Cov txiaj ntsig ntawm Iav Fiber hauv cov khoom siv tshuaj lom neeg raws li graphite

Graphite siv dav hauv kev tsim khoom siv tshuaj vim nws zoo heev tiv taus corrosion, hluav taws xob conductivity, thiab thermal stability. Txawm li cas los xij, graphite muaj cov khoom siv kho tshuab tsis zoo, tshwj xeeb tshaj yog nyob rau hauv kev cuam tshuam thiab kev co.Cov iav fiber, ua cov khoom siv sib xyaw ua ke zoo, muaj cov txiaj ntsig zoo thaum siv rau cov khoom siv tshuaj graphite vim nws tiv taus cua sov, tiv taus xeb, thiab cov khoom siv kho tshuab zoo heev. Cov txiaj ntsig tshwj xeeb suav nrog:

(1) Kev Ua Haujlwm Zoo Dua

Lub zog tensile ntawm cov iav fiber tuaj yeem ncav cuag 3,450 MPa, ntau dua li ntawm graphite, uas feem ntau yog li ntawm 10 txog 20 MPa. Los ntawm kev koom ua ke cov iav fiber rau hauv cov ntaub ntawv graphite, kev ua haujlwm tag nrho ntawm cov khoom siv tuaj yeem txhim kho tau zoo heev, suav nrog kev tiv taus kev cuam tshuam thiab kev co.

(2) Kev Tiv Thaiv Kev Xeb

Cov iav fiber qhia tau zoo heev tiv taus feem ntau cov kua qaub, alkalis, thiab cov kuab tshuaj. Thaum graphite nws tus kheej yog cov tshuaj tiv taus corrosion heev,iav fibertej zaum yuav muaj kev ua tau zoo dua nyob rau hauv cov chaw muaj tshuaj lom neeg hnyav, xws li qhov kub thiab txias thiab siab, oxidizing atmospheres, lossis hydrofluoric acid ib puag ncig.

(3) Cov Khoom Siv Thermal Zoo Dua

Cov iav fiber muaj qhov coefficient qis heev ntawm thermal expansion (CTE) ntawm kwv yees li 5.0 × 10−7 / ° C, ua kom muaj kev ruaj khov ntawm qhov ntev hauv qab kev ntxhov siab thermal. Tsis tas li ntawd, nws qhov siab melting point (1,400–1,600 ° C) muab kev tiv thaiv kub siab heev. Cov yam ntxwv no ua rau cov khoom siv graphite uas muaj iav fiber txhawb nqa kom tswj tau qhov kev ua haujlwm thiab kev ua haujlwm hauv qhov chaw kub siab nrog qhov deformation tsawg kawg nkaus.

(4) Qhov Zoo ntawm Qhov Hnyav

Nrog qhov ceev ntawm kwv yees li 2.5 g / cm3, cov iav fiber hnyav dua li graphite me ntsis (2.1–2.3g / cm3) tab sis sib dua li cov khoom siv hlau xws li hlau lossis txhuas. Kev koom ua ke ntawm cov iav fiber rau hauv cov khoom siv graphite txhim kho kev ua tau zoo yam tsis nce qhov hnyav ntau, khaws cov khoom siv lub teeb thiab nqa tau yooj yim.

(5) Kev Siv Nyiaj Zoo

Piv rau lwm cov khoom sib xyaw ua ke zoo (piv txwv li, carbon fiber), iav fiber ntau dua, ua rau nws zoo dua rau cov ntawv thov kev lag luam loj:

Cov Nqi Khoom Siv Raw:Cov iav fiberfeem ntau siv cov iav pheej yig, thaum cov carbon fiber vam khom cov acrylonitrile kim.

Cov Nqi Tsim Khoom: Ob qho tib si cov ntaub ntawv xav tau kev ua haujlwm kub thiab siab, tab sis kev tsim cov roj carbon fiber cuam tshuam nrog cov kauj ruam nyuaj ntxiv (piv txwv li, polymerization, oxidation stabilization, carbonization), tsav tsheb nce nqi.

Kev Siv Dua thiab Kev Pov Tseg: Cov roj carbon fiber nyuaj rau kev siv dua thiab muaj kev pheej hmoo rau ib puag ncig yog tias siv tsis raug, ua rau cov nqi pov tseg siab dua. Cov iav fiber, qhov sib piv, yooj yim dua thiab zoo rau ib puag ncig hauv cov xwm txheej kawg ntawm lub neej.