铁氧体/石墨烯复合吸波织物的制备及性能

Preparation and Properties of Ferrite/Graphene Composite Absorbing Composites

为了制备宽频、高效柔性织物,文章采用热分解法制备了铁氧体(Fe_(3)O_(4))/石墨烯(rGO)吸波粒子,并以二浸二轧的方式将Fe_(3)O_(4)/rGO纳米粒子负载到棉织物上,以得到具有优异吸波性能的柔性织物。采用扫描电子显微镜、红外光谱仪对柔性织物的微观结构和组成进行表征,对织物的电磁参数进行测试和分析。结果表明:当改性织物Fe_(3)O_(4)/rGO负载质量比为15∶1时,柔性织物的吸波效果最优。当复合吸波材料的厚度为4 mm时,在11.3 GHz处的最小反射损耗达到-18.4 dB,有效吸收带宽范围为10.63~11.72 GHz。文章为研究高效、宽频柔性吸波材料的设计开发提供参考。

In order to prepare broadband and high-efficiency flexible fabrics,ferrite(Fe_(3)O_(4))/graphene(rGO)absorbing particles were prepared by thermal decomposition method,and Fe_(3)O_(4)/rGO nanoparticles were loaded onto cotton fabrics by double immersion and double rolling to obtain flexible fabrics with excellent absorbing properties.Scanning electron microscopy and infrared spectroscopy were used to characterize the microstructure and composition of flexible fabrics,and the electromagnetic parameters of fabrics were tested and analyzed.The results show that when the load-to-mass ratio of Fe_(3)O_(4)/rGO is 15∶1,the absorption effect of flexible fabric is the best.When the thickness of the composite absorber is 4 mm,the minimum reflection loss at 11.3 GHz reaches-18.4 dB,and the effective absorption bandwidth ranges from 10.63~11.72 GHz.This paper provides a reference for the design and development of high-efficiency and broadband flexible absorbers.