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| Title: | Dielectric powder/polymer composites for high energy density capacitors |
| Author (s): | Gilbert, Lynell J. Schuman, Thomas Dogan, Fatih |
| Department/Lab Affiliations: | Chemistry Coatings Institute Energy Research and Development Center Materials Research Center Materials Science & Engineering University Transportation Center Virtual Reality & Rapid Prototyping Lab |
| Keywords: | X-ray diffraction ball milling epoxy resin matrix epoxy/ barium titanate composite |
| Subject Terms: | Ceramic powders. Electron microscopy. |
| Issue Date: | 2005-08 |
| Publisher: | American Ceramic Society |
| Citation: | Gilbert, Lynell J., Schuman, Thomas P., and Dogan, Fatih E. "Dielectric Powder/Polymer Composites for High Energy Density Capacitors.", Proceedings of the 107th Annual Meeting of The American Ceramic Society, (Ceramic Transaction Series, Vol 179), 2005. |
| Abstract: | In this work, we present the synthesis, characterization, and electrical performance of an epoxy/ barium titanate composite. First, the BaTiO3 ceramic powder was examined by X-ray diffraction and scanning electron microscopy and was found to be tetragonal in its crystal structure with a particle size of approximately 1μm and crystals of 57.7nm. It was then established the particles of BaTiO3 could be well dispersed into an epoxy resin matrix using the common ceramic dispersant Menhaden fish oil, in 80/20 ratio by weight xylene to ethanol solvents, via ball milling. Films were synthesized in the geometry specified by ASTM D2149-97, and a dielectric constant of 13 and loss of 0.018 were achieved for composites with a volume filler concentration of 25%. The breakdown strength was 1243 kV/cm at a volume filler concentration of 7 % and decreased as the concentration of BaTiO3 was increased. Energy densities were calculated assuming a linearly behaved composite and were found to be 0.26-0.36 J/cm3 for specimens filled with 7 to 25 % barium titanate. |
| Type: | Article - Conference proceedings text |
| In Title: | Proceedings of the 107th Annual Meeting of The American Ceramic Society |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. No full text allowed FULL COPYRIGHT INFORMATION: |
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| title | Dielectric powder/polymer composites for high energy density capacitors |
| contributor.author | Gilbert, Lynell J. |
| contributor.author | Schuman, Thomas |
| contributor.author | Dogan, Fatih |
| contributor.deptlab | Chemistry |
| contributor.deptlab | Coatings Institute |
| contributor.deptlab | Energy Research and Development Center |
| contributor.deptlab | Materials Research Center |
| contributor.deptlab | Materials Science & Engineering |
| contributor.deptlab | University Transportation Center |
| contributor.deptlab | Virtual Reality & Rapid Prototyping Lab |
| subject | X-ray diffraction |
| subject | ball milling |
| subject | epoxy resin matrix |
| subject | epoxy/ barium titanate composite |
| subject.LCSH | Ceramic powders. |
| subject.LCSH | Electron microscopy. |
| date.issued | 2005-08 |
| publisher | American Ceramic Society |
| identifier.citation | Gilbert, Lynell J., Schuman, Thomas P., and Dogan, Fatih E. "Dielectric Powder/Polymer Composites for High Energy Density Capacitors.", Proceedings of the 107th Annual Meeting of The American Ceramic Society, (Ceramic Transaction Series, Vol 179), 2005. |
| identifier.pub.URI | |
| description.abstract | In this work, we present the synthesis, characterization, and electrical performance of an epoxy/ barium titanate composite. First, the BaTiO3 ceramic powder was examined by X-ray diffraction and scanning electron microscopy and was found to be tetragonal in its crystal structure with a particle size of approximately 1μm and crystals of 57.7nm. It was then established the particles of BaTiO3 could be well dispersed into an epoxy resin matrix using the common ceramic dispersant Menhaden fish oil, in 80/20 ratio by weight xylene to ethanol solvents, via ball milling. Films were synthesized in the geometry specified by ASTM D2149-97, and a dielectric constant of 13 and loss of 0.018 were achieved for composites with a volume filler concentration of 25%. The breakdown strength was 1243 kV/cm at a volume filler concentration of 7 % and decreased as the concentration of BaTiO3 was increased. Energy densities were calculated assuming a linearly behaved composite and were found to be 0.26-0.36 J/cm3 for specimens filled with 7 to 25 % barium titanate. |
| type | Article - Conference proceedings |
| type.DCMIType | text |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | No full text allowed |
| rights.URI | |
| relation.isPartOf | Proceedings of the 107th Annual Meeting of The American Ceramic Society |
| date.available | 2008-08-12T13:20:05Z |
| identifier.persist.URI |