FLEXIBLE LAYERED COMPOSITE MATERIAL WITH HIGH ABLATION RESISTANCE Russian patent published in 2021 - IPC C08J5/04 C08J5/10 D06M15/41 D06M15/643 

FIELD: polymer materials.

SUBSTANCE: invention relates to polymer composite materials usable for manufacturing thin-walled heat-protective elements of parts and assemblies of aerospace equipment, as well as in manufacture of flexible pipelines. A flexible layered composite material with high ablation resistance is proposed, consisting of a reinforcing carbon or silica fibrous filler and an elastomeric matrix with a high content of silicone and phenol-formaldehyde resin, characterised by the fact that the content of the elastomeric matrix in the material is 60 to 80 wt%., wherein the matrix constitutes a mixture of organosilicon elastomer, phenol-formaldehyde resin in the form of a powder with modifying additives both separately and in combinations, constituting powders of sodium tetraborate, carbides, nitrides, metal borides or mixtures thereof, glass microspheres, potassium fluoride. The content of the phenol-formaldehyde resin in the form of a powder is 20 to 75 wt.% of the weight of the organosilicon elastomer. The total content of the modifying additives is 1 to 10% of the weight of the elastomeric mixture.

EFFECT: producing a flexible layered composite material with a two-dimensional reinforcement pattern, capable of maintaining short-term performance capacity at high (up to 1,700 K and greater) temperatures, including in oxidising media.

9 cl, 3 dwg, 1 tbl, 17 ex