【摘要】 苯乙烯、甲基丙烯酸甲酯、丙烯酞胺和阳离子单体在引发剂过硫酸铵的引发下，进行乳液共聚，即可得到四元的阳离子聚丙烯酸酯乳液增干强剂。并使用了ＩＲ、ＳＥＭ等手段对这种增强剂的结构和性能进行了表征。经过试验，发现该增强剂对纸的干强度有明显的效果。在使用少量助留剂的情况下，用量 １．０％（对绝干浆）时即可使纸的环压指数提高 １０％以上，挺度提高 ８％以上。该增强剂为乳液型，ｐＨ值５．０～７．０，粘度４～２０ ｍＰａ·ｓ，Ｚｅｔａ电位２０～４０ ｍＶ。更多还原

【Abstract】 The quaternion copolymerization of the St, MMA, AM and cationic monomer was carried out in the aqueous medium with the initiation of （NH₄） S₂O₈ and the dispersing action of PVA to form the self - emulsifying dry strength agents of the cationic polyacrylate resin for papermaking. This structure and properties of the dry strength agents were characterized by the methods of IR、SEM and so on. The dry strength agents have showed the obvious effect to increase the dry strength. The initiator amount is the 1. 0% of monomers and circular exponential had increased more than 10%. The dry strength agents are the stabe emulsion with the pH of 5. 0 - 7. 0 and vis- cosity of 4 - 20mPa. s and the Zeta values of 20 - 40mV.更多还原