Yas qhwv cov khoom siv tau siv rau pob khoom noj hauv tsev neeg
Dab tsi ntawm cov yas qhwv puas muaj?
YAS qhwv yuav tshwm sim muag thiab pob tshab, tab sis nws cov ntaub ntawv sib txawv. Nws ib txwm ua los ntawm cov ntaub ntawv yas hauv qab no:
Polyethylene (PE):Qhov no yog ib qho ntawm feem ntau siv cov ntaub yas qhwv ntaub yas, siv dav rau nws txoj kev nyab xeeb thiab tus nqi qis. Thaum Polyethylene muaj cov pa ua pa zoo, nws tseem muaj kev txom nyem los ntawm kev sib zog tsis zoo thermal thiab nce zuj zus.
Polyvinyl chloride (PVC):Ntxov yas yas qhwv feem ntau siv pvc cov khoom siv. Hom kev qhwv yas muaj siab transparency thiab kev ua kom zoo dua qub, tab sis vim muaj kev nyab xeeb, tshwj xeeb yog thaum muaj kev sib cuag nrog cov zaub mov muaj roj.
Yas qhwv cov khoom siv tau siv rau pob khoom noj hauv tsev neeg
Polyvinylidene chloride (PVDC):Hom kev qhwv cov yas muaj cov khoom siv zoo, tab sis nws siv yog qhov tsawg tsawg vim yog nws tus nqi siab thiab ib puag ncig.
Lwm cov khoom siv biodegradable: Nrog kev paub ntau ntxiv, qee cov ntaub qhwv yas tau pib ua ke los sib xyaw lossis cov ntaub ntawv biodarradable, xws li polylactic acid (PLA).
Yuav ua li cas paub qhov txawv ntawm cov cua sov thiab tsis -} sov yas yas yas?
Thaum cov khoom cua sov muab qhwv rau hauv cov yas qhwv hauv tsev, puas yog nws tuaj yeem muab cov yas qhwv sab hauv thiab rhaub nws ua ke? Koj tuaj yeem xa mus rau cov kev ntsuas hauv qab no:
(1) polyethylene (PE): Qhov no yog ib qho yas qhwv rau ntawm kev ua lag luam. Cov yas qhwv ua los ntawm cov khoom siv no tuaj yeem siv rau microwave cua sov. Txawm li cas los xij, thaum rhuab ntev thiab ntsuas kub ntau dua 110 degree, nws yuav yaj. Yog li, nws raug nquahu kom tsis txhob muab cov zaub mov qhwv hauv lub microwave hauv lub microwave hauv lub microwave nyob ntev, lossis kom sov} qhov kub kub} qhov kub kub.
(2) polyvinyl chloride (PVC):Cov yas qhwv ua los ntawm cov khoom siv no muaj cov khoom siv yas thiab tuaj yeem tso cov yeeb yam uas muaj kev phom sij thaum kub siab. Nws tsis pom zoo rau cua sov.
(3) polyvinylidene chloride (PVDC):Cov yas qhwv ua los ntawm cov khoom siv no muaj kev ua tau zoo thiab tuaj yeem tiv taus ntau qhov kub ntawm 140℃rau 180 degree. Nws tuaj yeem siv tau rau cua sov, tab sis nws raug nquahu kom tsis txhob sov nws hauv qhov siab- qhov cub kub.
Ib qho ntxiv, koj tuaj yeem tshawb xyuas daim ntawv lo lossis cov lus qhia ntim khoom. Qee cov tuam ntxhab feem ntau qhia rau ntawm kev ntim ntawm cov ntaub qhwv yas uas nws tuaj yeem siv rau cua sov. Yog tias cov ntaub qhwv ntaub qhwv tau yuav los ntawm ib txwm channel thiab ntim kom meej meej hais tias nws tuaj yeem siv rau microwave cua sov, ces qhwv cov ntaub yas no feem ntau muaj kev nyab xeeb.
Cov ntaub qhwv cov ntaub qhwv muaj cov carcinogenic goolizers?
Thaum tib neeg xav txog cov yas qhwv, lawv tej zaum xav txog cov tshuab raj carcinogenic. Thaum PVC yas qhwv muaj cov yas tshuab DEHP tau ua qee yam kev pheej hmoo, lwm hom yas qhwv tsis txhob ua rau muaj kev phom sij ntau.
Phthalates (Paes) yog ib lo lus dav dav rau chav kawm ntawm cov yas ua tshuaj ntsuab. Hauv tsev neeg no ntawm cov pog, Di (2-ortylhexyl) pyhalate (1) cov khoom lag luam, xws li cov khoom siv kho mob, khoom ua si, thiab ntim khoom.
DEHP tuaj yeem tsiv chaw nyob thaum lub sijhawm ua cua sov, ua kom muaj kev pheej hmoo txaus rau tib neeg. Nws tuaj yeem cuam tshuam nrog lub cev lub cev, ua rau muaj kev cuam tshuam endocrine, thiab txawm tias ua rau muaj kev yug los yog lwm yam kev ua kom muaj kev phom sij. Txawm li cas los xij, cov kev xav ntawm DEHP uas tib neeg tau nthuav tawm txhua hnub yog ib txwm nyob deb dua cov theem uas tuaj yeem ua rau cov teeb meem kev noj qab haus huv. Ntxiv mus, cov kev tshawb fawb tam sim no qhia tau tias cov teebmeem xwm txheej ntawm DEHA ntawm kev ua haujlwm tsiaj thiab kev loj hlob muaj tsawg. Feem ntau ntawm cov kev tshawb fawb no tau ua nyob rau hauv cov kev ua kom ntau dua li cov theem raug nyob hauv lub neej txhua hnub. Yog li ntawd, tsuav yog kev siv DEHP ua tau raws li qhov yuav tsum muaj thiab tsim nyog, tsis tas yuav txhawj dhau ntau. Dab tsi yuav tsum tau sau tseg yog tias txhua tus yuav tsum tau muab cov khoom yas qhwv los ntawm cov khoom lag luam tsis muaj txiaj ntsig vim tias kev ntshaw rau cov nyiaj me me.
Tsis tas li ntawd, nws muaj nqis hais txog uas txhawm rau daws cov teeb meem toxicity ntawm Dehp, xws li Dibutyl phthalate (DBP Butyl lquare (BBP). Txawm hais tias cov kev xaiv no tseem muaj qee yam kev phom sij kev nyab xeeb, lawv yog qhov sib tham zoo. Yog tias koj txhawj xeeb txog kev muaj kev muaj kev noj qab haus huv ntawm kev siv PVC yas qhwv muaj DEHP, koj tuaj yeem xaiv tau kev nyab xeeb dua.
Cov hnab yas ntim rau hauv cov yas qhwv tau yooj yim sau high - cov zaub mov rog
Hom yas qhwv ntaub roj? Yuav cov roj los ntawm cov khoom noj yaj cov yas qhwv?
Qee tus neeg xav paub txog yog vim li cas qee zaum ntau cov roj saib pom tawm ntawm cov npoo ntawm cov yas qhwv. Puas yog vim tias cov rog hauv cov zaub mov yaj cov ntaub qhwv? Qhov tseeb, qhov no tsis yog. Cov ntaub qhwv yas yog cov khoom siv polymer, uas yog tsim ntawm polymerized ethylene molecules. Muaj cov khoob ntawm cov lwg me me ntawm cov ntaub ntawv polymer, thiab "cov roj molecules" hauv cov zaub mov tuaj yeem dhau los ntawm cov khoob no, uas ua rau cov roj SUPPAGE. Cov molecular gaps ntawm HDPE yas qhwv yog me me, yog li nws tsis yooj yim rau pom roj; Qhov khoob ntawm LDPE yog loj, yog li nws yooj yim rau nrhiav roj.
Qhov no kuj yog vim li cas txawm tias noj cov plaub hau nrog hnab looj tes, koj ob txhais tes yuav tseem tau txais roj oily.
Looj hnab looj tes looj tes kom noj crayfish tseem yuav xau dej
Qee Netizens yuav xav paub, vim li cas tsis tshua muaj - ntom polyethylene tsis dej {{1} permeable? Tsawg - qhov ceev polyethylene yas qhwv yog muaj ntau hydrophobic. Cov dej ua kua tsis tuaj yeem ntub lub txiv laum huab cua ntawm cov lwg me me thiab tiv thaiv cov dej tsis tu ncua los ntawm kev hla dhau ntawm cov kua (dej vapor tuaj yeem dhau mus).
Yog tias koj pom tias cov yas qhwv uas tau siv los qhwv cov zaub mov tau xau roj, koj puas tuaj yeem noj zaub mov? Yog tias cov nyhuv kub tsis tau coj mus rau hauv kev txiav txim siab, cov roj yuav tsuas yog pom ntawm cov ntaub qhwv yas thiab yuav tsis yaj nws. Tsis tas yuav txhawj xeeb txog kev noj cov "kua yas qhwv".
Cov lus qhia thiab kev ceev faj rau xaiv thiab siv cov ntaub qhwv yas
(1) Kuaj cov khoom hom:
Polyethylene (PE): Feem ntau suav hais tias yog qhov kev xaiv zoo thiab haum rau kev siv txhua hnub.
Polyvinyl chloride (PVC): Tej zaum yuav muaj cov tshuab yas thiab raug pom zoo kom tsis txhob siv cov ntim khoom noj.
Polyvinylidide (PVDC): Muaj cov khoom muaj teeb meem zoo dua, tab sis yog kim dua thiab muaj kev cuam tshuam ib puag ncig uas yuav tsum tau txiav txim siab.
(2) Kuaj cov khoom ntawv cim:Kuaj seb lub ntim muaj lub cim kev nyab xeeb zaub mov thiab seb nws yog cim li microwave.
(3) transparency thiab nplaum:Cov yas qhwv zoo yuav tsum muaj qhov zoo transparency thiab tsim nyog lo kom haum kom nws yooj yim txuas rau cov thawv ntim khoom noj.
(4) Kub siv:Ua raws li cov ntawv qhia pob, tshwj xeeb yog cov neeg hais txog cov khoom tuaj yeem ua kom sov. Tsis txhob siv cov ntaub qhwv yas uas tsis haum rau cov cua kub thaum kub siab, xws li hauv microwave.
(5) Zam kev sib cuag ncaj qha nrog lub siab- cov zaub mov rog:Qee hom ntaub qhwv ntaub qhwv yuav "dej xau" thaum sib cuag nrog siab - cov zaub mov rog thiab tuaj yeem tso tawm tshuaj lom neeg.
(6) Tsis tas li ntawd, feem ntau cov ntaub ntawv yas yog ua los ntawm PE. Txawm li cas los xij, tsis yog tag nrho cov ntaub qhwv cov khoom cim nrog PE, siab {1} {{{{{{{{} qhov kub (ldpe) tuaj yeem siv los qhwv cov zaub mov.Nws yog ib qho tseem ceeb kom nco ntsoov tias lawv yuav tsum muaj cov lus "zaub mov {{{{}} ME", "QS Kev Nyab Xeeb Kev Nyab Xeeb" lossis "QS" los siv los tuav cov zaub mov. Cov hnab yas ntim cov hnab ntim khoom siv rau PE, yog li tsis siv lawv los tuav cov zaub mov!Feem ntau hais lus, yas qhwv uas tsis tuaj yeem siv los qhwv cov zaub mov feem ntau muaj cov roj hmab ntau dhau thiab cov tshuaj muaj teeb meem xws li DEHP.
Cov saum toj no yog cov kev paub cuam tshuam txog cov yas qhwv. Thaum xaiv cov ntaub qhwv yas, nws yog ib qho tseem ceeb kom them sai sai rau hom thiab kev nyab xeeb ntawm cov khoom kom tsis txhob xaiv cov khoom muaj kuab lom. Thaum siv, ua raws li cov lus qhia kev nyab xeeb, tshwj xeeb tshaj yog cov lus qhia txog cua sov. Nyob rau tib lub sijhawm, xav txog ib puag ncig ib puag ncig thiab xaiv cov rov qab los yog biodegradable xaiv tuaj yeem txo cov kev cuam tshuam ib puag ncig. Los ntawm ua raws cov ntsiab lus no, koj tuaj yeem ua kom muaj kev nyab xeeb ntawm koj cov zaub mov thaum txo qis kev puas tsuaj rau koj kev noj qab haus huv thiab ib puag ncig.
