A promising self-assembly PTFE coating for effective large-scale deicing

Yu, Yadong; Chen, Lei; Ding, Wei; Wang, Jiadao; Chen, Chaolang; Mahmood, Awais

doi:10.1016/j.porgcoat.2020.105732

Cited by 21 publications

(24 citation statements)

References 41 publications

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“…Dhyani et al fabricated transparent LIT PDMS and polyvinylchloride (PVC) coatings for photovoltaic applications, simultaneously demonstrating both a low interfacial toughness and ice adhesion strength 48 . Yu et al fabricated robust LIT coatings based on PTFE particle assemblies, where the interfacial toughness was maintained after repeated icing and de-icing cycles 49 . And yet, to-date LIT materials have only been used as passive de-icing coatings.…”

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confidence: 99%

Smart low interfacial toughness coatings for on-demand de-icing without melting

et al. 2022

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Ice accretion causes problems in vital industries and has been addressed over the past decades with either passive or active de-icing systems. This work presents a smart, hybrid (passive and active) de-icing system through the combination of a low interfacial toughness coating, printed circuit board heaters, and an ice-detecting microwave sensor. The coating’s interfacial toughness with ice is found to be temperature dependent and can be modulated using the embedded heaters. Accordingly, de-icing is realized without melting the interface. The synergistic combination of the low interfacial toughness coating and periodic heaters results in a greater de-icing power density than a full-coverage heater system. The hybrid de-icing system also shows durability towards repeated icing/de-icing, mechanical abrasion, outdoor exposure, and chemical contamination. A non-contact planar microwave resonator sensor is additionally designed and implemented to precisely detect the presence or absence of water or ice on the surface while operating beneath the coating, further enhancing the system’s energy efficiency. Scalability of the smart coating is demonstrated using large (up to 1 m) iced interfaces. Overall, the smart hybrid system designed here offers a paradigm shift in de-icing that can efficiently render a surface ice-free without the need for energetically expensive interface melting.

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Smart low interfacial toughness coatings for on-demand de-icing without melting

et al. 2022

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“…Another kind of surface works under the "toughnesscontrolled" regime, which concerns the energy required for interfacial crack propagation. 12,20,21 Performance metrics are the interfacial toughness or the constant shear force when the interface is long enough. Golovin and Mohseni et al analyzed the cracking process of ice−solid interfaces using a cohesive zone material (CZM) model for the first time and confirmed some influencing factors, including thickness, roughness, and interfacial slippage state.…”

Section: Introductionmentioning

confidence: 99%

Effect of Doping SiO₂ Nanoparticles and Phenylmethyl Silicone Oil on the Large-Scale Deicing Property of PDMS Coatings

Chen

Ding

et al. 2022

ACS Appl. Mater. Interfaces

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Recently, low interfacial toughness (LIT) materials have been developed to solve large-scale deicing problems. According to the theory of interfacial fracture, ice detachment is dominated by strength-controlled or toughness-controlled regimes, which are characterized by adhesive strength or constant shear force. Here, a new strategy is introduced to regulate the interfacial toughness of poly(dimethylsiloxane) (PDMS) coatings using silicon dioxide nanoparticles (SiO2 NPs) and phenylmethyl silicone oil (PMSO). By systematically adjusting the doping proportion of SiO2 NPs and PMSO, it is found that a lower interfacial toughness can be achieved with a lower constant shear force. The synergistic effect of the two dopants on the adhesive strength and interfacial toughness is analyzed. Meanwhile, finite element method (FEM) analysis of ice detachment is conducted to show the cracking process intuitively and explicate the mechanism of lowering the interfacial toughness of PDMS by doping SiO2 NPs and PMSO. It can be concluded that the cohesive zone material (CZM) model is effective for simulating the deicing process of PDMS coatings and provides a comprehensive understanding of the modulation of interfacial toughness.

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“…Polytetrafluoroethylene (PTFE) is a perfluorinated organic compound characterized by very stable chemical properties due to its molecular structure, containing carbon (C) and fluorine (F) (-CF 2 -CF 2 -groups) with the extreme strength of both carbon-carbon (backbone group) and carbon-fluorine (pendant group) bonds. The presence of fluorine on the bond ends provides polytetrafluoroethylene with nonpolarity and both low surface energy and a low friction coefficient [24,25]. The low surface energy of the material and the formation of multimodal roughness on the surface sample can be key to the achievement of a stable superhydrophobic state and anti-icing performance, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…There are different studies presented in the literature aimed at a reduction in ice adhesion by modification of different surfaces with PTFE. For example, Wang et al document PTFE application via the electrostatic attraction self-assembly method to reduce ice adhesion to 6061 aluminum alloy [25]. Eshaghi et al fabricated ZnO/PTFE-SiO 2 nano-composite thin films on copper substrates by immersion with a subsequent heat treatment [26].…”

Section: Introductionmentioning

confidence: 99%

Icephobic Performance of Combined Fluorine-Containing Composite Layers on Al-Mg-Mn–Si Alloy Surface

et al. 2021

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This paper presents the results of an evaluation of anti-icing properties of samples obtained by plasma electrolytic oxidation (PEO) with a subsequent application of superdispersed polytetrafluoroethylene (SPTFE) and polyvinylidenefluoride (PVDF). A combined treatment of the samples with SPTFE and PVDF is also presented. It is revealed that impregnation of a PEO layer with fluoropolymer materials leads to a significant increase in surface relief uniformity. Combined PVDF–SPFTE layers with a ratio of PVDF to SPTFE of 1:4 reveal the best electrochemical characteristics, hydrophobicity and icephobic properties among all of the studied samples. It is shown that the decrease in corrosion current density Ic for PVDF–SPFTE coatings is higher by more than five orders of magnitude in comparison with uncoated aluminum alloy. The contact angle for PVDF–SPFTE coatings attain 160.5°, which allows us to classify the coating as superhydrophobic with promising anti-icing performance. A treatment of a PEO layer with PVDF–SPFTE leads to a decrease in ice adhesion strength by 22.1 times compared to an untreated PEO coating.

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A promising self-assembly PTFE coating for effective large-scale deicing

Cited by 21 publications

References 41 publications

Smart low interfacial toughness coatings for on-demand de-icing without melting

Smart low interfacial toughness coatings for on-demand de-icing without melting

Effect of Doping SiO₂ Nanoparticles and Phenylmethyl Silicone Oil on the Large-Scale Deicing Property of PDMS Coatings

Icephobic Performance of Combined Fluorine-Containing Composite Layers on Al-Mg-Mn–Si Alloy Surface

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A promising self-assembly PTFE coating for effective large-scale deicing

Cited by 21 publications

References 41 publications

Smart low interfacial toughness coatings for on-demand de-icing without melting

Smart low interfacial toughness coatings for on-demand de-icing without melting

Effect of Doping SiO2 Nanoparticles and Phenylmethyl Silicone Oil on the Large-Scale Deicing Property of PDMS Coatings

Icephobic Performance of Combined Fluorine-Containing Composite Layers on Al-Mg-Mn–Si Alloy Surface

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Effect of Doping SiO₂ Nanoparticles and Phenylmethyl Silicone Oil on the Large-Scale Deicing Property of PDMS Coatings