FIRE-FIGHTING SWELLING MATERIAL FOR PROTECTING OF METAL AND NON-METAL ARTICLES Russian patent published in 2005 - IPC

FIELD: aerospace industry, mechanical engineering, ship building and construction industry.

SUBSTANCE: fire-fighting material has outer fibrous layer and layer, which swells upon emergency heating. According to one embodiment, fibrous layer is made in the form of knitted fabric of stretchable material manufactured from inorganic threads with melting temperature exceeding 1,150°C. According to another embodiment, fibrous layer is made from stretchable textile or knitted material manufactured from complex thread composed of inorganic filament and filament destructed under thermal action of temperature ranging between temperature value exceeding maximal admissible temperature, at which article to be protected is designed to operate, to temperature value of 1,050°C. These threads may be twisted, or readily destructed thread may be arranged along axis of complex thread and stretchable thread may be wound thereon. In both cases, swelling layer is applied to textile material fabricated from glass or basalt threads non-shrinkable at temperature of 450-1,050ºC and applied to article to be protected. Fire-fighting swelling material may be further provided with heat-insulating mat placed onto article to be protected, made from thermally stable glass or basalt filaments and provided with sheathing. Material has insignificant smoke release and may be applied onto flat and flexible articles of small diameter.

EFFECT: increased fire-fighting capacity and reduced fire penetration allowing articles to be effectively protected from emergency fire, and wide range of fields of application.

13 cl, 4 dwg, 2 tbl, 4 ex