Carbon Additive Manufacturing with a Near-Replica “Green-to-Brown” Transformation
Nanocomposites containing nanoscale materials offer exciting opportunities to encode nanoscale features into macroscale dimensions, which produces unprecedented impact in material design and application. However, conventional methods cannot process nanocomposites with a high particle loading, as well as nanocomposites with the ability to be tailored at multiple scales. A composite architected mesoscale process strategy that brings particle loading nanoscale materials combined with multiscale features including nanoscale manipulation, mesoscale architecture, and macroscale formation to create spatially programmed nanocomposites with high particle loading and multiscale tailorability is reported. The process features a low-shrinking (<10%) “green-to-brown” transformation, making a near-geometric replica of the 3D design to produce a “brown” part with full nanomaterials to allow further matrix infill. This demonstration includes additively manufactured carbon nanocomposites containing carbon nanotubes (CNTs) and thermoset epoxy, leading to multiscale CNTs tailorability, performance improvement, and 3D complex geometry feasibility. The process can produce nanomaterial-assembled architectures with 3D geometry and multiscale features and can incorporate a wide range of matrix materials, such as polymers, metals, and ceramics, to fabricate nanocomposites for new device structures and applications.
This is the peer reviewed version of the following article: Zhang, C., Shi, B., He, J., Zhou, L., Park, S., Doshi, S., Shang, Y., Deng, K., Giordano, M., Qi, X., Cui, S., Liu, L., Ni, C. and Fu, K.K. (2023), Carbon Additive Manufacturing with a Near-Replica “Green-to-Brown” Transformation. Adv. Mater. 2208230. https://doi.org/10.1002/adma.202208230, which has been published in final form at https://doi.org/10.1002/adma.202208230. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. © 2023 Wiley-VCH GmbH. This article will be embargoed until 05/30/2024.
3D printing, low-shrinkage, multiscale features, nanomaterials, scalable 3D assembly
Zhang, C., Shi, B., He, J., Zhou, L., Park, S., Doshi, S., Shang, Y., Deng, K., Giordano, M., Qi, X., Cui, S., Liu, L., Ni, C. and Fu, K.K. (2023), Carbon Additive Manufacturing with a Near-Replica “Green-to-Brown” Transformation. Adv. Mater. 2208230. https://doi.org/10.1002/adma.202208230