Yozo Korai
Chonnam National University
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Publication
Featured researches published by Yozo Korai.
Korean Journal of Chemical Engineering | 1999
Kap Seung Yang; Dong Joon Lee; Seung Kon Ryu; Yozo Korai; Yong Joong Kim; Isao Mochida
A precursor for a general purpose carbon fiber was prepared from coal tar pitch (CP) modified with 10 % p-benzoquinone (BQ) at 380 ‡C for 3 hours. Such a modification raised the softening of the pitch from 85 ‡C to 271 ‡C at a yield of 43 %. The modified pitch was spun smoothly at a rate of 480 m/min into a fiber of 20 Μm diameter. The fiber was stepwise stabilized at 236 ‡C (5 ‡C/min) and 312 ‡C (1 ‡C/min) for 3 hours at each temperature. Successively,carbonization and graphitization were performed at 1,000 ‡C and 2,400 ‡C, respectively, for one hour. Both the carbonized and graphitized fibers exhibited tensile strength of 570 MPa. The structural parameters of carbon and graphite fibers were their orientation values of 56.2 and 58.1 %, relatively low Lc(002) of 11.24 and 25 å, and large interlayer spacing (d002) of 3.86 and 3.49 å, respectively.
九州大学大学院総合理工学研究科報告 | 1999
Young-Chul Chang; Hun-Joon Sohn; Yonggang Wang; Yozo Korai; 要三 光来; Yoshiteru Nakagawa; 喜照 中川; Isao Mochida; 勲 持田; ヨウゾウ コライ; ヨシテル ナカガワ; イサオ モチダ
TitleMolecular Alignment and Domain Assembles in the Uni-chromicMesophase Spherules Prepared from Synthetic Naphthalene Isotropic PitchAuthor(s)Chang, Young-Chul; Sohn, Hun-Joon; Wang, Yong-Gang; Korai, Yozo;Nakagawa, Yoshiteru; Mochida, IsaoCitation九州大学大学院総合理工学研究科報告 ¦¦ 21(2) ¦¦ p161-165; Engineeringsciences reports, Kyushu University ¦¦ 21(2) ¦¦ p161-165Issue Date 1999-09URL http://hdl.handle.net/2324/16557Right
Archive | 1986
Isao Mochida; Yozo Korai
Archive | 1999
Kiyoshi Yokogawa; Seiji Fukuyama; Bai An; Masamichi Yoshimura; Isao Mochida; Yozo Korai; Minato Egashira
Archive | 1988
Isao Mochida; Yozo Korai; You Qing Fei; Takashi Oyama
Kobunshi | 1986
Isao Mochida; Yozo Korai
石炭科学会議発表論文集 | 2003
Faizul Ishom; Yozo Korai; Isao Mochida
石炭科学会議発表論文集 | 2003
Miftahul Huda; Yozo Korai; Isao Mochida
Archive | 2003
Ki-Hyouk Choi; Yosuke Kinoshita; Yozo Korai; Isao Mochida
炭素 | 1992
Isao Mochida; Ryuji Fujiura; Yozo Korai
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National Institute of Advanced Industrial Science and Technology
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