Technical Principles thiab Mechanisms of Action
Cov txheej txheem ntawm kev txiav txim rau cov nplaim hluav taws kub yog feem ntau categorized ua plaub hom:
Gas-theem nplaim hluav taws kub retardancy: nplaim hluav taws retardants decompose nyob rau hauv high kub los tsim inert gases (xws li carbon dioxide los yog nitrogen), uas dilute lub concentration ntawm combustible gases thiab cuam tshuam cov combustion saw cov tshuaj tiv thaiv. Piv txwv li, phosphoric anhydride tsim los ntawm decomposition ntawm phosphorus -raws li nplaim taws retardants tuaj yeem tshem tawm cov dawb radicals koom nrog hauv combustion.
Condensed -theem nplaim hluav taws kub retardancy: Cov nplaim hluav taws kub hnyiab tau tsim cov txheej txheem char ntawm cov khoom siv saum npoo, ua raws li kev thaiv kev tiv thaiv oxygen thiab kub hloov mus. Inorganic nplaim retardants (xws li txhuas hydroxide thiab magnesium hydroxide) txo cov khoom kub los ntawm endothermic decomposition thaum tib lub sij hawm tsim ib txheej tiv thaiv ntawm txhuas oxide los yog magnesium oxide.
Thaum tshav kub kub-pab cuam tshuam: nplaim hluav taws xob txhawb lub melting thiab dripping ntawm cov khoom, yog li nqa tawm cua sov thiab tshem tawm qhov chaw ntawm combustion. Cov txheej txheem no feem ntau pom nrog qis -molecular- hnyav cov nplaim hluav taws kub retardants.
Synergistic nplaim retardancy : Ntau cov nplaim hluav taws kub hnyiab tau siv hauv kev sib xyaw ua ke, leveraging complementary mechanisms los txhim kho tag nrho cov hauj lwm zoo. Piv txwv li, phosphorus-nitrogen synergistic systems tuaj yeem ua haujlwm hauv ob theem roj thiab theem condensed ib txhij.
Daim Ntawv Thov Scenario thiab Kev Lag Luam Xav Tau
Cov nplaim hluav taws kub hnyiab tau siv dav hauv cov haujlwm xws li kev tsim kho, hluav taws xob, tsheb thauj mus los, thiab textiles:
Cov ntaub ntawv tsim kho: Cov nplaim hluav taws kub hnyiab tau muab tso rau hauv hluav taws kub - cov coatings resistant, rwb thaiv tsev boards, thiab cable sheathing kom ua tau raws li cov qauv xws li *Code for Fire Protection Design of Buildings*. Piv txwv li, cov ntaub ntawv thaiv phab ntsa sab nraud rau siab - cov tsev nce siab yuav tsum ua tau raws li Class B1 nplaim hluav taws retardancy tus qauv.
Cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob: Cov khoom siv xws li Circuit Court boards, connectors, thiab yas vaj tse yuav tsum tau nplaim retardants los tiv thaiv hluav taws los ntawm luv luv circuits. EU's RoHS cov lus qhia ua nruj nruj txog cov nplaim taws -cov khoom siv hluav taws xob tsis zoo.