Kev nyab xeeb ntawm kev ntim khoom noj

Cov ntsiab lus ntawm kev tu cev ntawm cov khoom noj khoom haus tsis zoo tag nrho

(1) Cov ntaub ntawv ntim khoom noj khoom haus tsis muaj tus qauv sib koom ua ke tam sim no hauv tebchaws tsis tau tsim cov qauv kev ua tau zoo ntawm cov ntaub ntawv ntim khoom noj khoom haus, thiab tsuas yog muaj cov cai txheem hauv cov khoom me me xwb, xws li GB / T10004 & ndash; 2008 ntim yas sib xyaw zaj duab xis, hnab, cov khoom sib xyaw qhuav, 'qhia txog cov kuab tshuaj seem hauv cov kev cai sib xws.

(2) Feem ntau cov qauv kev huv ntawm cov khoom ntim khoom noj tam sim no tsis siv tau ntau thiab ntau hom khoom ntim khoom noj. Rau kev kuaj pom cov kuab tshuaj seem, ntau lub teb chaws tau teeb tsa cov hom phiaj ntawm nws cov kev cai. Hauv GB/T10004 - 2008 cov yas yas sib xyaw ua ke, hnab, thiab cov khoom sib xyaw qhuav extrusion, 'cov kev cai tseem ceeb hauv cov txheej txheem ntawm cov kuab tshuaj seem tsis pub ntau tshaj 5 mg/m2, tab sis tsis tau teev hom kuab tshuaj twg, hauv qhov ntau ntawm 5 mg/m2 txhua yam kuab tshuaj kuj tsis tau faib ntau ntxiv. Cov qauv kev noj qab haus huv hauv tebchaws kuj txwv tsis pub siv cov yas pov tseg ua cov khoom siv raw ntawm kev tsim cov thawv ntim khoom noj yas. Tab sis kuj tseem muaj kev zais ntau dua ntawm kev puas tsuaj, cov thawv ntim khoom noj yas ua los ntawm cov khoom siv raw. Rau cov thawv ntim khoom noj yas uas tsis muaj qhov txwv, pawg neeg qauv hauv tebchaws tab tom ua haujlwm los hloov kho thiab txhim kho cov txheej txheem.

(3) Feem ntau cov qauv ntawm cov khoom ntim khoom tsis yog tsuas yog ib feem ntawm qhov yuav tsum tau ua ntawm cov tshuaj seem ntawm cov khoom siv xwb, tab sis kuj piav qhia txog qee cov cim qhia yooj yim ntawm kev xav, xws li cov khoom ntim yuav tsum tsis muaj ntxhiab tsw txawv, cov kua dej uas tau ntim yuav tsum tsis muaj ntxhiab tsw txawv, thiab lwm yam, tab sis tsis muaj cov cim qhia tshwj xeeb uas yuav tsum tau muab tso rau pem hauv ntej. Thaum lub sijhawm tsim khoom, cov khoom ntim khoom noj yuav tsum muaj cov tshuaj seem. Hauv cov txheej txheem luam ntawv yas sib xyaw thiab cov txheej txheem ua kom qhuav, yuav tsum siv ntau cov tshuaj organic xws li toluene, ethyl acetate thiab ethyl ketone, thiab lwm yam. Raws li qhov yuav tsum tau ua ntawm cov txheej txheem, cov tshuaj yuav tsum tau ua kom qhuav, tab sis vim ntau yam laj thawj, thaum tsim khoom tiag tiag, yuav muaj ntau dua lossis tsawg dua cov tshuaj uas tsis yaj tag, hu ua cov tshuaj seem. Cov tshuaj seem yog kev sib xyaw ntawm ntau hom tshuaj, feem ntau thaum cov tshuaj seem hauv qab qee qhov txwv, tib neeg tsis hnov ​​tsw, tab sis cov tshuaj seem siab uas tib neeg hnov ​​tau. Xws li PVC (PVC) Cov yas qhwv ua rau mob qog noj ntshav ua rau muaj kev cuam tshuam loj heev hauv tsev. "GB9681— 1988 cov khoom noj khoom haus ntim khoom PVC molding khoom noj khoom haus tus qauv 'hauv cov kev cai tshwj xeeb, cov ntsiab lus ntawm vinyl chloride monomer tsawg dua lossis sib npaug rau 1 mg ib kilogram. Cov khoom sib xyaw ua ke ntawm vinyl chloride monomer muaj nyob rau hauv PVC cling zaj duab xis, tom qab nws ua rau tib neeg lub cev muaj carcinogenicity. European Union thiab Tebchaws Meskas, Nyiv, tau txwv tsis pub siv cov khoom no rau zaub mov. Hloov kho ntau zaus, tab sis feem ntau yog kom hloov qee qhov kev hloov pauv no. "Cov xwm txheej ntawm zaj duab xis cling & thoob plaws; Ib zaug ntxiv tau tshaj tawm cov qauv tseem ceeb ntawm peb lub teb chaws tau tshaj tawm qhov kev ncua sij hawm ua haujlwm. Yog li cov khoom ntim khoom noj khoom haus rau kev kuaj pom cov tshuaj lom neeg kom tsim cov ntsuas ntau yog qhov tseem ceeb.