Raws li EU REACH txoj cai thiab cov qauv ib puag ncig thoob ntiaj teb nruj dua, cov tuam txhab tsim cov tshuaj pleev xim tiv thaiv hluav taws kub ntsib teeb meem tseem ceeb. Kev txwv rau halogens, cov hlau hnyav thiab PBDEs ua rau cov qauv ib txwm tsis muaj kev muag khoom, thaum qhov kev thov hluav taws kub hauv kev lag luam thiab pej xeem tseem muaj zog. Ammonium polyphosphate (APP) yog ib qho kev daws teeb meem tseem ceeb los sib npaug kev ua raws li kev cai thiab kev ua tau zoo, vim nws cov khoom tsis muaj halogen, ruaj khov.
REACH txwv tsis pub muaj ntau tshaj 2000 yam tshuaj lom, suav nrog cov tshuaj halogenated flame retardants hauv cov txheej txheem ib txwm muaj. PBBs thiab PBDEs raug txwv vim lawv nyob ntev thiab lom, nrog rau cov chaw tsim khoom uas tsis ua raws li txoj cai yuav raug kaw, raug nplua lossis raug tshem tawm hauv kev lag luam.
Tsis tas li ntawd xwb, cov tshuaj halogenated flame retardants tso tawm cov pa phem thaum hlawv thiab tsis sib txuas nrog epoxy/acrylic resins, ua rau delamination thiab txo qhov adhesion - ua rau muaj kev xav tau rau lwm txoj hauv kev ntsuab.
Ua ib qho tshuaj tua hluav taws uas tsis muaj halogen, APP ua tau raws li qhov yuav tsum tau ua ntawm REACH. Nws cov khoom tseem ceeb (NH4)n+2PnO3n+1 tsis muaj cov tshuaj txwv thiab tau sau npe rau REACH. Nrog cov qauv crystalline dawb (melting point 240-280 ℃, decomposition temperature >300 ℃), nws nyob ruaj khov thaum lub sijhawm kho txheej.
APP ua rau hluav taws kub hnyiab los ntawm kev tsim cov pa roj carbon uas ua rau kub hnyiab: qhov kub siab ua rau muaj kev tso tawm ntawm ammonia thiab polyphosphoric acid, ua rau cov substrate carbonization tsim cov txheej oxygen-insulating. Tsis zoo li cov kev xaiv halogenated, nws tsis tsim cov pa roj lom, ua raws li cov qauv ntsuab.
Kev ua kom zoo dua ntawm cov mis tshuaj qhib tau tag nrho lub peev xwm ntawm APP. Rau cov txheej txheej uas muaj dej, APP qib kev lag luam (n≥1000 polymerization degree) ua kom muaj kev yaj thiab kev sib haum xeeb, tiv thaiv kev nag lossis daus. Rau cov txheej txheej uas muaj kuab tshuaj, kev hloov kho tus neeg sawv cev silane coupling ua rau muaj kev sib kis thiab kev nplaum.
APP sib phim zoo nrog melamine thiab pentaerythritol rau lub kaw lus intumescent. Kev sim hauv kev lag luam lees paub tias cov txheej txheej nrog 25-30% APP (feem pua ntawm pawg) ua tau raws li GB / T 8624-2012 B1 qib hluav taws kub thiab qib 1 adhesion, ua tau raws li feem ntau ntawm cov ntawv thov.
Thaum muaj kev hloov kho tshiab rau ib puag ncig, APP tsav kev hloov pauv ntawm kev lag luam txheej tiv thaiv hluav taws. Nws cov yam ntxwv tsis muaj halogen, ua raws li txoj cai thiab ruaj khov daws cov teeb meem REACH thiab txhawb kev nyab xeeb hluav taws - kev paub txog daim ntawv thov APP yog qhov tseem ceeb rau cov tuam txhab tsim khoom los sib tw.
Lub sijhawm tshaj tawm: Plaub Hlis-27-2026
