xov xwm

Cov khoom siv lub cev ntawm cov khoom sib xyaw yog cov fibers. Qhov no txhais tau tias thaum cov resins thiab cov fibers raug sib xyaw ua ke, lawv cov khoom zoo ib yam li cov ntawm cov fibers ib leeg. Cov ntaub ntawv xeem qhia tau hais tias cov khoom siv fiber-reinforced yog cov khoom uas nqa feem ntau ntawm cov khoom thauj. Yog li ntawd, kev xaiv ntaub yog qhov tseem ceeb thaum tsim cov qauv sib xyaw.
Pib cov txheej txheem los ntawm kev txiav txim siab hom kev txhawb nqa uas xav tau rau koj qhov project. Ib lub chaw tsim khoom feem ntau tuaj yeem xaiv los ntawm peb hom kev txhawb nqa: iav fiber, carbon fiber thiab Kevlar® (aramid fiber). Iav fiber feem ntau yog qhov kev xaiv thoob ntiaj teb, thaum carbon fiber muaj kev ruaj khov siab thiab Kevlar® muaj kev tiv thaiv kev sib txhuam siab. Nco ntsoov tias cov ntaub tuaj yeem sib xyaw ua ke hauv laminates los tsim cov pawg sib xyaw uas muab cov txiaj ntsig ntawm ntau dua ib yam khoom.
Cov Khoom Siv Fiberglass
Fiberglass yog ib yam khoom siv uas neeg paub zoo. Fiberglass yog lub hauv paus ntawm kev lag luam composites. Txij li xyoo 1950 los, nws tau siv rau hauv ntau daim ntawv thov composite thiab nws cov khoom siv lub cev tau nkag siab zoo. Fiberglass yog lub teeb yuag, muaj lub zog tensile thiab compressive nruab nrab, tuaj yeem tiv taus kev puas tsuaj thiab cyclic loading, thiab yooj yim rau kev tuav. Cov khoom uas tawm los ntawm kev tsim khoom hu ua fiberglass reinforced plastic (FRP) khoom. Nws yog ib qho tshwm sim hauv txhua qhov chaw ntawm lub neej. Vim li cas nws thiaj hu ua fiberglass yog vim tias hom fiber filament no yog ua los ntawm kev yaj quartz thiab lwm yam khoom siv ore ntawm qhov kub siab rau hauv cov iav slurry. Thiab tom qab ntawd rub tawm ntawm cov filaments ceev ceev. Hom fiber no yog vim muaj ntau yam sib txawv. Qhov zoo yog tiv taus kub, tiv taus corrosion, lub zog ntau dua. Kev rwb thaiv tsev zoo. Thiab carbon fiber muaj tib qhov tsis zoo yog cov khoom yog brittle dua. Tsis zoo ductility. Tsis hnav-resistant. Tam sim no, rwb thaiv tsev, khaws cia kub, tiv thaiv corrosion yooj yim thiab ntau lwm qhov chaw muaj kev siv iav fiber reinforced yas.
Fiberglass yog cov khoom siv dav tshaj plaws ntawm txhua yam khoom sib xyaw. Qhov no feem ntau yog vim nws tus nqi qis thiab cov khoom siv lub cev nruab nrab. Fiberglass zoo rau cov haujlwm txhua hnub thiab cov khoom uas tsis xav tau cov ntaub fiber ntau dhau rau lub zog thiab kev ua haujlwm ntev.
Yuav kom ua kom lub zog ntawm fiberglass zoo tshaj plaws, nws siv tau nrog epoxy resins thiab tuaj yeem kho tau siv cov txheej txheem lamination txheem. Nws zoo heev rau kev siv hauv kev lag luam tsheb, marine, kev tsim kho, tshuaj lom neeg thiab aerospace thiab feem ntau siv rau hauv cov khoom siv kis las.

Kev Txhawb Nqa Aramid Fiber
Aramid fiber yog ib qho tshuaj lom neeg siv tshuab siab heev. Nws muaj lub zog siab, tiv taus kub, tiv taus corrosion, lub teeb yuag thiab lwm yam ntxwv, thiab yog ib qho ntawm cov ntaub ntawv tseem ceeb hauv kev lag luam tiv thaiv. Muaj ntau daim ntawv thov hauv cov khoom siv tiv thaiv mos txwv thiab cov khoom siv ya dav hlau.
Cov fibers Aramid yog ib qho ntawm thawj cov fibers hluavtaws muaj zog siab uas tau txais kev lees paub hauv kev lag luam fiber-reinforced plastics (FRP). Cov fibers para-aramid sib xyaw yog lub teeb yuag, muaj lub zog tensile zoo heev, thiab suav tias yog qhov tiv taus kev cuam tshuam thiab kev puas tsuaj. Cov ntawv thov feem ntau suav nrog cov hulls sib dua xws li kayaks thiab canoes, cov vaj huam sib luag fuselage dav hlau thiab cov hlab siab, cov hnab looj tes tiv taus txiav, cov tsho tiv thaiv mos txwv thiab ntau ntxiv. Cov fibers Aramid siv nrog epoxy lossis vinyl ester resins.

Kev Txhawb Nqa Carbon Fiber
Nrog cov pa roj carbon ntau dua 90%, carbon fiber muaj lub zog tensile siab tshaj plaws hauv kev lag luam FRP. Qhov tseeb, nws kuj muaj lub zog compressive thiab flexural loj tshaj plaws hauv kev lag luam. Tom qab ua tiav, cov fibers no tau sib xyaw ua ke los tsim cov carbon fiber reinforcements xws li cov ntaub thiab tows. Carbon fiber reinforcement muab lub zog tshwj xeeb thiab kev nruj tshwj xeeb, thiab nws feem ntau kim dua li lwm cov fiber reinforcements.
Yuav kom ua kom cov carbon fiber muaj zog tshaj plaws, nws yuav tsum tau siv nrog epoxy resins thiab tuaj yeem kho tau siv cov txheej txheem lamination txheem. Nws zoo heev rau kev siv tsheb, marine thiab aerospace thiab feem ntau siv rau hauv cov khoom siv kis las.