Lub luag haujlwm ntawm nplaim retardants
1, nyhuv endothermic
Qhov tshav kub tso tawm los ntawm ib qho kev sib txuas hauv lub sijhawm luv luv yog txwv. Yog tias ib feem ntawm cov cua sov tso tawm los ntawm qhov hluav taws kub tuaj yeem nqus tau nyob rau lub sijhawm luv luv, cov nplaim taws kub yuav qis dua, tawg mus rau cov nplaim hluavtaws thiab ua rau lub gasification. Thaum tshav kub kub ntawm cov nplaim taws molecules hloov mus rau hauv cov dawb radicals yog txo qis, thiab cov tshuaj tiv thaiv kev sib kis tau raug txwv rau qee yam. Nyob rau hauv qhov kub thiab txias, nplaim taws rov qab yauv tiv thaiv qhov muaj zog endothermic, nqus ib feem ntawm cov tshav kub tso tawm los ntawm kev sib txuas, txo qhov kub ntawm lub npoo ntawm cov khoom tawg, zoo suppresses tsim ntawm cov pa roj, thiab tiv thaiv kev sib kis ntawm kev sib txuas. Cov nplaim retardant mechanism ntawm Al (OH) 3 nplaim taws retardant yog kom muaj peev xwm ua kom sov ntawm cov polymer kom nqus tau cov cua sov ntau dua ua ntej ncav mus rau thermal decomposition kub, yog li txhim kho nws cov nplaim retardant kev ua tau zoo. Xws li nplaim taws rov zoo siab siv lawv cov yam ntxwv ntawm nqus cua sov thaum sib xyaw nrog cov dej nqus, thiab txhim kho lawv tus kheej nplaim hluav taws retardant muaj peev xwm.
2, kev pab them nqi
Tom qab cov nplaim hluav taws rov ntxiv rau cov khoom sib txuas, cov nplaim taws rov qab tuaj yeem tsim cov iav zoo li qub los yog ruaj khov ua npuas txheej txheej ntawm qhov kub siab kom cais tawm cov pa oxygen, thiab muaj cov haujlwm ntawm cov cua kub rwb thaiv tsev, oxygen oxygen, thiab tiv thaiv cov roj sib kis kom dim. tawm sab nraud, yog li ua tiav cov nplaim retardant. lub hom phiaj. Piv txwv li, organophosphorus nplaim taws rov qab tuaj yeem tsim cov khoom lag luam sib txuas lossis cov txheej txheem carbonized uas ruaj khov dua hauv cov qauv thaum rhaub. Kev tsim cov roj carbonized txheej ntawm ib sab tes tiv thaiv cov polymer los ntawm kev txuas ntxiv pyrolysis, thiab ntawm qhov tod tes tiv thaiv cov khoom lag luam sab hauv los ntawm kev nkag mus rau hauv cov pa theem kom koom nrog cov txheej txheem sib txuas.
3. Kev txwv cov saw hlau tiv thaiv
Raws li cov saw kev sib txuas ntawm txoj kev xav, nws yog dawb radicals yuav tsum tau ceev cia cov khoom sib txuas ua ke. Cov nplaim hluavtaws ua haujlwm ntawm cov pa roj theem sib txuas thaj tsam kom ntes cov dawb nyob rau hauv cov tshuaj tiv thaiv kev sib txuas, thiaj li tiv thaiv cov nplaim hluav taws xob tawm, txo cov nplaim hluav taws kub hauv thaj chaw txuas ntxiv, thiab thaum kawg txo cov kev sib txuas ntawm cov pa tshuaj tiv thaiv kom txog thaum txiav. Piv txwv li, cov nplaim hluav taws kub halogen uas muaj cov nplaim hluav taws kub uas nws cov evaporation kub thiab polymer ua kom kub yog qhov qub lossis zoo sib xws, thaum cov polymer ua kom kub tsis zoo, cov nplaim hluav taws kuj poob. Lub sijhawm no, cov hluav taws kub halogen uas muaj cov nplaim hluav taws thiab cov khoom ua kom cov cua sov ua kom tawg tau ib txhij nyob rau hauv cov pa roj ntu zuaj theem, thiab cov halogen tuaj yeem ntes cov dawb radicals hauv cov tshuaj tiv thaiv kev sib txuas thiab cuam tshuam nrog kev sib txuas ntawm cov khoom sib txuas.
4, uas tsis yog-combustible gas suffocation
Thaum nplaim taws rov zoo li qub, cov roj hauv cov hluav taws uas tsis sib txuas yog decomposed, thiab cov pa taws ntawm cov roj sib txuas uas ua rau cov khoom sib txuas tau yog diluted rau hauv qab qhov qis tshaj ntawm kev sib txuas. Nyob rau tib lub sijhawm, nws tseem muaj cov kev hloov kho ntawm cov pa oxygen hauv qhov chaw txuas ntxiv, tiv thaiv kev sib txuas los ntawm kev ua thiab ua tiav cov nplaim taws rov ua kom tau zoo.