【摘要】 针对湿强损纸难以再制浆的缺点,采用水溶液聚合工艺以阳离子单体(DMC)与丙烯酰胺、乙二醛进行三元共聚反应,合成了损纸易回用型暂时性湿强剂。经实验得出了合成树脂的最佳条件:阳离子单体用量20%,引发剂用量0.3%,聚合单体浓度25%,乙二醛用量30%,三元反应温度65℃,反应时间120min。应用结果表明该树脂是一种优良的暂时性湿强剂。更多还原

【Abstract】 The present situation and develop- ment of the preparation and application of domestic and international paper wet strength- ening agents are summarized in this paper. Aiming at the difficulties in repulping broke with wet strength,a temporary wet strengthening agent is synthesized through a terpolymerization with cationic monomer (DMC),acrylamide(AM)and glyoxal.Its ap- plication process was further studied from which the optimum operation condition is ob- tained for bleached hardwood pulp.And the result shows that the resin is a kind of excel- lent temporary wet strength agent.更多还原