摘要
Abstract
To improve the dispersion stability of liquid fluorescent whitening agents for polyester,taking whitening agent ER-I as an example,this study used single factor analysis and orthogonal experimental meth-ods to investigate the effects of particle size,dispersant type,mass ratio of whitening agent to dispersant,and whitening agent dosage on the stability of the dispersion system.The results indicate that the degree of influence of each factor,from large to small,is as follows:particle size,type of dispersant,mass ratio of whit-ening agent to dispersant,and dosage of whitening agent.When using a super dispersant,the concentration of the whitening agent is 1 g/L,the mass ratio of the whitening agent to the dispersant is 1.0∶0.5,and the av-erage particle size of whitening agent is around 200 nm,the best stability effect is obtained,with a residual concentration of 59.5%after centrifugation.The static stability has also been significantly improved.Mean-while,the optimized system has a good whitening effect on polyester fabrics.关键词
荧光增白剂/稳定性/超分散剂/白度Key words
fluorescent whitening agent/stability/super dispersant/whiteness分类
化学化工
