改善阴离子染料对阴离子鞣剂复鞣坯革上染性能的研究(Ⅰ)——进行染前预处理

Study on Improving the Dyeing Ability of the Retanned Leather by Anionic Tanning Agent to Anionic Dyestuff(Ⅰ)——Pretreating the Crust before Dyeing

以染料吸收率、坯革表面着色深度、颜色耐干、湿擦牢度为考察指标,采用正交试验法研究硫酸铵甲醛染前预处理及六次甲基四胺染前预处理中各因素的影响,得出了最佳工艺.用光学仪器对染色坯革表面着色深度进行检测,以CIE1976(L~*a~*b~*)色度空间及其色差公式评定革面着色情况.根据革表面纤维碎末的红外反射谱及染料上染速率曲线推测革表面着色深度提高的原因。检测染色坯革的耐湿热稳定性证明染前预处理不影响革的耐老化性能。

It has been researched using orthogonal test that the influnce of every foctor of treat- ing or hesamine.And the most proper technological condition of them has been found by leather,colour fastness of dyed leather to wet and dry rubbing. Using M 307 formula,the surface color strength's difference of dyed leather each other has been evaluated scientifical- ly and objectively.The reason of improving the surface Colour strength of dyed surface,and the curve of the rate of dye-uptake of dyestuff.The dyde leather's stability from fastness to ageing of leather.