双羟基染料改性有色水性聚氨酯的制备与性能
Preparation and properties of colored waterborne polyurethane modified by dihydroxyl dye
鲍艳 1韩旆 1刘锋 2刘超 3颜红侠 4张文博3
作者信息
- 1. 陕西科技大学 轻工科学与工程学院,陕西 西安 710021;轻化工程国家级实验教学示范中心,陕西 西安 710021
- 2. 杭州棕榈地科技开发有限公司,浙江 杭州 311215
- 3. 陕西科技大学 陕西省轻化工助剂化学与技术协同创新中心,陕西 西安 710021
- 4. 西北工业大学 理学院,陕西 西安 710129
- 折叠
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22.6 MPa,断裂伸长率为810%.
Abstract
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%.
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Key words
waterborne polyurethane/Acid Red 87/polymer dye/color fastness/molecular dynamics simulation/functional materials引用本文复制引用
基金项目
国家自然科学基金(22078188)
咸阳市科技计划(2021ZDZX-GY-0007)
出版年
2024
NETL
NSTL
万方数据