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

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

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1119-1127
Number of pages9
JournalCarbon
Volume32
Issue number6
DOIs
Publication statusPublished - Jan 1 1994

Fingerprint

Carbon fibers
Fibers
Nozzles
Textures
Graphitization
Tensile properties
Tapes
Skin
Anisotropy
Microscopes
Tensile strength
Electron microscopes
Elastic moduli
Scanning
Mechanical properties
Temperature
carbon fiber

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Structure and properties of thin, slit-shaped carbon fibers prepared from mesophase pitch. / Fortin, Francois; Yoon, Seong-Ho; Korai, Yozo; Mochida, Isao.

In: Carbon, Vol. 32, No. 6, 01.01.1994, p. 1119-1127.

Research output: Contribution to journalArticle

Fortin, Francois ; Yoon, Seong-Ho ; Korai, Yozo ; Mochida, Isao. / Structure and properties of thin, slit-shaped carbon fibers prepared from mesophase pitch. In: Carbon. 1994 ; Vol. 32, No. 6. pp. 1119-1127.
@article{fce1d80f733b4f4f9c1b14501e9553e4,
title = "Structure and properties of thin, slit-shaped carbon fibers prepared from mesophase pitch",
abstract = "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.",
author = "Francois Fortin and Seong-Ho Yoon and Yozo Korai and Isao Mochida",
year = "1994",
month = "1",
day = "1",
doi = "10.1016/0008-6223(94)90220-8",
language = "English",
volume = "32",
pages = "1119--1127",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",
number = "6",

}

TY - JOUR

T1 - Structure and properties of thin, slit-shaped carbon fibers prepared from mesophase pitch

AU - Fortin, Francois

AU - Yoon, Seong-Ho

AU - Korai, Yozo

AU - Mochida, Isao

PY - 1994/1/1

Y1 - 1994/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0028713754&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028713754&partnerID=8YFLogxK

U2 - 10.1016/0008-6223(94)90220-8

DO - 10.1016/0008-6223(94)90220-8

M3 - Article

AN - SCOPUS:0028713754

VL - 32

SP - 1119

EP - 1127

JO - Carbon

JF - Carbon

SN - 0008-6223

IS - 6

ER -