磷酸酯水性带锈防锈丙烯酸酯乳液的合成与性能

发布时间：2018-02-20 14:46

本文关键词： 碳钢水性带锈乳液丙烯酸酯转锈剂没食子酸磷酸酯半连续种子乳液聚合耐蚀性　出处：《电镀与涂饰》2017年02期 　论文类型：期刊论文

【摘要】：用没食子酸为原料合成了有机肟类铁锈转化剂,以五氧化二磷为磷酸化试剂合成了具有抗闪锈作用的磷酸酯功能单体,之后通过半连续种子乳液聚合法,将它们与丙烯酸丁酯、甲基丙烯酸甲酯等混合制备了水性带锈防锈乳液。通过盐水浸泡试验和在不同p H条件的3.5%Na Cl溶液中的电化学测试考察了其涂膜对碳钢的保护作用。通过红外光谱仪、扫描电镜、能谱仪表征了锈蚀钢板、转锈剂干燥膜和水性带锈乳液固化膜,以讨论对锈的转化作用。结果显示,介质的p H越高,涂膜的耐蚀性越好。转锈剂可有效转化锈蚀。当转锈剂用量为配方总量的4%时,乳液的凝胶含量最少,涂膜耐盐水腐蚀时间最长,附着力1级,综合性能最好。
[Abstract]:Organic oxime rust converters were synthesized from Gallic acid and phosphorylated phosphate monomers with diphosphate pentoxide as phosphorylation reagent were synthesized. Then they were treated with butyl acrylate by semicontinuous seed emulsion polymerization. The waterborne rust-proof emulsion was prepared by mixing methyl methacrylate and so on. The protective effect of the coating on carbon steel was investigated by immersion test in brine and electrochemical test in 3.5 NaCl solution under different pH conditions. Scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) were used to characterize the corrosion steel plate, the rust transfer agent drying film and the waterborne rust emulsion curing film to discuss the transformation of rust. The results showed that the higher the pH of the medium was, The better the corrosion resistance of the film is. The rust transfer agent can effectively transform rust. When the amount of the rust transfer agent is 4% of the total formula, the gel content of the emulsion is the least, the corrosion resistance of the film is the longest, the adhesive force is grade 1, and the comprehensive performance is the best.
【作者单位】：陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室;
【分类号】：TG174.4;TQ637

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