Qhov teeb meem tseem ceeb ntawm cov khoom siv blister PVC ntawm blister tshuab

Polyvinyl chloride kuj tseem yog cov yas siv ntau, uas yog cov khoom siv los ntawm polyvinyl chloride resin, plasticizer thiab anti-aging agent, thiab tsis muaj tshuaj lom los ntawm nws tus kheej. Txawm li cas los xij, cov ntaub ntawv tseem ceeb xws li plasticizers thiab antioxidants ntxiv yog tshuaj lom. Cov plasticizers nyob rau hauv niaj hnub PVC yas feem ntau yog siv dibutyl terephthalate, dioctyl phthalate, thiab lwm yam. Cov tshuaj Txhua tus yog tshuaj lom, thiab lead stearate, ib qho antioxidant rau polyvinyl chloride, kuj yog tshuaj lom. Cov hmoov txhuas yuav raug precipitated thaum polyvinyl chloride (PVC) cov khoom uas muaj cov hmoov lead ntsev antioxidants tuaj rau hauv kev sib cuag nrog ethanol, ether thiab lwm yam kuab tshuaj. Polyvinyl chloride uas muaj cov ntsev ntsev yog siv los ua cov khoom ntim khoom noj thiab thaum nws ntsib cov khob cij kib, kib ncuav, kib ntses, cov khoom noj nqaij, ncuav thiab khoom noj txom ncauj, cov hmoov lead molecules yuav diffuse rau hauv cov roj, yog li polyvinyl chloride hnab yas siv tsis tau. Cov zaub mov muaj, tshwj xeeb tshaj yog tsis muaj roj zaub mov. Tsis tas li ntawd, cov khoom siv yas polyvinyl chloride yuav maj mam decompose hydrogen chloride roj ntawm qhov kub thiab txias, xws li txog 50 degree, uas yog teeb meem rau tib neeg lub cev. Yog li, cov khoom siv polyvinyl chloride tsis haum rau ntim khoom noj.