Development of Carbon-Nanotube based Nanoforest Derivatives for Manufacturing and Testing of Polymer Nanocomposite Prepregs, Film Stacking, and Powder Processing
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2024
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An existing Chemical Vapor Deposition (CVD) furnace was modified to include semi-automatic features to provide optimized CVD operation. The process of manufacturing and transferring Carbon Nanotube (CNT) based Nanoforest III (NFIII) for the specific use of high-temperature polymeric polyimide composite Prepregs such as Carbon/RM-1100 and Carbon/AFR-PE-4 prepreg systems has been established and employed in this research to manufacture high-performance composite materials. Several methods were optimized including: substrate preparation, CVD water injection times for best Nanoforest delamination, as well as the best methods and parameters for a hot press for transferring the CNT-based Nanoforest onto carbon fiber prepreg systems, mentioned above. To establish the quality and performance of the manufactured composite parts, ASTM Double Cantilevered Beam (DCB) samples, with and without Nanoforests, were manufactured and tested and found that, for example, the Mode I Opening Fracture Toughness improves between about 30% to 45% for the samples with CNT-based Nanoforests as compared with those without Nanoforest for various materials systems used in this research. Next, several composite panels were manufactured for various ASTM testing to specified dimensions and geometries with and without Nanoforest in between the layers. Finally, a Powder-Processing similar to a Film-Stacking composite manufacturing was established, where BMI (Bismaleimide – another high-temperature polymer) powder processing combined with dry Carbon Fabric, with and without CNT-based Nanoforest grown on the fabrics, was developed, followed by its DCB testing and results.
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Nanotechnology, Engineering, Materials Science
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138 pages
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