Biomimetic Brushlike Slippery Coatings with Mechanically Robust, Self-Cleaning, and Icephobic Properties

Tian, Yi; Liu, Yibin; Su, Zhengzhou; Wang, Shenqiang; Zhang, Baoliang; Zhang, Hepeng; Zhang, Qiuyu

doi:10.1021/acsami.0c14042

Cited by 47 publications

(39 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with previously reported values for bare Al surfaces (about 200−1600 kPa), 50−57 the ice-adhesion strength of our TMVS-capped PMHS film surface (20 kPa) was extremely small and in good agreement with previously reported values for PDMS-grafted surfaces (about 2.7−38.7 kPa). 28,33,36,37,41 In the scientific community, we recognize that icephobic surfaces usually exhibit the ice-adhesion strength of less than 100 kPa. 58 Although there was some variation in the data, the ice-adhesion strength remained almost unchanged (∼50 kPa) even after 20 cycles of testing.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Effective Approach to Render Stable Dynamic Omniphobicity and Icephobicity to Ultrasmooth Metal Surfaces

et al. 2021

View full text Add to dashboard Cite

Surface modifications for easy removal of liquids and solids from various metal surfaces are much less established than for silicon (Si) or glass substrates. Trimethylsiloxy-terminated polymethylhydrosiloxane (PMHS) is very promising because it can be directly immobilized covalently to a wide variety of metal surfaces by simply heating neat PMHS liquid, resulting in a film showing excellent dynamic omniphobicity. However, such PMHS films are easily degraded by hydrolytic attack in an aqueous environment. In this study, we have successfully improved the hydrolytic stability of the PMHS-covered ultrasmooth metal (Ti, Al, Cr, Ni, and Cu) surfaces by end-capping of the residual Si–H groups of the PMHS films with vinyl-terminated organosilanes, for example, trimethylvinylsilane (TMVS), through a platinum-catalyzed hydrosilylation reaction. The resulting TMVS-capped PMHS film surfaces showed significantly greater stability even after submersion in water for 6 days, with their excellent dynamic dewetting behavior toward water, toluene, n-hexadecane, and ethanol changing little. In addition, they also showed reasonable anti-icing (icephobic) properties with low ice-adhesion strength of less than 50 kPa even after 20 cycles of testing at −15 °C.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 99%

Effective Approach to Render Stable Dynamic Omniphobicity and Icephobicity to Ultrasmooth Metal Surfaces

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Therefore, a novel superhydrophobic composite with icephobicity has good prospects for development. Additionally, Tian et al 20 prepared a series of brush-like thermoplastic polyurethane coating materials and experimentally showed them to have good mechanical, hydrophobic, and icephobic properties. Pan et al 21 reported a novel triple-scale superhydrophobic surface with excellent anti-icing and deicing properties, as demonstrated by experimental results.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Multiwalled Carbon Nanotube/Polydimethylsiloxane Nanocomposites with Temperature-Controlled, Hydrophobic, and Icephobic Properties

Sun

Wang

Sui

et al. 2021

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Retarding and preventing ice/frost formation have increasing importance in aerospace applications because of widespread energy and safety concerns. In this study, multiwalled carbon nanotube−polydimethylsiloxane (MWCNT/PDMS) nanocomposites were fabricated via mechanical stirring and three-roll grinding. By imitating the microstructures of lotus leaves, various biomimetic nanocomposites were prepared by etching micropillar arrays on MWCNT/PDMS nanocomposites. These biomimetic nanocomposites possess superior flexibility, electrical conductivity, hydrophobicity, and icephobicity. Effects of the micropillar height on the wettability, freezing process of water droplets, ice/frost formation, and ice adhesion strength were characterized; influences of temperature on the wettability and strength of ice adhesion and feasibility of electrothermal deicing were investigated. The surface wettability, freezing process of water droplets, ice/frost formation, and ice adhesion strength in the Cassie state are independent of the micropillar height. However, compared to flat surfaces, the adhesion strength of ice increases, and formation of ice/frost decreases because of the presence of surface micropillars. At the same micropillar height, an increase in temperature decreases the contact angle and ice adhesion strength. The results indicate that the surface microstructure designability and flexible temperature-controllability of biomimetic nanocomposites have great potential for use in aerospace (anti-/deicing) applications.

show abstract

“…As a passive method, anti-icing coatings have the advantages of low cost, small energy consumption, and environmental friendliness [2][3][4][5][6]. Because of low surface energy and elasticity, polydimethylsiloxane (PDMS) was widely used to prepare anti-icing coatings [4][5][6][7], and several coating surface modification approaches by PDMS were also applied [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Self-healing anti-icing coatings prepared from PDMS polyurea

Zhao

Peng

Gao

et al. 2021

Sci. China Technol. Sci.

View full text Add to dashboard Cite

With the help of double hydrogen bonds between urea groups, a self-healing anti-icing coating was prepared from polydimethylsiloxane (PDMS)-based polyurea (PDMSPU) that was synthesized from bis(3-aminopropyl)-terminated PDMS and 2,4-toluene diisocyanate. Furthermore, by incorporating a lubricant of inert silicone oil and the cross-linking agent of 1,3,5-tris-(4-aminophenoxy)benzene (TAPOB), the anti-icing coatings exhibited elastic, slippery and durable properties. The wettability, ice shear strength, abrasion-resistance, mechanical and self-healing properties of the prepared anti-icing coatings were systematically investigated. Results showed that the ice shear strength of the PDMSPU anti-icing coating with 150 wt% silicone oil was 7.9±2.9 kPa, significantly lower than that of pristine PDMSPU (74.7±7.2 kPa). The additional introduction of 2 wt% TAPOB could effectively counteract the adverse effect of the lubricant so that the tensile strength (∼1 MPa) of the coating could be comparable to pristine PDMSPU (855±96 kPa). The PDMSPU coating containing 150 wt% silicone oil and 2 wt% TAPOB could maintain the ice shear strength below 50 kPa against 10 icing/deicing cycles and at 12.0±3.3 kPa after 5000 abrasion cycles, and exhibit self-healing properties after treating at 60°C for 10 or 15 h. The slippery self-healing PDMSPU anti-icing coatings could be suitable for anti-icing surfaces in low temperature environments.

show abstract

Biomimetic Brushlike Slippery Coatings with Mechanically Robust, Self-Cleaning, and Icephobic Properties

Cited by 47 publications

References 50 publications

Effective Approach to Render Stable Dynamic Omniphobicity and Icephobicity to Ultrasmooth Metal Surfaces

Effective Approach to Render Stable Dynamic Omniphobicity and Icephobicity to Ultrasmooth Metal Surfaces

Biomimetic Multiwalled Carbon Nanotube/Polydimethylsiloxane Nanocomposites with Temperature-Controlled, Hydrophobic, and Icephobic Properties

Self-healing anti-icing coatings prepared from PDMS polyurea

Contact Info

Product

Resources

About