聚氨酯/聚乙烯胺复合胶体在纤维素纤维材料的应用  

Application of Polyurethane/Polyvinylamine Composite Colloid in Cellulose Fiber Materials

作　　者：祝博文 吴赟 龙柱 司鹏翔 张丹 Bowen Zhu;Yun Wu;Zhu Long;Pengxiang Si;Dan Zhang(The Key Laboratory of Ecological Textiles of Ministry of Education,School of Textile Science and Engineering,Jiangnan University,Wuxi 214122,China;Hangzhou Tomato Environmental Protection Technology Co.,LTD.,Hangzhou 311599,China)

机构地区：[1]江南大学纺织科学与工程学院生态纺织教育部重点实验室,江苏无锡214122 [2]杭州西红柿环保科技有限公司,浙江杭州311599

出　　处：《高分子材料科学与工程》2024年第10期57-65,共9页Polymer Materials Science & Engineering

基　　金：国家自然科学基金青年基金资助项目(52203139);江苏省自然科学基金青年基金资助项目(BK20221096);中国博士后基金面上资助项目(2022M711356)。

摘　　要：文中将合成的水性聚氨酯与聚乙烯胺物理共混制备了聚氨酯/聚乙烯胺(PU/PVAm)复合胶体,探究了胶体制备条件对成膜性能的影响及其在纤维素纤维材料的应用潜力。结果表明,当聚乙烯胺质量分数为60%时,所得胶体复合膜的断裂伸长率为1112.5%,拉伸断裂强度为7.39MPa,韧性为52.7MJ/m^(3)。将复合胶体作为表面施胶剂制备纸张,施胶量为6%的手抄片与原纸相比,抗张指数和撕裂指数分别提升204%和131%。对聚氨酯类复合胶体的制备及应用有一定的借鉴意义。Polyurethane/polyvinylamine(PU/PVAm)composite colloids were prepared by physically blending synthesized waterborne polyurethane with polyvinylamine.The aim of this research was to investigate the effects of colloid preparation conditions on film-forming properties and their potential applications in cellulose fiber materials.The results reveal that when the mass fraction of polyvinylamine is 60%,the resulting colloidal composite film exhibits an elongation at break of 1112.5%,a tensile breaking strength of 7.39 MPa,and a toughness of 52.7 MJ/m^(3).Furthermore,the composite colloid was employed as surface sizing agent for paper preparation.It is observed that the handsheets with a sizing amount of 6%show a significant improvement in the tensile index and tear index,with increases of 204%and 131%,respectively,compared to the original paper.This research holds significance for the preparation and application of polyurethane-based composite colloids.

关 键 词：聚氨酯 聚乙烯胺 复合胶体 表面施胶剂 

分 类 号：TS727.5[轻工技术与工程—制浆造纸工程]