Resin da za a iya faɗaɗawa ta hanyar bugawa ta 3D

Mataki na farko na binciken ya mayar da hankali kan zaɓar monomer wanda zai yi aiki a matsayin tubalin ginin resin polymer. Dole ne monomer ɗin ya kasance mai warkewa ta UV, yana da ɗan gajeren lokacin warkarwa, kuma yana nuna kyawawan halaye na injiniya waɗanda suka dace da aikace-aikacen damuwa mai girma. Bayan gwada mutane uku da za su iya shiga, ƙungiyar ta yanke shawarar amfani da 2-hydroxyethyl methacrylate (za mu kira shi HEMA).

Da zarar an kulle monomer ɗin, masu binciken sun fara nemo mafi kyawun yawan hasken photoinitiator tare da wani abu mai busawa da ya dace don haɗa HEMA da shi. An gwada nau'ikan hasken photoinitiator guda biyu don shirye-shiryensu na warkarwa a ƙarƙashin hasken UV na 405nm na yau da kullun waɗanda galibi ake samu a yawancin tsarin SLA. An haɗa hasken photoinitiators a cikin rabo na 1: 1 kuma an haɗa su da kashi 5% ta nauyi don samun sakamako mafi kyau. Maganin busawa - wanda za a yi amfani da shi don sauƙaƙe faɗaɗa tsarin ƙwayoyin halitta na HEMA, wanda ya haifar da 'kumfa' - ya ɗan yi wahala a samu. Yawancin magungunan da aka gwada ba su narkewa ko kuma suna da wahalar daidaitawa, amma ƙungiyar a ƙarshe ta yanke shawara kan wani abu mai busawa wanda ba na gargajiya ba wanda galibi ana amfani da shi tare da polymers masu kama da polystyrene.

An yi amfani da cakuda sinadaran masu rikitarwa don ƙirƙirar resin photopolymer na ƙarshe kuma ƙungiyar ta sami damar yin aiki akan buga 3D wasu ƙira na CAD marasa rikitarwa. An buga samfuran 3D akan Anycubic Photon a sikelin 1x kuma an dumama su a 200°C na tsawon mintuna 10. Zafin ya lalata sinadarin busawa, yana kunna aikin kumfa na resin kuma yana faɗaɗa girman samfuran. Bayan kwatanta girman kafin da bayan faɗaɗawa, masu binciken sun ƙididdige faɗaɗa girma har zuwa 4000% (40x), suna tura samfuran da aka buga na 3D fiye da iyakokin girman farantin ginin Photon. Masu binciken sun yi imanin cewa za a iya amfani da wannan fasaha don aikace-aikace masu sauƙi kamar aerofoils ko kayan taimako na buoyancy saboda ƙarancin yawan kayan da aka faɗaɗa.