Type of Document Thesis Author Ugarte, Johnnattan Tennessee Author's Email Address email@example.com URN etd-07092007-100740 Title Development of Continuous Manufacturing Process for Magnetically Aligned and Random Nanotube Buckypapers Degree Master of Science Department Industrial and Manufacturing Engineering, Department of Advisory Committee
Advisor Name Title Richard Liang Committee Chair Ben Wang Committee Member Chuck Zhang Committee Member James Brooks Committee Member Young-Bin Park Committee Member Keywords
- Single Wall Nanotubes
- Continuous Manufacturing
Date of Defense 2007-06-25 Availability unrestricted AbstractABSTRACT
Fiber-reinforced composites are becoming more popular due to their high strength to weight ratio, making them a suitable replacement for traditional metals for lightweight applications. However, for applications where electro-conductivity and thermo-conductivity are required, fiber-reinforced composites lack the necessary properties without adding parasitic components. As a result of extensive research, high performance carbon nanotube-reinforced composites are considered as one of the key solutions to this issue, with buckypapers serving as the central constituent.
Buckypapers are thin membranes of well-dispersed networks of nanotubes held together by van der Waals forces. Buckypapers are considered as one of the promising candidates for incorporating nanotubes into composite manufacturing due to their ease of handling and the ability to transfer the properties of the nanotubes into the resultant composites. Buckypapers enable thermal and electro-conductivity in ranges not possible using fiber composites alone.
The objective of this research is to develop an effective, affordable manufacturing process capable of continuously fabricating buckypaper materials to meet market demands, as well as property and quality requirements from the consumers. The batch method of buckypaper manufacturing processes have been investigated and standardized by previous studies. Successful results under the standardized process have been adopted to pilot buckypaper production. Such studies have also attracted the interest of industrial consumers who require large-scale manufacturing, and continuity of buckypaper materials, which are not offered by the current batch method.
Through the development of four generations of prototypes, this research has successfully designed and fabricated the Nano Material Continual Integration System (NM-CIS), a filtration system capable of producing high quality continuous buckypaper materials. A prototype to produce continuous 1.5in wide buckypapers of randomly-dispersed SWNTs has been successfully developed. Furthermore, the research has characterized the physical and electrical properties and compared them with current batch-production buckypapers. The results indicate that the continuous manufacturing processes have the potential to scale-up production of continuous buckypaper products to achieve desired quality, continuity and affordability for potential industrial applications. Furthermore, the research has designed and fabricated the MA-CIS system to fabricate continuous magnetically aligned buckypaper materials, and the W-CIS system to produce 11-in wide-buckypaper
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