Nyob rau hauv xyoo tas los no, nrog kev nce qib zuj zus thiab kev txhawb nqa ib puag ncig ntawm kev lag luam hauv teb chaws yas muaj kev lag luam muaj kev lag luam zoo rau kev txhim kho.
Tshiab biodegradable cov ntaub ntawv, coj los ntawm biodegradable plastics, uas yog qhov ua tau zoo tshaj plaws rau "dawb paug" ntawm cov ntaub ntawv tsis zoo rau tib neeg, los ua tib neeg ntau dua.
Tom ntej no, Kuv xav qhia qee cov ntaub ntawv biodegradable.
Pla
Polylactic acid (poly lactic acid pla) yog cov feem ntau cov kev siv roj av, uas tsis muaj nyob hauv cov xwm thiab feem ntau polymerized nrog lactic acid raws li cov khoom tseem ceeb.
Lub hauv paus ntsiab lus dav dav yog tias cov khoom muaj duab dab dej zoo nkauj rau cov glucose, thiab tom qab ntawd cov kab mob polylacued, thiab cov kab mob polylacuic yog cov tshuaj tua hluavtaws siab.
PBAT.
PBAT belongs rau thermoplastic biodegradable plastics. Nws yog copolymer ntawm butylene sawbipate thiab Butylene Terephthalate. Nws muaj cov yam ntxwv ntawm PBA thiab PBT. Nws tsis tsuas yog muaj kev sib tw zoo thiab elongation thaum tawg, tab sis kuj muaj lub tshav kub tsis kam thiab cuam tshuam. Tsis tas li ntawd, nws tseem muaj cov biodegradity zoo.
Ntawm lawv, cov ntaub ntawv raw xws li Butanediol, oxalic acid thiab tuaj yeem ua tau dav ua ntau yam, xws li kev txhaj tshuaj molding, tshuab moulding thiab lwm yam.
Ntawm tam sim no, cov khoom lag luam muaj roj siv rau ntawm cov nplai loj hauv kev ua lag luam tau hloov kho lossis sib xyaw, hauv PBAT yog siv nrog PLA. Piv txwv li, lub hnab yas biodegradable siv nyob rau lub ntsuas loj yog cov khoom siv sib xyaw ntawm PLA thiab PBat.
Kev sib piv ntawm cov ntawv thov nqes ntawm PBAT thiab PLA
PBS.
PBS yog hu ua polybutylene succinate. Nyob rau xyoo 1990, Showa Polymer Feeding thiab reaster nrog cov roj ntsha polychlemic los ntawm cov roj ntsha polyescol los npaj siab molecular phaus phaus polymers. PBS polyester pib nyiam qhov dav raws li hom tshiab ntawm biodegradable plastics. Piv nrog rau lwm yam tsoos griodegradable polyesters, PBS muaj qhov zoo ntawm cov nqi ntau lawm, qhov chaw kub tiv taus thiab cov tshuab cua zoo. Nws cov khoom siv raw tau tuaj yeem tau txais tsis tsuas yog los ntawm cov roj av cov peev txheej, tab sis kuj yog los ntawm cov peev txheej roj ntsha fermentation fermentation. Raws li cov xwm txheej uas roj thiab lwm cov khoom siv tsis-txuas ntxiv tau ua kom dhau los, cov xeeb ceem no muaj qhov tseem ceeb tshaj plaws.
Cov ntsiab lus, kev sib piv ntawm cov khoom muaj peev xwm ntawm PBS, PLS, PBAT thiab PH
Tam sim no, cov khoom siv ntawm feem ntau siv biodegradable plastics yog txawv. Pla muaj zoo transparency, glossiness, siab melting taw tes thiab lub zog, tab sis qis tensile todlightness thiab crystallinity. PBAT muaj cov yam ntxwv ntawm ob PBA thiab PBT, thiab muaj kev sib tw zoo thiab elongation thaum tawg. Tab sis nws cov dej vapor teeb meem thiab cov duab oxygen yog cov neeg pluag. PBS muaj cov dej ntws zoo, kub tsis kam thiab pib ua kom sov lub qhov rai, thiab muaj qhov kev ua tau zoo tshaj plaws hauv kev ua kom tsis pom zoo. Qhov kub deformation kub ntawm PBS yog ze rau 100c, thiab nws tuaj yeem siab dua 100c tom qab hloov kho. Txawm li cas los xij, PBS tseem muaj qee qhov shortcomings xws li tsawg melt lub zog thiab qeeb qeeb crystallization tus nqi. Nyob rau hauv cov nqe lus ntawm biodegrentability, pla degre degre degradation kev mob yog kev nruj ntau dua, PBS thiab PBAT yog yooj yim los ua degraded. Nws yuav tsum raug sau tseg tias biodegradation ntawm pla, PBS thiab PBAT tsis tuaj yeem tshwm sim nyob rau hauv ib puag ncig ntawm compost, av, dej thiab ua kom zoo nkauj.
Kom suav nrog, kev ua yeeb yam ntawm ib qho khoom siv raw ib zaug, tab sis tom qab cov khoom siv, nws tuaj yeem npog, textile, siv cov khoom siv Thiab yog li ntawd.
Lub Sijhawm Post: 20-12-22