A New Hybrid Manufacturing for 3D Printed Composites

K. Song, S. Jambhulkar, W. Xu
ASU Polytechnic,
United States

Keywords: 3D printing, polymer, nanoparticles, nanofibers, composites, sensors


3D printing methods have advantages over conventional manufacturing of manufacturing customization, design flexibility, and less dependence on supply chains. The major challenge for most 3D printing platforms is their trade-off between manufacturing speed and printing resolutions, e.g., when one of them is improving, the other will be at a sacrifice. Our method reported here aims at increasing the fineness of printing features, at the same time, without the decrease of manufacturing rates. We demonstrated the uses of a few nanoparticles, such as carbon nanofibers (one-dimensional nanofibers) and MXene (two-dimensional nanolayers), to show the nanoscale manipulation of nanoparticle orders. First, stereolithography exhibited the design of different surface patterning, upon which the particles deposited with a variety of methods. The surface patterning was then utilized as templates for organizing nanoparticle assembly. (i) The dip-coating formed bands with controlled regularity, a morphology significantly crucial in structural and functional material systems. (ii) The capillary force showed precise nanoparticle stacking management, a structural feature determining high sensitivity to strains or chemicals. Our hybrid manufacturing combining 3D printing and conventional coating techniques shed light on new methods for delicate architectures and multifunctional devices.