Robust superhydrophobic surface for anti-icing and cooling performance: Application of fluorine-modified TiO2 and fumed SiO2

Qi, Yanli; Yang, Zhangbin; Huang, Wenxin; Zhang, Jun

doi:10.1016/j.apsusc.2020.148131

Cited by 70 publications

(26 citation statements)

References 47 publications

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“…This result can be explained by using the following expression of IDT Δ t 39 where ρ w is the density of water, C p is the specific heat capacity, T 0 is the initial temperature of the droplet, T 1 is the surface temperature of the test sample, and Δ Q is the net heat loss per unit time. The experimental conditions of ρ w , C p , and T 0 are the same for all test samples.…”

Section: Results and Discussionmentioning

confidence: 99%

Effective Icephobicity of Silicone Oil-Infused Oleamide–Polydimethylsiloxane with Enhanced Lubrication Lifetime

Lee

Park

2022

ACS Omega

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Icing and freezing phenomena in cold weather cause serious damage and economic losses. Thus, the development of a new effective icephobic surface with low ice adhesion strength (τ ice ) that can easily remove ice by wind or gravity force is essentially required. In this study, we propose a silicone oil-infused oleamide–polydimethylsiloxane (SiOP) by a facile fabrication method to achieve the effective icephobic performance with enhanced lubrication lifetime. The proposed SiOP is composed of a composite containing oleamide and polydimethylsiloxane (PDMS) and silicone oil impregnated into the polymeric networks of the composite. Oleamide has been used as a slip agent in industries to reduce the skin friction of polymer films. The weight of the oil impregnated in SiOP is approximately three times higher than that of silicone oil-infused PDMS (SiPDMS). Different from the SiPDMS surface on which oil dries easily, a slippery oil layer is stably formed on the SiOP surface. The fabricated SiOP surfaces have very low τ ice values of approximately 1 kPa, which is much smaller than that of the SiPDMS surface. The SiOP with an oleamide content of 5 wt % exhibits the smallest τ ice value of 0.88 kPa. The fabricated SiOP surfaces maintain their superior icephobicity for more than 30 icing/deicing cycles, demonstrating their enhanced lubrication lifetime. In addition, the ice freezing time of a water droplet of 7 μL in volume is significantly delayed on the SiOP surface compared with that on the SiPDMS surface. The present results demonstrate that the proposed SiOP surface can help provide superior icephobic performance with the aid of the incorporation of oleamide into the conventional SiPDMS. The developed icephobic SiOP can be utilized to satisfactorily resolve the lubricant drought problem of conventional icephobic surfaces by empolying oleamide as a complementary slip agent.

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Section: Results and Discussionmentioning

confidence: 99%

Effective Icephobicity of Silicone Oil-Infused Oleamide–Polydimethylsiloxane with Enhanced Lubrication Lifetime

Lee

Park

2022

ACS Omega

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“…It was shown that superhydrophobic surfaces have an icing-delay ability due to their special structure and properties, which are of great importance for practical applications [ 54 , 55 , 56 ]. The freezing of liquids on superhydrophobic surfaces is a complex process.…”

Section: Resultsmentioning

confidence: 99%

Heat Stability and Icing Delay on Superhydrophobic Coatings in Facile One Step

2022

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Superhydrophobic coatings are limited to poor durability and a tedious preparation process. In this work, an efficient, eco-friendly, and cost-effective sol-gel method is developed for preparing superhydrophobic surfaces using an all-in-one suspension composed of methyltrimethoxysilane (MTMS), nano silicon dioxide (SiO2) particles, and micron zinc oxide (ZnO) particles. Superhydrophobic coatings with a contact angle (CA) up to 153.9° and a sliding angle (SA) of about 3.0° are prepared on Q235 steel substrates using MTMS 5 mL, 0.8 g of nano SiO2, and 0.2 g of micron ZnO. The morphology of the superhydrophobic coating is characterized by scanning electron microscopy (SEM), and the surface is covered with a micro- and nano-scaled hierarchical rough structure. A series of tests are conducted, including long-term stability tests and thermostability tests. The CAs are all above 150°, and the SAs are below 6.3°, indicating the excellent static stability of the prepared superhydrophobic coatings. Moreover, the CA of the superhydrophobic coating remains above 152° after 120 h of UV exposure, and the time for a water droplet to freeze on the surface of the superhydrophobic coating is 18 times of the bare Q235 steel, indicating that the superhydrophobic coating exhibits good resistance to UV radiation and icing-delay properties.

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“…The experimental results proved that the deposition of the superhydrophobic coating increased the freezing time on the copper substrate from 70 s to 500 s. Compared with the uncoated copper substrate, the copper-coated ice structure underwent significant changes. Qi et al 149 used a non-solvent-induced phase separation method to disperse fluorine-modified titanium dioxide and silicon dioxide in a styrene acrylonitrile solution and coated the solution evenly on etched acrylonitrile–styrene–acrylate (ASA). The surface of the resin was cured by heating.…”

Section: Ice-proof and Icephobicity Strategiesmentioning

confidence: 99%

Recent advances in bioinspired superhydrophobic ice-proof surfaces: challenges and prospects

2022

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Robust superhydrophobic surface for anti-icing and cooling performance: Application of fluorine-modified TiO2 and fumed SiO2

Cited by 70 publications

References 47 publications

Effective Icephobicity of Silicone Oil-Infused Oleamide–Polydimethylsiloxane with Enhanced Lubrication Lifetime

Effective Icephobicity of Silicone Oil-Infused Oleamide–Polydimethylsiloxane with Enhanced Lubrication Lifetime

Heat Stability and Icing Delay on Superhydrophobic Coatings in Facile One Step

Recent advances in bioinspired superhydrophobic ice-proof surfaces: challenges and prospects

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