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| 摘要: |
| 先合成了含有环氧树脂基团和表面活性基团的反应性环氧树脂乳化剂，再用该乳化剂并借助于相反转技术制备Ⅱ型水性环氧树脂乳液，研究了乳化剂对水性环氧树脂乳液的稳定性，分散相粒径和固化性能的影响；研究了水性环氧树脂系统的成膜机理及其适有期。研究发现，乳化剂浓度合适时，所制得的乳液稳定性较好，分散相粒子的平均粒径较小，因而相应形成的兴膜是均匀，完全固化的硬膜，其硬度较高，水性环氧树脂体系的成膜机理与溶剂环氧树脂体系的成膜机理不同，其适用期应用涂膜光泽度随时间的变化来确定。 |
| 关键词: 水性环氧树脂 乳液 乳化剂 固化 适用期 |
| DOI： |
| 分类号:TQ323.5 |
| 基金项目:上海高分子材料研究开发中心资助项目 |
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| Study on Novel Waterborne Epoxy Resin Emulsion and Its Film Formation |
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CHEN Ting GU Guo fang
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| Abstract: |
| The novel waterborne epoxy resin emulsion was prepared by the phase inversion technique. The reactive emulsifier, which contains both epoxy group and surface active group, was synthesized by reaction between epoxy resin and a surfactant. The effects of the emulsifier on the stability, particle size of epoxy resin emulsion and its curing property were investigated. Also the film formation and the pot life of the waterborne epoxy system were studied. It was found that at the higher concentration of the emulsifier, the better stability and smaller particle size of the emulsion are obtained, and the film formed is homogeneous, fully cured, therefore it has higher hardness. Film formation of the waterborne epoxy resin system is quite different from solvent based epoxy resin system and pot life of the emulsion should be determined by the gloss change with the time instead of viscosity change. |
| Key words: waterborne epoxy resin emulsion,phase inversion,emulsifier,curing,pot life, |
