基于仿生的增韧环氧树脂的冲蚀磨损特性研究  

Erosion Wear Characteristics of Epoxy Resin Composites Based on Texture Surface

作　　者：徐林红[1] 沈东 杨皓 卢禄华 邓州州 XU Linhong;SHEN Dong;YANG Hao;LU Luhua;DENG Zhouzhou(Faculty of Mechanical&Electrical Information,China University of Geosciences(Wuhan),Wuhan 430074,China;Xiamen San-vision Clean Technology Co.,Ltd.,Fujian Xiamen 361101,China)

机构地区：[1]中国地质大学(武汉)机械与电子信息学院,武汉430074 [2]厦门三烨清洁科技股份有限公司,福建厦门361101

出　　处：《表面技术》2024年第13期118-127,138,共11页Surface Technology

基　　金：国家自然科学基金(22078296)。

摘　　要：目的针对钾盐输送过程中钾盐颗粒对设备造成的冲蚀磨损问题,以及具有较好可溶性和吸湿性的钾盐易黏附于金属设备,从而造成的腐蚀和堵塞问题,将耐冲蚀磨损、耐腐蚀的高分子复合材料与耐冲蚀磨损仿生结构相结合对冲蚀关键零件进行设计,以提高散料输送过程中相关部件表面的耐冲蚀磨损性能和防黏附性能。方法利用自备的疏水二氧化硅对环氧树脂进行增韧处理,结合贝壳表面肋条结构及鲨鱼表皮盾鳞的特殊排列方式对冲蚀表面进行仿生设计,再利用翻模法在增韧环氧树脂表面制备耐冲蚀仿生结构,完成接触角的测量,以及表面耐磨性、表面硬度、耐冲蚀磨损性能等测试,探究疏水二氧化硅颗粒质量分数、仿生结构对环氧树脂综合性能的影响。结果增加疏水二氧化硅的含量,可以提高试样的疏水性;相较于无仿生结构试样,贝壳/鲨鱼复合仿生结构试样的耐磨性能更强,其质量损失率由0.22%降至0.072%。同时,在疏水二氧化硅的质量分数为4%时,冲蚀率最低,仅为1.4%。结论疏水二氧化硅的质量分数为4%的增韧环氧树脂贝壳/鲨鱼仿生结构试样的综合性能最优,其疏水性、耐磨性、耐冲蚀性能均得到提升。In the process of potassium salt transportation,due to the long-term impact of potassium salt to some transportation tanks,pipelines and other areas,it is very easy to produce erosion and wear.In the transportation process,the way of spraying saturated brine is used to remove dust,but due to the hygroscopicity of potash itself,it may cause the potash to adhere to the surface of the machine,leading to clogging easily.In addition,it will also form a microcell with the surface of the metal equipment,causing electrochemical corrosion on the surface of the transportation equipment.Although surface painting is also used to protect the surface of the transportation equipment,but this is not enough to meet the demand.At present,the special mining and transportation equipment and process of potash are still in the exploratory stage,so most of the commonly used potash mining and transportation equipment is inherited from coal mine machinery.Therefore,in order to obtain a wear-resistant protective layer and prevent the blockage and corrosion caused by the adhesion of potash salt,the work aims to select the corrosion-resistant and highly chemically stable epoxy resin as the surface material subject to erosion,and utilize the homemade silica particles to increase the strength,toughness,and ductility of the epoxy resin in order to overcome the hard and brittle characteristics of the epoxy resin,and at the same time,improves its hydrophobicity to avoid the adhesion of potash salt,and combine with the surface bionic technology to further improve the erosion-resistant performance of the material.The erosion resistance of the material is further improved by combining the surface bionic technology.The hydrophobic SiO2 particles were prepared by sol-gel method with high concentration of ammonia or polymers as catalysts through the co-hydrolysis polycondensation reaction between ethyl acetate orthosilicate and methyltriethoxysilane.A certain amount of epoxy resin was taken at 60℃with an electric stirrer for 5 minutes(speed of 60 r/

关 键 词：冲蚀磨损 仿生结构 增韧环氧树脂 疏水二氧化硅 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]