Influence of Spinning Technology on Dye Uptake of Modified Polypropylene Fiber

By adding small amount of olefin polymer additive, the dyeability of polypropylene fiber can be improved.Research results show that the improvement of dyeing performance of modified PP fiber is mainly due to the formation of looser structure of PP matrix and the microchannels among additive particles in blended fiber. The dye uptake of drawn fibers decreases with drawing ratios obviously and changes with temperature of heat plate and heat roller a little.

Modeling of the Dyeing Uptake Rate for Direct Dyestuff on Cotton in Batch Dyeing Process Based on Grey System Theory

The grey system theory,with the characteristics of fewer modeling data and higher accuracy,was employed to model the batch dyeing process for the purpose of accurate online control.The GM(1,1) and GM(0,N) models of the grey system theory were discussed for their feasibilities of modeling for batch dyeing process.The combination of direct dyestuff Fast Red F3B on cotton was chosen as a representative of the common dyeing method for describing the modeling process.Firstly,the GM(1,1) model and the GM(1,1) combined with GM(0,N) model were employed to model the equilibrium percentage of dyeing uptake rate.Secondly,an integrated dyeing uptake rate model with three factors(temperature,salt concentration,and pH) was established based on the adsorption rate equation.Experimental results show that this model has higher accuracy and better generalization ability,which can predict the results of batch dyeing process.Due to the application of grey system theory,the model has a lot of advantages,such as being easy to determine the parameter value and small amount of calculation.So it can also be suitable for the same type of combination of dyestuff-fabric by changing the parameters value only.

5-(二甲氨基)-2-甲基-5-氧戊酸甲酯在超临界二氧化碳流体染色中的应用

为提高部分分散染料在超临界二氧化碳流体(ScCO 2)中上染率,补全ScCO 2分散染料染色色谱,以5-(二甲氨基)-2-甲基-5-氧戊酸甲酯作为分散染料ScCO 2染色助溶剂,通过实验探究了染料与助溶剂质量比、染色温度、染色压力对分散染料上染率的影响,并对染色后涤纶纱线的力学性能、耐摩擦色牢度、耐日晒色牢度以及耐皂洗色牢度进行表征。结果表明:纱线得色深度明显提高,且未对纱线色相、饱和度产生明显影响;分散黄163、分散蓝60染料滤饼上染率分别为21.61%、34.25%;加入助溶剂后,分散黄163、分散蓝60的ScCO 2染色上染率分别可达57.62%、70.97%;染色纱线得色深度显著提高,染色后纱线的K/S值分别由4.5、5.9提升至12.0、12.2;最佳染色工艺为:染料与助溶剂质量比1∶20,染色温度130℃,染色压力27 MPa;加入助溶剂后染色纱线的力学性能、色牢度符合生产需求。

提高水性聚氨酯/聚酰胺超纤革的染透性

为解决阴离子型水性聚氨酯/聚酰胺超细纤维(WPU/PA)合成革染透性差的问题,探究了酸性蓝260在WPU与PA两组分之间的分配关系。选用咪唑类和吡咯烷酮类透染剂对水性聚氨酯超纤革进行处理,测定染料上染率、K/S值,观察染色革截面的透染情况,并分析了透染剂的作用机理。结果表明:染料在WPU与PA纤维中的分配比为1∶9;水性聚氨酯超纤革预浸轧咪唑类和吡咯烷酮类透染剂(体积比1∶1)的水溶液,可以抑制WPU的凝胶化倾向,有效解决染色白芯问题,上染率也有所提高。在染色后期添加硫酸铵可以提高水性聚氨酯超纤革的上染率及K/S值。

Influence of the Specific Surface of Polyester Supermicrofibre on the Dyeing Properties with Disperse Dyes

The influence of the polyester supermicrofiber specific surface on the dyeing properties of these fibres is studied with the purified disperse dye in this study. How the dyeing properties vary with the specific surface is shown. The dyeing properties mainly include dye saturation value, affinity, rate of dye uptake and equilibrium dye uptake etc. The relation between dye sorption behavior and the specific surface of the supermicrofibres is discussed.

Study on Dyeing Behavior of Modified Flax

The study of dyeability of the modified flax that uses dye-uptake to reflect its modifying effect is reported in this paper. The optimal technological condition is that the concentration of the modifying agent is 4 g/l, and NaOH is 6 g/l at liquor ratio of 1∶30 for 60 min. at 85℃.Dyeability include uptake rate and color fastness. Dye-uptake of the modified flax is twice more than that of the unmodified. And their color fastness doesnt fall and some of them raise 0.51 level.

Study on Dyeing of a Novel,Pro-environment Polylactic Acid (PLA) Fiber Yarn

Seventeen disperse dyes including anthraquinone, azo, methine, nitro, and quinoline dyes were applied to dye the Polylactic Acid (PLA) yarns at different conditions, and the dyebath exhaustion was determined. The result shows that C.I. disperse red 167, C.I. disperse orange 30, and C.I. disperse blue 284 have dye-uptakes greater than 80%. Therefore, they can be used as the three principal dyes for PLA yarns. The experiment discovered that the dyes, because of their Monoazo and ester group contents, have a higher dye-uptake for the PLA fiber. The research on the optimization of dyeing techniques suggests that PLA yarn can obtain a high level of dyeing effectiveness at the following conditions: pH 4-5, dyeing temperture 110℃ for 30-40 min. Color fastness to perspiration, and water-washing fastness increased 1-1.5 by the addition of the abstergent FB during the reduction clearing.

Effects of Auxiliary Agents on the Dyeing of Polyester Super Microfiber

The influences of various auxiliary agents on solubility ofthe disperse dye were studied.In the presence of the auxiliary agents during the dyeing of polyester microfi-ber,the dye uptake and migration were measured andeffects of these agentes were discussed.The effect of mix-ture of these agents was also studied in an attempt to im-prove the levelling and depth of polyester super microfi-ber dyeing.

液体石蜡非水介质体系中涤纶织物的分散染料染色性能

为了促进节水低碳的涤纶分散染料非水介质染色技术的发展,研究液体石蜡非水介质体系中涤纶织物的分散染料染色性能。结果表明,分散染料在液体石蜡(LP)介质中的溶解度大于十甲基环五硅氧烷(D5)介质,以致分散染料在LP非水介质体系中染色的得色量不及在D5非水介质体系中的得色量;微量水能够显著提高分散染料非水介质体系染色的得色量,当加水量为50%(omf)时,增效作用最显著,过多的水量对匀染性不利;LP非水介质体系染色织物的色牢度与常规水浴染色和D5非水介质体系染色织物的色牢度相仿。

利用分散蓝60对涤纶进行超临界流体染色的实验研究

超临界流体染色是近年来提出的可以真正实现无水染色及从源头上解决染色工业水污染问题的一种新的染色工艺。为了对该工艺的染色过程、适宜的操作条件及可行性进行研究,在自建的高压染色设备上,利用分散蓝60对涤纶进行超临界流体染色实验,考察上染率及染色深度K/S值随操作压力、温度和染色时间的变化规律,进而确定出最适宜的工艺操作条件为:压力28MPa,温度120cC和染色时间80min。通过实验过程及对染色结果的牢度评价,充分显示了超临界流体染色工艺的可行性和优越性。

微波处理对木材染色性能的影响

以25mm厚杨木、桦木、柞木厚板为研究对象,进行微波处理,通过改变木材初含水率、辐射时间和微波辐射强度,以木材真空加压浸渍处理得到的增质率和上染率为评价指标,研究微波处理条件与木材染色性能的关系。结果表明:木材的增质率和上染率在含水率为30%时最大,并随初含水率的增大而减小,随微波处理时间的延长和强度增大而增大。

微悬浮体染色技术在羊毛染色中的应用

采用Lanasol系列染料以微悬浮体染色工艺对羊毛纤维进行染色,比较了微悬浮体染色和传统染色工艺下Lanasol染料对羊毛纤维的染色性能以及染品的损伤程度。结果表明,采用微悬浮体染色工艺能显著缩短羊毛的染色时间,减少纤维在染色过程中所受的损伤,节约能源,且其上染百分率和固色率较传统染色工艺高,染品色泽也较鲜艳。

超细涂料染色工艺研究

对超细涂料染色工艺进行探讨 ,确定织物阳离子改性的最佳工艺条件 ,并对超细涂料的上染率、染色效果 (染色深度 摩擦牢度 皂洗牢度等 )

紫外线吸收剂对涤纶的上染及其紫外线吸收性能

为研究紫外线吸收剂对涤纶织物吸收紫外线性能的影响,将5只苯并三唑类紫外线吸收剂经分散后用高温高压浸染法使其上染到涤纶织物上,以残液法测试紫外线吸收剂对涤纶的上染率,用紫外线透过率表征织物的紫外线吸收性能。结果表明：选用的紫外线吸收剂可以在130℃下保温40～60 min上染涤纶织物,紫外线吸收剂结构、分子质量、上染温度和用量都会影响其对涤纶的上染率,分子质量适中、芳环较多、疏水性基团比例较高的紫外线吸收剂对涤纶的上染率较高;上染率较高的紫外线吸收剂能更明显地改善涤纶织物的紫外线吸收性能,上染率不高但分子中含有2个分子内氢键螯合环的紫外线吸收剂也能明显提高涤纶织物的紫外线吸收能力。

氧和氮等离子体改性细旦涤纶的清洁工艺比较

该文对氧、氮低温等离子体改性细旦涤纶进行了研究，分别探讨了氧、氮等离子体放电参数对提高细旦涤纶上染率的影响，得出了２ 种工艺的最佳放电参数。实验结果表明：经氧、氮等离子体改性后，细旦涤纶的上染率分别提高了１７ ％ 和５ ％ ，说明氧等离子体改性可显著减少印染废水中的污染物排放量，有利于环境治理，氮等离子体改性效果次之。

蚕丝织物的诃子色素染色工艺

研究了染色工艺条件对蚕丝织物的诃子色素直接染色上染百分率的影响,以及媒染剂质量分数和染色方法对蚕丝织物表观色深的影响,测试最佳染色工艺条件下染色蚕丝织物的颜色特征和色牢度。结果表明,诃子色素直接染蚕丝织物的最佳工艺条件为p H4,保温染色温度85℃,保温染色时间40 min;氯化铈、氯化镧、硫酸铝作媒染剂,最佳染色方法为后媒染色法,最佳质量分数为4%(o.w.f),浴比1︰50;氯化钙作媒染剂,最佳染色方法为同浴媒染法,最佳质量分数为2%(o.w.f),浴比1︰50。媒染剂影响织物的颜色特征值,媒染染色可提高染色蚕丝织物的色牢度,丰富染色织物的色谱。

醋酸纤维的染色性能研究

对醋酸纤维采用分散染料、阳离子染料及活性染料进行染色，研究了染料类型、温度、pH值、电解质等因素对醋酸纤维上染百分率的影响。结果表明：E型和SE型分散染料在85℃、pH值5-6的条件下上染百分率最高；阳离子染料在中性条件下的染色效果最好；双活性基活性染料染色的最佳工艺条件为温度85℃，硫酸钠50g／L。

藤材染色中活性染料上染率的研究

选用艳红X-3B和嫩黄X-6G两种活性染料对省藤和黄藤藤材、藤皮染色,研究活性染料对两种藤不同试样的上染性。分析了原料的不同处理方式、染液浓度、染色时间、染色温度等对藤材上染率的影响,比较了省藤和黄藤与毛白杨、红松和竹材间上染率的差异性。结果表明:活性染料对藤材可上染;藤皮经打磨、酸、碱处理均不能上染;活性染料上染率最佳的染色条件:染液质量分数0.5%,染色时间2 h,染色温度40℃;省藤、毛白杨、红松和竹材的上染率差异不明显,黄藤上染率最低;同种藤染色,活性嫩黄X-6G上染率优于活性艳红X-3B;热水抽出处理后,藤材上染率略有降低。

壳聚糖改性棉织物的茜草染色性能

利用天然壳聚糖对棉织物进行阳离子改性,提高了茜草染料的染色性能。通过一系列的实验探讨了壳聚糖阳离子改性对棉织物手感的影响和改性后棉织物对天然染料茜草上染能力、上染率和染色牢度的影响。最终确定了壳聚糖阳离子改性棉织物茜草染色的最佳工艺:壳聚糖改性液质量分数为25%,茜草染液浓度15 g/L,染色40 min。在此工艺下,其上染率可提高96%。

改性共聚酯纤维的染色性能

为提高聚酯纤维的染色性能,采用阳离子染料对ECDP纤维进行染色,系统研究纤维的染色性能。结果表明:ECDP纤维的等温吸附曲线属于L型(Langmuir型);与常规PET、CDP及腈纶相比,其染色饱和值较高,染色深度可达到染PAN纤维的水平;ECDP纤维的上染曲线均呈S型,纤维在较低的温度下就有一定的上染率,最终上染率也较高;染浴的pH值应控制在4～5;升高温度或延长保温时间都能增加纤维的上染率。