iindaba

1. Amandla okuxinana
Amandla okutsalwa luxinzelelo olukhulu olunokumelana nezinto ngaphambi kokuba zolulwe. Ezinye izinto ezingaqinanga ziyaguquguquka ngaphambi kokuba ziqhekeke, kodwaIifayibha zeKevlar® (aramid), iifayibha zekhabhoni, kunye neefayibha ze-E-glass zibuthathaka kwaye ziyaqhekeka kwaye azinanguquko ingako. Amandla okuxinana alinganiswa njengamandla ngokwendawo nganye (iiPa okanye iiPascals).

2. Ubuninzi kunye nomlinganiselo wamandla ukuya kubunzima
Xa kuthelekiswa ubuninzi bezinto ezintathu, umahluko omkhulu kwiifayibha ezintathu unokubonwa. Ukuba kwenziwa iisampulu ezintathu ezinobukhulu obufanayo kunye nobunzima, kuyacaca ngokukhawuleza ukuba iifayibha zeKevlar® zilula kakhulu, kwaye iifayibha zekhabhoni zisondele kakhulu kwayeIifayibha zeglasi ye-eeyona inzima.

3. Imodulus kaYoung
I-modulus kaYoung yindlela yokulinganisa ukuqina kwezinto ezithambileyo kwaye yindlela yokuchaza izinto. Ichazwa njengomlinganiselo woxinzelelo lwe-uniaxial (kwicala elinye) kuxinzelelo lwe-uniaxial (ukuguquka kwicala elinye). I-modulus kaYoung = uxinzelelo/uxinzelelo, oko kuthetha ukuba izinto ezine-modulus ephezulu kaYoung ziqinile kunezo zine-modulus ephantsi kaYoung.
Ukuqina kwe-carbon fiber, i-Kevlar®, kunye ne-glass fiber kwahluka kakhulu. I-carbon fiber iqine ngokuphindwe kabini kune-aramid fibers kwaye iqine ngokuphindwe kahlanu kune-glass fibers. Ingxaki yokuqina okugqwesileyo kwe-carbon fiber kukuba ithambekele ekubeni buthathaka ngakumbi. Xa ingaphumeleli, ayibonakalisi xinzelelo okanye ukuguquka okukhulu.

4. Ukutsha kunye nokuwohloka kobushushu
Zombini iKevlar® kunye ne-carbon fiber ziyamelana namaqondo obushushu aphezulu, kwaye akukho nanye kuzo enokunyibilika. Zombini ezi zinto zisetyenzisiwe kwiimpahla zokukhusela kunye neempahla ezingatshiyo. I-fiberglass ekugqibeleni iya kunyibilika, kodwa ikwamelana namaqondo obushushu aphezulu. Kakade ke, iifayibha zeglasi ezifakwe iqhwa ezisetyenziswa kwizakhiwo nazo zinokwandisa ukumelana nomlilo.
I-carbon fiber kunye ne-Kevlar® zisetyenziselwa ukwenza iingubo zokukhusela umlilo okanye zokuwelda okanye iimpahla. Iiglavu ze-kevlar zihlala zisetyenziswa kwishishini lenyama ukukhusela izandla xa kusetyenziswa iimela. Ekubeni iifayibha zingafane zisetyenziswe zodwa, ukumelana nobushushu be-matrix (ngokuqhelekileyo i-epoxy) nako kubalulekile. Xa ishushu, i-epoxy resin ithamba ngokukhawuleza.

5. Ukuqhuba koMbane
I-carbon fiber iqhuba umbane, kodwa iKevlar® kunyei-fiberglassmusa. IKevlar® isetyenziselwa ukutsala iingcingo kwiinqaba zothumelo. Nangona ingaqhubi umbane, ifunxa amanzi kwaye amanzi ayaqhubi umbane. Ke ngoko, kufuneka kufakwe upende ongangeni manzi kwiKevlar kwezo zicelo.

6. Ukonakala kwe-UV
Iifayibha ze-Aramidiya konakala xa ilanga likhanya nakwiindawo ezine-UV ephezulu. Iifayibha zekhabhoni okanye zeglasi azichaphazeleki kakhulu yimitha ye-UV. Nangona kunjalo, ezinye ii-matrices eziqhelekileyo ezifana nee-epoxy resins zigcinwa xa ilanga likhanya apho liya kuba mhlophe kwaye lilahlekelwe ngamandla. Ii-polyester kunye nee-vinyl ester resins ziyakwazi ukumelana ne-UV, kodwa zibuthathaka kunee-epoxy resins.

7. Ukumelana nokudinwa
Ukuba inxalenye igobile kwaye iqondile ngokuphindaphindiweyo, ekugqibeleni iya kusilela ngenxa yokudinwa.Ifayibha yekhabhoniIkhawuleza kancinci xa idinwa kwaye ithanda ukusilela kakhulu, ngelixa iKevlar® ikwazi ukumelana nokudinwa. I-Fiberglass iphakathi.

8. Ukumelana nokurhawuzelelwa
IKevlar® ayimelani kakhulu nokukrweleka, nto leyo eyenza kube nzima ukuyisika, kwaye enye yeendlela eziqhelekileyo zokusebenzisa iKevlar® kukukhusela iindawo apho izandla zinokunqunyulwa khona ngeglasi okanye apho kusetyenziswa khona iibhleyidi ezibukhali. Iifayibha zekhabhoni nezeglasi azimelani kangako.

9. Ukumelana neekhemikhali
Iifayibha ze-AramidZiyazwela kwii-asidi ezinamandla, ii-bases kunye nee-oxidizing agents ezithile (umz., i-sodium hypochlorite), ezinokubangela ukubola kwefayibha. I-chlorine bleach eqhelekileyo (umz. iClorox®) kunye ne-hydrogen peroxide azinakusetyenziswa neKevlar®. I-oxygen bleach (umz. i-sodium perborate) ingasetyenziswa ngaphandle kokonakalisa ii-aramid fibers.

10. Iimpawu zokubopha umzimba
Ukuze iifayibha zekhabhoni, iKevlar® kunye neglasi zisebenze kakuhle, kufuneka zibanjwe kwindawo yazo kwi-matrix (ngesiqhelo i-epoxy resin). Ke ngoko, amandla e-epoxy okubopha kwiifayibha ezahlukeneyo abalulekile.
Zombini ikhabhoni kunyeiifayibha zeglasiinokunamathela ngokulula kwi-epoxy, kodwa i-aramid fiber-epoxy bond ayinamandla njengoko bekufunwa, kwaye oku kuncitshiswa kokunamathela kuvumela ukungena kwamanzi. Ngenxa yoko, ukulula kwendlela ii-aramid fibers ezinokufunxa ngayo amanzi, kunye nokunamathela okungafunekiyo kwi-epoxy, kuthetha ukuba ukuba umphezulu we-kevlar® composite wonakele kwaye amanzi anokungena, iKevlar® inokufunxa amanzi ecaleni kwee-fibers kwaye yenze buthathaka i-composite.

11. Faka umbala kwaye uluke
I-Aramid yigolide ekhaphukhaphu kwimeko yayo yendalo, ingafakwa umbala kwaye ngoku iza ngemibala emininzi emihle. I-Fiberglass ikwafumaneka ngemibala.Ifayibha yekhabhoniIhlala imnyama kwaye ingaxutywa ne-aramid enemibala, kodwa ayinakudityaniswa nayo ngokwayo.