Carbon Fiber Weaves: Lawv yog dab tsi thiab vim li cas siv lawv

Yog tias koj tau xav paub tias yog vim li cas ib daim ntawm carbon fiber yuav zoo li txawv dua lwm tus, koj tsis nyob ib leeg. Cov pa roj carbon fiber ntau los ntawm ntau qhov sib txawv, txhua qhov ua haujlwm sib txawv, thiab nws tsis yog qhov zoo nkauj xwb.

Cov pa roj carbon fibers yog tsim los ntawm precursors xws li polyacrylonitrile (PAN) thiab rayon. Precursor fibers yog chemically kho, rhuab thiab ncab, ces carbonized los tsim high-strength fibers. Cov fibers no, los yog filaments, ces muab ntim ua ke los tsim cov cab, uas tau txheeb xyuas los ntawm cov pa roj carbon filaments lawv muaj. Cov chav kawm towing feem ntau yog 3k, 6k, 12k thiab 15k. "k" txhais tau tias ib txhiab, yog li 3k cab yog ua los ntawm 3, 000 carbon filaments. Tus qauv 3k cab feem ntau yog 0.125 "dav, yog li ntim cov fiber ntau rau hauv qhov chaw me me. A 6k cab muaj 6, 000 carbon filaments, 12k cab muaj 12,{{16 } } carbon filaments, thiab lwm yam. Muaj ntau lub zog fibers bundled ua ke yog dab tsi ua carbon fiber xws li cov khoom muaj zog.

Woven carbon fiber ntau
Cov pa roj carbon fiber ntau feem ntau tuaj hauv daim ntawv ntawm cov ntaub npuag, uas ua rau nws yooj yim dua rau kev ua haujlwm nrog thiab, nyob ntawm daim ntawv thov, tuaj yeem muab cov qauv tsim muaj zog ntxiv. Yog li ntawd, carbon fiber fabrics tuaj nyob rau hauv ntau yam sib txawv weaves. Feem ntau yog cov khoom, twill, thiab ribbon satin, thiab peb mam li saib txhua yam ntxiv.

dawb weave
Lub tiaj-weave carbon fiber panels tshwm symmetrical, nrog ib tug me me checkerboard tsos. Nyob rau hauv cov ntaub ntawv no, cov hlua yog woven nyob rau hauv ib tug over/under pattern. Qhov sib nrug luv luv ntawm cov weaves muab lub tiaj weave ib qib siab ntawm kev ruaj ntseg. Fabric stability yog lub peev xwm ntawm cov ntaub los tuav nws lub kaum sab xis thiab fiber ntau orientation. Vim tias qhov kev ruaj ntseg siab no, cov ntaub qhwv dawb tsis tshua haum rau cov txheej txheem contoured, nws yuav tsis hloov pauv raws li qee qhov sib txawv. Feem ntau hais lus, tiaj weave yog tsim rau cov ntawv tiaj tus, cov kav dej thiab ob sab nkhaus.

Ib qho tsis zoo ntawm cov qauv weave no yog ntxhib crimp (lub kaum sab xis ntawm cov fibers ua thaum weaving, saib hauv qab no) hauv cov cab vim qhov luv luv ntawm interweaves. Rough crimps tsim muaj kev ntxhov siab uas tuaj yeem ua rau lub sijhawm tsis muaj zog.

Twill weave
Twill ua tus choj ntawm lub tiaj weave thiab satin weave peb mam li tham ntxiv. Twill yog hloov tau yooj yim txaus los tsim cov contours nyuaj thiab zoo dua ntawm kev tswj cov ntaub ruaj khov dua eeb satin weave, tab sis tsis zoo li cov weave. Yog hais tias koj ua raws li ib tug cab nyob rau hauv twill, nws mus los ntawm ib tug tej yam nab npawb ntawm cov cab thiab ces los ntawm tib tus naj npawb ntawm cov cab. Cov qauv saum toj no / hauv qab no tsim ib kab pheeb ces kaum zoo li lub npe hu ua "kab kab pheeb ces kaum". Qhov kev ncua deb ntawm txoj hlua khi sib txuas txhais tau hais tias tsawg dua crimping thiab tsis tshua muaj peev xwm muaj kev ntxhov siab ntau dua piv rau ib qho yooj yim weave.

2 × 2 Tiav

4 × 4 Tiav
2 × 2 Twill yog qhov zoo tshaj plaws paub carbon fiber ntaub hauv kev lag luam. Nws yog siv rau hauv ntau daim ntawv thov kom zoo nkauj thiab kho kom zoo nkauj tab sis kuj ua haujlwm tau zoo, nws muaj ob qho tib si formability thiab nruab nrab stability. Raws li lub npe ntawm 2 × 2 txhais tau tias, txhua tus cab yuav dhau los ntawm 2 tus cab thiab tom qab ntawd dhau 2 tus cab. Ib yam li ntawd, 4 × 4 twill yuav dhau 4 tus cab thiab tom qab ntawd 4 tus cab. Nws yog me ntsis formable tshaj 2 × 2 twill vim hais tias lub weave tsis nruj li, tab sis nws kuj tsis tshua ruaj khov.

Satin Weave
Lub satin weave tau tsim ntau txhiab xyoo dhau los los tsim cov ntaub lo lo ntxhuav uas muaj drape zoo heev thaum saib du thiab seamless. Rau kev sib xyaw ua ke, qhov drapability txhais tau tias nws tuaj yeem tsim thiab qhwv cov contours yooj yim. Vim hais tias ntawm lub siab formability ntawm cov ntaub no, nws yuav tsum muaj tsawg stability. Cov weaves feem ntau yog plaub-haddle (4HS), tsib-haddle (5HS) thiab yim-haddle (8HS). Raws li tus naj npawb ntawm satin weaves nce, formability nce thaum ntaub stability txo.

4 HS

5 HS

8 HS

Tus naj npawb hauv Harness Satin lub npe qhia tias tag nrho cov cab tau dhau mus. Rau 4HS nws yuav dhau 3 tus cab thiab tom qab ntawd hauv 1 tus cab. Rau 5HS nws yuav dhau 4 tus cab ces nyob rau hauv 1 lub laub thiab rau 8HS nws yuav dhau 7 tus cab ces nyob rau hauv 1 cab.

Spread Tow vs. Standard Tow
Kev sib kis cov ntaub ntawv tuaj yeem ua rau muaj kev cuam tshuam zoo ntawm kev siv cov ntaub ntawv unidirectional thiab cov ntaub ntawv txheej txheem. Thaum cov hlua fiber ntau yog woven nce thiab nqis los ua ib daim ntaub, lub zog yog txo vim crimps hauv cov cab. Raws li koj nce tus naj npawb ntawm filaments nyob rau hauv tus qauv cab, hais los ntawm 3k mus rau 6k, tus cab yuav loj (thicker) thiab lub crimp lub kaum sab xis yuav sharper. Ib txoj hauv kev kom tsis txhob muaj qhov no yog nthuav cov filaments mus rau hauv cov kab dav dav, hu ua kis kab mob, uas muaj ntau yam txiaj ntsig.

Spread tows muab lub kaum sab xis me dua li tus qauv cab braids thiab tuaj yeem txo qhov kev hla tsis xws luag los ntawm kev ua kom smoothness. Lub kaum sab xis crimp yuav ua rau muaj zog dua. Cov ntaub ntawv sib kis kuj yooj yim dua rau kev ua hauj lwm nrog cov ntaub ntawv unidirectional thiab tseem muaj kev tiv thaiv zoo fiber ntau rub-up.

Tshaj tawm lub tsheb loj

Spread tow twill weave
unidirectional
Raws li lub npe qhia, uni txhais tau tias ib tug, thiab tag nrho cov fibers fim tib txoj kev. Qhov no muab qee qhov txiaj ntsig zoo rau unidirectional (UD) fabrics. UD ntaub tsis yog woven thiab tsis muaj crimped interwoven fibers uas yuav ua rau cov qauv tsis muaj zog. Hloov chaw, muaj cov fibers txuas ntxiv uas ntxiv dag zog thiab nruj. Lwm qhov txiaj ntsig yog lub peev xwm los hloov kho cov stackup nrog ntau dua kev tswj hwm cov yam ntxwv ua haujlwm. Lub tsheb kauj vab yog ib qho piv txwv zoo ntawm UD fabrics tuaj yeem siv los kho qhov kev ua tau zoo. Lub thav duab yuav tsum nruj nyob rau hauv lub hauv qab bracket cheeb tsam kom hloov tus neeg caij lub hwj chim mus rau lub log, tab sis nws kuj yuav tsum tau ua raws li thiab saj zawg zog kom tsis txhob overwhelm tus neeg caij tsheb. Nrog UD cov ntaub ntawv, koj tuaj yeem xaiv qhov kev taw qhia meej ntawm cov fibers kom ua tiav lub zog xav tau.

Ib qho tsis zoo ntawm UD yog nws txoj kev ua haujlwm. UD poob sib nrug yooj yim thaum layup vim nws tsis muaj interlaced fibers los tuav nws ua ke. Yog hais tias cov fibers muab tso rau tsis raug, nws yuav luag tsis yooj yim sua kom reorient lawv kom raug dua. Machined qhov chaw ua los ntawm UD fabrics tuaj yeem ua teeb meem. Yog hais tias cov fibers raug rub mus rau qhov twg lub feature raug txiav, cov xoob fibers yuav raug rub mus rau tag nrho txoj kev los ntawm ib feem. Feem ntau, yog tias cov khoom siv UD raug xaiv rau layup, ib txheej ntawm woven cov ntaub yog siv rau thawj thiab zaum kawg khaubncaws sab nraud povtseg los txhim kho processability thiab ib feem durability. Qhov no yog qhov hobbyist drone thav duab ua txhua txoj hauv kev rau cov khoom siv foob pob hluav taws.