摘要
[目的]旨在实现环氧丙烯酸酯乳液的高性能化改性,提升其在水性防腐涂料中的应用效果。[方法]在KH-550硅烷偶联剂的改性作用下,制备了由羧甲基壳聚糖(CMCS)与氧化锆(ZrO_(2))纳米粒子组成的复合材料CMCS/ZrO_(2),将其通过接枝共聚与环氧丙烯酸酯乳液中的环氧基团反应,得到CMCS/Zr O_(2)改性环氧丙烯酸酯乳液,并将其作为主要成膜物,制备了水性防腐涂料。通过X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)和扫描电镜(SEM)考察了CMCS/ZrO_(2)复合材料的相结构、官能团和表面形貌,对CMCS/ZrO_(2)改性环氧丙烯酸酯乳液干膜进行了水接触角测量、热重分析(TGA)及原子力显微镜(AFM)表征,测试了涂层的耐中性盐雾性能。[结果]CMCS/Zr O_(2)的加入提高了环氧丙烯酸酯乳液的热稳定性,改善了乳液干膜的光滑度,但不改变其亲水性。以环氧丙烯酸酯乳液作为主要成膜物制备的水性防腐涂料的防腐蚀性能因CMCS/ZrO_(2)的加入而显著提高。采用CMCS/ZrO_(2)添加量为1.0%(质量分数)的乳液所制成的水性防腐涂层具有最佳的力学性能及防腐蚀性能。[结论]CMCS/Zr O_(2)可有效改善环氧丙烯酸酯乳液的综合性能,基于其1.0%添加量所制得的改性乳液具备优异的热稳定性、成膜平滑性和防腐蚀性能,适用于高性能水性防腐涂料的制备,具有良好的应用前景。
[Objective]To achieve high-performance modification of epoxy acrylate emulsion and enhance its application effect in water-based anticorrosion coatings.[Method]A composite material consisting of carboxymethyl chitosan(CMCS)and zirconia(ZrO_(2))nanoparticles,designated as CMCS/ZrO_(2),was prepared under the modification of KH-550 silane coupling agent.The composite was reacted with the epoxy groups in an epoxy acrylate emulsion via graft copolymerization to obtain a CMCS/ZrO_(2)-modified epoxy acrylate emulsion,which was subsequently used as the main film-forming substance to prepare a water-based anticorrosion paint.The phase structure,functional groups,and surface morphology of the CMCS/ZrO_(2)composite were examined by X-ray diffraction(XRD),Fourier-transform infrared spectroscopy(FT-IR),and scanning electron microscopy(SEM).Dried films of the CMCS/ZrO_(2)-modified epoxy acrylate emulsion were characterized by water contact angle measurement,thermogravimetric analysis(TGA),and atomic force microscopy(AFM).The neutral salt spray resistance of the resulting coatings was also tested.[Result]The incorporation of CMCS/ZrO_(2)enhanced the thermal stability of the epoxy acrylate emulsion and improved the smoothness of its dried film without altering its hydrophilicity.The corrosion resistance of the water-based anticorrosion coating,formulated primarily with the epoxy acrylate emulsion,was significantly improved by the addition of CMCS/ZrO_(2).The water-based anticorrosion coating prepared from the emulsion with 1.0%(by mass)CMCS/ZrO_(2)exhibited the optimal mechanical properties and corrosion resistance.[Conclusion]CMCS/ZrO_(2)can effectively improve the comprehensive performance of epoxy acrylate emulsions.The modified emulsion with 1.0%of CMCS/ZrO_(2)shows excellent thermal stability,film smoothness,and corrosion resistance,making it suitable for the preparation of high-performance water-based anticorrosion coatings with promising application prospects.
作者
苗汝滨
毕崇浩
曲文娟
李少香
李厚为
刘猛
MIAO Rubin;BI Chonghao;QU Wenjuan;LI Shaoxiang;LI Houwei;LIU Meng(College of Environmental and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Shandong Furi Xuanwei New Materials Technology Co.,Ltd.,Weifang 261000,China)
出处
《电镀与涂饰》
北大核心
2026年第3期21-28,共8页
Electroplating & Finishing
基金
山东省重点研发计划(重大科技创新工程)项目(2022CXGC020401)
泰山产业领军人才工程资助项目(TSCY20231234)。
关键词
环氧丙烯酸酯乳液
羧甲基壳聚糖
纳米氧化锆
改性
防腐蚀
epoxy acrylate emulsion
carboxymethyl chitosan
zirconia nanoparticle
modification
anticorrosion
