C. C. Ibeh, Center For Nanocomposites & Multifunctional Materials [CNCMM], Pittsburg, KS; M. Bubacz, Mercer University, Macon, GA
The Center for Nanocomposites and Multifunctional Materials [CNCMM] is currently implementing the “Multifunctional Materials For Naval Structures” project at Pittsburg State University (PSU), a multi-institutional research thrust and partnership between PSU, North Carolina A&T University and University of New Orleans, that is sponsored by the Office of Naval Research (ONR). CNCMM’s research efforts focus on the design and development of energy absorbing and dissipating, hierarchical nanocomposite structures for blast resistant structures and ship hulls. Designs center around nanocomposites and foam-filled honeycomb cores with 3-D/2-D facesheet laminates, and design criteria include structural integrity, toughness and flammability resistance. Flame retardant vinyl ester resins are the choice polymeric matrices for cost-effectiveness; epoxy resins are used as benchmark for this study. Nanoparticles used for this study include nanoclay, silicon carbide and carbon nanofibers. Infusion of nanoparticles into polymer matrices is achieved via sonication. Nanocomposites and foam-impregnation of 3-D fabrics and honeycomb cores is carried out via compression molding and vacuum assisted hand lay-up (VAHLUP). Research efforts are carried out by student-faculty/staff teams that are sponsored by CNCMM as part of its workforce and economic development mission. In-lab produced nanocomposites are characterized for mechanical, nano-structural and flammability resistance properties using a Universal Testing Machine, XRD/AFM and Cone Calorimetry respectively. Developed nanocomposites exhibit synergies in specific mechanical and flammability resistance properties. Cone calorimetry data show reduced peak heat release rate (PHRR), effective heat of combustion (EHC) and smoke density.
Summary: In-lab produced nanocomposites are characterized for mechanical, nano-structural and flammability resistance properties using a Universal Testing Machine, XRD/AFM and Cone Calorimetry respectively. Developed nanocomposites exhibit synergies in specific mechanical and flammability resistance properties. Cone calorimetry data show reduced peak heat release rate (PHRR), effective heat of combustion (EHC) and smoke density.
