The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers
碩士 === 逢甲大學 === 材料科學所 === 91 === In this article, a continuous stabilization process is used to make stabilized fibers from polyacrylonitrile(PAN) fiber in different drawing ratio and then carbonized to produce carbon fibers. The experimental results showed that the diameter is decreased with the in...
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ndltd-TW-091FCU051590272018-06-25T06:06:38Z http://ndltd.ncl.edu.tw/handle/75cwg9 The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers 穩定化過程中牽伸比對所製得碳纖維物性及結構之影響 Yen-Ju Su 蘇彥儒 碩士 逢甲大學 材料科學所 91 In this article, a continuous stabilization process is used to make stabilized fibers from polyacrylonitrile(PAN) fiber in different drawing ratio and then carbonized to produce carbon fibers. The experimental results showed that the diameter is decreased with the increase of the heat-treatment temperature and the drawing ratio during the stabilization and the carbonization process, the diameter was 7.39μm in 1300℃ and 1.05 of the drawing ratio. The density of stabilized and carbon fibers is increased with the increase of the drawing ratio and the heat-treat temperature. In the result of the element analysis, the oxygent content and the ratio of [O]/[C] is increased with the increase of the drawing ratio in the stabilization process. During the carbonization process, the content of the carbon in the carbon fibers, the content of carbon is over 94% when the temperature arise over 1200℃, is affect by the drawing ratio and heat-treatment temperature. The carbon fibers developed from shrunk stabilized fibers have a lower stacking size (Lc) and lower d spacing than fibers developed from stretched stabilized fibers. In the Raman laser scattering analysis, the overfeeding lead to shrinkage was found to increase the width of carbon basal plane (La) and the stretch process will promote the increase of the degree of graphitization. The results of the mechanical properties were showed that the stretch process and the heat-treatment temperature had improved the strength and modulus of the stabilized and the carbon fibers, the highest value of tensile strength and tensile modulus was found in 3.92GPa and 329.2GPa in the heat-treatment temperature of 1300℃and at the 1.05 of the drawing ratio. Tse-Hao Ko 柯澤豪 2003 學位論文 ; thesis 90 zh-TW |
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碩士 === 逢甲大學 === 材料科學所 === 91 === In this article, a continuous stabilization process is used to make stabilized fibers from polyacrylonitrile(PAN) fiber in different drawing ratio and then carbonized to produce carbon fibers. The experimental results showed that the diameter is decreased with the increase of the heat-treatment temperature and the drawing ratio during the stabilization and the carbonization process, the diameter was 7.39μm in 1300℃ and 1.05 of the drawing ratio. The density of stabilized and carbon fibers is increased with the increase of the drawing ratio and the heat-treat temperature. In the result of the element analysis, the oxygent content and the ratio of [O]/[C] is increased with the increase of the drawing ratio in the stabilization process. During the carbonization process, the content of the carbon in the carbon fibers, the content of carbon is over 94% when the temperature arise over 1200℃, is affect by the drawing ratio and heat-treatment temperature. The carbon fibers developed from shrunk stabilized fibers have a lower stacking size (Lc) and lower d spacing than fibers developed from stretched stabilized fibers. In the Raman laser scattering analysis, the overfeeding lead to shrinkage was found to increase the width of carbon basal plane (La) and the stretch process will promote the increase of the degree of graphitization. The results of the mechanical properties were showed that the stretch process and the heat-treatment temperature had improved the strength and modulus of the stabilized and the carbon fibers, the highest value of tensile strength and tensile modulus was found in 3.92GPa and 329.2GPa in the heat-treatment temperature of 1300℃and at the 1.05 of the drawing ratio.
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author2 |
Tse-Hao Ko |
author_facet |
Tse-Hao Ko Yen-Ju Su 蘇彥儒 |
author |
Yen-Ju Su 蘇彥儒 |
spellingShingle |
Yen-Ju Su 蘇彥儒 The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers |
author_sort |
Yen-Ju Su |
title |
The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers |
title_short |
The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers |
title_full |
The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers |
title_fullStr |
The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers |
title_full_unstemmed |
The Influence of Stretching Ratio in Stabilization on the Microstructure and Mechanical Properties of Carbon Fibers |
title_sort |
influence of stretching ratio in stabilization on the microstructure and mechanical properties of carbon fibers |
publishDate |
2003 |
url |
http://ndltd.ncl.edu.tw/handle/75cwg9 |
work_keys_str_mv |
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