Cov pa roj carbon fiber ntau muaj cov yam ntxwv ntawm lub zog siab thiab lub teeb yuag, thiab cov khoom sib xyaw nrog polymer yog qhov tsim nyog rau kev lag luam aerospace, automotive kev lag luam, cua turbine hniav thiab cov khoom ua si.Txawm li cas los xij, cov ntaub ntawv sib xyaw no yuav ua rau muaj kev puas tsuaj loj yam tsis muaj kev ceeb toom, zoo ib yam li lub cev qhuav dej ntawm ceramics.

Tsis ntev los no, cov kws tshawb fawb los ntawm Oak Ridge National Laboratory thiab Virginia Tech thiab State University tau tsim cov txheej txheem thiab luam tawm nyob rau hauv Phau ntawv Journal of Composites Science thiab Technology.Los ntawm tsuas yog ntxiv nano-TiO2, nws tuaj yeem muab kev ceeb toom ntxov ntawm kev ua haujlwm tsis zoo.

Carbon fiber ntau cov ntaub ntawv, tshwj xeeb tshaj yog cov ntaub ntawv sib xyaw raws li epoxy resin, yog nquag delamination thaum daim ntawv cog lus ntawm fiber ntau thiab matrix tsis ua haujlwm.Thaum tsis muaj ib qho kev ceeb toom sab nraud, kev tawg tam sim ntawd tuaj yeem tshwm sim, uas txwv tsis pub muaj txiaj ntsig ntawm cov khoom sib xyaw no hauv kev siv cov qauv.Tib neeg tab tom tshawb nrhiav ntau txoj hauv kev los saib xyuas cov txheej txheem kev ncaj ncees ntawm cov pa roj carbon fiber ntau, xws li embedded piezoresistive cov ntaub ntawv hauv cov khoom, uas hloov kev tiv thaiv nrog strain.Piezoresistive cov ntaub ntawv tuaj yeem hloov kho txhua yam rau hauv cov teeb liab hluav taws xob, uas tuaj yeem tshawb pom los ntawm cov sensors los saib xyuas cov qauv kev noj qab haus huv ntawm cov khoom sib xyaw.

Cov kws tshawb nrhiav embed TiO2Nano titanium dioxidenanoparticles nyob rau hauv lub polymer txheej los yog sizing ntawm carbon fibers kom cov piezoresistive cov ntaub ntawv uniformly faib thoob plaws hauv lub composite khoom.Sizing feem ntau yog siv rau carbonized carbon fiber, yog li nws yog ib qho yooj yim rau txheej txheem thiab siv thiab ua ke nrog cov matrix, thiab thaum kawg tsim strain sensing peev xwm nyob rau hauv cov txheej txheem no.Thaum lub siab raug tshem tawm, qhov tsis kam yog xoom, thiab thaum lub siab tsim tawm, qhov kev tawm tsam nce.Tau kawg, tus nqi ntawm TiO2 nanoparticles ntxiv yuav tsum tau tswj hwm, ib qho kev faib ua feem ntau yuav txo tau lub zog ntawm cov khoom sib xyaw, thiab kev sib ntxiv kom zoo yuav txhim kho qhov kev ua haujlwm damping (kev poob siab thiab kev ua haujlwm tsis zoo) ntawm cov khoom.

Hongwu tuam txhab yog muab Nano titanium dioxide raws li hauv qab no:

1. Anatase TiO2, loj 10nm, 30-50nm.99% +

2. Rutile TIO2, loj 10nm, 30-50nm, 100-200nm.99% +

Thov koj xav tiv tauj peb rau cov lus nug.