Dab tsi yog qhov txawv ntawm UPVC thiab PVC?
Thaum ob hom tau siv dav, muaj qhov sib txawv ntawm UPVC thiab PVC.Qhov tseeb, muaj ntau yam khoom uas tiv thaiv lawv, cia peb saib seb lawv tsim thiab siv li cas.
kev tsim khoom
Feem ntau, ob hom yog tsim los ntawm cov polymer polyvinyl chloride.Txawm li cas los xij, cov neeg tsim khoom uas ua cov kav dej no tuaj yeem sib xyaw ntau yam plasticizers rau hauv kev sib xyaw kom yooj yim rau kev ua haujlwm nrog.Thaum cov plasticizers tsis siv, cov yeeb nkab hu ua UPVC.
Yam ntxwv
Qhov sib txawv ntawm UPVC thiab PVC kav kuj txuas mus rau cov khoom.Plasticizers yog siv rau hauv cov kav dej PVC, nrog phthalates feem ntau.Qhov no thiab lwm yam plasticizers yog cov ntxhiab tsw thiab tsis muaj xim esters.Thaum muab tso rau hauv PVC, lawv ua rau cov yeeb nkab uas tsim tau ntau dua thiab hloov tau los ntawm kev txhim kho tag nrho cov yooj yim.UPVC tsis muaj cov yas yas, thiab UPVC tsis muaj BPA ntawm PVC.
Plasticizers yog tsim thaum cov kua qaub thiab cawv chemically reacts.Feem ntau siv cov kua qaub xws li phthalic anhydride thiab adipic acid.Muaj ntau hom cawv, thiab kev sib xyaw ua ke ntawm cov kua qaub thiab cawv yog siv los txiav txim siab hom esters thiab plasticizers uas tuaj yeem ua tau.
PVC yog dav siv los hloov cov kav hlau qub, cov kav dej cement, thiab lwm yam hauv cov kav dej, cov kav dej khib nyiab thiab cov pas dej ua ke.Kev siv cov kua nplaum tuaj yeem siv los kho nws, uas yooj yim rau kev tsim kho.UPVC paub txog nws cov tshuaj tiv thaiv.Nws kuj tseem pab kom cov dej txaus txaus vim yog cov phab ntsa zoo nkauj.Nws yog qhov nyuaj dua li PVC, tab sis suav tias yog muaj zog dua, ua rau nws tiv taus ntau yam kev khiav hauj lwm siab thiab kub.
Kev kho mob
Ob qho tib si ntawm cov kav dej tau ua haujlwm zoo ib yam.Qee cov cuab yeej hluav taws xob rau kev txiav PVC thiab yas txiav hacksaw hniav yog tsim rau ob hom kav dej.Qhov sib txawv ntawm ob yog ua nrog qhov hloov pauv loj.Piv txwv li, yog tias PVC tsis raug txiav, nws qhov yooj yim tso cai rau nws tseem haum zoo.Txawm li cas los xij, nrog uPVC, nws yuav tsum raug txiav kom raug ntsuas los yog nws yuav tsis ua haujlwm rau daim ntawv thov.Qhov no yog vim nws nruj thiab tsis tuaj yeem ncab me ntsis li PVC.
Hauv kev tsim kho, ob hom yas yog siv los ua ntau yam ntawm cov kav dej.Piv txwv li, cov kav dej PVC loj tuaj yeem siv los pab txav cov dej tsis muaj dej.Lwm qhov kev siv yog rau cov cables, qhov twg feem ntau PVC muab cov rwb thaiv tsev ntxiv.
Hauv kev tsim kho, uPVC yog qhov zoo tagnrho hloov rau ntoo hauv ntau qhov xwm txheej.Piv txwv li, nws tuaj yeem siv los ua qhov rais thav duab uas muaj zog dua thiab tuaj yeem tiv taus cov ntsiab lus zoo dua li ntoo.PVC tsis tu ncua siv tsis tau los tsim cov qhov rais thav duab.Qhov no yog vim uPVC tsis decompose, tab sis ib txwm PVC ua.Ordinary PVC tsis yog tawv-resistant li uPVC.Cov neeg ua haujlwm hauv kev tsim kho kuj tuaj yeem siv cov khoom siv no los ntawm cov hlau cam khwb cia rau qee qhov dej ntws thiab cov kav dej
Post lub sij hawm: Aug-06-2022