Dab tsi yog polymer nplaim taws retardants?

Feem ntau cov nplaim hluav taws kub retardants muaj xws li halogen thiab phosphorus nplaim taws retardants.
1. Halogen nplaim retardant:
Halogen nplaim taws retardants tam sim no yog ib qho ntawm feem ntau tsim cov nplaim taws retardants nyob rau hauv lub ntiaj teb no, nrog tsawg ntxiv nqi thiab tseem ceeb nplaim retardant teebmeem. chlorine-muaj nplaim retardants feem ntau muaj xws li chlorinated paraffin, chlorinated polyethylene, thiab lwm yam.; bromine-muaj nplaim retardants tau dav siv vim lawv cov nplaim hluav taws zoo dua qub, maj mam hloov cov tshuaj chlorine-raws li nplaim hluav taws. Cov nplaim retardant mechanism ntawm halogen nplaim retardants yog qhov tseeb, tab sis thaum nws yog nplaim retardant, nws kuj coj ib co teeb meem loj. Nws tso tawm cov pa roj ntau ntau (xws li HCl, HBr, thiab lwm yam). Hydrogen halide roj tau yooj yim nqus dej noo hauv huab cua los ua Hydrohalic acid muaj zog corrosive thiab ua rau cov pa luam yeeb ntau. Cov pa luam yeeb, pa roj carbon monoxide thiab corrosive gases ua rau muaj teeb meem loj rau kev tua hluav taws, khiav thiab rov ua haujlwm.
2. Phosphorus nplaim retardant:
Organophosphorus nplaim retardants muaj xws li phosphates, phosphites, organic ntsev, phosphorus oxides, phosphorus-muaj polyols thiab phosphorus-nitrogen tebchaw, tab sis feem ntau siv lug siv yog halogen-muaj phosphates. Organophosphorus nplaim retardants feem ntau ua lub luag hauj lwm nyob rau hauv lub decomposition theem ntawm polymer cov ntaub ntawv nyob rau hauv thaum ntxov theem ntawm hluav taws. Nws tuaj yeem txhawb nqa lub cev qhuav dej thiab carbonization ntawm cov ntaub ntawv polymer, yog li cov ntaub ntawv polymer tsis tuaj yeem tsim cov pa roj carbon monoxide, thiab vim tias cov phosphorus compounds uas tsis yog-volatile ua coagulants, cov ntaub ntawv carbonized tsim cov yeeb yaj kiab tiv thaiv kom cais tawm sab nraud cua thiab cua sov.
Halogen thiab phosphorus nplaim retardants yog cov zoo heev nyob rau hauv nplaim taws retardancy thiab yog dav siv nyob rau hauv polymers. Txawm li cas los xij, combustion ntawm halogen thiab phosphorus nplaim retardants yuav tso tawm cov pa phem thiab muaj peev xwm carcinogens, uas tsis nyob rau hauv txoj kab nrog niaj hnub no ib puag ncig ntsuab. Nrog rau kev txhim kho kev sib raug zoo ntawm kev tiv thaiv ib puag ncig, ntau tus phooj ywg zoo ib puag ncig cov nplaim hluav taws kub nyhiab thiab cov nplaim hluav taws xob silicon tau maj mam nkag mus rau tib neeg lub zeem muag.