Ob peb hnub dhau los, University of Washington tus xibfwb Aniruddh Vashisth tau luam tawm ib daim ntawv nyob rau hauv lub thoob ntiaj teb kev tso cai phau ntawv journal Carbon, thov hais tias nws tau ua tiav ib hom tshiab ntawm carbon fiber composite khoom.Tsis zoo li ib txwm CFRP, uas tsis tuaj yeem kho tau ib zaug puas lawm, cov ntaub ntawv tshiab tuaj yeem kho dua.
Thaum tswj xyuas cov khoom siv ntawm cov khoom siv ib txwm siv, CFRP tshiab ntxiv qhov zoo dua qub, uas yog, nws tuaj yeem kho dua nyob rau hauv qhov kev ua ntawm cov cua sov.Thaum tshav kub kub tuaj yeem kho txhua qhov kev puas tsuaj ntawm cov khoom siv, thiab tuaj yeem siv los decompose cov khoom thaum nws yuav tsum tau rov ua dua thaum kawg ntawm lub voj voog kev pabcuam.Txij li cov tsoos CFRP tsis tuaj yeem rov ua dua tshiab, nws yog ib qho tseem ceeb los tsim cov khoom siv tshiab uas tuaj yeem siv rov ua dua lossis kho siv lub zog thermal lossis xov tooj cua zaus cua sov.
Xibfwb Vashisth tau hais tias qhov chaw tshav kub tuaj yeem ncua sijhawm rau cov txheej txheem kev laus ntawm CFRP tshiab.Hais lus nruj me ntsis, cov khoom no yuav tsum hu ua Carbon Fiber Reinforced Vitrimers (vCFRP, Carbon Fiber Reinforced Vitrimers).iav polymer (Vitrimers) yog ib hom tshiab ntawm cov khoom siv polymer uas sib xyaw ua ke zoo ntawm cov thermoplastic thiab thermosetting plastics tsim los ntawm Fabkis tus kws tshawb fawb xibfwb Ludwik Leibler hauv xyoo 2011. Vitrimers cov khoom siv dynamic bond exchange mechanism, uas muaj peev xwm ua tau reversible chemical bond pauv nyob rau hauv ib tug dynamic yam. Thaum tshav kub kub, thiab nyob rau tib lub sij hawm tuav ib tug cross-linked qauv raws li ib tug tag nrho, yog li ntawd thermosetting polymers tuaj yeem kho tus kheej thiab reprocessed zoo li thermoplastic polymers.
Hauv qhov sib piv, feem ntau hu ua carbon fiber ntau cov ntaub ntawv yog carbon fiber reinforced resin matrix composite cov ntaub ntawv (CFRP), uas tuaj yeem muab faib ua ob hom: thermoset lossis thermoplastic raws li cov qauv sib txawv.Thermosetting composite cov ntaub ntawv feem ntau muaj epoxy resin, cov tshuaj bonds nyob rau hauv uas tuaj yeem sib sau cov khoom mus tas li rau hauv ib lub cev.Thermoplastic composites muaj cov thermoplastic resins uas tuaj yeem yaj thiab rov ua dua, tab sis qhov no yuav ua rau muaj kev cuam tshuam rau lub zog thiab qhov tawv ntawm cov khoom.
Cov ntawv cog lus tshuaj nyob rau hauv vCFRP tuaj yeem txuas nrog, txiav, thiab rov txuas dua kom tau txais "hauv nruab nrab" ntawm cov khoom siv thermoset thiab cov khoom siv thermoplastic.Cov kws tshawb fawb txog qhov project ntseeg tias Vitrimers tuaj yeem dhau los ua qhov hloov pauv rau cov thermosetting resins thiab zam kev sib sau ntawm cov thermosetting composites hauv cov chaw pov tseg.Cov kws tshawb fawb ntseeg tias vCFRP yuav dhau los ua kev hloov pauv tseem ceeb ntawm cov khoom siv ib txwm siv rau cov ntaub ntawv muaj zog, thiab yuav muaj kev cuam tshuam los ntawm tag nrho cov nqi ntawm lub neej, kev ntseeg siab, kev nyab xeeb, thiab kev saib xyuas.
Tam sim no, cua turbine hniav yog ib qho ntawm qhov chaw uas CFRP kev siv loj, thiab cov hniav rov qab ib txwm muaj teeb meem hauv daim teb no.Tom qab lub sijhawm ua haujlwm tas sijhawm, ntau txhiab tus neeg so haujlwm tau muab pov tseg rau hauv qhov chaw pov tseg hauv daim ntawv pov tseg, uas ua rau muaj kev cuam tshuam loj heev rau ib puag ncig.
Yog tias vCFRP tuaj yeem siv rau kev tsim cov hniav, nws yuav raug siv dua thiab rov siv dua los ntawm cov cua sov yooj yim.Txawm hais tias cov hniav kho tsis tuaj yeem kho thiab rov siv dua, tsawg kawg nws tuaj yeem decomposed los ntawm tshav kub.Cov khoom tshiab hloov pauv lub neej voj voog ntawm cov thermoset composites rau hauv lub voj voog lub neej, uas yuav yog ib kauj ruam loj rau kev txhim kho kom ruaj khov.
Yog tias vCFRP tuaj yeem siv rau kev tsim cov hniav, nws yuav raug siv dua thiab rov siv dua los ntawm cov cua sov yooj yim.Txawm hais tias cov hniav kho tsis tuaj yeem kho thiab rov siv dua, tsawg kawg nws tuaj yeem decomposed los ntawm tshav kub.Cov khoom tshiab hloov pauv lub neej voj voog ntawm cov thermoset composites rau hauv lub voj voog lub neej, uas yuav yog ib kauj ruam loj rau kev txhim kho kom ruaj khov.
Post lub sij hawm: Nov-09-2021