新型碱剂RS-3518在活性染料浸染固色中的应用探讨

分别应用新型固色碱剂RS-3518和纯碱对活性染料浸染染色进行了试验,从染色深度K/S值、各项色牢度、上染速率的对比试验中,讨论了新型碱剂RS-3518在活性染料染色中代替纯碱作为固色刺的可行性,并通过正交试验找到优化的固色工艺.实践证明:碱荆RS-3518完全可以代替纯碱,可以获得与使用纯碱相当或更高的K/S值和染色牢度,且上色缓慢,起到匀染作用.     

新型液体固色碱的研制及其在浸染中应用

本文根据活性染料固色原理及染色自动配料要求设计了活性染料液体固色碱的主要组分,通过不同碱剂对活性染料固色K/S值影响试验,筛选适用于液体固色碱不同组分的碱剂,并添加相应的药剂加以复配,制备一种活性染料液体固色碱,并应用于棉织物的活性染料浸染.实验结果表明:该液体固色碱固色用量少,约为纯碱的1/13-l/4,固色牢度好,操作方便,适用染色自动配料等优点,可以代替传统固色碱剂-纯碱.     

微波在羊毛染色中的应用研究

本文采用丽雅伦活性染料、兰纳素活性染料和派拉丁1:1金属络合染料对羊毛织物进行轧染微波固色。利用单因素实验和正交实验设计考察了半乳甘露聚糖用量、尿素用量、亚硫酸氢钠用量、染浴pH值、微波辐射功率、固色时间和固色前堆置时间对表观得色量K/S值和固着率的影响,得到了羊毛轧染微波固色的最佳工艺。分析了羊毛织物经微波固色的匀染性。     

聚乳酸/丽赛/竹纤维混纺织物深色染色工艺研究

在聚乳酸纤维混纺织物的二浴法染色中,以表观色深K/S值作为衡量染色效果的依据,研究了第一浴染色工艺曲线、温度、pH值、时间对织物染色性能的影响;以染料的上染率K/S值为依据,研究了第二浴活性染料染色工艺曲线、温度、时间对织物染色性能的影响。提出了较佳的聚乳酸混纺织物深色染色配方及工艺流程。     

大豆/PTT微胶囊分散染料/活性染料一浴一步法染色

探讨了纯碱和氯化钠用量、染料浓度对微胶囊分散蓝2BLN/活性染料(活性蓝KN-R、活性深蓝B-2GLN和活性蓝K-3RL)一浴法染色大豆/PTT混纺织物表观色深K/S值的影响,测定了不同染色工艺对染色织物牢度的影响.结果表明:当染料总用量为2％(o.w.f.),纯碱用量1g/L,氯化钠用量20 g/L,95℃条件下保温30分钟时,可使大豆/PTT混纺织物获得较高的表观色深.     

释酸剂在分散/活性高温高压同浴染色中的应用

在T/C混纺织物高温高压同浴染色工艺中,选择有机酰胺、有机酯和有机卤代物为释酸剂与碱剂组成固色盐,使染浴pH在染色过程中随温度升高而降低,提供满足分散/活性染料固色的条件,完成分散活性高温高压的同浴染色。     

新型碱剂S在活性染料浸染中的应用

新型碱剂S是主要用于活性染料固色的一种新型碱剂.本文比较分析了浸染中新型碱剂S的用量、固色温度、固色时间以及元明粉用量对染色效果的影响、通过正交试验优化了新型碱剂S的固色工艺,并得出以下结论:与传统纯碱固色工艺相比,新型碱剂S的优化工艺染色试样表面得色深,色彩鲜艳度好;各项色牢度达到纯碱固色工艺效果;缩短染色时间15分钟,降低固色温度10℃,节省能源消耗.     

新型碱剂E在活性染料染色中应用

新型碱剂E替代传统固色剂是活性染料染色的新技术之一,本文比较了新型碱剂E和纯碱固色的染色效果,研究了新型碱剂E固色时影响染色效果的因素,对染色工艺进行了优化,结果表明:优化的一浴法染色工艺C所得染色织物的表面得色高,鲜艳度好;各项色牢度达到或超过常规纯碱染色工艺;优化工艺缩短了染色时间30分钟,简化了操作,节省能源消耗。     

固色代用碱在纱线染色中的应用

本文比较了代用碱和纯碱在活性染料染色中的效果和生产成本.结果表明:使用代用碱固色,布面色光缺红5％,各项牢度指标均能达到常规纯碱的固色效果;固色时间也无显著差异.但使用代用碱固色用量少、操作方便、易清洗,能降低成本约15％左右,经济和环境效益显著,可以替代传统纯碱固色.     

涤/棉针织物的一浴练染效果探讨

为了分析涤/棉混纺织物一浴练染工艺的可行性,对一浴练染工艺的染色效果进行了探讨。结果表明:涤/棉混纺织物一浴练染工艺中,分散/活性染料二步染色法比分散/活性染料一步染色法更有利于染料的上染、得色量及提升性的提高,有利于色牢度和匀染性能的提高。一浴练染工艺中分散/活性染料二步法的染色K/S值、耐洗牢度、摩擦牢度均与涤/棉传统染色工艺相接近,提升性比传统工艺稍有差距;一浴练染工艺分散/活性染料二步染色法与传统染色工艺比较对色调没有影响;操作误差对一浴练染的重现性影响较小。     

活性染料对莲纤维的染色性能研究

为了了解活性染料对莲纤维的染色性能,采用单因素分析法,在改变温度、浴比、时间、元明粉浓度、纯碱浓度等工艺条件下,分别采用两种不同类型的活性染料对莲纤维进行染色,并测试其上染率、固色率、耐皂洗色牢度和耐汗渍色牢度。结果表明:活性大红X-3B上染莲纤维的最佳染色工艺为染色温度40℃,染液浴比1∶40,染色时间60 min,元明粉质量浓度20 g/L,纯碱质量浓度30 g/L;活性嫩黄X-7G上染莲纤维的最佳染色工艺为染色温度40℃,染液浴比1∶50,染色时间60 min,元明粉质量浓度10 g/L,纯碱质量浓度20 g/L;活性染料耐皂洗色牢度和耐汗渍色牢度都在3级以上。     

Application of polycarboxylic acid sodium salt in the dyeing of cotton fabric with reactive dyes

In this study, the effects of polycarboxylic acid sodium salt on the dyeing of cotton with reactive dyes were evaluated by measuring and comparing the K/S values and dyeing fastnesses of the dyed cotton fabric samples. Results showed that the K/S value and dyeing fastness of cotton fabrics dyed with polycarboxylic acid sodium salt, substituting inorganic salts as exhausting agent were close to that of with sodium chloride when dip‐dyeing process was used. While, in pad‐dry dyeing, the K/S value of cotton fabric samples dyed with polyacid salts as exhausting agent was higher than that of with sodium sulfate, and the dyeing fastnesses of these samples were nearly the same. The dyeing mechanism of cotton fabric with reactive dye, using polycarboxylic acid sodium salt as exhausting agent was analyzed. The dyeing exhausting mechanism of reactive dye seems different when the inorganic salt and polycarboxylic acid sodium salt were used as exhausting agent in the dyeing of cotton fabric with reactive dye. The polycarboxylic acid sodium salt, as weak electrolyte, increased the dye‐uptake of reactive dye on cotton fabric not only by screening negative charges on cotton surface, but also by the effect of salting‐out or hydrophobic combination. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007     

乙醇-水体系中活性染料无盐低碱染色技术的探索

采用活性染料在乙醇-水混合溶剂体系中对棉织物进行染色、固色,探讨了碱预溶胀和一浴两步法两种染色方式及固色碱的种类、浓度、固色温度等对染色性能的影响,并与传统染色工艺比较。结果表明：在乙醇-水染色体系中,随着乙醇比例的增加,上染率增加;使用氢氧化钠和碳酸钠两种碱预溶胀棉织物后,相同浓度下,碳酸钠的固色率高于氢氧化钠,而且氢氧化钠的固色率随着浓度的增加而减小;一浴二步法染色中,采用80%体积分数的乙醇-水体系染色更符合实际生产的需求,氢氧化钠的适宜固色浓度为2g/L,碳酸钠的适宜固色浓度为3g/L;在乙醇水体系染色中,不需加盐,碱使用量为常规染色的1/10时,上染率为97%,固色率比常规染色高出9%~20%。     

多活性基低温活性染料的应用工艺探讨

本文介绍了多活性基低温活性染料的染色工艺,探讨了温度和碱剂对染色深度的影响.采用该工艺,织物的染色深度优于中高温条件,具有良好的配伍性,各项牢度也能达到传统工艺要求.该工艺不但能够减少能耗和助剂成本,也减小了污水处理的压力.     

Dyeing of cotton and jute with tea as a natural dye

Cotton and jute fabrics were dyed with an aqueous extract of tea, containing tannins as the main colorant species. The dyeing was carried out with and without metal salts as mordants, using three different dyeing methods: pre-mordanting, meta-mordanting and post-mordanting. The resulting wash and light fastnesses of the dyed fabrics were good to excellent. The colour of the fabrics was investigated on computer colour matching system in terms of K/S , and CIELAB colour-difference values. Deep shades ( K/S = 3.9) were obtained for jute in acidic media, while cotton fabrics could be dyed in medium depths ( K/S = 2.0) under identical conditions of dyeing.     

Dyeing behaviour of lyocell fabric: effect of fibrillation

To understand the effect of fibrillation in dyeing, non-fibrillated lyocell fabrics and fibrillated lyocell fabrics were dyed with different types of reactive dyes. Their exhaustion, fixation and K/S values were measured and compared. It was observed that fibrillated lyocell shows lower visual colour yield than non-fibrillated lyocell, independent of the exhaustion and fixation. It was also observed that some bifunctional reactive dyes, because of the location of reactive groups and flexibility of their structure, reduced fibrillation of lyocell through crosslinking. It was shown that defibrillating fibrillated lyocell with a cellulase enzyme increased the visual colour yield. Non-fibrillated lyocell fabrics after dyeing were subjected to a hydroentanglement treatment to create a fibrillation effect. These properties suggest that the lower visual colour yield of fibrillated lyocell is not mainly attributed to any change in fibre properties of the fibrils, but as a result of the light scattering from the fibrillated fabric surface.     

Optimal dyeing systems for resistance to the physical strength loss of the PLA/cotton blended fabric

In this study, optimization of disperse/reactive dyeing systems for resistance to the physical strength loss of Poly(lactic acid) (PLA)/cotton blended fabric was investigated. The blended fabric underwent a two‐bath, two‐stage dyeing process in which the PLA component of the blended fabric was dyed using two disperse dyes, followed by the cotton component being dyed with six reactive dyes containing different reactive groups—dichlorotriazine, monochlorotriazine, sulphatoethylsulphone, monofluorotriazine, monochlorotriazine/sulphatoethylsulphone, and monofluorotriazine/sulphatoethylsulphone groups. The optimal dyeing systems were established according to the fixation rate of the dyes, tear/tensile strength loss, and SEM micrographs of the fabric. To avoid the strength loss during the disperse/reactive dyeing process, the recommended disperse dyeing conditions were 110°C, pH 5 for 20 min, whereas the reactive dyeing conditions should be temperature ≤60°C and alkali concentration ≤3 g/L. In this regard, reactive dyes containing monofluorotriazine and monofluorotriazine/sulphatoethylsulphone groups were especially suitable for the reactive dyeing systems. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

壳聚糖在活性染料染羊毛织物上的应用工艺探讨

本文对壳聚糖处理过的羊毛织物用活性蓝BET染色工艺进行了探讨.讨论了壳聚糖脱乙酰度、壳聚糖浓度对羊毛染色性能的影响,并比较了经壳聚糖处理与未处理羊毛染色性能的差异.结果表明,提高处理液中壳聚糖的浓度或脱乙酰度都能提高活性染料的固色率,提高织物表面色深值K/S,而且对染色样的各项牢度影响不大.