Date of Award
5-2022
Degree Type
Honors College Thesis
Academic Program
Polymer Science and Engineering BS
Department
Polymers and High Performance Materials
First Advisor
Jeffrey Wiggins, Ph.D.
Advisor Department
Polymers and High Performance Materials
Abstract
The development of high-power electromagnetic wave sources in the modern era has the ability to interfere with aircraft electronics and cause localized heating – necessitating advanced materials for electromagnetic interference (EMI) and thermal shielding. Multifunctional nanoparticles dispersed within polymer matrices can combat these issues; however, the best way to combine thermally and electrically conductive species to maximize electromagnetic interference shielding and thermal shielding is undetermined. Multifunctional layered epoxide/amine nanocomposites were prepared from tetra and octafunctional epoxide monomers (TGDDM and SU-8), 4,4-DDS tetrafunctional amine curative, and 1 wt.% hexagonal boron nitride nanoplatelets and/or 1 wt.% graphene nanoplatelets to form monolayer and bilayer films. Multilayer, vitrified nanocomposite laminates were prepared and characterized to quantify particle dispersion, layer orientation/integrity, rheological properties, and thermal properties via optical/scanning electron microscopy, FTMS rotational rheometry, thermogravimetric analysis, and laser flash diffusivity analysis. Monomer conversion throughout various cure profiles was quantified using ATR-FTIR spectroscopy. The data collected indicated that discrete layers were maintained throughout thermoset curing, with no hindrances in the rheological or thermal properties of the matrix. This suggests a new methodology for preparing layered, multifunctional EMI/thermal shielding materials with enhanced thermal conductivity.
Keywords: Electromagnetic interference shielding, Thermal shielding, Multifunctional nanoparticles, Epoxide/Amine
Copyright
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Recommended Citation
Necaise, Alyssa J., "Layered Epoxide-Amine/Boron Nitride/Graphene Nanocomposites for Enhanced Multifunctional Shielding" (2022). Honors Theses. 871.
https://aquila.usm.edu/honors_theses/871