Barium titanate ceramic inks for continuous ink-jet printing synthesized by mechanical mixing and sol-gel methods

Ink-jet printing of ceramic thick films is one of low cost on-site ceramic pattern fabrication methods.It is necessary to investigate the rheological behaviour of ceramic inks and drying behaviour of droplets.Two kinds of BaTiO3 ceramic inks were prepared by mechanical mixing and sol-gel methods,respectively.The effect of preparation parameters,such as quantity of polyacrylic acid(PAA)and solid content,on physicochemical and rheologic properties of the ceramic inks was investigated.The results show that they satisfy the requirements of continuous ink-jet printing.The appearances of printed dots and single printed layers were observed by SEM.The SEM images indicate that dots printed with mixing method ink are in ring shape,and dots printed with sol-gel method ink are in pancake shape,so the printed layer surface with the latter ink is smoother.The causes of these phenomena were discussed.

基于专利维度全球陶瓷墨水技术发展态势研究

陶瓷墨水是一种含有特殊陶瓷粉体的液体,通常由陶瓷颜料、溶剂、分散剂、黏结剂、表面活性剂和其他助剂组成,是陶瓷喷墨打印技术的核心物质。为了解全球陶瓷墨水技术发展态势,基于专利维度,通过incoPat平台检索相关专利数据,从专利申请趋势、地域分布、创新主体和技术功效等角度进行分析。结果表明,全球陶瓷墨水领域当前处于快速发展期;中国、美国和日本同时为全球陶瓷墨水的主要技术来源国和目标市场国;企业在陶瓷墨水领域整体增长速度最快,但技术创新主体仍集中在国外企业;技术热点集中在提高陶瓷墨水的呈色能力和实现新功能等,技术突破点可从增强渗透性、控制合适表面张力和控制干燥速率等方面考虑。

浅谈陶瓷墨水对地铺石烧成后尺寸的影响

本文通过色料、釉料、坯料的成分分析,以及烧成机理研究,简单讨论了陶瓷墨水对地铺石烧后尺寸的影响。

浅谈陶瓷墨水对抛釉砖产生针孔的影响

本文简单探讨了抛釉砖产生针孔的主要原因,同时探讨了陶瓷墨水在抛釉砖生产过程当中对针孔产生的影响。

Engineering 3D-printed aqueous colloidal ceramic slurry for direct ink writing

The construction of rapid prototyping for structured ceramics has a promoting effect on potential applications.In this work,engineering slurry with different formulations were used to develop aqueous colloidal ceramic slurry for direct ink writing(DIW).Optimized slurry of Formulation 5 possessed good printing effect for DIW with stable mechanical properties.Related characteristics,including shrinkage,compressive strength,rheological behavior,and chemical property,were also examined.DIW ceramics prepared from optimized slurry can be preliminarily applied to adsorption of Rhodamine B and chlortetracycline,and possessed the advantages of easy separation and operation compared with powder adsorbents.This work provides a strategy for the design of 3D-printed kaolin ceramic slurry,and also extends to potential application in adsorption.

Parameter Optimization via Orthogonal Experiment to Improve Accuracy of Metakaolin Ceramics Fabricated by Direct Ink Writing

Kaolin/metakaolin-insulating ceramic components fabricated using direct ink writing(DIW)have important ap-plication prospects in architecture and aerospace.The accuracy of the entire process including the forming and sintering accuracy of ceramics greatly limits the application scope,and high-accuracy ceramic samples can meet the usage requirements in many scenarios.The orthogonal experiment was designed with four process parame-ters,including nozzle internal diameter,filling rate,printing layer height/nozzle internal diameter,and printing speed,to investigate the evolution of the DIW forming accuracy,sintering shrinkage rate and surface roughness of metakaolin-based ceramics with different process parameters.The influence of each process parameter and its mechanism were analyzed to obtain the DIW parameters for high-accuracy metakaolin ceramics.Multiple linear regression models between the dimensional change rate,surface roughness,and process parameters of the ceramic samples were established and validated.The results show that comprehensively considering the forming accuracy of the ceramic green bodies,sintering shrinkage rate and surface roughness,the optimal DIW process parameters were a 0.41 mm nozzle internal diameter,100%filling rate,50%printing layer height/nozzle inter-nal diameter,and a 15 mm/s printing speed.Multiple linear regression models were developed for the process parameters and the printing accuracy,sintering shrinkage rate and surface roughness.The error rates between the theoretical results obtained by substituting the optimal process parameters into the multiple linear regression models and the actual results obtained by printing the samples with the optimal parameters were extremely small,all less than 0.8%.This verified the correctness and predictability of the multiple linear regression models.This work provides a reference basis for rapid fabrication of high-accuracy ceramics via DIW and accuracy prediction with different process parameters.

Additive manufacturing of thin electrolyte layers via inkjet printing of highly-stable ceramic inks

Inkjet printing is a promising alternative for the fabrication of thin film components for solid oxide fuel cells(SOFCs) due to its contactless, mask free, and controllable printing process. In order to obtain satisfying electrolyte thin layer structures in anode-supported SOFCs, the preparation of suitable electrolyte ceramic inks is a key. At present, such a kind of 8 mol% Y_(2)O_(3)-stabilized ZrO_(2)(8 YSZ) electrolyte ceramic ink with long-term stability and high solid loading(> 15 wt%) seems rare for precise inkjet printing, and a number of characterization and performance aspects of the inks, such as homogeneity, viscosity, and printability, should be studied. In this study, 8 YSZ ceramic inks of varied compositions were developed for inkjet printing of SOFC ceramic electrolyte layers. The dispersing effect of two types of dispersants, i.e., polyacrylic acid ammonium(PAANH4) and polyacrylic acid(PAA), were compared. The results show that ultrasonic dispersion treatment can help effectively disperse the ceramic particles in the inks. PAANH4 has a better dispersion effect for the inks developed in this study. The inks show excellent printable performance in the actual printing process. The stability of the ink can be maintained for a storage period of over 30 days with the help of initial ultrasonic dispersion. Finally, micron-size thin 8 YSZ electrolyte films were successfully fabricated through inkjet printing and sintering, based on the as-developed high solid loading 8 YSZ inks(20 wt%). The films show fully dense and intact structural morphology and smooth interfacial bonding, offering an improved structural quality of electrolyte for enhanced SOFC performance.

SiC浆料的流变性能及多孔陶瓷的直写成型

为了实现多孔SiC陶瓷孔隙结构和尺寸的精确控制和自由设计,基于SiC多孔陶瓷的直写成型,研究分散剂种类与含量、pH值、固相体积分数和增稠剂对SiC浆料流变性能的影响,进而采用优化后的浆料制备孔隙结构及尺寸可控的三维多孔结构SiC陶瓷。结果表明:浆料黏度随分散剂四甲基氢氧化铵(tetramethylammonium hydroxide,TMAH)含量的增加先减小后增大;调节浆料pH值至大于10,有利于降低浆料黏度;浆料黏度随固相体积分数的增大先增大后减小,最大固相体积分数为60%;随增稠剂甲基纤维素(methyl cellulose,MC)添加量的增加,浆料的屈服应力不断增大。优化后的SiC浆料,TMAH质量分数为0.4%,pH值>10,固相体积分数为60%,MC质量分数为0.06%。采用该浆料直写成型的SiC多孔陶瓷具有结构完整性高和干燥收缩率低的优点。

直写成型制备多孔陶瓷技术研究进展

多孔陶瓷具有耐高温、可控孔结构、高孔隙率、化学稳定性和生物惰性等特点,是应用于支柱、生物、催化和电气等领域的理想材料。传统多孔陶瓷的制造方法主要有颗粒堆积、添加造孔剂、发泡、溶胶-凝胶等。近年来,随着增材制造技术的发展,直写成型技术因其简单的设备构造和良好的浆料兼容性,被广泛应用于制造复杂结构和图案的多孔陶瓷。本文综述了直写成型多孔陶瓷的技术方法及其在各领域的应用,详细分析了直写成型技术制备多孔陶瓷材料的优劣势,提出了直写成型制备多孔陶瓷所面临的挑战,并对直写成型制备多孔陶瓷技术发展趋势进行了展望。

直写3D打印陶瓷基多孔结构的研究进展

陶瓷基多孔结构既继承致密陶瓷材料耐高温、电绝缘、化学稳定的优异性能,又兼具多孔结构低密度、高比表面积、低热导率的独特优势,已被广泛应用于隔热、骨组织工程、过滤及污染物清除、电子元器件等领域。但是,陶瓷基多孔结构的传统成孔方法在宏观尺度创造复杂几何外形与微纳尺度调控孔结构形态方面仍面临巨大挑战。近几十年来,研究人员一直致力于创新陶瓷基多孔结构的加工成型方法,以直写3D打印为代表的增材制造技术成为当前研究的热点,并迅速发展出一系列成熟理论与创新方法。本文首先概述了陶瓷基多孔结构的传统成孔方法与增材制造成孔方法,进一步详细介绍了直写组装成孔工艺过程,主要包括假塑性墨水配方、固化策略、干燥及后处理,分析了传统成孔方法与直写3D打印二者的组合技术在构筑陶瓷基多级孔结构方面的可行性,总结了直写3D打印技术在制造复杂陶瓷基多孔结构领域的新观点、新进展和新发现,最后结合陶瓷基多孔结构实际应用现状对直写3D技术的未来发展与挑战进行了展望。

陶瓷材料的DIW工艺在陶瓷基金刚石工具中应用的关键技术问题

浆料的直写成形技术(DIW)是一种基于浆料挤出的3D打印技术,其具有能耗低、成本低、打印速度快、无结构设计限制等优点。在概述DIW技术应用于陶瓷基金刚石工具优势的基础上,对其应用过程中的原料选择、浆料制备、打印适性及脱脂、烧结工艺等关键步骤进行探讨,并指出在浆料制备环节中需要重点关注的粉体团聚问题。同时,分析一些DIW制造工艺的研究实例。最后,指出DIW工艺制造陶瓷基金刚石工具应解决的关键问题。

基于DIW工艺的ZrO_(2)/PDMS复合陶瓷材料可打印性能研究

针对ZrO_(2)材料应用于手机背板以及其他3C电子产品的需求,以氧化锆作为分散相,PDMS作为连续相,将墨水直写工艺与该复合陶瓷材料的成型制备方法相结合,研究ZrO_(2)/PDMS复合陶瓷材料的可打印性能。在试验研究中,对不同分散相含量的浆料进行流变测试,测试结果表明配制的浆料具有非牛顿流体特性,当ZrO_(2)体积分数在25%~30%时,浆料用于墨水直写打印时较易挤出且成型较好,此时浆料的储能模量在10^5~10^6Pa,临界屈服应力在142~264 Pa。在此基础上,研究了不同配比、针头直径与挤出速度对挤出纤维形貌的影响,结果表明纤维膨胀比与变形比随着分散相含量的增加而减少,随着针头直径与挤出速度的增加而增加;在低分散相含量时更容易达到材料的临界屈服应力,纤维膨胀比和变形比大,纤维表面缺陷少,高分散相含量时材料强度提高,纤维膨胀比和变形比低,但较难挤出,且容易出现熔体破裂现象。当ZrO_(2)体积分数为28%,针头直径为1 mm,挤出速度为6 mm/s时纤维成型质量最优,表明ZrO_(2)/PDMS复合陶瓷材料可用于墨水直写工艺,从而为后续陶瓷构件的制造奠定基础。

多孔陶瓷的直写成型工艺研究进展

多孔陶瓷内部含有大量三维孔隙,具有轻质、高强、高比表面积、低导热系数等特性,但是多孔陶瓷的传统制备工艺对结构和性能的可控性较低,很难满足先进能源、航空航天、电子信息等领域的发展对多功能高性能材料的需求。直写成型工艺是一种制造成本低、材料使用性广、技术可拓展性高的3D打印工艺,不仅可以直接制备具有轻量化特点的多孔陶瓷,而且结合其他工艺可以实现多孔陶瓷的层级结构和多功能化,有望实现设计与制造、材料与器件、结构与功能的一体化。介绍了直写成型法3D打印多孔陶瓷的工艺原理,综述了直写成型法直接制备多孔陶瓷、直写成型结合乳液/泡沫法和冷冻干燥法制备层级多孔陶瓷的研究进展。由于工艺柔性高,直写成型法能够与其他方法良好融合,以制备具有特殊结构和性能的多孔材料,尤其是兼顾高强度、高孔隙率和形状可控性的层级多孔陶瓷。最后,总结了目前直写成型工艺制备多孔陶瓷的优势和不足,并对打印材料性能、打印设备和主要应用领域的发展进行了展望。

陶瓷绘画中的中国水墨语言研究--以青花为例

本文探讨了陶瓷绘画吸收借鉴中国水墨绘画语言的表现方式,以及这种语言融合对陶瓷绘画发展的正面影响。研究发现,当代青花瓷绘画在继承传统语言的基础上,汲取中水墨绘画语言的营养。陶瓷绘画吸收水墨绘画的题材、笔墨手法、结构布局等语言元素,丰富了自身的视觉表达,提升了意境描绘能力,拓展了审美价值维度。水墨语言为陶瓷绘画提供了传统文化资源,使其在当代语境中找到创新发展的契机,实现了语言的创造性传承。这一成功尝试也啟发当代艺术可以继续挖掘传统语言的活力。

抗菌陶瓷墨水的分散法制备及其性能研究

采用分散法制备抗菌陶瓷墨水,探讨了研磨时间对陶瓷墨水粒径的影响,以及抗菌剂添加量对抗菌性能的影响,利用激光粒度分布仪、表面张力仪、离心机等来表征陶瓷墨水的理化性能。结果表明:研磨3 h制备的陶瓷墨水平均粒径为400~500 nm,40℃时黏度为15.9~16.6 mPa·s,25℃时黏度为32.6~33.5 mPa·s,表面张力为32.1~33.2 mN·m^(-1),墨水经过离心实验稳定性良好。通过“酶—淀粉—碘液”实验测得,添加抗菌剂的陶瓷墨水抗菌效果较好。随着抗菌剂量的增加,抗菌性效果更好。

泼墨技法对现代陶瓷绘画的影响

泼墨技法在中国的绘画史上有着悠久的历史,本文在回顾泼墨技法的基础上,对其在陶瓷上的运用加以研究,并以自己的创作为例,希望能给读者一种新的艺术视角的享受。

泼墨技法对现代陶瓷绘画的影响

泼墨技法在中国的绘画史上有着悠久的历史,本文在回顾泼墨技法的基础上,对其在陶瓷上的运用加以研究,并以自己的创作为例,希望能给读者一种新的艺术视角的享受。

浅析中国水墨画在陶瓷青花山水画中的结合与运用

中国水墨画和陶瓷青花山水画是中国传统艺术中的两个重要流派,它们各具特色,但也有很多共同点。在中国传统艺术中,这两个流派常常结合,形成了一些精美绝伦的陶瓷作品。

浅析当代青花山水与文人画中笔墨意境的表现与融合

陶瓷绘画的发展与中国画有着密不可分的联系,从石器时代的彩陶艺术开始就为中国画的发展奠定了基础,国画的发展也推动了陶瓷绘画的形成。在中国绘画史上,文人画是一种庞大而又严密的中国绘画独特体系,它深远的意境和思想精髓深刻地影响着陶瓷艺术绘画的发展,在青花瓷绘、艺术创作中都有着充分的展现。本文以陶瓷青花山水绘画与文人画的笔墨意境、精神表现与融合展开论述。

中国水墨山水画对陶瓷山水画的影响

国画山水创作和发展历程,记录了中国手工艺者和艺术创作者的思想和追求,有其独特的时代背景与审美特色。本文从历代山水画中进行探索分析,将创作技巧运用到陶瓷山水的制作中,转化成陶瓷创作语言的新形式,促进陶瓷山水画的进一步创新与发展。