Preparation and Characterization of Superhydrophobic Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 1790

Special Issue Editors


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Guest Editor
Department of Electrical and Electronic Engineering, School of Engineering, University of Manchester, Manchester, UK
Interests: superhydrophobic and anti-icing surface treatments and coatings for power systems equipment; partial discharge in power cables in low pressure environments; condition monitoring of power cables in aerospace applications

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Guest Editor
Polymer and Composite Technologies Group, TWI Ltd, Cambridge, Cambridge, UK
Interests: highly repellent coating technologies for industrial applications including: anti-soiling surfaces for renewable energy generation (solar PV and wind turbine); anti-icing and ice-repellent coatings for aerospace; fluorine-free release coatings for polymer and composite manufacture

Special Issue Information

Dear Colleagues,

The reliable generation and delivery of electrical power are of critical importance as we move to a society based on net-zero carbon emissions. Power systems equipment are often situated in locations that are open to the environment and performance must be maintained during rain, snow, and icing conditions as well as the risk of contamination by dust in industrial areas. Superhydrophobic and highly repellent coatings offer opportunities to protect equipment through the reduced build-up of surface contamination such as ice accumulation, but may also enable other benefits such as reducing the levels of acoustic noise emitted by overhead lines during rain. These coatings are exposed to harsh operating conditions and so durability is a key requirement. Due to the emerging importance of superhydrophobic coatings for power systems, we invite submissions of articles for this Special Issue on the topic. Articles may be submitted on the following:

  • Suggested application areas:
    • Solar cells: Maintaining the power generation capability of solar cells through anti-soiling;
    • Overhead lines: Prevention of icing on conductors, insulators, and/or support structures. Coatings for water shedding to reduce acoustic noise generation from overhead line conductors. Prevention of flashover of insulators;
    • Wind turbines: Prevention of icing.
  • New coating formulations or re-purposing of existing formulations for new applications / harsher environmental conditions.
  • Durability of coatings in conditions including but not limited to thermal ageing, thermal cycling, outdoor weather conditions (rain, snow, ice, temperature changes), humidity cycles, chemical (such as ozone) / particulate pollution, mechanical stresses (both static and cyclic), UV/other radiation ageing, and electric fields including ageing due to corona/partial discharge. Measuring the impact of ageing on the loss of repellency due to topographic modification or chemical degradation.
  • Assessment of functional performance under accelerated ageing.
  • Manufacturing and manufacturability of coatings for large scale application and widespread adoption; opportunities to ‘retro-fit’ / apply coatings to existing equipment.
  • Structure-property considerations particularly relating to the longevity of functional performance
  • Achievement of high levels of repellence using fluorine-free coatings.
  • Life-cycle and recyclability of coatings.
  • Characterisation is also encouraged of other material properties including but not limited to electrical, thermal, mechanical, and microstructural properties
  • Insights into the measurement of repellency and abhesion of surface contamination

Dr. Robert Lowndes
Dr. Alan Taylor
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • superhydrophobic coatings
  • self-cleaning
  • anti-icing
  • power systems plant
  • net-zero
  • durability
  • overhead lines
  • wind turbines
  • solar cells
  • easy release
  • anti-soiling
  • abhesion
  • omniphobic surfaces
  • oleophobic coatings
  • surface energy
  • dirt pick-up resistance
  • fluorine-free
  • topography

Published Papers (1 paper)

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Research

18 pages, 7270 KiB  
Article
Effects of Different Degrees of Hydrophobic Treatment on Soil–Water Characteristic Curves and Infiltration Coefficients of Hygroscopic Soils
by Xiaolong Li, Haiqing Zhou, Botong Chen, Xiao Song, Ziqiang Liu, Jian Zhao, Guohong Yin, Yuling Li, Yuncui Zong, Qiushi Li and Chunpeng Han
Coatings 2022, 12(10), 1424; https://doi.org/10.3390/coatings12101424 - 28 Sep 2022
Cited by 3 | Viewed by 1299
Abstract
Soil treated with silicone hydrophobic material for a long time can effectively improve the saturated permeability of the ground, which has been confirmed. However, the long time will increase the cost in engineering construction. Secondly, the mechanism of alteration of soil–water properties by [...] Read more.
Soil treated with silicone hydrophobic material for a long time can effectively improve the saturated permeability of the ground, which has been confirmed. However, the long time will increase the cost in engineering construction. Secondly, the mechanism of alteration of soil–water properties by silicone hydrophobic materials is not understood. This lack of understanding is not conducive to the engineering application of silicone hydrophobic materials. Therefore, variable-head permeability and matrix suction tests under 15 different test conditions were conducted with different hydrophobic material dosage and action time as variables in this paper. The soil–water characteristic curve (SWCC) was plotted according to the test results, the unsaturated permeability coefficient was calculated, and curve fitting was performed. It can be seen from the test data that, with the increase in the dosage of hydrophobic materials and the action time, the permeability coefficient and the air-entry value showed a downward trend. Nevertheless, as the reaction proceeded, a mutation occurred at 4 h. When the minimum dosage and action time were used, the soil’s permeability coefficient and air-entry value decreased by 80.65% and 71.09%. The test results show that, even when the action time was 2 h, the hydrophobic material could maintain the permeability of the soil and reduce its air-entry value; thus, the hydrophobic material could effectively reduce the rise of capillary water in the soil and protect the roadbed. Full article
(This article belongs to the Special Issue Preparation and Characterization of Superhydrophobic Coatings)
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