Raws li yog paub zoo, lub ntsiab lus ntawm nplaim retardants yog kom tiv thaiv lossis qeeb qhov cuam tshuam ntawm kev sib txuas ntawm lub cev thiab tshuaj lom neeg sib tham. Muaj plaub yam rau PA: tshav kub, cua sov, combustibles, thiab dawb radical tshua tshua.
Ntxiv nplaim retardants yog ib txoj kev tseem ceeb los tshem tawm PA combusction cov xwm txheej tsis hloov PA matrix. Cov nplaim taws txawv retardants muaj cov nplaim taws sib txawv retardant nyhuv. Raws li kev ua tshwj xeeb ntawm kev ua ntawm nplaim retardants, lawv tuaj yeem muab faib ua cov nplaim hluav taws xob roj retardant hom, thiab hom synergistant retardant hom.
1. Cov roj ntsha hais tawm cov txheej txheem retardant
Nplaim taws retardants ua lub luag haujlwm ua lub luag haujlwm lossis cuam tshuam rau kev sib txuas ntawm cov roj sib txuas ntawm cov roj ua ke hauv theem. Muaj ob txoj hauv kev kom ua tiav cov roj-} phase nplaim retardancy:
Ib qho yog tias nplaim retardants seedgan ntxias kom ua dawb radical scavengers, thiaj cuam tshuam rau kev hloov pauv dawb ntawm kev ua haujlwm ntawm kev sib txuas ua ke;
Qhov thib ob yog tias nplaim retardants decomasts raws li cov cua sov, muaj cov pa hluav taws xob ntawm cov pa taws ua ke thiab ua tiav cov nplaim hluav taws xob tsis meej.
2. Kas cov roj ntsha rabe retardant hom
Condensed Theem Hluav Taws Xob Retardant hais txog cov nplaim taws retromprooent tsuas yog kev ua si nplaim hluav taws xob lub luag haujlwm, inhibiting kev sib txuas ntawm cov polymer. Muaj ob txoj hauv kev rau theem yuav ua rau theem
Ib qho yog tias nplaim retardants seedgan thermal decomposition thaum kev sib txuas, yog li nqus tau ntau npaum li cas ntawm cov cua sov tsim thiab tiv thaiv kev sib txuas los ntawm txuas ntxiv;
Qhov thib ob yog tias nplaim retardants paj tau cov tshuaj kub thiab lwm yam) oxide, thiab lwm yam) lossis siab} Cov pa dej siab uas tuaj yeem them nrog cov ntaub ntawv thaum lub sijhawm sib txuas. Qhov saum npoo ntawm cov ntaub ntawv polymer thaiv cov tshuaj thiab lub zog nruab nrab ntawm cov ntaub ntawv polymer thiab lub ntiaj teb sab nraud, muaj kev txhawb nqa txoj kev nce qib.
3. Kev sib koom tes nplaim hluav taws retardant hom
Ib qho ntxiv, qee cov nplaim taws retardants muaj ob qho tib si roj -}}} theem nplaim retardant mechans, ua si lub luag haujlwm ntawm cov nplaim hluav taws xob. Vim yog qhov tseeb uas nplaim retardants ua rau cov tib theem theem thiab coagulation, kev sib txuas ntawm cov polymers yog qhov ntxiv.
Yog li ntawd, nyob rau hauv cov nqe lus ntawm cov teeb meem tshwj xeeb, nplaim taws retardants uas ua si lub ntsej muag ci ntsa iab retardant cuam tshuam, yog li txo tus nqi ntawm pa nplaim taws retardant siv.
