Highly transparent and thermally stable superhydrophobic coatings from the deposition of silica aerogels

Lin, Jinbin; Chen, Hongling; Fei, Ting; Liu, Chang; Zhang, Jinlong

doi:10.1016/j.apsusc.2013.02.134

Cited by 68 publications

(33 citation statements)

References 53 publications

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“…An attempt was also made to enhance the thermal stability [3,[57][58][59][60][61][62] of these wear abrasion resistant coatings. By thermal stability we mean the ability of the nanocomposites to maintain their water repellency after being exposed to temperatures in excess of 400°C.…”

Section: Resultsmentioning

confidence: 99%

Analysis of wear abrasion resistance of superhydrophobic acrylonitrile butadiene styrene rubber (ABS) nanocomposites

Milionis

Languasco

Loth

et al. 2015

Chemical Engineering Journal

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Please cite this article as: A. Milionis, J. Languasco, E. Loth, I.S. Bayer, Analysis of wear abrasion resistance of superhydrophobic acrylonitrile butadiene styrene rubber (ABS) nanocomposites, Chemical Engineering Journal (2015), doi: http://dx.ABSTRACT Acrylonitrile butadiene styrene rubber (ABS) superhydrophobic nanocomposites containing various concentrations of hydrophobic silica nanoparticles were obtained by solution processing and spray coating on aluminum surfaces. Wear abrasion resistance measurements were conducted on the superhydrophobic nanocomposites as function of silica nanoparticle concentration. A remarkable increase in coating wear abrasion resistance (1700 linear abrasion cycles under 20.5 kPa) was measured when the nanocomposite coatings were fortified with a synthetic rubber resin adhesive Plasti Dip™. Detailed wetting measurements before and during abrasion cycles were performed. Changes in surface microtexture were monitored with scanning electron microscopy (SEM) as well as confocal microscopy for surface roughness changes. Wear abrasion of sufficiently thick coatings indicated that there was wear similarity (maintenance of hierarchical texture) throughout the coating thickness during cyclic abrasion. Thermal resistance of the coatings was improved by applying a thin primer layer containing multi-walled carbon nanotubes dispersed in a fluoracrylic polymer solution (Capstone ST-110). The superhydrophobicity of the coatings did not degrade until 420 o C. Simplicity of the process and commercial availability of the materials in large scale can open many practical applications of this coating material system in which water-repellent, wear abrasion resistance is needed particularly for metal surfaces.2

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Section: Resultsmentioning

confidence: 99%

Analysis of wear abrasion resistance of superhydrophobic acrylonitrile butadiene styrene rubber (ABS) nanocomposites

Milionis

Languasco

Loth

et al. 2015

Chemical Engineering Journal

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“…As explained by Cassie [1,3], a liquid droplet residing on the composite surface (here especially for the composite surface of air and solid) has a resulting contact angle in the form of cos θ * = -1+ φ s (1+cos θ), where in above equation 'φ s 'designates the fraction of solid surface being in touch with the liquid drop, and 'θ * ' is the intrinsic contact angle of the flat surface with the same chemical components. Various techniques have been developed to produce the lotus leaf effect such as phase separation [4], chemical vapour deposition [5,6], sol-gel processing [7][8][9][10][11], chemical etching [12,13] electro spinning [14][15][16][17][18], self-assembly [19][20][21][22][23]. Most of the techniques require special equipment and cannot be used on different kind of materials.…”

Section: Introductionmentioning

confidence: 99%

Effect on superhydrophobic surfaces on electrical porcelain insulator, improved technique at polluted areas for longer life and reliability

Ramalla

Gupta²,

Bansal³

2015

IJET

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This paper proposes a novel technique to enhance the stability of high-voltage insulators, which are affected due to the presence of dust, contamination, electrical stresses in a high moisture content environment. These result in puncture of insulators and heavy loss due to power outages in the transmission lines. To extend its stability, powdered coating is done on the insulators which have insulation property and super hydrophobicity. In this paper, the authors were inspired by the 'lotus effect', and a nano size powder was developed by sol -gel method and coating is done on the porcelain insulator surface, which passes-out all the electrical testing standards and maintains its insulation property with super hydrophobic nature. The water droplet contact angle of 158.8 0 and a sliding angle of 8 0 indicate the super hydrophobic nature on the surface of insulator. The insulator was kept in a highly polluted environment for six months at different locations where no dust was collected on the insulator when compared with an uncoated insulator.

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“…Figure 3(b), (c), and (d) illustrate the high-resolution spectra for C1s, O1s, and Si2p, respectively. C1s peak is decomposed into three components at 283.98 eV, 284.6 eV, and 285.8 eV assigned to -Si-C*H 3 [29,30], -CH 2 -C*H 3 [31,32], and -O-C*H 2 -CH 3 [29], respectively. The first component represents the hydrophobic functional groups, whereas the latter two are derived from the incomplete hydrolysis of TEOS.…”

Section: Xps Analysismentioning

confidence: 99%

“…The first component represents the hydrophobic functional groups, whereas the latter two are derived from the incomplete hydrolysis of TEOS. O1s peak is decomposed into four components at 532.14 eV, 531.6 eV, 533.11 eV, and 534.1 eV assigned to SiO* 2 [29,33], -O*-Si-CH 3 [34], -O*H [29,33], and Si-O*-C [35],…”

Section: Xps Analysismentioning

confidence: 99%

The durability of superhydrophobic films

Wang

Jiang

2015

Applied Surface Science

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Highly transparent and thermally stable superhydrophobic coatings from the deposition of silica aerogels

Cited by 68 publications

References 53 publications

Analysis of wear abrasion resistance of superhydrophobic acrylonitrile butadiene styrene rubber (ABS) nanocomposites

Analysis of wear abrasion resistance of superhydrophobic acrylonitrile butadiene styrene rubber (ABS) nanocomposites

Effect on superhydrophobic surfaces on electrical porcelain insulator, improved technique at polluted areas for longer life and reliability

The durability of superhydrophobic films

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