FIREPROOF COMPOSITION FOR FLEXIBLE ELEMENTS OF CONSTRUCTIONS Russian patent published in 1997 - IPC

FIELD: protection of flexible elements of construction against fire in aviation, machine building and ship building. SUBSTANCE: fireproof composition comprises, mass pts: fluorine-containing elastomer, 100; pentaerytritol, 10-30; nitrogen-containing compound, 5-15; ammonium polyphosphate, 10-30; chalk, 15-25; magnesium oxide, 3-6; aluminium hydroxide, 10-40. Nitrogen-containing compound is chosen of melamine, urea, phosphate of carbamide. Proposed composition is prepared by adding of ground components into fluorine-containing elastomer, thus prepared mixture is then passed through calender to prepare sheet having thickness 0.5-1.0 mm and then is vulcanized by irradiation. Thus obtained sheet is dubbed with polyethylene film and is cut into band having desired width. By affection of fire proposed composition is foamed while coke is prepared. Said coke has uniform structure and is so strength that it protects flexible elements of construction against fire at vibration and other mechanical actions. EFFECT: improved physical, mechanical and fireproof properties. 1 tbl