【摘要】 通过化学改性方法将环氧树脂E-44与油酸进行酯化反应,在与马来酸酐加成合成一种阴离子型水性环氧树脂。研究了酯化反应过程中反应温度、反应时间和酯化率的关系;探讨了反应物配比对水性环氧树脂水分散性,稳定性及固化性能的影响。利用红外光谱对产物结构进行表征。结果表明:环氧树脂E-44与油酸等摩尔比,反应温度130℃,反应时间4～5h所制得水性环氧树脂性能最好且体系不含有机溶剂。更多还原

【Abstract】 anionic waterborne epoxy resins was prepared by esterification of epoxy resin and oleic acid,and then added with maleic anhydride(Ma).The relationship between esterification conversion and reaction time,temperature was studied.The effect of material ratio on the water disperse,stability and curing properties of waterborne epoxy emulsion was also investigated.The structure of the polymer was characterized by FT-IR.The result was that the water dispersion and curing properties of waterborne epoxy emulsion was best with epoxy resin E-44 and oleic acid equal mole when the temperature was 130℃ and the reaction time was between 4and 5h.Especially the system doesn’t contain organic solvent.更多还原