The development of coatings that give superhydrophobic properties to the surface of silicone rubber

Бойнович, Л. Б.; Emelyanenko, Alexandre M.; Музафаров, А. М.; Myshkovskii, A. M.; Пашинин, А. С.; Tsivadze, А. Yu.; Yarova, D. I.

doi:10.1134/s1995078008090085

Cited by 18 publications

(11 citation statements)

References 7 publications

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“…A comparison of WCA values shows that silica Aerosil 130 (it has bigger particles: 16 nm) produces a greater roughness of modified surface than silica Aerosil 300 (7 nm), which in combination with the modification with silsesquioxane with the highest number of fluoroalkyl groups (6) makes it possible to obtain superhydrophobic surfaces. The results correlate well with those described for the surface modified with large particle size silica and with fluorofunctional silanes having long fluoroalkyl chains [34][35][36][37][38][39]. The WCA values for such surfaces are sometimes even greater (although not so considerably) which shows that the structure of silsesquioxanes additionally diversifies the surface.…”

Section: Resultssupporting

confidence: 78%

“…3 General procedure for the modification of glass plates that described above. The application of silica of different particle sizes in order to increase the surface roughness and thereby to create superhydrophobic properties has been reported by different research teams [34][35][36][37][38][39]. However, in all the cases the role of hydrophobizing agents was played by silanes with long fluoroalkyl chains of high fluorine content, the synthesis of which is neither easy nor cheap.…”

Section: Resultsmentioning

confidence: 99%

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Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

Maciejewski

Karasiewicz

Dutkiewicz

et al. 2014

Silicon

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Consecutive hydrosilylation-based syntheses were performed of silsesquioxanes containing mixed groups 1H,1H,2H,2H-perfluorooctyl (PFD) or octafluoropentyloxypropyl (OFP) and trimethoxysilylethyl (TMS) in different stoichiometric ratios. The presence of TMS makes it possible to form covalent bonds with substrates due to the reactivity of this group. All obtained derivatives were applied to hydrophobization of glass plates and by comparison of water contact angles (WCA) on modified surfaces the effect of silsesquioxane structure as well as TMS and fluoroalkyl group contents on hydrophobic properties was determined. Moreover, an additional glass plates surface modification was performed in order to obtain superhydrophobic surfaces. Two silica types of different specific surface (300 and 130 m 2 /g) and particle size (7 and 16 nm) parameters were used in this case for initial surface modification in order to increase its roughness. Irrespectively of particle size of applied silica, a dependence was found between the increase in water contact angle and the number of fluoroalkyl substituents in a molecule.

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Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

Maciejewski

Karasiewicz

Dutkiewicz

et al. 2014

Silicon

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“…It was based on the digital process ing of the video image of the drop. The measurement details and the technique for studying the evolution of the contact angle upon prolonged contact between the studied surface and aqueous drop are described at length in [16,17].…”

Section: Materials and Research Techniquesmentioning

confidence: 99%

Superhydrophobic coatings based on boron nitride nanotubes: The mechanism of superhydrophobicity and self-regeneration of highly hydrophobic properties

et al. 2011

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The mechanism of superhydrophobicity is discussed for coatings based on boron nitride nano tubes, i.e., on a material with high surface energy. It is shown that the thermodynamic stability of the super hydrophobic state is related to a surface roughness determined by nanotube packing and a decrease in surface energy due to the adsorption of hydrocarbon contaminants. The phenomenon of self regeneration of highly hydrophobic properties is observed after the removal of organic impurities from the surface using different methods. The possibility for the cyclic switching of wettability from superhydrophobicity to hydrophilicity and back is demonstrated by successive coating treatment in plasma at a variation of its composition from atomic hydrogen plasma to methane plasma.

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“…Further, in high-temperature and polluted areas, the maintenance cycle is greatly reduced. 12,13 Due to the limitations of the surface coating in practical applications, some researchers have further improved the hydrophobicity of the surface by directly processing the silicone rubber. The surface of poly (dimethylsiloxane) (PDMS) could be modified by the techniques such as plasma treatment, UV/ozone, and corona discharge to improve the hydrophobicity.…”

Section: Introductionmentioning

confidence: 99%

“…However, in order to ensure the effectiveness of the coating, regular in situ maintenance, including cleaning and recoating, is required. Further, in high‐temperature and polluted areas, the maintenance cycle is greatly reduced 12,13 …”

Section: Introductionmentioning

confidence: 99%

Hydrophobic recovery of femtosecond laser processed silicone rubber insulator surfaces

Chen

Nie

et al. 2021

J of Applied Polymer Sci

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This article demonstrates the loss and recovery in hydrophobicity of silicone rubber insulator surface processed by a femtosecond laser. The two stages of the wettability conversion were investigated. First, a rough micro/nano structure was formed on the original hydrophobic sample surface processed by the femtosecond laser, and the water contact angle on the surface was reduced from 110 to a minimum of 35 . This hydrophilicity loss was due to the increase in the hydrophilic OH groups and the reduction of the hydrophobic CH 3 groups on the surfaces. Second, the roughened samples were stored in a natural ambient environment. Over a certain storage time, the surface hydrophobicity recovered gradually and evolved into a superhydrophobic state. It was found that the migration of low molecular weight cycle and/or linear siloxane oligomers resulted in the recovery of the hydrophobicity property.Coupled with the increase of surface roughness caused by laser irradiation, the further evolution of the hydrophobicity was promoted. Moreover, the higher temperature accelerates the recovery of the surface hydrophobicity. The research on the conversion mechanism of the wettability on the silicone rubber insulator surface processed by femtosecond laser is of great significance for improving its reliability in practical applications.

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The development of coatings that give superhydrophobic properties to the surface of silicone rubber

Cited by 18 publications

References 7 publications

Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

Superhydrophobic coatings based on boron nitride nanotubes: The mechanism of superhydrophobicity and self-regeneration of highly hydrophobic properties

Hydrophobic recovery of femtosecond laser processed silicone rubber insulator surfaces

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