Fabrication of micro-patterned aluminum surfaces for low ice adhesion strength

Jeon, Jaehyeon; Jang, Hanmin; Chang, Junghwan; Lee, Kwan-Soo; Kim, Dong Rip

doi:10.1016/j.apsusc.2018.01.099

Cited by 25 publications

(21 citation statements)

References 37 publications

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“…The ice adhesion strength on the nano-pillar array epoxy surface shows a pronounced downtrend with the height of the nano-pillar increasing, as low as 7.0 kPa. The downtrend illustrated in Figure 10 is in accordance with the previously reported laws [41,45]. It is well accepted that the ice adhesion strength decreases with the increase in the height of the hydrophobic nano-pillar, as illustrated in Figure 9c.…”

Section: Ice Adhesionsupporting

confidence: 89%

Understanding the Solid–Ice Interface Mechanism on the Hydrophobic Nano-Pillar Structure Epoxy Surface for Reducing Ice Adhesion

et al. 2020

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Ice accumulation on wind turbine blades reduces power generation efficiency and increases wind turbines’ maintenance cost, even causing equipment damage and casualties. In this work, in order to achieve passive anti-icing, a series of nano-pillar array structures with different diameters of from 100 to 400 nm and heights of from 400 to 1500 nm were constructed on the substrate bisphenol-A epoxy resin, which is generally used in the manufacturing of wind turbine blades. The as-constructed functional surface showed excellent water repellence, with a contact angle of up to 154.3°. The water repellence on the nano-pillar array structures could induce ultra-low ice adhesion as low as 7.0 kPa, finding their place in the widely recognized scope of icephobic materials. The underlying solid–ice interface mechanism was well revealed in regard to two aspects: the interface non-wetting regime and the stress concentration behavior on the nano-pillar array structured surface. A detailed discussion on both the factors presented here will help surface structure design and function of icephobic materials, especially for epoxy-based composite materials.

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Section: Ice Adhesionsupporting

confidence: 89%

Understanding the Solid–Ice Interface Mechanism on the Hydrophobic Nano-Pillar Structure Epoxy Surface for Reducing Ice Adhesion

et al. 2020

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“…Especially, the ice adhesion strength (6.5 kPa) of the PDMS/SiO 2 based surfaces was still far lower than 20.0 kPa at a low temperature (−25.0 °C) and high humidity (60%) for practical application. The ice adhesion strength of the PDMS/SiO 2 based surface was also compared with that of other surfaces reported in previous works as shown in Figure C. ,− It clearly showed the lowest ice adhesion strength so far among all the reported data. These results confirmed the formation of a superhydrophobic surface with ultralow ice adhesion.…”

Section: Resultsmentioning

confidence: 69%

Ultralow Icing Adhesion of a Superhydrophobic Coating Based on the Synergistic Effect of Soft and Stiff Particles

Cheng

Yang

et al. 2021

Langmuir

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A novel superhydrophobic coating composed of soft polydimethylsiloxane microspheres and stiff SiO 2 nanoparticles was developed and prepared. This superhydrophobic coating showed excellent superhydrophobicity with a large water contact angle of 171.3°and also exhibited good anti-icing performance and ultralow icing adhesion of 1.53 kPa. Furthermore, the superhydrophobic coating displayed good icing/deicing cycle stability, in which the icing adhesion was still less than 10.0 kPa after 25 cycles. This excellent comprehensive performance is attributed to stress-localization between ice and the surface, resulting from the synergistic effect of soft and stiff particles. This work thus opens a new avenue to simultaneously optimize the antiicing and icephobic performance of a superhydrophobic surface for various applications.

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“…An ice adhesion test apparatus was designed and constructed by referring to the literature because there is no commercially available instrument designed to measure ice adhesion strengths. , An overview of the designed instrument is shown in Figure . The entire setup was enclosed in a refrigerator with a polystyrene foam door under controlled internal temperature and relative humidity (RH) of the instrument.…”

Section: Methodsmentioning

confidence: 99%

Nanoscale Coatings Derived from Fluoroalkyl and PDMS Alkoxysilanes on Rough Aluminum Surfaces for Improved Durability and Anti-Icing Properties

Lee

Hwang

et al. 2021

ACS Appl. Nano Mater.

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Anti-icing aluminum (Al) surfaces with excellent durability and low icing adhesion strength were fabricated by forming hierarchical structures on Al surfaces and coating silanes with low surface energy. The Al plates were chemically etched and subsequently immersed in hot water to realize micro–nano hierarchical roughness on the surface. The rough Al plates were coated with a solution containing a mixture of 1H,1H,2H,2H-heptadecafluorodecyl (FD)-trimethoxysilane and poly(dimethylsiloxane) (PDMS)-triethoxysilane, and the wettability and anti-icing properties of the coated surface were compared according to the various ratios of FD and PDMS. The anti-icing surface with 2.9 wt % of the PDMS functional group exhibited a relatively low ice adhesion strength of 25.3 kPa despite a high relative humidity of 75% (at −20.5 °C). In addition, the ice adhesion strength achieved after 100 icing/melting cycles was 47.2 kPa, which indicated excellent durability of the anti-icing properties. This is attributed to the synergistic effect of PDMS and the low surface energy of FD groups, which exhibit chain flexibility, low glass-transition temperature, and repulsion against water molecules.

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Fabrication of micro-patterned aluminum surfaces for low ice adhesion strength

Cited by 25 publications

References 37 publications

Understanding the Solid–Ice Interface Mechanism on the Hydrophobic Nano-Pillar Structure Epoxy Surface for Reducing Ice Adhesion

Understanding the Solid–Ice Interface Mechanism on the Hydrophobic Nano-Pillar Structure Epoxy Surface for Reducing Ice Adhesion

Ultralow Icing Adhesion of a Superhydrophobic Coating Based on the Synergistic Effect of Soft and Stiff Particles

Nanoscale Coatings Derived from Fluoroalkyl and PDMS Alkoxysilanes on Rough Aluminum Surfaces for Improved Durability and Anti-Icing Properties

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