摘要
为了探究双羟基染料不同引入方式对水性聚氨酯(WPU)乳液及其成膜性能的影响,采用异佛尔酮二异氰酸酯、聚四氢呋喃(PTMG)、2,2-二羟甲基丙酸和1,4-丁二醇(BDO)合成了WPU乳液。将酸性红87作为扩链剂部分替代BDO制备了有色化学共聚聚氨酯(ARWPUA-1~3)乳液;将酸性红87作为软段部分替代PTMG制备了有色化学共聚聚氨酯(ARWPUB-1~3)乳液;将酸性红87与WPU共混制备了WPU/AR。采用FTIR、1HNMR和UV-Vis对样品的结构进行了表征;考察了不同有色WPU的贮存稳定性、耐溶剂性、颜色特征值、耐干/湿摩擦色牢度以及力学性能,并对其进行了分子动力学模拟。结果表明,由n(酸性红87)∶n(BDO)=1∶4制备的ARWPUA-2具有优异的贮存稳定性;在不同溶剂中均不会发生溶解脱色现象;具有良好的耐干/湿摩擦色牢度和较高的力学性能,其拉伸强度22.6MPa,断裂伸长率为810%。
In order to investigate the effects of dihydroxyl dye introduction methods on waterborne polyurethane(WPU)emulsion and its film forming properties,a waterborne polyurethane emulsion was synthesized from isophorone diisocyanate,polytetrahydrofuran(PTMG),2,2-dimethylolpropionic acid,and 1,4-butanediol(BDO).Colored chemical copolymerized polyurethane(ARWPUA-1~3)emulsions were then prepared using Acid Red 87 instead of BDO as chain extender.Colored chemical copolymerized polyurethane(ARWPUB-1~3)emulsions were prepared with Acid Red 87 as partial substitute for PTMG.WPU/AR was prepared by blending Acid Red 87 with WPU.The samples obtained were characterized by FTIR,1HNMR and UV-Vis absorption spectroscopy,and further evaluated for analyses on their storage stability,solvent resistance,color fastness to dry/wet friction,and mechanical properties.Molecular dynamics simulation was employed to analyze the binding energy of polyurethane systems.The results indicated that ARWPUA-2 prepared with n(Acid Red 87)∶n(BDO)=1∶4 exhibited excellent storage stability and had no dissolving and decolorization in different solvents with good color fastness to dry/wet friction and high mechanical properties.The tensile strength was 22.6 MPa and the elongation at break was 810%.
作者
鲍艳
韩旆
刘锋
刘超
颜红侠
张文博
BAO Yan;HAN Pei;LIU Feng;LIU Chao;YAN Hongxia;ZHANG Wenbo(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Xi'an 710021,Shaanxi,China;Hangzhou Palmland Technology Development Co.,Ltd.,Hangzhou 311215,Zhejiang,China;Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry&Technology,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;School of Science,Northwestern Polytechnical University,Xi'an 710129,Shaanxi,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2024年第4期840-847,共8页
Fine Chemicals
基金
国家自然科学基金项目(22078188)
咸阳市科技计划项目(2021ZDZX-GY-0007)。
关键词
水性聚氨酯
酸性红87
高分子染料
色牢度
分子动力学模拟
功能材料
waterborne polyurethane
Acid Red 87
polymer dye
color fastness
molecular dynamics simulation
functional materials
