Mechanically robust superhydrophobic polyurethane coating for anti-icing application

Lei, Yanhua; Jiang, Bochen; Liu, Hui; Zhang, Fei; An, Yan; Zhang, Yuliang; Yuan, Yuan; Xu, Jinliang; Li, Xiaofeng; Liu, Tao

doi:10.1016/j.porgcoat.2023.107795

Cited by 6 publications

(4 citation statements)

References 48 publications

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“…By comparison, our spray coating could be formulated from scratch in a one-pot method and sprayed onto a substrate in under an hour. When specifically comparing the surface to superhydrophobic polyurethane surfaces from some of the more recent publications, the surface had a greater x̅ WCA than that of the other reported surfaces. − This was despite being fluorene, vastly reducing the environmental impact of the surface compared to that of the equivalent fluorene-containing compounds in the literature.…”

Section: Resultsmentioning

confidence: 98%

Modification of Commercial Polymer Coatings for Superhydrophobic Applications

Cassidy,

Page,

Reyes

et al. 2024

ACS Omega

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Superhydrophobic surfaces have been studied extensively over the past 25 years. However, many industries interested in the application of hydrophobic properties are yet to find a suitable solution to their needs. This paper looks at the rapid functionalization of nanoparticles and the fabrication of superhydrophobic surfaces with contact angles > 170°. This was achieved by simply mixing commercial products and applying the new formulation with scalable techniques. First, inexpensive and nontoxic superhydrophobic nanoparticles were made by functionalizing nanoparticles with fatty acids in under an hour. A similar methodology was then used to functionalize a commercial polymer coating to express superhydrophobic properties on it by lowering the coating's surface energy. The coating was then applied to a surface by the spray technique to allow for the formation of hierarchical surface structures. By combining the low surface energy with the necessary roughness, the surface was able to express superhydrophobic properties. Both the particles and the surfaces then underwent characterization and functional testing, which, among other things, allowed for clear differentiation between the functionalization properties of the zinc oxide (ZnO) and the silica (SiO 2 ) nanoparticles. This paper shows that suitable superhydrophobic solutions may be found by simple additions to already optimized commercial products.

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Section: Resultsmentioning

confidence: 98%

Modification of Commercial Polymer Coatings for Superhydrophobic Applications

Cassidy,

Page,

Reyes

et al. 2024

ACS Omega

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“…This may be attributed to the inhibition of ice nucleation by EG at the ice/sample interface, preventing droplet freezing from the bottom of the droplet. Figure b compares the icing delay time on different reported anti-icing surfaces with that on the WPUA–PAM@EG-10 surface. ,− At–20 °C, the icing delay time for WPUA–PAM@EG-10 is superior to SHSs and SLIPSs at ≥−20 °C. Even at −30 °C, the icing delay time of 322 s for the WPUA–PAM@EG-10 surface outperforms some anti-icing surfaces at −15 or −20 °C. , …”

Section: Resultsmentioning

confidence: 99%

Multifunctional Anti-Icing Gel Surface with Enhanced Durability

Zhang,

Yan,

Lin

et al. 2024

ACS Appl. Mater. Interfaces

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Materials with low ice adhesion and long-lasting antiicing properties remain an ongoing challenge in ultralow temperature environments (≤−30 °C). This study presents a gel material consisting of a polymer matrix (copolymer of polyurethane and acrylamide) and an anti-icing agent, ethylene glycol (EG), designed for anti-icing applications at ultralow temperatures. The surface shows a prolonged droplet freezing delay of ca. 322 s at −30 °C and frost resistance properties. It also exhibits an ice adhesion strength of 1.1 kPa at −10 °C and 39.8 kPa at −50 °C, resulting from the interaction between EG and water molecules that hinders the crystallization of ice as well as the significant mismatch between elastic gel and ice. In addition, the gel surface exhibits favorable anti-icing durability, with an ice adhesion strength below 20.0 kPa after 25 icing/deicing cycles and mechanical scratch tests. The gel demonstrates remarkable thermal durability, achieved through the H-bonds between the EG and polymer matrix. The H-bonds further enhance the anti-icing performance, thereby remarkably decreasing EG depletion and improving anti-icing durability. Overall, these properties suggest the potential application of this gel material in harsh environments including polar regions.

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“…This enhanced performance is attributed to their exceptional superhydrophobicity, which facilitates the easy rolling away of water droplets from the surface, significantly reducing contact duration and minimizing the likelihood of freezing. Table 5 provides an overview of past research on anti-icing applications [ 168 , 169 , 170 , 171 , 172 ].…”

Section: Applicationsmentioning

confidence: 99%

Nature-Inspired Superhydrophobic Coating Materials: Drawing Inspiration from Nature for Enhanced Functionality

Barthwal,

Uniyal,

Barthwal

2024

Micromachines

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Superhydrophobic surfaces, characterized by exceptional water repellency and self-cleaning properties, have gained significant attention for their diverse applications across industries. This review paper comprehensively explores the theoretical foundations, various fabrication methods, applications, and associated challenges of superhydrophobic surfaces. The theoretical section investigates the underlying principles, focusing on models such as Young’s equation, Wenzel and Cassie–Baxter states, and the dynamics of wetting. Various fabrication methods are explored, ranging from microstructuring and nanostructuring techniques to advanced material coatings, shedding light on the evolution of surface engineering. The extensive applications of superhydrophobic surfaces, spanning from self-cleaning technologies to oil–water separation, are systematically discussed, emphasizing their potential contributions to diverse fields such as healthcare, energy, and environmental protection. Despite their promising attributes, superhydrophobic surfaces also face significant challenges, including durability and scalability issues, environmental concerns, and limitations in achieving multifunctionality, which are discussed in this paper. By providing a comprehensive overview of the current state of superhydrophobic research, this review aims to guide future investigations and inspire innovations in the development and utilization of these fascinating surfaces.

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Mechanically robust superhydrophobic polyurethane coating for anti-icing application

Cited by 6 publications

References 48 publications

Modification of Commercial Polymer Coatings for Superhydrophobic Applications

Modification of Commercial Polymer Coatings for Superhydrophobic Applications

Multifunctional Anti-Icing Gel Surface with Enhanced Durability

Nature-Inspired Superhydrophobic Coating Materials: Drawing Inspiration from Nature for Enhanced Functionality

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