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利用化学改性法将亲水性基团引入E-51环氧树脂链上,经冰乙酸成盐并加水制备改性树脂水性体系。研究了各反应物用量对体系的影响,确定了最佳的原料配比、反应温度及时间,用红外光谱对改性树脂的结构进行了表征,并用激光粒度分析仪对水性体系的粒度分布进行了测定。结果表明,该改性E-51环氧树脂成盐后可与水以不同的配比形成水溶液或水乳液,且体系具有优良的稳定性,水性体系粒度分布与文献相符。
Hydrophilic groups were introduced into the E-51 epoxy resin chains by chemical modification, then salified with glacial acetic acid and water was added to prepare a modified resin aqueous system. The effect of the amount of each reactant on the system was studied. The optimum ratio of raw materials, reaction temperature and time were determined. The structure of the modified resin was characterized by infrared spectroscopy. The particle size distribution of the aqueous system was characterized by laser particle size analyzer The determination. The results show that the modified E-51 epoxy resin can form an aqueous solution or an aqueous emulsion with different proportions after salt formation, and the system has excellent stability. The particle size distribution of the aqueous system is in accordance with the literature.