Thermal Conductivity of Polyimide/Carbon Nanofiller Blends
| Autor: | Subrata Ghose, K.A. Watson, D.M. Delozier, D.C. Working, John W. Connell, J.G. Smith, Y.P. Sun, Y. Lin |
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| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Materials science Nanocomposite Carbon nanofiber Mechanical Engineering chemistry.chemical_element Compression molding Carbon nanotube law.invention Thermal conductivity chemistry Mechanics of Materials law General Materials Science Compounds of carbon Graphite Composite material Carbon |
| Zdroj: | Key Engineering Materials. :749-752 |
| ISSN: | 1662-9795 |
| Popis: | In efforts to improve the thermal conductivity (TC) of Ultem(TM) 1000, it was compounded with three carbon based nano-fillers. Multiwalled carbon nanotubes (MWCNT), vapor grown carbon nanofibers (CNF) and expanded graphite (EG) were investigated. Ribbons were extruded to form samples in which the nano-fillers were aligned. Samples were also fabricated by compression molding in which the nano-fillers were randomly oriented. The thermal properties were evaluated by DSC and TGA, and the mechanical properties of the aligned samples were determined by tensile testing. The degree of dispersion and alignment of the nanoparticles were investigated with high-resolution scanning electron microscopy. The thermal conductivity of the samples was measured in both the direction of alignment as well as perpendicular to that direction using the Nanoflash technique. The results of this study will be presented. |
| Databáze: | OpenAIRE |
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