Nws yog yeej nyob rau hauv txoj kab nrog rau lub teb chaws Melamine Dinnerware txheem tableware, koj yuav tau so assured uas melamine thiab formaldehyde cov tshuaj tiv thaiv yuav tsim melamine khoom, cov tshuaj tiv thaiv irreversible cov tshuaj tiv thaiv, yuav tsis tau ib zaug dua los melamine los yog formaldehyde, tab sis nyob rau hauv no cov tshuaj tiv thaiv, formaldehyde yog ntau ( cov tshuaj tiv thaiv kev mob yuav tsum tau), uas ua nyob rau hauv cov tshuaj tiv thaiv tom qab qhov kawg ntawm ib tug me me npaum li cas ntawm free formaldehyde nyob rau hauv cov khoom, tab sis nyob rau hauv lub qab-up txheej txheem ntawm cov zauv ib co free formaldehyde yuav tso tawm ib feem, muaj tseem yog ib feem ntawm lub hav zoov ntawm cov khoom, lub xeem tsim nyog (free formaldehyde tsiv teb tsaws tsawg tshaj li 15 ㎎ / ㎏, lub EU standard), koj ua tau raws li ib tug khoom muag, mus rau hauv peb lub rooj.
Xinhua News Agency, lub American Medical Association, "Medical tshuaj" magazine nyuam qhuav luam tawm ib tug kev tshawb fawb qhia tias melamine raws li ib tug raw khoom rau zus tau tej cov tableware nyob rau hauv lub kub txheej txheem, yuav tso cov tshuaj, nrog rau cov khoom noj mus rau hauv tib neeg lub cev.
Cov soj ntsuam ntawm xaiv ob pawg ntawm kev noj qab nyob laus cov txiv neej thiab cov poj niam raws li tus kwv ntawm txoj kev tshawb, ntsig txog, thiaj li hais tias lawv siv melamine tais thiab tais ntawd tej hub zaub mov noj. Tsis pub dhau 12 teev ntawm kev noj mov, kev soj ntsuam kuaj lawv cov zis kuaj.
Cov kev tshwm sim pom tias cov kev siv ntawm Melamine Dinnerware pab pawg neeg ntawm kev kawm, qhov kev pheej melamine cov ntsiab lus ntawm cov zis yog lwm pab pawg neeg ntawm 6.4 lub sij hawm.
Txoj kev tshawb no tsis ntsuam xyuas tej yam uas melamine rau tib neeg noj qab haus huv, los ntawm lub cutlery nyob rau hauv lub melamine yog ib tug ntev-lub sij hawm ua phem rau tib neeg noj qab haus huv tsis tau paub tseeb hais tias. Kws txawj qhia hais tias me nyuam mos liab lub raum muaj nuj nqi yog tseem tsis muaj zog, li ntawd, ntev-lub sij hawm tsawg koob kom tsawg ntawm melamine yooj yim puas lawv lub raum muaj nuj nqi.
Melamine yog ib tug organic compound, dav siv nyob rau hauv coatings, yas, pharmaceuticals, textiles thiab lwm yam liaj teb. Raws li cov khoom txias thiab cua sov kuj yog ib qhov zoo, anti-nco check, tsis yooj yim li ploj mus, melamine raws li lub ntsiab raw khoom ntawm imitation iav tableware.
Soj ntsuam ntawm hais tias cov kev kho mob hauv zej zog rau melamine tej zaum yuav ua rau long-term lom los yuav tau mus ntxiv cov kev tshawb fawb.
Melamine formaldehyde cob nws tus kheej yog non-toxic, tab sis lub melamine formaldehyde cob muaj ib qhov nqi ntawm free formaldehyde, nyob rau hauv lub microwave tawg yuav tau qeeb los tso, li ntawd, kev ruaj ntseg, kev siv ntawm melamine cob ua los ntawm cov tais diav yuav tsum khij "yuav tsis muab tso rau hauv lub microwave "lub pluaj siab zoo lus ceeb toom. Tiam sis hmoov tsis: Raws li qhov chaw tshev, tus nqi lag luam ntawm 13,000 rau 14,000 yuan / tuj ntawm melamine cob cov ntaub ntawv uas rau zus tau tej cov tsis zoo iav tableware tsawg tshaj li 20%. Nrog rau cov nqi ntawm 5,000 yuan / tuj ntawm urea-formaldehyde cob xwb, yuav luag txhaum cai zus tau tej cov iav tableware kev lag luam tacit "thaum cov kev cai."
Urea-formaldehyde cob (uf)
urea vinegar cob (ie urea formaldehyde cob) yog urea thiab formaldehyde los ntawm kev ntxiv polymerization cov tshuaj tiv thaiv ntawm lub thermosetting cob. Tus qauv ntawm cov khoom yog tus complex, ncaj qha los ntawm tus nqi ntawm urea thiab formaldehyde, cov tshuaj tiv thaiv system pH, cov tshuaj tiv thaiv kub, lub sij hawm thiab lwm yam tej yam kev mob. Lub urea-formaldehyde cob, uas yog tsim los ntawm cov tshuaj kev tshawb xav, yog tsuas yog muab faib ua ob theem. Tus thawj theem yog tus tsim ntawm methylol urea, uas yog qhov sib ntxiv cov tshuaj tiv thaiv nyob ntev. Qhov thib ob theem cob yog tus polycondensation cov tshuaj tiv thaiv nyob ntev.
Xa koj cov lus rau peb:
Post lub sij hawm: Jun-02-2017