AEROSOL-FORMING FIRE EXTINGUISHING COMPOSITION AND METHOD FOR PREPARATION THEREOF
FIELD: fire safety; chemistry.SUBSTANCE: invention relates to aerosol-forming volumetric fire extinguishing compositions and methods for their preparation. Composition comprises an alkali metal nitrate as an oxidising agent, a novolak type phenol-formaldehyde resin and an epoxy resin as a combustibl...
Gespeichert in:
Hauptverfasser: | , |
---|---|
Format: | Patent |
Sprache: | eng ; rus |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | FIELD: fire safety; chemistry.SUBSTANCE: invention relates to aerosol-forming volumetric fire extinguishing compositions and methods for their preparation. Composition comprises an alkali metal nitrate as an oxidising agent, a novolak type phenol-formaldehyde resin and an epoxy resin as a combustible binder, at least one salt of an alkali metal and a carboxylic acid as additional fuel, simultaneously serving as a coolant, and as the combustion modifier, cobalt (II) nitrate with promoting additives of aluminium oxide and copper oxide at the following component ratio, wt%: combustible binder - 6-11, additional fuel-coolant - 4-15, cobalt nitrate - 2-5, aluminium oxide - 1-3, copper oxide - 1-3, oxidiser - the balance. Composition is prepared by mixing the oxidising agent and the additional fuel-coolant to form a 1st mixture, separately mixing the cobalt nitrate with aluminium oxide to obtain a 2nd mixture, also separately preparing the epoxy resin by adding a solvent therein and mixing with the hardener to obtain a 3rd mixture, having a viscosity providing wettability of the dry components, then mixing the 1st and 2nd mixtures, whereupon the 3rd mixture is added, the resulting mixture is mixed with the phenol-formaldehyde resin and concurrently with the copper oxide and dried at a temperature providing polymerisation of the epoxy resin and removal of the solvent.EFFECT: technical result of the invention is the reduction of toxic substances in the combustion products of the aerosol-forming composition for fire extinguishing, not only in the combustion zone of the composition, but also beyond the nozzle section of the extinguishing aerosol generator for fire extinguishing.14 cl, 1 tbl, 7 ex
Изобретение относится к аэрозольобразующим составам объемного пожаротушения и способам их получения. Состав содержит нитрат щелочного металла в качестве окислителя, фенолформальдегидную смолу новолачного типа и эпоксидную смолу в качестве горючего-связующего, по меньшей мере одну соль щелочного металла и карбоновой кислоты в качестве дополнительного горючего, выполняющего одновременно функцию охладителя, и в качестве модификатора горения - нитрат кобальта(II) с промотирующими добавками оксида алюминия и оксида меди при следующем соотношении компонентов, мас.%: горючее-связующее - 6-11, дополнительное горючее-охладитель - 4-15, нитрат кобальта - 2-5, оксид алюминия - 1-3, оксид меди - 1-3, окислитель - остальное. Состав получают, смешивая окислитель и дополнительное горючее- |
---|