Polyvinyl chloride - yog dab tsi? Polyvinyl chloride ntau lawm technology thiab kev siv

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Yog tias koj txiav txim siab siv polyvinyl chloride hauv kev tsim kho lossis kho, nws yog qhov tseem ceeb uas yuav tsum paub ua ntej pib ua haujlwm. Cov khoom no belongs rau hluavtaws thermoplastic textures.

YPVC yam ntxwv

Nyob rau hauv cov xwm txheej ntawm cov nroj tsuag, ob hom PVC yog tsim, thawj zaug yog plasticized, thaum lub thib ob yog unplasticized. Nyob rau hauv rooj plaub tom kawg, tsis siv plasticizer. Sab nraud, PVC muaj daim ntawv ntawm cov hmoov dawb, uas tsis muaj ntxhiab tsw. Nws muaj lub zog siab zoo thiab dielectric zog. Yog tias koj txiav txim siab yuav polyvinyl chloride, nws yog dab tsi, koj yuav tsum paub. Nws tiv taus alkalis, ntxhia roj, acids thiab tsis yaj hauv dej. Kev tawg thiab o yog yooj yim los ntawm ketones, ethers, nrog rau cov tshuaj tsw qab thiab chlorinated hydrocarbons. Cov khoom yog resistant rau oxidation thiab yuav luag tsis hlawv. Polyvinyl chloride tsis muaj cov yam ntxwv zoo heev thaum tshav kub kub-resistant; thaum raug kub ntawm 100 degrees, nws pib decompose. Txhawm rau kom ua tiav cov cua sov ua haujlwm thiab txhim kho cov txiaj ntsig zoo, PVC raug rauCov teebmeem ntawm chlorination.

siv thaj chaw

Hnub no, polyvinyl chloride tau siv dav. Dab tsi yog qhov uas txhua tus tswv tsev thiab cov kws tshaj lij hauv kev tsim kho yuav tsum paub. Cov khoom siv no yog siv hauv tshuaj, hloov iav thiab roj hmab. Yog li, nws tuaj yeem tau txais cov khoom pov tseg. Vim nws cov tshuaj lom neeg ruaj khov thiab inertness, PVC tau txais kev muaj koob meej hauv cov lus hais. Cov khoom los ntawm nws muaj ntau haiv neeg thiab yooj yim los tsim, thiab pheej yig dua li cov khoom siv yav dhau los.

PVC kuj tseem siv hauv kev lag luam tsheb thauj mus los. Nws yog siv nyob rau hauv zus tau tej cov qhov rooj panels, armrests, raws li zoo raws li nyob rau hauv lub creation ntawm cable rwb thaiv tsev. Nws yog ua tsaug rau qhov no tias lub tsheb pib muaj lub neej ntev, uas tau nce los ntawm rau xyoo piv rau cov ntsuas yav dhau los. Txoj hauv kev no tau nce kev nyab xeeb ntawm kev thauj mus los, txij li nrog kev pab los ntawm PVC nws muaj peev xwm tsim cov airbags, nrog rau cov vaj huam sib luag tiv thaiv uas tuaj yeem tiv thaiv cov neeg caij tsheb los ntawm kev raug mob ntawm kev raug mob.

Kho thiab tsim

Xav txog polyvinyl chloride, nws yog dab tsi tuaj yeem pom hauv kab lus no. Cov khoom no yog siv niaj hnub no rau kev tsim qauv. Lub sijhawm no tau tshwm sim vim qhov tseeb tias cov cuab yeej siv niaj hnub no tso cai rau koj los tsim cov khoom siv PVC ntawm txhua yam duab. Yog li, nws muaj peev xwm tsim cov khoom sab hauv. Feem ntau, cov polymer no tuaj yeem pom hauv kev tsim kho. Los ntawm nws yog tauhnav-resistant, nruj, hnav cov khoom uas zoo heev ntawm kev tiv thaiv corrosion thiab tshuaj tua kab mob. Xws li cov khoom muaj npe nrov hauv kev tsim kho kuj yog vim muaj hluav taws kub nyhiab, cov khoom siv tsis yooj yim rau ignite, thiab thaum lub qhov kub thiab txias raug tshem tawm, nws yuav tsum tsis txhob hlawv thiab smoldering. Tias yog vim li cas cov khoom zoo li no tuaj yeem siv rau hauv cov chaw uas yuav tsum tau muaj kev tiv thaiv hluav taws ntau ntxiv. PVC cov khoom siv tau ruaj khov, ntau dua 75 feem pua ntawm cov kav dej ua los ntawm nws ua kom pom kev ua neej nyob rau ntau tshaj 40 xyoo.

Tsev tsim khoom

Tau txais polyvinyl chloride yog ua los ntawm txoj kev ntawm radical polymerization ntawm raw cov ntaub ntawv, uas yog vinyl chloride. Feem ntau siv nyob rau hauv kev lag luam yog txoj kev ncua kev kawm ntawv, qhov no yog vim lub fact tias nws muab kev kawm siab. Xws li polymerization yog nqa tawm raws li lub sijhawm ua haujlwm. Vinyl chloride, uas muaj nyob rau hauv tus nqi ntawm 0.02 - 0.05 feem pua ntawm cov dej hauv dej, yog siv los ua cov khoom tseem ceeb. Cov khoom siv raw yog rhuab mus rau 65 degrees, thiab tom qab ntawd ua rau cov nyhuv zoo sib xws kom tau txais cov khoom lag luam homogeneous. Polymerization tshwm sim hauv tee ntawm vinyl chloride. Thaum kawg, nws tuaj yeem tau txais cov ntxeem tau microgranules. Kev tsim khoom yog siab automated, thaum lub polymerization yog nqa tawm nyob rau hauv reactors nrog ib tug ntim tshaj 200 cubic meters. Tom qab ua tiav ntawm polymerization, qib ntawm vinyl chloride, uas los ntawm lub sijhawm noreacted, ncav cuag 90 feem pua. Cov ntsiab lus uas tsis tau siv yog raug tshem tawm, thaum PVC nws tus kheej yog sieved thiab qhuav nyob rau hauv cov huab cua kub. Tom qab ntawd, ntim yuav tshwm sim. Polyvinyl chloride, cov khoom uas tau piav qhia saum toj no, tau hloov pauv mus rau hauv cov yas yas lossis yas sib xyaw ntawm theem kawg.

YPVC kawg khoom

cov khoom siv PVC tuaj yeem hloov mus ua yas yas. Nws yog ib yam khoom tawv. Nws yog tus cwj pwm los ntawm lub zog txhua yam, tshuaj lom neeg thiab dej tsis kam. Ntawm qhov tsis zoo yog qhov cuam tshuam tsis zoo ntawm lub zog, tsis muaj kev tiv thaiv Frost thiab kev ua haujlwm tsis tseem ceeb. Raws li rau plasticizers, cov no yog cov khoom muag muag uas muaj cov elasticity tseem ceeb. Lawv kuj yog waterproof thiab roj resistant. Lawv tiv taus txhua yam ntawm cov kuab tshuaj organic.

Zaj lus

Polyvinyl chloride, los ntawm cov kav dej uas tau tsim hnub no, ua raws li ib qho ntawm cov khoom siv feem ntau ntawm cov yas. Ntiaj teb kev tsim khoom suav txog kwv yees li 17 feem pua ntawm tag nrho cov khoom tsim tawm ntawm cov yas, thiab nyob rau qib thib peb ntawm cov polymers. Cov khoom tsim los ntawm PVC tau pom lawv cov ntaub ntawv siv tau hauv ntau cov haujlwm ntawm kev lag luam, kev lag luam, kev lag luam hnyav, tshuaj thiab kev ua liaj ua teb. Niaj hnub no, cov qhov rais yas tau nruab rau hauv yuav luag txhua lub tsev, thiab cov khoom siv raws li cov lus piav qhia kuj tseem siv tau. Nws yog qhov nthuav dav uas qhia tau tias zoo heevCov yam ntxwv zoo ntawm cov khoom tau piav qhia saum toj no, uas muaj lub zog siab, tiv thaiv kev puas tsuaj rau sab nraud thiab cuam tshuam ntawm qhov sib txawv.