Non-Toxic Plasticizers rau PVC: Muaj kev nyab xeeb thiab ruaj khov
Polyvinyl chloride (PVC) yog ntau yam yas siv dav hauv txhua yam ntawm cov khoom siv mus rau cov khoom siv kho mob. Ua kom PVC hloov tau yooj yim dua thiab ua kom yooj yim dua, cov tuam ntxhab feem ntau ntxiv cov yas yas. Kev lig kev cai, phthalates tau yog qhov kev xaiv mus rau plasticizing PVC. Txawm li cas los xij, kev txhawj xeeb txog lawv cov kev pheej hmoo kev noj qab haus huv thiab kev cuam tshuam ib puag ncig tau ua rau kev tshawb nrhiav lwm txoj hauv kev nyab xeeb. Tsab ntawv xov xwm no yuav tshawb txog cov yas yas uas tsis muaj tshuaj lom uas muaj kev ruaj ntseg thiab kev nyab xeeb rau PVC.
Yog vim li cas Phthalates muaj teeb meem
Phthalates, tshwj xeeb tshaj yog di({0}}ethylhexyl) phthalate (DEHP), tau siv ntau xyoo hauv PVC. Kev tshawb fawb tau txuas qee yam phthalates rau ntau yam teeb meem kev noj qab haus huv, suav nrog kev cuam tshuam hormonal, teeb meem kev loj hlob, thiab txawm tias qee yam mob qog noj ntshav. Tsis tas li ntawd, phthalates tuaj yeem tawm ntawm cov khoom dhau sijhawm, ua rau muaj kev txhawj xeeb txog lawv qhov muaj nyob hauv ib puag ncig thiab lawv cov khoom txuam hauv dej hauv lub neej.
Qhov nce ntawm Cov Plasticizers uas tsis muaj tshuaj lom
Hauv kev teb rau cov kev txhawj xeeb no, cov kws tshawb fawb thiab cov kws tshaj lij kev lag luam tau tsim ntau yam ntawm cov yas yas uas tsis muaj tshuaj lom uas hais txog kev noj qab haus huv thiab ib puag ncig cov teeb meem thaum tseem ua tau raws li cov kev xav tau rau kev siv PVC plasticization zoo. Nov yog qee qhov kev xaiv ua ntej:
1. Citrate Esters: Muab los ntawm citric acid, citrate esters zoo li triethyl citrate yog biodegradable thiab muaj kev nyab xeeb rau kev siv ntim khoom noj thiab kev siv tshuaj kho mob.
2. Epoxidized Soybean Oil (ESBO): Qhov no cov yas txuas dua tshiab, ua los ntawm cov roj taum pauv, yog bio-based thiab pab txhim kho thermal stability ntawm PVC.
3. DINCH: Cov yas yas no yog muag rau cov ntaub ntawv rhiab, xws li cov khoom ua si thiab cov khoom siv kho mob. Nws tau dhau los kuaj kev nyab xeeb thiab suav tias yog lwm txoj hauv kev nyab xeeb rau phthalates.
4. Polymeric Plasticizers: Cov molecules loj, zoo li polyester adipates, tsis tshua muaj kev tsiv teb tsaws thiab leach, ua rau lawv ruaj khov hauv PVC.
5. Bio-Based Plasticizers: Tau los ntawm cov khoom siv txuas ntxiv dua tshiab xws li cov roj zaub, cov plasticizers no tsis muaj tshuaj lom thiab pab txo cov pa roj carbon hneev taw ntawm cov khoom siv PVC.
Cov txiaj ntsig ntawm Non-Toxic Plasticizers
Hloov mus rau cov yas tsis muaj tshuaj lom muaj ntau yam zoo:
- Kev Nyab Xeeb: Txo cov kev pheej hmoo ntawm kev noj qab haus huv rau cov neeg siv khoom, tshwj xeeb yog cov khoom siv los ntawm cov menyuam yaus thiab hauv chaw kho mob.
- Kev cuam tshuam ib puag ncig: Ntau yam tsis muaj tshuaj lom lwm yam yog biodegradable, txo qhov kev pheej hmoo ntawm ib puag ncig muaj kuab paug.
- Kev Tswj Xyuas Kev Ua Raws Cai: Raws li cov cai nyob ib puag ncig phthalates nruj, kev siv cov tshuaj tsis muaj tshuaj lom tuaj yeem pab cov tuam txhab ua raws li kev cai lij choj.
- Kev Paub Txog Cov Neeg Siv Khoom: Raws li cov neeg siv khoom xav paub ntau dua cov khoom lag luam, kev siv cov yas yas tsis muaj tshuaj lom tuaj yeem yog qhov muag muag.
Kev Sib Tw Ua Ntej
Txawm hais tias muaj txiaj ntsig, muaj cov nyom rau kev siv cov yas tsis muaj tshuaj lom:
- Tus nqi: Ntau yam kev xaiv tsis muaj tshuaj lom yog kim dua li cov tshuaj phthalates, uas tuaj yeem cuam tshuam kev saws loj.
- Kev ua tau zoo: Tsis yog txhua tus plasticizers tsis muaj tshuaj lom ua tau zoo sib npaug hauv txhua daim ntawv thov. Kev tshawb fawb dav dav thiab kev tsim kho yuav xav tau los nrhiav qhov haum rau cov khoom siv PVC tshwj xeeb.
- Kev Txais Kev Lag Luam: Kev lag luam yuav tsum paub txog cov txiaj ntsig ntawm cov yas yas tsis muaj tshuaj lom, thiab cov neeg siv khoom yuav tsum tau kawm txog lawv qhov zoo.
Xaus
Kev hloov pauv ntawm cov phthalates uas muaj feem cuam tshuam rau cov yas yas tsis muaj tshuaj lom yog qhov kev hloov pauv tseem ceeb hauv kev lag luam PVC. Raws li kev txhawj xeeb txog kev noj qab haus huv thiab ib puag ncig txuas ntxiv mus, qhov kev thov kom muaj kev nyab xeeb dua, cov khoom siv ruaj khov tsuas yog nce ntxiv. Cov yas yas tsis muaj tshuaj lom yog qhov chaw zoo kom tau raws li qhov kev thov no, kom ntseeg tau tias PVC tseem yog lub luag haujlwm xaiv rau yav tom ntej.