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| 论文编号: |
O120090039 |
| 第一作者所在部门: |
612组 |
| 中文论文题目: |
Effect of Atmospheres on Stabilization of Polyacrylonitrile
Fibers
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| 英文论文题目: |
Effect of Atmospheres on Stabilization of Polyacrylonitrile
Fibers
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| 论文题目英文: |
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| 作者: |
孙同庆 侯永平 王浩静
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| 论文出处: |
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| 刊物名称: |
Journal Of Macromolecular Science-Pure And Applied Chemistry
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| 年: |
2009
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| 卷: |
46 |
| 期: |
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| 页: |
807-815 |
| 联系作者: |
王浩静 |
| 收录类别: |
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| 影响因子: |
0.8
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| 摘要: |
The effect of atmospheres on stabilization of polyacrylonitrile (PAN) fibers was studied by free shrinkage experiments, Fourier
transform infrared spectrometer (FT-IR), elemental analysis, metallographic microscope and tensile testing analysis. FT-IR spectra
and elemental analysis of heat treated PAN fibers showed that three main reactions took place, namely cyclization, dehydrogenation
and oxidative reactions in oxygen-containing atmospheres. Two main reactions took place, namely cyclization, dehydrogenation
reactions in pure nitrogen. The shrinkage indicated that there was crosslinking reaction in oxygen-containing atmospheres. The
shrinkage also showed that the chemical shrinkage increased with the increase of oxygen contents in atmospheres. Atmospheres had a
sizeable effect on the skin-core structure and tensile strength.When oxygen contents in atmospheres were 20%, 50%, 70% and 100%,
the thickness of the outer rings of the skin-core structure increased quickly. The core area continued to decrease and finally almost
disappeared. Also, PAN fibers which were stabilized in pure nitrogen did not have skin-core structure. In the oxygen contents which
were 20%, 50%, 70% and 100%, the tensile strength decreased quickly. The tensile strength of stabilized PAN fibers in nitrogen was
not the lowest. |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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