide （PA66）-POB are obtained through a sintering process. The tribological properties of the composite coatings are investigated by the ring on block wear test on a MRH-3 machine. The results show that the abra- sion resistance of the composite coatings is significantly better than the POB-PA66 coating. The optimum mass fraction of graphene in composite is 25 %. The wear rate of Gr-PA66-POB including 25% Gr is 31% lower than that of POB-PA66 coating. The main failure mode is adhesive and plou- ghing wear while the Gr content is less than 15~. When the coating Gr content is 20%, the failure mode is slight plastic deformation and ploughing wear. When the Gr content is 25%, the failure mode is mainly slight furrow. However, while the mass fraction of Gr in the composite coating is 30%, fatigue wear is the main failure mode.

关 键 词：聚苯酯I聚酰胺 石墨烯 固体润滑 复合涂层 

分 类 号：O613.71[理学—无机化学] O631.2[理学—化学]