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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Electrical Engineering

Background:

  • Polymer dielectrics face limitations in meeting modern electronic demands.
  • Polyelectrolyte complexes (PECs) show potential but are restricted to thin films due to processing challenges.
  • Additive manufacturing offers a path to overcome PEC processing limitations.

Purpose of the Study:

  • To investigate polyelectrolyte resin formulations for additively manufactured dielectric insulators.
  • To explore the dielectric properties of PECs produced via vat photopolymerization.
  • To demonstrate the creation of bulk dielectrics with tailored properties and arbitrary geometries.

Main Methods:

  • Formulation of multiple polyelectrolyte resins using polyethylenimine, methacrylic acid, and varying amounts of 2-hydroxyethyl methacrylate and/or N,N-dimethylacrylamide.
  • Utilizing vat photopolymerization for additive manufacturing of polyelectrolyte complexes.
  • Characterization of dielectric breakdown strength and dielectric behavior.

Main Results:

  • Successful additive manufacturing of polyelectrolyte complex dielectrics with arbitrary shapes.
  • Achieved high dielectric breakdown strengths exceeding 300 kV/mm.
  • Demonstrated tunability of dielectric behavior through resin formulation and post-processing.

Conclusions:

  • Vat photopolymerization enables the production of bulk PEC dielectrics with complex geometries.
  • Novel PEC chemistry provides a versatile route for creating tailored dielectric materials.
  • These advancements offer a practical solution for advanced dielectric insulators in electronic applications.