PHYSICAL AND MECHANICAL PROPERTIES OF TWO-COMPONENT POLYURETHANE PAINT MATERIALS

UDC 667.64

  • Lipatova Elizaveta Andreevna – student. Belarusian State Technological University (13а, Sverdlova str., Minsk, 220006, Republic of Belarus). E-mail: lipatova.200312@gmail.com

  • Dolinskaya Raisa Moiseevna – PhD (Chemistry), Associate Рrofessor, Assistant Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: raisa_dolinskaya@mail.ru

DOI: https://doi.org/10.52065/2520-2669-2021-241-1-182-185

Keywords: polyurethane compositions, paint and varnish materials, curing, polyesters, isocyanates, film-forming agent, hardener.

For citation: Lipatova E. А., Dolinskaya R. М. Physical and mechanical properties of two-component polyurethane paint materials. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 1 (241), pp. 182–185 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2021-241-1-182-185.

Abstract

Polyurethane coatings have three main advantages: high resistance to mechanical stress, chemical resistance, and (in the case of aliphatic polyisocyanates) light resistance and weather resistance.

The practical range of application of such coatings extends both for paper and for protective coatings of equipment in industrial enterprises, so the study of the properties of polyurethane compositions for protecting metals from mechanical influences is quite relevant at the moment.

The purpose of the research work is to study the physical and mechanical properties of two-pack paint and varnish materials, namely: viscosity, tensile strength.

In this paper, the components of the composition are selected, as well as the methods of performing tests. Polyurethane composition consists of PDA 800U polyester resin and Desmodur 44V20L polyisocyanate.

As a result of the conducted research, it is shown that with increasing curing time, the viscosity of the polyurethane coating increases, which makes it harder and more elastic and allows it to withstand heavy loads.

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30.11.2020