Kev sib piv ntawm carbon fiber tube thiab iav fiber ntau raj
Carbon fiber tube thiab iav fiber yeeb nkab yog ob daim ntawv thov ntawm cov raj sib xyaw.carbon fiber tube yog tsim los ntawm winding, pultrusion los yog winding ntawm carbon fiber prepreg, thaum iav fiber tube yog kos thiab extruded los ntawm iav fiber thiab resin.Cov kav dej ntawm ob cov ntaub ntawv no tau siv dav hauv aerospace, tsheb tsim, kev ua kis las thiab lwm yam lag luam.Dab tsi yog qhov txawv ntawm lawv qhov kev ua tau zoo?
Qhov ceev ntawm carbon fiber tube yog 1.6g / cm ³, uas yog tsawg tshaj li ntawm txhuas alloy, lub tensile lub zog ntawm steel yeeb nkab yog 300 ~ 600MPa, lub tensile zog ntawm aluminium alloy yeeb nkab yog 110 ~ 136MPa, thiab tensile zog ntawm carbon fiber tube yog hais txog 1500MPa.Lub thermal expansion coefficient ntawm carbon fiber composite yog-1.4 × 10 ^-6, uas tuaj yeem xyuas kom meej tias qhov loj ntawm cov khoom ruaj khov thiab tsis yooj yim rau deform.Lub zog qaug zog txwv ntawm carbon fiber tube yog 70% ~ 80% ntawm nws lub zog tensile.Thaum ua hauj lwm nyob rau hauv lub sij hawm ntev alternating load, cov pa roj carbon fiber tube yog ruaj khov thiab muaj ib tug ntev kev pab cuam lub neej.Thiab cov khoom siv fiber ntau muaj cov khoom siv hluav taws xob zoo thiab kev ua haujlwm zoo electromagnetic shielding.
Qhov ntom ntawm cov iav fiber ntau 2.53 ~ 2.55g / cm³ hnyav dua li cov pa roj carbon fiber ntau ntawm tib lub ntsiab lus, tensile lub zog 100 ~ 300MPa, modulus ntawm elasticity 7000MPa, elongation ntawm tawg 1.554%, Poisson tus piv ntawm thermal expansion 0.22, coefficient expansion 4.8 × 10 ^ 4.Cov kab mob kuj tseem loj heev, thiab thaum cov kab mob nce mus txog 1% ~ 2%, cov resin yuav tawg, yog li qhov kev tso cai muaj kev ntxhov siab ntawm cov iav fiber ntau tsis tshaj 60% ntawm qhov txwv kev ntxhov siab, thaum lub raj carbon fiber ntau loj elastic modulus thiab muaj peev xwm tswj tau zoo txhua yam khoom nyob rau hauv cov kev txwv kev nyuaj siab.
Txhawm rau ua kom tiav, carbon fiber tube muaj qhov zoo dua li cov iav fiber ntau hauv cov khoom siv kho tshuab, tab sis txhua tus ntawm lawv muaj nws tus kheej daim ntawv thov, piv txwv li, iav fiber tube xav tau nyob rau hauv qhov chaw uas yuav tsum tau rwb thaiv tsev.
Post lub sij hawm: Dec-10-2021