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I Bromofluorocarburi (BFC) sono molecole a … I Bromofluorocarburi (BFC) sono molecole a base di carbonio, bromo e fluoro. L'uso più comune è stato nei sistemi anti-incendio. I BFC attaccano lo strato di ozono in maniera ancora più aggressivo dei clorofluorocarburi (CFC), e sono potenti gas serra, sebbene a causa della vita atmosferica più breve non sono dannosi quanto i perfluorocarburi o i clorofluorocarburi equivalenti. Tuttavia, i BFC sono ancora utilizzati su alcune navi e aerei, dato che le alternative non sono altrettanto efficaci. Poiché la produzione di BFC è stata vietata dal protocollo di Montreal le scorte dipendono dai vecchi inventari e dal riciclaggio. I BFC sono estremamente inerti. In un incendio, oltre a escludere fisicamente l'ossigeno, le molecole liberano i radicali di bromo che interferiscono con le reazioni di combustione. I BFC tendono ad avere punti di fusione e di ebollizione più elevati rispetto a molecole comparabili. Un sistema antincendio a BFC nella sala macchine di una nave della marina americanaacchine di una nave della marina americana
, Bromofluorocarbons (BFCs) are molecules ba … Bromofluorocarbons (BFCs) are molecules based on carbon, bromine, and fluorine. The most common use has traditionally been in fire suppression systems. The brand name "Halon" is frequently used interchangeably for BFCs. However, not all Halons are technically BFCs (some contain chlorine also). BFCs attack the ozone layer even more aggressively than chlorofluorocarbons (CFCs), and are powerful greenhouse gases, although due to shorter atmospheric lifetimes not as powerful as equivalent perfluorocarbons or chlorofluorocarbons. Nevertheless, BFCs are still used in some ships and aircraft, because replacements are not as effective. As production of BFCs was banned by the Montreal Protocol, remaining use depends on old inventories and on recycling. BFCs are extremely inert. In a fire, in addition to physically excluding oxygen, the molecules liberate bromine radicals which interfere with combustion reactions. BFCs tend to have higher melting and boiling points than comparable fully fluorinated molecules.an comparable fully fluorinated molecules.
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I Bromofluorocarburi (BFC) sono molecole a … I Bromofluorocarburi (BFC) sono molecole a base di carbonio, bromo e fluoro. L'uso più comune è stato nei sistemi anti-incendio. I BFC attaccano lo strato di ozono in maniera ancora più aggressivo dei clorofluorocarburi (CFC), e sono potenti gas serra, sebbene a causa della vita atmosferica più breve non sono dannosi quanto i perfluorocarburi o i clorofluorocarburi equivalenti. Tuttavia, i BFC sono ancora utilizzati su alcune navi e aerei, dato che le alternative non sono altrettanto efficaci. Poiché la produzione di BFC è stata vietata dal protocollo di Montreal le scorte dipendono dai vecchi inventari e dal riciclaggio.no dai vecchi inventari e dal riciclaggio.
, Bromofluorocarbons (BFCs) are molecules ba … Bromofluorocarbons (BFCs) are molecules based on carbon, bromine, and fluorine. The most common use has traditionally been in fire suppression systems. The brand name "Halon" is frequently used interchangeably for BFCs. However, not all Halons are technically BFCs (some contain chlorine also). BFCs are extremely inert. In a fire, in addition to physically excluding oxygen, the molecules liberate bromine radicals which interfere with combustion reactions. BFCs tend to have higher melting and boiling points than comparable fully fluorinated molecules.an comparable fully fluorinated molecules.
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, Bromofluorocarburi
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