3d akarukwa macomposites anogadzirwa nekuruka yakaoma preformed zvikamu uchishandisa machira tekinoroji.Iyo yakaoma preformed zvikamu zvinoshandiswa sekusimbisa, uye resin transfer molding process (RTM) kana resin membrane infiltration process (RFI) inoshandiswa kuisa pamuviri uye kurapa, ichigadzira zvakananga chimiro chemubatanidzwa.Sechinhu chepamusoro chinoumbwa zvinhu, chave chinhu chakakosha chiumbwa mumunda wendege uye ndege, uye yakashandiswa zvakanyanya muminda yemotokari, ngarava, kuvaka, zvinhu zvemitambo uye zviridzwa zvekurapa.Dzidziso yechinyakare yecomposite laminates haigone kusangana neiyo mechanical properties ongororo, saka nyanzvi dzekumba nekune dzimwe nyika dzakagadzira dzidziso itsva uye nzira dzekuongorora.
Matatu-dimensional akarukwa akaumbwa ndechimwe chezvinhu zvinotevedzwa zvakarukwa zvakaumbwa, izvo zvinosimbiswa nefiber yakarukwa jira (inozivikanwawo sematatu-dimensional preformed zvikamu) zvakarukwa nehunyanzvi hwakarukwa.Iyo ine yakakwira yakananga simba, yakananga modulus, yakakwirira kukuvara kushivirira, kutsemuka kuomarara, kukanganisa kupikisa, kupaza kuramba uye kuneta uye humwe hunhu hwakanaka.
Kuvandudzwa kweTATU-DIMENSIONAL akarukwa macomposites kunokonzerwa nekudzika kwe interlaminar shear simba uye kushomeka kwekushomeka kwezvakaumbwa zvinhu zvakagadzirwa kubva kune unidirectional kana bi-directional reinforcement zvinhu, izvo zvisingakwanisi kushandiswa sezvikuru zvinotakura zvinhu.LR Sanders yakaunza matatu-dimensional akarukwa tekinoroji muinjiniya application muna 977. Iyo inonzi 3D yakarukwa tekinoroji itatu-dimensional isina kusonwa-isina chimiro chakakwana chinowanikwa kuburikidza nekurongeka kwetambo refu uye pfupi mudenga maererano nemimwe mitemo uye kupindirana. pamwe chete, izvo zvinobvisa dambudziko re interlayer uye zvakanyanya kunatsiridza kukanganisa kupikisa kwezvinhu zvinosanganiswa.Inogona kuburitsa marudzi ese enguva dzose chimiro uye yakakosha-yakaumbwa muviri wakasimba, uye kuita kuti chimiro ive ne-multi-function, ndiko kuti, kuruka multilayer yakakosha nhengo.Parizvino, kune nzira dzinopfuura makumi maviri dzekuruka mumativi matatu, asi kune ina dzinowanzo shandiswa, dzinoti polar weaving.
kuruka), diagonal weaving (diagonalbraiding kana kurongedza
kuruka), kurukwa kweshinda orthogonal (orthogonal braiding), uye kurukwa kwewarp interlock.Kune mhando dzakawanda dze THREE-DIMENSIONAL braiding, dzakadai se-two-dimensional-dimensional braiding, nhanho ina nhatu-dimensional braiding uye multi-nhanho nhatu-dimensional kurukwa.
RTM maitiro maitiro
Yakakosha yekusimudzira kutungamira kweRTM maitiro ndiko kuumbwa kwakakosha kwezvikamu zvakakura.VARTM, LIGHT-RTM uye SCRIMP ndiwo maitiro ekumiririra.Tsvagiridzo uye mashandisiro eRTM matekiniki anosanganisira akawanda dzidziso uye matekinoroji, inova imwe yeanonyanya kushanda minda yekutsvagisa yecomposites munyika.Zvido zvake zvekutsvagisa zvinosanganisira: kugadzirira, chemikemikari kinetics uye rheological properties ye resin systems ine yakaderera viscosity uye yakakwirira kushanda;Kugadzirira uye permeability maitiro efiber preform;Computer simulation tekinoroji yekuumba maitiro;On-line yekutarisa tekinoroji yekugadzira maitiro;Mold optimization dhizaini tekinoroji;Kuvandudzwa kwechishandiso chitsva chine mumiririri akakosha In vivo;Mari yekuongorora matekiniki, nezvimwe.
Nekuita kwayo kwakanakisa kwekuita, RTM inoshandiswa zvakanyanya mungarava, zvivakwa zvemauto, nyika yekudzivirira engineering, zvekufambisa, aerospace uye indasitiri yevagari.Hunhu hwayo hukuru ndeiyi:
(1) Kuchinjika kwakasimba mukugadzira mold uye kusarudzwa kwezvinhu, zvinoenderana nezviyero zvakasiyana zvekugadzira,
Shanduko yemidziyo zvakare inochinjika zvakanyanya, kubuda kwezvigadzirwa pakati pe1000 ~ 20000 zvidimbu / gore.
(2) Inogona kugadzira zvikamu zvakaoma zvine hutano hwakanaka hwepamusoro uye yakakwirira dimensional kurongeka, uye ine zvimwe zviri pachena zvakanakira mukugadzirwa kwezvikamu zvakakura.
(3) Zviri nyore kuona kusimbiswa kwenzvimbo uye sandwich chimiro;Flexible kugadziriswa kwemakirasi ekusimbisa zvinhu
Rudzi uye chimiro chakagadzirirwa kusangana neakasiyana ekuita zvinodiwa kubva kune vehurumende kuenda kune aerospace maindasitiri.
(4) Fiber yemukati inosvika 60%.
(5) RTM molding process ndeye yakavharwa mold operation process, ine yakachena nharaunda yekushanda uye yakaderera styrene emission panguva yekuumbwa.
(6) RTM molding process ine zvakaomesesa zvinodiwa pane yakaomeswa zvinhu sisitimu, iyo inoda iyo yakasimbiswa zvinhu kuti ive nekupokana kwakanaka kune resin kuyerera scour uye kupinza.Zvinoda kuti resin ive yakaderera viscosity, yakakwirira reactivity, yepakati tembiricha kurapa, yakaderera exothermic peak kukosha kwekurapa, diki viscosity mukuita leaching process, uye inogona gel nekukurumidza mushure mejekiseni.
(7) Low pressure injection, general injection pressure <30psi(1PSI =68.95Pa), inogona kushandisa FRP mold (kusanganisira epoxy mold, FRP surface electroforming nickel mold, etc.), high degree yekusununguka kwekugadzira mold, mold cost yakaderera. .
(8) Iyo porosity yezvigadzirwa yakaderera.Kuenzaniswa ne prepreg molding process, RTM process haidi kugadzirira, kutakura, kuchengetedza uye kutonhora kwe prepreg, hapana yakaoma bhuku rekuisa uye vacuum bhegi kudzvanya maitiro, uye hapana kupisa kupisa nguva, saka kushanda kuri nyore.
Nekudaro, maitiro eRTM anogona kukanganisa zvakanyanya zvimiro zvechigadzirwa chekupedzisira nekuti resin uye fiber inogona kuumbwa kuburikidza nekumisikidza muchikamu chekuumba, uye iyo fiber inoyerera mugomba, iyo impregnation maitiro uye nzira yekurapa resin inogona kukanganisa zvakanyanya zvinhu zvechigadzirwa chekupedzisira, nokudaro zvichiwedzera kuoma uye kusadzora kwemaitiro.
Nguva yekutumira: Zvita-31-2021