Comprehensive Properties of 3D Printed High Permittivity Dielectrics Fabricated by Stereolithography Apparatus

Dielectrics with high permittivity have promising prospective in various electrical/electronic fields. UV curable resin/BaTiO3 inorganic fillers composites were prepared by stereolithography apparatus (SLA) 3D printing in our previous works. Herein, comprehensive properties of printed parts including electrical, mechanical, and thermal properties are systematically investigated. Experimental results show that the permittivity and dielectric loss increase with the increase of fillers' content. Meanwhile, the mechanical properties like impact strength deteriorate to some extent due to the addition of inorganic fillers. On the other hand, the pure resin and UV/filler composites share similar thermal degradation patterns. This work can provide fruitful guideline for the application of 3D printed high permittivity composites by SLA.