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通过溶胶凝胶法,在碳纤维表面均匀包覆了一层厚度约为1μm的钡铁氧体(BaFe12O19)。采用SEM、FTIR、XRD、XPS等技术对碳纤维/钡铁氧体复合材料的组成、结构、性能进行了表征和分析。利用8mm波雷达装置测试了碳纤维、碳纤维/钡铁氧体复合材料的毫米波衰减性能。实验结果表明:由于碳纤维/钡铁氧体复合材料兼具电损耗和磁损耗吸收,其8mm波衰减性能明显优于单纯的碳纤维。
Through the sol-gel method, a uniform layer of barium ferrite (BaFe12O19) with a thickness of about 1μm was coated on the carbon fiber surface. The composition, structure and properties of carbon fiber / barium ferrite composites were characterized by SEM, FTIR, XRD and XPS. The millimeter-wave attenuation performance of carbon fiber, carbon fiber / barium ferrite composites was tested using an 8mm wave radar device. The experimental results show that the 8 mm wave attenuation performance of carbon fiber / barium ferrite composite is obviously better than that of pure carbon fiber due to the combination of electric loss and magnetic loss absorption.