Ob peb hnub dhau los, University of Washington Professor Aniruddh Vashisth Tsis zoo li ib txwm cofrp, uas tsis tuaj yeem kho thaum puas tau, cov ntaub ntawv tshiab tuaj yeem kho tau ntau zaus.
Thaum tswj hwm cov cuab yeej siv cov khoom siv tsoos, tshiab Thaum tshav kub kho tuaj yeem kho cov qaug zog ntawm cov khoom siv, thiab tseem siv tau los rhuav tshem cov khoom thaum nws yuav tsum tau siv dua tshiab ntawm lub voj voog pabcuam. Txij li thaum cov tsoos CFRP tsis tuaj yeem rov ua dua tshiab, nws yog ib qho tseem ceeb los tsim cov ntaub ntawv tshiab uas tuaj yeem siv hluav taws xob siv hluav taws xob lossis xov tooj cua sov.
Xib fwb vashisth tau hais tias cov khoom cua sov tuaj yeem ncua ntev ncua kev laus cov txheej txheem kev laus ntawm cov CFR tshiab tshiab. Kev hais nruj me ntsis, cov ntaub ntawv no yuav tsum tau hu ua Carbon Fiber Reinfored vitrimers (VCFRP, fiber ntau cov fiber cuam vitrimers). Iav polymer (cov vitrimers) yog cov khoom siv polymer tshiab uas tau ua los ntawm cov qauv kev sib txuas nrog cov qauv sib txuas, thiab tib lub sijhawm ua kom muaj zog ua ke Yuav tuaj yeem kho nws tus kheej thiab rov kho dua zoo li thermoplastic polymers.
Hauv kev sib piv, cov khoom siv roj carbon fiber ntau yog cov khoom siv roj carbon fiber ntau ntxiv: thermoset lossis thermopastic raws li cov qauv resin sib txawv. Thermogosetting Composite cov ntaub ntawv feem ntau muaj epoxy cob, cov tshuaj lom neeg uas tuaj yeem sib sau ua ke rau ib lub cev. Thermoplastic Composites muaj cov khoom muag thermoplastic uas tuaj yeem ua rau muaj zog thiab rov hais dua lub zog thiab tawv ncauj ntawm cov khoom.
Cov kev sib txuas lus rau hauv VCFRP tuaj yeem sib txuas, disconnected, thiab rov ua kom tau txais "av nruab nrab ntawm thermoset thiab thermopicastic cov ntaub ntawv. Cov kws tshawb nrhiav phiaj xwm ntseeg tias cov kev siv vitrimers tuaj yeem hloov kho rau cov khoom siv thermosetting thiab zam kev sib txuam ntawm thermosetting sib xyaw hauv cov av qias neeg. Cov kws tshawb nrhiav ntseeg tias VCFRP yuav dhau los ua cov ntaub ntawv tseem ceeb los ntawm cov khoom siv sib xyaw ua ke, thiab yuav muaj kev cuam tshuam nrog tag nrho lub neej, kev ntseeg tau, kev nyab xeeb, kev nyab xeeb, thiab kev saib xyuas.
Tam sim no, cua tshuab cua tshuab yog ib qho ntawm cov chaw uas muaj kev siv CFR hloov yog loj, thiab rov qab muaj teeb meem hauv daim teb no. Tom qab tas sij hawm ntawm lub sijhawm pabcuam, ntau txhiab tus so haujlwm tau muab pov tseg hauv cov av khib nyiab, uas ua rau muaj kev cuam tshuam loj rau ib puag ncig.
Yog tias VCFRP tuaj yeem siv tau rau cov hniav kev tsim khoom, nws tuaj yeem rov ua dua tshiab thiab siv hluav taws xob yooj yim. Txawm hais tias tus hniav kho tsis tau kho thiab siv rov qab, tsawg kawg nws tuaj yeem decomposed los ntawm tshav kub. Cov khoom siv tshiab hloov pauv ntawm cov kab kev sib txawv ntawm thermoset composites ua lub neej voj voog, uas yuav yog ib kauj ruam loj ntawm kev loj hlob.
Yog tias VCFRP tuaj yeem siv tau rau cov hniav kev tsim khoom, nws tuaj yeem rov ua dua tshiab thiab siv hluav taws xob yooj yim. Txawm hais tias tus hniav kho tsis tau kho thiab siv rov qab, tsawg kawg nws tuaj yeem decomposed los ntawm tshav kub. Cov khoom siv tshiab hloov pauv ntawm cov kab kev sib txawv ntawm thermoset composites ua lub neej voj voog, uas yuav yog ib kauj ruam loj ntawm kev loj hlob.
Lub Sijhawm Post: NOV-09-2021
