Additive manufacturing of shape memory thermoset composites with directional thermal conductivity
Author(s)
Type
Journal Article
Abstract
Shape memory epoxy vitrimers and their composites are candidate materials for multiple engineering applications due to the commercial availability of their precursors combined with their functionality, mechanical properties, and recyclability. However, the manufacturing of vitrimer composites through conventional mould-casting limits the flexibility in the design of complex parts. In this work feedstock inks are formulated based on reduced graphene oxide and hexagonal boron nitride (hBN) to 3D-print epoxy vitrimer-based composites by direct ink writing (DIW). The introduction of hBN platelets (up to 22 vol.%) and their alignment during printing enhances the fracture resistance of the material and induces directional thermal transport. The in-plane thermal conductivities (3 W m−1 K−1) are nearly one order of magnitude higher than the matrix material. The high conductivity results in faster actuation times and can be combined with the printing process to build structures designed to manage heat flow.
Date Issued
2024-02-26
Date Acceptance
2023-11-01
Citation
Advanced Functional Materials, 2024, 34 (9)
ISSN
1616-301X
Publisher
Wiley
Journal / Book Title
Advanced Functional Materials
Volume
34
Issue
9
Copyright Statement
© 2023 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
License URL
Identifier
http://dx.doi.org/10.1002/adfm.202311193
Publication Status
Published
Article Number
2311193
Date Publish Online
2023-11-27