Material Consumption and Dry Film Thickness in Spray Coating Process

Luangkularb, S.; Prombanpong, Suksan; Tangwarodomnukun, Viboon

doi:10.1016/j.procir.2014.02.046

Cited by 27 publications

(12 citation statements)

References 9 publications

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“…As shown in Figure f, more spikes are observed in the fully coated substrate due to the three nonuniform passes of the coating, which yielded an average roughness of 3.4 μm. The thickness of the sprayed layer can be adjusted by controlling the spray time, nozzle size, spray angle and distance, spray passes, air pressure, and more. , Moreover, other polymeric materials and coating techniques can be used to produce much thinner and smoother films. In the case of the plain PVA substrate, it is speculated that the surface roughness can be beneficial to the transferring process in a sense that, when the PVA dissolves, the microcrinkles from the roughness will accommodate any microexpansion, preventing the formation of cracks.…”

Section: Resultsmentioning

confidence: 99%

Water-Transferred, Inkjet-Printed Supercapacitors toward Conformal and Epidermal Energy Storage

Giannakou

Tas

Borgne

et al. 2020

ACS Appl. Mater. Interfaces

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Rapid growth of the internet of things and health monitoring systems have stimulated the development of flexible, wearable, and conformal embedded electronics with the unprecedented need for energy storage systems fully adaptable to diverse form factors. Conventional fabrication methods, such as photolithography for electronics and electrode winding/stacking for energy storage systems, struggle as fabrication strategies to produce devices with three-dimensional, stretchable, and conformal form factors. In this study, we demonstrate the fabrication of supercapacitors on 3D objects through inkjet and water-transfer printing. The devices are initially printed on a water-soluble substrate, which is then placed on the surface of water. Once the substrate is dissolved, the level of water is lowered until the devices are transferred on to the submerged 3D object. As a proof of concept, planar supercapacitors constituted of a silver nanoparticle-based current collector, nickel(II) oxide (NiO) nanoparticle-based active electrodes, and ultraviolet-cured triacrylate polymer-based solid-state electrolyte were used as model materials. The conformal supercapacitors showed a maximum areal capacitance of 87.2 mF·cm–2 at a voltage window of 0–1.5 V. Moreover, the concept of water transfer was further explored with a particular focus on wearable applications by transferring the supercapacitors onto the skin of a human subject to realize epidermal energy storage. This new class of conformal electrochemical energy storage offers a new alternative approach toward monolithically integrated/object-tailored energy storage systems that are essential for complex-shaped devices for internet of things and flexible/on-skin electronic applications.

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Section: Resultsmentioning

confidence: 99%

Water-Transferred, Inkjet-Printed Supercapacitors toward Conformal and Epidermal Energy Storage

Giannakou

Tas

Borgne

et al. 2020

ACS Appl. Mater. Interfaces

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“…2,[38][39][40][41][42] In the current experimental study, the ABB IRB 1410 1 automated robot painting system is used to test these three primary factors with various concentration levels and combinations to determine the performance characteristics. The output is tested in terms of surface roughness (SR), thickness variation (TV), 43,44 and film adhesion (FA) as they come under the control factors, as depicted in Figure 1. Similar experimental analysis is conducted using high volume low pressure (HVLP) in the manual painting method.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy logic expert system with multi-objective optimization of carbon nanotube infused nanopaint surface characteristics analysis using IRB 1410 robot

Jakkula

Sethuramalingam

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this investigative study, the Taguchi design (L9) of experiments with TOPSIS multi-objective optimization is used for the robot nanopainting. The optimization objective is to maximize the film glue individually and minimize the surface blemishes and film thickness by varying the IRB 1410 robot painting parameters, such as the robot speed, pressure, and distance. The multi-wall carbon nanotube is infused into the paint materials using the ultrasonication process, and the mechanical properties are analysed with a comparison to regular paint materials. The virtual robot cycle time analysis is carried out for three different robot pathway patterns, namely linear, zig-zag, and circular. It is then compared with real-time experimental robot nanopaint on cold rolled close annealing steel materials. The obtained results show that surface roughness and thickness are minimized by 54% and 33.4%, respectively, using the robot nano spray coating when compared with regular spray coating. The film adhesive of robot Nano spray coating is maximized by 2.8% more than normal spray coating. A fuzzy logic expert system model is used to evaluate the surface finish characteristics of the nanopaint surface with low prediction error and with 89.2% confidence level. Heat transfer analysis of the robot nano-coated substrate is compared with that of the robot normal-coated substrate.

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“…Coating process optimization technology could reduce paint consumption while maintaining surface quality [6][7][8]. Additionally, spray-coating modeling has been investigated as a means of predicting coating thickness [9]. Research has been conducted to understand the mechanism behind coating film formation using spray coating [10,11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Coating Film Formation Process Using the Fluorescence Method

2021

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In this paper, we invented a novel observation method of the coating film formation process using the fluorescence method. With this method, the temporal change in the coating film thickness can be evaluated quantitatively. In addition, since the thickness and flow of the coating film can be measured simultaneously, the detailed coating film formation process was clarified. In the experiment, the adhesion behavior of the spray-paint droplets when applied to a wall was investigated. The characteristics of coating films formed by the spray droplets, particularly the influence of injection pressure on the coating film formation, were determined using the fluorescence method. At the initial stage of the coating process, the coating area increased linearly. When the ratio of the coating area to the measurement range reached about 80%, the rate at which the coating area increased slowed down, and an overlap began. The amount of paint that adhered to the coating film formation could be estimated by calculating the overlap ratio. Moreover, the thickness and smoothness of the coating film were evaluated using the histogram data of the fluorescence intensity. The leveling process was discussed in relation to the standard deviation of the histogram data. In addition, the flow of the paint during the coating film formation was investigated using tracer particles, and the effect of the spray gun injection pressure on the leveling process was investigated. Changes in the film thickness and flow during the coating film formation process could be evaluated through fluorescence observation.

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Material Consumption and Dry Film Thickness in Spray Coating Process

Cited by 27 publications

References 9 publications

Water-Transferred, Inkjet-Printed Supercapacitors toward Conformal and Epidermal Energy Storage

Water-Transferred, Inkjet-Printed Supercapacitors toward Conformal and Epidermal Energy Storage

Fuzzy logic expert system with multi-objective optimization of carbon nanotube infused nanopaint surface characteristics analysis using IRB 1410 robot

Evaluation of Coating Film Formation Process Using the Fluorescence Method

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