Thaum kawg ntawm lub neej iav Fibers tau hloov dua siab tshiab rau hauv Silicon Carbide! Lwm txoj hauv kev tshiab ntawm Recycling iav Fibers tau tsim tawm txawv teb chaws
iav fiber ntaureinforced plastics (GFRP) yog siv nyob rau hauv ntau yam kev siv, los ntawm aircraft Cheebtsam mus rau cua turbine hniav. Txawm li cas los, precisely vim nws robustness thiab versatility,iav fiberkuj nyuaj heev rau pov tseg. Yog li ntawd, feem ntau fiberglass pov tseg yog faus rau hauv qhov chaw pov tseg tom qab nws mus txog qhov kawg ntawm nws lub neej muaj txiaj ntsig.
Txhawm rau daws qhov teeb meem no, Rice University cov kws tshawb fawb thiab cov neeg koom tes tau tsim ib txoj hauv kev tshiab, lub zog txuag hluav taws xob uas hloov GFRP rau hauv silicon carbide, uas yog siv dav hauv semiconductors, sandpaper thiab lwm yam khoom. Kev tshawb fawb tau luam tawm nyob rau hauv phau ntawv journal Nature Sustainability.
"GFRP yog siv los ua cov khoom loj heev, thiab feem ntau peb xaus rau faus tag nrho cov qauv ntawm lub dav hlau los yog cov hniav ntawm cov cua turbine hauv qhov chaw pov tseg," James Tour, tus xibfwb ntawm chemistry thiab cov ntaub ntawv tshawb fawb thiab nanoengineering. ntawm Rice. "Kev pov tseg ntawm GFRP hauv txoj kev no tsis ruaj khov. Txog tam sim no, tsis muaj txoj hauv kev rov ua dua tshiab zoo."
1. GFRP Khib Nyiab
Nrog rau kev nce siab los ntawm cov koom haum tswj hwm los hloov kho thiab txhim kho cov txheej txheem rov ua dua tshiab ntawm lub neej kawg, muaj qhov xav tau tseem ceeb rau txoj hauv kev zoo dua los tswj GFRP pov tseg. Txawm hais tias qee tus tau sim txhim kho txoj hauv kev los kho GFRP siv kev tua hluav taws lossis kev rhuav tshem, Yi Cheng, tus kws tshawb fawb tom qab kws kho mob ua haujlwm hauv Tour Lab thiab cov tub ntxhais kawm qib siab ntawm Rice College, hais tias cov txheej txheem no tsis zoo vim tias lawv muaj peev xwm siv tau thiab ua rau ib puag ncig muaj kuab paug.
"Cov khoom no muaj cov yas rau ntawm fiberglass nto, thiab incinerating cov yas ua rau ntau cov pa phem," Cheng hais tias. ib puag ncig tus phooj ywg txoj kev los daws cov khoom no. "
2. Silicon carbide rau cov ntawv xuab zeb thiab semiconductors
Tull's lab twb tau tshaj tawm xov xwm rau kev tsim kho tshiab pov tseg thiab rov ua dua daim ntawv thov siv flash joule cua sov tshuab. Flash Joule cua sov yog ib qho cuab yeej siv hluav taws xob dhau los ntawm cov khoom siv hluav taws xob nruab nrab kom ua kom sov sai rau qhov kub thiab txias thiab hloov mus rau lwm yam khoom. ncig saib hais tias thaum nws kawm txog cov teeb meem cuam tshuam nrog kev ua GFRP los ntawm cov npoj yaig ntawm US Department of Defense's Advanced Research Projects Agency, nws xav tias hom turbo-cua sov no tuaj yeem hloov GFRP rau silicon carbide, uas yog dav siv hauv semiconductors thiab sandpaper. Peb twb paub lawm tias yog peb ua kom sov cov hlau chloride thiab carbon los ntawm flash-joule cua sov, peb tuaj yeem tau cov hlau carbides - thiab hauv ib qho kev ua qauv qhia, peb tau ua silicon carbide, "Tour hais tias. nrog rau cov txheej txheem los hloov GFRP rau hauv silicon carbide. "
Cov txheej txheem tshiab no grinds GFRP rau hauv kev sib xyaw ntawm cov yas thiab carbon; cov pa roj carbon ntau ntxiv yog tias tsim nyog los ua kom cov khoom sib xyaw ua hluav taws xob. Cov kws tshawb fawb tom qab ntawd siv cov hluav taws xob siab siv ob lub electrodes los tsa nws qhov kub thiab txias rau 1,600 ~ 2,900 degree. "Qhov kub siab txhawb kev hloov pauv ntawm cov yas thiab cov pa roj carbon monoxide rau silicon carbide," piav qhia Tour. "Peb tuaj yeem ua ob yam sib txawv ntawm silicon carbide, uas tuaj yeem siv rau ntau lub hom phiaj. Qhov tseeb, ib qho ntawm silicon carbides qhia tau zoo heev thiab muaj peev xwm. ntsuas kev ua tau zoo raws li cov khoom siv roj teeb anode. "
3. Scaling li tus nqi qis yog tab tom ua
Thaum qhov kev tshawb fawb thawj zaug no yog ib qho pov thawj-ntawm-lub tswv yim sim ntawm lub rooj ntev zaum hauv chav kuaj, Ncig saib thiab cov npoj yaig tau pib ua haujlwm nrog cov tuam txhab sab nraud los ntsuas cov txheej txheem rau kev siv dav dua. Recycling GFRP muaj tus nqi khiav hauj lwm tsawg dua $0.05 ib kilogram, uas yog pheej yig dua thiab ntau tus phooj ywg ib puag ncig zoo li incineration lossis dissolution. Nws yuav siv sij hawm thiab qee qhov kev tsim vaj tsev zoo los txhim kho txoj hauv kev tshiab no, tab sis Tour hais tias nws zoo siab tias nws lub chaw kuaj mob tuaj yeem tsim ib txoj hauv kev zoo los hloov GFRP pov tseg rau hauv silicon carbide.
