苯甲醇对超细纤维合成革染色性能的影响

针对超细纤维合成革存在深染性差的问题,采用苯甲醇助剂改善超细纤维合成革的染色性能.研究苯甲醇对上染百分率、K/S值和皂洗牢度的影响,同时采用扫描电镜(SEM)、示差扫描量热法(DSC)等手段对苯甲醇的助染机制进行探讨.试验结果表明:苯甲醇的加入使得上染速率加快,半染时间缩短,平衡上染百分率显著提高;苯甲醇对染色样品的皂...

Effect of benzoic alcohol on dyeing properties of microfiber synthetic leather

It is difficult to produce dark shades for microfibre synthetic leather. For this reason, benzoic alcohol was used to improve the dyeing properties of microfibre synthetic leather. The effect of benzoic alcohol on the dye uptake, color strength and washing fastness was investigated. The assisted dyeing mechanism of benzoic alcohol was examined by scanning electron microscopy (SEM) and differential scanning calorimeter (DSC). The results indicated that with addition of benzoic alcohol the rate of dye uptake increased, half-dyeing time reduced, equilibrium dye uptake percentage improved drastically, and fastness to soaping of the dyed fabrics was not affected. SEM image showed that there was a dye layer on the microfibre surface. DSC measurement showed that the glass transition temperature of the sample reduced because of benzoic alcohol treatment. Benzoic alcohol has a plasticization to the fiber and solublization to the dyestuffs, thus facilitating the diffusion of dye molecules into the microfibre.