| GUO Le-yang,LI Wen-ge,WU Xin-feng,JIANG Tao,ZHANG Shi-tao,ZHANG Yang-yang.Mechanism and Development Trend of Anti-ice/Deicing Coating[J],51(11):113-125, 163 |
| Mechanism and Development Trend of Anti-ice/Deicing Coating |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.11.010 |
| KeyWord:anti-icing coating deicing coating super-hydrophobic surface phase change material photothermal material |
| Author | Institution |
| GUO Le-yang |
Shanghai Maritime University, Merchant Marine College, Shanghai , China |
| LI Wen-ge |
Shanghai Maritime University, Merchant Marine College, Shanghai , China |
| WU Xin-feng |
Shanghai Maritime University, Merchant Marine College, Shanghai , China |
| JIANG Tao |
Shanghai Maritime University, Merchant Marine College, Shanghai , China |
| ZHANG Shi-tao |
Shanghai Maritime University, Merchant Marine College, Shanghai , China |
| ZHANG Yang-yang |
Shanghai Maritime University, Merchant Marine College, Shanghai , China |
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| Abstract: |
| Facing the loss caused by low temperature disaster and extreme freezing weather, anti-ice/deicing coating is particularly important. Eliminating the ice on the surface has attracted a large number of scholars to research. The mechanism of anti-ice/deicing coating is divided into structural type and physicochemical type. The former is mainly in the form of building micro-nano rough structure on the surface of substrate. The latter is mainly in the form of adding materials that can prevent water droplets from staying on the surface, delay icing or make ice easily fall off through its own physical and chemical properties. Firstly, the microstructure mechanism of structural anti-ice/deicing is summarized according to the proposed time, which mainly including Young equation, Wenzel equation and Cassie-Baxter equation. Then, the main methods of building micro-nano rough structure in the existing literature are reviewed. The surface hydrophobicity can be increased and hysteresis Angle can be reduced by constructing micro-nano rough structure. According to the classical nucleation theory and nucleation free energy barrier formula, the superhydrophobic surface can improve the anti-icing property of coating. The decrease of lag Angle can shorten the retention time of water droplets on the coating surface and prevent the retention into ice. Existing methods can successfully construct micro-nano rough structures on the surface of substrate which meet the requirements of hydrophobicity, but they are limited in practical application. The size of the workpiece and the use environment should be considered to select a convenient, feasible and economical construction method. Secondly, the microscopic mechanism of physicochemical type anti-ice/deicing is also summarized according to the progress of proposed time. Physicochemical anti-ice/deicing materials mainly include low surface energy, photothermal and phase change materials. In most of the study, these two kinds of anti-ice/ deicing mechanisms are often combined to achieve the best effect. Coating is mainly composed of film forming substances, functional fillers, solvents and additives. The main functional fillers of anti-ice coatings are superhydrophobic materials, that is, to construct micro-nano structures or reduce surface energy. The fillers which can reduce the surface energy mainly include fluorine carbon and fluorine silicon materials. In addition, functional fillers include photothermal materials and phase change materials. These fillers can reduce the retention time of water droplets, increase the melting rate of ice after formation and delay the freezing time of ice. Finally, the development trend of anti-ice coating is prospected. At present, there are many researches on anti-ice/deicing surface, and mature products have been put into the market. However, there is no best but better material field. With the progress and improvement of science and technology, scientists need to continuously research and optimize. In the process of future research, the stability, wide applicability and economic practicality of anti-ice/deicing materials should be fully considered. They are not completely independent, but complementary, which can improve the depth and breadth of anti-ice coating application, and actively respond to the market demand. In addition, the performance measurement of anti-ice/deicing coating varies from researcher to researcher, and there is no definite standard for time scale and force size in the test, which is not helpful for researchers to analyze and compare previous experimental data. The development of a unified performance test standard will also better assist the research of anti-ice/deicing coating. |
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