PVC yuav hloov los ntawm PU hauv Txoj Kev Loj Hlob Ntawm Ib puag ncig-phooj ywg Artificial Tawv.

Nrog rau txoj kev loj hlob ntawm kev lag luam, tawv tawv plays lub luag haujlwm tseem ceeb hauv tib neeg lub neej txhua hnub, thiab cov tawv nqaij uas pheej yig thiab zoo tshaj plaws kuj tau dhau los ua cov khoom nyiam tshaj plaws.Tam sim no kev lag luam tawv tawv tau tsim los ua ib qho ntawm cov kev lag luam tseem ceeb hauv kev lag luam khoom siv niaj hnub.Tam sim no, PVC tawv tawv nyob hauv txoj haujlwm tseem ceeb, tab sis vim tias huab cua permeability thiab hygroscopicity ntawm PVC tawv tawv kuj tsis zoo, nws txoj kev loj hlob tau txwv nyob rau xyoo tas los no. Pu tawv tau maj mam hloov cov tsoos PVC tawv tawv.

Thaum xub thawj, cov khoom siv tseem ceeb ntawm cov tawv tawv yog PVC, tab sis nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, tib neeg pom tias muaj ntau yam teeb meem loj hauv kev siv PVC, thiab cov pa phem kuj tseem ceeb heev, tshwj xeeb tshaj yog tom qab raug rau cov khoom siv. Lub hnub yuav tsim cov pa phem, ua rau mob qog noj ntshav.Txawm tiaslub xeev tsis tau txwv tsis pub cov khoom siv PVC rau lub sijhawm tam sim no, nrog kev maj mam nce ntawm lub tswv yim ntawm kev tiv thaiv ib puag ncig thiab kev txhim kho txuas ntxiv ntawm qib kev, ntau lub tuam txhab tawv tawv hauv tsev tau paub txog qhov teeb meem no thiab txuas ntxiv txhim kho lawv cov thev naus laus zis, thiab PU uas hloov PVC tshwm. Estshwj xeeb tshaj yog nyob rau xyoo tas los no, qhov kev txwv ntau dua ntawm kev txhim kho PVC, tus naj npawb thiab nplai ntawm PVC cov nroj tsuag tsis zoo li yav dhau los.

PU tawv yog ib puag ncig zoo dua li PVC.Tam sim no, PU tuaj yeem siv los hloov cov khoom siv PVC.Ntau lub tuam txhab tsim khoom hauv tsev tau pom daim ntawv thov ntawm PU tawv hauv tawv, siv cov cuab yeej siv siab heev los txo nws cov nqi tsim khoom thiab tsim cov saw hlau zoo meej.Nws tau nkag siab tias tseem muaj ntau yam khoom uas tseem siv PVC, tab sis cov lag luam no tau maj mam pib hloov mus rau kev tsim cov tawv PU.Nrog rau kev nrawm ntawm kev sib koom ua ke ntawm kev lag luam thoob ntiaj teb, qhov zoo ntawm cov khoom zoo thiab cov pa phem ntawm PU tawv yuav dhau los ua ntau thiab pom tseeb. Txhua yam ntawm cov khoom siv tawv PU tawv yuav txuas ntxiv mus rau kev lag luam. Txawm hais tias PU cov khoom yuav muaj lub sijhawm hloov kho, nws yog ib qho kev tsis pom zoo rau kev tsim cov khoom siv tawv tawv kom thiaj li hloov tau cov khoom siv PVC hauv cov khoom tseem ceeb.

Txawm li cas los xij, tib neeg feem ntau xa mus rau cov khoom ntawm ob cov ntaub ntawv no ua tawv tawv. Txawm hais tias PVC thiab PU yog cov khoom siv tseem ceeb ntawm PVC, cov txheej txheem tsim khoom ntawm ob yam khoom no tsis yog tib yame. Tus nqi ntawm PU tawv yog ntau dua ob npaug ntawm PVC tawv, thiab tus nqi ntawm qee qhov tshwj xeeb PU tawv yog 3 npaug siab dua li ntawm PVC tawv. Txawm li ntawd los, qhov nyiaj tau los ntawm PVC rau ntau xyoo ntawm kev sib tw thiab kev loj hlob yog tam sim no nqaim heev, thiab some ntau yam muaj tsuas yog ob peb xees lossis txawm tias ob peb xees ib 'meter'.Qhov tseeb, hauv txoj kev xav, nrog kev txhim kho txuas ntxiv ntawm kev lag luam thiab kev txhim kho txuas ntxiv ntawm cov thev naus laus zis, PU yuav tsum muaj tus nqi ntau dua li PVC yav tom ntej.

Nyob rau hauv cov nqe lus ntawm kev pab cuam lub neej, dav pu tawv tsuas yog muab pov tseg nrog 4Mel 5 zaug; PVC tawv muaj lub neej ua haujlwm ntev, yog li kev lag luam tawv tawv tam sim no tseem yog tus thawj coj ntawm PVC, tom qab tag nrho, cov khoom tshiab xav tau lub sijhawm tsis zoo los tshem tawm cov khoom qub.