聚氨酯在纸张涂布中的应用研究  

Application of Polyurethane in Paper Coating

作　　者：杨志勇[1] 谢益民[1] 周燕[1] 王鹏[2] 赵芳[1] 

机构地区：[1]山东轻工业学院制浆造纸工程省级重点学科,山东济南250100 [2]华南理工大学制浆造纸工程国家重点实验室,广东广州510641

出　　处：《造纸化学品》2006年第2期37-40,共4页Paper Chemicals

基　　金：山东省教育厅科技计划项目(231026201);教育部博士点基金(20020561022)

摘　　要：讨论了聚氨酯(PU)的合成、“封闭”、“解封”以及聚氨酯与纤维羟基之间的反应对封闭型水性聚氨酯纸张的增强作用;并将聚氨酯“封闭”乳液单独应用于纸张涂布与涂料液中添加聚氨酯、“封闭”乳液后应用于纸张涂布中的效果进行了比较;结果表明,单独应用的效果好,纸张物理强度均得到不同程度的提高,并改善了纸张的施胶度等物理性能。This paper discussed the synthesis, blocking and unblocking of polyurethane as well as the effect of blocked polyurethane reacting with fiber hydroxyl on its performance for improving paper strength. The ＂blocked＂ PU was dispersed in aqueous phase and was applied to paper surface coating alone or together with other coatings. The experiments showed that the best results was obtained when the blocked polyurethane emulsion was used alone. Various paper strength properties and sizing degree were all improved to some levels.

关 键 词：甲基-2 4-二异氰酸酯 聚氨酯 涂布 

分 类 号：TS727.3[轻工技术与工程—制浆造纸工程]