Cov ntaub ntawv carbon fiber ntau tau hloov kho cov tshuab engineering niaj hnub no, nrog rau cov ntawv thov nthuav dav los ntawm qib siab -kawg teb xws li aerospace mus rau kev tsim tsheb, khoom ua si, thiab ntau yam kev siv hauv kev lag luam. Raws li kev lag luam txuas ntxiv nthuav dav, qhov sib txawv ntawm ntau cov txheej txheem tsim khoom tau dhau los ua pom tseeb. Niaj hnub no, kev txiav txim siab zoo ntawm cov khoom siv fiber ntau tsis yog qhov tshwj xeeb ntawm cov kws tshawb fawb cov ntaub ntawv, tab sis yog ib qho txuj ci tseem ceeb rau cov kws tsim khoom, kev txiav txim siab yuav khoom- cov neeg tsim khoom, thiab txawm tias cov neeg nyiam. Tsab ntawv xov xwm no yuav txheeb xyuas cov txheej txheem kev soj ntsuam zoo thiab cov ntawv pov thawj cuam tshuam rau cov ntaub ntawv carbon fiber ntau kom pom tseeb thiab yooj yim-kom- nkag siab zoo, thiab yuav nkag siab txog cov ntsiab lus tseem ceeb rau kev paub qhov txawv siab - cov khoom ua tau zoo los ntawm qis - kev coj ua zoo.
Yuav ua li cas txiav txim siab qhov zoo ntawm cov khoom siv fiber ntau pom kev thiab cov qauv?
Kev kuaj pom pom yog thawj kauj ruam hauv kev ntsuas qhov zoo ntawm cov khoom siv carbon fiber. Thaum cov pa roj carbon fiber ntau feem ntau suav hais tias yog lub cim zoo nkauj vim nws qhov tshwj xeeb thiab paub txog kev ua haujlwm zoo nkauj, los ntawm kev tsim engineering, cov ntaub ntawv no ncaj qha cuam tshuam txog kev ncaj ncees ntawm cov khoom. High-cov khoom siv carbon fiber zoo yuav tsum muaj qhov sib xws, ua kom muaj kev sib raug zoo raws li kev coj ua. Txhua hom kev sib tw lossis qhov tsis sib xws, feem ntau hu ua "fiber washing" lossis "weave deformation," qhia tias fiber ntau hloov thaum lub sij hawm resin infusion los yog nqus hnab. Qhov no yog qhov tseem ceeb tshwj xeeb vim tias cov khoom siv hluav taws xob ntawm cov pa roj carbon fiber ntau nyob ntawm kev taw qhia fiber ntau; ib zaug cov kev taw qhia fiber ntau deviates los ntawm txoj kev thauj khoom tsim, cov khoom siv thauj khoom - bearing efficiency thiab tag nrho cov kev ua tau zoo yuav inevitably txo qis.
Nto tiav kuj yog ib qho tseem ceeb hauv kev txiav txim siab zoo ntawm cov khoom siv fiber ntau. Thaum lub sij hawm kev ntsuam xyuas, lub hom phiaj yuav tsum tau soj ntsuam xyuas qhov tsis xws luag xws li pinholes, resin- thaj chaw nplua nuj, lossis thaj chaw tsis txaus. Pinholes feem ntau tshwm sim raws li cov npuas me me ntawm qhov chaw, feem ntau tshwm sim los ntawm huab cua ntxiab lossis kev tswj lub tshuab nqus tsev tsis zoo. Resin- thaj chaw nplua nuj tshwm sim hauv zos tuab, ze rau - iav tso nyiaj, cuam tshuam qhov tsis sib xws hauv fiber ntau - rau - resin ratio. Rau siab -kev ua tau zoo carbon fiber ntau, qhov zoo tagnrho fiber ntau feem (Vf) feem ntau yuav tsum tau tswj ntawm 55% thiab 65%. Cov ntsiab lus ntawm cov resin ntau dhau tsuas yog nce qhov hnyav ntawm cov qauv yam tsis tau muab qhov sib npaug ntawm lub zog, thaum cov resin tsis txaus ua rau muaj kev txwv tsis pub muaj txiaj ntsig ntawm cov fibers, ua rau lawv muaj feem ua rau ntxov ntxov tsis ua hauj lwm nyob rau hauv lub siab.
Dab tsi yog cov cuab yeej tseem ceeb rau kev ntsuas qhov zoo ntawm cov khoom siv fiber ntau?
Tshaj li qhov zoo ntawm qhov chaw, qhov kev ua tau zoo ntawm cov khoom siv fiber ntau nyob hauv lawv cov khoom siv kho tshuab sab hauv. Vim qhov tseem ceeb anisotropy ntawm cov khoom siv fiber ntau, lawv cov khoom siv kho tshuab sib txawv nrog cov kev taw qhia fiber ntau, yuav tsum muaj kev ntsuam xyuas ntau los ntawm cov qauv kev ntsuas kev ntsuas. Feem ntau siv cov cim tseem ceeb suav nrog lub zog tensile, tensile modulus (ie, stiffness), thiab interlaminar shear zog (ILSS). Rau cov khoom lag luam uas yuav tsum tau suav tias yog "siab-kev ua tau zoo," nws cov txiaj ntsig kev xeem yuav tsum ua kom tau raws li qhov kev ua tau zoo raws li qib fiber ntau siv, xws li cov qauv teev rau cov qauv modulus lossis nruab nrab modulus fibers.
Lub zog tensile qhia txog qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus nyob rau hauv tensile load. Rau aerospace- qib carbon fiber ntau cov khoom, cov nqi no feem ntau siab dua 3,500 MPa. Txawm li cas los xij, lub zog ib leeg tsis txaus los ntsuas qhov zoo; elastic modulus yog qhov tseem ceeb sib npaug. High-modulus carbon fibers muab cov qauv nruj heev, uas yog qhov tseem ceeb heev rau cov ntawv thov uas muaj kev cuam tshuam rau kev deformation, xws li satellite xa caj npab thiab precision robots. Yog tias cov khoom siv tiag tiag pom "softness" lossis bendability uas tsis ua raws li cov qauv tsim tshwj xeeb thaum siv lossis kev sim, nws feem ntau qhia tias qib fiber ntau lossis qhov tsis tsim nyog layup tsim thiab ib ntus (interlayer alignment).
Lwm qhov kev qhia tseem ceeb uas tsis tuaj yeem tsis quav ntsej yog lub iav hloov pauv kub ntawm cov resin matrix. Hauv kev siv cov tswv yim, kev ua haujlwm ntev thiab kev ruaj ntseg ntawm cov khoom siv fiber ntau feem ntau txwv los ntawm qhov kub thiab txias uas cov resin pib muag. High-cov txheej txheem zoo epoxy resin siv cov txheej txheem autoclave feem ntau tuaj yeem tshaj 180 degree, tswj kev ua haujlwm ruaj khov nyob rau hauv siab thermal loads. Hloov pauv, yog tias qis dua -cov nqi polyester resins lossis qis- qib epoxy tshuab tau siv rau hauv cov txheej txheem tsim khoom, cov khoom yuav muaj kev sib hloov, deformation, los yog ib qho kev poob qis hauv qhov nruab nrab - qhov kub thiab txias - xws li thaj tsam hood ntawm lub tsheb raug tshav ntuj rau lub sijhawm ntev. Yog li ntawd, nyob rau hauv kev ntsuam xyuas cov cuab yeej cuab tam, kev ntsuam xyuas thermal stability thiab interfacial bonding kev ua tau zoo ntawm cov fiber ntau thiab cov resin matrix yuav tsum tau suav nrog los xyuas kom meej tias cov khoom sib xyaw txuas ntxiv ua rau nws lub zog muaj zog thiab kev ntseeg tau tag nrho thaum siv.
Kev sib piv ntawm cov khoom siv hluav taws xob ntawm cov khoom siv carbon fiber ntau qib zoo
| Hom Fiber | Tensile zog (MPa) | Tensile Modulus (GPa) | Daim ntawv thov | Carbon Fiber Khoom Zoo Qib |
| Txheem Modulus (T300 / T700) | 3,500 - 4,900 | 230 - 240 | Cov khoom siv ncaws pob, Automotive | Muaj Standard |
| Intermediate Modulus (IM7 / IM8) | 5,500 - 6,000 | 270 - 300 | Aerospace Primary Structures | Kev ua haujlwm siab |
| High Modulus (M40J / M55J) | 4,000 - 4,500 | 370 - 540 | Satellites, Precision Instruments | Ultra-High Qib |
Cov qauv ntawv pov thawj twg yog qhov tseem ceeb tshaj plaws rau qhov zoo ntawm cov khoom siv fiber ntau?
Kev txiav txim siab zoo ntawm cov khoom siv fiber ntau yuav tsum muaj kev nkag siab thiab kev lees paub ntawm cov qauv thoob ntiaj teb. Cov ntawv thov kev ua haujlwm tsis muaj ntawv pov thawj kev txhawb nqa feem ntau nyob hauv qib kev lag luam thiab nyuaj rau siv los ua lub hauv paus rau kev txiav txim siab engineering. Ntawm ntau tus qauv, aerospace- qib carbon fiber ntawv pov thawj yog dav lees paub tias yog qhov nruj tshaj plaws thiab kev tso cai, feem ntau muab tso rau hauv AS9100 kev tswj xyuas zoo. Cov txheej txheem no yuav tsum ua kom tiav traceability ntawm tag nrho cov txheej txheem ntawm fiber ntau thiab resin, los ntawm cov tshuaj precursors thiab raw khoom ua rau cov khoom kawg, kom ntseeg tau ib tug high℃ntawm sib xws thiab controllability nyob rau hauv lub manufacturing txheej txheem. Yog tias cov khoom siv carbon fiber ntau tau siv hauv thaj chaw aerospace lossis muaj kev nyab xeeb siab heev, lawv yuav tsum tau ua raws li cov qauv kev tswj xyuas zoo xws li AS9100 lossis IATF.
Cov txheej txheem tsim khoom cuam tshuam li cas rau qhov zoo ntawm cov khoom siv fiber ntau?
Hais txog cov khoom siv fiber ntau zoo, "yuav ua li cas" yog ib qho tseem ceeb xws li "yuav ua li cas." Muaj peb txoj hauv kev tseem ceeb: ntub dej, nqus dej, thiab prepreg / autoclave molding.
Kev ntub dej ntub dej yog ib qho tseem ceeb tshaj plaws molding txheej txheem hauv carbon fiber ntau. Txawm li cas los xij, vim qhov nyuaj ntawm kev tswj cov ntsiab lus ntawm cov resin thiab qhov cuam tshuam rau tib neeg kev ua yuam kev thaum muab cov fiber ntau, qhov zoo ntawm cov khoom tiav yog feem ntau qis. Thaum lub tshuab nqus tsev vacuum muaj cov txiaj ntsig zoo ntawm kev tsim cov khoom siv sab nrauv thiab cov hniav, nws feem ntau ua tsis tau raws li qhov kev xav tau ntawm kev ua haujlwm ntawm cov khoom siv. Raws li kev txhim kho ntawm cov txheej txheem ntub dej, lub tshuab nqus tsev vacuum siv cov cua kub kom sib npaug ntawm cov khoom siv rau hauv cov fiber ntau qhuav preform, uas tuaj yeem ua rau cov fiber ntau ntxiv - rau - resin piv rau qee qhov thiab txo qhov porosity. Txawm li cas los xij, txawm tias nrog cov kev txhim kho no, nws qhov kev ua tau zoo qab nthab tseem txwv.
Hauv kev ua haujlwm siab -kev ua haujlwm carbon fiber ntau, prepreg ua ke nrog autoclave curing tseem suav tias yog tus qauv kub rau kev tswj kom zoo. "Prepreg" yog hais txog kev faib ua feem ntawm cov khoom ua ntej- impregnated rau hauv cov pa roj carbon fibers raws li kev tswj xyuas, kom ntseeg tau tias cov ntsiab lus ntawm cov resin thiab kev faib tawm los ntawm qhov pib. Tom qab ntawd, cov nteg - cov khoom siv tau kho tau hauv autoclave. Ib qho autoclave yog qhov tseem ceeb ntawm cov cuab yeej kaw uas ib txhij siv qhov kub thiab txias siab, ua kom tshem tawm cov micropores thiab xyuas kom meej tias txhua qhov layup yog tuab tuab thiab zoo tib yam.
Hauv kev ntsuam xyuas cov khoom zoo ntawm carbon fiber, "porosity" yog qhov tseem ceeb zais kev phom sij cuam tshuam rau kev ua haujlwm. Cheebtsam kho nyob rau hauv ib tug autoclave feem ntau muaj ib tug porosity tswj hauv qab no 1%, thaum ntub - cov khoom nteg yuav muaj ib tug porosity siab li 5% los yog ntau dua. Cov pores no dhau los ua qhov chaw muaj kev ntxhov siab, yooj yim ua rau cov kab nrib pleb thiab ua rau lub cev tsis ua haujlwm ntxov. Yog li ntawd, kev nkag siab txog cov txheej txheem tsim khoom nws tus kheej yog ib txoj hauv kev zoo los ntsuas qhov zoo ntawm cov khoom siv fiber ntau. Yog tias ib yam khoom tau sau meej meej tias "autoclave kho," nws feem ntau txhais tau hais tias nws muaj kev ntseeg siab dua thiab lub zog zoo dua - rau - qhov hnyav piv, ua tau raws li qhov yuav tsum tau ua rau siab - cov khoom siv carbon fiber ntau.
Xaus
Rau cov neeg yuav khoom lossis cov kws tsim khoom, lub hom phiaj tseem ceeb yog kom tau txais "cov ntaub ntawv pov thawj ntawm qhov zoo." Qhov no txhais tau hais tias thaum xaiv lossis siv cov khoom siv carbon fiber ntau, lawv yuav tsum tau thov cov ntaub ntawv soj ntsuam cov ntaub ntawv, cov ntawv pov thawj, thiab nkag siab txog cov txheej txheem tsim khoom. Raws li cov ntaub ntawv pov thawj kev txhim khu kev qha, cov neeg siv tuaj yeem ua kom ntseeg tau tias cov khoom siv carbon fiber ntau lawv muaj tiag tiag muaj cov qauv tsim thiab kev nyab xeeb, tso cai rau cov khoom siv sib xyaw ua ke zoo tshaj plaws, hailed li "dub kub", yuav tsum tau siv rau hauv niaj hnub engineering thiab paub txog nws cov nqi tsim nyog.
Tiv tauj peb
Dongguan Julitech Composite Materials Technology Co., Ltd. yog ib lub tuam txhab ua haujlwm siab - carbon fiber ntau cov khoom lag luam los ntawm Tuam Tshoj. Nyob ntawm No. 5, Chuangxin Road, Shitanpu, Dongguan City, Guangdong Province, Suav teb, lub tuam txhab npog thaj tsam ntawm 10,300 square meters thiab muaj ntau tshaj 100 tus neeg ua haujlwm. Nws boasts 11 tube winding ntau lawm kab thiab ntau autoclaves. Peb lav peb qhov zoo, tau dhau daim ntawv pov thawj zoo thoob ntiaj teb xws li SGS, ISO9001, REACH, thiab TUV. Peb yog ib lub npe zoo-paub npe hauv Suav kev lag luam thiab koom tes nrog ntau lub tuam txhab teev npe. Txais tos tuaj xyuas peb lub Hoobkas hauv Suav teb. Tiv tauj peb ntawm WhatsApp: +86 18822947075 lossis email: sales18@julitech.cn.
Cov ntaub ntawv
ASTM International: Txoj Kev Xeem Txuj Ci rau Tensile Properties ntawm Polymer Matrix Composite Materials (D3039 / D3039M).
Hexcel Corporation: Composite Materials Selection Guide thiab Technical Data Sheets (T300, IM7 Series).
ISO (International Organisation for Standardization): ISO 14125: Fiber-cov khoom siv hluav taws xob ntxiv ({2}}) Kev txiav txim siab ntawm cov khoom flexural.
