“核-壳”微胶囊改性碳纤维树脂基摩擦材料的性能研究  

Study on the properties of“core-shell”microcapsule modlified carbon fiber resinbased friction materials

作　　者：朱文婷[1] 王小荣[1] 惠瑞敏 王晓芳[1] ZHU Wen-ting;WANG Xiao-rong;XI Rui-min;WANG Xiao-fang(College of Chemistry and Chemical Engineering,Xianyang Normal University,Xianyang 712000,China)

机构地区：[1]咸阳师范学院化学与化工学院,陕西咸阳712000

出　　处：《化学工程师》2022年第12期1-4,共4页Chemical Engineer

基　　金：陕西省教育厅专项科研计划项目(No.21JK0964);咸阳师范学院专项科研基金项目(No.XSYK18005);咸阳师范学院“青年骨干教师”培养项目(No.XSYGG201607)。

摘　　要：为了进一步提高树脂基复合材料在使用中的安全性和使用寿命,本文引入一种具有自修复性能的微胶囊,以修复粘结产生的微裂纹,从而改善材料的摩擦学性能。通过界面聚合法,以脲醛树脂为囊壁,环氧树脂为囊芯材料,制备微胶囊,并分析乳化剂的用量对微胶囊产率和囊芯率的影响;采用SEM观察微胶囊的微观形貌、FTIR表征化学组分;研究微胶囊的加入对复合材料摩擦磨损性能的影响规律。实验结果表明,制备微胶囊直径为40~60μm、壁厚为2~3μm的粗糙球体;乳化剂的优化用量为14mmol时,微胶囊的产率为67.5%,囊芯率为64.88%;当微胶囊的添加量为5%时,复合材料的平均摩擦系数为0.141,比未添加时提高了19%,磨损率明显降低了40%,表明微胶囊技术能够较好地改善复合材料的摩擦性能。In order to further improve the safe usage and service life of carbon fiber/resin composites,a self-healing microcapsule was introduced to repair the micro-cracks caused by weak bonding during friction process,resulting in the improvement of the tribological properties.In this work,the urea-formaldehyde resin coated epoxy resin microcapsules were prepared by the interfacial polymerization method.The effect of the emulsifier amount on microcapsule yield and core rate were analyzed;SEM was used to observe the micromorphology of microcapsules and the chemical components were characterized by FTIR;by introduction of microcapsules,the friction and wear properties of composites were studied.The experimental results show that rough spheres with diameters of 40~60μm and wall thickness of 2~3μm were successfully prepared.The optimal emulsifier content was14 mmol,the yield of microcapsules was 67.5%and the core rate was 64.88%.When the amount of microcapsule is 5%,the average friction coefficient of the composite was 0.141,increased by 19%compared to the composite without microcapsule;and the wear rate was decreased by 40%,which indicates that microcapsule could better improve the friction properties of the composite.

关 键 词：树脂基复合材料 碳纤维 微胶囊 摩擦磨损性能 

分 类 号：TB332[一般工业技术—材料科学与工程]