Название |
Development and application of a complex polymer
coating to ensure high corrosion resistance of the outer surface of steel
pipes of urban heating networks
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Информация об авторе |
Empress Catherine II Saint Petersburg Mining University (St. Petersburg, Russia)
E. I. Pryakhin, Dr. Eng., Prof., Head of the Dept. of Materials Science and Technology of Art Products, e-mail: e.p.mazernbc@yandex.ru D. A. Pribytkova, Postgraduate Student, Dept. of Materials Science and Technology of Art Products, e-mail: pribytda@gmail.com |
Реферат |
Various approaches and materials are used in the development of corrosion-resistant coatings. Polymer-based coatings have already proven their durability and ease of use and are promising materials for the development of corrosion-resistant protection. In comparison with metallized coatings, they are not subjected to constant destruction, and, unlike ceramic coatings, have sufficient plasticity to withstand mechanical loads and impact during transportation and installation. This paper presents the results of a study on the development of a corrosion-resistant polymer coating based on epoxy and polyurethane enamels, proposed for protecting the outer surface of a hot water supply pipeline with non-insulated insulation during channel-free laying. Polyurethane and epoxy enamels have their pros and cons. The idea of the work is to use a combined two-layer coating of polyurethane and epoxy enamel for corrosion protection in order to combine the positive properties of these polymers in a single complex. The effectiveness of protecting the pipe surface from corrosion damage using a combined coating is reduced by poor adhesion of the coating material to the steel pipeline surface. For better adhesion to the metal, the pipe surface was pre-treated using a laser unit to obtain a developed relief and a preset roughness. Laser treatment is offered as an alternative to surface preparation instead of sandblasting.
The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (FSRW-2023-0002 “Fundamental interdisciplinary researches of the Earth bowels and the processes of complex development of geological resources). |
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