1. Daim ntawv PVC Rigid yog dab tsi?
Lub npe tag nrho ntawm PVC daim ntawv tawv yog polyvinyl chloride daim ntawv tawv. Daim ntawv PVC tawv yog cov khoom siv polymer ua los ntawm vinyl chloride ua cov khoom siv raw, nrog rau cov stabilizers, roj nplua nyeem thiab cov khoom sau ntxiv. Nws muaj cov tshuaj antioxidant siab heev, muaj zog acid thiab txo qis tsis kam, muaj zog siab, ruaj khov zoo heev thiab tsis kub hnyiab, thiab tuaj yeem tiv taus xeb los ntawm kev hloov pauv huab cua. Cov ntawv tawv PVC feem ntau suav nrog cov ntawv PVC pob tshab, cov ntawv PVC dawb, cov ntawv PVC dub, cov ntawv PVC xim, cov ntawv PVC grey, thiab lwm yam.
2. Qhov zoo ntawm daim ntawv PVC Rigid yog dab tsi?
Cov ntawv PVC ruaj khov muaj ntau yam zoo xws li kev tiv thaiv corrosion, tsis kub hnyiab, rwb thaiv tsev, thiab tiv thaiv oxidation. Tsis tas li ntawd, lawv tuaj yeem rov ua dua tshiab thiab muaj cov nqi tsim khoom tsawg. Vim lawv siv ntau yam thiab tus nqi pheej yig, lawv ib txwm nyob hauv ib feem ntawm kev ua lag luam ntawv yas. Tam sim no, peb lub teb chaws txoj kev txhim kho thiab tsim cov thev naus laus zis ntawm cov ntawv PVC tau mus txog qib siab thoob ntiaj teb.
3. Kev siv daim ntawv PVC yog dab tsi?
Cov ntawv PVC muaj ntau yam siv tau, thiab muaj ntau hom ntawv PVC, xws li cov ntawv PVC pob tshab, cov ntawv PVC frosted, cov ntawv PVC ntsuab, cov ntawv PVC yob, thiab lwm yam. Vim nws cov kev ua tau zoo, tus nqi tsim khoom qis, tiv taus corrosion thiab rwb thaiv tsev. Cov ntawv PVC siv dav thiab feem ntau yog siv los tsim: PVC khi npog, PVC daim npav, PVC zaj duab xis tawv, cov ntawv PVC tawv, thiab lwm yam.
4. Qhov tsis zoo ntawm PVC daim ntawv yog dab tsi?
Daim ntawv PVC kuj yog ib hom yas uas siv ntau. Nws yog ib hom resin uas muaj polyvinyl chloride resin, plasticizer, thiab antioxidant. Nws tsis muaj tshuaj lom. Tab sis cov khoom siv tseem ceeb xws li plasticizers thiab antioxidants yog tshuaj lom. Cov plasticizers hauv cov ntawv yas PVC txhua hnub feem ntau siv dibutyl terephthalate thiab dioctyl phthalate. Cov tshuaj no yog tshuaj lom. Cov tshuaj antioxidant lead stearate siv hauv PVC kuj yog tshuaj lom. Cov ntawv PVC uas muaj cov ntsev lead antioxidants yuav ua rau cov lead poob thaum lawv kov cov kuab tshuaj xws li ethanol thiab ether. Cov ntawv PVC uas muaj lead siv rau kev ntim khoom noj. Thaum lawv ntsib cov khob cij kib, ncuav mog qab zib kib, ntses kib, cov nqaij siav, cov khoom noj txom ncauj thiab khoom noj txom ncauj, thiab lwm yam, cov lead molecules yuav diffuse mus rau hauv cov roj. Yog li ntawd, cov hnab yas PVC tsis tuaj yeem siv los tuav cov khoom noj, tshwj xeeb tshaj yog cov khoom noj uas muaj roj. Tsis tas li ntawd, cov khoom yas polyvinyl chloride yuav maj mam decompose hydrogen chloride roj ntawm qhov kub siab dua, xws li kwv yees li 50 ° C, uas yog teeb meem rau tib neeg lub cev.
