izindaba

1. Amandla okuqina
Amandla aqinile ingcindezi enkulu impahla engamelana nayo ngaphambi kokwelula. Ezinye izinto ezingezona i-brittle ziyawohloka ngaphambi kokugqashuka, kodwaI-Kevlar® (aramid) imicu, imicu ye-carbon, nemicu ye-E-glass intekenteke futhi igqabuka futhi ishintshashintsha kancane. Amandla okuqina akalwa njengamandla endaweni ngayinye yeyunithi (Pa noma Pascals).

2. Ukuminyana kanye ne-Strength-to-weight Ratio
Uma kuqhathaniswa ukuminyana kwezinto ezintathu, umehluko omkhulu emicubu emithathu ungabonakala. Uma kwenziwa amasampula amathathu anobukhulu obufana ncamashi nesisindo, kusheshe kubonakale ukuthi imicu ye-Kevlar® ilula kakhulu, i-carbon fibers isondele ngomzuzwana futhiI-E-glass fibersesinda kakhulu.

3. I-Modulus Yentsha
I-Young's modulus isilinganiso sokuqina kwento enwebekayo futhi iyindlela yokuchaza into. Ichazwa njengesilinganiso se-uniaxial (ngasohlangothini olulodwa) ukucindezeleka ku-uniaxial strain (ukuguqulwa ngendlela efanayo). I-Young's modulus = i-stress/strain, okusho ukuthi izinto ezine-modulus ye-Young ephezulu ziqinile kunalezo ezinemoduli ye-Young ephansi.
Ukuqina kwe-carbon fibre, i-Kevlar®, ne-glass fiber kuyahluka kakhulu. Ifayibha yekhabhoni icishe iqine ngokuphindwe kabili kunemicu ye-aramid futhi iqine ngokuphindwe kahlanu kunemicu yengilazi. Ububi bokuqina okuhle kakhulu kwe-carbon fiber ukuthi ivame ukuba brittle. Uma ihluleka, ivame ukungabonisi ubunzima noma ukuguqulwa okukhulu.

4. Ukuvutha nokuwohloka kokushisa
Kokubili i-Kevlar® kanye ne-carbon fiber imelana nezinga lokushisa eliphezulu, futhi ayinayo indawo yokuncibilika. Zombili izinto ezisetshenziswayo zisetshenziswe ezingutsheni ezivikelayo nasezindwangu ezingashi. I-fiberglass izogcina incibilika, kodwa futhi imelana kakhulu namazinga okushisa aphezulu. Yiqiniso, imicu yengilazi eqhwa esetshenziswa ezakhiweni ingandisa ukumelana nomlilo.
I-Carbon fiber kanye ne-Kevlar® kusetshenziselwa ukwenza izingubo zokuvikela umlilo noma zokushisela izingubo noma izingubo. 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. Lapho kushisa, i-epoxy resin ithambisa ngokushesha.

5. I-Electric Conductivity
I-Carbon fiber yenza ugesi, kodwa i-Kevlar® kanyei-fiberglassungakwenzi.I-Kevlar® isetshenziselwa ukudonsa izintambo emibhoshongweni yokudlulisela. Nakuba ingawuhambisi ugesi, imunca amanzi futhi amanzi ayawuhambisa ugesi. Ngakho-ke, i-coating engangeni manzi kufanele ifakwe ku-Kevlar kulezi zicelo.

6. Ukonakala kwe-UV
Imicu ye-Aramidizokwehlisa izinga elangeni nasezindaweni eziphakeme ze-UV. Imicu yekhabhoni noma yengilazi ayizweli kakhulu emisebeni ye-UV. Kodwa-ke, amanye ama-matrices ajwayelekile afana nama-epoxy resins agcinwa ekukhanyeni kwelanga lapho azojika abe mhlophe futhi alahlekelwe amandla. I-polyester ne-vinyl ester resins imelana kakhulu ne-UV, kodwa ibuthakathaka kune-epoxy resins.

7. Ukumelana nokukhathala
Uma ingxenye igotshwa ngokuphindaphindiwe futhi iqondiswe, ekugcineni iyohluleka ngenxa yokukhathala.I-carbon fiberizwela kancane ekukhathaleni futhi ivamise ukwehluleka ngendlela eyinhlekelele, kuyilapho i-Kevlar® imelana kakhulu nokukhathala. I-Fiberglass isendaweni ethile phakathi.

8. Ukumelana nemihuzuko
I-Kevlar® imelana kakhulu nokuhuzuka, okwenza kube nzima ukuyisika, futhi enye yezinto ezivame ukusetshenziswa i-Kevlar® njengamagilavu okuvikela izindawo lapho izandla zingasikwa khona ngengilazi noma lapho kusetshenziswa izindwani ezicijile. Imicu yekhabhoni nengilazi imelana kancane.

9. Ukumelana namakhemikhali
Imicu ye-Aramidziyazwela kuma-acids aqinile, izisekelo kanye nama-oxidizing agents (isb., i-sodium hypochlorite), engabangela ukuwohloka kwe-fiber. I-chlorine bleach evamile (isb. i-Clorox®) ne-hydrogen peroxide ayikwazi ukusetshenziswa ne-Kevlar®. I-oxygen bleach (isb. i-sodium perborate) ingasetshenziswa ngaphandle kokulimaza imicu ye-aramid.

10. Izakhiwo zokubopha umzimba
Ukuze imicu ye-carbon, i-Kevlar® nengilazi isebenze kahle, kufanele igcinwe endaweni ye-matrix (imvamisa i-epoxy resin). Ngakho-ke, ikhono le-epoxy lokubopha imicu ehlukahlukene libalulekile.
Kokubili i-carbon kanyeimicu yengilaziinganamathela kalula ku-epoxy, kodwa isibopho se-aramid fibre-epoxy asinamandla ngendlela efunwa ngayo, futhi lokhu kunamathela okuncishisiwe kuvumela ukungena kwamanzi ukuthi kwenzeke. Ngenxa yalokho, ukukhululeka lapho imicu ye-aramid ingakwazi ukumunca amanzi, kuhlanganiswe nokunamathela okungafuneki ku-epoxy, kusho ukuthi uma indawo engaphezulu ye-kevlar® composite yonakaliswa futhi amanzi angangena, khona-ke i-Kevlar® ingase imunce amanzi eduze kwemicu bese yenza inhlanganisela ibe buthaka.

11. Faka umbala nokuluka
I-Aramid iyigolide elikhanyayo esimweni sayo semvelo, ingaba nombala futhi manje iza ngamathunzi amaningi amahle. I-Fiberglass nayo iza ngezinguqulo ezinemibala.I-carbon fiberihlale imnyama futhi ingahlanganiswa ne-aramid enombala, kodwa ayikwazi ukufakwa umbala ngokwayo.