Izinto ezihlanganisiwe zonke zihlanganiswe nemicu yokuqinisa kanye nezinto zepulasitiki. Indima ye-resin ezintweni ezihlanganisiwe ibalulekile. Ukukhetha i-resin kunquma uchungechunge lwezici zenqubo, ezinye izici zemishini kanye nokusebenza (izakhiwo zokushisa, ukusha, ukumelana kwemvelo, njll.), izakhiwo ze-resin nazo ziyisici esibalulekile ekuqondeni izakhiwo zemishini zezinto ezihlanganisiwe. Lapho i-resin ikhethwa, ifasitela elinquma ububanzi bezinqubo kanye nezakhiwo ze-composite linqunywa ngokuzenzakalelayo. I-resin ye-thermosetting iwuhlobo lwe-resin oluvame ukusetshenziswa kakhulu lwe-resin matrix composites ngenxa yokukhiqiza kwayo okuhle. Ama-resin e-thermoset cishe angoketshezi noma aqinile kancane ekushiseni kwegumbi, futhi ngokomqondo afana kakhulu nama-monomer akha i-thermoplastic resin kune-thermoplastic resin esimweni sokugcina. Ngaphambi kokuba ama-resin e-thermosetting alashwe, angacutshungulwa abe yizimo ezahlukahlukene, kodwa uma elashwe kusetshenziswa ama-curing agents, ama-initiators noma ukushisa, awakwazi ukwakheka futhi ngoba izibopho zamakhemikhali zakhiwa ngesikhathi sokupholisa, okwenza ama-molecule amancane aguqulwa abe ama-polymer aqinile axhumene nezinhlangothi ezintathu anesisindo sama-molecule aphezulu.
Kunezinhlobo eziningi zama-resin e-thermosetting, asetshenziswa kakhulu ama-resin e-phenolic,ama-resin epoxy, ama-resin e-bis-horse, ama-resin e-vinyl, ama-resin e-phenolic, njll.
(1) I-phenolic resin iyi-resin yokuqala yokushisa enokumelana okuhle, ukumelana okuhle nokushisa kanye nezakhiwo ze-dielectric ngemva kokuqina, futhi izici zayo ezivelele yizakhiwo ezinhle kakhulu zokuvimbela ilangabi, izinga eliphansi lokukhishwa kokushisa, ubuningi obuphansi bomusi, kanye nokusha. Igesi ekhishwayo ayinabo ubuthi obuncane. Ukucutshungulwa kuhle, futhi izingxenye zezinto ezihlanganisiwe zingakhiqizwa ngokubumba, ukugoqa, ukubekwa ngesandla, ukufutha, kanye nezinqubo ze-pultrusion. Inani elikhulu lezinto ezihlanganisiwe ezisekelwe ku-phenolic resin zisetshenziswa ezintweni zokuhlobisa zangaphakathi zezindiza zomphakathi.
(2)I-resin ye-Epoxyiyi-matrix yokuqala ye-resin esetshenziswa ezakhiweni zezindiza. Ibonakala ngezinto ezahlukahlukene. Ama-curing agents ahlukene kanye nama-accelerator angathola ububanzi bokushisa bokucupha kusukela ekushiseni kwegumbi kuya ku-180 ℃; inezakhiwo eziphakeme zemishini; Uhlobo oluhle lokufanisa ifayibha; ukumelana nokushisa nomswakama; ukuqina okuhle kakhulu; ukukhiqizwa okuhle kakhulu (ukumbozwa okuhle, i-resin viscosity emaphakathi, ukugeleza okuhle, i-bandwidth ecindezelwe, njll.); ifanelekela ukubumbana okuhlanganisa izingxenye ezinkulu; ishibhile. Inqubo enhle yokubumba kanye nokuqina okuvelele kwe-epoxy resin kwenza ithathe indawo ebalulekile ku-matrix ye-resin yezinto ezihlanganisiwe ezithuthukisiwe.
(3)I-resin ye-vinylIyaziwa njengenye yama-resin amahle kakhulu amelana nokugqwala. Ingamelana nama-acid amaningi, ama-alkali, izixazululo zikasawoti kanye nemidiya eqinile ye-solvent. Isetshenziswa kabanzi ekwenzeni amaphepha, embonini yamakhemikhali, kuma-elekthronikhi, kuphethiloli, ekugcinweni nasekuthuthweni, ekuvikelweni kwemvelo, emikhunjini, embonini yokukhanyisa izimoto. Inezici ze-polyester engagcwalisiwe kanye ne-epoxy resin, ngakho-ke inezakhiwo ezinhle kakhulu zemishini ye-epoxy resin kanye nokusebenza okuhle kwenqubo ye-polyester engagcwalisiwe. Ngaphezu kokumelana nokugqwala okuvelele, lolu hlobo lwe-resin luphinde lube nokumelana okuhle nokushisa. Luhlanganisa uhlobo olujwayelekile, uhlobo lokushisa okuphezulu, uhlobo oluvimbela ilangabi, uhlobo lokumelana nomthelela kanye nezinye izinhlobo. Ukusetshenziswa kwe-vinyl resin kupulasitiki eqiniswe ngefayibha (FRP) kusekelwe kakhulu ekubekeni ngesandla, ikakhulukazi ekusetshenzisweni kokulwa nokugqwala. Ngokuthuthuka kwe-SMC, ukusetshenziswa kwayo kulokhu nakho kuyabonakala kakhulu.
(4) I-resin ye-bismaleimide eguquliwe (ebizwa ngokuthi i-resin ye-bismaleimide) yakhelwe ukuhlangabezana nezidingo zama-fighter jets amasha e-composite resin matrix. Lezi zidingo zifaka: izingxenye ezinkulu namaphrofayili ayinkimbinkimbi ku-130 ℃ Ukukhiqizwa kwezingxenye, njll. Uma kuqhathaniswa ne-epoxy resin, i-resin ye-Shuangma ibonakala kakhulu ngomswakama ophezulu kanye nokumelana nokushisa kanye nokushisa okuphezulu kokusebenza; ububi ukuthi ukukhiqizwa akukuhle njenge-epoxy resin, futhi izinga lokushisa lokupholisa liphezulu (lidlula i-185 ℃), futhi lidinga izinga lokushisa elingu-200 ℃. Noma isikhathi eside ezingeni lokushisa elingaphezu kuka-200 ℃.
(5) I-Cyanide (qing diacoustic) ester resin ine-dielectric constant ephansi (2.8~3.2) kanye ne-dielectric loss tangent encane kakhulu (0.002~0.008), izinga lokushisa eliphakeme lokushintsha kwengilazi (240~290℃), Ukuncipha okuphansi, ukumuncwa komswakama okuphansi, izakhiwo ezinhle kakhulu zemishini kanye nezakhiwo zokubopha, njll., futhi inobuchwepheshe bokucubungula obufana ne-epoxy resin.
Njengamanje, ama-cyanate resins asetshenziswa kakhulu ezicini ezintathu: amabhodi wesekethe aphrintiwe wezinto zokwakha ezisheshayo zedijithali nezimvamisa eziphezulu, ezidlulisa amaza aphezulu kanye nezinto zokwakha ezihlanganisiwe ezisebenza kahle kakhulu zezindiza.
Kalula nje, i-epoxy resin, ukusebenza kwe-epoxy resin akuhlobene nje kuphela nezimo zokwenziwa, kodwa futhi kuncike kakhulu esakhiweni sama-molecule. Iqembu le-glycidyl ku-epoxy resin liyisigaba esiguquguqukayo, esinganciphisa i-viscosity ye-resin futhi sithuthukise ukusebenza kwenqubo, kodwa ngesikhathi esifanayo sinciphise ukumelana nokushisa kwe-resin ephulukisiwe. Izindlela eziyinhloko zokuthuthukisa izakhiwo zokushisa nezomshini zama-epoxy resin aphulukisiwe isisindo esiphansi sama-molecule kanye nokusebenza okuningi ukwandisa ubuningi be-crosslink nokungenisa izakhiwo eziqinile. Yiqiniso, ukwethulwa kwesakhiwo esiqinile kuholela ekunciphiseni kokuncibilika kanye nokwanda kwe-viscosity, okuholela ekunciphiseni ukusebenza kwenqubo ye-epoxy resin. Indlela yokuthuthukisa ukumelana nokushisa kohlelo lwe-epoxy resin iyisici esibaluleke kakhulu. Ngokombono we-resin kanye ne-ejenti yokwelapha, amaqembu asebenzayo kakhulu, kulapho ubuningi be-crosslinking bukhula khona. Lapho i-Tg iphezulu. Ukusebenza okuqondile: Sebenzisa i-epoxy resin noma i-ejenti yokwelapha enezici eziningi, sebenzisa i-epoxy resin ehlanzekile kakhulu. Indlela evame ukusetshenziswa ukwengeza ingxenye ethile ye-o-methyl acetaldehyde epoxy resin ohlelweni lokwelapha, olunemiphumela emihle kanye nezindleko eziphansi. Uma isisindo sama-molecule sikhulu, ukusatshalaliswa kwesisindo sama-molecule kuyancipha, futhi kulapho i-Tg iphakama khona. Ukusebenza okuqondile: Sebenzisa i-resin ye-epoxy esebenza ngemisebenzi eminingi noma i-ejenti yokwelapha noma ezinye izindlela ezinokusatshalaliswa kwesisindo sama-molecule okufanayo.
Njenge-matrix ye-resin esebenza kahle kakhulu esetshenziswa njenge-matrix ehlanganisiwe, izakhiwo zayo ezahlukahlukene, njengokusebenziseka kalula, izakhiwo ze-thermophysical kanye nezakhiwo zemishini, kumele zihlangabezane nezidingo zezicelo ezisebenzayo. Ukukhiqizwa kwe-matrix ye-resin kufaka phakathi ukuncibilika kwezinyibilikisi, i-viscosity encibilikayo (uketshezi) kanye nezinguquko ze-viscosity, kanye nokushintsha kwesikhathi sejeli ngokushisa (iwindi lenqubo). Ukwakheka kwe-resin kanye nokukhethwa kokushisa kokusabela kunquma i-kinetics yokusabela kwamakhemikhali (isilinganiso sokwelapha), izakhiwo ze-rheological zamakhemikhali (i-viscosity-temperature vs time), kanye ne-thermodynamics yokusabela kwamakhemikhali (i-exothermic). Izinqubo ezahlukene zinezidingo ezahlukene ze-viscosity ye-resin. Ngokuvamile, ngenqubo yokugoqa, i-viscosity ye-resin ngokuvamile icishe ibe ngu-500cPs; ngenqubo ye-pultrusion, i-viscosity ye-resin icishe ibe ngu-800 ~ 1200cPs; ngenqubo yokwethula i-vacuum, i-viscosity ye-resin ngokuvamile icishe ibe ngu-300cPs, futhi inqubo ye-RTM ingase ibe phezulu, kodwa Ngokuvamile, ngeke idlule ku-800cPs; Ngenqubo yokulungiselela, i-viscosity iyadingeka ibe phezulu, ngokuvamile cishe cishe ku-30000 ~ 50000cPs. Yiqiniso, lezi zidingo ze-viscosity zihlobene nezakhiwo zenqubo, imishini nezinto ngokwazo, futhi azishintshi. Ngokuvamile, njengoba izinga lokushisa likhuphuka, i-viscosity ye-resin iyancipha ebangeni lokushisa eliphansi; noma kunjalo, njengoba izinga lokushisa likhuphuka, ukusabela kokwelapha kwe-resin nakho kuyaqhubeka, ngokukhuluma nge-kinetically, izinga lokushisa. Izinga lokusabela liphindeka kabili kukho konke ukwanda okungu-10℃, futhi lokhu kulinganiselwa kusasebenza ekulinganiseni ukuthi i-viscosity yesistimu ye-reactive resin ikhuphuka nini iye endaweni ethile ebalulekile ye-viscosity. Isibonelo, kuthatha imizuzu engama-50 ohlelweni lwe-resin olune-viscosity engu-200cPs ku-100℃ ukwandisa i-viscosity yalo ibe yi-1000cPs, bese isikhathi esidingekayo ohlelweni olufanayo lwe-resin ukwandisa i-viscosity yalo yokuqala kusuka ngaphansi kuka-200cPs kuya ku-1000cPs ku-110℃ cishe imizuzu engama-25. Ukukhethwa kwamapharamitha enqubo kufanele kucabangele ngokugcwele i-viscosity nesikhathi se-gel. Isibonelo, enkambisweni yokwethula i-vacuum, kuyadingeka ukuqinisekisa ukuthi i-viscosity ekushiseni okusebenzayo ingaphakathi kobubanzi be-viscosity obudingekayo yinqubo, futhi impilo yebhodwe ye-resin kuleli zinga lokushisa kumele ibe yinde ngokwanele ukuqinisekisa ukuthi i-resin ingangeniswa. Ngamafuphi, ukukhethwa kohlobo lwe-resin enkambisweni yokujova kumele kucabangele iphuzu lejeli, isikhathi sokugcwalisa kanye nokushisa kwezinto. Ezinye izinqubo zinesimo esifanayo.
Enqubweni yokubumba, ubukhulu kanye nesimo sengxenye (isikhunta), uhlobo lokuqinisa, kanye namapharamitha enqubo kunquma izinga lokudlulisa ukushisa kanye nenqubo yokudlulisa isisindo senqubo. I-Resin yelapha ukushisa kwe-exothermic, okukhiqizwa ukwakheka kwezibopho zamakhemikhali. Uma izibopho zamakhemikhali eziningi zakhiwa ngevolumu yeyunithi ngayinye ngesikhathi seyunithi, kulapho kukhishwa amandla amaningi. Ama-coefficients okudlulisa ukushisa kwama-resin nama-polymer awo ngokuvamile aphansi kakhulu. Izinga lokususwa kokushisa ngesikhathi se-polymerization alikwazi ukulingana nezinga lokukhiqizwa kokushisa. Lawa manani okushisa akhuphukayo abangela ukusabela kwamakhemikhali ukuthi kuqhubeke ngesivinini esisheshayo, okuholela kokuningi Lokhu kusabela okuzisheshisa kuzogcina kuholele ekuhlulekeni kokucindezeleka noma ekuwohlokeni kwengxenye. Lokhu kugqame kakhulu ekwakhiweni kwezingxenye ezinkulu ezihlanganisiwe, futhi kubaluleke kakhulu ukwenza ngcono indlela yenqubo yokwelapha. Inkinga "yokushisa ngokweqile" kwendawo okubangelwa izinga eliphezulu le-exothermic lokwelapha kwangaphambili, kanye nomehluko wesimo (njengomehluko wokushisa) phakathi kwewindi lenqubo yomhlaba wonke kanye newindi lenqubo yendawo konke kungenxa yokuthi ungayilawula kanjani inqubo yokwelapha. “Ukufana kwezinga lokushisa” engxenyeni (ikakhulukazi ohlangothini lobukhulu bengxenye), ukuze kufezwe “ukufana kwezinga lokushisa” kuncike ekuhleleni (noma ekusetshenzisweni) kwezinye “ubuchwepheshe beyunithi” “ohlelweni lokukhiqiza”. Ezingxenyeni ezincane, njengoba inani elikhulu lokushisa lizohlakazeka endaweni ezungezile, izinga lokushisa likhuphuka kancane, futhi ngezinye izikhathi ingxenye ngeke iphole ngokuphelele. Ngalesi sikhathi, ukushisa okusizayo kudingeka kusetshenziswe ukuze kuqedwe ukusabela kokuxhumanisa, okungukuthi, ukushisa okuqhubekayo.
Ubuchwepheshe bokwakha izinto ezihlanganisiwe obungeyona i-autoclave buhlobene nobuchwepheshe bendabuko bokwakha i-autoclave. Ngokubanzi, noma iyiphi indlela yokwakha izinto ezihlanganisiwe engasebenzisi imishini ye-autoclave ingabizwa ngokuthi ubuchwepheshe bokwakha obungeyona i-autoclave. . Kuze kube manje, ukusetshenziswa kobuchwepheshe bokubumba obungeyona i-autoclave ensimini yezindiza kuhlanganisa kakhulu lezi ziqondiso ezilandelayo: ubuchwepheshe bokulungiselela i-non-autoclave, ubuchwepheshe bokubumba uketshezi, ubuchwepheshe bokubumba ukucindezela kwe-prepreg, ubuchwepheshe bokulungisa i-microwave, ubuchwepheshe bokulungisa i-electron beam, ubuchwepheshe bokwakha uketshezi olulinganiselayo. Phakathi kwalezi zobuchwepheshe, ubuchwepheshe bokulungiselela i-OoA (Outof Autoclave) buseduze nenqubo yendabuko yokwenza i-autoclave, futhi bunezinhlobo eziningi zezisekelo zenqubo yokubeka ngesandla kanye neyokuzenzakalelayo, ngakho-ke kubhekwa njengendwangu engalukiwe engase ibonakale ngezinga elikhulu. Ubuchwepheshe bokwakha i-Autoclave. Isizathu esibalulekile sokusebenzisa i-autoclave yezingxenye ezihlanganisiwe ezisebenzayo kakhulu ukunikeza ingcindezi eyanele ku-prepreg, enkulu kunengcindezi yomhwamuko yanoma iyiphi igesi ngesikhathi sokulungisa, ukuvimbela ukwakheka kwama-pores, futhi lokhu kuyi-OoA prepreg Ubunzima obuyinhloko ubuchwepheshe obudinga ukubudlula. Ukuthi i-porosity yengxenye ingalawulwa ngaphansi kwengcindezi ye-vacuum kanye nokusebenza kwayo kungafinyelela ukusebenza kwe-autoclave ekhandiwe i-laminate kuyisici esibalulekile sokuhlola ikhwalithi ye-OoA prepreg kanye nenqubo yayo yokubumba.
Ukuthuthukiswa kobuchwepheshe be-OoA prepreg kwaqala ngokuthuthukiswa kwe-resin. Kunamaphuzu amathathu ayinhloko ekuthuthukisweni kwama-resin e-OoA prepregs: elilodwa ukulawula ukugoba kwezingxenye ezibunjiwe, njengokusebenzisa ama-resin angeziwe acutshungulwe ukuze kuncishiswe ama-volatiles ekusabeleni kokwelapha; elesibili ukuthuthukisa ukusebenza kwama-resin acutshungulwe Ukuze kufezwe izakhiwo ze-resin ezakhiwe yinqubo ye-autoclave, kufaka phakathi izakhiwo zokushisa kanye nezakhiwo zemishini; elesithathu ukuqinisekisa ukuthi i-prepreg inokukhiqiza okuhle, njengokuqinisekisa ukuthi i-resin ingageleza ngaphansi kwe-gradient yokucindezela komoya, ukuqinisekisa ukuthi inokuphila isikhathi eside kwe-viscosity kanye nokushisa okwanele kwegumbi ngaphandle kwesikhathi, njll. Abakhiqizi bezinto ezingavuthiwe benza ucwaningo kanye nentuthuko yezinto ezibonakalayo ngokwezidingo ezithile zokuklama kanye nezindlela zenqubo. Iziqondiso eziyinhloko kufanele zifake: ukuthuthukisa izakhiwo zemishini, ukwandisa isikhathi sangaphandle, ukunciphisa izinga lokushisa lokwelapha, kanye nokuthuthukisa umswakama kanye nokumelana nokushisa. Ezinye zalezi zithuthukisi zokusebenza ziyangqubuzana. , njengokuqina okuphezulu kanye nokushisa okuphansi. Udinga ukuthola iphuzu lokulinganisela futhi ulicabangele ngokuphelele!
Ngaphezu kokuthuthukiswa kwe-resin, indlela yokukhiqiza ye-prepreg iphinde ikhuthaze ukuthuthukiswa kokusetshenziswa kwe-OoA prepreg. Ucwaningo luthole ukubaluleka kweziteshi ze-vacuum ze-prepreg zokwenza ama-laminate angenazo izimbobo. Izifundo ezalandela zibonise ukuthi ama-prepreg afakwe kancane angathuthukisa ngempumelelo ukungena kwegesi. Ama-prepreg e-OoA afakwe kancane nge-resin, kanti imicu eyomile isetshenziswa njengeziteshi zegesi yokukhipha umoya. Amagesi kanye ne-volatiles ezihilelekile ekuphekeni kwengxenye kungakhishwa ngeziteshi ukuze i-porosity yengxenye yokugcina ibe ngaphansi kwe-1%.
Inqubo yokufaka izikhwama ze-vacuum ingeyenqubo yokwenza i-non-autoclave (OoA). Ngamafuphi, inqubo yokubumba evala umkhiqizo phakathi kwesikhunta nesikhwama se-vacuum, futhi icindezele umkhiqizo ngokuwufaka i-vacuum ukuze wenze umkhiqizo ube mncane futhi ube nezakhiwo ezingcono zemishini. Inqubo eyinhloko yokukhiqiza yile
Okokuqala, i-ejenti yokukhulula noma indwangu yokukhulula isetshenziswa ku-layup mold (noma ishidi lengilazi). I-prepreg ihlolwa ngokwezinga le-prepreg esetshenzisiwe, okuhlanganisa kakhulu ubuningi bomphezulu, okuqukethwe kwe-resin, izinto eziguquguqukayo kanye nolunye ulwazi lwe-prepreg. Sika i-prepreg ibe usayizi. Lapho usika, naka isiqondiso semicu. Ngokuvamile, ukuphambuka kwesiqondiso semicu kuyadingeka kube ngaphansi kuka-1°. Bhala inombolo ngayinye yeyunithi yokuvala bese uqopha inombolo ye-prepreg. Lapho ubeka izendlalelo, izendlalelo kufanele zibekwe ngokuhambisana ngqo nohlelo lokubeka oludingekayo ephepheni lokurekhoda lokubeka, futhi ifilimu ye-PE noma iphepha lokukhulula kufanele lixhunywe eceleni kwemicu, futhi amabhamuza omoya kufanele axoshwe eceleni kwemicu. I-scraper isakaza i-prepreg bese iyiklwebha ngangokunokwenzeka ukuze isuse umoya phakathi kwezingqimba. Lapho ubeka, ngezinye izikhathi kuyadingeka ukuhlanganisa ama-prepreg, okumele ahlanganiswe eceleni kwesiqondiso semicu. Enqubweni yokuhlanganisa, kufanele kufezwe ukugqagqana nokugqagqana okuncane, futhi imithungo yokuhlanganisa yesendlalelo ngasinye kufanele ihlukaniswe. Ngokuvamile, igebe lokunamathisela le-prepreg eqondiswe eceleni lingokulandelayo. 1mm; i-prepreg elukiwe ivunyelwe kuphela ukugqagqana, hhayi ukugqagqana, kanti ububanzi bokugqagqana bungu-10 ~ 15mm. Okulandelayo, naka ukucindezelwa kwe-vacuum pre-compaction, futhi ubukhulu bokupompa kwangaphambi kwesikhathi buyahlukahluka ngokuya ngezidingo ezahlukene. Inhloso ukukhipha umoya ovaleleke ku-layup kanye ne-volatiles ku-prepreg ukuqinisekisa ikhwalithi yangaphakathi yengxenye. Bese kuba nokubekwa kwezinto ezisizayo kanye nokufakwa kwe-vacuum bagging. Ukuvalwa kwesikhwama nokulungiswa: Imfuneko yokugcina ukungakwazi ukuvuza umoya. Qaphela: Indawo lapho kuvame ukuvuza khona umoya yi-sealant joint.
Siphinde sikhiqizei-fiberglass eqondile ehambahambayo,omata be-fiberglass, i-fiberglass mesh, futhiukuzulazula okulukiwe kwe-fiberglass.
Xhumana nathi :
Inombolo yocingo:+8615823184699
Inombolo yocingo: +8602367853804
Email:marketing@frp-cqdj.com
Isikhathi sokuthunyelwe: Meyi-23-2022
