FIELD: chemistry.
SUBSTANCE: invention relates to product, method of product obtaining and product application. Product contains inorganic nanoporous particles, bound to each other by water-dispersible polyurethane, where product includes 75 vol % or more inorganic nanoporous particles counted per the total volume of product and less than 5 vol % of water-dispersible polyurethane counted per the total volume of dry product, and has density 0.14 g/cm3 or lower and heat conductivity 25 mW/(m·K) or lower and is at least 0.5 cm thick. Inorganic nanoporous particles are functionally free from organic components, which have potential reactivity of covalent bonding, and functional coating on particles, and product is functionally free from hollow non-porous particles, layered silicates and clayey minerals; has pore walls, which are sufficiently hydrophobic to eliminate water absorption in the entire porous structure of particles. Product has thickness and sufficient flexibility for bending plane, perpendicular to thickness by at least 90° around the core, which has diameter, equal to product thickness, without macroscopic rupture or destruction. Water-dispersible polyurethane is cross-linked. Method of product obtaining includes dispersion of inorganic nanoporous particles in water dispersion of water-dispersible polyurethane with formation of filled dispersion, pouring filled dispersion into mould and drying with product formation. Method of product application includes placement of product in structure between two areas, which can differ in temperature.
EFFECT: product can be used as heat-insulating material, as well as for soundproofing.
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