Ink‐Jet Printing of Wax‐Based Alumina Suspensions

Seerden, K. A. M.; Reis, Nuno; Evans, Julian; Grant, Patrick S.; Halloran, John W.; Derby, Brian

doi:10.1111/j.1151-2916.2001.tb01045.x

Cited by 216 publications

(164 citation statements)

References 20 publications

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“…Hence a different dispersant system based on a commercial polyester was studied. Previous work on alumina had identified the Hypermer series of dispersants as being particularly effective with alumina [5,6] and these were explored for use with PZT. It is well known that a combination of long chain and short chain surfactant molecules can be particularly effective in dispersing ceramics particles [71.…”

Section: Resultsmentioning

confidence: 99%

“…It is well known that a combination of long chain and short chain surfactant molecules can be particularly effective in dispersing ceramics particles [71. Earlier work had shown that Hypermer LPI can be used with octadecanoic acid (stearic acid) and octadecylamine to produce suspensions of alumina in wax with very low viscosity [5,61 Suspensions of PZT in wax were prepared containing 1 wt% Hypermer LP1 and 0.5 wt% octadecylamine and a range of PZT powder concentrations. These were ball milled for 6 hours at 120 °C to ensure adequate dispersion.…”

Section: Resultsmentioning

confidence: 99%

“…Our earlier work on ceramic ink-jet printing used alumina powders suspended in low melting point alkane (paraffin) waxes [5,6]. These suspensions solidify on impact and build up a thickness more rapidly than do deposits that solidify by evaporation.…”

Section: Introductionmentioning

confidence: 99%

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Development of PZT Suspensions for Ceramic Ink-Jet Printing

et al. 2002

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The direct ink-jet printing of ceramic powders requires the development of highly fluid suspensions of ceramic particles with viscosity < 40 mPas. Here we describe the development of two such ceramic suspensions, which contain up to 30% by volume of PZT particles in either an azeotropic mixture of MEK and ethanol or in an alkane wax at 120 'C. The influence of various processing parameters on fluid theology are investigated and trial fluids have been passed through an ink-jet printing head.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Development of PZT Suspensions for Ceramic Ink-Jet Printing

et al. 2002

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“…Attempts have been made to prepare ceramic inks in the form of zirconia suspension and suspension of alumina powder in paraffin wax with viscosity values sufficiently low to allow inkjet printing using a commercially available printer [3][4][5] . In these studies, viscosity, surface tension, and dispersion achieved in the inks, drying rate, and green strength of the deposit were considered.…”

Section: Preparation Of Ceramic Inkmentioning

confidence: 99%

Rheological Behaviour of Ceramic Inks for Direct Ceramic Inkjet Printing

Ponnambalam

Ramakrishnan

Rajesh

et al. 2006

DSJ

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In this paper, studies were made on the preparation of ceramic inks with: (i) alumina powder in ethyl alcohol and (ii) zirconia powder in ethyl alcohol at different volume fractions of ceramic. Different amounts (0.75-3.00 vol %) of an organic dispersant (oleic acid) were added to ceramic ink containing 5 per cent of ceramic by volume in ethyl alcohol. The viscosities of the suspensions were determined with Brookefield viscometer (model: DV-E), which is suitable for measuring the viscosities of suspensions accurately. These inks were deposited on a substrate to see their spread. The sediment packing densities ( m ) of the resulting suspensions were calculated using theoretical models which can be related to the density that can be achieved in the final product. The highest sediment packing density was arrived at low viscosity values of the ink and occurred when 1 per cent of dispersant by volume was used for 5 per cent alumina content. For 5 per cent zirconia content, 2 per cent of dispersant by volume gave a similar result. Experiments were also conducted to find the value of m for different solid loadings (5-25 vol %) of ceramic with 1 per cent dispersant. It was observed that the sediment packing density and the apparent viscosities were increasing when solid loading concentrations were increased for both alumina and zirconia-based inks. The optimum value of m and viscosity have been determined from this study. The results of this preliminary study will be useful for further investigations on the rheological behaviour of ceramic inks for direct ceramic inkjet printing.

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“…Drop impact onto a solid surface is a key process in many applications involving electronic fabrication 1 , spray coating 2 , and additive manufacturing using inkjet printing 3,4 , where a precise control of drop spreading and splashing is desired. However, direct observation of drop impact is technically challenging for two reasons.…”

Section: Introductionmentioning

confidence: 99%

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Peters

Wilken

et al. 2014

JoVE

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In the field of fluid mechanics, many dynamical processes not only occur over a very short time interval but also require high spatial resolution for detailed observation, scenarios that make it challenging to observe with conventional imaging systems. One of these is the drop impact of liquids, which usually happens within one tenth of millisecond. To tackle this challenge, a fast imaging technique is introduced that combines a high-speed camera (capable of up to one million frames per second) with a macro lens with long working distance to bring the spatial resolution of the image down to 10 µm/pixel. The imaging technique enables precise measurement of relevant fluid dynamic quantities, such as the flow field, the spreading distance and the splashing speed, from analysis of the recorded video. To demonstrate the capabilities of this visualization system, the impact dynamics when droplets of non-Newtonian fluids impinge on a flat hard surface are characterized. Two situations are considered: for oxidized liquid metal droplets we focus on the spreading behavior, and for densely packed suspensions we determine the onset of splashing. More generally, the combination of high temporal and spatial imaging resolution introduced here offers advantages for studying fast dynamics across a wide range of microscale phenomena. Video LinkThe video component of this article can be found at

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Ink‐Jet Printing of Wax‐Based Alumina Suspensions

Cited by 216 publications

References 20 publications

Development of PZT Suspensions for Ceramic Ink-Jet Printing

Development of PZT Suspensions for Ceramic Ink-Jet Printing

Rheological Behaviour of Ceramic Inks for Direct Ceramic Inkjet Printing

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

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