含一种蒽醌结构红色水性聚氨酯的制备及表征

Preparation and Characterization of Red Waterborne Polyurethane with an Anthraquinone Structure

以聚(2-甲基-1,3-丙二醇-己二酸)酯二醇(PMA-1000),2,2-二羟甲基丙酸(DMPA),甲苯二异氰酸酯(TDI),1,4-丁二醇(BDO),1-((2-羟基乙基)氨基)蒽醌(SR222)为原料,三乙胺(TEA)为中和剂,乳化后得到含SR222的红色水性聚氨酯染料(SR222-WPU).利用红外光谱仪、荧光分光光度计、激光粒度仪、分光测色仪、色牢度测试仪对产物的结构和性能进行表征.结果表明,SR222蒽醌结构接到水性聚氨酯链上,合成了SR222-WPU,其乳液在300~475 nm波段具有紫色荧光;随着SR222添加量的增加,SR222-WPU乳液粒径从58.71 nm增大到86.6 nm,胶膜的a*值从21.26增大到79.64,红色逐渐加深;SR222-WPU在棉布上色牢度较好,耐摩色牢度为4~5级,耐水渍褪色度为5级.

Taking poly(2-methyl-1,3-propylene glycol-adipic acid)ester diol(PMA-1000),2,2-dihydroxymethyl propionic acid(DMPA),toluene diisocyanate(TDI),1,4-butanediol(BDO),and 1-((2-hydroxyethyl)amino)anthraquinone(SR222)as raw materials,triethylamine(TEA)as neutralizer,a red waterborne polyurethane dye(SR222-WPU)with SR222 was produced after emulsification.Making use of infrared spectroscopy,fluorescence spectrophotometer,laser particle size analyzer,spectrophotometer and color fastness tester,the structure and properties of the product were characterized.The results show that,the structure of SR222 anthraquinone is linked to the chain of waterborne polyurethane,SR222-WPU can be synthesized,and its emulsion visualizes purple fluorescence in 300~475 nm band.With the increase of SR222 content,the particle size of SR222-WPU emulsion can increase from 58.71 nm to 86.6 nm,the a*value of film can increase from 21.26 to 79.64,and the red color deepens gradually.SR222-WPU possesses better colour fastness to cotton cloth,rubbing fastness is 4~5 grade and water stain fading fastness is 5 grade.