Pyrotechnical aerosol-forming fire-extinguishing composite...

A - Human Necessities – 62 – D

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Details

A62D 1/06 (2006.01) C06D 3/00 (2006.01) C06D 5/06 (2006.01)

Patent

CA 2431816

This invention relates to the field of fire-fighting equipment, specifically to means of fire fighting by a fire-extinguishing aerosol that is formed during burning of pyrotechnical composite and a method of its production. The invention allows to prepare pyrotechnical, aerosol-forming fire-extinguishing composite with good deformation strength characteristics, low fire- extinguishing concentration and regulate burning velocity. The pyrotechnical aerosol-forming fire-extinguishing composite contains an oxidizer, a production process additive and burning binder formed by thermoplastic formaldehyde and phenol polycondensate, plasticized by dicarboxylic acid ester and reinforced by polytetrafluoroethylene. The method of producing the composite consists of mixing of formaldehyde and phenol polycondensate suspension in an organic solvent and polytetrafluoroethylene dispersion in dicarboxylic acid ester, mixing the resulting composition with an oxidizer and a production process additive with subsequent thermomechincal effect. The invention can be used for fire-extinguishing in different structures and devices without harmful effect on human body and living organisms, nature.

L'invention relève de l'équipement de lutte anti-incendie et plus précisément d'un système de lutte contre les incendies au moyen d'un aérosol anti-incendie, formé pendant la combustion d'un composite pyrotechnique, ainsi que d'un procédé de fabrication correspondant. L'invention permet de préparer un composite anti-incendie pyrotechnique formant un aérosol, qui présente de bonnes caractéristiques de résistance à la déformation, une faible concentration anti-incendie et une vitesse de combustion réglable. Le composite anti-incendie pyrotechnique formant un aérosol comprend un oxydant, un additif de processus de fabrication et un liant de combustion formé par un formaldéhyde thermoplastique et un polycondensat de phénol, plastifié par un ester d'acide dicarboxylique et renforcé par du polytétrafluoréthylène. Le procédé de fabrication du composite consiste à mélanger le formaldéhyde et la suspension de polycondensat de phénol dans un solvant organique et de polytétrafluoréthylène dans un ester d'acide dicarboxylique, mélanger la composition obtenue avec un oxydant et un additif de processus de fabrication, avec effet thermomécanique correspondant. L'invention peut s'utiliser pour lutter contre le feu dans différentes structures et différents dispositifs; elle n'a aucun effet nocif sur les humains, les organismes vivants et la nature.

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