织物印花用喷墨热转印墨水的研制

以超细分散染料为着色剂、去离子水为溶剂、丙三醇和乙二醇为保湿剂,采用添加分散剂(MF)、表面活性剂(SF-200)和消泡剂(DF-999)的方法制备了织物印花用喷墨热转印墨水。研究结果表明:采用单因素试验法优选出制备墨水的最佳配方是w(超细分散染料)=10%、w(丙三醇)=10%、w(乙二醇)=5%、w(MF)=5%、w(SF-200)=0.6%、w(DF-999)=0.4%和w(去离子水)=69%(均相对于墨水总质量而言);由最佳配方制备的喷墨热转印墨水具有分散均匀、黏度(为2.24 m Pa·s)适宜和保湿性良好等特点,可用于喷墨印花工艺;将该墨水应用于喷墨转印,当转印温度为200℃、转印时间为30 s时,墨水具有较高的转移率(90.12%)。     

Drying stability enhancement of red-perovskite colloidal ink via ligand-derived coating for inkjet printing

Today, inkjet printing techniques has many merits such as high printing yield and mask-free process for the various field. As one of the candidate ink materials, the perovskite is appropriate for inkjet printing due to the colloidal state and excellent optoelectronic properties such as high photoluminescence quantum yield (PLQY) and narrow full width at half maximum (FWHM). Those characteristics are an advantage to fabricating ink and realize wide color-gamut in the small area with micro-patterning. However, perovskite application in inkjet printing with various color has limitations due to the low drying stability of mixed halide perovskite.Herein, we report on improving the drying stability of red perovskite by inducing aggregation during the drying process. Silane ligand has applied to induce the aggregation, and we confirmed that the thin coating layer has formed on the perovskite surface. The synthesized red-perovskite using silane ligands is well dispersed in the solvent as a colloidal state. And it maintained the emission intensity over 50% after drying. As-prepared perovskite ink has successfully printed on the ethyl cellulose film with 338 dpi with maintaining transparency of the film. These results are beneficial not only display applications but also security applications such as double anti-counterfeiting.     

Photochromic ink formulation for digital inkjet printing and colour measurement of printed polyester fabrics

The application of a series of commercial photochromic dyes to polyester fabric by a digital inkjet printing method was investigated. Solvent‐based ink systems using the dyes were formulated. The inks were characterised in terms of their physical properties which are related to the jettability of the inks, and finally the prints were fixed onto polyester fabrics by thermal fixation. Colour measurement of the printed fabrics was used to measure their degree of photocoloration, fading rate, fatigue resistance, and storage stabilities. The measured properties of the inkjet‐printed fabrics were compared with the same properties of the same dyes applied to polyester fabrics by dyeing methods. The printed fabrics demonstrated inferior performance in terms of the degree of photocoloration, superior performance in the case of background colours, a higher rate of fading, and a lower fatigue resistance compared with that shown by the same dyes applied to polyester fabric by dyeing methods.     

Preparation of core–shell latex for the pigmented ink of textile inkjet printing

A core–shell latex comprising poly(butyl acrylate) as core and poly(styrene‐methyl methacrylate) as shell was synthesized by emulsion polymerization using allyloxy nonylphenoxy propanol polyoxyethylene ether ammonium sulfonate (ANPS) as emulsifier. Transmission electron microscope, differential scanning calorimeter, and thermogravimetric analyses suggested the prepared latex had a core–shell structure. The particle size of the core–shell latex was about 102.8 nm with a molar ratio of butylacrylate, methyl methacrylate, and styrene at 6 : 2 : 2, a mass ratio of ANPS and monomers, ammonium persulfate and monomers at 15% and 1.0%, respectively. The core–shell latex showed high centrifugal stability and excellent freeze‐thaw stability. The clogging nozzle rate of the pigmented ink containing 20 wt % core–shell latex was small, whereas the printed fabrics with this pigmented ink exhibited high rub and washing fastness. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013     

纳米金属喷墨导电墨水研究进展

喷墨印刷电子技术是电子及微电子行业未来的一种高效、绿色环保型生产技术。本文详细阐述了纳米金属喷墨导电墨水的制备及性能研究、墨滴控制、涂层后处理与应用4个方面的研究进展,说明了纳米金属喷墨导电墨水是未来喷墨印刷电子研究的关键技术之一,指出了纳米金属喷墨导电墨水目前存在的不足,如固含量与稳定性之间的矛盾、导电性能不理想等。并对喷墨印刷电子技术的发展提出了展望,指出其在RFID天线、印刷线路板、印刷电子产业领域有广阔的应用前景。     

数码喷墨用紫外光固化油墨

在数码喷墨领域中，紫外光固化是最近快速发展的一项新技术。本文涉及到数码印刷对所用喷墨的要求，与普通溶剂油墨的区别和油墨配方的选材，最后提及UV固化油墨的发展新趋势。     

喷墨导电墨水用超细纳米银粉的制备

以C_6H_8O_6(抗坏血酸)为还原剂、PVP(聚乙烯吡咯烷酮)为分散剂,采用液相还原AgNO_3(硝酸银)溶液法制备了喷墨导电墨水用超细纳米银粉。研究结果表明:当AgNO_3浓度为1.0 mol/L、n(C_6H_8O_6)∶n(C_6H_8O_6理论值)=1.5∶1、n(PVP)∶n(AgNO_3)=1.2∶1和反应温度为40℃时,可制得分散均匀、纯度较高的超细纳米银粉;该纳米银粉的平均粒径小于10 nm,可以满足喷墨印刷的工艺要求。     

Color management for enhancing the performance of superfine nylon ink jet printing with reactive dyes inks

The challenge for the inkjet printing textiles is that the colors reproduction quality of printed output is an accurate match to the original artwork. Actual evidence from art workers with digital print facilities reveals that they regularly encounter problems in this area. This article concerns the initial stages of an investigation into color accuracy in digitally printed superfine nylon under low temperature plasma pretreatment in order to get a accuracy and color‐increased superfine nylon digital prints. © 2016 Wiley Periodicals, Inc. Col Res Appl, 42, 346–351, 2017     

油墨用水性聚氨酯乳液的制备及性能研究

以聚醚二元醇、甲苯二异氰酸酯(TDI)和二羟甲基丙酸(DMPA)为原料,制备了聚醚型芳香族水性聚氨酯(WPU)乳液,研究了R值[n(-NCO)∶n(-OH)]、DMPA用量、中和度和温度等对乳液外观、黏度、吸水率和稳定性等影响。结果表明:当R=2.0～2 5、w(DMPA)=5%、预聚温度为80℃和中和温度为40℃时,WPU乳液符合印刷油墨的使用要求。     

Facile synthesis of metal organic decomposition Al-doped ZnO ink for inkjet printing and fabrication of highly transparent conductive film

In this paper, a MOD (Metal organic decomposition) Al doped ZnO (AZO) ink was directly used for inkjet printing transparent and conductive AZO films. The ink was synthesized by using zinc acetate dihydrate and aluminum nitrate nonahydrate as precursor, 1,2-diaminopropane as a complexing agent, ethyl alcohol as solution, ethyl cellulose as addition agent. The thermal decomposition behavior of the MOD ink was investigated. The various MOD AZO inks were inkjet printed and heated at different temperatures for different times. The films were studied by X-ray diffraction, scanning electron microscopy, resistivity measurements and ultraviolet–visible spectroscopy. The results demonstrated that 0.2 M AZO (2 at%) film heated at 250 °C for 120 min showed highly preferential growth along the c-axis, uniform microstructure with a resistivity of 0.03 Ω cm and high transmittance more than 90% in the visible range of the spectrum with an optical band gap at 3.326 eV.     

UV-LED水性网印油墨的制备与性能研究

采用单因素分析法,分析了UV-LED水性网印油墨材料组分和用量对油墨性能的影响,并通过正交试验分析,最终得出UV-LED水性网印油墨的配方为:预聚物为80%、光引发剂TPO为5.5%、染料为9%、光活化剂为3%、消泡剂为0.9%、表面活性剂为0.8%以及流平剂为0.8%。研究结果表明:制得的UV-LED水性网印油墨固化速率高,黏度符合标准,固含量和附着力优异,各项性能指标能满足网印的要求。     

Recycling of steelmaking electric arc furnace dust into aqueous cyan ceramic ink for inkjet printing process and its printability

Recycling of electric arc furnace dust (EAFD) has great potential for industrial applications, due to its useful metal contents, including zinc. In this study, aqueous cyan ceramic ink for ink-jet printing applications was synthesized using EAFD. More specifically, cyan ceramic pigments were synthesized using an empirical composition of Zn(EAFD)_XCo_1-XAl₂O₄, in which expensive cobalt oxide is replaced by Zn-enriched EAFD. Zn(EAFD)_0.25Co_0.75Al₂O₄, which has a vivid cyan color, was selected as the optimum composition of cyan ceramic pigments for synthesizing aqueous cyan ceramic ink for ink-jet printing applications. To prevent nozzle clogging during ink-jet printing, the cyan ceramic pigments were micronized. The micronized pigments were mixed with distilled water and dispersant to fabricate aqueous cyan ceramic ink. To determine the optimized jettability and printability of this ink, its rheological properties, including viscosity and surface tension, were adjusted and analyzed. It was concluded that the jettability and printability of aqueous cyan ceramic ink produced via ink-jet printing could be enhanced by appropriately adjusting its viscosity.     

150 years of carpet printing: a retrospect

This retrospect of the development of the carpet printing industry, mainly in the UK, traces its origins from the birth of calico hand printing in the late 18th century to the first attempts to apply mechanised methods of producing patterned carpets during the 1840s. The author's involvement with the industry from its rebirth in the 1950s, through the heydays of the 1970s and to the present is then reviewed. Developments both in machinery and dye technology, not all of which enjoyed long-term commercial success, are described, including the latest introduction of digital printing systems.     

微乳液型油墨清洗剂的研制

为克服传统溶剂型油墨清洗剂易燃易爆、污染环境等缺点,以复配表面活性剂、溶剂、水及其它助剂制备了一种微乳液型油墨清洗剂,对微乳液稳定性等及油墨去污率进行了测定,研究了不同温度及时间对油墨清洗效果的影响。结果表明,常温下使用时,微乳液型清洗剂的油墨去除率达95%以上,最佳清洗温度为25～40℃,最佳清洗时间为15 min,具有安全性能高、清洗能力强、防锈缓蚀性好及环境友好等特点。     

An experimental analysis of the influence of the ink properties on the drop formation for direct thermal inkjet printing of high solid content aqueous 3Y-TZP suspensions

Direct inkjet printing (DIP) of ceramics as a novel solid freeform fabrication (SFF) method has been subjected to extensive research in the recent years. The studies have focused either on the simulation of the drop ejection or the production of demonstration objects. The aim of this study was to close the gap between the simulation results and product oriented studies. 3Y-TZP inks of 24 vol.% solid content were prepared and characterized in terms of physical properties as well as dimensionless quantities (Re, We, Ca, and Oh). The drop volume and velocity were estimated by considering a constant ejection pressure but varying physical properties of the ejected inks. A thermal inkjet printer was used to eject arrays of single drops as well as three-dimensional 3Y-TZP demonstration objects. The drop arrays were analyzed to determine the relation between the ink properties and the drop formation. The demonstration object was sintered close to the full density.     

Optical-physical and inkjet printing properties of created hybrid CaCO3 coated papers

The aim of this study is to examine the role of different formulations of calcium carbonates on the inkjet printing quality, with the use of cationic carboxymethyl cellulose (CMC)-starch as a binder in the formation of the coating structure of paper to use for inkjet printing. For this, GCC (ground calcium carbonate), PCC (precipitated calcium carbonate) and ECC (eggshell calcium carbonate), which have been tried as new coating materials in recent years, are mixed in different proportions to form a different coated formulation and plastered on the newly produced paper surface. Then, optical and physical tests of the obtained samples are carried out. Then, printing properties of the papers on which drop-on-demand system inkjet printing is made are examined. According to the obtained data, it is determined that the optical properties of coated paper with GCC + PCC blends outperformed papers coated with other blends. According to the physical test results, GCC + PCC blended coated papers showed the best performance in breaking length and tear indices. ECC + PCC blended coated papers however showed the best performance in burst indices. It is determined that as the particle size of the calcium carbonates in the coating materials decreased, the burst indices value also decreased. This situation is the opposite for breaking length and tear indices values. When the inkjet printing features are examined, it is seen that the best results are obtained from GCC + ECC coated papers in general. The most optimal metamerism indices results, measured under three different light sources, are obtained on GCC + PCC coated papers.     

Advances and challenges of ceramic pigments for inkjet printing

In the last decades, the development of new ceramic pigments has been a very pursuit goal, mainly since the emergence of the inkjet technology applied to ceramic tiles. The digital decoration of industrial ceramics has contributed to a notable reduction of pigment consumption and an aesthetical decoration improvement, which makes more flexible the production processes, enhancing the reproducibility and cost savings. The nanopigment requirements of the inkjet technology demand submicronic particle size, ink rheology, stability, drop resolution, etc. Although the up-down procedure by micromilling contributed firstly to the particle size reduction of existing pigments, novel approaches are developed to obtain directly high-quality particles of suitable size with the aim of providing a higher optical efficiency. Thus, in this work, a comprehensive review about the existing crystalline structures, novel compositions, and synthesis methods as well as new coloring mechanisms is addressed, giving an overview of all these advances while considering the four-color process required for inkjet technology. The inkjet technology has the challenge of evolving towards a sustainable technology by eliminating the use of critical raw materials, removing the use of synthesis aid fluxes, and reducing the energy consumption, to approximate to a circular economy which is predominant in this sector.     

Development of high solid content aqueous 3Y-TZP suspensions for direct inkjet printing using a thermal inkjet printer

An aqueous 3Y-TZP suspension with 24.2 vol.% solid content was developed for “Direct Inkjet Printing” (DIP). The printing unit was a common HP-DeskJet printer. The suspension was adjusted in terms of particle size, viscosity, and pH-value, so that it became compatible with the printing system. Therefore, suspensions of various compositions were prepared and printed two-dimensionally to analyze the influence of several organic additives on printability. The printouts were evaluated and typical printing errors were classified. The composition of the suspension was optimized and successive and error free single layers of 3Y-TZP were printed. The suspension was examined and characterized in terms of particle size and distribution, composition, viscosity, surface tension, pH-value, vapour pressure, and the Ohnesorge number. A printed 3Y-TZP layer of 12 μm thickness was sintered to full density.     

Use of a biomaterial as a thickener for textile ink‐jet printing

The feasibility of using chitosan as a thickener in the pretreatment print paste for textile ink‐jet printing was explored. An orthogonal analysis was used to determine the optimum conditions for using chitosan as a thickener in the pretreatment print paste and the effects of different process factors for achieving the best color yield in textile ink‐jet printing. With the help of the orthogonal analysis, the importance of different process factors was found to be in the order of (1) the amount of urea used, (2) the amount of chitosan used, (3) the amount of sodium bicarbonate used, and (4) the steaming time. On the basis of the results of the orthogonal analysis, the optimum conditions for using chitosan as a thickener for the pretreatment print paste were concluded to be 40 mL of chitosan, 10 g of urea, 8 g of sodium bicarbonate, and 5 min of steaming. According to an analysis of the results of different color fastness tests, chitosan could principally work as a pretreatment print paste thickener. However, the final color yield obtained from chitosan‐containing cotton fabrics depended greatly on the stage of the chitosan application. Nevertheless, the color fastness properties and the outline sharpness of the prints of cotton fabric were greatly improved by the chitosan treatment. A two‐bath chitosan treatment was developed to separate the chitosan from sodium bicarbonate and urea before it was padded onto the fabric surface to minimize the neutralization effect. On the basis of the results for the highest color yield obtained on the cotton fabric, it was confirmed that the two‐bath chitosan treatment was successfully developed. In addition, chitosan could impart higher antibacterial properties with a slight reduction in the tensile strength of the cotton fabric. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

一种含D-柠檬烯的油墨清洗剂的研制

利用环保溶剂D-柠檬烯、水、表面活性剂和助剂,制备了一种油墨清洗剂.研究了水相中十二烷基二苯醚二磺酸钠(C12-MADS)、十二烷基苯磺酸钠(LAS)和失水山梨醇脂肪酸酯(Span40)的摩尔比,油相中Span40的浓度以及水、油相质量比对清洗剂性能的影响.实验结果表明,0.6mmol/L Span40的D-柠檬烯溶液为油相,n(C12-MADS):n(LAS):n(Span40)=1:1.5:1水溶液(C12-MADS浓度为0.03 mmol·L-1)为水相,二者按质量比为9:1复配,清洗剂性能较佳.