水溶性双酚A型环氧树脂乳液的制备

Preparation of waterborne bisphenol-A epoxy resin emulsion

采用E-Ⅱ型乳化剂和相反转技术制备水溶性双酚A型环氧树脂乳液，研究了乳化剂的用量、乳化时间、搅拌速率和乳化温度对乳液稳定性的影响。得出了最佳乳化工艺条件：乳化剂质量分数为7．25％～8．0％、乳化温度为60～70℃、搅拌速度为700～900r／min、乳化时间为40～50min。采用激光粒度衍射分析仪表征了水溶性环氧乳液的粒径为400～500nm。

Using self-synthesized E-Ⅱ emulsifier the waterborne bisphenol-A epoxy resin emulsion was prepared by phase inversion technology. Effect of emulsification temperature, emulsification time, emulsifier concentration and shear rate on the stability of prepared waterborne bisphenol-A epoxy resin emulsion was discussed and analyzed. The optimum preparation condition of the waterborne bisphenol-A epoxy resin emulsion are as follows：emulsification temperature of 60 - 70 ℃, emulsification time of 40 - 50 min, emulsifier concentration of 7.25% - 8.0% and the shear rate of 700 - 900 r/min. And the particle diameter of the waterborne bisphenol-A epoxy resin emulsion was about 400 - 500 nm from laser diffraction particle size analyzer.