作　　者： ; ; ; ;

机构地区： 东北电力大学化学工程学院

出　　处： 《纸和造纸》 2012年第2期33-35,共3页

摘　　要： 用咪唑、甲苯-2，4-二异氰酸酯（TDI）和聚乙二醇600（PEG600）合成聚氨酯预聚体乳液，对纸张进行涂布处理，讨论表面涂布量分别为1．2～7g·m-2时，滤纸各项物理性能的变化。结果表明：当滤纸涂布量为7g·m-2时，滤纸的耐折度、撕裂度、抗张强度等物理性能有明显改善，处理后滤纸的湿抗张指数、干抗张指数分别提高到滤纸原纸的19．59倍和1．74倍，耐折度提高了47．05倍。扫描电镜观察可以看出加聚氨酯预聚体乳液进行聚氨酯化后，纸页的纤维间连接了许多丝状和薄膜状物质，这些物质在纤维之间尤其是纤维与纤维交叉的地方形成架桥结构，从而加强了纤维之间的连接。 The applications of imidazole-TDI-PEG （called LTP 600） in paper＇s surface finishing were investigated. The solution of the LTP 600 was used in coating at the same condition. ~he coating weight of the filter paper were 1.2 g·m-2, 3 g·m-2, 4 g·m-2, 5 g·m-2, 6 g·m-2and 7 g·m-2. q＇he physical properties of the coated paper were tested. It was found that the treatment could enhance the paper＇s physical strength. When the coating weight of the filter paper was 7 g·m-2, the physical properties of the filter paper were enhanced strongly, especially the wet strength and folding resistance. The wet strength index and dry strength index of the treated paper reaches19.59 times, 1.74 times of the original base paper. Folding resistance is 894, 47.05 times of the base paper.

关 键 词： 聚氨酯乳液 咪唑 纸张 表面处理 物理强度

领　　域： [轻工技术与工程]