以聚乙烯吡咯烷酮(PVP)为分散剂,以苯乙烯(St)、丙烯酸十八酯(ODA)、丙烯酰胺(AM)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)为主要反应单体,经过硫酸钾(KSP)引发无皂共聚,然后将松香投入,借助于反应形成的阳离子无皂苯丙聚合物作为乳化分散剂,制得阳离子分散松香胶。当pH值为6～6.5,硫酸铝[Al2(SO4)3]用量为0.5%,阳离子聚丙烯酰胺(CPAM)用量为0.2%,阳离子分散松香胶用量为1.2%时(以上均为占干浆料的质量分数),将此阳离子分散松香胶应用于混合浆抄纸体系中,采用逆向施胶,纸张施胶度达80s。 Polyvinylpyrrolidone (PVP) was used as dispersant and styrene (St), octadecyl acrylate (ODA), acrylamide (AM) and methacryloyloxyethyltrimethylammonium chloride The reaction monomer, after potassium sulfate (KSP) initiated soap-free copolymerization, and then rosin input, with the aid of the reaction of the cationic soap-free styrene-acrylic polymer as emulsifier to obtain a cationic dispersed rosin gum. When the pH was 6 ~ 6.5, the amount of aluminum sulfate [Al2 (SO4) 3] was 0.5%, the amount of cationic polyacrylamide (CPAM) was 0.2% and the amount of cationic dispersant rosin was 1.2% The mass fraction of the material), the cationic dispersed rosin was applied to the mixed pulp papermaking system, using reverse sizing, paper sizing degree of 80s.