碳纳米管改性涂层复合材料的制备设计及性能研究  

Preparation design and performance study of carbon nanotube modified coating composite materials

作　　者：马艾丽[1] 何晓红[1] 郭莹[1] 陈佳雨 祁滔 叶一鸣 文振兴 Ma Aili;He Xiaohong;Guo Ying;Chen Jiayu;Qi Tao;Ye Yiming;Wen Zhenxing(Beijing Institute of Technology,Zhuhai,Zhuhai 519088,Guangdong,China)

机构地区：[1]北京理工大学珠海学院,广东珠海519088

出　　处：《中国胶粘剂》2023年第9期16-20,26,共6页China Adhesives

基　　金：北京理工大学珠海学院大学生创新计划项目。

摘　　要：为了解决碳纳米管容易团聚且在聚合物基体中分散性差等问题,利用偶联剂将碳纳米管进行功能化处理,使得碳纳米管均匀地分散在水性环氧树脂中并形成一种理想的两相界面,充分发挥碳纳米管的优异性能,制备出一种性能优异的复合防腐涂层,并深入探究了其复合材料的力学特性、疏水性等。研究结果表明:通过傅里叶变换红外光谱和X射线衍射光谱仪分析,证实碳纳米管表面和偶联剂发生了化学反应,成功接枝;改性前当碳纳米管添加浓度达到5%时,开始发生明显团聚,而改性后分散效果明显提升,添加浓度在9%时才开始出现团聚;改性后碳纳米管对复合材料的附着力明显提升,优于未改性碳纳米管复合材料,但添加量不宜过大;改性对复合材料涂层的硬度没有削弱,复合材料涂层依然保持良好的力学性能。总之,改性碳纳米管添加到复合涂层中可以有效改善其综合性能,但添加量不宜超过9%。In order to solve the problems of carbon nanotubes easy to agglomerate and poor dispersion in polymer matrix,carbon nanotubes were functionalized by coupling agent to make carbon nanotubes uniformly dispersed in water-based epoxy resin and form an ideal two-phase interface,which fully exerted the excellent performance of carbon nanotubes,then the anti-corrosion composite coating with excellent performance was prepared.The mechanical properties,hydrophobicity,and other aspects of the composite material were deeply explored.The research results showed that through Fourier transform infrared spectroscopy and X-ray diffraction spectroscopy analysis,it was confirmed that the chemical reaction occurred between the surface of carbon nanotubes and the coupling agent,resulting in successful grafting.Before modification,when the concentration of carbon nanotubes reached 5%,significant agglomeration began to occur,while after modification,the dispersion effect was significantly improved,and agglomeration only began to occur when the concentration was 9%.The adhesion of modified carbon nanotubes to composite materials was significantly improved,which was superior to unmodified carbon nanotube composite materials,but the addition amount should not be too large.The modification did not weaken the hardness of the composite coating,and the composite coating still maintained good mechanical properties.In summary,adding modified carbon nanotubes to the composite coating could effectively improve its comprehensive performance,but the addition amount should not exceed 9%.

关 键 词：碳纳米管 防腐 复合材料 

分 类 号：TQ437[化学工程]