改性苯乙烯丙烯酸酯乳液及其在表面施胶中的应用

利用高分子质量、低黏度淀粉(CS-8)的乳化、分散作用,以苯乙烯(St)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)为主要原料,引入功能性单体,采用核壳聚合法制备了阳离子苯乙烯丙烯酸酯(SAE)乳液。重点研究了功能性单体对SAE乳液性能及表面施胶效果的影响,并与商品苯丙类施胶剂8906及AKD进行了比较。结果表明,选用甲基丙烯酸二甲基氨基乙酯(DM)为阳离子单体(用量2%),松香为抗水性功能单体,SAE乳液的综合性能较佳。经SAE施胶后,喷墨打印纸的抗水性能和抗张强度均得到明显改善。将以DM、松香为功能性单体所制SAE乳液与苯丙类施胶剂8906及AKD进行比较,发现其对纸张抗水性能和物理强度的改善作用明显优于商品AKD,稍优于苯丙类施胶剂8906。

Modification of Styrene Acrylate Emulsion(SAE) and Its Application in Paper Surface Sizing

A series of core-shell type cationic soap-free SAE latexes were prepared by using styrene(St),butyl acrylate(BA) and methyl methacrylate(MMA) as main materials and introducing functional monomer,by adding in drops continuously and using starch(CS-8),with high molecular weight and low viscosity as the emulsifier and the dispersant.The influence of functional monomer(cationic monomers and water-resistant functional monomers) on properties of styrene acrylate(SAE) and its surface sizing effect were studied,and...