聚丙烯酸酯包裹炭黑水性涂料防腐蚀性能的研究  

Research on the Anticorrosion Property of Water-borne Coatings of Polyacrylate Wrapped Carbon Black

作　　者：肖伟玲[1] 强敏[1] 周华[1] 董怡斌[1] 荣先萍[1] 龚凡杰[1] 徐君君[1] 

机构地区：[1]武汉科技大学化工学院,武汉430081

出　　处：《材料导报（纳米与新材料专辑）》2008年第3期307-309,共3页

摘　　要：利用乳液聚合制得一种聚丙烯酸酯包裹了炭黑的水性涂料。通过正交实验表明:当m_(APS):m_(SDS):m_(MMA):m_(BA)=1:20:100:100,炭黑的质量占MMA单体的0.2%时,该水性涂料作为A3碳钢的涂层在3.5%(质量分数)NaCl溶液的腐蚀环境中,腐蚀电流为0.79μA,较纯聚丙烯酸酯涂层的1.58μA低;电化学阻抗谱(EIS)也表明:以聚丙烯酸酯包裹炭黑乳液作涂层防腐蚀效果较纯聚丙烯酸酯好,其阻抗值有很大提高;扫描电镜显示大部分炭黑粒子均匀分散在聚丙烯酸酯胶团中。By using emulsion polymerization we can get a water-borne coatings of polyacrylate containing carbon black. The orthogonal experiment indicates that,when the carbon black quality occupies 0. 2% of the MMA monomer＇s,the corrosion current is 0.79μA when the water-borne coatings used in A3 steel in the corrosion enviromnent of 3. 5wt% NaCl solution,which is lower than the pure polypropylene coatings 1.58μA. The results of EIS also indicates that anti-corrosion is better than the pure when the polyacrylate in the emulsion wraps carbon black, and its resistance value has a big enhancement. The scanning electron microscope demonstrates that the majority of carbon black particles disperse evenly in the polypropylene mieelles.

关 键 词：聚丙烯酸酯 炭黑 水性涂料 防腐蚀 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业] TQ325.12