Ua ntej tshaj plaws, lubmultilayer co-extrusionResistance diaphragm yog ib zaj duab xis yas.Hauv kev lag luam ntawm cov khoom yas, peb feem ntau yog xa mus rau cov khoom yas tiaj tus nrog tuab tsawg dua 0.2 hli raws li cov yeeb yaj kiab yas, cov tuab ntawm 0.2 thiab 0.7 hli raws li cov ntawv yas thiab cov thickness ntau dua 0.7 hli raws li daim hlau.Multilayer co-extrusion kuj diaphragm yuav tsum muaj qee yam roj barrier kev ua tau zoo.Qhov thaiv ntawm no yog hais txog kev tiv thaiv lub peev xwm ntawm cov khoom yas (cov thawv, cov yeeb yaj kiab) tiv thaiv cov pa roj molecular me me thiab cov ntxhiab tsw.Peb feem ntau siv cov roj permeability los ntsuas qhov permeability ntawm cov khoom yas.PE, PP thiab lwm yam yas yas muaj cov roj permeability loj, uas yog, cov roj permeability tsis zoo, thaum PA, PVDC, EVOH thiab lwm yam ntaub ntawv resin muaj cov roj permeability tsawg dua li cov yas, thiab cov roj permeability zoo.Yog li ntawd, peb feem ntau hu ua tusmultilayer coextrusion zaj duab xismuaj tsawg kawg yog ib qho khoom siv ntawm PA, PVDC thiab EVOH raws li cov txheej txheem coextrusion tsis kam diaphragm.PE, PA, TIE, EVOH thiab lwm yam resins tuaj yeem siv rau lub tshuab nqus tsev ntawm cov khoom noj siv mis, jam, khoom noj nqaij, thiab lwm yam.
Multilayer co-extruded filmsfeem ntau txais ABCBA5 txheej symmetrical qauv, nrog PA lossis EVOH ua txheej txheej txheej thiab polyethylene li thermal seal txheej.Cov nplaum nplaum yog siv los cais cov txheej txheem tsis sib txuas thiab thermal seal txheej.PA los yog EVOH yog qhov tsis tshua muaj siab rau cov av noo, tiv thaiv los ntawm polyethylene txheej, thiab nws cov pa oxygen barrier ua tau zoo tau tsim tiav.Nyob rau hauv dav dav, tus qauv ntawmmultilayer co-extruded zaj duab xisnyob ntawm qhov yuav tsum tau ua ntawm cov yeeb yaj kiab.Ntawm qhov chaw ua tau raws li cov txheej txheem yuav tsum tau ua, kev sib xyaw ntawm cov polymers sib txawv tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov khoom ntim khoom xws li kev thaiv, cua sov sealing, lub cev muaj zog, thermal puncture, ib puag ncig adaptability, cov yam ntxwv thib ob thiab kev txuas ntxiv ntawm kev cia thiab txee lub neej.Los ntawm kev xav ntawm kev ua haujlwm, kev sib xyaw ntawm tsib polymers yog txaus.Txawm li cas los xij,co-extruded composite zaj duab xisnrog xya, cuaj, kaum ib lossis ntau txheej tau siv rau hauv kev ua lag luam uas ua rau nws muaj kev sib txawv thiab kev loj hlob sai.Cov qauv tsim ntawm co-extruded zaj duab xis yog maj mam ua kom tiav lub xeev zoo tagnrho ntawm kev sib koom ua haujlwm, thev naus laus zis, nqi, kev tiv thaiv ib puag ncig, kev nyab xeeb thiab kev ua haujlwm theem nrab.
1. Cov nqi sib piv
Siv cov polymers pheej yig dua rau ntawm qhov chaw es tsis txhob siv cov khoom kim heev tuaj yeem txo cov nqi ntawm cov khoom thiab muaj kev ua haujlwm kub-sealing thiab siab noo noo tsis kam ntawm ionic saw polymers.Rau cov ntaub ntawv nrog tib lub teeb meem thiab kub-seal-muaj peev xwm 7-txheej co-extrusion cua tshuab yog ntau yig dua 5-txheej zaj duab xis.
2. Kev thaiv
Siv ob lub polymers sib txawv es tsis txhob siv ib qho polymer ntawm txheej txheej barrier tuaj yeem txhim kho nws cov khoom thaiv.Piv txwv li, kev sib xyaw ua ke ntawm EVOH txheej thiab cov khoom siv nylon tuaj yeem tsis tsuas yog tswj tau qhov kev nkag mus ntawm PA, tab sis kuj ua kom lub zog ntawm EVOH thiab txhim kho qhov tawg ntawm EVOH vim tias EVOH txheej yog sandwiched ntawm ob txheej ntawm PA amine, ua rau nws. ib zaj duab xis nrog siab barrier, thaum lub tsib-txheej co-extrusion zaj duab xis tsis tuaj yeem ua tiav.Tus nqi ntxiv ntawm EVOH tuaj yeem ntxiv rau tag nrho cov kev siv ntawm cov qauv.Cov pa oxygen kis tau tus nqi ntawm tsib-txheej co-extruded zaj duab xis nrog 20% PA qauv yog 3.5 units, tab sis nyob rau hauv tib lub sijhawm, tus nqi sib kis ntawm EVOH ntxiv rau xya-txheej zaj duab xis yog 0.13 units.
3. Kev tiv thaiv tawg
Cov khoom ntawm PA co-extruded films nrog ntau txheej tuaj yeem txhim kho.Piv txwv li, kev siv cov nplaum nplaum ntxiv tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov yeeb yaj kiab los ntawm kev ua kom cov dej vapor barrier nyhuv ntawm zaj duab xis.Lwm qhov zoo dua uas tau txais tib lub sijhawm yog tias nws tuaj yeem ua rau cov yeeb yaj kiab muag muag, hnov zoo thiab muaj kev sib tw zoo.
Nrog rau kev nce qib ntawm cov thev naus laus zis thev naus laus zis thev naus laus zis, cov polymers tshiab nrog cov khoom siv lub cev thiab cov cuab yeej siv tau dav siv los ua kom tau raws li cov kev xav tau ntawm kev ntim khoom.Cov haujlwm thiab cov qauv ntawmmultilayer co-extruded composite substrate zaj duab xisyuav muaj kev yooj yim dua thiab kev lag luam.Los ntawm kev siv thiab kev txhim kho cov cuab yeej molding thiab thev naus laus zis, ua ke nrog kev tsim tshwj xeeb thiab ua tau zoo ntawm cov qauv sib xyaw, cov tuam txhab ua yeeb yaj kiab yuav muaj lub luag haujlwm hloov pauv hauv kev nrhiav thiab kev xav ntawm cov tswv yim ntawm ntau hom kev ntim khoom, kev tsim nyog ntawm cov qauv ntim, thiab maximization ntawm ntim cov txiaj ntsig.
Post lub sij hawm: Apr-17-2023