Superhydrophobic coatings based on colloid silica and fluorocopolymer

Liu, Hui; Xiao, Jingfan; Li-ping, Zheng; Xiong, Mingna; Zhu, Yan‐Rong; Qian, Jun; Zhuang, Qixin; Han, Zhewen

doi:10.1016/j.polymer.2016.01.026

Cited by 32 publications

(16 citation statements)

References 33 publications

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“…Colloidal silica with a particle size of 340 nm was synthesized by the Stober method. The detailed synthetic approach is described in our previous paper [24]. The detailed procedure for preparing fluorine-functionalized colloidal silica (340 nm) is also described in our previous paper.…”

Section: Synthesis Of Colloidal Silica and Preparation Of Fluorine-an...mentioning

confidence: 99%

“…The coating integrity was evaluated by a manually performed Q-tip abrasion test, and the superhydrophobicity of the areas after Q-tip abrasion was tested by water droplet roll-off behavior; the detailed rating criteria are described in our previous paper [24]. The higher the rating, the better the abrasion resistance and the superhydrophobicity.…”

Section: Characterizationmentioning

confidence: 99%

“…The degree of condensation around the silicon atom could be represented by the 29 Si peaks, which are typically referred to as the 'Q' peaks, including Q1, Q2, Q3, and Q4. A detailed description of Q peaks is described in our previous paper [24]. The 29 Si solid-state NMR spectrum of fluorine-modified colloidal silica and unmodified silica with a particle size of 340 nm is shown in Figure 5.…”

Section: Surface Functionalization Of Colloidal Silicamentioning

confidence: 99%

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Fluorine-Free Superhydrophobic Coatings Based on Silicone and Functionalized Colloidal Silica

Liu¹,

Xiao²,

Xiong³

et al. 2019

Coatings

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Recently, fluorine materials have been a serious cause of environmental concern. In response, a novel fluorine-free superhydrophobic coating is presented in this paper. A superhydrophobic coating based on silicone and surface-modified colloidal silica is explored and exploited. First, a superhydrophobic coating, based on silicone resins and fluorine group-modified colloidal silica, is developed. Then, the fluorine group-modified colloidal silica is replaced by octyl-modified colloidal silica, a superhydrophobic coating based on fluorine-free materials, octyl-functionalized colloidal silica, and epoxy-modified silicone. The hydrophobicity and coating integrity were investigated, and the fluorine-free coating shows good superhydrophobicity and coating integrity. The result demonstrates the feasibility of a fluorine-free superhydrophobic coating, thus providing an effective solution to the environmental problems caused by fluorine chemicals.

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Section: Synthesis Of Colloidal Silica and Preparation Of Fluorine-an...mentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Section: Surface Functionalization Of Colloidal Silicamentioning

confidence: 99%

See 1 more Smart Citation

Fluorine-Free Superhydrophobic Coatings Based on Silicone and Functionalized Colloidal Silica

Liu¹,

Xiao²,

Xiong³

et al. 2019

Coatings

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“…These surfaces are called as superhydrophobic with a water contact angle (WCA) higher than 150°and a sliding angle (SA) lower than 10° [6]. The following conditions are necessary to fabricate a superhydrophobic surface: (i) creation of hierarchical rough surface [7] and (ii) chemical modification of rough surface with low surface energy materials [8]. The most popular methods to create superhydrophobic surfaces are plasma etching [9], sol-gel [10], electrospinning [11], layer by layer assembly [12], phase separation [13], and solution immersion [14].…”

Section: Introductionmentioning

confidence: 99%

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Basiron

Sreekantan

Saharudin

et al. 2018

Journal of Nanomaterials

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In this present work, a superhydrophobic glass surface comprising zinc oxide nanotriangles (ZnO-nt) and nontoxic silylating agent was developed via a cost-effective spray-coating technology. ZnO-nt was synthesized by a hydrothermal method. Poly(dimethylsiloxane) (PDMS) and dimethyldiethoxysilane (DMDEOS) were used as nontoxic (nonfluoro) silylating agents. The morphology and crystallinity of ZnO-nt were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. ZnO-nt with polymeric silane (PDMS) exhibited maximum wettability as compared to nonpolymeric silane (DMDEOS). The water contact angle (WCA), sliding angle (SA), and surface roughness of ZnO-nt/PDMS-coated glass substrate under UV treatment were 165 ± 1°, 3 ± 1°, and 791 nm, respectively. The WCA of ZnO-nt/PDMS was higher (165°) than that of commercial ZnO/PDMS (ZnO-C/PDMS). ZnO-nt/PDMS was strongly attached to the glass substrate with good stability and adhesion. The reasons for improved hydrophobicity, adhesion, and mechanism of hierarchical microstructure formation on the glass substrate were explained in detail. PDMS was attached to the glass substrate via hydrogen bonds from solvated zinc acetate.

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“…Superhydrophobic surfaces are defined as substrates which will cause a residing water droplet to take on an apparent advancing or receding contact angle greater than 150°, when measured from the liquid–solid interface to the liquid–vapor interface . Due to the low droplet-surface adhesion, characterized by low contact angle hysteresis and roll-off angle, , superhydrophobic surfaces have many uses in self-cleaning, antifogging, − antifouling, , anticorrosion, − antibacterial, − anti-icing, ,, enhanced condensation, − energy harvesting, − and drag reduction − applications.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Surfaces Made from Naturally Derived Hydrophobic Materials

Razavi

Sett

et al. 2017

ACS Sustainable Chem. Eng.

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Functional coatings that can achieve stable superhydrophobicity have the potential to significantly enhance a plethora of industrial applications ranging from building environmental control, phase change heat transfer, thermoelectric power generation, and hydrodynamic drag reduction. In order to create superhydrophobic surfaces, scientists have utilized a variety of surface structuring methods in combination with organosilane based alkyl and perfluorinated synthetic chemical coatings. Unfortunately, organosilane based alkyl and perfluorinated chemicals tend to be toxic, flammable, corrosive, difficult to dispose of, and damaging to the environment. Here, we develop two new methods to achieve superhydrophobicity using liquid phase deposition of cinnamic acid or myristic acid, both organic compounds derived from natural sources. By varying the liquid phase solution concentration, we develop deposition methods on scalable copper oxide microstructured surfaces capable of achieving apparent advancing contact angles as high as 154° and 165° for cinnamic and myristic acid, respectively, with low contact angle hysteresis (<15°). To demonstrate superhydrophobic performance, we utilize high speed optical microscopy to show stable coalescence induced droplet jumping during atmospheric water vapor condensation. This study presents a novel avenue for safer and more environmentally friendly fabrication of superhydrophobic surfaces for energy and water applications.

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Superhydrophobic coatings based on colloid silica and fluorocopolymer

Cited by 32 publications

References 33 publications

Fluorine-Free Superhydrophobic Coatings Based on Silicone and Functionalized Colloidal Silica

Fluorine-Free Superhydrophobic Coatings Based on Silicone and Functionalized Colloidal Silica

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Superhydrophobic Surfaces Made from Naturally Derived Hydrophobic Materials

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