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Dab tsi yog qhov txawv ntawm aramid fiber ntau thiab carbon fiber?

Views:181 Author: Tshaj Tawm Sijhawm: 2022-11-09 keeb kwm:

1. Cov ntawv thov sib txawv

          Cov pa roj carbon fiber ntau yog cov khoom siv fiber ntau nrog cov ntsiab lus carbon ntau dua 95%. Cov pa roj carbon fiber yog hu ua "dub kub", uas qhia tau hais tias nws tus nqi thiab tus nqi siab heev. Nws yog tsuas yog siv nyob rau hauv aerospace, lub teb chaws tiv thaiv thiab tub rog industries. Nrog rau kev nce hauv kev tsim muaj peev xwm ntawm cov cab loj carbon fiber ntau, muaj ntau thiab ntau daim ntawv thov nyob rau hauv industrial manufacturing thiab civil teb. .

          Aramid fiber ntau yog ib hom tshiab ntawm hluavtaws fiber ntau, uas yog qhov tseem ceeb sib txawv ntawm carbon fiber. Aramid fiber kuj muaj cov yam ntxwv ntawm lub zog siab thiab siab modulus, thiab kuj tseem zoo heev nyob rau hauv qhov kub thiab txias, acid thiab alkali tsis kam, thiab lwm yam. Nws yog feem ntau siv rau hauv cov khoom siv mos mos, cov khoom siv, cov khaub ncaws tiv thaiv tshwj xeeb thiab cov khoom siv hluav taws xob.


2. Cov khoom siv sib txawv

          Lub zog tensile ntawm T300 carbon fiber yog 3000MPa, elastic modulus yog 225GPa, lub elongation ntawm so yog 1.7%, thiab qhov ceev yog 1.7g / cm^3. Kev ua tau zoo ntawm T1000 carbon fiber ntau dua li ntawm T300. Tsis tas li ntawd, muaj cov modulus siab thiab siab zog thiab siab modulus. 2 series ntawm carbon fiber ntau nrog kev ua haujlwm dav dav.

          Lub zog tensile ntawm aramid fiber yog 2815MPa, elastic modulus yog 126GPa, elongation ntawm so yog 2.5%, thiab qhov ceev yog 1.44g / cm^3. Qhov cuam tshuam tsis kam ntawm aramid fiber ntau yog qhov zoo heev, thiab tus nqi elongation yog qhov siab. Nyob rau hauv cov nqe lus ntawm mechanical zog, carbon fiber muaj lub siab dua txwv, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm lub zog thiab modulus.


3. Txawv thermal stability

          Aramid fiber ntau muaj thermal stability zoo. Nyob rau hauv qhov kev txiav txim siab kub, nws yuav tsis deform kom txog thaum nws decomposed. Nws tuaj yeem siv tau ntawm 180 ° C rau lub sijhawm ntev. Tom qab ib lub lim tiam ntawm kev ua ntawm 150 ° C, lub zog thiab cov qauv yuav tsis txo qis. Tsis tas li ntawd, nws coefficient ntawm thermal expansion yog -2 × 10^-6. Piv nrog rau aramid, thermal stability ntawm carbon fiber kuj zoo dua, thiab thermal expansion coefficient yog me dua li ntawm aramid, uas yog -1.4 × 10^-6.


4. Cov khoom siv thermochemical sib txawv

           Cov khoom siv tshuaj lom neeg ntawm carbon fiber zoo ib yam li carbon, tshwj tsis yog tias nws tuaj yeem oxidized los ntawm cov oxidants muaj zog, nws yog inert rau dav alkali. Thaum qhov kub ntawm huab cua siab tshaj 400 ° C, oxidation tseem ceeb tshwm sim thiab CO yog generated. Cov pa roj carbon fiber ntau muaj kev tiv thaiv zoo rau cov organic solvents, acids thiab alkalis, tsis o los yog o, muaj kev tiv thaiv corrosion, thiab tsis muaj teeb meem xeb txhua. Aramid fiber ntau muaj kev tiv thaiv zoo rau kev tshaj tawm, thiab feem ntau muaj zog tiv thaiv cov tshuaj nruab nrab, tab sis nws yooj yim eroded los ntawm ntau yam acids thiab alkalis, tshwj xeeb tshaj yog muaj zog acids, thiab nws cov dej kuj tsis zoo.


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