The aim of this study was to prepare stable waterborne epoxy emulsions and study the properties of their corresponding coatings containing different contents of silica nanoparticles. For this purpose and in the first step, the stabilizing effect of various amounts of an acrylate terpolymer latex (poly (methyl methacrylate-co-butyl acrylate-co-acrylic acid)) and a non-ionic emulsifier (nonyl phenol ethoxylates 20 emulsifier (known as Kenon 20)) on waterborne epoxy emulsions was explored. The results indicated that the emulsion containing 5 wt.% latex and 6 wt.% Kenon 20 (EK6A5) was the most stable. In the next step, silica nanoparticles with 1, 2, 3, and 4 wt.% were added to EK6A5 emulsion. It was found that addition of nanoparticles up to 3 wt.% improved the stability. Finally, the pure and nanoparticle contained emulsions were coated on a steel substrate and their adhesion performance, pencil hardness, surface wettability, and wear and corrosion resistance were investigated. The comparison between the samples with and without silica nanoparticles revealed enhanced properties such as adhesion strength (up to 5B), wear resistance, corrosion resistance (degree of blistering up to 8 F and mean rust creepage up to 10), and increased contact angle (up to 63°), by addition of proper amounts of silica nanoparticles (up to 3 wt.%).

这项研究的目的是制备稳定的水性环氧乳液，并研究其包含不同含量的二氧化硅纳米粒子的相应涂层的性能。为此目的，在第一步中，应使用各种量的丙烯酸酯三元共聚物胶乳（聚（甲基丙烯酸甲酯-丙烯酸丁酯/丙烯酸-共丙烯酸））和非离子型乳化剂（壬基酚乙氧基化物20乳化剂（探索了在水性环氧乳液上被称为Kenon 20））的方法。结果表明，包含5重量％的胶乳和6重量％的Kenon 20（EK6A5）的乳液是最稳定的。在下一步中，将具有1、2、3和4 wt。％的二氧化硅纳米粒子添加到EK6A5乳液中。已发现添加至多3重量％的纳米颗粒改善了稳定性。最后，将纯的和含纳米颗粒的乳液涂布在钢基材上，并研究了它们的粘合性能，铅笔硬度，表面润湿性以及耐磨性和耐腐蚀性。具有和不具有二氧化硅纳米颗粒的样品之间的比较显示出增强的性能，例如粘合强度（高达5B），耐磨性，耐腐蚀性（起泡度高达8 F和平均锈蚀率高达10）和增加的接触角（通过添加适量的二氧化硅纳米粒子（最高3 wt。％）达到63°）。