新型改性水性防腐涂料的制备及性能评价

Preparation and performance evaluation of new modified waterborne anticorrosive coatings

为进一步提高水性环氧树脂类防腐涂料的综合性能,以聚乙二醇PEG1000、环氧树脂E20、有机多元胺X和环氧树脂E51为主要原料,采用两步法制备了一种新型改性水性防腐涂料ECM-1,优化了其制备工艺条件,并评价了其综合性能。当聚乙二醇PEG1000和环氧树脂E20的摩尔比为1∶1、催化剂的用量为0.5wt%、EC-1聚合反应时间为5h、EC-1聚合反应温度为70℃时,制备的改性环氧固化剂EC-1和新型改性水性防腐涂料ECM-1的综合性能达到最佳。新型改性水性防腐涂料ECM-1涂层的抗冲击强度、铅笔强度、柔韧性、附着力、耐水性能和耐酸碱性能均满足防腐涂料相关使用标准的要求,是一种综合性能优良的水性有机防腐涂料。

In order to further improve the comprehensive performance of waterborne epoxy resin anti-corrosion coatings,a new modified waterborne anti-corrosion coating ECM-1 was prepared using polyethylene glycol PEG1000,epoxy resin E20,organic polyamine X,and epoxy resin E51 as the main raw materials by a two-step method.The preparation process conditions were optimized,and its comprehensive performance was evaluated.When the molar ratio of polyethylene glycol PEG1000 to epoxy resin E20 is 1∶1,the amount of catalyst is 0.5wt%,the EC-1 polymerization reaction time is 5h,and the EC-1 polymerization reaction temperature is 70℃,the comprehensive performance of the prepared modified epoxy curing agent EC-1 and the new modified waterborne anti-corrosion coating ECM-1 reaches the best.The impact strength,pencil strength,flexibility,adhesion,water resistance,and acid and alkali resistance of the new modified waterborne anti-corrosion coating ECM-1 can all meet the requirements of the relevant usage standards for anti-corrosion coatings.It is a water-based organic anti-corrosion coating with excellent comprehensive performance.