胡培贤,温月芳,杨永岗,刘朗
HU Pei-xian1,2, WEN Yue-fang1, YANG Yong-gang1

• 1:中国科学院山西煤炭化学研究所 中国科学院炭材料重点实验室
• 2:中国科学院山西煤炭化学研究所
• 3:中国科学院炭材料重点实验室
• 4:中国科学院山西煤炭化学研究所

摘要(Abstract)：

采用原位漫反射红外光谱(FT-IR)在线分析碳纤维表面谱图变化。结果发现,当温度升至500℃后,3260cm-1处吸收峰减弱,在3157cm-1、3048cm-1、2829cm-1和1405cm-1处新增吸收峰。用X-射线光电子能谱(XPS)对未处理与在氨气气氛中600℃处理30s后碳纤维的表面官能团组成进行分析对比发现,处理后的碳纤维表面氮元素显著增加,而氧含量降低。由FT-IR和XPS的谱图变化推测出在高温时,碳纤维表面的羟基和羧基与氨气发生反应,形成了氨基官能团。
The changes of infrared spectra for the surface of carbon fibers (CFs) were investigated on-line by FT-IR. When the reaction temperature exceeded 500 ℃, the strength of absorption peak at 3 260 cm-1 decreased and new characteristic peaks at 3 157 cm-1, 3 048 cm-1, 2 829 cm-1 and 1 405 cm-1 appeared. After been treated by free ammonia at 600 ℃ for 30 s, functional groups on the surface of the treated CFs and the untreated ones were contrasted by X-ray photoelectron spectroscopy(XPS). The nitrogen content on the surface was found to increase, while the oxygen content decreased. Concerning the changes in XPS and FT-IR spectra, it supposed that the hydroxyl and carboxyl on the surface of CFs had reacted with free ammonia at high temperature, which introduced amino groups to the surface of CFs.

关键词(KeyWords)： 碳纤维;表面处理;氨气;氨基
carbon fiber, surface treatment, free ammonia, amino group

Abstract:

Keywords:

基金项目(Foundation): 973项目(编号:2006CB605304);; 国家自然科学基金项目(编号:50604025)

作者(Author): 胡培贤,温月芳,杨永岗,刘朗
HU Pei-xian1,2, WEN Yue-fang1, YANG Yong-gang1

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