Ob peb hnub dhau los, tus xibfwb Aniruddh Vashisth ntawm University of Washington tau tshaj tawm ib daim ntawv hauv phau ntawv xov xwm thoob ntiaj teb Carbon, hais tias nws tau ua tiav tsim ib hom khoom siv carbon fiber tshiab. Tsis zoo li CFRP ib txwm muaj, uas tsis tuaj yeem kho tau thaum puas lawm, cov khoom tshiab tuaj yeem kho tau ntau zaus.
Txawm hais tias tseem khaws cov khoom siv kho tshuab ntawm cov khoom siv ib txwm muaj, CFRP tshiab ntxiv qhov zoo tshiab, uas yog, nws tuaj yeem kho tau ntau zaus hauv qab qhov kub. Kub tuaj yeem kho txhua qhov kev puas tsuaj ntawm cov khoom siv, thiab kuj tseem siv tau los rhuav tshem cov khoom siv thaum nws xav tau rov ua dua tshiab thaum kawg ntawm lub voj voog kev pabcuam. Vim tias CFRP ib txwm tsis tuaj yeem rov ua dua tshiab, nws yog ib qho tseem ceeb kom tsim cov khoom siv tshiab uas tuaj yeem rov ua dua tshiab lossis kho tau siv lub zog thermal lossis cua sov zaus xov tooj cua.
Xibfwb Vashisth tau hais tias qhov chaw kub tuaj yeem ncua qhov kev laus ntawm CFRP tshiab mus tas li. Hais lus nruj me ntsis, cov khoom siv no yuav tsum hu ua Carbon Fiber Reinforced Vitrimers (vCFRP, Carbon Fiber Reinforced Vitrimers). Iav polymer (Vitrimers) yog ib hom khoom siv polymer tshiab uas muab cov txiaj ntsig ntawm thermoplastic thiab thermosetting plastics uas tau tsim los ntawm tus kws tshawb fawb Fabkis Xibfwb Ludwik Leibler hauv xyoo 2011. Cov khoom siv Vitrimers siv cov txheej txheem pauv pauv dynamic, uas tuaj yeem ua qhov kev pauv pauv tshuaj lom neeg rov qab tau hauv txoj kev dynamic thaum cua sov, thiab tib lub sijhawm tswj hwm cov qauv sib txuas ua ke, yog li cov thermosetting polymers tuaj yeem kho tus kheej thiab rov ua dua zoo li thermoplastic polymers.
Nyob rau hauv kev sib piv, cov khoom siv carbon fiber composite feem ntau hu ua carbon fiber reinforced resin matrix composite materials (CFRP), uas tuaj yeem muab faib ua ob hom: thermoset lossis thermoplastic raws li cov qauv resin sib txawv. Cov khoom siv thermosetting composite feem ntau muaj epoxy resin, cov tshuaj sib txuas uas tuaj yeem sib sau ua ke cov khoom siv rau hauv ib lub cev. Cov thermoplastic composites muaj cov thermoplastic resins mos mos uas tuaj yeem yaj thiab rov ua dua, tab sis qhov no yuav cuam tshuam rau lub zog thiab kev tawv ntawm cov khoom siv.
Cov tshuaj sib txuas hauv vCFRP tuaj yeem txuas, txiav tawm, thiab rov txuas dua kom tau txais "qhov chaw nruab nrab" ntawm cov khoom siv thermoset thiab thermoplastic. Cov kws tshawb fawb ntawm qhov project ntseeg tias Vitrimers tuaj yeem hloov pauv rau cov thermosetting resins thiab zam kev sib sau ua ke ntawm cov thermosetting composites hauv cov chaw pov tseg. Cov kws tshawb fawb ntseeg tias vCFRP yuav dhau los ua kev hloov pauv loj ntawm cov khoom siv ib txwm mus rau cov khoom siv dynamic, thiab yuav muaj ntau yam cuam tshuam rau lub neej tag nrho, kev ntseeg siab, kev nyab xeeb, thiab kev saib xyuas.
Tam sim no, cov hniav cua turbine yog ib qho ntawm cov cheeb tsam uas siv CFRP ntau, thiab kev rov qab tau cov hniav yeej ib txwm yog teeb meem hauv daim teb no. Tom qab lub sijhawm ua haujlwm tas, ntau txhiab tus hniav so haujlwm tau muab pov tseg rau hauv qhov chaw pov tseg hauv daim ntawv ntawm qhov chaw pov tseg, uas ua rau muaj kev cuam tshuam loj heev rau ib puag ncig.
Yog tias vCFRP siv tau rau kev tsim cov hniav, nws tuaj yeem rov ua dua tshiab thiab rov siv dua los ntawm kev ua kom sov yooj yim. Txawm tias cov hniav kho tsis tuaj yeem kho thiab rov siv dua, tsawg kawg nws tuaj yeem lwj los ntawm cua sov. Cov khoom siv tshiab hloov pauv lub voj voog ntawm cov thermoset composites mus rau hauv lub voj voog ntawm lub neej voj voog, uas yuav yog ib kauj ruam loj rau kev txhim kho kom ruaj khov.
Yog tias vCFRP siv tau rau kev tsim cov hniav, nws tuaj yeem rov ua dua tshiab thiab rov siv dua los ntawm kev ua kom sov yooj yim. Txawm tias cov hniav kho tsis tuaj yeem kho thiab rov siv dua, tsawg kawg nws tuaj yeem lwj los ntawm cua sov. Cov khoom siv tshiab hloov pauv lub voj voog ntawm cov thermoset composites mus rau hauv lub voj voog ntawm lub neej voj voog, uas yuav yog ib kauj ruam loj rau kev txhim kho kom ruaj khov.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-09-2021
