活性染料低盐染色工艺探讨

根据活性染料特征值SEFR选择3类不同特征值的活性染料,每一类选3种,共计9种.分别对特征值高、中、低的3类染料进行低盐染色工艺实验.实验表明,SEFR值中等的一类染料适合进行低盐染色,其固色率均在70%左右,盐的用量为常规用量的1/4～1/3,浴比为10:1,其中以无水硫酸钠与柠檬酸钠2:1复配效果最佳.     

酸性媒介棕RH的合成工艺研究

酸性媒介棕RH是以4 硝基 2 氨基苯酚为原料经重氮化后与2,4 二氨基苯磺酸钠偶合制得的,染料的收率和质量如色光和强度与其工艺过程有密切的关系     

含铁锌硫酸废水处理酸性媒介染料印染废水的实验研究

通过向铁锌硫酸废水投加铁屑以提高废水中总铁浓度,并考察了所得铁锌硫酸废水处理酸性媒介染料印染废水的主要影响因素。结果表明:1 L硫酸废水投加16.6 g铁屑,控制反应温度30~40℃,20 min后,硫酸废水中总铁浓度达到5.2 g/L;同时铁锌硫酸废水处理酸性媒介染料印染废水的最佳条件:1 L酸性媒介染料印染废水投加150 mL铁锌硫酸废水,用石灰乳控制pH在9.0~10.0范围内,PAM的投加量为2.0 mg/L,则印染废水色度和COD去除率分别达到98%和90%以上,出水水质达到一级排放标准。     

羊毛低温染色的研究

本文采用乙醇胺予处理(简称MEA)及染浴助剂相结合的方法,对媒介染料羊毛染色进行了探讨。文中分析了MEA予处理羊毛对染色的影响;讨论了低温促染剂GF在媒介染料染色中的作用机理;确定了在85℃条件下进行低湿染色的工艺。该工艺与常规染色相比,提高了上染率,减少了纤维损伤,同时改善了纤维性能,提高了折皱回复角。     

羊毛媒介染料染色解决铬污染之发展研究现状

就羊毛媒介染料染色铬污染问题叙述了铬离子对环境及人体的危害 ,通过介绍目前在此问题上的研究现状及成果 ,总结出了从染色方面解决铬污染问题的三种思路 .     

低温压力容器及低温低应力容器的设计探讨

主要介绍了低温压力容器的定义、失效模式及设计中的注意事项,详细分析了形成低温压力容器主要失效模的低温脆裂的必要条件,从而在低温压力容器的设计过程中,通过对设计温度、低温材料选用、结构优化设计、焊接工艺、无损检测等方面的技术优化,确保低温压力容器的使用安全。     

氮三乙酸铬(Ⅲ)与酸性媒介橙3混配络合物的生成反应动力学及其机理(英文)

用分光光度法研究了在50℃,pH为。2．8～3．7,有0．1mol·L-1NaClO4存在的条件下,Cr（NTA）（H2O）2与酸性媒介橙3（4-[4,5-二氢-4[2-羟基-5-硝基苯基）偶氮]-3-甲基-5-氧代-1H-1-基]苯磺酸）（H3RL）的混配络合物生成反应动力学．动力学与薄层色谱分析结果表明,该反应先经历一个快速的中间体形成过程,随后发生环闭合反应．在此中间体内,酸性媒介橙3起到了单啮配体作用,它的酚氧／酚基氧原子与Cr（Ⅲ）形成了配位络合物。     

羊毛纤维染色性能的研究

对羊毛纤维的低温染色工艺进行了研究,并与常规的染色工艺进行了比较.实验结果表明,采用酸性蛋白酶处理与染色同浴进行可以实现羊毛的低温染色,节约能源,缩短染色时间,提高生产效率,降低环境污染.同时对羊毛的强力损伤很小,此工艺在技术上是可行,经济上是合理的.     

亚麻纤维接枝染色同浴工艺探讨

以高锰酸钾和柠檬酸氧化还原体系作为引发剂,用丙烯酰胺单体对亚麻纤维进行接枝改性,并且同浴加入活性染料对亚麻纤维进行染色处理,主要研究接枝温度、时间、pH值对染料上染率的影响。     

Low Temperature Dyeing of Cashmere Fibers and Products

A special designed multi-functional dyeing auxiliary, SFR503, is adopted in mordant dyeing process for cashmere fibers, sliver and fabric. The results of decreasing dyeing temperature, shortening the dyeing period, reducing the fiber damage and improved quality of the cashmere have been obtained. The percentage of dyeing exhaustion and color fastness of final products were further improved in this regards. A suggested technique, bath ratio, dyeing process curve and dye recipe were raised in the paper. SFR-503s swelling, wetting, leveling, brightening effect for cashmere during dyeing process were discussed.     

真丝绸低温染色原理与实践

近十年来,真丝绸的低温染色工艺取得了进展,基本上解决了由于高温染色产生的“灰伤”问题。     

Dyeing Performance of Soybean Fiber Treated with Low Temperature Plasma

IntroductionSoybean fiber belongs to regenerated plant proteinfiber and is for med in the way of wet spinning . Themonofilament of the soybean fiber is slender (0.851.0tex and1.1 1.5dtex) , less specific weight , highstrength and elongation, nice acid-and-alkali resistivity ,softness si milar with pashm, meek shine like silk, moistureabsorption and conduction of cotton fiber , amenity andtempered features of wool . There are no special reportsoverseas on the dyeing processing approach of the s…     

低温等离子体技术在棉织物染整加工中的应用进展

低温等离子体技术作为一种清洁、高效、无污染的加工技术在纺织染整加工中越来越受到关注.本文通过调研国内外染整技术前沿动态,系统阐述了低温等离子体技术在棉织物染整加工各个主要环节(前处理、染色、印花、后整理)中的应用进展,并指出低温等离子体技术在棉织物染整加工中的未来发展趋势.     

Influence of Low Temperature Dyeing Accelerant on Acrylic Fiber Dyed with Cationic Dyes

The dyeing behavior of cationic dyes to acrylic fiber with self-made low temperature dyeing accelerant was investigated in this study.Compared with conventional dyeing,the acrylic yarn was dyed with Cationic Turquoise Blue X-GB at 85℃ in the presence of accelerant and absence of accelerant,respectively.The influence of low temperature dyeing accelerant on the dyeing mechanism of acrylic fiber dyed with cationic dye was analyzed through kinetics and thermodynamics study.The results show that adding dyeing accelerant can heighten the equilibrium dye-uptake,dyeing rate constants,diffusion coefficients,and shorten half-dyeing time for acrylic fiber dyed with cationic dyes.Furthermore,the partition coefficient,the standard affinity,and the dye saturation value also increased in the dyeing at 85 ℃.     

聚乳酸织物碱性染色工艺探讨

为提高生产效率并简化聚乳酸(polylactic acid,PLA)织物的传统染色工艺,利用耐碱的分散染料在碱性条件下对PLA织物进行染色。研究了处理液pH值对PLA织物减量的影响,以及PLA织物的中性染色及碱性染色产品的K/S值及减量率;讨论了碱性染色温度和碱剂用量对PLA织物K/S值和强力的影响;对比了PLA织物有无还原清洗工序的碱性染色产品的色牢度,以及碱性染色与传统染色的工序、配方及产品的颜色深度。结果表明:随着处理液pH值的升高,织物的减量率逐渐增加且碱性条件下更有利于PLA织物的减量;碱性染色织物的减量率及K/S值均高于中性染色产品;随着染色温度的升高和碱剂用量增大,染色织物颜色逐渐变深且断裂强力下降;PLA织物碱性染色产品色牢度好且染色后无需还原清洗;碱性染色比传统染色方法所得织物的颜色更深且碱性染色工艺更加节省能源、水以及时间。     

ND－900酸性染料匀染剂的性能及应用

讨论了几种新型匀染剂的性能，并采用弱酸性染料，酸性含媒染料等在精纺毛织物上做了大量的匀染性实验工作，取得了较好的效果．     

Application of Acid Dyestuffs with Different Molecule Structure in Combined Dyeing and Finishing of Cotton Fabric

Simultaneous dyeing and durable press finishing of cotton fabrics with acid dyes bearing the different molecule structure and durable press finishing agent （DP agent abbr. ） based on modified DMDHEU were investigated by using the pad-dry-cure process. Some factors affecting the process, such as structure of acid dyes, DP agent, catalysts and curing temperature were discussed. The dyed and finished fabrics were evaluated with respect to color strength, fixation, crease recovery angle, breaking strength and fastness properties. The results indicate that structure of acid dyes has a striking effect on the color strength of dyed and finished cotton fabric. The color strength and dry crease recovery angle of dyed and finished cotton fabric increases, whereas breaking strength decreases with increasing concentration of DP agent. It is necessary for ammonium nitrate to serve as catalyst. It is found that relatively satisfactory properties of dyed and finished cotton fabric can be obtained with appropriate adjustment of treating conditions.     

多聚磷酸改性沥青及其混合料低温性能研究

采用常规低温性能试验和Superpave低温性能试验,研究了不同类型多聚磷酸(PPA)改性沥青胶结料的低温性能,对比分析了沥青胶结料低温性能评价指标之间的相应关系,并采用小梁弯曲试验和冻断试验验证了沥青混合料的低温抗裂性能,研究了沥青胶结料与混合料低温性能之间的相关性.最后对不同低温性能评价指标的合理性和不足之处进行了较为深入的分析.结果表明,PPA掺入减小了沥青的延度和劲度模量,老化对PPA改性沥青低温性能的影响显著;应变能密度指标表明PPA可以改善沥青混合料低温抗裂性;PPA复配SBR的改性沥青低温效果要优于SBR改性沥青;冻断温度与冻断强度能较准确地评价多聚磷酸改性沥青混合料的低温抗裂性能.     

Determination of Absorbable Organic Halogen (AOX) Concentration in Wool Dyeing Effluent of Lanasol Dyes

In this paper, the absorbable organic halogen (AOX) amounts in the effluents from Lanasol reactive wool dyeing were determined using DIN 38409 H14 methods and compared with the remaining chromophore concentratlons which were determined spectrophotometrically. It was found that the dyes remaining in the dyeing effluents did result in AOX concentratiom. By measuring the adsorption rates of Lanasol dyes on activated charcoal at different temperatures and pH values, the maximum adsorption on activated charcoal and optimum adsorption conditions of the Lanasol reactive dyes were determined. The experiments showed that the AOX values of the dyes measured by these two methods were not in agreement.he reasons for this observation are discussed.