铁氧体及碳纤维填充水泥基复合材料吸波性能

Study on Radar Absorbing Properties of Cement-Based Composites Filled with Short Carbon Fiber/Ferrite

使用溶胶凝胶法，制备了W型BaCo2Fe16O27六角铁氧体，研究了该铁氧体及短切碳纤维填充的水泥基复合材料吸波性能．研究表明，在Ku波段（12～18GHz），铁氧体含量为35％（质量分数，下同）时，复合材料最大微波吸收值为-8．7dB，出现在14．3GHz附近；当铁氧体含量为35％，碳纤维含量为0．2％时，复合材料具有最小约-5dB，最大约-23．7dB的微波吸收值．

Sol-gel method was used to prepare W-type BaCo2Fe16 027 hexaferrite. Microwave absorbing properties of cement-based composites infilled by the ferrite and short carbon fiber were investigated. The results show that at Ku wave range （12-18 GHz） the max microwave absorption of the composite filled with the ferrite （35% mass fraction） is -8.7 dB, nearby 14. 3 GHz. But the absorptions can reach maximum -23.7 dB and minimum -5 dB when the composite is filled with the ferrite （35% mass fraction） and the carbon fiber （0.2% mass fraction）.