Type of Document Thesis Author Wang, Sheng Author's Email Address firstname.lastname@example.org URN etd-07112005-164744 Title Characterization and Analysis of Electrical Conductivity Properties of Nanotube Composites Degree Master of Science Department Industrial and Manufacturing Engineering, Department of Advisory Committee
Advisor Name Title Zhiyong Liang Committee Chair Ben Wang Committee Member Chuck Zhang Committee Member James Simpson Committee Member Keywords
- Nanotube composites
Date of Defense 2005-07-08 Availability unrestricted AbstractCarbon nanotubes have attracted tremendous attention in both industrial and academic world due to their incomparable attributes in various areas since their first discovery. In recent years, as one of the most distinctive applications, conductive carbon nanotube composites have been investigated. Comparing with traditional materials, conductive nanocomposites have several advantages including extra-low threshold of particle content, no degradation of mechanical properties, ability to absorb magnetic interference, and tunable conductivity.
The main objectives of this thesis were to develop a comprehensive electrical resistivity measurement system which can cover resistivity range from 10E-6 to 10E18 §Ùcm and understand the relationship between their nanostructure and electrical resistivity. The resistivity of various nano-materials produced at FACCT including
random and aligned buckypaper (BP), direct mixing and casting samples, BP composites, and multi-scale composites were investigated and characterized. It was found that less than 1% tube loading can make resistivity of neat resin drops more than five orders. Electrical resistivity of MWNT/Epon862 composites decreases with the increase of tube loading. Also, good tube dispersion can help the formation of
electrical conductive network. Electrical resistivity of random BP composite is as low
as 3.92E-2 §Ùcm. The low resistivity of BP composites, BP/Carbon fiber(CF)/Epon862 composite and MWNT/CF/SC79 multi-scale composite make them very good candidates for EMI shielding materials.
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