【摘要】 采用环氧树脂和聚乙二醇反应合成了不同分子结构的高分子非离子型乳化剂,并利用相反转技术制备出了一系列水性环氧乳液。实验研究表明:采用等当量聚乙二醇10000和环氧树脂E-20,在催化剂存在下于75～85℃反应,合成得到的多嵌段共聚产物具有最好的乳化效果。乳化剂的用量在11%时,采用高速分散制备的环氧乳液具有最佳的稳定性,粒径大小在0.3μm左右。对其动力学数据分析可知该反应是一个一级反应。更多还原

【Abstract】 The high molecular weight non-ionic emulsifiers with different structures were synthesized using epoxy resin (EO) and polyoxyalkylene (PEG). Waterborne epoxy resin emulsion was prepared by phase inversion. It was found by experimental study that the best emulsion effect can be obtained using the polysegment embedded emulsifier synthesized by PEG10000 and E-20 with equivalent molar ratio under 75～85℃ in present of catalyst. The epoxy resin emulsion prepared by high speed dispersator with 11 percent emulsifier concentration has the best stability, whose particle size was about 0.3μm. Kinetic study showed that it was a first-order reaction.更多还原