Stereolithography (SLA) - Qhov Kev Xaiv Zoo Tshaj Plaws rau Kev Luam Ntawv 3D Siab
Kev thaij duab Stereolithography (SLA lossis SL) yog ib lub tshuab luam ntawv 3D uas muaj kev ua haujlwm siab siv cov resin photosensitive ua cov khoom siv raw. Cov thev naus laus zis no siv cov khoom kho sai ntawm cov resin photosensitive nyob rau hauv qhov ntev tshwj xeeb UV laser irradiation, ua rau muaj kev ua tau zoo ntawm cov qauv 3D nyuaj los ntawm kev tsim cov txheej txheem.
Thaum lub sijhawm tsim khoom, cov kua nplaum uas rhiab heev yuav raug polymerization thiab khov tam sim ntawd thaum raug rau lub teeb UV (nthwv dej kwv yees li 250-400nm). Lub tshuab SLA tsom lub UV laser rau ntawm qhov chaw ntawm cov nplaum uas rhiab heev, maj mam kho cov nplaum los ntawm qhov taw tes mus rau kab thiab tom qab ntawd los ntawm kab mus rau saum npoo, ua tiav cov duab kos ntawm txhua txheej. Txheej los ntawm txheej, ib qho qauv 3D uas nruj thiab ntxaws ntxaws tau tsim.
Stereolithography muaj cov txiaj ntsig xws li kev ua pwm raug siab, cov nplaim du, thiab kev tsim cov ntsiab lus siab. Nws siv dav hauv kev ua qauv lag luam, tsim cov khoom siv kho mob, tsim cov hniav nyiaj hniav kub, tsim pwm, thiab cov qauv siab heev. Nws cov khoom tsim sai thiab meej ua rau lub voj voog tsim khoom luv dua, coj kev ywj pheej thiab kev tsim kho tshiab rau kev lag luam tsim khoom.
SLA (Stereolithography) tsis yog tsuas yog ib qho thev naus laus zis tseem ceeb hauv kev luam ntawv 3D xwb, tab sis kuj yog ib qho kev daws teeb meem zoo heev rau kev ua tiav cov qauv zoo thiab kev tsim khoom me me, pab cov tuam txhab ua tiav cov qauv siab dua hauv kev tsim khoom raug.
Cov Resins Photosensitive Radical Dawb:
Qhov Zoo: Tus nqi qis, kho sai, zoo toughness, viscosity tsawg
Qhov Tsis Zoo: Kev txwv tsis pub muaj oxygen ntau, kev ntsws me me, kev khoov ntawm cov khoom luam tawm, kev ua haujlwm tsis raug, thiab qhov xav tau kev kho thib ob.
Cov Cationic Photosensitive Resins:
Cov Zoo: Tsawg kawg nkaus qhov ntim shrinkage thaum kho, muaj kev cuam tshuam sai, tsis tas yuav kho zaum ob tom qab molding, tsis cuam tshuam los ntawm kev txwv tsis pub oxygen, ruaj khov zoo, cov khoom siv kho tshuab zoo heev, thiab raug siab
Qhov Tsis Zoo: Qhov qeeb qeeb ntawm cov tshuaj tiv thaiv, viscosity siab, vinyl ethers muaj cov tshuaj ntau thiab kho qeeb; epoxies yog brittle
Cov Txheej Txheem Sib Xyaws:
Cov txheej txheem sib xyaw ua ke ntawm Acrylate-epoxy muab ob txoj cai kho mob uas tau hais los saum toj no, nrog rau cov cationic thiab cov free radical initiators ua haujlwm ua ke.
Cov resins luam ntawv 3D raug muab faib ua cov resins dawb radical photosensitive, cationic photosensitive resins, thiab hybrid systems. Ever Ray, lub chaw tsim khoom nrog 20 xyoo ntawm kev paub tshwj xeeb hauv kev tsim khoom thiab kev txhim kho cov resins photocurable, muaj peev xwm tsim khoom txhua xyoo ntawm 20,000 tons, cov kab khoom tiav, thiab lub peev xwm los kho cov khoom. 3D printing resins suav nrog Polyurethane 7224-1, 7200, 7296-1, thiab 7253A-5.
