表面处理对天丝织物活性染料喷墨印花的影响

分别采用海藻酸钠和羧甲基纤维素钠对天丝织物进行表面处理,研究表面处理对天丝织物活性染料喷墨印花效果的影响。处理后纤维的表面结构和形貌采用扫描电子显微镜进行表征。结果表明,织物经羧甲基纤维素钠处理后,活性染料喷墨印花颜色性能优于海藻酸钠,防渗化效果较好,但织物耐湿摩擦色牢度和断裂强力较差。

电解质对溶液中活性染料聚集的影响

了解电解质改变染料在溶液中分布状态、促进染料分子上染纤维的原理对开发无盐染色技术具有重要意义。通过测试不同电解质对染料溶液紫外可见吸收光谱的影响研究了电解质促进溶液中染料分子聚集原理。研究发现当电解质浓度小于等于1mol/L时,结合水分子数目更多的钾离子促进染料聚集的能力强于钠离子和镁离子,而当电解质浓度为2mol/L时,与水分子结合能力更强的镁离子促进染料聚集的能力强于钾离子和钠离子,说明电解质促进溶液中染料分子聚集的能力强弱与电解质在溶液中与水分子结合的数目及强弱有关,电解质与水分子结合能力越强、结合水分子数目越多促进染料分子聚集的能力越强。

二元醇水溶液性质与喷射性能研究

研究了具有相同碳链不同羟基位置的两种丙二醇(1,2-丙二醇和1,3-丙二醇)和三种丁二醇(1,3-丁二醇、2,3-丁二醇和1,4-丁二醇)对其水溶液保湿性、粘度、动态表面张力和喷射性能的影响。实验结果表明,相同碳链的二元醇中含伯羟基多的二元醇保湿性较差;每种二元醇水溶液随着二元醇浓度增加,粘度逐渐增加,表面张力逐渐降低,仲羟基在分子发生相对滑动时更容易使分子缠绕,体现为溶液的粘度大,含-CH_3基团的醇分子疏水性相对较强,使醇分子更多的在气液界面排列,表现为溶液表面张力较低;高频喷射时,溶液粘度接近时,表面张力大的溶液在喷射时容易离开喷嘴,液滴尾部获得初速度大,容易获得良好的液滴形态。

Short wet-steam dyeing process of cotton fabrics with reactive dyes

The effects of Reactive Black 5 utilized to cotton fabrics by short wet-steam process on the dyeing properties were investigated. This study will provide a theoretical reference for short wet-steam process of cotton fabrics with bifunctional reactive dyes. The optimal amount of Selilao agent was 20 g/L, while the soaping and rubbing fastness of the dyed cotton fabrics were both reached to 4-5 rating.

Effect of Polymerization Temperature on Cationic Emulsion Properties

The objective of this work was to analyze the effects of the polymerization temperature on the kinetic features(instantaneous and overall conversions)and colloidal characteristics[mean particle diameter,stabilities]in the semicontinuous seeded cationic emulsion polymerization of styrene and butyl acrylate.Azobis is obutyl amidine hydrochloride was used as an initiator.The surfactants wascetyl trimethyl ammonium chloride.The results showed that the final instant when the polymerization temperature of 85℃emulsion highest conversion rate,and the temperature of the emulsion particle size,centrifugal stability is the best,85℃emulsion in the emulsion anti-dilution and acid salt stability also showed excellent stability.