Features of the organic-mineral intumescent paints structure formation for wooden constructions fire protection

Abstract

The paper presents the results describing the features of the organic-mineral paints structure formation of the intumescent type for wooden structures fire protection. On the research basis a diagram of the coke formation process has been developed. It is shown that the introduction of titanium oxide and aluminum hydroxide in an amount of 5% promotes the ordering of the foam layer structure, an increase in its thermal stability and the achievement of the highest value of the swelling coefficient – up to 47, which is 1.7 times higher than the values of the swelling coefficient of the base composition. It was found that at 700 °C the formation of refractory compounds of the type TiP2O7, Mg3(PO4)2, AlPO4 occurs, which prevent the burnout of the formed coke foam and increase its strength and heat resistance. On the basis of the main provisions of fuzzy mathematics and data from physicochemical studies, a model of the mechanism of structure and coke formation and control of this process is proposed.