摘要
以环氧树脂与丙烯酸酯为基本共聚单体,制备了一种无烷基酚聚氧乙烯醚(APEO)的含磷环氧丙烯酸酯防锈乳液。为改进环氧树脂与丙烯酸酯相容性差、接枝难的问题,首先以甲基丙烯酸与环氧树脂发生开环酯化反应合成可聚合的甲基丙烯酸环氧单酯。为使水性涂料具有出色的防锈性能,重点研究了无APEO的水性乳化体系,并引入磷酸酯乳化剂及单体。研究发现:选用LCA213与DSB复合的无APEO乳化剂体系,m(LCA213)∶m(DSB)为5∶1,复合乳化剂的用量占单体总量的3%,磷酸酯反应型乳化剂UCAN-3的用量为LCA213用量的8%,磷酸酯功能性单体APE-2005的用量占单体总量的4%,入釜丙烯酸预乳液量为1/4,滴加时间为3 h,反应温度为85℃时,制得的乳液细腻、均匀,涂膜完整。
An APEO-free phosphate-containing antirust epoxy acrylate emulsion is prepared from epoxy ester and acrylate as basic comonomer. In order to improve the compatibility and graft of epoxy ester and acrylate, MAA and E-51 were used as raw material to prepare po- lymerizable EM by ring-opening esterification. Then the EM was used as the next raw material to prepare epoxy acrylate emulsion. In order to improve the antirust property of the waterborne coatings, the paper focused on waterborne emulsifying system, wherein the phosphate ester emulsifier and monomer were particularly incorporated. The result showed that the emulsion exhibited uniform and fine appearance and form a cured film without defects when the mass ratio of LCA213 to DSB was 5：1, the composite emulsifier was 3% of the total monomer, UCAN-3 was 8% of LCA213, the APE-2005 was 4% of the total monomer, 1/4 amount of acrylic resin emulsion was added to the reactor, the dropping time was 3 hours, the reaction temperature was 85 ℃.
出处
《涂料工业》
CAS
CSCD
北大核心
2015年第7期40-46,共7页
Paint & Coatings Industry
基金
江苏高校优势学科建设工程资助项目
校企合作项目(028030003)
