Improving carbon fiber adhesion to polyimide with atmospheric pressure plasma treatment
Improving carbon fiber adhesion to polyimide with atmospheric pressure plasma treatment
复制标题
通过常压等离子体处理提高碳纤维对聚酰亚胺的粘合力
DOI：
10.1016/j.surfcoat.2011.04.016
复制
发表时间：
2011-10
影响因子：
5.4
通讯作者：
Qiu, Yiping
中科院分区：
文献类型：
--
作者：
Xie, Jianfei;Xin, Danwei;Cao, Hongyan;Wang, Cuntao;Zhao, Yi;Yao, Lan;Ji, Feng;Qiu, Yiping
等离子处理经常用于改性碳纤维表面，以提高纤维与基体的粘合力，尽管它也可能影响碳纤维的拉伸强度。为了确定大气压等离子体处理对碳纤维拉伸强度和与聚酰亚胺的界面结合强度的影响，用大气压氧/氦等离子体对聚丙烯腈（PAN）基碳纤维进行不同持续时间的处理。研究了等离子体处理前后不同标距下纤维拉伸强度的变化。使用单纤维复合材料测试系统评估碳纤维和热塑性聚酰亚胺基体之间的界面结合。对单纤维拉伸试验数据的威布尔分析表明，等离子处理后，短标距下的拉伸强度没有明显变化，而较大标距下的纤维强度则趋于下降。扫描电子显微镜 (SEM) 和原子力显微镜 (AFM) 显示等离子体处理使纤维表面变得粗糙。纤维表面的 X 射线光电子能谱 (XPS) 分析表明，等离子体处理后氧浓度显着增加，含氧官能团在 32 秒处理时间后达到最大水平，进一步增加处理时间并不能实现更高水平的氧化。根据改进的 Wilhelmy 方法测量，等离子体处理降低了动态水接触角并增加了碳纤维的表面能。常压等离子体处理32s后界面剪切强度提高了21%。结论是含氧官能团的增加和表面拓扑结构的改变可能共同有助于纤维/树脂界面粘合力的改善。
Plasma treatment is frequently used to modify carbon fiber surfaces to improve adhesion of the fiber to matrices although it may also influence carbon fiber tensile strength. In order to determine the effect of atmospheric pressure plasma treatment on carbon fiber tensile strength and interfacial bonding strength to polyimide, polyacrylonitrile (PAN) based carbon fibers are treated with atmospheric pressure oxygen/helium plasmas for different durations. Tensile strength change of the fiber is studied at different gage lengths before and after the plasma treatment. Interfacial bonding between the carbon fiber and a thermoplastic polyimide matrix is evaluated using a single fiber composite test system. Weibull analysis of the single fiber tensile test data shows no obvious changes in the tensile strength at short gage lengths after plasma treatment while the fiber strength tends to decrease at larger gage lengths. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) show that the plasma treatments roughen the fiber surfaces. X-ray photoelectron spectroscopy (XPS) analysis of fiber surface shows a significant increase of oxygen concentration after plasma treatment and the oxygen containing functional groups reach their maximum levels after 32s treatment time and further increasing treatment time does not achieve a higher level of oxidation. Plasma treatments decrease dynamic water contact angles and increase the surface energy of the carbon fibers as measured by the modified Wilhelmy method. The interfacial shear strength is improved 21% after the atmospheric pressure plasma treatment for 32s. It is concluded that the increase of oxygen containing functional groups and changing of the surface topology may contribute collectively to the improvement of fiber/resin interfacial adhesion.
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影响因子：
5.2
作者：
R. B. Henstenburg;S. Phoenix
通讯作者：
R. B. Henstenburg;S. Phoenix
影响因子：
10.9
作者：
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通讯作者：
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影响因子：
3
作者：
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通讯作者：
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影响因子：
6.7
作者：
Li, J.
通讯作者：
Li, J.
影响因子：
10.9
作者：
Montes-Morán, MA;Martínez-Alonso, A;Bernardo, CA
通讯作者：
Bernardo, CA