- Xyoob bioplastic nrog lub zog siab: 110 MPa thiab modulus ntawm 6,41 GPa.
- Ruaj khov siab tshaj 180 ° C thiab ua tiav los ntawm kev txhaj tshuaj, molding thiab machining.
- Ua kom tiav biodegradation hauv av hauv 50 hnub thiab rov ua dua nrog 90% tuav lub zog.
- Muaj cib fim los hloov cov khoom siv yas hauv ntau qhov kev lag luam.
Thaum muaj kev sib cav txog qhov kev cia siab ntawm cov roj los ua cov yas, Ib pab neeg tshawb fawb hauv Suav teb tau qhia txog cov khoom hloov pauv kev ua si: a high-performance xyoob yas uas cog lus tias yuav txo cov pov tseg thiab qhib cov ntawv thov kev lag luam tshiab.
Lub tswv yim tsis tuaj raws li kev sim sim yooj yim xav paub; Raws li nws cov ntawv tshaj tawm hauv Nature Communications, nws muaj sab saum toj-theem mechanical thiab thermal kev ua tau zoo, nyob ib sab ntawm accelerated biodegradation thiab siv tau zoo, tseem ceeb yam tseem ceeb rau nws tiag tiag saws nyob rau hauv lub lag luam.
Nws yog dab tsi thiab nws ua li cas
Tsim los ntawm Northeast Forestry University (Harbin), qhov no biomaterial ib feem ntawm lub xyoob cellulose, uas yaj nrog cov kuab tshuaj tsis muaj tshuaj lom neeg mus rau qib molecular thiab tom qab ntawd rov ua dua tshiab rau hauv ib qho chaw ntom ntom, muaj zog network.
Thaum lub sij hawm tus txheej txheem, cov kws tshawb fawb induce tswj chemical modifications uas pab txhawb lub reassembly ntawm chains, ua kom tiav cov qauv txiav txim nrog. ntau qhov txuas ntxiv thiab ruaj khov yas matrix.
Lub tswv yim "molecular engineering" no tso cai rau cov khoom khaws cia dav dav: Nws yog sib xws nrog cov txheej txheem kev lag luam xws li txhaj tshuaj, molding thiab machining.
Tsis zoo li "bamboo" composites raws li kev sib xyaw cov nroj tsuag fibers nrog cov tsoos resins, txoj kev loj hlob tshiab zam cov roj av-derived polymers thiab tseem ua tau zoo kawg li tsis kam.
Khoom: lub zog thiab ruaj khov tshaj li qub
Hauv kev sib piv cov khoom siv bioplastics dav dav, xws li PLA, thiab tiv thaiv kev siv cov yas, cov khoom siv xyoob tau pom. lub zog tensile ntawm 110 MPa thiab flexural modulus ntawm 6,41 GPa.
La thermal stability siab tshaj 180 ° C, ib qho chaw pib uas tso cai rau nws ua raws li qhov xav tau ntawm lwm cov bioplastics tsis ua haujlwm vim deformation lossis poob ntawm kev ua haujlwm.
Cov txiaj ntsig tseem cuam tshuam cov lus teb zoo ib yam hauv kev sim ntawm moldability thiab thermomechanical cwj pwm, tseem ceeb tsis rau ib feem kom tig tawm txoj cai thawj zaug ntawm cov kab ntau lawm.
Pab neeg no sau tseg tias thoob plaws cov txheej txheem ntsuas ntsuas, xyoob molecular yas sib npaug los yog surpassed rau ntau yam kev lag luam plastics thiab bioplastics tam sim no.
Biodegradation ceev ceev thiab kaw-loop recycling
Ib qho ntawm cov ntsiab lus sib txawv yog nws cov degradation: nyob rau hauv ntuj av cov khoom yog tag decomposes nyob rau hauv txog 50 hnub, deb ntawm 100 mus rau 1.000 xyoo uas petrochemical plastics yuav xav tau.
Tib lub sijhawm, cov txheej txheem tso cai rau ib kaw-loop recycling: Tom qab rov ua dua, nws khaws cia ib puag ncig 90% ntawm nws qhov pib lub zog, uas nyiam nws rov siv dua hauv kev siv tshuab. Qhov kev sib xyaw ua ke ntawm kaw-voj thiab biodegradability pab txhawb rau kev lag luam zoo dua qub, nrog tsawg khoom poob tom qab txhua qhov tig thiab tswj qhov kawg ntawm lub neej.
Kho cov txheej txheem ua haujlwm ntawm qhov kub thiab txias yuav pab tau txo cov emissions cuam tshuam, tsis muaj kev cuam tshuam qhov zoo ntawm qhov chaw los yog nruj me ntsis kam rau ua.
Muaj peev xwm siv tau hauv kev lag luam
Vim nws cov kev ntsuas kev ntsuas thiab thermal stability, cov bioplastic tshiab tuaj yeem nkag rau hauv txhaj tshuaj molding rau cov khoom uas xav tau rigidity thiab toughness.
Cov khoom siv tau muaj xws li cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, reusable ntim thiab qee yam khoom siv hauv tsheb lossis cov rooj tog zaum. Machining compatibility qhib lub qhov rooj rau precision xov thiab khiav luv luv yam tsis xav tau kev nqis peev loj loj hauv pwm.
Raws li kev txheeb xyuas kev lag luam-kev lag luam qhia los ntawm cov kws sau ntawv, lub cov nqi tsim khoom Lawv muaj kev sib tw piv rau cov khoom siv plastics thiab bioplastics uas ua lag luam niaj hnub no.
Rov ua dua tshiab raw khoom thiab muaj
Xyoob yog tsob ntoo ntawm kev loj hlob sai, nrog luv sau cycles thiab hais tias tsis xav tau tshuaj tua kab lossis chiv, uas txo cov kev cuam tshuam txog kev ua liaj ua teb.
Su Kev nplua nuj nyob hauv Asia thiab Latin America muab lub hauv paus rau cov qauv ua kom muaj zog thiab muaj txiaj ntsig zoo nyob rau theem hauv zos hauv kev lag luam nyob deb nroog txuas nrog xyoob luam tawm.
Los ntawm qhov tseem ceeb ntawm cov khoom noj tsis yog cellulose, qhov kev txhim kho no Nws zam kev sib tw nrog cov qoob loo npaj rau lub rooj thiab txo qhov siab ntawm hav zoov. siv rau pulp thiab ntawv, txhawb kev coj ua rau cog xyoob.
Zuag qhia tag nrho, cov txheej txheem nyiam cov kev hloov pauv deb ntawm fossil raw cov ntaub ntawv thiab txhawb cov qauv tsim tawm, ua raws li cov cai nruj dua ib puag ncig.
Cov kauj ruam technical nrog ib puag ncig cuam tshuam
Cov kws sau ntawv tau hais tias qhov kev vam khom rau petrochemical plastics tau ua rau muaj teeb meem pov tseg, yog li yuav tsum muaj kev xav tau. kev ua haujlwm siab thiab kev hloov pauv tias lawv tsis txi cov txiaj ntsig.
Nrog cov pov thawj pom nyob rau hauv kev sim thiab cov txheej txheem kev xeem, xyoob yas yog tshwm sim li tangible neeg sib tw rau cov ntawv thov uas ABS, polypropylene lossis polystyrene cuam tshuam loj yog tam sim no nyiam.
Muaj peev xwm degrade sai sai hauv av thiab, tib lub sijhawm, yuav rov siv tau zoo, txo qhov kev pheej hmoo ntawm tsub zuj zuj ntawm microplastics thiab macro pov tseg nyob rau hauv landfills thiab ecosystems.
Kev lag luam nplai validation thiab kev hloov kho ntawm formulations rau kev siv tshwj xeeb tseem yuav tsum tau ua, tab sis lub hauv paus scientific thiab txheej txheem twb qhia. kom loj hlob kom nyiam manufacturers.
Raws li cov ntaub ntawv, cov nroj tsuag-raws li biomaterial combines kev ua tau zoo, ncig thiab nkag mus rau cov khoom siv txuas ntxiv dua tshiab, ua rau nws ib qho kev xaiv zoo los hloov qee yam ntawm cov pa yas thiab txav mus rau kev tsim khoom huv.
Kuv yog ib tus neeg nyiam siv thev naus laus zis uas tau hloov nws txoj kev nyiam "geek" rau hauv txoj haujlwm. Kuv tau siv ntau tshaj 10 xyoo ntawm kuv lub neej siv cov cuab yeej siv thev naus laus zis thiab tinkering nrog txhua yam kev pab cuam tawm ntawm kev xav paub dawb huv. Tam sim no kuv tau tshwj xeeb hauv computer technology thiab video games. Qhov no yog vim ntau tshaj 5 xyoo kuv tau sau rau ntau lub vev xaib ntawm kev siv tshuab thiab kev ua si video, tsim cov ntawv uas nrhiav kom muab cov ntaub ntawv koj xav tau hauv hom lus uas txhua tus neeg nkag siab.
Yog tias koj muaj lus nug, kuv qhov kev paub yog los ntawm txhua yam ntsig txog Windows operating system nrog rau Android rau cov xov tooj ntawm tes. Thiab kuv txoj kev cog lus yog rau koj, Kuv ib txwm kam siv ob peb feeb thiab pab koj daws cov lus nug uas koj muaj nyob hauv lub ntiaj teb no hauv internet.