Eminyakeni yamuva nje, kube nokuthuthuka okusheshayo kwe-fiber-reinforcedizinhlanganisela ze-thermoplastic ngama-thermoplastic resins njenge-matrix, futhi kukhona ukwanda kocwaningo nokuthuthukiswa kwalezi zinhlanganisela ezisebenza kahle emhlabeni wonke. Izinhlanganisela ze-Thermoplastic ziyinhlanganisela eyenziwe ngama-polymers ashisayo njenge-polyethylene (PE), i-polyamide (PA), i-polyphenylene sulfide (PPS), i-polyetherimide (PEI), i-polyether ketone (PEKK) kanye ne-polyether ether ketone (PEEK) njenge-matrix kanye nezinhlobonhlobo eziqhubekayo / ezingapheli. imicu (isb. imicu ye-carbon, imicu yengilazi, imicu ye-aramid, njll.
Izinhlanganisela ezisekelwe kugrisi we-Thermoplastic ikakhulukazi i-Long Fiber reinforced Thermoplastics (LFT), amateyipu e-MT aqhubekayo afakwe ngaphambili kanye nomata wengilazi oqiniswe yi-Thermoplastics(CMT).
Ngokuhambisana nokusetshenziswa kwezidingo ezihlukene, i-resin matrix ine-PPE.PAPRT, PELPCPES, PEEKPI, PA kanye namanye amapulasitiki obunjiniyela be-thermoplastic.
I-matrix ye-Thermoplastic
I-matrix ye-Thermoplastic iwuhlobo lwempahla ye-thermoplastic enezakhiwo ezinhle zemishini nokumelana nokushisa okungasetshenziswa ezinhlobonhlobo zemikhiqizo yezimboni. I-Thermoplastic matrix inamandla aphezulu, ukumelana nokushisa nokumelana nokugqwala okuhle.
Izinsalela ze-thermoplastic okwamanje ezisetshenziswa ekusetshenzisweni kwe-aerospace ikakhulukazi izinga lokushisa eliphezulu, izinga eliphezulu le-resin matrices, kufaka phakathi i-PEEK, i-PPS ne-PEI, lapho i-amorphous PEI isetshenziswa kakhulu ekusetshenzisweni kwe-aerospace kune-semi-crystalline PPS ne-PEEK, okuyi-PEI e-amorphous. inezinhlelo zokusebenza eziningi ezakhiweni zendiza kune-semi-crystalline PPS kanye nezinga lokushisa eliphakeme le-PEEK ngenxa yezinga lokushisa eliphansi lokucubungula kanye nezindleko zokucubungula.
Izinhlayiya ze-Thermoplastic zinezakhiwo ezingcono zemishini kanye nokumelana namakhemikhali, izinga lokushisa eliphakeme lesevisi, amandla athile aphezulu nobulukhuni, ukuqina okuhle kakhulu kokuphuka nokubekezelela umonakalo, ukumelana nokukhathala okuhle kakhulu, amandla okubumba amajiyometri nezakhiwo eziyinkimbinkimbi, ukuguquguquka kwe-thermal okulungiswayo, ukuphinda kusetshenziswe kabusha, ukuzinza okuhle ezindaweni ezinokhahlo. , ukubumba okuphindaphindiwe, nokushisela, njll.
Izinhlanganisela eyakhiwe nge-thermoplastic resin kanye nezinto eziqinisayo zinezinzuzo eziningi njengokuqina, ukuqina okuphezulu, ukumelana nomthelela ophezulu kanye nokubekezelela umonakalo; i-fiber prepreg ayidingi ukugcinwa ekushiseni okuphansi futhi, isikhathi sokugcina se-prepreg esingenamkhawulo; iDemo ukubumba umjikelezo, weldable, umkhiqizo okusezingeni eliphezulu, kulula ukulungisa; izinsalela zingagaywa kabusha futhi zisetshenziswe kabusha; inkululeko enkulu yokwakhiwa komkhiqizo, ingenziwa ibe yizimo eziyinkimbinkimbi, ukuguquguquka kokubumba okubanzi, njll.
Ukuqinisa impahla
Ngokuvamile, ubude bemicu emifushane eqinisiwe yi-fiber engu-0.2 kuya ku-0.6 mm, futhi njengoba imicu eminingi ingaphansi kuka-70 μm ububanzi, ngakho-ke imicu emifushane ibukeka njengempushana. Ama-thermoplastics aqiniswe ngefayibha emifushane ngokuvamile akhiqizwa ngokuxuba imicu ibe yi-thermoplastic encibilikisiwe. Ubude nokuma okungahleliwe kwamafayibha ku-matrix kwenza kube lula ukuzuza ukumanzisa okuhle, futhi izinhlanganisela zefayibha emfishane kulula kakhulu ukuzenza uma kuqhathaniswa nezinto eziqiniswe ngefayibha ende futhi eqhubekayo, kodwa ngokuthuthukiswa okuncane kakhulu kwezakhi zomshini. Izinhlanganisela zefiber emifushane zijwayele ukwakheka zibe izingxenye zokugcina ngokubunjwa noma izindlela zokukhipha ngenxa yokuthi imicu emifushane inomthelela omncane ekugelezeni.
Izinhlanganisela eziqiniswe ngefiber ende ngokuvamile zilinganiselwa ku-20 mm ubude befayibha futhi zivame ukulungiswa kusetshenziswa imicu eqhubekayo efakwe ngenhlaka bese isikwa ibe ubude obuthile. Inqubo evame ukusetshenziswa yinqubo yokubumba i-pultrusion, lapho ukuzulazula okuqhubekayo kwengxube yemicu kanye ne-thermoplastic resin kukhiqizwa ngokwelula imicu ngokusebenzisa idayi lokubumba elikhethekile. Njengamanje, izinhlanganisela ezinde ze-PEEK ze-thermoplastic eziqiniswe ngefayibha zingafinyelela izakhiwo zesakhiwo ezingaphezu kuka-200 MPa ngokuphrinta kwe-FDM kanye nemodulus engaphezu kuka-20 GPa, ngokusebenza okungcono ngokubumba umjovo.
Imicu emikhakheni eqhubekayo eqiniswe nge-fiber "iyaqhubeka" futhi isukela ngobude ukusuka kumamitha ambalwa ukuya kumamitha ayizinkulungwane ezimbalwa. Izinhlanganisela ze-fiber eziqhubekayo ngokuvamile zitholakala njengama-laminates, amateyipu angaphambi kokukhulelwa, noma ama-braids, akhiwe ngokufaka i-matrix ye-thermoplastic efiselekayo ngemicu eqhubekayo.
Yiziphi izici zezinto eziyinhlanganisela eziqiniswa ngemicu?
Izinhlanganisela eziqiniswe nge-fiber ziyizinhlanganisela ezakhiwe yizinqubo zokusonta, ukubumba noma i-pultrusion yezinto eziqinisa ifayibha, njengefayibha yengilazi, i-carbon fibre, i-aramid fibre, njll., kanye nempahla ye-matrix. Ngokusho kwezinto eziqinisayo ezihlukene, izinhlanganisela ezijwayelekile ze-fiber-reinforced zihlukaniswa zibe izinhlanganisela zengilazi ze-fiber reinforced (GFRP), izinhlanganisela ze-carbon fibre reinforced (CFRP) kanye nezinhlanganisela ze-aramid fibre reinforced (AFRP).
Ngenxa yezici ezilandelayo zezinhlanganisela ze-fiber-reinforced:
(1) amandla aphezulu kanye ne-modulus ephezulu;
(2) ukuklama kwezakhiwo ezibonakalayo;
(3) ukumelana nokugqwala okuhle nokuqina;
(4) i-coefficient yokunwetshwa kwe-thermal efana naleyo kakhonkolo.
Lezi zici zenzaIzinto zokwakha ze-FRPingahlangabezana nezidingo zezakhiwo zesimanje ukuya ku-span enkulu, imibhoshongo, umthwalo osindayo, isisindo esincane namandla aphezulu, futhi isebenze ngaphansi kwezimo ezinzima, futhi ihlangabezane nezidingo zokuthuthukiswa kokwakhiwa kwezakhiwo zezimboni zesimanje, ngakho-ke isetshenziswa kabanzi. ezakhiweni ezihlukahlukene zomphakathi, amabhuloho, imigwaqo emikhulu, ezasolwandle, ezakhiweni ze-hydraulic kanye nezakhiwo ezingaphansi komhlaba.
Chofoza laphaukuze uthole ulwazi olwengeziwe ngezinto ezihlanganisiwe mayelanaI-GRECHO Fiberglass
Isikhathi sokuthumela: Mar-31-2023
