高固含量三聚氰胺甲醛树脂的制备及应用研究  

Preparation and Wet Strengthening Properties of High Solid Content Melamine-formaldehyde Resin

作　　者：杨惊[1] 李小瑞[1] 

机构地区：[1]陕西科技大学轻化工材料与设计研究所,陕西咸阳712081

出　　处：《中国造纸学报》2005年第2期148-151,共4页Transactions of China Pulp and Paper

摘　　要：在甲醇溶液中,用多聚甲醛部分代替甲醛溶液与三聚氰胺在碱性条件下发生羟甲基反应,初缩体在酸性条件下与甲醇同时发生醚化、自身缩聚,最后调碱降低树脂黏度制得水溶性好、固含量高的改性三聚氰胺甲醛树脂湿强剂。应用实验结果表明,在最佳条件下制备的改性三聚氰甲醛树脂对漂白麦草浆有较好的增湿强作用,并分析了该树脂对纸样耐破度、耐折度及撕裂度的影响。In methanol solution, paraformaldehyde was used as substitution of formaldehyde and melamine and hydroxymethylation was taken place under alkaline condition. The prepolymer was etherified with methanol and self-polymerized in acid condition, then high solid content melamineformaldehyde resin with high water solubility was prepared by increasing the pH value. The result indicated that modified melamine-formaldehyde resin which was prepared under optimum conditions had a good wet strengthening effect on bleached wheat straw pulp. The influence of the resin on the physical strength of the paper was also analyzed.

关 键 词：多聚甲醛 改性三聚氰胺甲醛树脂 水溶性 湿增强剂 

分 类 号：TS727.1[轻工技术与工程—制浆造纸工程]