Structure and properties of thin, slit-shaped carbon fibers prepared from mesophase pitch

Francois Fortin, Seong Ho Yoon, Yozo Korai, Isao Mochida

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

抜粋

A mesophase pitch of 100% anisotropy prepared from methylnaphthalene using HF/BF3 was spun through the slit-shaped nozzle in a temperature range of 260-275°C. Very thin fibers were obtained, about 2-5 μm in thickness and 10-18 μm in width, according to spinning temperature. The slit-shaped transversal section of tape was observed under optical microscope, scanning and transmission electron microscopes. The symmetric Double Layer is proposed as a model of the cross-sectional texture, which carried radial orientation at the semicircular edges, onion-skin at the flat edges, alignments perpendicular to the flat edges in the intermediate parts and alignments parallel to the major axis at the central part of the ellipse fiber. Present carbon fibers exhibited better mechanical properties, as compared to those of round fibers spun through conventional circular nozzles. The fibers after graphitization at 2500°C showed excellent tensile strength and modulus as high as 340-395 Kg/mm2 and 84-92 ton/mm2, respectively. The particular shape and texture of transversal section appears principally responsible for such tensile properties.

元の言語英語
ページ(範囲)1119-1127
ページ数9
ジャーナルCarbon
32
発行部数6
DOI
出版物ステータス出版済み - 1994

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

フィンガープリント Structure and properties of thin, slit-shaped carbon fibers prepared from mesophase pitch' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用