Title: Towards Roll-to-Roll Manufacturing of Carbon Nanotube Based Multiscale Composites Using Electrophoretic Deposition
Authors: Dae Han Sung, Sagar M. Doshi, Andrew N. Rider, Erik T. Thostenson
Abstract: Multiscale hybrid composites, where traditional fiber reinforcements are hybridized nanoscale reinforcements, have been investigated for the development of functional intelligent materials. The internal, hierarchical, structure of the composites can be tailored during the processing stage. Electrophoretic deposition (EPD) is a processing technique that can directly integrate the nano-sized particles within fiber bundles. We have demonstrated that EPD has capability tailor the thickness and morphology of carbon nanotube films on a variety of conductive and non-conductive fabrics. This can be accomplished by controlling the processing parameters such as the strength of electric field, the concentration of dispersion and deposition time. One key advantage of EPD is the potential to scale-up the process for continuous production because it is performed at room temperature and does not use toxic chemicals. Along with active research and development of multifunctional composites and their commercialization, the needs for industrial-scale manufacturing of composite materials has been growing. This research focuses on the fundamental understanding of EPD process in order to design a continuous manufacturing system. The model system for this study is composed of an aqueous dispersion of carbon nanotubes functionalized with a cationic polymer, polyethyleneimine (PEI). A series of experiments are designed to investigate the influence of electrode geometry and configuration on deposition yield with the ultimate goal of establishing a highly efficient roll-to-roll manufacturing system.
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Conference: SAMPE NEXUS 2021
Publication Date: 2021/06/29
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