Ugereranije nicyuma, ibirahuri bya fibre byongerewe ibikoresho bifite ibikoresho byoroheje kandi ubucucike buri munsi ya kimwe cya gatatu cyibyuma.Ariko, kubijyanye nimbaraga, mugihe imihangayiko igeze kuri 400MPa, ibyuma byibyuma bizahura numusaruro utanga umusaruro, mugihe imbaraga zingana zibirahuri bya fibre yibikoresho bishobora kugera kuri 1000-2500MPa.Ugereranije nibikoresho gakondo byuma, ibikoresho bya fibre fibre yibikoresho bifite imiterere itandukanye hamwe na anisotropy igaragara, hamwe nuburyo bukomeye bwo kunanirwa.Ubushakashatsi bwubushakashatsi nubushakashatsi muburyo butandukanye bwimitwaro irashobora gutanga ibisobanuro birambuye kumiterere yubukanishi bwabo, cyane cyane iyo bikoreshwa mubice nkibikoresho byigihugu birwanira mu kirere hamwe n’ikirere, bisaba ubushakashatsi bwimbitse kubiranga n'imiterere yubukanishi kugirango babone ibyo bakeneye muri imikoreshereze y'ibidukikije.
Ibikurikira byerekana imiterere yubukanishi hamwe nisesengura ryangirika ryibikoresho bya fibre yibikoresho, bitanga ubuyobozi mugukoresha ibi bikoresho.
(1) Imiterere ya Tensile hamwe nisesengura:
Ubushakashatsi bwerekanye ko imiterere yubukorikori bwa fibre fibre yongerewe imbaraga epoxy resin yibikoresho byerekana ko imbaraga zingana zingana nicyerekezo kibangikanye nikintu kinini cyane kuruta icyerekezo cyerekezo cya fibre.Kubwibyo, mugukoresha mubikorwa, icyerekezo cya fibre yikirahure kigomba guhorana ibishoboka byose hamwe nicyerekezo cya tensile, ukoresheje byimazeyo ibintu byiza cyane.Ugereranije nicyuma, imbaraga zingana ziri hejuru cyane, ariko ubucucike buri hasi cyane ugereranije nibyuma.Birashobora kugaragara ko, Imiterere yubukorikori yuzuye yibirahuri fibre yibikoresho biri hejuru cyane.
Ubushakashatsi bwerekanye ko kongera ingano ya fibre yibirahuri byongewe kubikoresho bya thermoplastique bigenda byiyongera buhoro buhoro imbaraga zingirakamaro yibikoresho.Impamvu nyamukuru nuko uko ibirahuri bya fibre byiyongera, fibre nyinshi yibirahuri mubikoresho bigizwe nimbaraga zo hanze.Muri icyo gihe, kubera ubwiyongere bw’umubare w’ibirahure, matrix ya resin hagati ya fibre yikirahure iba yoroheje, ibyo bikaba bifasha cyane kubaka fibre yibirahure ikomezwa.Kubwibyo, Ubwiyongere bwibintu bya fibre yibirahure bitera guhangayikishwa cyane no kuva mubisigazwa kugeza kuri fibre yikirahure mubikoresho bikomatanyije munsi yimitwaro yo hanze, bikazamura neza imiterere yabyo.
Ubushakashatsi bwakorewe ibizamini bya fibre fibre idahagije polyester yibikoresho byerekanye ko uburyo bwo kunanirwa kwa fibre fibre yibikoresho byongeweho ari uguhuza kunanirwa kwa fibre na resin matrix binyuze muri scanning electron microscopi igice cya tensile.Ubuso bwavunitse bwerekana ko umubare munini wibirahure byikirahure bivanwa muri materique ya resin ku gice cya tensile, kandi ubuso bwikirahure cyibirahure bwakuwe muri matrike ya resin biroroshye kandi bifite isuku, hamwe nibice bike cyane bya resin bifatanye hejuru. ya fibre fibre, Imikorere ni kuvunika.Mugutezimbere imiyoboro ihuza ibirahuri bya fibre na resin, ubushobozi bwo gushira byombi byongerewe.Ku gice cya tensile, igice kinini cya matrix resin ibice hamwe no guhuza fibre yibirahure birashobora kugaragara.Ibindi byo gukurikiranira hafi byerekana ko umubare munini wa matrix resin ihuza hejuru ya fibre yikirahure yakuweho kandi ikerekana ibimamara nka gahunda.Ubuso bwavunitse bwerekana kuvunika, bishobora kugera kubintu byiza bya mashini.
(2) Kunama imikorere no gusesengura:
Ibizamini bitatu byo kunaniza umunaniro byakorewe ku byapa biterekanijwe hamwe na resin yo guteramo ibirahuri bya fibre fibre ikomezwa na epoxy resin ibikoresho.Ibisubizo byerekanaga ko gukomera kunamye byombi byakomeje kugabanuka hamwe no kwiyongera kwumunaniro.Nyamara, kunama gukomera kwa fibre yibirahure byashimangiwe ibyapa biterekejwe hejuru byari hejuru cyane kuruta iy'imibiri yajugunywe, kandi igabanuka ryikigero cyo kunama ryatinze.Hariho ibihe byinshi byo kunanirwa byacitse bigaragara mugihe, byerekana ko fibre yikirahure igira ingaruka nziza kumikorere ya matrix.
Hamwe no kwinjiza fibre yibirahure no kwiyongera gahoro gahoro kugabanura amajwi, imbaraga zo kugonda ibikoresho byahujwe nabyo byiyongera bikwiranye.Iyo agace ka fibre kagabanutse ni 50%, imbaraga zayo zo kugonda nizo zisumba izindi, zikaba zisumba 21.3% kurenza imbaraga zumwimerere.Nyamara, iyo fibre yububiko bwa fibre ari 80%, imbaraga zo kugunama kwibikoresho byerekana igabanuka rikomeye, riri munsi yimbaraga zicyitegererezo zidafite fibre.Muri rusange abantu bemeza ko, Imbaraga nke zibikoresho zishobora guterwa na microcrake imbere nubusa bibuza ihererekanyabubasha ryimitwaro binyuze muri matrike kuri fibre, kandi munsi yimbaraga zo hanze, microcrack yaguka vuba kugirango ikore amakosa, amaherezo ikangiza. Guhuza Imigaragarire yibi bikoresho bya fibre yibikoresho cyane cyane bishingiye kumyuka ya viscous ya fibre fibre ya fibre yubushyuhe bwo hejuru kugirango izenguruke fibre, kandi fibre yibirahure ikabije ibuza cyane urujya n'uruza rwa matrix, bigatera urwego runaka rwangirika kubikomeza hagati Imigaragarire.
(3) Imikorere yo kurwanya abinjira:
Gukoresha fibre ikomeye yibirahure fibre ishimangira ibikoresho byo mumaso hamwe ninyuma yintwaro za reaction zifite imbaraga zo kwinjira cyane ugereranije nicyuma gakondo.Ugereranije nicyuma kivanze, ibirahuri bya fibre yibikoresho byo mumaso ninyuma yintwaro ziturika zifite uduce duto dusigara nyuma yo guturika, nta bushobozi bwo kwica, kandi birashobora gukuraho igice cyubwicanyi bwakabiri bwintwaro ziturika.
Igihe cyo kohereza: Ugushyingo-07-2023
