Cov dej kub khob yas thiab hau yuav raug tshuaj lom. Koj puas paub?

Cov khob dej txias thiab khob yas yas txias. Tab sis ntau tus neeg yuav muaj qhov kev paub no: thaum yuav tshuaj yej mis lossis qee yam dej qab zib kub, tus neeg muag khoom yuav siv lub khob yas los tuav thiab khob yas npog lub khob. Cov dej haus zoo li no puas cuam tshuam rau peb kev noj qab haus huv?

Lub Chaw Saib Xyuas Kev Nyab Xeeb Zoo tau thov kom muaj peev xwm "ceeb toom ceeb toom" rau kev noj qab haus huv thiab kev nyab xeeb. Cov zaub mov qib yas uas muaj ntawv pov thawj dav dav tuaj yeem siv rau ntim khoom noj thiab tsis muaj kev phom sij rau tib neeg lub cev. Feem ntau siv cov yas, polystyrene (PS), vim nws cov rwb thaiv tsev zoo heev, rwb thaiv tsev thiab pob tshab, feem ntau siv los ua cov khoom siv rau khob dej kub thiab hau, lub thawv noj su thiab hau zaub mov, tab sis cov khoom no tsis tiv taus kub. Tam sim no, cov khoom ntim khoom noj ua los ntawm polystyrene cob yuav tsum ua tau raws li qhov yuav tsum tau ua hauv lub teb chaws tus qauv GB 9689-1988" Tus Qauv huv rau Polystyrene Mouldings rau Zaub Mov Ntim&";, tab sis tus txheej txheem no tsis muaj cov khoom ntsuas rau tiv tauj zaub mov hauv qhov kub thiab txias. (Peb tau pom zoo tias National Standards Committee ua kev tshawb fawb txhawm rau txhawm rau nce GB 9689-1988" Tus Qauv huv rau Polystyrene Mouldings rau Zaub Mov Ntim"). Polystyrene muaj cua sov cuam tshuam qhov kub ntawm 70 ℃ txog 100 ℃, uas tuaj yeem ua kom lub cev decomposition ntawm cov tshuaj lom polymer monomers hauv qab cua sov, thiab tom qab ntawd txav mus rau zaub mov, ua rau tib neeg muaj kev noj qab haus huv.

Tab sis cov neeg siv khoom tsis' tsis tas yuav poob siab. Vim tias feem coob ntawm cov dej kub uas tuaj yeem tuav hauv koj txhais tes tsuas yog nyob ib puag ncig 60 ℃, yog li ntawd lawv tsis txhob cia lawv zom cov tshuaj lom. Cov neeg siv khoom yuav tsum txheeb xyuas cov khoom muaj kev nyab xeeb thaum xaiv cov khoom yas cuam tshuam nrog zaub mov. Nws yog txoj hauv kev zoo los txheeb xyuas cov khoom yas uas muaj kev nyab xeeb los ntawm kev saib rau xiav thiab dawb" QS" lub logo Qhov thib ob, peb yuav tsum siv nws txoj kev tshawb fawb. Nqa daim yas 6, tsis txhob' tsis ua txuj ua kom dej npau, tsis txhob' tsis siv lub microwave kom sov nws. Txoj hauv kev noj qab haus huv yog tso dej kub kub uas tsawg dua 90 ℃ thiab tsis txhob' tsis npog lub hau ntev kom tsis txhob muaj cov dej kub ua kom yaj cov tshuaj lom thiab rov qab los. Rau hauv khob. Tsis yog 5 yas polypropylene (PP) nrog cov cua sov ua kom siab dua yog zoo dua li 6 hauv qee qhov xwm txheej. Cov xim ntawm lub hau kuj tshwj xeeb heev. Nws yog qhov zoo tshaj los xaiv dawb lossis pob tshab. Tsis txhob xaiv xim dub lossis xim. Ntau lub khob yas yas dub los yog xim dawb tau ua los ntawm cov khoom seem hauv lub rooj cob qhia lossis tau ntxiv nrog cov tshuaj toner lossis masterbatch thaum cov txheej txheem tsim khoom. Nws zoo li yuav siv cov yas pov tseg thiab nws muaj kev nyab xeeb thiab tsis nyab xeeb.

Ntawm no, lub ntsiab lus ntawm cov khoom yas tau nrov rau cov neeg siv khoom txhawm rau xaiv cov khoom yas tsim nyog hauv lub neej txhua hnub. Hauv qab ntawm lub nkoj yas, ntawm lub khob yas hau lossis lwm qhov chaw uas pom tseeb, muaj daim duab peb sab cim nrog tus lej sab hauv, uas yog tus lej ntawm cov khoom yas.

& "Tsis yog. 1" Tsiaj. Lub raj mis dej ntxhia thiab cov fwj dej haus carbonated tau ua los ntawm cov khoom no. Lawv tiv tshav kub txog 70 ℃. Lawv yooj yim deformed thaum lawv tau ntim nrog cov kua kub lossis ua kom sov, thiab lawv muaj kev phom sij rau tib neeg lub cev.

& "Tsis yog. 2" HDPE (High Density Polyethylene). Feem ntau hauv cov fwj tshuaj, cov khoom tu, khoom da dej, tsis haum rau siv ua khob dej.

& "Tsis yog. 3" PVC (polyvinyl chloride). Nws yog ib qho yooj yim los tsim ob hom tshuaj lom thiab tsis zoo, thiab nws tau siv tsawg dua rau ntim khoom noj. Nws yog qhov zoo tshaj plaws tsis yuav lossis siv.

& "Tsis yog. 4" LDPE (qis ntom polyethylene). Cov yeeb yaj kiab khaws cia, zaj duab xis yas, thiab lwm yam yog txhua yam khoom siv, tiv tshav kub tsis muaj zog, ntau dua 110 ℃ yuav tshwm sim kub yaj tshwm sim, tawm qee qhov kev npaj yas uas tib neeg lub cev tsis tuaj yeem zom tau.

& "Tsis yog. 5" PP (polypropylene). Lub thawv noj su microwave yog ua los ntawm cov khoom no thiab tiv taus qhov kub siab ntawm 130 ℃. Nws yog lub thawv yas uas tuaj yeem tso rau hauv lub qhov cub microwave thiab tuaj yeem rov siv tau tom qab ua tib zoo ntxuav.

& "Tsis yog. 6" PS (polystyrene). Nws tseem tiv taus cua sov thiab tiv taus txias. Nws yog siv los ua cov tais ntawm cov thawv ntim khoom noj sai thiab cov thawv ntim khoom ua npuas. Qhov kub hloov pauv kub yog 70 ℃ -100 ℃. Yog tias qhov kub siab dhau, cov tshuaj lom neeg tuaj yeem ua rau nag lossis daus.

& "Tsis yog. 7" PC thiab lwm chav kawm. Cov khoom siv uas tau siv ntau, feem ntau yog siv hauv kev tsim cov kettles, khob, fwj, thiab lwm yam, muaj teeb meem vim tias nws muaj bisphenol A.