{"id":55142,"date":"2026-02-14T17:56:05","date_gmt":"2026-02-14T17:56:05","guid":{"rendered":"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating"},"modified":"2026-02-14T18:13:40","modified_gmt":"2026-02-14T18:13:40","slug":"scientists-create-highly-efficient-water-repellent-coating","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating","title":{"rendered":"Scientists Create Highly Efficient Water Repellent Coating"},"content":{"rendered":"

Africa-Press – Sierra-Leone. <\/strong><\/span>Researchers from Volgograd State Technical University (VolgSTU) have claimed that the coatings developed by a scientific team at VolgSTU could increase protection against corrosion and icing, as well as ensure a self-cleaning effect on the materials surfaces.<\/p>\n

Many structural materials and alloys are susceptible to corrosion in an environment of high humidity, or biofouling or icing under \u201cfreezing rain\u201d conditions. Dust also settles on surfaces of equipment such as telecommunications antennas or power transformers. Regular cleaning leads to additional costs, but without it the devices\u2019 efficiency decreases, the university scientists noted.<\/p>\n

At the same time, existing coatings do not provide complete protection against corrosion or icing, or can be effective for a limited number of materials, the VolgSTU specified.<\/p>\n

The VolgSTU researchers have developed water-repellent properties and the self-cleaning ability for materials surfaces because of the properties of copolymers (polymers consisting of two or more monomeric units).<\/p>\n

\u201cCoatings based on our copolymers can provide superhydrophobic properties and self-cleaning of the surface. That is, a drop of water ideally does not spread over the surface at all, but keeps its spherical shape until it evaporates or rolls off the object,\u201d Victor Klimov, associate professor at the Department of Technology of High-Molecular Compounds and Fibrous Materials, said.<\/p>\n

There is such a thing as the contact angle or \u201cwetting angle\u201d. Its value is used by specialists to determine how the water droplet will behave when interacting with a solid material, the scientist continued.<\/p>\n

The smaller the angle, the more the water drop spreads over the surface and wets a larger area. Consequently, these surfaces corrode faster. If the wetting angle is greater than 90 degrees, the water droplets spread out less and moisten a smaller area, consequently slowing down corrosion.<\/p>\n

Maximum water-repellent (superhydrophobic) surfaces have a wetting angle of 150 degrees, and some polymer coatings developed by university scientists are characterized by contact angles up to 170 degrees, the researcher said.<\/p>\n

\u201cTo achieve super-hydrophobic properties is almost impossible without the proper microstructure of the material. If you apply copolymers on a smooth surface \u2013 the values will be about 110 degrees, but if you first create the necessary roughness on it, the wetting angle will reach 150 degrees and higher. We are working on compositions that, when applied, can achieve such properties,\u201d Klimov added.<\/p>\n

The developed coatings also provide a low rolling angle, which means that water droplets quickly slide off the surface of the material with an inclination to the horizon line of only 2 to 3 degrees. This property allows such coated surfaces to be described as self-cleaning, the researcher added.<\/p>\n

The scientists have created protective polymer coatings based on copolymers of glycidyl methacrylate and fluoroalkyl methacrylates. The results of their study were published in the Polymers journal.<\/p>\n

The research is part of a VolgSTU strategic project within the framework of the \u201cPriority 2030\u201d program.<\/p>\n

The university development program includes four strategic projects, including the \u2018Center for Digital Scientific and Educational Projects and Developments\u2019 and \u2018Technologies for Industrial Innovation Cluster\u2019.<\/p>\n

For More News And Analysis About Sierra-Leone<\/span> Follow Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Sierra-Leone. Researchers from Volgograd State Technical University (VolgSTU) have claimed that the coatings developed by a scientific team at VolgSTU could increase protection against corrosion and icing, as well as ensure a self-cleaning effect on the materials surfaces. Many structural materials and alloys are susceptible to corrosion in an environment of high humidity, […]<\/p>\n","protected":false},"author":84,"featured_media":55141,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,9],"tags":[292],"class_list":["post-55142","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-news","category-miscellaneous","tag-sierra-leone"],"yoast_head":"\nScientists Create Highly Efficient Water Repellent Coating - Sierra Leone<\/title>\n<meta name=\"description\" content=\"Researchers from Volgograd State Technical University (VolgSTU) have claimed that the coatings developed by a scientific ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scientists Create Highly Efficient Water Repellent Coating\" \/>\n<meta property=\"og:description\" content=\"Researchers from Volgograd State Technical University (VolgSTU) have claimed that the coatings developed by a scientific ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating\" \/>\n<meta property=\"og:site_name\" content=\"Sierra Leone\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AfricaPressTunisiaa\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-14T17:56:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-14T18:13:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/sierra-leone\/sites\/16\/2026\/02\/sm_1771079824.426608.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditoren\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditoren\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating\"},\"author\":{\"name\":\"cfeditoren\",\"@id\":\"https:\/\/www.africa-press.net\/sierra-leone\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb\"},\"headline\":\"Scientists Create Highly Efficient Water Repellent Coating\",\"datePublished\":\"2026-02-14T17:56:05+00:00\",\"dateModified\":\"2026-02-14T18:13:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating\"},\"wordCount\":509,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/sierra-leone\/sites\/16\/2026\/02\/sm_1771079824.426608.jpg\",\"keywords\":[\"Sierra-Leone\"],\"articleSection\":[\"all news\",\"miscellaneous\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating\",\"url\":\"https:\/\/www.africa-press.net\/sierra-leone\/all-news\/scientists-create-highly-efficient-water-repellent-coating\",\"name\":\"Scientists Create Highly Efficient Water Repellent Coating - 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