Thermal transformations of filler components and their influence on the fire resistance of thermally foamed composites

Abstract

Polymer thermofoamed composite materials are used for fire protection of structural el-ements in buildings and constructions. Their main disadvantage is their own flammabil-ity at the stage of formation of foamed thermal insulating structures. Increasing the fire resistance of composites requires a systematic study of the factors responsible for re-ducing their flammability characteristics. To develop ways for the targeted creation of low-flammability foamed composite materials, the influence of thermal properties, composition and ratio of fillers introduced into formulations on the flammability char-acteristics of composites was studied. It has been shown that in order to achieve the re-quired flammability characteristics, it is necessary to ensure a balanced fire-retardant ef-fect of the products of thermal transformations of filler components on processes in the condensed and gas phases: the formation of a mechanically strong insulating foam coke layer and the formation of volatile combustion inhibitors.