Chemically Resistant, Electric Conductive, and Superhydrophobic Coatings

Saddiqi, Naeem‐ul‐Hasan; Seeger, Stefan

doi:10.1002/admi.201900041

Cited by 14 publications

(8 citation statements)

References 51 publications

(74 reference statements)

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“…We further calculated the CAs and SAs to quantitatively evaluate the wetting state, and this coating exhibited a high CA of 163° and a low SA of 5°. Thus, it is reasonable to deduce that this coating demonstrated stable Cassie-Baxter state where the water droplets were suspended on the surface [ 28 , 29 ].…”

Section: Resultsmentioning

confidence: 99%

A Cost-Effective Method for Preparing Robust and Conductive Superhydrophobic Coatings Based on Asphalt

Wang

Feng

et al. 2020

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The wide application of superhydrophobic materials is mainly hindered by the poor mechanical robustness and complicated preparation method. To overcome these problems, we tried to make a combination of hierarchical and self-similar structure by the means of a simple spraying method. By adding nanofiller (carbon nanotube) and microfiller (graphite powder and expanded graphite), the hierarchical structure was constructed. By further doping the fillers in the commercial asphalt uniformly, the self-similar structure was prepared. Based on the aforementioned work, the as-prepared sample could withstand the sandpaper abrasion for 12.00 m under 4.90 kPa. Moreover, this superhydrophobic coating demonstrated good conductivity, superior self-cleaning property, and excellent corrosion resistance. The integration of conductivity with the superhydrophobicity might open new avenues for ground grid applications.

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Section: Resultsmentioning

confidence: 99%

A Cost-Effective Method for Preparing Robust and Conductive Superhydrophobic Coatings Based on Asphalt

Wang

Feng

et al. 2020

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“…The unannealed PE-SNF film exhibited abrasion susceptibility and lost its superhydrophobicity instantly after abrasion, which is similar to the other superhydrophobic SNF-coated surfaces reported previously. 38,49 For instance, after only two cycles of abrasion, the θ CA was reduced to 145°, and the θ SA was increased to above 90°for PE-SNF without annealing. The mechanical susceptibility of the unannealed PE-SNF film is ascribed to the inherent fragility of SNF.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Solvent-Free Fabrication of Flexible and Robust Superhydrophobic Composite Films with Hierarchical Micro/Nanostructures and Durable Self-Cleaning Functionality

Liu

Zhang

Seeger

2019

ACS Appl. Mater. Interfaces

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Superhydrophobic surfaces hold tremendous potential in a wide range of applications owing to their multifaced functionalities. However, the mechanochemical susceptibility of such materials hinders their widespread usage in practical applications. Here, we present a simple, solvent-free, and environmentally friendly approach to fabricate flexible and robust superhydrophobic composite films with durable self-cleaning functionality. The obtained composite film features unexpected but surprising hierarchical micro/nanoscopic structures as well as robust superhydrophobicity with a water contact angle of similar to 170 degrees and a sliding angle below 4 degrees. Notably, the composite film exhibits mechanical robustness under cyclic abrasion, tape peeling, flexing, intensive finger wiping, and knife cutting; maintains excellent superhydrophobicity after long-time exposure to a high-humidity environment; and sustains exposure to highly corrosive species, such as strong acid/base solutions and organic solvents. The robust superhydrophobicity is ascribed to the induced micro/ nanohierarchical surface structures, resulting in the trapped dual-scale air pockets, which could largely reduce the solid/liquid interface. In addition, even after oil contamination, the composite film water repellency and self-cleaning functionality. The robust superhydrophobic composite film developed here is expected extend the application scope of superhydrophobic materials and should find potential usage in various industries and daily life.

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“…The commonly used conductive fillers are metals, metal oxides, carbon materials and conductive polymers [34]. In particular, due to their excellent thermal conductivity and ability to effectively eliminate accumulated static charges, carbon materials have been utilized to prepare conductive superhydrophobic surfaces [35,36]. Lu et al [37] fabricated robust superhydrophobic surfaces by spraying commercial adhesives between superhydrophobic paint and substrates.…”

Section: Introductionmentioning

confidence: 99%

One-Step Methods to Fabricate Durable Superhydrophobic Coatings for Flexible Electronic Sensors

et al. 2021

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Inspired by lotus leaves in nature, superhydrophobic surfaces have attracted extensive attention in many fields. However, their complex preparation process, poor durability and high cost seriously restrict their large-scale application in industrial production. Based on the good flexibility and durability of carbon nanofibers, several simple modifier-free one-step approaches were adopted to fabricate a durable CNF/PVDF/PDMS conductive superhydrophobic coating. The fabricated coating not only possesses good superhydrophobicity to many kinds of liquids, but also has excellent self-cleaning and anti-fouling properties. In addition, the superhydrophobicity of the obtained multifunctional coating is stable even after harsh bending fatigue deformation, long immersion times and high-temperature treatment. Due to its strong adhesion and excellent conductivity, the CNF/PVDF/PDMS coating displays reliable mechanical stability and superior sensitivity. These distinct features make the obtained conductive superhydrophobic coating a good candidate for multifunctional smart sensors, with great application prospects in gesture detectors, waterproof wearable electronics and health monitors.

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Chemically Resistant, Electric Conductive, and Superhydrophobic Coatings

Abstract: Scheme 1. Activation of substrates to create (-OH) moieties followed synthesis of SNF using trichloroethylsilane (TCES) at room temperature. Dip coating of SNF substrates in CNF suspension to fabricate hybrid CNF surfaces.

Cited by 14 publications

References 51 publications

A Cost-Effective Method for Preparing Robust and Conductive Superhydrophobic Coatings Based on Asphalt

A Cost-Effective Method for Preparing Robust and Conductive Superhydrophobic Coatings Based on Asphalt

Solvent-Free Fabrication of Flexible and Robust Superhydrophobic Composite Films with Hierarchical Micro/Nanostructures and Durable Self-Cleaning Functionality

One-Step Methods to Fabricate Durable Superhydrophobic Coatings for Flexible Electronic Sensors

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