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Applications of Polymer, Composite, and Coating Materials
Enhancing mechanical durability of icephobic surfaces by introducing autonomous self-healing function Yizhi Zhuo, Verner Håkonsen, Zhiwei He, Senbo Xiao, Jianying He, and Zhiliang Zhang ACS Appl. Mater. Interfaces, Just Accepted Manuscript • DOI: 10.1021/acsami.8b01866 • Publication Date (Web): 16 Mar 2018 Downloaded from http://pubs.acs.org on March 17, 2018
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ACS Applied Materials & Interfaces
Enhancing mechanical durability of icephobic surfaces by introducing autonomous self-healing function Yizhi Zhuo, Verner Håkonsen, Zhiwei He, Senbo Xiao, Jianying He* and Zhiliang Zhang* NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
Corresponding Author *E-mail:
[email protected];
[email protected] ACS Paragon Plus Environment
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ABSTRACT: Ice accretion presents a severe risk for human safety. Despite great efforts for developing icephobic surfaces (the surface with an ice adhesion strength below 100 kPa) have been devoted, expanding the lifetime of state-of-the-art icephobic surfaces still remains as a critical unsolved issue. Herein, a novel icephobic material is designed by integrating interpenetrating polymer network (IPN) into autonomous self-healing elastomer, and applied in anti-icing for enhancing mechanical durability. The molecular structure, surface morphology, mechanical properties and durable icephobicity of the material were studied. The creep behaviours of the new icephobic material, which were absent in most relevant studies on self-healing materials, were also investigated in this work. Significantly, the material showed great potentials for anti-icing applications with an ultralow ice adhesion strength of 6.0±0.9 kPa, outperforming many other icephobic surfaces. The material also exhibited extraordinary durability, showing a very low longterm ice adhesion strength of ~12.2 kPa after 50 icing/deicing cycles. Most importantly, the material was able to demonstrate self-healing from mechanical damages in a sufficiently short time, which shed light on the longevity of icephobic surface in practical applications.
KEYWORDS: self-healing, ice adhesion strength, creep, anti-icing, icephobicity
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ACS Applied Materials & Interfaces
INTRODUCTION The accumulation of ice and snow has a severe effect on infrastructures and transportations, including airplane, marine structures, wind turbines, power line and many others.1-2 Traditional methods of ice removal, for instances by active heating or using antifreeze fluids were proven to be energy-intensive or can yield unsolvable environmental problems. In the recent years, many researches have been focusing on developing environmental friendly passive icephobic surfaces that can repel the incoming cold water droplets,3-6 delay ice nucleation,7-9 and reduce ice adhesion strength.10-17 Since ice formation on the surface was proven to be inevitable under harsh environment, numbers of studies have been devoted to develop surfaces with low ice adhesion strength (
