izindaba

1. Amandla okudonsa
Amandla okuthamba yingcindezi ephezulu kakhulu into engamelana nayo ngaphambi kokwelula. Ezinye izinto ezingaqinile ziyaguquguquka ngaphambi kokuqhekeka, kodwaImicu ye-Kevlar® (aramid), imicu yekhabhoni, kanye nemicu ye-E-glass iyaphuka futhi iyaqhekeka futhi ayinakuguquguquka okuningi. Amandla okudonsa alinganiswa njengamandla ngendawo ngayinye (ama-Pa noma ama-Pascal).

2. Ubuningi kanye nesilinganiso samandla kuya kwesisindo
Uma kuqhathaniswa ubuningi bezinto ezintathu, umehluko omkhulu kumafayibha amathathu ungabonakala. Uma kwenziwa amasampula amathathu anobukhulu nesisindo esifanayo, kuba sobala ngokushesha ukuthi amafayibha e-Kevlar® alula kakhulu, kanti amafayibha e-carbon aseduze kakhulu futhiImicu yengilazi ye-Eesinzima kakhulu.

3. I-Young's Modulus
I-modulus ka-Young iyisilinganiso sokuqina kwezinto ezinwebekayo futhi iyindlela yokuchaza izinto. Ichazwa njengesilinganiso sokucindezeleka kwe-uniaxial (ngakwesinye isiqondiso) kuya ku-uniaxial strain (ukuguquka ngakwesinye isiqondiso). I-modulus ka-Young = ukucindezeleka/ukucindezeleka, okusho ukuthi izinto ezine-modulus ka-Young ephezulu ziqinile kunezo ezine-modulus ka-Young ephansi.
Ukuqina kwe-carbon fiber, i-Kevlar®, kanye ne-glass fiber kuyahlukahluka kakhulu. I-carbon fiber iqine ngokuphindwe kabili kune-aramid fibers futhi iqine ngokuphindwe kahlanu kune-glass fibers. Inkinga yokuqina okuhle kwe-carbon fiber ukuthi ivame ukuba buthakathaka kakhulu. Uma yehluleka, ivame ukungabonisi ukucindezeleka noma ukuguquka okukhulu.

4. Ukusha kanye nokuwohloka kokushisa
Kokubili i-Kevlar® kanye ne-carbon fiber kuyamelana namazinga okushisa aphezulu, futhi akukho okunye okuncibilika. Zombili izinto zisetshenziswe ezingutsheni zokuzivikela kanye nezindwangu ezingashi. I-fiberglass izogcina incibilikile, kodwa futhi imelana kakhulu namazinga okushisa aphezulu. Yiqiniso, imicu yengilazi eqandisiwe esetshenziswa ezakhiweni ingakhulisa ukumelana nomlilo.
I-carbon fiber kanye ne-Kevlar® zisetshenziselwa ukwenza izingubo zokucisha umlilo noma zokushisela. Amagilavu ​​​​e-kevlar avame ukusetshenziswa embonini yenyama ukuvikela izandla lapho kusetshenziswa imimese. Njengoba imicu ingavamile ukusetshenziswa yodwa, ukumelana nokushisa kwe-matrix (ngokuvamile i-epoxy) nakho kubalulekile. Uma ishiswa, i-epoxy resin ithamba ngokushesha.

5. Ukuqhuba Ugesi
I-carbon fiber iqhuba ugesi, kodwa i-Kevlar® kanyei-fiberglassungakwenzi. I-Kevlar® isetshenziselwa ukudonsa izintambo emibhoshongweni yokudlulisa. Nakuba ingahambisi ugesi, imunca amanzi futhi amanzi ayaqhuba ugesi. Ngakho-ke, ukugqoka okungangeni manzi kumele kufakwe ku-Kevlar kulezi zicelo.

6. Ukuwohloka kwe-UV
Imicu ye-Aramidkuzowohloka elangeni nasezindaweni ezine-UV ephezulu. Imicu yekhabhoni noma yengilazi ayizweli kakhulu emisebeni ye-UV. Kodwa-ke, amanye ama-matrices avamile njenge-epoxy resins agcinwa elangeni lapho ezomhlophe khona futhi alahlekelwe amandla. Ama-polyester kanye nama-vinyl ester resins amelana kakhulu ne-UV, kodwa abuthakathaka kune-epoxy resins.

7. Ukumelana nokukhathala
Uma ingxenye igobile futhi iqondiswa ngokuphindaphindiwe, ekugcineni izohluleka ngenxa yokukhathala.I-carbon fibreiyazwela kancane ekukhathaleni futhi ivame ukwehluleka ngendlela exakile, kanti iKevlar® imelana kakhulu nokukhathala. I-Fiberglass iphakathi nendawo.

8. Ukumelana nokuguguleka
I-Kevlar® imelana kakhulu nokuklwebheka, okwenza kube nzima ukuyisika, futhi enye yezindlela ezivamile zokusebenzisa i-Kevlar® iwukuba amagilavu ​​​​okuvikela ezindaweni lapho izandla zingase zisikwe khona ngengilazi noma lapho kusetshenziswa khona ama-blade abukhali. Imicu yekhabhoni nengilazi ayimelani kakhulu.

9. Ukumelana namakhemikhali
Imicu ye-Aramidziyazwela kuma-asidi aqinile, izisekelo kanye nama-oxidizing agents athile (isb., i-sodium hypochlorite), okungabangela ukuwohloka kwefayibha. I-chlorine bleach ejwayelekile (isb. i-Clorox®) kanye ne-hydrogen peroxide azikwazi ukusetshenziswa ne-Kevlar®. I-oxygen bleach (isb. i-sodium perborate) ingasetshenziswa ngaphandle kokulimaza imicu ye-aramid.

10. Izakhiwo zokubopha umzimba
Ukuze imicu yekhabhoni, i-Kevlar® kanye nengilazi zisebenze kahle, kumele zigcinwe endaweni yazo ku-matrix (ngokuvamile i-epoxy resin). Ngakho-ke, ikhono le-epoxy lokubopha emicu eyahlukene libalulekile.
Kokubili ikhabhoni kanyeimicu yengilaziinganamathela kalula ku-epoxy, kodwa isibopho se-aramid fiber-epoxy asiqinile njengoba kufunwa, futhi lokhu kunamathela okuncishisiwe kuvumela ukungena kwamanzi. Ngenxa yalokho, ukulula kokumunca amanzi kwe-aramid fiber, kuhlangene nokunamathela okungafuneki ku-epoxy, kusho ukuthi uma ubuso be-kevlar® composite bonakalisiwe futhi amanzi angangena, khona-ke i-Kevlar® ingamunca amanzi ngezintambo futhi yenze buthaka i-composite.

11. Faka umbala futhi uluke
I-Aramid iyigolide elikhanyayo esimweni sayo semvelo, ingafakwa umbala futhi manje iza ngemibala eminingi emihle. I-Fiberglass nayo iza ngezinhlobo ezinemibala.I-carbon fibreimnyama njalo futhi ingaxutshwa ne-aramid enemibala, kodwa ayikwazi ukupendwa ngokwayo.