Hauv peb lub neej niaj hnub, lub raj mis yas tuaj yeem pom nyob txhua qhov chaw.Kuv xav paub yog tias koj tau pom tias muaj cov lej cim zoo li lub cim duab peb sab nyob rau hauv qab ntawm feem ntau lub raj mis yas (khob).
piv txwv:
Lub raj mis dej ntxhia, cim 1 rau hauv qab;
Yas tshav kub-resistant khob rau ua tshuaj yej, cim 5 nyob rau hauv qab;
Lub tais ntawm instant noodles thiab cov thawv khoom noj ceev, hauv qab qhia 6;
…
Raws li txhua tus paub, cov ntawv sau rau hauv qab ntawm lub raj mis yas no muaj lub ntsiab lus tseem ceeb, muaj "kev cai tshuaj lom" ntawm lub raj mis yas thiab sawv cev rau kev siv cov khoom yas sib xws.
"Cov lej thiab cov lej nyob hauv qab ntawm lub raj mis" yog ib feem ntawm cov khoom siv yas uas tau teev tseg hauv cov qauv hauv tebchaws:
Daim duab peb sab daim duab peb sab hauv qab ntawm lub raj mis yas qhia txog kev rov ua dua tshiab, thiab cov lej 1-7 qhia txog hom resin siv hauv cov yas, ua kom yooj yim thiab yooj yim los txheeb xyuas cov khoom siv yas.
"1" PET - polyethylene terephthalate
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Cov khoom no yog kub-resistant rau 70 ° C thiab tsuas yog haum rau tuav sov los yog khov dej qab zib.Nws yog yooj yim deformed thaum muaj cov kua kub kub los yog rhuab, thiab cov khoom tsim kev puas tsuaj rau tib neeg lub cev yuav yaj tawm;Feem ntau cov dej ntxhia dej thiab cov raj dej carbonated yog ua los ntawm cov khoom siv no.
Yog li ntawd, nws feem ntau pom zoo kom muab pov tseg lub raj mis tom qab siv, tsis txhob rov qab siv dua, lossis siv los ua cov thawv ntim khoom los tuav lwm yam khoom.
"2" HDPE - siab ceev polyethylene
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Cov khoom no tuaj yeem tiv taus qhov kub thiab txias ntawm 110 ° C thiab feem ntau yog siv los ua cov tshuaj dawb lub raj mis, cov khoom siv tu, thiab cov thawv yas rau cov khoom da dej.Feem ntau ntawm cov hnab yas tam sim no siv hauv cov khw muag khoom noj khoom haus kuj yog ua los ntawm cov khoom siv no.
Hom thawv no tsis yooj yim los ntxuav.Yog tias kev ntxuav tsis huv, cov khoom qub yuav nyob twj ywm thiab tsis pom zoo kom rov ua dua tshiab.
"3" PVC - polyvinyl chloride
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Cov khoom no tuaj yeem tiv taus qhov kub ntawm 81 ° C, muaj cov yas zoo heev, thiab pheej yig.Nws yog ib qho yooj yim los tsim cov khoom tsis zoo ntawm qhov kub thiab txias thiab tseem tso tawm thaum lub sijhawm tsim khoom.Thaum cov tshuaj lom neeg nkag mus rau tib neeg lub cev nrog zaub mov, lawv tuaj yeem ua rau mob qog noj ntshav, yug me nyuam thiab lwm yam kab mob..
Tam sim no, cov khoom siv no feem ntau siv rau hauv cov tsho tiv nag, cov khoom siv hauv tsev, cov yeeb yaj kiab yas, cov thawv yas, thiab lwm yam, thiab tsis tshua muaj siv los ntim khoom noj.Yog tias nws siv, nco ntsoov tsis txhob cia nws txias.
"4" LDPE - tsawg ntom polyethylene
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Cov khoom siv no tsis muaj zog tiv thaiv tshav kub thiab feem ntau yog siv rau hauv kev tsim cov yeeb yaj kiab cling thiab yas zaj duab xis.
Feem ntau hais lus, tsim nyog PE cling zaj duab xis yuav yaj thaum qhov kub siab tshaj 110 ° C, tawm hauv qee qhov kev npaj yas uas tsis tuaj yeem decomposed los ntawm tib neeg lub cev.Ntxiv mus, thaum cov khoom noj yog qhwv rau hauv zaj duab xis cling thiab rhuab, cov roj hauv cov zaub mov yuav yooj yim yaj mus rau hauv zaj duab xis cling.Cov khoom tsis zoo yog yaj.
Yog li, nws raug pom zoo tias cov zaub mov qhwv hauv hnab yas yuav tsum tau muab tshem tawm ua ntej muab tso rau hauv qhov cub microwave.
"5" PP - polypropylene
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Cov khoom no, feem ntau yog siv los ua cov thawv noj su, tuaj yeem tiv taus qhov kub thiab txias ntawm 130 ° C thiab muaj qhov tsis zoo.Nws yog tib lub thawv yas uas tuaj yeem muab tso rau hauv lub qhov cub microwave thiab tuaj yeem rov qab siv tau tom qab ntxuav tag.
Txawm li cas los xij, nws yuav tsum raug sau tseg tias qee lub thawv noj su muaj "5" cim rau hauv qab, tab sis "6" cim ntawm lub hau.Hauv qhov no, nws raug nquahu kom muab lub hau tshem tawm thaum lub thawv noj su tau muab tso rau hauv lub qhov cub microwave, thiab tsis ua ke nrog lub thawv lub cev.Muab tso rau hauv microwave.
"6" PS — Polystyrene
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Cov khoom siv no tuaj yeem tiv taus cua sov ntawm 70-90 degrees thiab muaj qhov pom zoo, tab sis nws tsis tuaj yeem muab tso rau hauv lub qhov cub microwave kom tsis txhob tso cov tshuaj vim qhov kub thiab txias ntau dhau;thiab tuav cov dej qab zib kub yuav tsim cov co toxins thiab tso tawm styrene thaum hlawv.Nws yog feem ntau siv rau hauv kev tsim khoom siv rau lub tais-hom instant noodle thawv thiab ua npuas ncauj ntim khoom noj ceev.
Yog li ntawd, nws raug nquahu kom tsis txhob siv cov thawv ntim khoom noj ceev kom ntim cov zaub mov kub, tsis txhob siv los tuav cov kua qaub uas muaj zog (xws li kua txiv kab ntxwv) lossis cov tshuaj muaj zog alkaline, vim tias lawv yuav decompose polystyrene uas tsis zoo rau tib neeg lub cev thiab tuaj yeem ua tau yooj yim ua rau mob qog noj ntshav.
"7"Lwm yam - PC thiab lwm yam yas codes
Puas yog lub khob yas koj haus los ntawm tshuaj lom?Tsuas yog saib cov lej hauv qab thiab paub!
Qhov no yog cov khoom siv dav siv, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov me nyuam lub raj mis, qhov chaw khob, thiab lwm yam. Txawm li cas los xij, nws tau muaj kev tsis sib haum xeeb nyob rau xyoo tas los no vim nws muaj bisphenol A;yog li ntawd, yuav tsum ceev faj thiab xyuam xim tshwj xeeb thaum siv lub thawv yas no.
Yog li, tom qab nkag siab txog lub ntsiab lus ntawm cov ntawv yas no, yuav ua li cas txhawm rau "tshuaj lom neeg" ntawm cov yas?
4 txoj kev kuaj tshuaj toxicity
(1) Kev ntsuam xyuas pom
Cov hnab yas tsis muaj tshuaj lom yog cov mis dawb, pob tshab, lossis tsis muaj xim thiab pob tshab, hloov tau yooj yim, du rau qhov kov, thiab pom tias muaj cov quav ciab ntawm qhov chaw;Cov hnab yas uas muaj tshuaj lom yog turbid los yog lub teeb daj nyob rau hauv cov xim thiab xav tias nplaum.
(2) Jitter nrhiav pom
Muab ib qho kawg ntawm lub hnab yas thiab co nws lub zog.Yog hais tias nws ua suab nrov, nws tsis muaj tshuaj lom;yog hais tias nws ua suab npub, nws yog tshuaj lom.
(3) Kev ntsuas dej
Muab lub hnab yas tso rau hauv dej thiab nias rau hauv qab.Lub hnab yas uas tsis muaj tshuaj lom muaj lub ntiajteb txawj nqus me me thiab tuaj yeem ntab rau saum npoo.Lub hnab yas uas muaj tshuaj lom muaj lub ntiajteb txawj nqus loj thiab yuav tog.
(4) Kev ntsuas hluav taws xob
Cov hnab yas polyethylene tsis muaj tshuaj lom yog cov nplaim taws, nrog cov nplaim taws xiav thiab daj saum.Thaum hlawv, lawv poob zoo li tswm ciab kua muag, tsis hnov tsw ntawm paraffin, thiab tsim cov pa luam yeeb tsawg.Cov tshuaj lom polyvinyl chloride hnab yas tsis yog nplaim taws thiab yuav tua sai li sai tau thaum lawv raug tshem tawm ntawm qhov hluav taws kub.Nws yog daj nrog lub hauv qab ntsuab, tuaj yeem ua stringy thaum softened, thiab muaj pungent tsw ntawm hydrochloric acid.
Post lub sij hawm: Nov-09-2023