丙烯酸十二酯用量对PA乳液防腐性能的影响  

Effect of Dodecyl Acrylate Dosage on Corrosion Resistance of PA Emulsion

作　　者：林绮欣 张天 桂雪峰 许凯[1] LIN Qi-xin;ZHANG Tian;GUI Xue-feng;XU Kai(Guangzhou Institute of Chemistry,Chinese Academy of Sciences,CAS Engineering Laboratory for Special Fine Chemicals,Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics,Guangzhou 510650,China;CASH GCC Shaoguan Research Institute of Advanced Materials,Nanxiong 512400,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院广州化学研究所,中国科学院新型特种精细化学品工程实验室,广东省电子有机聚合物材料重点实验室,广东广州510650 [2]国科广化韶关新材料研究院,国科广化精细化工孵化器(南雄)有限公司,广东南雄512400 [3]中国科学院大学,北京100049

出　　处：《广州化学》2023年第1期64-69,共6页Guangzhou Chemistry

基　　金：广州市科技计划项目(202102021194);广州市科技计划项目(201902010063)。

摘　　要：在现有核壳乳液聚合法基础上,改进聚合工艺制备具有不同丙烯酸十二酯(LMA)含量的水性丙烯酸乳液,讨论不同LMA含量对涂层性能的影响,并通过盐水浸泡实验、电化学阻抗研究量化涂膜的防腐性能。结果表明,核聚合阶段增加LMA用量有利于提高涂层的防腐性能。配方L16经过长期的3.5%(wt)盐水浸泡后,阻抗值仍有5.04900×10^(6)Ω·cm^(2),L16树脂乳液成膜涂层防腐性能最佳。Based on the existing core-shell emulsion polymerization method, an aqueous acrylic emulsion with different contents of lauryl acrylate(LMA) was prepared by improving the polymerization process, and the influence of different LMA contents on the coating properties was discussed. Chemical impedance studies quantify the corrosion resistance of coatings. The results show that increasing the amount of dodecyl acrylate monomer in the process of nuclear polymerization is beneficial to improve the anti-corrosion performance of the coating. After long-term immersion in 3.5%(wt) saline, the impedance value of sample L16 is still 5.049×10^(6) Ω·cm^(2).The data proves that L16 resin emulsion film-forming coating has the best anticorrosion performance.

关 键 词：丙烯酸十二酯 丙烯酸乳液 乳液聚合 金属防腐涂层 

分 类 号：O632.52[理学—高分子化学]