新型水性环氧乳化剂的乳化性能及应用研究  

The research on emulsifying property and application of new water-based epoxy emulsifier

作　　者：刘文娴[1] 谢志红[1] 田承宇 

机构地区：[1]广州航海学院航务工程系,广东广州510725 [2]中国水利水电第八工程局科研设计院,湖南长沙410007

出　　处：《新型建筑材料》2017年第12期58-62,共5页New Building Materials

基　　金：国家自然科学基金青年科学基金项目(11602060);广州航海学院创新强校项目(2016E025)

摘　　要：以双酚A型环氧树脂E-44和聚乙二醇为原料,合成新型水性环氧乳化剂,对其溶解性和稳定性进行试验研究,同时分析其对水泥砂浆性能的影响。结果表明,环氧乳液在聚乙二醇的相对分子质量为4000、6000时与E-44合成的乳化剂稳定性较好,最佳工艺为:n(E-44)∶n(PEG-6000)=1.25,乳化剂占环氧树脂总质量的20%~25%,乳化温度为50~60℃。水性环氧乳液对水泥砂浆起缓凝作用,且水泥砂浆后期抗压、抗折强度和化学稳定性都随着乳液掺量的增大先提高后降低,乳液的最优掺量为8%。A new type of water-based epoxy emulsifier was synthesized with bisphenol a epoxy resin E-44 and polyethylene glycol as raw materials and the solubility and stability were studied. The influence of emulsifier on cement mortar was analyzed. The result shows：The stability of the emulsifier composited with E-44 is good when the molecular weight of epoxy emulsion in polyethylene glycol was 4000 and 6000. The optimal process shows that：epoxy resin to PEG 6000 was 1.25：l,the optimum value of the total mass of the epoxy resin is 20% to 25% and the optimum temperature of emulsification is 50℃ to 60℃. Water based epoxy emulsion has a retarding effect on cement mortar and the compressive strength,flexural strength and chemical stability of cement mortar in the later stage first increased and then decreased, and the optimum dosage was 8%.

关 键 词：环氧乳化剂 乳化性能 稳定性 水泥砂浆 

分 类 号：TU578.12[建筑科学—建筑技术科学] TQ314.255[化学工程—高聚物工业]