02279nam a2200253Ia 4500003001000000005001700010040000900027245011900036490003300155520141900188650002301607650002801630650002401658650002501682700001501707700001701722700001901739700001801758700001701776700001801793700001701811856015601828008004101984MX-MdCICY20260521091706.0  cCICY10aAdditive manufacturing of nanotube-loaded thermosets via direct ink writing and radio-frequency heating and curing0 vCarbon, 200, p.307-316, 20223 aDirect Ink Writing (DIW)is an extrusion-based additive manufacturing method where the print medium is a liquid-phase 'ink' dispensed out of nozzles and deposited along digitally defined paths. Conventional DIW of thermosetting resins relies on viscosity modifying agents, novel crosslinking chemistries, and/or long curing schedules in an oven. Here we demonstrate the use of a co-planar radio frequency applicator to generate an electric field, which can be used to rapidly heat and cure nano-filled composite resins as they are printed. This method avoids the need for an oven or post-curing step. This process consists of a sequential print-and-cure cycle which allows for printing of high-resolution, multi-layered structures. Every extruded layer is partially cured using RF before depositing the next layer; this allows the printed part to maintain structural integrity. The process enables both increased throughput and decreased touch time relative to traditional manufacturing. Commercial epoxy resin with varied nano-filler loadings were examined as DIW candidates. After printing, the thermo-mechanical properties, surface finish, and shape retention of RF-cured samples were comparable to conventionally cured samples. This method of manufacturing establishes RF heating as a suitable alternative to conventional methods, facilitating rapid, free-form processing of thermosetting resins without a mold.14aDIRECT INK WRITING14aRADIO FREQUENCY HEATING14aTHERMOSETTING RESIN14aFREE-FORM PROCESSING12aSarmah, A.12aDesai, S. K.12aCrowley, A. G.12aZolton, G. C.12aTezel, G. B.12aHarkin, E. M.12aGreen, M. J.40uhttps://drive.google.com/file/d/1qgSejbwXX554xKlBPuwNLg-ZLxmdMszb/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx250602s9999    xx |||||s2   |||| ||und|d