Providing water resistance of surface fire protec- tion of polyester textile materials of various density by treatment with inorganic compositions

Formulations of inorganic phosphorus-halogen-containing fire-retardant compositions and technology of surface treatment of polyester fabric materials of various densities with them, providing a long-term water-resistant fire-protective effect, have been developed. For implementation the chemical interaction between the surface of the polyester material and the fire-retardant system, preliminary activation of the substrate was carried out and a number of modifiers were introduced into the fire-retardant composition. Electron microscopic studies have shown that chemisorption of components of the fire-retardant composition on an activated polyester substrate occurs in the presence of stable colloidal particles with a size of 4–8 nm, formed in the presence of divalent tin compounds. Comparative thermal and analytical studies of fire-protected polyester materials after washing have established the chemisorption interaction of the flame retardants components with polyethylene terephthalate. The concentration limits of the content of inhibitory elements and mediating agent on PET fabric after washing are determined, in which long-term fire protection is achieved by changing the conditions of heat and mass transfer between the material pyrolyzing in the condensed phase and the flame zone. Practical application of research results relates to the introduction of water-resistant fire-resistant materials for protective clothing of firefighters, metallurgists, welders and products made from them in public places through the use of new non-toxic, economical fire-retardant compositions.

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