АНАЛІЗ ВПЛИВУ ВХІДНИХ КОМПОНЕНТІВ НА ТЕПЛОФІЗИЧНІ ВЛАСТИВОСТІ ПОКРИТТЯ ПРИ ВОГНЕВОМУ ВПЛИВІ

Abstract

Purpose. Development of fire protection composition and study of its properties: definition of fire protection group of the proposed coating. Methodology. In the course of the research, an analytical review of the main groups of fire retardants, which increase the fire resistance of wooden construction constructions, gave an assessment of their technical characteristics, as well as in accordance with DSTU B V.1.1-4-98 "Fire protection. Building constructions. Test methods for fire resistance. General requirements "defines the fire-protective properties of the developed fire protection coating. Findings. The authors developed a composition of flame retardant coating that forms on the surface, which "protects" a thin non-transparent layer that prevents inflammation and spread of flame on a wooden structure. The selection of composition of fire protection composition was carried out according to the scheme "compound - the additive that is flowing -the filler". The basis of the coating is liquid glass, because it has such positive characteristics as accessibility, due to the manifestation of liquid glass adhesive properties - the ability to spontaneous hardening with the formation of artificial silica. An increase in the content of fillers can increase the use interval of the composition to 900-9200С, and the maximum temperature at which provides the swelling of the coating 540-6800С. According to studies, the highest fire-retardant coating efficiency is achieved with content in the composition of asbestos-cement waste from 15.0 to 22.5%, aluminum-calcium slag from 7.5 to 10.0%. An increase in the content of fillers and technical drill for a rational area reduces the heat-shielding ability of the coating and reduces the fire-retardant effectiveness of the coating. Adding to the flame retardant composition sulfite-alcoholic membrane greatly improves the adhesion of the coating from the protected surface, which also affects the fire-protective ability of the coating, it grows to 76.0-81.0 minutes. Originality. Taking into account the theoretical preconditions, the choice of output components for a new fire protection composition has been carried out. Practical value. A new nonflammable spillway structure is developed, which allows the transfer of combustible materials into a group of heavier and increase fire resistance of building structures. On the developed fireproof composition the Ukrainian patent for utility model was obtained.