Superior droplet bouncing, anti-icing/anti-frosting and self-cleaning performance of an outstanding superhydrophobic PTFE coating

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL Cold Regions Science and Technology Pub Date : 2024-05-28 DOI:10.1016/j.coldregions.2024.104229

Xin Wang, Bing-Bing Wang, Bo Deng, Zhi-Ming Xu

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Abstract

The prevention of ice/frosting formation is crucial in cold region for various applications. Superhydrophobic coatings are known for their excellent anti-icing/anti-frosting properties. In this study, a durable superhydrophobic PTFE coating on a stainless steel surface was fabricated with a high water contact angle of 171.4° and a low rolling angle of 1.1°. The freezing of water droplets on the coating exhibits a significantly prolonged duration of 809 s at −10 °C, representing a 25-fold increase compared to the uncoated stainless steel surface. The ice adhesion strength is reduced by 83.7%, making ice easier to remove. Anti-frosting tests show that a thinner and lower-density layer of frost formed on the PTFE coating due to its micro-nano hierarchical structure. Furthermore, the superhydrophobic PTFE coating demonstrates excellent mechanical stability, droplet bouncing dynamics and self-cleaning properties. It is anticipated that this durable superhydrophobic PTFE coating will be a candidate for anti-icing/anti-frosting and self-cleaning applications

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卓越的超疏水聚四氟乙烯涂层具有出色的液滴反弹、防结冰/防结霜和自清洁性能

在寒冷地区的各种应用中，防止结冰/结霜是至关重要的。超疏水涂层以其出色的防结冰/防结霜性能而闻名。在这项研究中，在不锈钢表面制作了一种耐用的超疏水聚四氟乙烯涂层，其水接触角高达 171.4°，滚动角低至 1.1°。涂层上的水滴在零下 10 °C时的冻结时间明显延长，达到 809 秒，与未涂层的不锈钢表面相比增加了 25 倍。冰的附着强度降低了 83.7%，使冰更容易清除。防结霜测试表明，由于聚四氟乙烯涂层具有微纳分层结构，因此在涂层上形成的霜层更薄、密度更低。此外，超疏水聚四氟乙烯涂层还具有出色的机械稳定性、液滴弹跳动力学和自清洁性能。预计这种耐用的超疏水聚四氟乙烯涂层将成为防结冰/防结霜和自清洁应用的候选材料。

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.