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采用霍尔源辉光放电产生氧等离子体和氮等离子体,对成型碳纤维/树脂复合材料进行表面处理,通过浸润性分析、红外光谱分析和扫描电镜分析,探究氮、氧等离子体对碳纤维/树脂复合材料的影响,同时考察处理前后碳纤维/树脂复合材料表面基团和形貌的变化。结果显示氮、氧等离子体处理后碳纤维/树脂复合材料与去离子水的接触角随气压和电流的增大均先迅速降低再缓慢增加,在电流为1.0 A,气压为1.0 Pa时,处理结果较佳,氧等离子体处理后碳纤维/树脂复合材料在去离子水中活化时效性稍强于氮等离子体;氮、氧等离子体处理后碳纤维/树脂复合材料表面刻蚀现象明显,粗糙度提高,纤维树脂间粘连程度增加,红外分析表明甲基、酯基被打断,分别引入CH2-O-CH2和C=N、C≡N等极性基团,上述结果表明:氮、氧等离子体处理是提高成型碳纤维/树脂复合材料表面性能的有效方法。
The carbon fiber / resin composites were surface-treated with Hall-source glow discharge to generate oxygen plasma and nitrogen plasma. The effects of nitrogen and oxygen plasma on carbon fiber / resin were investigated by means of infiltration analysis, infrared spectroscopy and scanning electron microscopy. Composites, and investigate the changes of the surface groups and morphology of carbon fiber / resin composites before and after treatment. The results show that the contact angle of carbon fiber / resin composite with deionized water decreases rapidly and then increases slowly with the increase of pressure and current when the plasma is treated with nitrogen and oxygen plasma. When the current is 1.0 A and the pressure is 1.0 Pa, It is preferable that the carbon fiber / resin composites activated by oxygen plasma have a slightly better aging effect in deionized water than nitrogen plasma. The surface etching of carbon fiber / resin composite after nitrogen and oxygen plasma treatment is obvious, the roughness is increased, Infrared analysis showed that the methyl group and the ester group were interrupted and introduced polar groups such as CH2-O-CH2 and C = N, C≡N, respectively. The results indicated that the plasma treatment of nitrogen and oxygen was An effective way to improve the surface properties of carbon fiber / resin composites.