以聚酰胺多胺(PPC)和2,3-环氧丙基三甲基氯化铵(ETA)为原料,硝酸铈铵为引发剂,通过亲核加成反应合成了一种新型阳离子聚酰胺多胺絮凝剂,通过红外光谱仪、核磁共振氢谱仪对产物的结构进行了表征。考察了PPC与ETA质量比、反应温度、反应时间、引发剂质量对产物特性黏数的影响,确定了最佳工艺条件为:m(PPC)∶m(ETA)=1∶1,引发剂质量为0.06 g,反应温度为80℃,反应时间为6 h,产物特性黏数达到4.31 d L/g。探究了不同阳离子度、絮凝剂质量浓度对造纸废水体系絮凝性能的影响,得到最佳阳离子度为28%~32%,质量浓度为1.8 mg/L,在此条件下CODC r的去除率可达90%以上,透光率达97%以上,与其他同类絮凝剂相比性能优异。 A new type of cationic polyamide was synthesized by nucleophilic addition reaction using polyamide polyamine (PPC) and 2,3-epoxypropyltrimethylammonium chloride (ETA) as raw materials and ammonium cerium nitrate as initiator Polyamine flocculant, the structure of the product was characterized by infrared spectroscopy, nuclear magnetic resonance spectrometer. The effects of mass ratio of PPC to ETA, reaction temperature, reaction time and initiator quality on the intrinsic viscosity of the product were investigated. The optimum process conditions were as follows: m (PPC): m (ETA) = 1: Was 0.06 g, the reaction temperature was 80 ℃, the reaction time was 6 h and the intrinsic viscosity of the product reached 4.31 d L / g. The effects of different cationic degree and flocculant concentration on the flocculation performance of papermaking wastewater system were explored. The optimal cationization degree was 28% -32% and the concentration was 1.8 mg / L. The removal rate of CODCr was up to More than 90%, light transmittance of more than 97%, compared with other similar flocculant performance.