Cov kev lag luam muaj cov khoom lag luam nthuav dav, cov xaj tau ua rau tib lub sijhawm tseem ua rau cov khoom siv raw, tshwj xeeb yog PBAT, PBS tsis tshua muaj cov ntaub ntawv ntim hnab hauv 4 lub hlis, tus nqi yog li ntawd. Yog li ntawd, cov khoom siv pla nrog tus nqi ruaj khov tau nyiam saib xyuas.
Poly (Lactic Acid) (PLA), tseem hu ua Poly (Lactide), yog ib puag ncig-cov kua txhuv nplej siab, thiab tuaj yeem ua tiav kev ua phooj ywg ib puag ncig Cov khoom kawg, xws li CO2 thiab H2O.
Vim nws cov txiaj ntsig ntawm cov tshuab muaj zog, ua haujlwm yooj yim, muaj peev xwm siv tau ntev thiab siv tau cov zaub mov ntim, kev kho mob thiab lwm daim teb. Cov pla degradable straw tau txais cov kev mloog ntau tshaj plaws nyob rau xyoo tas los no.
Nyob rau hauv teb rau cov yas txiav npluav, daim ntawv straw tau siv dav hauv Suav teb. Txawm li cas los xij, cov khaub ncaws nplaum tau sib thuam rau lawv qhov kev xav tsis zoo. Ntau thiab ntau cov neeg tsim khoom lag luam pib xaiv PLA hloov cov ntaub ntawv los tsim cov hniav.
Txawm li cas los xij, txawm tias polylactricic acid muaj cov cuab yeej siv zoo, nws qhov qis qis ntawm so (feem ntau tsawg dua 10%) thiab cov khoom siv nruj tsis pub nws daim ntawv thov hauv cov quav.
Yog li ntawd, Pla Kev nyuaj dhau los ua kev tshawb fawb kub ntawm tam sim no. Hauv qab no yog qhov kev kawm tau tam sim no ntawm Pla Kev Tshawb Fawb Tawv.
Poly - Lactic acid (PLA) yog ib qho ntawm cov neeg muaj peev xwm tshaj biodegradable plastics. Nws cov ntaub ntawv raw yog los ntawm cov nroj tsuag txuas ntxiv ntxiv, pob kws, kev ua liaj ua teb los ntawm cov khoom, thiab lwm yam, thiab nws muaj zoo biodegradability. Pla muaj cov tshuab ua haujlwm zoo, zoo ib yam li polypropylene plastics, thiab tuaj yeem hloov pp thiab tsiaj yas hauv qee thaj teb. Meanwhile, Pla muaj zoo gloss, transparency, txhais tes xav thiab qee yam tshuaj tua kab mob
PA Ntau Lawm Lawm
Tam sim no, pla muaj ob txoj kev hluavtaws. Ib qho yog kev ua kom haum condensation polymerization, piv txwv li cov kua qaub lactic acid yog ncaj qha lub cev qhuav thiab ua kom sov hauv qab qhov kub thiab txias. Cov txheej txheem ntau lawm yog qhov yooj yim thiab tus nqi yog tsawg, tab sis cov molecular qhov hnyav ntawm cov khoom yog tsis ncaj, thiab cov ntaub ntawv thov cov txiaj ntsig yog qhov tsis zoo.
Lwm qhov yog Lactig nplhaib - Qhib polymerization, uas yog cov hom sib txuam.
Ua rau cov ntaub ntawv
PLA yog tus nyob ruaj khov nyob rau hauv chav tsev sov, tab sis yooj yim yooj yim rau hauv CO2 thiab dej hauv ib puag ncig kub me ntsis, cov kua qaub nyob ib puag ncig thiab microbial ib puag ncig thiab microbial ib puag ncig thiab microbial ib puag ncig thiab microbial ib puag ncig thiab microbial. Yog li, cov khoom siv PLA tuaj yeem siv nyab xeeb nyob rau hauv lub sijhawm siv tau thiab ua raws li kev tswj hwm ib puag ncig thiab ntim khoom.
Qhov cuam tshuam rau cov degradation pla muaj xws li molecular hnyav, micrient kub thiab av noo, pH nqi, ib puag ncig cov microorganisms.
PLA thiab lwm cov ntaub ntawv tuaj yeem cuam tshuam qhov nqi degradation.
Piv txwv li, pla ntxiv cov hmoov av ntoo lossis pob kws soj ntsuam cov fiber ntau tuaj yeem nrawm nrawm qhov kev ua kom muaj kev cuam tshuam.
Pla Barier Performance
Rwb thaiv tsev yog hais txog kev muaj peev xwm los tiv thaiv cov kev hla ntawm cov roj lossis dej vapor.
Cov cuab yeej teeb meem yog qhov tseem ceeb heev rau cov ntaub ntawv ntim khoom. Ntawm tam sim no, lub hnab yas depadable tshaj plaws ntawm kev ua lag luam yog cov khoom siv PBAT / PBAT COMPOSITE.
Cov khoom siv ntawm cov khoom muaj kev txhim kho PLA zaj duab xis tuaj yeem nthuav tawm daim ntawv thov teb.
Qhov cuam tshuam rau cov cuab yeej siv Pla cov cuab yeej teeb meem feem ntau yog suav nrog sab xis (cov qauv molecular thiab crystallization xeev) thiab cov av noo, av noo).
1. Cov cua sov cua sov yuav txo nws cov cuab yeej teeb meem, yog li PLA tsis haum rau cov khoom noj ntim khoom uas xav tau cua sov.
2. Ncab PLA nyob rau hauv qee qhov ntau tuaj yeem nce cov cuab yeej teeb meem.
Thaum lub tensile piv yog nce ntawm 1 txog 6.5, lub crystallinity ntawm Pla tau nce heev, yog li cov cuab yeej muaj kev txhim kho.
3. Ntxiv qee qhov thaiv kev (xws li av nplaum thiab fiber) rau PLA Matrix tuaj yeem txhim kho cov cuab yeej pla.
Qhov no yog vim tias lub barrier ntev txoj kev nkhaus ntawm txoj kev nkhaus ntawm cov dej los yog roj permeration cov txheej txheem rau cov qauv molecules me.
4. Txheej kev kho mob rau saum npoo ntawm PLA zaj duab xis tuaj yeem txhim kho cov cuab yeej teeb meem.
Lub Sijhawm Post: 17-12-21