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以马来酸酐(MAH)、苯乙烯(St)和丙烯酸丁酯(BA)为共聚单体,以过硫酸钾(KPS)/亚硫酸氢钠为氧化还原型引发剂,采用无皂种子乳液共聚法合成了一种阴离子型乳液施胶剂;然后将该施胶剂与氧化淀粉复配制成施胶液。讨论了反应条件对乳液稳定性及施胶液应用性能等影响。结果表明:制备施胶剂的较佳反应条件为m(MAH)∶m(St)∶m(BA)=1.7∶5.7∶4.3、n(KPS)∶n(亚硫酸氢钠)=3∶2且w(KPS+亚硫酸氢钠)=2.5%、反应温度68~75℃和反应时间6 h;该施胶剂的玻璃化转变温度(Tg)为39.02℃和105℃;将该施胶液用于纸张表面施胶时,其纸张施胶度比原纸提高了4倍,其纸张平滑度、耐破度及张力等比纯淀粉施胶液分别提高了89%、17%和58%。
Using MAH, ST and BA as comonomers, potassium persulfate (KPS) / sodium bisulfite as redox initiators and soap-free seed emulsion copolymerization Method of synthesis of an anionic emulsion sizing agent; and then the sizing agent and oxidized starch complex formulated sizing solution. The effects of reaction conditions on the stability of the emulsion and the application properties of the sizing solution were discussed. The results show that the optimum reaction conditions for the preparation of sizing agent are m (MAH): m (St): m (BA) = 1.7: 5.7: 4.3, n And the w (KPS + sodium bisulfite) = 2.5%, the reaction temperature 68 ~ 75 ℃ and the reaction time 6 h; the sizing agent glass transition temperature (Tg) 39.02 ℃ and 105 ℃; the sizing liquid with When sizing on the surface of the paper, the sizing degree of the paper is 4 times higher than that of the base paper, and the smoothness, burst resistance and tension of the paper are improved by 89%, 17% and 58% respectively compared with the pure starch sizing solution.