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Kev cia siab ntev rau cov ntaub ntawv thermoset carbon-fiber rau kev ua kom muaj zog sib xyaw ua ke rau lub dav hlau, aerospace OEMs tam sim no embracing lwm chav kawm ntawm carbon-fiber cov ntaub ntawv raws li technological advances cog lus automated manufacture ntawm tshiab tsis-thermoset qhov chaw ntawm siab ntim, tsis muaj nqi, thiab hnyav dua.

Thaum cov khoom siv thermoplastic carbon-fiber composite "tau nyob ib puag ncig ntev," tsuas yog tsis ntev los no tuaj yeem tsim cov tuam txhab aerospace xav txog lawv txoj kev siv dav hauv kev ua cov khoom siv dav hlau, suav nrog cov khoom siv hauv tsev, Stephane Dion, vp engineering ntawm Collins Aerospace's Advanced Structures unit.

Thermoplastic carbon-fiber composites muaj peev xwm muab aerospace OEMs ntau qhov zoo dua cov thermoset composites, tab sis txog thaum nyuam qhuav tsis ntev los no cov tuam txhab lag luam tsis tuaj yeem tsim cov khoom ntawm cov khoom siv thermoplastic ntawm tus nqi siab thiab tus nqi qis, nws hais.

Hauv tsib xyoos dhau los, OEMs tau pib saib dhau ntawm kev ua cov khoom siv los ntawm cov khoom siv thermoset raws li lub xeev ntawm carbon-fiber composite ib feem tsim kev tshawb fawb tsim, ua ntej siv resin infusion thiab resin hloov molding (RTM) cov tswv yim los ua cov khoom siv dav hlau, thiab tom qab ntawd siv cov thermoplastic composites.

GKN Aerospace tau nqis peev ntau hauv kev tsim nws cov resin-infusion thiab RTM thev naus laus zis rau kev tsim cov khoom siv dav hlau loj loj uas pheej yig thiab tus nqi siab. GKN tam sim no ua rau 17-meter-ntev, ib-thooj sib xyaw tis spar siv resin infusion manufacturing, raws li Max Brown, vp ntawm thev naus laus zis rau GKN Aerospace's Horizon 3 advanced-technologies teg num.

OEMs 'kev lag luam hnyav sib xyaw ua lag luam nyob rau hauv ob peb xyoos dhau los kuj tseem suav nrog kev siv nyiaj txiag los tsim cov peev txheej kom tso cai rau cov khoom siv hluav taws xob ntau ntawm cov khoom siv thermoplastic, raws li Dion.

Qhov tseem ceeb tshaj qhov sib txawv ntawm cov khoom siv thermoset thiab cov khoom siv thermoplastic yog nyob rau hauv qhov tseeb tias cov ntaub ntawv thermoset yuav tsum tau muab cia rau hauv qhov chaw txias ua ntej yuav zoo li tus, thiab ib zaug zoo li tus, ib feem ntawm cov thermoset yuav tsum tau kho rau ntau teev hauv autoclave. Cov txheej txheem xav tau ntau lub zog thiab lub sijhawm, thiab yog li cov nqi tsim khoom ntawm cov khoom siv thermoset yuav nyob twj ywm siab.

Curing hloov cov qauv molecular ntawm cov thermoset sib xyaw irreversibly, muab qhov nws lub zog. Txawm li cas los xij, nyob rau theem tam sim no ntawm kev txhim kho thev naus laus zis, kev kho kuj tseem ua rau cov khoom siv hauv qhov tsis tsim nyog rau rov siv dua hauv cov txheej txheem tseem ceeb.

Txawm li cas los xij, cov ntaub ntawv thermoplastic tsis tas yuav cia txias lossis ci thaum ua rau hauv qhov chaw, raws li Dion. Lawv tuaj yeem raug stamped rau hauv cov duab kawg ntawm ib qho yooj yim-txhua lub bracket rau lub fuselage thav duab hauv Airbus A350 yog ib feem ntawm cov thermoplastic composite-los yog mus rau theem nrab ntawm ib qho kev sib xyaw ua ke.

Cov ntaub ntawv thermoplastic tuaj yeem raug welded ua ke nyob rau hauv ntau txoj kev, tso cai rau cov complex, zoo li zoo li tus yuav tsum tau ua los ntawm tej yam yooj yim substructures. Niaj hnub no induction welding feem ntau yog siv, uas tsuas yog tso cai rau lub tiaj, tas li-thickness qhov chaw yuav tsum tau ua los ntawm sub-parts, raws li Dion. Txawm li cas los xij, Collins tab tom txhim kho kev co thiab kev sib txhuam vuam cov txheej txheem rau kev koom nrog cov khoom siv thermoplastic, uas ib zaug tau lees paub nws xav tias nws thiaj li tso cai rau nws los tsim "cov txheej txheem nyuaj heev," nws hais.

Lub peev xwm los txuas ua ke cov ntaub ntawv thermoplastic los ua cov txheej txheem nyuaj tso cai rau cov tuam txhab ua kom tshem tawm cov hlau screws, fasteners, thiab hinges xav tau los ntawm cov khoom siv thermoset rau kev sib koom thiab folding, yog li tsim kom muaj txiaj ntsig txo qhov hnyav li ntawm 10 feem pua, Brown kwv yees.

Tseem, thermoplastic composites daim ntawv cog lus zoo dua rau cov hlau dua li cov thermoset composites, raws li Brown. Thaum muaj R & D tsom rau kev tsim cov ntawv thov rau cov khoom siv thermoplastic tseem nyob "ntawm qhov kev npaj thev naus laus zis thaum ntxov," nws yuav nws thiaj li tso cai rau cov kws ua haujlwm hauv aerospace tsim cov khoom uas muaj hybrid thermoplastic-thiab-hlau integrated lug.

Ib daim ntawv thov muaj peev xwm tuaj yeem, piv txwv li, yog ib qho ntawm ib qho, lub dav hlau dav hlau cov neeg caij tsheb uas muaj tag nrho cov hlau-raws li circuitry xav tau rau lub interface siv los ntawm cov neeg caij tsheb los xaiv thiab tswj nws cov kev lom zem hauv tshav dav hlau, lub rooj teeb pom kev zoo, kiv cua nyiaj siv ua haujlwm. , hluav taws xob tswj lub rooj zaum recline, qhov rais ntxoov ntxoo opacity, thiab lwm yam haujlwm.

Tsis zoo li cov ntaub ntawv thermoset, uas xav tau kev kho kom tsim tau qhov nruj, lub zog, thiab cov duab xav tau los ntawm cov khoom uas lawv tau ua, cov qauv molecular ntawm cov khoom siv thermoplastic tsis hloov thaum ua rau hauv qhov chaw, raws li Dion.

Raws li qhov tshwm sim, cov ntaub ntawv thermoplastic yog qhov tawg-tiv taus ntau dua li cov khoom siv thermoset thaum muab cov khoom zoo sib xws, yog tias tsis muaj zog dua, cov qauv toughness thiab lub zog. Dion hais tias, "Yog li koj tuaj yeem tsim [qhov] mus rau ntau qhov ntsuas, "hais tias, lub ntsiab lus thermoplastic qhov hnyav dua li cov khoom siv thermoset uas lawv hloov, txawm tias sib nrug los ntawm qhov hnyav ntxiv los ntawm qhov tseeb cov khoom siv thermoplastic tsis tas yuav tsum tau hlau screws lossis fasteners. .

Recycling thermoplastic qhov chaw yuav tsum tau ua pov thawj txoj kev yooj yim dua li cov khoom siv thermoset rov ua dua. Ntawm lub xeev tam sim no ntawm cov cuab yeej technology (thiab rau qee lub sijhawm los), qhov hloov tsis tau hloov pauv hauv cov qauv molecular uas tsim los ntawm kev kho cov ntaub ntawv thermoset tiv thaiv kev siv cov khoom siv rov ua dua tshiab los ua qhov tshiab ntawm lub zog sib npaug.

Recycling thermoset qhov chaw suav nrog kev sib tsoo cov carbon fibers hauv cov khoom siv rau hauv me me ntev thiab hlawv cov fiber-thiab-resin sib tov ua ntej rov ua dua. Cov khoom uas tau txais rau kev rov ua dua yog qhov tsis muaj zog dua li cov khoom siv thermoset los ntawm cov khoom siv rov ua dua tshiab, yog li kev rov ua dua cov khoom siv thermoset rau hauv cov tshiab feem ntau tig "tus qauv thib ob mus rau qib thib ob," Brown hais.

Ntawm qhov tod tes, vim tias cov qauv molecular ntawm cov khoom siv thermoplastic tsis hloov pauv hauv qhov chaw tsim khoom thiab cov txheej txheem sib koom ua ke, lawv tuaj yeem tsuas yog yaj mus rau hauv cov kua hauv daim ntawv thiab rov ua dua rau hauv qhov chaw muaj zog li qub, raws li Dion.

Cov neeg tsim qauv dav hlau tuaj yeem xaiv los ntawm ntau qhov kev xaiv ntawm cov khoom siv thermoplastic sib txawv uas muaj los xaiv los ntawm kev tsim thiab tsim khoom. "Ib tug zoo nkauj ntau yam ntawm resins" muaj nyob rau hauv uas ib-dimensional carbon fiber filaments los yog ob-dimensional weaves yuav embedded, tsim cov khoom sib txawv, hais tias Dion. "Cov resins zoo siab tshaj plaws yog cov resins uas tsis muaj yaj," uas yaj ntawm qhov kub thiab txias thiab yog li tuaj yeem ua tau zoo li qub thiab tsim los ntawm qhov kub thiab txias.

Cov chav kawm sib txawv ntawm cov thermoplastics kuj muaj cov khoom sib txawv (siab, nruab nrab, thiab qis) thiab zoo tag nrho, raws li Dion. Qhov zoo tshaj plaws resins raug nqi ntau tshaj plaws, thiab kev them taus sawv cev rau Achilles pob taws rau cov thermoplastics piv nrog cov ntaub ntawv thermoset. Feem ntau, lawv raug nqi ntau dua li cov thermosets, thiab cov tuam txhab tsim dav hlau yuav tsum xav txog qhov tseeb hauv lawv cov nqi tsim / txiaj ntsig, hais tias Brown.

Ib feem yog vim li ntawd, GKN Aerospace thiab lwm tus yuav tsom mus rau feem ntau ntawm cov khoom siv thermoset thaum tsim cov qauv loj rau lub dav hlau. Lawv twb siv cov ntaub ntawv thermoplastic dav hauv kev ua cov qauv me me xws li empennages, rudders, thiab spoilers. Tsis ntev los no, txawm li cas los xij, thaum lub ntim siab, tus nqi qis ntawm cov khoom siv hluav taws xob sib xyaw ua haujlwm niaj hnub, cov tuam ntxhab yuav siv lawv ntau dua - tshwj xeeb hauv kev lag luam eVTOL UAM, xaus lus Dion.

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