PVA接枝共聚物乳液表面施胶剂的研究  

Utilization of Emulsion of PVA Grafted Copolymer in Paper Surface Sizing

作　　者：王帆[1] 张光华[1] 孙卫玲[1] 费菲[1] 董惟昕[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《中国造纸》2010年第10期20-24,共5页China Pulp & Paper

基　　金：陕西科技大学研究生创新基金

摘　　要：以PVA为主链,丙烯酸(AA)、苯乙烯(St)、丙烯酸丁酯(BA)为单体,通过直接滴加方式制备了一种无皂乳液表面施胶剂。讨论了反应条件的变化对乳液稳定性及施胶应用效果的影响,确定了较佳的合成条件为:m(AA)∶m(St)∶m(BA)=4∶12∶9,w(KSP)=2.5%,反应温度80℃,反应时间6h。在原料相同的情况下,用直接滴加方式制得的PVA接枝乳液和利用核壳技术制得的苯丙乳液进行了理化性能和施胶性能的对比,结果发现,PVA接枝乳液的乳胶平均粒径比核壳苯丙乳液的小,且施胶效果明显比核壳苯丙乳液的好。Surface sizing agent was prepared by emulsifier-free copolymerization of acrylic acid（AA）,styrene（St）,butyl acrylate（BA）,using polyvinyl alcohol（PVA）as based chain.The effects of reaction conditions on stability and sizing performance of the emulsion were studied,the better reaction conditions were as the follows：m（AA）∶m（St）∶m（BA）= 4∶12∶9,w（KSP）=2.5%,temperature 80 ℃,time 6 h.Based on the same new material,the physical and chemical properties of the PVA grafted emulsion prepared by using direct dropping means and the styrene-acrylic emulsion prepared by using core-shell emulsion technology were compared.The results showed that the average particle size of grafted PVA emulsion was smaller than that of core-shell emulsion,and the sizing effect was obviously better than shell styrene-acrylic emulsion.

关 键 词：PVA接枝 核壳乳液聚合 表面施胶剂 

分 类 号：TS727.5[轻工技术与工程—制浆造纸工程]