在空气气相环境以及蒸馏水液相环境下对聚丙烯腈(PAN)基碳纤维丝束表面进行激光辐照处理,控制激光辐照功率不变而改变碳纤维丝束移动速度,利用扫描电镜和能谱仪对激光辐照处理后的样品进行表征,初步分析了激光改性后PAN基碳纤维表面形貌以及表面元素含量的变化。结果表明:碳纤维表面受激光辐照处理,表面产生许多沟壑,粗糙度增加,在液相环境下处理后的纤维比气相环境下沟壑更多,且表面含氧量增多,O/C比增大。碳纤维受激光辐照处理的时间不同也会影响其表面形貌和表面元素的含量。
The surface of the PAN-based carbon fiber(CF) tow was treated by laser irradiation in the air vapor environment and the distilled water liquid environment.The laser irradiation power was controlled to change the moving speed of the CF tow,and The samples treated by laser irradiation were characterized by the SEM scanning electron microscope and the EDS energy spectrometer.According to the processed samples for characterization,the surface morphology and surface element content changes of PAN-based CF after laser modification were analyzed.The results shown that the surface of the CF was treated by laser radiation,and the surface had many gullies and the roughness increased.The CF after treatment in the liquid environment had more gullies than in the gas environment.The surface oxygen content increased,and the O/C ratio increased.The time that the CF was irradiated by laser will also affect its surface morphology and surface element content.
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基金资助
中央高校基本科研业务费项目(XK1802-3)
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