BPNX1021: Realizing Three-Dimensional Alignment of Two-Dimensional Material for Isotropic Properties Enhancement via Embedded Direct Ink Writing (New Project)


The orientation of fibrous fillers, induced by shear forces during extrusion, has been demonstrated to significantly enhance mechanical properties, electrical/thermal conductivity, microwave attenuation etc., albeit primarily in a two-dimensional (2D) x-y plane. In this study, we present a novel approach for achieving fiber alignment in a three-dimensional (3D) context, with an emphasis on the Z-direction, by utilizing embedded 3D printing techniques. This process involves the extrusion and suspension of composite inks within a viscoelastic gel medium, during which the alignment of the fiber can be controlled via velocity ratio, nozzle size, fiber dispersion etc. By selectively align the fiber in a 3D pattern, the mechanical properties, and conductivity can be largely improved and tuned.

Project is currently funded by: Federal

Publication date: 
February 16, 2024
Publication type: 
BSAC Project Materials (Current)
PREPUBLICATION DATA - ©University of California 2024

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