| Project/Area Number |
04044015
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Hokkaido University |
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Principal Investigator |
INAGAKI Michio Hokkaido Univ., Fac.of Eng., Professor, 工学部, 教授 (20023054)
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| Co-Investigator(Kenkyū-buntansha) |
CONARD Jack Center de Recherche sur la Matiere Divisee, Maitre de Recherch, CNRS, 主任研究員
DESARMOT Georges Office Nat.d'Etude et de Recherches Aerospatiale, Ingenieur, 主任研究員
ERRE Rene Univ.d'Orleans, Professor, 教授
OBERLIN Agnes Laboratoire Marcel Mathieu, Directeur Emerite, マシュー研究所, 名誉所長
BONNAMY Sylvie Center de Recherche sur la Matiere Divisee, Maitre de Recherch, CNRS, 主任研究員
ENDO Morinobu Shishu Univ., Fac.of Eng., Professor, 工学部, 教授 (10021015)
SAKAI Mototsugu Toyohashi Univ.of Tech., Dep.Mat.Sci., Professor, 工学部, 教授 (50124730)
YOSHIDA Akira Musashi, Inst.of Tech., Lecturer, 講師 (70257103)
HISHIYAMA Yoshihiro Musashi Inst.of Tech., Professor, 教授 (90061499)
TANABE Yasuhiro Tokyo Inst.of Tech., Res.Lab.of Eng.Mat., Associate Professor, 工業材料研究所, 助教授 (70163607)
YASUDA Ei-ichi Tokyo Inst.of Tech., Res.Lab.of Eng.Mat., Professor, 工業材料研究所, 教授 (70016830)
G Desarmot 宇宙研究所, 主任研究員
J Conard 微粒子研究所, 主任研究員
R Erre オルレアン大学, 教授
A Oberlin マルセル, マシュー研究所, 所長
S Bonnamy 微粒子研究所, 主任研究員
ANTHONY Buns Ecoles des Mines, Professor
GEORGE Desar Office National d′Et1des et de Recherche, Maitre de
RENE Erre Centre de Recherche sur la Matiere Divis, Maitre de
AGNES Oberli Laboratoire Marcel Mathieu, Directeur
SYLVIE Bonna Centre de Recherche sur la Matiere Divis, Maitre de
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| Project Period (FY) |
1992 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1994: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1993: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1992: ¥2,600,000 (Direct Cost: ¥2,600,000)
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| Keywords | Carbon skeletons / Pitches / Mesophase / Polyimides / Carbon fibers / Carbon films / Graphite films / 異方性 / 骨格構造 / 組織 / インターカレーション |
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| Research Abstract |
The formation and growth of carbon skeletons, i.e., mesophase, in pitches which are in liquid state are understood in comparison with polyimides which are carbonized in solid state and vapor-grown carbon fibers which are grown in gas-phase carbonization. The structure and texture of carbons, which are resulted from the development of carbon skeletons, and their importance in carbon science and technology are discussed in the cases of films and fibers.
1.Development of carbon skeletons
The development of carbon skeletons depended strongly on chemical constitution and thermal history of pitches. Some pitches were heterogeneous at a micrometric scale, isotropic phase containing Brooks-Taylor type mesophase spheres and anisotropic domains consisting of basic structural units associated edge-to-edge with a long range statistical orientation. Some pitches were homogneous, consisting of anisotropic domains with a long range statistical orientation.
2.Structure development in carbon materials
The
… More
heterogeneous and homogeneous textures in pitches were found to be remained even after the spinning to fibers. From the pitch containing large amount of edge-to-edge anisotropic regions, for example, the fibers with radial texture in their cross-section were spinned, and their texture was found to be kept during oxidation, carbonization and subsequent graphitization. In the carbon films prepared from polyimides, the development of graphite structure was found to be strongly governed by the molecular orientation in the precursor polyimide films. The same situation was observed on vapor-grown carbon fibers.
3.Textures in carbon materials and their functions
The effects of texture in carbon materials on their functions were studied by focusing on the development of graphitic structure with high temperature heat treatment, the interaction with polymer matrices and intercalation of sulfuric acid and lithium ions by using carbon fibers with different textures. The mechanical properties of carbon fiber/carbon matrix composites were also studied. Less
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