Study on the Relationship Between Evolved Gases in Carbonization of Stabilized Polyacrylonitrile Fibers with 12,000 Filaments and Their Mechanical Properties

Title
Study on the Relationship Between Evolved Gases in Carbonization of Stabilized Polyacrylonitrile Fibers with 12,000 Filaments and Their Mechanical Properties
Authors
구본철이성호박세준오경애이승희방윤혁조한익
Keywords
Carbon fiber; carbonization; Mass Spectroscopy; mechanical properties; PAN
Issue Date
2017-09
Publisher
Science of Advanced Materials
Citation
VOL 9, NO 9-1571
Abstract
In this study, we proposed a carbonization mechanism of stabilized polyacrylonitrile (PAN) fibers with 12,000 strands (12 k) as a function of heating rates through the in-situ thermogravimetric analysis and mass spectroscopy during carbonization process. In order to simulate an actual manufacturing process of carbon fibers (CFs), stabilized fibers were carbonized at up to 1200 °C through heating rates of 20, 25, and 30 °C/min. We investigated the relationship between the rates and the structural and mechanical properties of the CFs analyzed by X-ray diffractometer and Raman spectroscopy. The high heating rate leads to higher decomposed temperature and carbonization yields of the stabilized fibers compared to the other rates. Therefore, it is believed that the structural and mechanical properties of the CFs could be improved by suitable removing uncyclized atoms under 500 °C and inducing intermolecular bonding between the stabilized PAN polymers above 1000 °C.
URI
http://pubs.kist.re.kr/handle/201004/66308
ISSN
1947-2935
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KIST Publication > Article
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