1. Cov yam ntxwv ntawm carbon fiber
Cov pa roj carbon fiber ntau yog ib yam tshiab ntawm cov khoom siv fiber ntau nrog lub zog siab thiab siab modulus fiber ntau nrog cov ntsiab lus carbon ntau dua 90%.
- Cov pa roj carbon fiber ntau muaj cov khoom zoo heev, xws li lub zog siab, tsis tshua muaj siab, kub tsis kam, corrosion kuj, thiab lwm yam. Nws yog dav siv nyob rau hauv ntau lub teb xws li aerospace, tsheb tsim, khoom ua si, thiab lwm yam. Nyob rau hauv lub tshav pob ntawm aerospace, vim nws lub teeb yuag thiab lub zog siab, nws tuaj yeem txo qhov hnyav ntawm lub dav hlau thiab txhim kho roj efficiency. Hauv cov khoom siv kis las, xws li cov tsheb kauj vab siab thiab cov koom haum golf, kev siv cov pa roj carbon fiber tuaj yeem txhim kho kev ua haujlwm.
2. Cov yam ntxwv ntawm cov qauv thiab melting point ntawm carbon fiber
- Cov qauv ntawm cov pa roj carbon fiber ntau yog tsim los ntawm cov ntsiab lus carbon nyob rau hauv daim ntawv ntawm graphite microcrystals. Cov qauv no ua rau carbon fiber ntau ruaj khov. Los ntawm qhov kev xav ntawm cov khoom siv tshuaj, cov pa roj carbon-carbon bonds (CC bonds) hauv cov roj carbon fiber ntau muaj zog heev.
- Lub melting point ntawm carbon fiber ntau heev. Nyob rau hauv ib txwm muaj siab, carbon fiber yuav hardly yaj. Qhov no yog vim hais tias nws siv lub zog siab heev los rhuav tshem nws sab hauv muaj zog carbon-carbon bond qauv. Feem ntau hais lus, thaum kub nce mus rau ib theem, carbon fiber yuav raug oxidation cov tshuaj tiv thaiv nyob rau hauv lub xub ntiag ntawm oxygen, es tsis yog melting li zoo tib yam hlau los yog ib co tsawg-melting-point cov ntaub ntawv. Piv txwv li, nyob rau hauv qhov kub-kub ib puag ncig ib ncig ntawm lub dav hlau cav, carbon fiber yuav tsis yaj tab sis yuav tswj nws cov yam ntxwv stability thiab ua si nws lub luag hauj lwm raws li ib tug reinforcing khoom.
3. Kev ua haujlwm ntawm carbon fiber ntau ntawm qhov kub thiab txias
- Nyob rau hauv qhov chaw kub kub, carbon fiber yuav nthuav tawm qee yam khoom tshwj xeeb. Ntxiv nrog rau cov lus hais saum toj no nyuaj hauv melting, nws tseem tuaj yeem tuav tau qee lub zog. Qhov no tso cai rau nws siv nyob rau hauv high-temperature industrial puag ncig los yog nyob ze ntawm high-temperature qhov chaw ntawm aerospace. Txawm li cas los xij, raws li qhov kub thiab txias ntxiv, lub zog ntawm carbon fiber yuav maj mam txo.
- Thaum qhov kub nce mus rau ib theem (feem ntau nyob ib ncig ntawm 2000-3000} degree, tus nqi tshwj xeeb yuav txawv nyob ntawm seb hom carbon fiber ntau thiab cov txheej txheem tsim khoom), cov pa roj carbon fiber ntau yuav raug hloov pauv, xws li kev nce hauv degree ntawm graphitization, tab sis nws tseem yuav tsis yaj. Qhov kev ua haujlwm tshwj xeeb ntawm qhov kub thiab txias ua rau cov pa roj carbon fiber ntau hloov tsis tau hauv cov teb uas xav tau cov ntaub ntawv kub-resistant.
