摘要： 首先用丙烯酸酯单体和乳化剂预乳化环氧树脂,按照乳液聚合的工艺制备了水性丙烯酸/环氧杂化乳液;研究了杂化乳液合成过程中乳化剂种类和用量、功能单体的用量、乳液pH等参数对乳液性能的影响。在此基础上,使用该杂化乳液配制双组分水性环氧涂料,对涂层性能进行测试。结果表明:所制备水性丙烯酸/环氧杂化乳液具有较优的贮存稳定性,采用该杂化乳液配制双组分水性环氧涂料,涂膜具有优异的综合性能;与传统的双组分水性环氧涂料体系相比,该杂化涂料体系具有更长的适用期、更快的干燥速度,可广泛应用于包括防锈底漆和面漆在内的各种防腐涂料应用领域。
关键词:
水性丙烯酸/环氧杂化乳液,
预乳化,
低VOC,
金属防腐
Abstract: A novel waterborne acrylic/epoxy hybrid emulsion, which combined the advantages of both acrylic emulsion and 2K epoxy coating systems and overcame their disadvantages, was prepared by copolymerizing ethylenic monomers at the presence of moderate amounts of fluid epoxy resin. The effects of type and amount of emulsifiers, the amount of functional monomer, pH of the hybrid on the properties of emulsion were discussed. The waterborne 2K epoxy coatings were prepared on the basis of the synthesized waterborn eacrylic/epoxy hybrid emulsion. Moreover, the properties of the cured coatings were investigated. The results showed that the synthesized waterborn eacrylic/epoxy hybride mulsion had good storage stability. And the coatings based on the hybrid emulsion exhibited excellent properties. Compared with the conventional 2K epoxy coatings, the novel coatings showed longer pot life and faster dryingrate.
Key words:
waterborne acrylic/epoxy hybrid,
pre-emulsification,
low VOC,
anticorrosion
中图分类号:
许飞, 何庆迪, 庄振宇, 曹亚成, 祝宝英, 苟小青, 张玉兴, 张汉青, 朱柯, 陈斌, 刘明. 新型水性丙烯酸/环氧杂化乳液的制备及其在水性双组份金属防护涂料中的应用[J]. 涂料工业, 2017, 47(4): 48-54.
Xu Fei , He Qingdi , Zhuang Zhenyu , Cao Yacheng, Zhu Baoying, Gou Xiaoqing, Zhang Yuxing, Zhang Hanqing, Zhu Ke, Chen Bin, Liu Min. Preparation of Novel Waterborne Acrylic/Epoxy Hybrid Emulsion and Its Application in Waterborne 2K Anticorrosive Coatings[J]. Paint & Coatings Industry, 2017, 47(4): 48-54.