Facile, solvent-free fabrication of a robust 3-dimensional continuous superhydrophobic coating with wettability control and abrasion healing

Liu, Maolin; Jia, Demin

doi:10.1016/j.cej.2019.02.162

Cited by 42 publications

(15 citation statements)

References 47 publications

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“…After 100 cycles of abrasion, the CA was still above 150° (Figure e) while the thickness decreased to about 10 μm. We have adopted harsher test conditions for the abrasion test regarding the loading pressure and sandpaper roughness as compared to other reported SH surfaces. ,, Mechanical abrasion was conducted with a grit 220 sandpaper rubbing under 9.8 kPa. This is a very harsh condition, as it quickly removes all unsubstantial components.…”

Section: Resultsmentioning

confidence: 99%

“…40,43 Meanwhile, we have conducted the abrasion up to 100 cycles, which is much more than other reported work. 45 According to the sandpaper abrasion test, the prepared SH coating showed excellent mechanical durability. The fabricated SH coating has robustness against tape peeling.…”

Section: ■ Introductionmentioning

confidence: 98%

“…This proportion accounts for up to 80–90 wt %. ,,, These chemicals are eventually released into the environment and have raised concerns regarding work safety and environmental pollution . Waterborne coatings ,,− and powder coatings , are emerging to fabricate environmentally friendly SH surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Solvent-Free Fabrication of Robust Superhydrophobic Powder Coatings

Huang

Yang

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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Superhydrophobicity originating from the "lotus effect" enables novel applications such as self-cleaning, anti-fouling, anti-icing, anti-corrosion, and oil−water separation. However, their real-world applications are hindered by some main shortcomings, especially the organic solvent problem, complex chemical modification of nanoparticles, and poor mechanical stability of obtained surfaces. Here, we report for the first time the solventfree, chemical modification-free, and mechanically, chemically, and UV robust superhydrophobic powder coatings. The coatings were fabricated by adding commercially available polytetrafluoroethylene (PTFE) particles into powder coatings and by following the regular powder-coating processing route. The formation of such superhydrophobic surfaces was attributed to PTFE particles, which hindered the microscale leveling of powder coatings during curing. Through adjusting the dosage of PTFE, the hydrophobicity of obtained coatings can be tuned in a large range (water contact angle from 92 to 162°). The superhydrophobic coatings exhibited remarkable mechanical robustness against abrasion because of the unique hierarchical micro/nanoscale roughness and low surface energy throughout the coating and the solid lubrication effect of PTFE particles. The coatings also have robustness against chemical corrosion and UV irradiation owing to high bonding energy and chemical inertness of PTFE. Moreover, the coatings show attractive performances including self-cleaning, anti-rain, anti-snow, and anti-icing. With these multifaceted features, such superhydrophobic coatings are promising for outdoor applications. This study also contributes to the preparation of robust superhydrophobic surfaces in an environmentally friendly way.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 98%

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Solvent-Free Fabrication of Robust Superhydrophobic Powder Coatings

Huang

Yang

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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“…It has been confirmed that some biological surfaces (later called superhydrophobic surfaces) such as the lotus leaf, rose petal, rice leaf, water strider, and fly eyes all have common features, that is, rough micro/nano structures and hydrophobic epicuticular waxes. [3][4][5][6] With the continuous discussion of biological superhydrophobic materials, superhydrophobic surfaces have been defined as surfaces with water contact angle (WCA) greater than 150 and water slide angle (WSA) less than 10 . [7,8] According to Young's model, the surface tensions of solid-liquid, vaporliquid, and solid-vapor determine the contact angle of liquids on a flat surface, which is no higher than 120 even under the condition of the lowest surface energy.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemical Fabrication Strategies for Achieving Bioinspired Superhydrophobic Surfaces with Micro and Nanostructures: A Review

Wang

2020

Adv Eng Mater

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Design and preparation of durable anti‐icing polysilazane coatings with abrasion and UV resistance

Kuang

Huang

et al. 2022

J of Applied Polymer Sci

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This work developed a method to enhance the durability of anti‐icing performance of a coating to endure abrasion and UV exposure, through grafting functional polydimethylsiloxane (PDMS) to TiO2 particles and further reacting with polysilazane (PSZ) pre‐polymer. This method remarkably improved the anti‐icing properties of PSZ‐based coatings evaluated by freezing delay time and ice removal shear strength. After either surface abrasion for 50 cycles or UV exposure for 100 h, the modified coatings exhibited ice shear strength increase by only 10.44 and 6.44 kPa respectively, significantly lower comparing to that of the coatings containing 30% TiO2 with no PDMS modification (29.69 and 11.88 kPa, respectively). Such strengthened durability of anti‐icing performance is attributed to the PDMS molecules bridging PSZ rigid segments and TiO2 compositions, which formed a hydrophobic cross‐linking network structure. The durable anti‐icing technique developed herein shall appeal to many outdoor applications of facilities and infrastructures.

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Facile, solvent-free fabrication of a robust 3-dimensional continuous superhydrophobic coating with wettability control and abrasion healing

Cited by 42 publications

References 47 publications

Solvent-Free Fabrication of Robust Superhydrophobic Powder Coatings

Solvent-Free Fabrication of Robust Superhydrophobic Powder Coatings

Chemical Fabrication Strategies for Achieving Bioinspired Superhydrophobic Surfaces with Micro and Nanostructures: A Review

Design and preparation of durable anti‐icing polysilazane coatings with abrasion and UV resistance

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