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Planar and Three-Dimensional Printing of Conductive Inks
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Reprocessable thermosets for sustainable three-dimensional printing.

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  • 1Digital Manufacturing and Design Center, Singapore University of Technology and Design, Singapore, 487372, Singapore.

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Researchers developed 3D printing reprocessable thermosets (3DPRTs) using a two-step polymerization. These advanced materials enable reshaping, repair, and recycling of 3D printed parts, addressing sustainability concerns.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Additive Manufacturing

Background:

  • Thermosetting photopolymers dominate the 3D printing market due to excellent properties.
  • Current thermosets are permanently crosslinked, hindering reprocessing, repair, and recycling.

Purpose of the Study:

  • To develop novel 3D printable thermosets with reprocessing capabilities.
  • To address the environmental impact of single-use 3D printed thermoset components.

Main Methods:

  • A two-step polymerization strategy was employed to synthesize the reprocessable thermosets.
  • The developed materials were tested for their ability to be reshaped, repaired, and recycled after initial 3D printing.

Main Results:

  • The novel 3D printing reprocessable thermosets (3DPRTs) were successfully synthesized.
  • Demonstrated ability to reform printed structures into new shapes.
  • Successfully repaired damaged parts and recycled material for reuse.

Conclusions:

  • The developed 3DPRTs offer a sustainable alternative to conventional thermosetting photopolymers.
  • This innovation provides a practical solution for reducing waste in additive manufacturing.
  • Enables a circular economy approach for 3D printing materials.