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.
出处
《造纸化学品》
CAS
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)
