棕色和黄色包装纸的染色

牛皮包装纸和纸板染色的合适染料品种为直接染料或碱性染料,合适染料组合为棕色+黄色+蓝色或黑色,或红色+黄色+蓝色或黑色。牛皮箱板纸调色程序可根据纸张的本色与目标值的差异确定所需的染料品种,选用一种棕色染料和一种黄色染料配合调色,做一系列不同染料用量下的抄片,检测其色相变化,在CIE-L*,a*,b*色相图中画出纸张用该种染料染色后的色相变化趋势曲线。根据染料的色相变化趋势曲线,通过作图配色法调整染料配比和用量,直到达到目标a*,b*值。最后按比例添加棕色、黄色、蓝色或黑色染料,调节纸张的亮度L值。     

对箱板纸中颜料染色及其参数控制的探讨

研究发现纸张生产过程中颜料可以代替染料来进行染色,颜料具有低用量、好的遮盖率、良好的稳定性和低成本等优点。该文介绍了染料染色的缺点和颜料染色目前的研究状况,并探讨了植物纤维打浆度、AKD、接触时间和pH对颜料染色的影响。通过实验,打浆度可以对染色结果造成一定的影响。其色相指标L*、a*、b*值都有一定的变化规律。加入红色、黄色和橘黄色颜料后,纸张分别朝着偏红、偏黄和偏橘黄色方向发展。最佳打浆度都为44°SR。AKD增加颜料的留着。红色和黄色颜料的最佳接触时间为6min,而橘黄色颜料的最佳接触时间为4min。红色颜料最佳pH为5.5,黄色、橘黄色颜料最佳pH都为6。因此三者都适合在酸性条件下进行染色。     

阳离子型固色剂在纸张染色中的应用

采用Cartasol Blue 2RL liquid直接染料对短纤漂白硫酸盐浆进行染色。研究了纸浆浓度、打浆度、温度、染色时间、染料用量对染色效果的影响。利用优化的染色工艺分别研究阳离子聚丙烯酰胺、阳离子淀粉及硫酸铝的固色性能以及它们之间的协同效应。结果表明：随着纸浆打浆度和染色浆浓增加,纸张色度均有所提高;染料用量、温度和时间的提高也能增加纸张色度。Cartasol Blue 2RL liquid的最佳染色工艺为打浆度38°SR、浆浓2．0％、温度40℃,染色时间15min。结果还发现：随着阳离子聚丙烯酰胺及阳离子淀粉用量增加,其固色性能提高,且阳离子聚丙烯酰胺、阳离子淀粉的固色性能明显好于硫酸铝;此外三者的协同效应也很明显。     

纸张着色剂及着色方法介绍

着色剂可分为染料和颜料;所用较多的合成染料分为:酸性染料、碱性染料、直接染料,并对这三类染料做了相关介绍;纸张的着色方法可分为五类:浆内着色、表面着色、浸渍法、涂布法、喷淋染色;纸张着色受浆种、打浆度、胶料与矾土、填料、温度、pH值、造纸时所添加化学助剂、着色时所用设备方面的影响。     

轻型胶版纸黄色染料染色的应用实践

纸张染色就是在浆料中加入某些染料或者色料。使其选择性地吸收部分可见光,反射我们所需要的色泽,这一过程称为染色或调色。纸张染色受浆料种类及其性质、染料种类及其性质、用量、染色方法以及抄纸过程中各项物化环境等因素的影响．其染色过程非常复杂：特别是轻型胶版纸,因其颜色呈淡黄色,色泽调整较柔和,不刺眼,适于人们阅读,避免长时间看书造成的眼疲劳。因此,黄色染料的选择将会对成纸的染色质量以及染色成本有很大的影响。笔者对轻型胶版纸浆采用固体染料A与液体染料B和C这3种黄色染料的染色效果进行了比较。找到了最适合轻型胶版纸的黄色染料。     

直接染料和阳离子染料对棉和苎麻的染色差异性

用直接染料和阳离子染料分别对棉和苎麻织物进行染色,测定了染色织物的L*a*b*值,并计算了同一染料在相同条件下对两种织物的彩度差值、色差值和K/S差值。结果表明,几种染料对棉和苎麻的染色存在不同程度的差异性,用直接染料和阳离子染料染色的棉织物的K/S值和彩度值明显高于苎麻织物;使用直接耐酸大红4BS、直接枣红GB、直接冻黄G、直接黄棕D3G、阳离子嫩黄O、阳离子艳蓝RL对棉和苎麻的织物进行染色时,棉和苎麻织物之间的色差值均大于5。     

红色育果内袋纸的生产

红色育果内袋纸是一种与外袋一起制作苹果育果袋的农业技术用纸,它外观光亮透红,手感滑腻,其质量的高低直接影响成品果的质量。2.1打打浆红色一般采用100%化学针叶木浆为原料,应用槽式打浆机或双盘磨串联打浆系统进行粘状打浆,打浆度不小于80°SR,纤维平均长度在1.5mm左右。2.2打染色红色选用耐晒性较高的直接染料进行染色。染料一般先加入未打浆池,再经打浆机高温处理,可延长染色时间,提高染色温度,适时加入媒染剂及固色剂可提高染料留着率,减轻掉色。2.3打施胶红色以分散松香胶作为施胶剂,用量一般为3%;以硫酸铝为沉淀剂,用量为6%;控制施…     

填料和染料对喷墨原纸色相和白度的影响

研究了浆内添加填料(滑石粉)和染料(固体VBL)对喷墨原纸色相和白度的影响,实验表明:单独使用滑石粉和固体VBL作为浆内添加剂时,均可明显提高喷墨原纸的ISO白度和明度L*值,调节纸张的a*值和b*值,使原纸色相纯正饱满;当将二者混合添加时,滑石粉的存在会降低增白剂的增白效果。     

壳聚糖用于纸张染色

利用壳聚糖对漂白硫酸盐浆进行预处理,分别采用Cartasol Red 2FGN liquid直接染料及Cartasol BlueK-2R liquid阳离子直接染料对纸浆进行染色,研究壳聚糖黏度、用量及pH值对染色效果的影响,同时就壳聚糖与硫酸铝的协同效应进行研究。结果表明,增大壳聚糖黏度和用量可提高直接染料染色色度;黏度对阳离子直接染料染色影响不大,但随着其用量的增加,染色色度先增后降;壳聚糖溶液的pH对两种染料的染色效果影响不大。另外,壳聚糖与硫酸铝在直接染料染色时协同效应明显,但在阳离子直接染料染色时较差。     

本色浆在彩色羊皮纸中的应用

探讨了在彩色羊皮纸中配抄一定比例的本色浆,对直接染料的染色效果及其对成纸外观的影响.结果表明,与全漂白浆相比,L*a*b*值变化较小,不论原纸还是羊皮纸,在色相上基本相同;羊皮纸的纸面能发现少量本色浆纤维,但是不影响色相,也不影响成纸的使用.     

液体染料对废纸浆的染色特性

分析了几种液体染料,即液体碱性黄、液体碱性红、液体碱性橙、液体碱性棕、液体碱性蓝、液体直接黑在废纸浆(OCC,水泥袋废纸浆)染色中的染色特性及其应用.     

亚麻织物的还原染料电化学染色初探

对亚麻织物还原染料电化学染色技术进行研究，并与常规染色工艺进行比较。试验结果表明，在一定电压下，电化学染色技术可以提高还原染料的平衡上染百分率，加快扩散速率，降低染料上染的活化能，降低成本，节约能源。     

Research on the dyeing behavior of wool fabric with natural phytolacca berry dyes北大核心

The natural dyes was extracted from mature Phytolacca berries for wool fabric dyeing, the influence of different dyeing process parameters on the dyeing depth was investigated in the case of direct dyeing, Al3+ as mordant was applied to improve the dyeing fastness, the antibacterial properties of dyed wool fabric was tested. The results showed that: the dyeing depth K/S value increased with the ratio of solid to liquid and tended to flatten when the ratio was 1 : 8. 33. The K/S value increased with temperature, the dyed fabric color changed from red to pale yellow when the temperature was over 60 °C. The K/S value declined with NaCl concentration increased. The K/S had maximum color yield when the pH value was 3.5. Al3+ could improve the washing and rubbing fastness of dyed fabric. The dyed fabric had good antimicrobial properties.     

Influence of source and quality on the color characteristics of annatto dyes and formulations

Annatto dyes containing different strengths of bixin, norbixin and their formulations such as water-soluble liquid, and oil soluble liquid were measured for L*, a* and b* in a Hunter color meter and the Yellow (Y) and red (R) units in a Lovibond tintometer. Seed source and dye purity had a significant effect (P < 0.05) on the color characteristics L*, a*, b* and Y and R units of bixin/norbixin dyes and their formulations. These characteristics behaved independently when different dyes diluted to a common concentration of 50 mg bixin or norbixin/L. However, when individual bixin/norbixin dyes serially diluted L*, b* decreased and a* values increased with increase in concentration of bixin/norbixin. Similarly the increase in concentration of bixin/norbixin have shown decreasing trend on Y/R values due to increase in R-values in the tintometer. It has been observed that a* and R units generally increased with increase in concentration, and L* and b* values decreased and Y values are almost constant in both the bixin and norbixin dyes. However the b*/a* values showed lower values in bixin dyes and higher in norbixin dyes. Similarly R-values were higher in bixin dyes when compared to norbixin dyes.     

Extraction of natural dyes for textile dyeing from coloured plant wastes released from the food and beverage industry

The food and beverage industry releases considerable amounts of wastes which contain natural dyes. Such wastes could serve as a sources for the extraction of natural dyes for textile‐dyeing operations. The extraction of brilliant yellow and red colours from fruits and vegetables is of particular interest. Wastes, e.g. pressed berries, pressed grapes, distillation residues from strong liquor production, and wastes and peels from vegetable processing, have been extracted with boiling water and test dyeings on wool yarn were performed. Colour strength, shade and fastness properties of the dyeings have been tested. The extracts were applied as direct dyes and in the presence of iron(II) or alum mordants. The results prove the potential of such wastes as a source for natural dyestuff extraction. To obtain textile dyeings with acceptable fastness properties, however, rigorous selection of dyes and development of suited processes is required. A considerable number of red natural dyes need further research to optimise the low level of fastness to light. Copyright © 2005 Society of Chemical Industry     

染料结构与氨纶的染色性探讨

采用中性、弱酸性、分散、活性染料对氨纶进行染色，并对染料分子结构及IOB值与氨纶染色性能的关系进行了探讨。结果表明，一般分散染料和1：2金属络合结构中性染料的染色性能优良，部分弱酸性染料镒之，活性染料染色性差。具有类似结构的染料，随着IOB值降低，即疏水性增加，上染率呈增高趋势。     

松式碱处理对竹纤维直接染料染色性能的影响

采用不同浓度的烧碱溶液对天然竹纤维进行松弛处理，然后采用直接染料染色，讨论了烧碱处理对竹纤维染色性能的影响及原因。研究结果表明，在115～130g／L碱浓范围内，直接染料上染量增加的幅度最大；当碱浓高于160g／L后，上染量几乎不再增加。与棉纤维相比较，直接染料对竹纤维的平衡上染百分率低、染深性差、上染速度慢，采用190g／L以上浓度的烧碱处理，可使直接染料对竹纤维的平衡上染百分率、染深性和染色速度达到与碱处理棉纤维相同的水平。     

Ecological wool dyeing with pulps of lavender,broom, and red wine

The pulps of agricultural products used industrially in Isparta (Turkey) which contain natural dye pigments were used to obtain low-cost natural dyes. Natural dyes were obtained with the extraction method from the pulps of lavender and Spartium junceum flowers after oil extraction and the pulp of Dimrit grape red wine. The dyeing of wool yarns with these compounds as a natural dye has been studied and ecological wool dyeing achieved by using nontoxic and ecological mordants. Natural dyes optimum extraction times were analyzed. Dyed wool yarns washing, rubbing, and light fastness tests and spectrophotometric measurements were performed. In addition, wastewater analysis were achieved and cost estimates of natural and synthetic dyeing methods were evaluated and compared.     

樟树叶天然染料对蚕丝织物的染色性能

研究了从樟树叶中提取的天然染料对蚕丝织物的染色性能。比较直接染色与媒染染色,选择硫酸亚铁、硫酸锌、明矾作为媒染剂,分析染色蚕丝织物的K/S值、L*值、C*值,直接染色的优化工艺为:染液5%(omf)、温度90℃、时间60 min、pH=4、浴比1∶25,最高K/S值为7.874。媒染染色明显提高了上染率,硫酸亚铁同浴媒染使K/S值最高升至22.512。采用媒染法染色后织物的耐皂洗色牢度、耐摩擦色牢度和耐日晒色牢度均有明显提高。