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采用吡啶甲酸反应基型活性染料雅格素藏青N—SG对蚕丝织物进行染色,研究了其在中性条件下对蚕丝织物的染色性能,讨论并明确了最佳的染色工艺.结果表明:温度上升,染料的上染率下降,而染料的固色率则随着温度的提高而上升,温度达到100℃时固色率最高;NaCl的加入有利于减少染料和纤维间的静电阻力,提高上染率;不加碱剂固色的情况下,染料质量浓度0.2 g/L时,最佳染色条件为NaCl质量浓度40 g/L,100℃染色60 min.雅格素藏青N—SG染蚕丝的皂洗色牢度达到4级,干摩擦色牢度达到4~5级,湿摩擦色牢度达到4级,各项色牢度均达到加工和服用要求. 相似文献
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T/R针织布活性翠蓝色花的防止 总被引:3,自引:1,他引:2
从代碱剂SG-A2和纯碱溶液的pH值稳定性、染料性能、染色温度和固色温度等方面,对T/R针织布活性翠蓝染色匀染性进行探讨.结果表明,在相同染色条件下(除75℃染色和55℃固色),采用Na2CO3固色,织物匀染性和色牢度要优于代碱剂SG-A2,染色最佳工艺为65℃染色30 min.代碱剂SG-A2和Na2CO,的最佳固色温度分别为55℃和60℃,固色30 min,匀染效果好. 相似文献
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无盐染色是减少废水中盐含量,提高废水回用率,减少废水排放的重要途径。在不进行前处理的条件下,使用自主开发的活性染料和碱剂对棉针织物和纤维进行低温无盐染色,研究了碱剂用量、染色温度、染料浓度和染色时间等因素对染色效果的影响,测定了染料固色率。结果表明,未经过前处理的棉针织坯布在25℃染色4~10 h,染色效果与经前处理的织物相同。染色后原棉纤维的染料固色率比常规染色工艺高5%以上,其可纺性优于常规染色工艺。扫描电子显微镜图像表明,原棉纤维染色后表面变得洁净光滑,形态结构无明显变化。 相似文献
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采用轧-烘-焙法对亚麻织物进行阳离子改性实验,对比分析了固色温度、碱剂种类、盐的用量、染料用量等单因素对改性和未改性亚麻织物的活性染料染色性能的影响,并通过正交实验优化得出活性染料对改性亚麻织物的最佳染色工艺条件:固色温度70℃,盐的用量20g/L,碱剂采用Na2CO3,用量为20g/L,染料用量为1.3%.测试了改性和未改性亚麻织物的耐洗色牢度,得出阳离子改性对亚麻织物活性染料染色后的耐洗色牢度无影响. 相似文献
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活性染料染锦纶色泽较鲜艳 ,染色牢度尤其日晒牢度较好 ,且可与中性染料、弱酸性染料拼染 ,因此 ,色谱的选择范围较大。该文探讨其染色机理、各工艺因素对染色结果的影响 ;并对中性浴染色法、酸性浴染色法 ,以及先中性或酸性后碱性浴染色法的实用性进行比较 ,指出艳蓝色活性染料以中性吸色碱性固色工艺效果为佳 ,其余活性染料则以酸性吸色碱性固色效果为好。由于活性染料染锦纶匀染性较差 ,必须采用匀染工艺和匀染剂染色 ,以获得良好的匀染效果。 相似文献
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AbstractThis article models and optimizes the effect of dyeing parameters on obtained color of fabric samples dyed with three cold bifunctional reactive dyes, namely, C.I. Reactive Yellow 145, C.I. Reactive Red 238 and C.I. Reactive Blue 235, in order to use them in color formulation. The studied dyeing parameters are electrolyte concentration, alkali concentration, liquor-to-fiber ratio and temperature of dyeing process. The influence of these parameters was analyzed for four different shades: 0.1%, 1%, 2% and 4%. Two criteria of evaluation are studied and optimized: the exhaustion and the fixation yields. Linear modeling of optimal concentrations of electrolyte and alkali according to the dye concentration was developed, allowing the calculation of optimal quantities which should be added to the dye bath for any dye concentration. Color coordinates and fastness (washing, rubbing and light fastness) of samples dyed with optimal conditions are also evaluated and discussed. 相似文献
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棉织物在二甲基亚砜/四氯乙烯(DMSO/PCE)染色体系中用C.I.活性红48染色,探讨了低碱冷冻预处理温度、时间和碱质量分数对上染率、固色率和织物强力的影响,同时研究了染色时棉织物上水和碱含量在纤维相和溶剂相分布的变化对染料上染率和固色率的影响。结果表明:低碱冷冻预处理能够提高棉纤维的可及度;经最佳条件(氢氧化钠质量分数8%、温度-10°C、冷冻2h)预处理的棉织物在DMSO/PCE体系中水和碳酸钠的含量均有不同程度的提高,C.I.活性红48上染率变化不大,固色率提高约3%,经、纬向撕破强力相比于未处理棉织物分别提高45%和20%。 相似文献
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ABSTRACTTo enhance the dye fixation of pad-steam dyeing with reactive dyes, we used five kinds of dyes and water–ethanol dyeing medium to investigate the hydrophobic effect in dyeing process. The results indicated that the higher the molecule weight per water soluble group, i.e. the stronger dye hydrophobicity, the higher the dye fixation rate. When dyed with hydrophobic dye, both the alkali and steaming time can be reduced to realize the saving of chemicals and energy. For the more hydrophobic C.I. Reactive Orange 16 (RO16), the appropriate sodium carbonate concentration is 20 g/L, which is 10 g/L lower than the 30 g/L of C.I. Reactive Violet 5 (RV5). Similarly, RO16 just needed 2 min of steaming time to obtain the maximum K/S value, while RV5 needed 3 min. Enhancing the hydrophobicity of dyeing medium can also increase the dye fixation rates and K/S values. The K/S values and fixation rates of fabrics dyed with RV5 increased up mostly by 31.2% and 14% via using ethanol instead of 32 vol.% water in dyeing medium, respectively. All the dyed fabrics exhibit good color fastness. 相似文献
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针对活性染料冷轧堆染色效率低、深浓色布面黑气重等问题,采用无盐连续轧-蒸染色工艺对纯棉、天丝/棉交织物进行染色。借助稳定性分析仪表征染液的稳定性能,将专用碱应用于SNE型活性染料轧-蒸染色,并与冷轧堆染色效果进行对比。结果表明,碱剂组成和时间均会影响染液的稳定性和扩散性;含混合碱的染液放置10 min时,其稳定性指数为0.72,是含专用碱剂和色丽牢染液的2.6倍和2.1倍;专用碱剂和色丽牢能够提高染液的扩散性能;经无盐连续轧-蒸染色的军蓝色、咖啡色纯棉织物表观色深Integ值较冷轧堆染色织物分别提高2.9和2.7,染色织物的色牢度大于等于3级,符合生产要求;该染色工艺同样适用于天丝/棉交织物,其生产效率高、表观得色深。 相似文献