联用紫外线辐射改性的羊毛织物茶色素同浴媒染工艺

以茶色素/金属媒染剂同浴媒染法为基础,对分别应用不同金属媒染剂的羊毛织物茶色素同浴媒染工艺进行筛选,对比经紫外线辐射改性前后的羊毛织物染色性能。结果表明,茶色素/铜媒同浴媒染的改性前后羊毛织物K/S值与固色率均较其余工艺高,并通过对比实验数据证实紫外线辐射有利于提升羊毛织物染色性能,故将其与茶色素/铜媒同浴媒染工艺联用进而增强茶色素染色效果。通过单因素分析对联用紫外线辐射改性的羊毛织物茶色素/铜媒同浴媒染工艺进行讨论并选择紫外线辐射改性时间、铜媒用量及染色时间等因子的优化范围,进而利用3因子二次通用旋转组合设计进行优化,从而确定优化工艺为(用量/对织物重(o.w.f)):紫外线辐射改性9 min,茶色素5.0%,铜媒1.7%,HCOOH 2.0%,pH=3.5~4.0,浴比1:50,95℃条件下染色60 min。与常规茶色素后铬媒染工艺相比,该优化工艺具有更好的染色效果和较低的金属媒染剂用量。

Tea pigment dyeing process with mordant of wool fabric treated by ultraviolet radiation

Based on tea pigment dyeing process with mordant of wool fabric, screening of the dyeing processes with different metal mordants were carried out, and dyeing properties of wool fabric before and after ultraviolet radiation were compared. The results showed thatK/S value and dye fixation of wool fabric dyed by tea pigment dyeing process with CuSO4 were higher than that in other processes, and improving dyeing properties of wool fabric treated by ultraviolet radiation was confirmed according to the comparison of experimental data. Therefore, the ultraviolet radiation was combined with tea pigment dyeing process with CuSO4 to improve the tea pigment dyeing effects of wool fabric. The tea pigment dyeing process with CuSO4 of wool fabric treated by ultraviolet radiation was discussed during single factor analysis, these optimized scopes of ultraviolet radiation time, CuSO4 content and dyeing time were selected, then the process was optimized by using the three-factor quadratic general rotary unitized design. The optimum process was determined as follows (dosage / on weight of fabric (o.w.f)): ultraviolet radiation time 9min, tea pigment 5.0%, CuSO41.7%, HCOOH 2.0%, pH=3.5~4.0, 95℃, dyeing time 60 min, bath ratio 1: 50. Compared with conventional tea pigment after chrome process, the dyeing effects of wool fabric dyed by the optimum process, which possessed of lower metal mordant content, were better.