Title: Highly Conductive Dispersions of Carbon Nanotubes for Polymer Composite Applications

Authors: Santosh K. Yadav, Paul A. Rettinger

DOI: 10.33599/nasampe/c.23.0164

Abstract: This paper presents a comprehensive overview of carbonaceous nanomaterials utilized in composites, with a specific emphasis on their benefits, limitations, and electrical properties. The primary focus is on achieving static dissipative conductivity (ESD) and identifying the most efficient types of nanoparticles to attain this desired property. The process of debundling and dispersing nanoparticles is crucial, and two key elements for successful dispersion are the application of shear stress and the appropriate chemical environment. Shear stress plays a vital role in separating particles, while a suitable chemical environment stabilizes the nanoparticles and prevents re-agglomeration. To achieve dispersion, challenges posed by forces such as ionic attraction and dipole-dipole interactions, which can lead to re-agglomeration, must be addressed. Furthermore, the concentration threshold required to attain static dissipative conductivity is investigated. A remarkable finding highlighted in this study is the possibility of achieving electrically conductive characteristics in light-colored panels at significantly low nanoparticle concentrations, specifically below 100 parts per million (PPM). This study contributes valuable knowledge to the field, empowering researchers and engineers to make informed decisions when selecting carbonaceous nanomaterials for composite applications. Understanding the benefits, limitations, and electrical characteristics of these materials enables the development of high-performance composites with tailored electrical properties.

References: (1) Iijima, S. ""Direct observation of the tetrahedral bonding in graphitized carbon black by high-resolution electron microscopy."" Journal of Crystal Growth, 50(3), 675–683, 1980. (2) Iijima, S. ""Helical microtubules of graphite carbon."" Nature, 344, 56-58, 1991. (3) Yadav, Santosh; Cho, Jae W. “Functionalized Graphene Nanoplatelets for Enhanced Mechanical and Thermal Properties of Polyurethane Nanocomposites,” Applied Surface Science, 266, 360-367, 2012. (4) Mahapatra, Sibdas A; Yadav, Santosh; Yoo, Hye Jin Yoo; Jae Whan Cho. “Highly stretchable, transparent and scalable elastomers with tunable dielectric permittivity,” Journal of Material Chemistry, 21, 7686–7691, 2011. (5) Zdenko, Spitalsky; Tasis, Dimitrios; Papagelis, Konstantinos; Galiotis, Costas. “Carbon nanotube–polymer composites: chemistry, processing, mechanical and electrical properties, 35, 357-401, 2010. (6) Dresselhaus, Mildred S; Jorio, Ado; Hofmann, Mario; Dresslhaus, Gene; Saito, Riichiro. “Perspectives on Carbon Nanotubes and Graphene Raman Spectroscopy” Nano Letter, 10, 751–758, 2010. (7) Yadav, R., Tirumali, M., Wang, X., Naebe, M., Kandasubramanian, B. ""Defence Technology” 16, 107-118, 2020.

Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000164

Pages: 16

Price: $32.00