Barrier Technology Ntawm High Barrier Materials

Txhawm rau txhim kho qhov kev ua tau zoo ntawm cov khoom thaiv kev thaiv, cov txheej txheem hauv qab no feem ntau siv:
1. Multi-layer composite
Multilayer composite yog hais txog cov txheej txheem ntawm kev sib txuas ob lossis ntau cov yeeb yaj kiab nrog cov khoom sib txawv ua ke los ntawm qee cov txheej txheem. Nyob rau hauv txoj kev no, nyob rau hauv kev txiav txim rau kev nkag mus rau sab hauv ntawm lub ntim, lawv yuav tsum tau dhau los ntawm ob peb txoj kev ua yeeb yaj kiab thiab kev txhim kho cov kev ua tau zoo.
Txoj kev no muab cov txiaj ntsig zoo ntawm ntau daim nyias nyias los npaj cov ntaub ntawv nyias nyias nrog kev ua haujlwm zoo, thiab nws cov txheej txheem yooj yim.
Txawm li cas los xij, piv nrog cov ntaub ntawv muaj kev cuam tshuam loj heev, siv txoj hauv kev no los npaj cov yeeb yaj kiab nyias yog thicker, ua rau muaj teeb meem xws li npuas lossis tawg wrinkles uas cuam tshuam rau kev ua haujlwm tsis zoo, thiab muaj cov cuab yeej siv tau yooj yim thiab cov nqi siab dua.
2. Txheej txheej
Txheej txheej yog hais txog kev siv lub cev vapor deposition (PVD), tshuaj vapor deposition (CVD), atomic txheej deposition (ALD), molecular txheej deposition (MLD), txheej los ntawm txheej nws tus kheej-assembly (LBL), los yog magnetron sputtering deposition txheej txheem txhawm rau tso cov hlau oxides lossis nitrides rau ntawm cov khoom siv polymer, yog li tsim cov txheej txheem ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Txawm li cas los xij, cov txheej txheem no muaj teeb meem xws li cov txheej txheem siv sijhawm, cov khoom siv kim, thiab cov txheej txheem nyuaj, thiab kuj tseem tuaj yeem tsim cov teeb meem xws li pinholes thiab tawg thaum lub sijhawm ua haujlwm.
3. Cov khoom siv nanocomposite
Nanocomposite yog ib hom nanocomposite npaj los ntawm interpenetrating composite, nyob rau hauv-situ polymerization los yog sol gel txoj kev siv impermeable thiab loj nam piv flake nanoparticles. Qhov sib ntxiv ntawm cov ntawv zoo li nanoparticles tuaj yeem tsis tsuas yog txo qhov ntim feem ntawm polymer matrix nyob rau hauv lub cev kom txo cov solubility ntawm permeable molecules, tab sis kuj ncua txoj kev permeation ntawm permeable molecules, txo qhov diffusion tus nqi ntawm permeable molecules, thiab txhim kho qhov barrier. kev ua tau zoo.
4. Kev hloov kho saum npoo
Vim muaj kev sib cuag nrog ib puag ncig sab nraud, cov khoom siv polymer feem ntau cuam tshuam rau lawv cov adsorption nto, thaiv cov khoom, thiab luam ntawv.
Txhawm rau kom siv cov polymers zoo dua hauv lub neej niaj hnub, qhov saum npoo ntawm polymers feem ntau yog kho. Feem ntau suav nrog kev kho tshuaj deg, kho qhov chaw grafting, thiab kev kho ntshav plasma.
Hom qauv no yuav tsum tau yooj yim kom tau raws li cov kev xav tau, cov cuab yeej siv yooj yim, thiab cov nqi peev tsawg ib zaug, tab sis tsis tuaj yeem ua tiav kev ruaj ntseg mus ntev. Thaum qhov chaw puas lawm, qhov kev ua tau zoo ntawm kev thaiv yuav raug cuam tshuam loj heev.
5. Bidirectional ncab
Los ntawm biaxially stretching, polymer zaj duab xis tuaj yeem taw qhia nyob rau hauv ob qho tib si longitudinal thiab transverse cov lus qhia, kev txhim kho cov txheej txheem ntawm cov saw hlau molecular thiab ntim ntau nruj, ua rau nws nyuaj rau cov molecules me dhau los, yog li txhim kho cov khoom thaiv. Txoj kev no ua rau nyuaj rau kev npaj cov txheej txheem ntawm cov khoom siv hluav taws xob siab hauv cov yeeb yaj kiab polymer thiab ua rau nws nyuaj rau kev txhim kho cov khoom thaiv.