喷墨打印材料的制备及颜料用量对其性能的影响

为改善已有喷墨材料的吸墨性能,用SiO2@Al13核壳结构材料作为颜料制备吸墨材料;利用黏度杯、色差仪等进行测试,从涂料黏度、涂布量、涂布打印效果及色差四个方面,讨论了颜料用量对吸墨材料的影响。结果表明,颜料用量对吸墨材料性能影响显著,颜料的增加,利于材料吸墨,但不宜过高。颜料比例为75％时,材料性能优异。     

喷墨材料涂层厚度对其性能的影响

采用物理与化学相结合的方法制备了喷墨打印用纳米喷墨材料。利用原子力显微镜(AFM)分析了复合材料的表面结构和粗糙度,结果显示其粗糙度随着吸墨层的厚度发生了改变。利用表面张力仪(DCAT)和分光测色计分别测试了材料的接触角和色差,结果表明涂层厚度对打印质量的影响是非常显著的,并且当吸墨层厚度是50μm时,喷墨材料的综合性能是最好的。     

微孔聚乙烯材料加工过程对油墨吸收性的影响

作为光敏垫材料的微孔聚乙烯,它的一个基本性能要求是对油墨具有良好的吸收性。这一性能优劣与孔径的尺寸大小,微孔材料的通孔率,成孔材料的比例,加工方式,添加剂的种类这几个因素相关。本文就是通过研究以上几个因素在不同条件下对吸墨速率的影响,从而获得一种吸墨速率较佳,工业成本较低的光敏材料的制备条件。     

彩色喷墨纸吸墨层性能研究进展

对吸墨层中墨水与吸墨层间浸润行为的理论研究是指导吸墨层结构设计和性能的关键。分析了墨水在吸墨层中的浸润过程,综述了墨水浸润过程研究方法及提高彩喷纸吸墨层性能的方法;并对彩喷纸的研究热点和未来发展趋势进行了预测。     

梯度功能材料的研究现状与展望

本文综述了梯度功能材料的设计、制备与性能评价等当前国内外的研究现状。展望了梯度功能材料的发展前景与方向。     

AZO导电薄膜的研究进展及应用

综述了透明导电薄膜的性能、种类、制备工艺、研究及应用状况,重点讨论了掺铝氧化锌(AZO)薄膜的结构、导电机理、光电性能和当前的研究焦点,指出了需要进一步从材料选择、制备工艺的研究、多层膜光学设计等方面提高透明导电薄膜的综合性能,以满足尖端技术的需要.     

钙钛矿太阳电池的研究进展

介绍了卤铅铵钙钛矿（CH3NH3PbX3,X = Cl、Br、I）的结构及其在新型无机-有机杂化异质结钙钛矿太阳电池中的应用,阐述了钙钛矿太阳电池的结构与工作原理,着重从钙钛矿太阳电池的致密层、钙钛矿吸收层（有骨架层和无骨架层）及有机空穴传输层三个重要组成部分的材料、微结构及制备方法等方面分析了钙钛矿太阳电池的研究进展及存在的问题。并结合不同课题组的研究成果评价了钙钛矿太阳电池各组成部分相应的材料、微结构及制备方法等对太阳电池光伏性能和长期稳定性的影响。此外还介绍并比较了反转结构与柔性太阳电池的光伏性能,简要讨论了钙钛矿太阳电池的各层材料、结构、有毒重金属的替代、长期稳定性等方面的发展趋势。     

硅系喷墨打印纸获得高光泽度的方法研究

本文主要介绍间隙型硅系喷墨打印纸的涂层结构,并制备不同涂层结构的3种喷墨打印纸,对3种喷墨打印纸的光泽度、吸墨性、固墨性、化工成本以及制造工艺进行讨论和比较。研究表明:铸涂纸有最低的化工成本,生产工艺也相对简单,但打印性能欠缺,只适用作低档喷墨打印纸。多层涂布硅系喷墨打印纸打印性能优良,化工成本较高,适用作高档喷墨打印纸。     

铋层状结构无铅压电材料的研究现状与发展趋势

铋层状结构无铅压电材料因其具有居里温度高、品质因数高、击穿强度及各向异性大等特性而受到人们的重视.本文介绍了铋层无铅压电材料的结构特点,综述了该体系压电陶瓷的微量元素与制备工艺对材料压电、铁电性能的影响规律,着重讨论了不同位离子取代对陶瓷性能和结构的影响,概括了制备高取向陶瓷的先进制备技术,并展望了铋层无铅压电材料未来的发展趋势.     

中空MOFs的研究进展

中空金属有机骨架材料MOFs因其具有高的比表面积、密度低、中空结构等优点受到人们广泛的关注,是近年来MOFs材料的一个重要研究方向。本文概括了中空结构MOFs(H-MOFs)制备方法的研究进展,重点介绍了聚苯乙烯牺牲剂和Cu_2O自我牺牲剂模板法、乳液型液-液和液-气界面的软模板法、Ostwald Ripening、Kirkendall效应等自组装方法的无模板法,并对其优缺点进行了讨论;探讨了中空MOFs在气体吸附和分离、催化方面的应用性能及在生物医药、磁性分离及环境保护方面的潜在应用;并提出今后H_MOFs研究的主要方向是合成新型H_MOFs、制备形貌多样、结晶性能好的新型高稳定性材料、精确控制壳层厚度以及开发新的H_MOFs制备方法。     

The research progress in recording layer of the inkjet printing materials

Inkjet printing has become a prevailing printing technology due to its practicability and rapidity. The color inkjet printing as one of the inkjet printing has color comprehensive and high clarity compared with traditional printing. The key point of the color inkjet printing is the introducing of special recording layer which has great influence on the printing quality. However, the printing quality of the color inkjet printing depends on the compositions and performance of the recording layer and the infiltration behavior between the ink and the recording layer. Specially, the theoretical study of the infiltration behavior between the ink and the recording layer is the key to guiding the structural design. In this review, the types and compositions of the recording layer were clearly analyzed, the process and evaluation methods of ink infiltration and the performance evaluation system of the recording layer were also summarized. Ultimately, the current bottleneck and the development trend of the recording layer were put forward.     

喷墨相纸中PVA粘合剂与打印性能的关系

本文研究了彩色喷墨打印相纸的粘合剂与性能的关系。讨论了PVA粘合剂的聚合度对相纸性能以及PVA粘合剂用量对吸墨性能的影响。结果显示,粘合剂聚合度大有利于相纸性能的提高,粘合剂用量对相纸吸墨性能影响较大,合适的PVA聚合度和用量可以得到各项性能优良的喷墨打印相纸。     

Color reproduction of authenticable luminescent backlit transmissive color images

We propose a method for creating authenticable color images under UV excitation backlight by printing an invisible luminescent white emissive ink layer on the verso side of a transmissive substrate and a classical cmy image on the recto side of the substrate. In order to obtain a backlit image whose colors are as close as possible to the original image colors, we map the input image sRGB color gamut into the gamut formed by the emissive white source attenuated by the classical ink halftones. The relationship between surface coverages of the classical cmy ink halftones and the resulting backlit colors is obtained by accounting for the transmission of the emissive white through the paper substrate and through the classical cmy ink halftones. The transmittance of the classical ink halftones is modeled by a new halftone absorbance prediction model. The lightness range of the luminescent backlit color gamut is expanded by printing a black and white UV‐absorbing instance of the original color image in superposition with the luminescent white emissive layer and in registration with the cmy image printed on the recto side. Luminescent backlit color images provide a high anticounterfeiting security, as they combine a verso printed invisible luminescent ink layer, a verso printed black and white instance of the original image and a matching recto printed cmy instance of the original image. The resulting luminescent backlit image colors are close to the original image colors only when observed in transmission mode under UV light. © 2013 Wiley Periodicals, Inc. Col Res Appl, 39, 331–340, 2014     

迁移型聚氨酯防冰涂料的研究

通过对聚氨酯防冰涂料制备的研究,讨论了其微观润湿结构、疏水性能、润滑性能、力学性能及可再生性能等,所得聚氨酯防冰涂料具有一定的防冰效果,可作为架空线除冰的研究方向之一.     

十二烷基硫酸钠对亚麻织物喷墨印花性能的影响

为提高亚麻织物的喷墨印花颜色效果,将十二烷基硫酸钠（SDS）与海藻酸钠（SA）协同作用于亚麻织物的预处理工艺,对处理后织物表面墨滴的铺展面积、喷墨印花色块的颜色参数进行了测试,使用接触角测量仪、扫描电子显微镜（SEM）、固体表面zeta电位仪、X射线光电子能谱仪（XPS）和傅里叶变换红外光谱仪（FTIR）对预处理前后亚麻织物表面物理和化学性能进行了表征。结果表明：与SA预处理织物相比,表面活性剂的引入可使亚麻织物表面墨滴铺展面积减小14%,墨滴渗化程度也明显减小;青色和黑色印花色块的表观颜色深度增加,摩擦色牢度略有降低,断裂强力和耐日晒色牢度无明显改变。同时从SEM图看出,经预处理后,SDS+SA预处理剂在亚麻织物表面上形成了薄膜,纤维间以锯齿状的膜结构堵塞了孔隙,促使更多的活性染料在滴落的位置与纤维发生共价结合;此外,预处理处理后织物的亲水性增加,有利于染料对亚麻纤维的上染。     

Color reproduction on varnished cardboard packaging by using lower ink coverages due to the gray component replacement image processing

Even in these challenging times, cardboard packaging industry is increasing its revenue with stable annual increase prediction, but customers are increasing demands on the packaging with respect to environmental protection, attractiveness, and branding. This article aims to determine the influence of image processing in terms of gray component replacement and overprint varnishing on the color reproduction on a cardboard packaging material. A test chart with tertiary colors was defined and modified by different gray component replacement levels. It was printed in accordance with ISO norm on coated and uncoated cardboard and finished by overprinting water based, offset, and UV varnish. The prepared samples were evaluated by measuring surface coverage, tone value increase (dot gain) of primary colors and calculating ΔE₀₀ of defined tertiary colors. The results showed that gray component replacement application reduces ink consumption. Higher gray component replacement applied results in lower ink surface coverage, but the decrease is also dependent on the image content. The TVI (dot gain) is significantly influenced only by applying UV varnish, resulting with higher TVI. The color differences of the tertiary colors showed that increased level of the gray component replacement applied did not cause significant color differences, even decreased color difference in some cases. Additionally, applying gray component replacement decreased color differences in “reddish” part of the gamut. This research proved that lowering the ink consumption due to the gray component replacement will not cause significant differences in the color reproduction. Furthermore, varnishing with commercial offset or water-based varnish will not cause higher deviations in color reproduction, but use of the UV varnish would.     

红色陶瓷墨水的制备与性能研究

采用金属盐溶解法制备出一种呈色良好并能满足喷墨打印机各项理化性能要求的红色陶瓷墨水.研究墨水组成和基础釉配方两种因素对该红色陶瓷墨水呈色性能的影响;并对喷墨陶瓷片烧成后的表面进行分析,探讨其呈色机理.结果表明:制得的陶瓷墨水表面张力、粘度、pH值等理化性能均符合喷墨打印机要求,且铬锡比为0.04∶1的陶瓷墨水施于高钙透明基础釉上烧成时呈色效果最佳.     

电子墨水显示性能的研究

染料电子墨水、颜料电子墨水是电子墨水的主要实现方式。电泳显示电子墨水的稳定性,是影响电子墨水电泳显示的重要因素。结合文献和实验结果,通过对比评价染料电子墨水、颜料电子墨水显示性能:画面的分辨率、图像的响应时间、可重复使用的次数(即寿命)等,研究染料电子墨水与颜料电子墨水各自的显示性能的差异。     

氧化石墨烯的制备及形成机理研究

氧化石墨烯(GO)作为一种石墨烯衍生物,结构中含有大量羟基、环氧基、羧基和羰基等含氧官能团,使其易与其他物质通过相互作用复合,从而提高和拓宽传统材料的性能及应用。GO的结构和尺寸等性质会受石墨氧化过程中制备方法、石墨来源、氧化剂种类、反应条件等因素的影响。针对GO的制备、形成机理、结构控制等方面的研究逐渐引起科研工作者的重视。该文综述近几年有关GO的制备、方法改进、制备过程中涉及到的化学反应和形成机理以及GO结构影响其宏观性能和应用的研究进展,指出确定GO的形成机理和精确控制GO的结构是制约其应用的关键,从工业化生产和可持续性发展的角度对要拓宽和实现GO的应用存在的问题及研究方向进行了总结和展望。