| 重铬酸钾溶液预处理及活化对炭纤维比表面积的影响 |
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| 引用本文： | 潘兵,刘秀军,马双恒.重铬酸钾溶液预处理及活化对炭纤维比表面积的影响[J].天津工业大学学报,2007,26(2):21-23. |
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| 作者姓名： | 潘兵 刘秀军 马双恒 |
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| 作者单位： | 天津工业大学,材料科学与化学工程学院,天津,300160 |
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| 摘 要： | 炭纤维在活化前比表面积小于2m^2／g，通过适当的活化方法可以不同程度提高炭纤维的比表面积．以PAN基炭纤维为原料，用K2Cr2O7溶液进行预处理，再用水蒸汽进行活化．通过考察预处理时间、K2Cr207溶液的浓度、活化时间，得到在10％K2Cr2O7溶液预处理0．5h、再水蒸汽活化2h的条件下，炭纤维的比表面积可达1023m^2／g．
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| 关 键 词： | 浸渍 PAN基炭纤维 活化 比表面积 |
| 文章编号： | 1671-024X（2007）02-0021-03 |
| 收稿时间： | 2006-09-12 |
| 修稿时间： | 2006-09-12 |
Effect of pretreated by K2Cr2O7 solution and activated on specific surface area of carbon fiber |
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| PAN Bing,LIU Xiu-jun,MA Shuang-heng.Effect of pretreated by K2Cr2O7 solution and activated on specific surface area of carbon fiber[J].Journal of Tianjin Polytechnic University,2007,26(2):21-23. |
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| Authors: | PAN Bing LIU Xiu-jun MA Shuang-heng |
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| Affiliation: | School of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China |
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| Abstract: | The specific surface area of carbon fiber is less than 2 m2/g before activation,but it can be increased in different degree with proper methods.By using the polyacrylonitrile-based(PAN) carbon fibers as materials,they were pretreated by K2Cr2O7 solution first,and then activated by vapor of water.Pretreatment time,the concentration of the K2Cr2O7 solution and the activated time are investigated.The specific surface area of activated carbon fiber is up to 1 023 m2/g under the condition of 100/0 K2Cr2O7,0.5 h of pretreatment,and 2 h of activated time. |
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| Keywords: | impregnation PAN-based carbon fibers activation specific surface area |
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