Imidibaniso ephothiweyo ye-3d yenziwa ngokuluka iindawo ezomileyo ezenziwe kwangaphambili kusetyenziswa itekhnoloji yelaphu.Iindawo ezomileyo ezilungiselelwe ngaphambili zisetyenziselwa ukuqiniswa, kunye nenkqubo yokubumba i-resin transfer (RTM) okanye inkqubo ye-resin membrane infiltration process (RFI) isetyenziselwa ukukhulelwa kunye nokunyanga, ukwenza ngokuthe ngqo i-composite structure.Njengomathiriyeli odibeneyo ophambili, iye yaba yinto ebalulekileyo yolwakhiwo kwintsimi ye-aviation kunye ne-aerospace, kwaye isetyenziswe ngokubanzi kwimimandla yeemoto, iinqanawa, ukwakhiwa, iimpahla zemidlalo kunye nezixhobo zonyango.Ithiyori yemveli laminates composite ayikwazi ukuhlangabezana uhlalutyo iimpawu mechanical, ngoko abaphengululi ekhaya nakwamanye amazwe baye baseka ithiyori entsha kunye neendlela zokuhlalutya.
Umdibaniso ophothiweyo onamacala amathathu sesinye semathiriyeli elukiweyo elukiweyo efanisiweyo, ethi iqiniswe lilaphu elilukiweyo lefiber (ekwaziwa ngokuba ziinxalenye ezintathu ezine-dimensional preformed preformed) elukwe bubugcisa obuphothiweyo.Inamandla athile aphezulu, imodyuli ethile, ukunyamezela umonakalo omkhulu, ukuqina kwe-fracture, ukumelana nempembelelo, ukumelana nokuqhekeka kunye nokudinwa kunye nezinye iimpawu ezibalaseleyo.
Ukuphuhliswa kwe-THREE-DIMENSIONAL braided composites kungenxa ye-interlaminar ephantsi yamandla okucheba kunye nefuthe elibi lokumelana nokuxhatshazwa kwezinto ezidibeneyo ezenziwe nge-unidirectional okanye i-bi-directional reinforcement materials, ezingenakusetyenziswa njengeendawo eziphambili zokuthwala umthwalo.I-LR Sanders yazisa iteknoloji ephothiweyo enemigangatho emithathu kwisicelo sobunjineli kwi-977. Into ebizwa ngokuba yi-3D iteknoloji ephothiweyo yi-three-dimensional unstitch-free structure epheleleyo efumaneka ngokucwangciswa kwemicu emide kunye nemfutshane emkhathini ngokwemigaqo ethile kunye ne-interlacing. kunye nomnye, okuphelisa ingxaki ye-interlayer kwaye iphucula kakhulu ukuxhathisa umonakalo wezinto ezidibeneyo.Iyakwazi ukuvelisa zonke iintlobo zemilo eqhelekileyo kunye nomzimba oqinileyo omile okhethekileyo, kwaye wenze isakhiwo sibe nemisebenzi emininzi, oko kukuthi, ukuluka ilungu elidibeneyo le-multilayer.Sithetha nje, kukho iindlela ezingaphezu kwama-20 zokulukwa kwe-three-dimensional, kodwa kukho ezine ezisetyenziswa ngokuqhelekileyo, ezizezi, ukuluka ngencam.
ukuphotha), ukuluka kwediagonal (i-diagonalbraiding okanye ukupakisha
ukuphotha), ukuluka intambo ye-orthogonal (ukulukwa kwe-orthogonal), kunye nokulukwa kwe-warp interlock.Kukho iintlobo ezininzi zokulukwa kwe-THREE-DIMENSIONAL, njengokulukwa kwe-dimensional-dimensional-step-step, step-three-dimensional braiding kunye ne-multi-step three-dimensional braiding.
Iimpawu zenkqubo yeRTM
Isalathiso esibalulekileyo sophuhliso lwenkqubo ye-RTM kukubumba okudibeneyo kwamacandelo amakhulu.I-VARTM, LIGHT-RTM kunye ne-SCRIMP ziinkqubo zokumela.Uphando kunye nokusetyenziswa kobuchule be-RTM bubandakanya iinkalo ezininzi kunye nobuchwepheshe, enye yezona nkalo zophando ezisebenzayo ze-composites kwihlabathi.Umdla wakhe wophando ubandakanya: ukulungiswa, i-kinetics yeekhemikhali kunye neempawu ze-rheological zeenkqubo ze-resin kunye ne-viscosity ephantsi kunye nokusebenza okuphezulu;Ukulungiswa kunye neempawu zokungena kwi-fiber preform;Itekhnoloji yokulinganisa ikhompyuter yenkqubo yokubumba;Itekhnoloji yokubeka iliso kwi-intanethi yenkqubo yokwenza;Itekhnoloji yoyilo lokuphucula umngundo;Ukuphuhliswa kwesixhobo esitsha kunye ne-arhente ekhethekileyo kwi-vivo;Iindlela zokuhlalutya iindleko, njl.
Ngokusebenza kwayo okugqwesileyo kwenkqubo, i-RTM isetyenziswa ngokubanzi kwiinqanawa, amaziko omkhosi, ubunjineli bokhuselo lwelizwe, ezothutho, i-aerospace kunye neshishini loluntu.Iimpawu zayo eziphambili zezi zilandelayo:
(1) Ukuguquguquka okunamandla kwimveliso yokubumba kunye nokukhethwa kwezinto eziphathekayo, ngokwezikali ezahlukeneyo zemveliso,
Utshintsho lwezixhobo lubuye lube bhetyebhetye kakhulu, ukuveliswa kweemveliso phakathi kwe-1000 ~ 20000 iziqwenga / ngonyaka.
(2) Inokwenza iindawo ezintsonkothileyo ezinomgangatho olungileyo womphezulu kunye nokuchaneka komgangatho ophezulu, kwaye ineenzuzo ezicace ngakumbi ekwenzeni iinxalenye ezinkulu.
(3) Kulula ukuqonda ukuqiniswa kwendawo kunye nesakhiwo sesandwich;Uhlengahlengiso oluguquguqukayo lweeklasi zezinto zokuqinisa
Uhlobo kunye nolwakhiwo oluyilelwe ukuhlangabezana neemfuno ezahlukeneyo zokusebenza ukusuka kumashishini oluntu ukuya kwimizi-mveliso ye-aerospace.
(4) Umxholo weFiber ukuya kuthi ga kwi-60%.
(5) Inkqubo yokubumba i-RTM yeyomsebenzi ovaliweyo wokubumba, kunye nendawo yokusebenza ecocekileyo kunye nokukhutshwa kwe-styrene ephantsi ngexesha lokubumba.
(6) Inkqubo yokubumba i-RTM ineemfuno ezingqongqo kwinkqubo yezinto eziluhlaza, ezifuna ukuba izinto eziqiniweyo zibe nokuchasana okulungileyo kwi-resin flow scour kunye nokungena.Ifuna i-resin ukuba ibe ne-viscosity ephantsi, i-reactivity ephezulu, ukunyanga ubushushu obuphakathi, ixabiso eliphantsi lencopho ye-exothermic yokunyanga, i-viscosity encinci kwinkqubo yokuphuma, kwaye inokujongwa ngokukhawuleza emva kokutofa.
(7) I-injection yoxinzelelo oluphantsi, uxinzelelo lwe-injection jikelele <30psi (1PSI = 68.95Pa), inokusebenzisa i-FRP mold (kuquka i-epoxy mold, i-FRP surface electroforming nickel mold, njl.), iqondo eliphezulu lenkululeko yoyilo lokubumba, ixabiso lokubumba liphantsi. .
(8) I-porosity yeemveliso iphantsi.Xa kuthelekiswa nenkqubo yokubumba i-prepreg, inkqubo ye-RTM ayifuni ukulungiswa, ukuthuthwa, ukugcinwa kunye nokukhenkcezwa kwe-prepreg, akukho luhlu olunzima lwe-manual kunye ne-vacuum bag yokucinezela inkqubo, kwaye akukho xesha lonyango lokushisa, ngoko ke umsebenzi ulula.
Nangona kunjalo, inkqubo ye-RTM inokuchaphazela kakhulu iipropathi zemveliso yokugqibela kuba i-resin kunye nefayibha inokubunjwa ngokufakelwa kwinqanaba lokubumba, kunye nokuhamba kwefayibha emgodini, inkqubo yokukhulelwa kunye nenkqubo yokuphilisa i-resin inokuchaphazela kakhulu iimpawu zemveliso yokugqibela, ngaloo ndlela ukwandisa ubunzima kunye nokungalawuleki kwenkqubo.
Ixesha lokuposa: Dec-31-2021