PVC vs PET vs Polycarbonate: Peb qhov sib piv qhov twg PVC poob

PVC yog cov lus teb raug ntau dua li lwm yam khoom siv hauv qhov no. Nws tsis yog lus teb zoo txhua lub sijhawm.

Feem ntau cov ntawv hauv qhov no tau sib cav tias PVC yog cov lus teb zoo. Qhov no ua qhov sib txawv, hauv peb qhov chaw tshwj xeeb, nrog cov lej.

Yog vim li cas tsis coj ncaj ncees. Nws yog tus neeg muag khoom uas tsuas yog pom zoo rau lawv tus kheej cov khoom tsis yog muab tswv yim, thiab cov neeg yuav khoom paub nws. Muaj cov ntawv thov uas PVC tsuas yog qhov tsis ncaj ncees lawm substrate, qhov twg tsis muaj kev xaiv qib yuav cawm tau nws, thiab qhov twg hais tias ntxov yuav cawm txhua tus neeg hauv ib xyoos ntawm kev sib cav txog cov khoom uas tsis tau mus ua haujlwm.

Peb ntawm cov ntawv thov raug them rau ntawm no. Tag nrho peb ua raws li qhov PVC tiag tiag yog, uas tau teev tseg hauv peb phau ntawv qhiaDab tsi yog qhov tseeb hauv daim ntawv PVC. Tsis muaj leej twg tuaj yeem tsim kho tam sim ntawd.

PVC tuaj txog hauv kev sib tham ntawm kev yuav khoom feem ntau raws li cov lus teb. Nws yog pheej yig, nws muaj, nws tshuab zoo thiab nws kav sab nraum zoov. Cov khoom no yeej muaj tseeb, thiab lawv yog vim li cas nws thiaj li dominates lub tsev cov khoom.

Qhov teeb meem nrog lub neej ntawd yog tias nws tsis raug tshuaj xyuas. Ib yam khoom tau raug xaiv vim nws tau xaiv lub sijhawm dhau los, thiab cov lus nug ntawm seb nws puas yog qhov zoo tshaj plaws tsis tau nug. Thaum ib qhov project ua tsis ncaj ncees lawm, qhov tsis ua hauj lwm feem ntau yog los ntawm tus neeg xa khoom lossis cov khoom siv, thaum qhov teeb meem tiag tiag yog qhov sib txawv ntawm cov polymer yuav tsum tau ua los ntawm qhov pib.

Ob tus neeg sib tw yog PET thiab polycarbonate. Tsis yog kab txawv. Ob leeg yog cov khoom siv, ob qho tib si muaj dav, thiab ob leeg yeej PVC txiav txim siab hauv cov ntawv thov tshwj xeeb. Kev sib piv rau lawv yog qhov muaj txiaj ntsig ntau dua li kev sib piv nrog acrylic lossis ACM, vim tias cov no yog ob qho khoom siv uas tus neeg yuav khoom feem ntau yuav muab hloov.

Qhov no yog qhov sib piv PVC poob feem ntau decisively, thiab nws kuj yog ib tug feem ntau misdescribed.

Qhov ib txwm framing yog PVC yog ib qho nyuaj rau rov ua dua. Qhov ntawd yog qhov tseeb tab sis nws nco lub ntsiab lus. PET muaj lub voj voog rov ua dua tshiab, nrog cov khoom siv los ntawm cov fwj ntim rov qab rau hauv lub raj mis tshiab. PVC tsis muaj qhov sib npaug ntawm qhov ntsuas, thiab nws cov nqi rov qab yog tsawg. Tab sis qhov teeb meem sharper tsis yog PVC tus kheej rov qab. Nws yog qhov PVC ua rau txhua tus neeg.

PET yog ua tiav ntawm qhov kub siab txaus kom degrade PVC. Thaum cov kab mob PVC muaj nyob rau hauv PET cov kwj dej rov ua dua, nws tawg thiab tso tawm hydrogen chloride, uas tawm tsam PET nws tus kheej, hloov nws cov khoom thiab corrodes cov khoom siv. Qhov laj thawj yog tias cov khoom siv rov ua dua tshiab kho PVC ua cov kab mob kom raug kuaj pom thiab tsis lees paub ntau dua li cov khoom yuav tsum tau rov qab los, thiab cov feem me me tuaj yeem ua tau.

PVC tus kheej rov ua dua tshiab tsis yog xoom. Lub qhov rais profiles thiab cov yeeb nkab tau rov qab los hauv cov txheej txheem tsim hauv ntau lub khw, vim tias cov no loj, sib xws, txheeb xyuas cov kwj deg. Dab tsi tsis muaj nyob yog txoj kev sib piv rau cov khoom sib xyaw lossis cov kab mob PVC, thiab cov txheej txheem qub txeeg qub teg hauv cov khoom qub ua rau nws nyuaj ntxiv. Cov lus nug stabilizer, thiab vim li cas nws txawv ntawm kev ua lag luam, yog them rau hauv peb daim rautxhuas thiab calcium{0}}zinc stabilizer systems.

Lub neej ua haujlwm ntev ncua cov lus nug rov ua dua. Nws tsis teb nws, thiab nce cov lus nug yog nug ntawm specification es tsis yog ntawm pov tseg.

Yog vim li cas yog cov tshuaj chlorine, thiab qhov no yog ib feem uas tsis tuaj yeem tsim kho tam sim ntawd. Chlorine yog kwv yees li ib nrab ntawm PVC los ntawm qhov hnyav. Nws muaj nyob rau hauv txhua qib, ntawm txhua tus nqi taw tes, los ntawm txhua tus neeg muag khoom. Tsis muaj kev hloov pauv hloov tshem tawm, uas txhais tau tias tsis muaj qib ntawm PVC tsis muaj kev pheej hmoo kis kab mob tau piav qhia saum toj no.

Qhov no ua rau qhov kev poob qis dua li qhov ua tau zoo. Qhov twg ib qhov project tau rov ua dua cov ntsiab lus, txuas ntxiv lub luag haujlwm ntawm cov neeg tsim khoom, lossis cov saw hlau uas twb tau khiav PET lossis polyolefin rov qab kwj lawm, PVC yog cov khoom siv tsis raug thiab tsis muaj cov qauv ntawm nws ua qhov yog. Cov lus nug dav dav ntawm qhov kev rov ua dua tshiab hais txog cov khoom siv PVC txhais tau li cas yog nyob rau hauv peb daim ntawmseb PVC cov khoom siv hauv tsev yog rov ua dua tshiab, thiab cov txheej txheem teb rau kev tshuaj xyuas cov ntsiab lus rov ua dua tshiab hauv daim ntawv xa khoom tau teev tseg hauv peb phau ntawv qhiarecycled cov ntsiab lus hauv PVC ntawv.

Polycarbonate yog cov khoom siv los tuav ntawm qhov hnyav, thiab feem ntau qhov sib piv nws tsis nyob ze.

Tshaj tawm cov ntawv ceeb toom cuam tshuam rau qhov tsis hloov kho tsis zoo PVC zaum hauv qis kaum ntawm joules ib meter. Polycarbonate zaum ob peb puas mus txog cuaj puas, nyob ntawm qib thiab kev xeem. Qhov ntawd yog ib qho kev txiav txim ntawm qhov loj, thiab nws yog qhov sib txawv txaus uas nws muaj sia nyob txhua qhov sib txawv tsim nyog hauv txoj kev sim.

Qhov qis - kab kub yog tsim nyog nyob rau. Kev cuam tshuam - hloov kho PVC tuav nws lub zog zoo kom txog thaum nws ncav cuag qhov hloov pauv kub los ntawm lub tshuab hloov kho, thiab tom qab ntawd poob nws sai sai. Tus cwj pwm ntawd, thiab yog vim li cas qhov kev ua tsis tiav zoo li tam sim ntawd, tau them rau hauv peb daimtxias- huab cua brittleness hauv PVC ntawv. Polycarbonate tsis muaj tib lub pob tsuas. Nws nyob twj ywm zoo hauv qab qhov kub thiab txias qhov twg PVC ua glassy thiab nquag tawg.

Kub qhia ib zaj dab neeg zoo sib xws. Rigid PVC deflects nyob rau hauv load qhov chaw nyob rau hauv cheeb tsam ntawm xya caum degrees. Polycarbonate tswj roughly ob qhov ntawd. Rau txhua yam uas yuav tsum tuav nws cov duab hauv qhov kub, lossis cuam tshuam thaum kub, qhov kev xaiv tsis nyob ze.

Qhov twg ib feem yuav tsum nqus los yog tuav nws cov duab hauv qab cua sov, qhov kev xaiv cov khoom raug txiav txim siab ua ntej kev sib tham ntawm tus nqi.

Polycarbonate tsis yog tsis muaj qhov tsis muaj zog, thiab lawv tseem ceeb hauv kev ua haujlwm sab nraum zoov. Nws yellows nyob rau hauv qhov raug ultraviolet tshwj tsis yog tias nws nqa cov txheej tiv thaiv, thiab nws raug tawm tsam los ntawm alkalis, uas txwv tsis pub nws tawm ntawm ntau qhov chaw nyob hauv PVC. Nws kuj khawb tau yooj yim dua li nws tus nqi qhia. Cov lus ceeb toom no tsis hloov qhov cuam tshuam thiab qhov ntsuas kub, tab sis lawv piav qhia vim li cas polycarbonate tsis yog cov khoom siv zoo dua los hloov txhua qhov chaw.

Tsis yog, tsis yog nyob rau hauv thicknesses lub tsev cov khoom yog ua nyob rau hauv.

Cov lus teb no ua rau tib neeg xav tsis thoob, vim tias nyias PVC zaj duab xis yog pob tshab tiag tiag thiab siv rau hauv ntim. Qhov tsis meej pem yog los ntawm kev xav tias cov khoom ntsuas. Tsis yog. Clarity nyob rau hauv ib tug polymer nyob ntawm seb lub teeb uniformly dhau los ntawm nws, thiab txhua yam nyob rau hauv cov khoom uas txawv nyob rau hauv refractive index los ntawm lub puag ncig matrix yuav tawg lub teeb ntawd.

PVC lub tsev cov khoom xav tau stabilizers rau thermal ua, cuam tshuam kev hloov kho rau toughness, lubricants rau extrusion, thiab feem ntau xim rau cov tsos. Txhua tus ntawm cov no yog cais theem dispersed los ntawm cov polymer, thiab txhua tus scatters lub teeb. Nyob rau hauv ib zaj duab xis nyias muaj qhov sib piv ob peb cov xwm txheej tawg raws txoj kev teeb. Nyob rau hauv ib lub rooj tsavxwm ntawm ob peb millimeters muaj ntau, thiab cov nyhuv cumulative yog opacity.

Opacity ntawm thickness tsis yog qhov kev txwv ntawm kev tsim khoom zoo. Nws yog qhov tsim nyog ntawm cov khoom siv ntxiv uas cov khoom xav tau txhawm rau ua haujlwm sab nraum zoov.

Qhov kev sim ua tau yooj yim. Yog tias daim ntawv thov yuav tsum tau pom los ntawm, PVC yog qhov tsis ncaj ncees lawm substrate thiab qhov kev txiav txim siab nyob nruab nrab ntawm ob. Yog tias nws tsuas yog xav tau saib kom huv thiab zoo ib yam, PVC ua qhov ntawd zoo kawg nkaus ntawm ib feem ntawm tus nqi.

Kev poob tsis tshua tuaj txog ib zaug. Cov ntawv thov uas PVC yog qhov tseeb cov lus teb tsis yog feem ntau yog cov uas ob lossis peb ntawm cov kev cai no tshwm sim ua ke.

Cov ntawv thov uas PVC yog cov lus teb kom yog feem ntau yog cov uas ua haujlwm ntev, tshuaj tiv thaiv lossis tus nqi yog qhov kev txwv tsis pub tshaj qhov pom lossis rov qab los.

Tau lees paub peb qhov kev sib piv, nws tsim nyog ua kom pom tseeb sib npaug ntawm sab nraud, vim tias tsis muaj ib qho ntawm peb qhov kev xaiv yog kev txhim kho dav dav.

Nplaim kev ua tau zoo yog lwm qhov kev yeej, thiab nws tsim nyog piav qhia ntau dua li tsuas yog hais. PVC yog qhov pib ntawm tus kheej - tua vim nws cov ntsiab lus chlorine. Qhov ntawd yog qhov txawv ntawm cov khoom siv polymers thiab nws yog vim li cas PVC tuav txoj haujlwm hauv kev siv hluav taws xob uas yuav txwv tsis pub mus rau polyolefin. Peb qhov ntawmkos npe rau kev sib piv substratenpog qhov uas tseem ceeb rau lwm cov ntaub ntawv.

Qhov tseeb ib leeg yog cov ntsiab lus ncaj ncees tshaj plaws ntawm cov khoom muaj. PVC qhov zoo thiab nws lub luag haujlwm tseem ceeb yog los ntawm tib lub atom, uas yog vim li cas peb qhov kev poob hauv tsab xov xwm no tsis tuaj yeem ua haujlwm tam sim ntawd thaum cov yeej tau khaws cia. Tus neeg muag khoom uas thov txwv tsis pub yog piav qhia txog lwm yam polymer lossis tsis tau xav txog nws.

Txoj kev ua tau zoo yog txhawm rau txheeb xyuas qhov kev txwv tsis pub ua ntej lwm yam kev sib tham.

Txhua daim ntawv thov muaj ib qho kev xav tau uas, yog tias tsis ua tiav, ua rau cov khoom tsis muaj nqis. Txhua yam yog qhov nyiam. Txiav txim siab seb qhov twg yog, thiab cov lus nug ntawm cov khoom feem ntau teb nws tus kheej yam tsis tas yuav sib piv cov ntxhuav.

Qhov twg tsis muaj ib qho ntawm plaub siv, PVC feem ntau yog cov lus teb raug thiab kev lag luam, thiab cov seem ntawm cov koob no muaj los pab qhia nws kom raug. Qhov sib txawv ntawm qhov tseem ceeb yog nyob nruab nrab ntawm cov khoom siv uas tsis tsim nyog rau ib daim ntawv thov tshwj xeeb thiab cov khoom siv uas yog qhov kev xaiv tsis zoo. PVC tsis yog qhov thib ob. Nws yog qee zaus thawj zaug, thiab paub thaum twg muaj txiaj ntsig ntau dua li paub tseeb tias nws tsis yog.

Feem ntau cov ntawv thov hauv qhov no yog txiav txim siab ntawm tus nqi, durability thiab tshuaj tsis haum. Hauv cov no, PVC tsis poob rau ib yam dab tsi.

Yog vim li cas los sau qhov no yog qhov rov qab qhov xwm txheej yog qhov ntau thiab kim. Tus neeg yuav khoom xaiv PET lossis polycarbonate xav tias nws yog qhov kev hloov kho dav dav, tom qab ntawd pom tias cov khoom yellows sab nraum zoov, los yog tawg hauv ib puag ncig alkaline, lossis raug nqi plaub npaug ntawm txoj haujlwm xav tau. Txhua lub polymer yog cov lus teb zoo tshaj plaws rau cov lus nug sib txawv, thiab tsuas yog qhov yuam kev tiag tiag yog teb qhov tsis ncaj ncees rau lub hom phiaj.