改性PAE树脂的合成与应用

以二乙烯三胺和己二酸为原料，利用常用廉价改性剂M对中间体进行改性，制备了改性聚酰胺多胺环氧氯丙烷（出陛PAE）产品。结果表明：当胺酸比为1．05：1．0，反应温度为180℃，反应时间为5．5h，降温到120℃时，加入1mol改性剂M，继续反应1h,调节固含量为50％，得到改性中间体溶液的黏度适合进行下一步反应。制备的改性PAE添加量为绝干浆的1．2％～1．4％时，湿强度最高可达；55．6％，且改性产品PH值调节在5～4．5之间，稳定性和水溶性都比较好。

Synthesis and application of modified PAE

The modified polyamide polyamine epichlorohydrin resin was produced by using the diethylenetriamine and adipic acid as raw materials and using low cost modifier M for modification. The results show that when the ratio of diethylenetriamine to adipic acid is 1.05：1.0, the reaction temperature 180℃, reacting 3.5h, then the system is cooled to 120℃ and lmol modifier M is added, the reaction is continued for a hour, solid content is regulated to 50% to get the proper modified intermediate. When prepared modified PAE was added to the pulp of 1.2% to 1.4% based on oven dry pulp, the wet strength reaches to 35.6%, which have good stability and good water solubility at the pH value of 3 to 4.5.