Effect of Stretching - Setting Treatment on Dyeing Behavior of Wool

Changes of dyeing behavior of wool after stretching - setting treatment are studied.Effects of stretching - setting on wool structure are analyzed.It is concluded that stretching - setting treatment not only reduces wool diameter and increases wool length,but also brings about low-temperature dyeing of wool.

Treatment of Dyes Wastewater by a New Kind of Bio - Fluid Bed

A new kind of bio-fluid bed used to treat dyes wastewater is described in detail due to its several special features,such as high removal efficiency,simple struc-ture,shock load resistance,etc.By means of analyzing the experiment data,the results show that the dye wastewater’s organic matter is removed greatly after be-ing treated by this new kind of bio-fluid bed.On the other hand,the removal efficiency of chromaticity of

锆-铝-钛鞣黄牛鞋面革湿态染整工艺设计与优化

为优化锆-铝-钛鞣黄牛鞋面革湿态染整工艺,首先研究了锆-铝-钛配合鞣剂的复鞣用量,然后以增厚率、得革率及柔软度为评价指标,采用正交设计法对填充及加脂材料的种类、用量及配伍方案进行优化,最后对各个优化方案进行组装,综合考察坯革的物理机械性能和感官性能,得出最佳的锆-铝-钛鞣黄牛鞋面革湿态染整工艺。研究表明,复鞣时锆-铝-钛配合鞣剂用量为2%,填充时氨基树脂鞣剂用量为2%、丙烯酸聚合物鞣剂用量为6%、植物鞣剂用量为7%、合成鞣剂用量为6%,加脂时卵磷脂加脂剂用量为2%、羊毛脂加脂剂用量为2%、合成油加脂剂用量为3%、蓖麻油加脂剂用量为3%,该工艺所得坯革得革率高、增厚率大、柔软度好,收缩温度超过93℃,感官性能良好,坯革物理机械性能满足行业标准。

Syntheses, Characterization and Biological Activity of Novel Thiazoylazo Dye and Its Coordination Compounds

The present work describes the synthesis of a novel heterocyclic azo dye by general diazonization of 2-amino-4,5-dimethylthiazole followed by the diazo- coupling of the resulting diazonium ion with 5-methyl-2-(propan-2-yl)phenol to obtain ligand L. This was characterized using Fourier-transformed infrared and electronic spectrophotometry. Ligand L was further coordinated with five metal ions, M:L, 1:2 [M = Cu(II), Mn(II), Zn(II), Ni(II) and Co(II)]. The coordination compounds obtained were characterized by electronic, IR spectrophotometry, magnetic susceptibility and percentage metal analyses. The results obtained suggested that a thiazoylazo dye was obtained as ligand L. It was proposed that two molecules of the solvent coordinated to the metal ion in addition with the ligands to give an octahedral geometry for copper(II), manganese(II) and nickel(II) complexes. On the other hand, square planar geometry was suggested for zinc(II) and cobalt(II) complexes. The anti-infla- mmatory activity of the ligand and coordination compounds was evaluated using four in vitro-based assays viz: xanthine oxidase and lipoxygenase inhibition assay, membrane stability and protein denaturation assay. The synthesized compounds generally exhibited good anti-inflammatory activity in all the assays carried out. However, the reference standards, in this instance, were more effective in the case of xanthine oxidase, lipoxygenase and protein denaturation inhibitory assays. For the membrane stability study, the coordination compounds and ligand L elicited more potent anti-inflammatory activity than the standard drug.

铬鞣革在染色加脂工序中的铬释放

研究了铬鞣后染色和加脂工序对皮革中铬释放的影响。结果表明:单独进行染色、加脂时,染料和加脂完成渗透后,废液中铬浓度分别为30～50mg/L和70～300mg/L;经甲酸固定后,由于染料和加脂剂与铬有一定程度的结合,浴液中的一部分铬会随之重新与胶原纤维结合,使得废液中的铬浓度降低近50%。同浴染色、加脂时,铬的释放量会显著降低,因此采用该工艺是降低铬释放的有效而简单的方法。染色、加脂工序中铬的释放不会明显改变皮革的收缩温度,说明释放的铬多为物理形式沉积在皮纤维中的铬或单点结合的铬。

固定化黑曲霉处理制革染色加脂废水的COD与色度

探讨了固定化活体黑曲霉作为去除制革染色加脂废水中COD与色度的一种新生物材料的可行性。首先采用粉末活性炭包埋活体黑曲霉的方法制成固定化黑曲霉,以活性炭作为对比样,探究固定化黑曲霉在不同pH值条件下去除制革废水中COD的效果和长效性;研究了pH值、时间、温度、用量对固定化黑曲霉去除染色加脂废水中COD与色度的影响。结果表明,固定化黑曲霉与活性炭对染色加脂废水的COD去除效果相差不大,但前者的长效性要优于后者;在pH值为4.0、温度为30℃、时间为25 h、用量为150.0 g/L时,固定化黑曲霉去除制革染色加脂废水中COD与色度的效果较好。该固定化技术为去除制革染色加脂废水的COD与色度提供了参考。

超声波在皮革工业中应用研究的进展

本文介绍了超声波在皮革工业中的研究和应用 ,从皮革的鞣制、脱毛。

色谱分析法在制革中的应用

本文总结了色谱分析方法在鞣制、染色、加脂等制革工序及废水监测方面的应用情况 ,同时也对其在制革生产中其他方面的应用前景做了讨论 ,说明了色谱技术在制革生产的现场控制、分析检测等方面应用的可能性和有效性。

防水鞋面革鞣后湿加工技术的经验介绍

阐述了影响鞋面革防水性能的因素,从蓝湿革的选择,防水革的铬复鞣,中和方法,复鞣方法及染色、加脂过程控制方面,详细介绍了防水鞋面革的加工工艺。并简述了转鼓清洗、专用容器、气候对鞋面革防水性能的影响。最后对防水鞋面革的制作工艺进行总结,指出需要从原料选择,复鞣、染料、加脂方法以及设备选择和清洗方面去管理和控制,才能做出防水性能稳定的产品。

黄牛全粒面防水消光鞋面革的生产工艺探讨

防水革以其独有的防水性、透水汽性、隔热保温性等卫生性能和柔软、丰满、舒适的宜人手感深受消费者的青睐。本文主要介绍了全粒面防水、消光鞋面革的生产,是以蓝湿皮为原料经水场再鞣、干燥整理、涂饰等工序到成品,并对整个加工过程做详细的介绍。

难降解加脂剂对酸性品红染料降解的影响研究

以矿物油加脂剂和阳离子型加脂剂为试验材料,测定了难降解加脂剂对酸性品红染料脱色度的影响,探讨了阳离子型加脂剂抑制偶氮染料生物脱色的机理。结果表明:矿物油加脂剂对染料的脱色活性无影响,而阳离子型加脂剂则由于其自身的生物毒性,对染料的生物脱色具有一定影响,但与磷酸酯盐型加脂剂相比,抑制作用较小。

阳离子角蛋白的制备及用于皮革废水絮凝性能研究

以水解角蛋白为底物,3-氯-2-羟丙基三甲基氯化铵为接枝单体,在碱性条件下通过开环加成反应合成了阳离子角蛋白,采用傅立叶红外线光谱仪对自制的阳离子角蛋白的结构进行表征,研究了阳离子角蛋白絮凝剂对制革染色加脂废水的絮凝效果,考察了絮凝剂加入量、pH和絮凝时间对絮凝效果的影响,通过场发射扫描电镜对絮凝机理进行了初步探讨.实验结果表明:制得的絮凝剂对制革染色加脂废水有较好的絮凝效果.当絮凝剂加入量为250mg·L-1、溶液pH为4,絮凝时间为4h时,对化学需氧量(CODCr)的去除率达到61%,对悬浮物(SS)的去除率可达到95%.

时尚风格黄牛服装革生产工艺的探讨

对黄牛全粒面轻涂饰服装革的生产工艺技术进行了论述,包括适当的前处理和铬复鞣,以及中和要透、染色、加油等,同时对干燥整理和涂饰工艺技术进行了较为深入的论述,包括干燥、封底、底涂及顶层的涂饰等。并说明了如何使成革更软更蓬松,更具有海绵感等时尚风格。

无浴染色加油中试

染色加油废水是制革不易处理的污水之一。本文提供的方法,无染色加油废液产生,是染色加油的先进的办法之一。

皮革染色加脂废水处理方法的研究

采用絮凝—活性炭吸附结合的方法,对染色加脂废水进行处理。试验发现:EPI-DMA脱色效果优于PAC,但对于废水中加脂剂的处理效果,PAC优于EPI-DMA。经过复配的有机-无机复合絮凝剂EPI-DMA-PAC处理效果良好,在0.35g/L的投加量下,COD、悬浮物(SS)和色度去除率分别为68%、93%、82%,再经过活性炭吸附后,水体澄清透明,水质外观良好,可明显降低综合废水的处理难度。

微波辐照在皮革工业中的应用研究现状

作为一种新型、清洁、高效的热源,微波在皮革工业中的应用已经引起人们的研究兴趣,其热效应和非热效应对皮革加工过程及鞣革性能的影响是人们关注的焦点。本文将对微波辐照在皮革的主要工序,包括干燥、染色、加脂和鞣制等的应用研究进行系统总结,并指出现有研究中存在的不足,为将微波技术有效地应用于皮革加工过程提供参考。

山羊打光鞋面革重点工艺探讨

对山羊打光鞋面革重点工艺进行介绍

A Cost-effective Approach for 2-（t-Butyl）-6-methyl-4H-pyrone-A Key Intermediate Toward the Synthesis of Red-emitting Dyes for OLED Applications

In the interest of driving down the cost of DCM-type light emitting materials, we have found a new approach to prepare 2-（t-butyl）-6-methy1-4H-pyrone, which is cost effective and more amenable to large scale production than the reported method. Furthermore, three new DCM-type dyes, N,N-bis-[p-（2-（4-dicyanomethylene-6-t-butyl-4H- pyran-2-yl）-vinyl）-phenyl]-4-t-butyl-aniline （BDCM-BA）, N,N-bis-[p-（2-（4-dicyanomethylene-6-t-butyl-4H-pyran- 2-yl）-vinyl）-phenyl]aniline （BDCM-A） and N,N-bis-[p-（2-（4-dicyanomethylene-6-t-butyl-4H-pyran-2-yl）-vinyl）- phenyl]-4-methoxyl-aniline （BDCM-MA） were synthesized in good yields using 2-（t-butyl）-6-methyl-4H-pyrone as starting material. They can be utilized in OLEDs as nondoped red emitting materials as the result of the restricted concentration quenching effect.

Properties of Novel Reactive Transfer Printing of Silk

The novel reactive transfer printing of silk was carried out through a hot-press adhesion and steaming. The special transfer paper was prepared by coating the paste mainly containing hot-melt adhesive hlgh-substituted hydroxypropyl cellulose （H-HPC） and printing thickener earboxymethyl cellulose （CMC）. The effects of each ingredient in the paste on color yield of the prints and dye penetration were investigated. The major results indicate that, color yield is chiefly governed by the adhesion extent imparted by H-HPC, the type of fixing alkaline agent, and the content of urea. Trichloroacetic acid （TCAA） as the fixing alkaline agent and adding 5% urea can enhance the color depth obviously. Dye penetration depends on the coating quantity on the transfer paper, the contents of urea and dicyandiamide. The printed silk possesses a higher color yield, color fastness of grade 3 or above, clear sharpness, and good handle when the paste contains 3 % H-HPC, 0. 7 % CMC, 3 % TCAA, 5 % urea, 3 % dicyandiamide, and 0. 5 % physical sorbent nano-silica.