Fabrication of Composite Filaments with High Dielectric Permittivity for Fused Deposition 3D Printing.

ABSTRACT: Additive manufacturing of complex structures with spatially varying electromagnetic properties can enable new applications in high-technology sectors such as communications and sensors. This work presents the fabrication method as well as microstructural and dielectric characterization of bespoke composite filaments for fused deposition modeling (FDM) 3D printing of microwave devices with a high relative dielectric permittivity ϵ = 11 in the GHz frequency range. The filament is composed of 32 vol % of ferroelectric barium titanate (BaTiO 3 ) micro-particles in a polymeric acrylonitrile butadiene styrene (ABS) matrix. An ionic organic ester surfactant was added during formulation to enhance the compatibility between the polymer and the BaTiO 3 . To promote reproducible and robust printabili

SUBMITTER: Wu Y 

PROVIDER: S-EPMC5667024 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature