Nekudzidza mhedzisiro yemipimo yakasiyana yehydroxypropyl methylcellulose (HPMC) pakudhindwa, hunhu hwerheological uye hunhu hwemakanika hwe3D printing mortar, chiyero chakakodzera cheHPMC chakakurukurwa, uye mashandiro ayo esimba akaongororwa pamwe chete ne microscopic morphology. Mhedzisiro yacho inoratidza kuti kuyerera kwemortar kunoderera nekuwedzera kwehuwandu hweHPMC, ndiko kuti, kuyerera kunoderera nekuwedzera kwehuwandu hweHPMC, asi kugona kuchengetedza kuyerera kunovandudza. Kuwedzerwa; chiyero chekuchengetedza chimiro uye kuramba kupinda pasi pekuzviremera kunowedzera zvakanyanya nekuwedzera kwehuwandu hweHPMC, ndiko kuti, nekuwedzera kwehuwandu hweHPMC, kugadzikana kunovandudza uye nguva yekudhinda inowedzerwa; kubva pakuona kwerheology, ne Nekuwedzera kwehuwandu hweHPMC, viscosity inoonekwa, kushushikana kweiyo uye viscosity yepurasitiki yeslurry yakawedzera zvakanyanya, uye kugadzikana kunovandudza; thixotropy yakatanga yakawedzera uye yozodzikira nekuwedzera kwehuwandu hweHPMC, uye kudhindwa kunovandudza; Zviri mukati meHPMC zvawedzera. Zvakanyanya kukwira zvichaita kuti porosity yemortar iwedzere uye simba rayo riwedzere. Zvinokurudzirwa kuti zviri mukati meHPMC hazvifanirwe kudarika 0.20%.
Mumakore achangopfuura, tekinoroji yekudhinda ye3D (inozivikanwawo se "kuwedzera kugadzirwa") yakakurumidza kukura uye yakashandiswa zvakanyanya muminda yakawanda senge bioengineering, aerospace, uye kugadzira hunyanzvi. Maitiro ekudhinda e3D asina mold akavandudza zvakanyanya zvinhu uye Kuchinjika kwedhizaini yezvivakwa uye nzira yayo yekuvaka otomatiki haingochengetedze chete vashandi, asiwo yakakodzera mapurojekiti ekuvaka munzvimbo dzakasiyana-siyana dzakaoma. Kusanganiswa kwetekinoroji yekudhinda ye3D nenzvimbo yekuvaka kune hunyanzvi uye kunovimbisa. Parizvino, zvinhu zvakagadzirwa nesimende 3D Maitiro anomiririra ekudhinda inzira yekuwedzera (kusanganisira contour process contour crafting) uye maitiro ekudhinda kongiri uye powder bonding (D-shape process). Pakati pavo, maitiro ekuwedzera stacking ane zvakanakira musiyano mudiki kubva kune tsika yekuumba kongiri, kugona kukuru kwezvikamu zvikuru uye mari yekuvaka. Kubatsira kwakaderera kwave nzvimbo dziripo dzeKutsvagisa tekinoroji yekudhinda ye3D yezvinhu zvakagadzirwa nesimende.
Pazvinhu zvakagadzirwa nesimende zvinoshandiswa se "zvinhu zveinki" zvekudhinda kwe3D, zvinodiwa pakushanda kwazvo zvakasiyana nezvezvinhu zvakagadzirwa nesimende: kune rumwe rutivi, kune zvimwe zvinodiwa kuti zvinhu zvitsva zvakasanganiswa nesimende zvishande zvakanaka, uye maitiro ekuvaka anofanira kusangana nezvinodiwa zvekubvisa zvinhu zvakapfava. Kune rumwe rutivi, zvinhu zvakagadzirwa nesimende zvinofanira kunge zvakasungirirwa, kureva kuti, hazvizoputsike kana kukanganisika zvakanyanya pasi pesimba razvo uye kumanikidzwa kwechikamu chepamusoro. Pamusoro pezvo, maitiro ekudhinda e3D anoita kuti zvikamu zvive pakati pezvikamu. Kuti ive nechokwadi chekuti nzvimbo yekubatanidza nzvimbo yekubatanidza zvikamu zvakanaka, zvinhu zvekuvaka zve3D zvinofanirwawo kunge zvakanamatira zvakanaka. Muchidimbu, dhizaini yekuburitsa, kugadzikana, uye kunamatira kwakanyanya zvakagadzirwa panguva imwe chete. Zvinhu zvakagadzirwa nesimende ndechimwe chezvinhu zvinodiwa pakushandisa tekinoroji yekudhinda ye3D mumunda wekuvaka. Kugadzirisa maitiro emvura uye hunhu hwe rheological hwezvinhu zvesimende inzira mbiri dzakakosha dzekuvandudza mashandiro ekudhinda ari pamusoro apa. Kugadziriswa kwemaitiro ekunyorovesa mvura yezvinhu zvinosimbisa simende Zvakaoma kuita, uye zviri nyore kukonzera matambudziko akadai sekuvharika kwemapombi; uye kutonga kwehunhu hwerheological kunofanirwa kuchengetedza kuyerera kwemvura panguva yekudhinda uye kumhanya kwekugadzira mushure mekuumbwa kweextrusion. Mukutsvaga kuri kuitwa, zvinogadzirisa viscosity, mineral admixtures, nanoclays, nezvimwewo zvinowanzo shandiswa kugadzirisa hunhu hwerheological hwezvinhu zvakagadzirwa nesimende kuti zvive nekushanda kwakanaka kwekudhinda.
Hydroxypropyl methylcellulose (HPMC) chinhu chinowanzo shandiswa nepolymer. Zvisungo zvehydroxyl ne ether pa molecular chain zvinogona kusanganiswa nemvura yakasununguka kuburikidza nezvisungo zvehydrogen. Kuzviisa mu concrete kunogona kuvandudza kubatana kwayo. uye kuchengetedza mvura. Parizvino, tsvakiridzo pamusoro pemhedzisiro yeHPMC pahunhu hwezvinhu zvakagadzirwa nesimende inonyanya kutarisa pamhedzisiro yayo pakuyerera kwemvura, kuchengetedza mvura, uye rheology, uye tsvakiridzo shoma yakaitwa pahunhu hwezvinhu zvakagadzirwa nesimende zvakagadzirwa ne3D printing (zvakadai sekugona kuburitsa, kugona kugadzika, nezvimwewo). Pamusoro pezvo, nekuda kwekushaikwa kwemitemo yakafanana yekudhinda kwe3D, nzira yekuongorora yekugona kudhindwa kwezvinhu zvakagadzirwa nesimende haisati yawanikwa. Kugona kugadzika kwezvinhu izvi kunoongororwa nehuwandu hwezvikamu zvinodhindwa zvine deformation yakakura kana kukwirira kwakanyanya kwekudhinda. Nzira dzekuongorora dziri pamusoro apa dzinoenderana nepfungwa yepamusoro, kusashanda zvakanaka, uye maitiro akaoma. Nzira yekuongorora mashandiro ine mukana mukuru uye kukosha mukushandiswa kweinjiniya.
Mupepa rino, zviyero zvakasiyana zveHPMC zvakaiswa muzvinhu zvakagadzirwa nesimende kuti zvivandudze kugona kudhindwa kwesimbi, uye mhedzisiro yemuyero weHPMC pazvigadzirwa zvesimbi zve3D printing yakaongororwa zvizere nekudzidza kugona kudhindwa, maitiro erheological uye maitiro emakanika. Zvichibva pamigumisiro yekuongorora, simbi yakasanganiswa nehuwandu hwakakodzera hweHPMC yakasarudzwa kuti iongororwe kudhinda, uye zviyero zvakakodzera zvechinhu chakadhindwa zvakaedzwa; zvichibva pakudzidza kwechimiro chidiki chemuenzaniso, mashandiro emukati mekushanduka kwekushanda kwezvinhu zvekudhinda akaongororwa. Panguva imwe chete, zvinhu zvakagadzirwa nesimende zve3D printing zvakatangwa. Nzira yakazara yekuongorora mashandiro ekudhinda kuitira kukurudzira kushandiswa kwetekinoroji yekudhinda ye3D mumunda wekuvaka.
Nguva yekutumira: Gunyana-27-2022