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Design and Modification of a Material Extrusion 3D Printer to Manufacture Functional Gradient PEEK Components.

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Summary
This summary is machine-generated.

Researchers developed a 3D printer for creating functional graded polyether ether ketone (PEEK) parts. Furnace cooling and annealing proved most effective for controlling microstructure and enhancing material properties.

Keywords:
PEEKadditive manufacturingfunctionally graded materialsfused deposition modellingmaterial extrusion printing

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Area of Science:

  • Materials Science
  • Additive Manufacturing
  • Polymer Science

Background:

  • Advancements in polymer science enable novel material properties and manufacturing techniques.
  • Additive manufacturing offers unique capabilities for creating complex geometries and customized parts.

Purpose of the Study:

  • To design and develop a material extrusion additive manufacturing device for producing functionally graded polyether ether ketone (PEEK).
  • To investigate strategies for controlling microstructure, specifically crystallinity, during PEEK 3D printing.

Main Methods:

  • Development of a custom material extrusion additive manufacturing device.
  • Implementation of five thermal control strategies to influence chamber temperature and PEEK crystallinity.
  • Scanning electron microscopy (SEM) to analyze bead interaction, porosity, and interlayer bonding.
  • Functional testing to assess crystallinity, adhesion, and mechanical behavior.

Main Results:

  • Identified furnace cooling and annealing as the most effective methods for achieving high PEEK crystallinity.
  • Quantified porosity levels and interlayer bonding strength, crucial for part quality.
  • Successfully printed a functionally graded cylindrical part with distinct low and high crystalline regions.

Conclusions:

  • The developed additive manufacturing device can produce functionally graded PEEK materials.
  • Thermal control during printing significantly impacts PEEK microstructure and mechanical properties.
  • Optimized cooling and annealing strategies are key to enhancing PEEK part performance in additive manufacturing.