1991 Fiscal Year Final Research Report Summary
symtheses of new carbonaceous mesophase pitch using HF/BF_3
| Project/Area Number |
02453087
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
有機工業化学
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| Research Institution | Institute of Advanced Material Study, Kyushu University |
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Principal Investigator |
MOCHIDA Isao Kyushu Univ., Inst. Adv. Mat, Study, Prof., 機能物質科学研究所, 教授 (20037758)
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| Co-Investigator(Kenkyū-buntansha) |
KAWANO SHizuo Kyushu Univ., Inst. Adv. Mat. Study, Assis., 機能物質科学研究所, 助手 (10038581)
SAKANISHI Kinya Kyushu Univ., Inst. Adv. Mat. Study, Assis., 機能物質科学研究所, 助手 (60183365)
KORAI Yozo Kyushu Univ., Inst. Adv. Study, Assis., 機能物質科学研究所, 助手 (50122693)
FUJITSU Hiroshi Kyushu Univ., Inst. Mat. Study, Assis. Prof., 機能物質科学研究所, 助教授 (00038605)
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| Project Period (FY) |
1990 – 1991
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| Keywords | carbonaceous liquid crystal / HF / BF_3 / naphthalene / methylnaphthalene / pitch based carbon fiber / carbon materials / carbon-carbon composite / mesophase |
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| Research Abstract |
Preparation, structure, properties and a variety of application of mesophase pitches from aromatic hydrocarbons were examined to clarify their unique natures in the carbon science and technology. It was found HF/BF_3 catalyst oligomerizes a variety of aromatic hydrocarbons into oligomeras ranging dimers to decamers, which carries naphthenic hydrogens produced through aryl-reflecting their starting structure and polymerization conditions. For example, softening points of 100% anisotropic pitch range from 210 to 300ﾟC. The mesophase pitches showes excellent carbon yields of 80-90% under atmospheric pressure and over 90% under 3.1 MPa. High reactivity for oxidation in the air and thermal stability under inert atmosphere are additional advantage of the present pitch. Such properties allow a number of their applications for the carbon fiber, carbon tape, composites, high density carbon, porous carbon composite and carbon ceramic composite.
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