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Effects of preoxidation and carbonization technologies on tensile strength of PAN‐based carbon fiber
Author(s) -
Jing Min,
Wang ChengGuo,
Zhu Bo,
Wang YanXiang,
Gao XuePing,
Chen WeiNing
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27669
Subject(s) - carbonization , ultimate tensile strength , materials science , composite material , fiber , tension (geology) , carbon fibers , composite number , scanning electron microscope
Dependence of the tensile strength of resulting carbon fiber (CF) on the preparation technologies during preoxidation and carbonization were studied systematically by a series of pilot experiments. The proper preoxidation time, preoxidation temperature, and preoxidation stretching ratio are the base of preparing high‐quality CF. During precarbonization, the enhancement of the precarbonization temperature and the application of the precarbonization stretching are helpful to increase the tensile strength of CF, but the stretching ratio should be controlled carefully by on‐line tension values. The tensile strength of CF increases quickly below 1200°C and then slowly above 1200°C as the carbonization temperature raises. Even though during carbonization, a proper relaxation should also be explored in order to prepare optimal CF. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008