SiO_2/EP梯度耐磨复合涂层的制备及其性能研究  

Preparation and Properties of Graded SiO_2/EP Wear-resistant Composite Coating

作　　者：杨帆[1] 冯拉俊[1] 李光照[1] 罗宏[2] 翟哲[1] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048 [2]四川理工学院材料与化学工程学院,自贡643000

出　　处：《腐蚀科学与防护技术》2015年第5期454-458,共5页Corrosion Science and Protection Technology

基　　金：陕西省科技攻关项目(2014K08-38);材料腐蚀与防护四川省重点实验室项目(2014CL02);陕西省统筹创新工程项目(2014SZS09-Z01)资助

摘　　要：为改善共混法制备陶瓷/环氧树脂(EP)复合涂层时由于填料颗粒的大沉降现象而引起的涂层粘结性和耐磨性变差,将具有一定粒度分布的Si O2粉末利用喷粉的方法引入环氧树脂涂层,通过控制固化温度和时间来控制不同粒径Si O2颗粒在环氧树脂涂层中的沉降深度,制得了Si O2颗粒呈梯度分布的Si O2/EP复合涂层。研究了Si O2/EP梯度复合涂层的粘结性和耐磨性,探讨了Si O2/EP梯度复合涂层的形成机制。结果表明:不同粒径的Si O2颗粒在环氧涂层中可呈梯度分布,喷粉法制备的Si O2/EP复合涂层的粘结性与耐磨性均高于共混法制备的Si O2/EP复合涂层。To improve the over sedimentation of fillers, the poor adhesive strength and wear resistance of ceramic/epoxy （EP） composite coating, SiO2 powder with particle size of 5-50 μm was sprayed on the surface of liquid epoxy coating to let the particles settling naturally in the coating. The graded SiO2/EP composite coating was prepared by controlling the curing temperature and time and thereby the sedimentation depth of the SiO2 particles of different sizes. It follows that the adhesive strength and wear resistance of the SiO2/EP composite coating prepared by the new process is higher than that prepared by the traditional blending method.

关 键 词：静电喷涂 SiO2/EP 梯度涂层 耐磨涂层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]