Fabrication of Tunable, Stable, and Predictable Superhydrophobic Coatings on Foam Ceramic Materials

Li, Xingang; Yan, Peng; Li, Hong; Gao, Xin

doi:10.1021/acs.iecr.6b02541

Cited by 21 publications

(9 citation statements)

References 43 publications

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“…Surface modification is a common method to control the surface wettability of a solid substrate. , The surface-modified stainless steel wire mesh (SSM) was prepared by using a spraying method . For the substrate of the nonsurface-modified stainless steel wire mesh (NSM), the water contact angle (θ*) was 70.6 ± 2.3° (denoted as α-70°).…”

Section: Methodsmentioning

confidence: 99%

Intensification of Droplet Dispersion by Using Multilayer Wire Mesh and Its Application in a Rotating Packed Bed

Chu

et al. 2020

Ind. Eng. Chem. Res.

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Liquid dispersion by impacting on wire mesh benefits many mass transfer processes. However, most of studies focused on the dispersion behaviors of liquid impacting on a one-layer wire mesh. In this work, the intensification of droplet dispersion by impacting on multilayer wire mesh was investigated as well as considering the influence of surface wettability. The dispersion characteristics (cone angle of dispersion θcone and average diameter of daughter droplets d avg) were systematically analyzed. θcone enlarged by 44% and d avg decreased by 12% on average when increasing the water contact angle of the wire mesh from α-70° to α-155°. Empirical correlations for predicting θcone and d avg were proposed. The predicted values agreed well with the experimental data. The intensification of liquid dispersion by using multilayer wire mesh was applied in the inner cavity zone of a rotating packed bed (RPB), leading to a significant improvement of gas–liquid mass transfer performance.

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Section: Methodsmentioning

confidence: 99%

Intensification of Droplet Dispersion by Using Multilayer Wire Mesh and Its Application in a Rotating Packed Bed

Chu

et al. 2020

Ind. Eng. Chem. Res.

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“…It consists of several steps—in brief, sol solution preparation, dip coating, chemical surface modification and, finally, annealing. The details can be found in our previous publication …”

Section: Methodsmentioning

confidence: 99%

“…Regarding typical gas–liquid contacting devices, namely, perforated trays, some research has been conducted to explore the contact angle effect based on foam SiC column trays and Janus sieve trays in our research group . The results show that a higher contact angle leads to a lesser pressure drop, higher weeping rate, and better gas distribution.…”

Section: Introductionmentioning

confidence: 99%

“…Many emerging studies have emphasized the interfacial wettability effects on multiphase transport processes. Specifically, interfacial wettability effects have been investigated in terms of fluid dynamics (drag reduction and wet particle collision), hydrodynamics (membrane bubbling and sieve tray), heat transfer and anti‐icing, oil recovery, oil–water separation, micro‐reactor technology, and so forth.…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamics and mechanism of hydrophobic foam column tray: Contact angle hysteresis effect

Yan

et al. 2019

AIChE Journal

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Interfacial wettability adjustment is a new method for intensifying vapor-liquid mass transfer process. Contact angle effect has been well investigated but not complete due to interfacial wettability consisting of both static behavior (contact angle) and dynamic behavior (contact angle hysteresis). Here, methods of adjusting contact angle hysteresis (CAH) were proposed, and then, the CAH effect on the hydrodynamics was investigated. A multiscale analysis of CAH effect, from interfacial force and wettability to single-bubble and gas-liquid two-phase flow inside the foam to bubble swarm hydrodynamics, was conducted, and thus, the hydrodynamic performance criteria were derived. The interfaces had similar contact angles, whereas a significant difference in the CAH was prepared by using the developed sol dip-coating and spray coating methods. Subsequent experiments revealed that lower CAH can decrease the pressure drop, homogenize the gas distribution, and increase the weeping rate, which are consistent with the derived criteria.

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“…eir experimental research suggests using nanostructured zirconia as a potentially robust alternative material for the construction of the internal trim components of petrochemical valves. Li et al [26,27] examined the hydrodynamic performances and mass transfer efficiency of a SiC foam monolithic tray. e research results indicate that the hydrodynamics and mass transfer performances of the foam monolithic tray meet the requirements for the mass transfer of elements in the distillation column, which thus has higher operation flexibility and significantly reduces capital costs at the industrial scale.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of ZrO2 Coating on the Ball Joint of an Axial Piston Pump in High Water-Based Emulsion Medium

Kou

Zhang

et al. 2021

Mathematical Problems in Engineering

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This paper studies the tribological properties of the ZrO2-coated spherical joint pair of the axial piston pump in a high water-based emulsion medium. Firstly, atmospheric plasma spraying was used to prepare the ZrO2 coating on the surface of the spherical joint pair. Secondly, the tribological characteristics of the steel-steel pair and ceramic-ceramic pair were analyzed by the friction and wear testing machine under the conditions of a high water-based emulsion concentration, load size, and load frequency. White light interference three-dimensional surface profiler and scanning electron microscope were used to analyze the original and worn surfaces of the samples, and then the friction and wear of the different material pairs were discussed. The results show that the friction reduction and wear resistance of the ceramic ball joint are superior to those of the steel ball joint. When the load is 100 N, the frequency is 1 Hz, and the emulsion concentration is 5%, and the friction coefficient and wear loss of the ceramic-ceramic ball joint pair are the lowest. The emulsion concentration and load have great influence on the friction coefficient and wear amount, while the frequency has little influence on them. With increasing concentration of the emulsion, the friction coefficient decreases and tends to be stable, but with increasing of load, the friction coefficient and wear increase. The friction coefficient and wear loss of the ceramic-ceramic ball joint in pure water are 0.25 times higher than those of the steel ball joint under the same working conditions. Therefore, when the concentration of the high water-based emulsion is 5%, 100 N load, 1 Hz frequency, the ceramic-ceramic ball joints display the best friction and wear resistance of the two. The research results provide a theoretical basis for the design, manufacture, and application of the ceramic coating hydraulic components in a high water-based emulsion medium.

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Fabrication of Tunable, Stable, and Predictable Superhydrophobic Coatings on Foam Ceramic Materials

Cited by 21 publications

References 43 publications

Intensification of Droplet Dispersion by Using Multilayer Wire Mesh and Its Application in a Rotating Packed Bed

Intensification of Droplet Dispersion by Using Multilayer Wire Mesh and Its Application in a Rotating Packed Bed

Hydrodynamics and mechanism of hydrophobic foam column tray: Contact angle hysteresis effect

Tribological Properties of ZrO2 Coating on the Ball Joint of an Axial Piston Pump in High Water-Based Emulsion Medium

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