PVC SG-5 rau cov yeeb nkab
PVC SG-5 rau cov yeeb nkab,
PVC rau kev tsim cov yeeb nkab, PVC SG-5 cob,
Sg-5 resin nrog qib qis ntawm polymerization yuav tsum tau xaiv hauv cov tube nyuaj.Qhov siab dua ntawm polymerization, lub cev thiab cov khoom siv hluav taws xob thiab cov cua sov ua haujlwm
Qhov zoo dua cov khoom yog, tab sis cov dej tsis zoo ntawm cov resin coj tej yam nyuaj rau kev ua, yog li qhov viscosity feem ntau yog (1).7 ~ 1. 8) x 10-3 pa
• SG-5 resin ntawm S yog haum.Cov yeeb nkab tawv feem ntau siv lead ua stabilizer, nws zoo thermal stability, feem ntau siv peb cov hlau lead, tab sis nws
Nws feem ntau yog siv cov hmoov lead thiab barium soaps nrog lubricity zoo.Kev xaiv thiab siv cov roj nplua nyeem tseem ceeb heev rau kev ua cov yeeb nkab nyuaj.
Ob qho tib si hauv lubrication thiab sab nrauv lubrication yuav tsum tau txiav txim siab kom txo qis intermolecular quab yuam, kom yaj viscosity yuav raug txo kom tsim, thiab tiv thaiv yaj.
Lo rau cov hlau kub kom muab lub ntsej muag ci.Hlau xab npum feem ntau yog siv rau hauv lubrication, thiab siv quav ciab uas tsis tshua muaj melting point yog siv rau sab nraud lubrication.Filler tus tswv
Siv cov calcium carbonate thiab barium (barite hmoov), calcium carbonate ua rau qhov chaw ntawm cov yeeb nkab zoo, barium tuaj yeem txhim kho cov molding, kom cov yeeb nkab yooj yim rau cov duab, ob
Tus nqi tuaj yeem txo qis, tab sis ntau dhau yuav cuam tshuam rau kev ua haujlwm ntawm cov yeeb nkab, cov yeeb nkab siab thiab corrosion resistant yeeb nkab tau zoo dua tsis ntxiv los yog ntxiv cov muab tub lim tsawg dua.
Dab tsi yog PVC thiab CPVC Pipes?
Cov kav dej PVC
Tsim nyob rau xyoo 1930s, PVC (polyvinyl chloride) kav tau dhau los ua tus qauv rau cov kav dej hauv nroog thiab cov kav dej thoob plaws ntiaj teb.Hauv Tebchaws Meskas, peb lub hlis twg ntawm txhua lub tsev siv PVC.Txij li thaum xyoo 1950, nws tau dhau los ua kev hloov pauv rau cov kav hlau
PVC yog tsim los siv ib qho ntawm peb cov txheej txheem polymerization: ncua kev kawm ntawv polymerization, emulsion polymerization, lossis bulk polymerization.Feem ntau ntawm PVC yog tsim los ntawm kev tshem tawm polymerization.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov kav dej PVC tuaj nyob rau hauv ob daim ntawv: nruj thiab unplasticized.Daim ntawv nruj zoo li thawj zaug los rau hauv siab - xav tias cov dej haus, kav dej, dej phwj tuaj, thiab kev ua liaj ua teb.Daim ntawv tsis muaj ntaub ntawv yog hloov tau, uas yog qhov zoo rau kev siv hauv kev siv xws li kev kho mob tubing thiab rwb thaiv tsev rau cov xov hluav taws xob.
Qee qhov zoo ntawm cov yeeb nkab PVC suav nrog nws lub zog, muaj zog, ruaj khov, tsis tshua muaj nqi, yooj yim installation, thiab tiv thaiv xeb thiab xeb.
CPVC cov kav dej
CPVC yog qhov tseem ceeb PVC uas tau chlorinated.Cov txheej txheem chlorination tso cai rau CPVC tiv taus qhov kub thiab txias - txog 200 ° F - thiab txhim kho nws cov hluav taws kub thiab corrosion kuj.Vim nws qhov kub thiab txias tsis kam, feem ntau cov cai hauv tsev xav tau CPVC kav dej rau kev siv dej kub, txawm tias nws tuaj yeem siv tau rau cov dej kub thiab dej txias.Tsis tas li ntawd, CPVC yog dav siv nyob rau hauv kev siv hluav taws xob sprinkler systems.
Cov npe ntawm CPVC qhov zoo ntxiv.Rau ib qho, nws cov tshuaj thiab qhov kub thiab txias ua rau nws ruaj khov thiab ua kom lub neej ntev.
Vim tias nws muaj peev xwm tiv taus qhov kub thiab txias thiab nws qhov dav ntawm kev lag luam thiab kev lag luam, CPVC tuaj ntawm tus nqi siab dua li PVC.
Dab tsi yog qhov txawv ntawm PVC thiab CPVC kav?
Qhov sib txawv tseem ceeb ntawm PVC thiab CPVC yog lawv lub peev xwm tiv taus kub.Raws li tau hais ua ntej, CPVC yeeb nkab tuaj yeem tiv taus txog 200 ° F, hos PVC yeeb nkab tuaj yeem tiv taus txog 140 ° F.Yog tias koj mus rau saum cov kub no, ob qho tib si yuav pib muag, uas tuaj yeem ua rau cov pob qij txha tsis muaj zog thiab cov kav dej tsis ua haujlwm.Yog li ntawd, ntau tus neeg kav dej yuav pom zoo kom koj siv CPVC rau cov kab dej kub thiab PVC rau cov kab dej txias.
Txawm hais tias PVC muaj ntau qhov zoo, CPVC muaj qhov yooj yim dua, thiab muaj nyob rau hauv ob qho tib si nominal yeeb nkab loj (NPS) thiab tooj liab raj loj (CTS).Hauv qhov sib piv, PVC tsuas yog muaj nyob rau hauv NPS system.Ob lub kav dej muaj nyob rau hauv 10 ft thiab 20 ft ntev.
Nyob rau hauv cov nqe lus ntawm tsos, PVC kav yog dawb los yog tsaus grey nyob rau hauv cov xim, thiab CPVC kav feem ntau yog tawm-dawb, lub teeb grey, los yog daj.Yog tias muaj lus nug, ob leeg yuav muaj lawv cov kev qhia tshwj xeeb luam tawm ntawm sab.Txij li cov tshuaj muaj pes tsawg leeg sib txawv ntawm ob, cov kuab tshuaj cement thiab cov khoom sib txuas yuav tsum tsis txhob siv sib hloov.
Dab tsi yog qhov zoo sib xws ntawm PVC thiab CPVC kav?
Thaum nws los txog rau kev ua haujlwm thiab lub cev zoo sib xws, PVC thiab CPVC muaj cov npe zoo tshaj plaws.Rau ib qho, cov khoom ntawm ob lub kav dej tso cai rau lawv tiv thaiv corrosion thiab degradation los ntawm cov tshuaj.Qhov thib ob, ob qho tib si muaj kev nyab xeeb siv nrog dej haus thaum ANSI / NSF 61 tau ntawv pov thawj.Ob leeg tuaj nyob rau hauv Teem sijhawm 40 thiab Teem sijhawm 80 thickness, thiab muaj nyob rau hauv qhov kawg kawg thiab tswb kawg.Tsis tas li ntawd, Teem sijhawm 40 PVS los hauv Chav Kawm 125 fittings.
Raws li kev ntxiv nyiaj ntxiv rau lawv cov txheej txheem kev teeb tsa yooj yim, ob qho tib si tsis tshua muaj kev cuam tshuam-tiv taus thiab ruaj khov, tso cai rau lub neej ntawm tsib caug mus rau xya caum xyoo.Thiab tsis zoo li tooj liab, tus nqi ntawm ob qho tib si PVC thiab CPVC kav tsis nyob ntawm tus nqi lag luam.
PVC resin tuaj yeem ua tiav rau hauv ntau yam khoom yas.Nws tuaj yeem muab faib ua cov khoom muag muag thiab tawv raws li nws daim ntawv thov.Nws yog tsuas yog siv los tsim cov nplooj ntawv pob tshab, cov yeeb nkab fittings, daim npav kub, cov khoom siv ntshav, cov raj muag muag thiab tawv, daim hlau, qhov rooj thiab qhov rais.Profiles, zaj duab xis, cov khoom siv hluav taws xob rwb thaiv tsev, cable tsho, kev siv ntshav, thiab lwm yam.
PVC xav tau yog tsav los ntawm Kev Tsim Kho, Kev Ua Liaj Ua Teb, Ntim thiab Cov Khoom Siv Khoom Siv.Hauv kev lag luam hauv tsev PVC cob yog siv los tsim cov khoom tsis zoo thiab muag muag PVC.Kwv yees li ntawm 55% ntawm kev lag luam sib koom yog tuav los ntawm PVC Pipes & Fittings ntu ib leeg, lwm ntu suav nrog Zaj duab xis & Sheet, Cable Compound, Flexible hose, Khau, Profile, Flooring thiab Foam Board.Hauv kev lag luam hauv tsev ntawm PVC, resin feem ntau yog siv los tsim cov kav dej PVC.Kwv yees li ntawm 55% ntawm cov resin noj yog nyob rau hauv no sector ib leeg.Lwm cov kev lag luam suav nrog cov tawv tawv, khau, cov ntaub ntawv nruj thiab mos, lub vaj hose, qhov rais thiab qhov rooj thiab lwm yam. PVC hauv tsev muag ntim tau nce zuj zus ntawm tus nqi ntawm 5% ib xyoos twg.
