PVC (PolyVinyl Chloride) pob li qub yog dav siv yas kaw li qub.Lub valve muaj ib lub pob rotatable nrog ib tug bore.Los ntawm tig lub pob ib lub hlis twg tig, lub bore yog inline los yog perpendicular rau cov kav dej thiab cov ntws yog qhib los yog thaiv.PVC li qub yog qhov ruaj khov thiab siv nyiaj ntau.Tsis tas li ntawd, lawv tuaj yeem siv rau ntau yam xov xwm, suav nrog dej, huab cua, tshuaj corrosive, acids thiab bases.Piv rau tooj dag lossis stainless hlau pob li qub, lawv tau ntsuas rau qhov kub thiab txias thiab muaj zog dua txhua yam.Lawv muaj nyob nrog kev sib txuas ntawm cov kav dej sib txawv, xws li cov khoom hnyav (socket) lossis cov yeeb nkab xov.Ob chav union, los yog qhov tseeb union li qub, muaj cov yeeb nkab sib txuas sib cais uas tau kho rau lub cev valve los ntawm kev sib txuas threaded.Lub valve tuaj yeem raug tshem tawm yooj yim rau kev hloov, tshuaj xyuas thiab tu.
PolyVinyl Chloride ntau lawm
PVC stands rau PolyVinyl Chloride thiab yog peb feem ntau siv hluavtaws polymer tom qab PE thiab PP.Nws yog tsim los ntawm cov tshuaj tiv thaiv ntawm 57% chlorine gas thiab 43% ethylene gas.Cov roj chlorine yog muab los ntawm electrolysis ntawm seawater, thiab ethylene gas yog tau los ntawm distillation ntawm cov roj crude.Nyob rau hauv kev sib piv nrog rau lwm yam yas, PVC ntau lawm yuav tsum tau tsis tshua muaj crude roj (PE thiab PP xav tau ib ncig ntawm 97% ethylene gas).Chlorine thiab ethylene react thiab tsim ethanedichlorine.Qhov no yog ua tiav kom tau txais Vinylchlorine monomer.Cov khoom no yog polymerized los ua PVC.Thaum kawg, qee cov additives yog siv los hloov cov khoom xws li hardness thiab elasticity.Vim tias cov txheej txheem tsim khoom yooj yim thiab muaj ntau cov ntaub ntawv raw, PVC yog cov khoom siv zoo thiab muaj txiaj ntsig zoo nyob rau hauv kev sib piv nrog lwm cov yas.PVC muaj zog tiv thaiv tshav ntuj, tshuaj lom neeg thiab oxidation los ntawm dej.
PVC khoom
Cov npe hauv qab no muab cov ntsiab lus dav dav ntawm cov yam ntxwv tseem ceeb ntawm cov khoom siv:
- Lub teeb yuag, muaj zog thiab ua haujlwm ntev
- Haum rau kev rov ua dua tshiab thiab tsis tshua muaj kev cuam tshuam rau ib puag ncig hauv kev sib piv nrog lwm cov yas
- Feem ntau siv rau kev huv huv, xws li dej haus.PVC yog cov khoom tseem ceeb siv los khaws lossis hloov cov khoom noj.
- Resistant mus rau ntau yam tshuaj, acids thiab bases
- Feem ntau PVC pob li qub mus txog DN50 muaj qhov siab tshaj plaws ntawm PN16 (16 bar ntawm chav tsev kub).
PVC muaj qhov softening thiab melting point.Yog li, nws tsis pom zoo kom siv PVC rau qhov kub siab tshaj 60 degrees Celsius (140 ° F).
Daim ntawv thov
PVC li qub yog siv ntau hauv kev tswj dej thiab dej.PVC kuj yog tsim rau corrosive media, xws li dej hiav txwv.Ntxiv mus, cov khoom yog resistant rau feem ntau acids thiab bases, ntsev tov thiab organic solvents.Hauv cov ntawv thov siv cov tshuaj corrosive thiab acids, PVC yog li feem ntau xaiv saum stainless hlau.PVC kuj muaj qee qhov tsis zoo.Qhov teeb meem tseem ceeb tshaj plaws yog qhov tsis tu ncua PVC tsis tuaj yeem siv rau kev tshaj tawm kub tshaj 60 ° C (140 ° F).PVC tsis tiv taus cov tshuaj tsw qab thiab chlorinated hydrocarbons.PVC muaj lub zog ua haujlwm qis dua li tooj dag lossis stainless hlau, thiab yog li ntawd PVC li qub feem ntau muaj qhov ntsuas qis dua (PN16 yog qhov qub rau li qub txog DN50).Ib daim ntawv teev npe ntawm kev lag luam uas siv PVC li qub:
- Kev ua dej num hauv tsev / Professional Irrigation
- Kev kho dej
- Cov yam ntxwv ntawm cov dej thiab cov kwj deg
- Aquariums
- Cov chaw pov tseg
- Cov pas dej da dej
- Kev ua tshuaj lom neeg
- Kev ua zaub mov
Post lub sij hawm: May-30-2020