Preparation of a superhydrophobic coating based on polysiloxane modified SiO2 and study on its anti-icing performance

Liu, Yang; Zhao, Zhigang; Shao, Yawei; Wang, Yanqiu; Liu, Bin

doi:10.1016/j.surfcoat.2022.128359

Cited by 50 publications

(22 citation statements)

References 43 publications

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“…Ignoring the substrate effect, compared with the result of a reference , the STA@PDA coating delayed the icing time of surface water droplets by 105.9% at a 50% reduction in icing temperature, which indicated that the present coating exhibited an excellent icing delay capability. Similarly, at the same cooling temperature (−15 °C), the cooling rate of water droplets on the as-prepared coating surface was slower than that of a reference from 19 to 2467 s. Additionally, the icing rate of water droplets on the coating surface in refs and was similar, but it was still 92.7% less than the icing delay time of the present coating. This was due to the coupling effect of constructing a super-stable hierarchical structure on the coating surface and reducing its surface energy through the STA’s long-alkyl chain.…”

Section: Resultsmentioning

confidence: 50%

Mussel-Inspired Fabrication of an Environment-Friendly and Self-Adhesive Superhydrophobic Polydopamine Coating with Excellent Mechanical Durability, Anti-Icing and Self-Cleaning Performances

Tian

et al. 2023

ACS Appl. Mater. Interfaces

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Superhydrophobic coatings play a crucial role in self-cleaning and anti-icing infrastructure areas under harsh service environments such as very low temperature, strong wind, and sand impact. In the present study, an environment-friendly and self-adhesive superhydrophobic polydopamine coating inspired by mussels had been successfully developed and its growth process was accurately regulated by formula and reaction ratio optimization. The preparation characteristic and reaction mechanism, surface wetting behavior, multi-angle mechanical stability, anti-icing, and self-cleaning tests were systematically investigated. The results showed that the superhydrophobic coating achieved an ideal static contact angle of 162.7°and a roll-off angle of 5.5°through the proposed self-assembly technique in an ethanol−water solvent. This was due to the coupling effect of constructing a hierarchical roughness structure on the coating surface and reducing its surface energy, which had been well documented by the surface morphology characteristic and chemical structure analysis. The as-prepared coating's self-mechanical performances (tensile strength/shear holding power) and surface wear resistance (sand impact/sandpaper abrasion) behaviors were tested, and results showed tight internal compactness and excellent mechanical robustness, respectively. Furthermore, the 180°tape-peeling on 100 cycles and pull-off adhesion tests indicated that the above coating had significant mechanical stability and an increased percentage (57.4%) of interface bonding strength (27.4 MPa) with steel substrate compared to pure epoxy/steel. This was attributed to the metal chelating capacity between polydopamine catechol moieties and steel. Finally, the superhydrophobic coating had obvious self-cleaning properties by using graphite powder as a contaminant. Additionally, the coating had a higher supercool pressure and displayed much-reduced icing temperature, a longer icing delay time, and an extremely low and stable ice adhesion strength (0.115 MPa) owing to the extreme water-repellence and mechanical durability.

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Section: Resultsmentioning

confidence: 50%

Mussel-Inspired Fabrication of an Environment-Friendly and Self-Adhesive Superhydrophobic Polydopamine Coating with Excellent Mechanical Durability, Anti-Icing and Self-Cleaning Performances

Tian

et al. 2023

ACS Appl. Mater. Interfaces

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“…The spherical SiO 2 particles were modified with 1 wt % fluorosilane ethanol solution to change the particles from hydrophilic to hydrophobic. 32 In the modification process, 5 mL of the fluorosilanol solution was mixed with ∼5 g of silica particles. The mixed solution was then placed in a closed tube.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Preparation of Phase Change Melt Marbles with High Thermal Stability by Spontaneous Shrinkage and Encapsulation

Liu

Zhao

et al. 2022

Langmuir

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Liquid marbles (LMs) are widely used in the fields of microfluids, gas sensitivity equipment, and microreactors. However, the thermal stability of the encapsulated liquid poses difficulty to the hightemperature stability of LMs. In this study, polar phase-change materials (PCMs) with high melting points were used as the encapsulated liquid of LMs. According to the required temperature, suitable PCMs were selected as the core and encapsulated by hydrophobic SiO 2 particles to form melt marbles (MMs). The types of PCMs used to prepare the MMs include erythritol, elemental sulfur, urea, and molten salts. Based on the premixed melting method, a series of MMs with high melting points and thermal stability were successfully developed. The highest acceptable temperature of the MMs exceeded 323 °C, and the evaporation rate of erythritol MMs was less than 1% at 140 °C in 8 h. Thus, the MMs maintained their excellent stability through multiple phase transitions. In the molten state, the MMs exhibited the properties of bounce ability, cuttability, and deformation resistance. The performance of the PCMs in energy storage and release during phase transition demonstrates their potential applications in the field of heat storage.

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“…Currently, anti-icing and de-icing means for interface icing problems mainly include human de-icing, [58][59][60] chemical deicing, [61][62][63] and thermal de-icing. [64][65][66] Manual de-icing consumes a large amount of manpower and is inefficient.…”

Section: Introductionmentioning

confidence: 99%

Advances in superhydrophobic material research: from preparation to electrified railway protection

Bo,

Xueqin,

Bingkun

et al. 2024

RSC Adv.

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Preparation of a superhydrophobic coating based on polysiloxane modified SiO2 and study on its anti-icing performance

Cited by 50 publications

References 43 publications

Mussel-Inspired Fabrication of an Environment-Friendly and Self-Adhesive Superhydrophobic Polydopamine Coating with Excellent Mechanical Durability, Anti-Icing and Self-Cleaning Performances

Mussel-Inspired Fabrication of an Environment-Friendly and Self-Adhesive Superhydrophobic Polydopamine Coating with Excellent Mechanical Durability, Anti-Icing and Self-Cleaning Performances

Preparation of Phase Change Melt Marbles with High Thermal Stability by Spontaneous Shrinkage and Encapsulation

Advances in superhydrophobic material research: from preparation to electrified railway protection

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