磷酸盐溶液中碳纤维表面电化学改性

曹海琳; 黄玉东; 张志谦; 孙举涛

磷酸盐溶液中碳纤维表面电化学改性

哈尔滨工业大学应用化学系, 哈尔滨 150001

基金项目: 哈尔滨工业大学校基金资助(HIT.2002.57)

详细信息

通讯作者:
黄玉东,教授,研究方向:先进聚合物基复合材料性能设计与优化研究 E-mail:huangyd@hit.edu.cn

中图分类号: TB332
计量
- 文章访问数: 1562
- PDF下载量: 919
- 被引次数: 0
出版历程
- 收稿日期: 2003-07-14
- 修回日期: 2003-10-23
- 刊出日期: 2004-06-15

ELECTROCHEMICAL TREATMENT OF CARBON FIBERS IN AQUEOUS PHOSPHATE

Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China

摘要

摘要: 对比研究(NH₄)₂HPO₄和NH₄H₂PO₄两种不同电解质对碳纤维电化学改性效果的影响。通过拉丁方试验,研究了各改性参数对纤维表面改性效果的影响程度,采用XPS、AFM、BET技术对纤维表面化学组成、形貌及其比表面积的变化进行了表征分析。结果表明:以(NH₄)₂HPO₄为电解质处理时改性效果主要受相对电流密度的影响,而以NH₄H₂PO₄为电解质时电解液浓度是最主要的影响因素;在(NH₄)₂HPO₄电解液中,纤维表面氧化刻蚀温和,改性效果显著,层间剪切强度可提高到79.8MPa,而在NH₄H₂PO₄电解液中,纤维表面受到较强烈氧化刻蚀,本体强度损失较大,复合材料层间剪切强度仅能提高到70.8MPa。
- (NH₄)₂HPO₄ /
- NH₄H₂PO₄ /
- 电化学改性 /
- 碳纤维
Abstract: The effects of electrochemical treatment of carbon fibers in different aqueous phosphate were investigated. The Latin square experiment was used to optimize the treatment parameters. The chemical components, morphology and specific area of fibers surface were characterized by using XPS, AFM and BET technique.The results indicate that the specific current density and the electrolyte concentration are the significant factors in fiber surface treatment in (NH₄)₂HPO₄ and NH₄H₂PO₄ solutions, respectively. The effect of modification is very outstanding in (NH₄)₂HPO₄ solution because the oxidation and corrosion are moderate, and the ILSS of its composite is increased to 79.8 MPa. Whereas the effect of modification is difficult to control in NH₄H₂PO₄ solution due to the drastic oxidation and corrosion, the tensile strength of the bulk fiber is damaged greatly and the ILSS of its composites is increased only to 70.8 MPa.
- (NH₄)₂HPO₄ /
- NH₄H₂PO₄ /
- electrochemical treatment /
- carbon fiber