Puas phthalate dawb txhais tau tias pvc dawb?

Cov txheej txheem:

Puas phthalate dawb txhais tau tias pvc dawb?
Puas phthalate dawb txhais tau tias pvc dawb?

Video: Puas phthalate dawb txhais tau tias pvc dawb?

Video: Puas phthalate dawb txhais tau tias pvc dawb?
Video: How To Have Good Demonstration of Higher Value (DHV) Stories 2024, Kaum ib hlis
Anonim

PVC (polyvinyl chloride) yas, tseem hu ua vinyl [1], yog nruj thiab nkig hauv nws daim ntawv ntshiab. … Hauv teb, vinyl manufacturers tau qhia cov khoom tsis muaj phthalate uas hloov phthalates nrog lwm cov yas yas.

YPuas yog PVC-dawb tib yam li phthalate dawb?

U. S. vinyl producers muaj tag nrho cov tsim lwm txoj kev. Txawm li cas los xij, feem ntau cov vinyl flooring yog imported los ntawm Tuam Tshoj, thiab nws yuav nyuaj rau txiav txim seb tag nrho cov ntshuam no yog phthalate dawb. PVC-dawb flooring tsis muaj phthalates, thiab yog li tshem tawm kev txhawj xeeb nrog lawv.

Phthalate dawb txhais li cas?

Non-phthalates yog cov plasticizers tseem ceeb uas tsis muaj phthalates.… Txawm hais tias qhov tsawg tsawg ntawm phthalates tsis muaj kev phom sij, muaj kev tshawb fawb tsis ntev los no qhia tias muaj feem cuam tshuam tsis zoo rau cov phthalates tuaj yeem ua rau peb noj qab haus huv. Yog li ntawd, ntau tus neeg tau txais kev pab hloov pauv cov yas uas tsis yog phthalate.

Qhov txawv ntawm PVC thiab phthalates yog dab tsi?

PVC sawv cev rau polyvinyl chloride thiab muaj kwv yees li 57% chlorine. PVC yog ib hom yas uas nyuaj tag nrho tshwj tsis yog cov yas ntxiv ntxiv. Phthalates yog nquag siv los ua cov yas PVC Txhawm rau kom ruaj khov PVC tawv, cov hlau hnyav, tshwj xeeb tshaj yog cov txhuas thiab cadmium, tau siv yav dhau los.

YPuas yog PVC yog phthalate?

Phthalates muaj nyob hauv: cov khoom siv PVC xws li cov ntaub pua tsev, cov ntaub pua rooj da dej, thiab cov khoom ua si menyuam yaus. Ntau yam khoom siv tu tus kheej, xws li tshuaj tsw qab, ntsia thawv polish, thiab tshuaj pleev. Cov zaub mov muaj roj uas tau los rau hauv cov khoom siv ua zaub mov lossis ntim khoom noj uas muaj phthalates.

Pom zoo: