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以碳酸锰、氧化锌和氧化铁为原料,经球磨、煅烧得到锰-锌铁氧体,然后与水泥复合制得水泥基复合吸波材料,研究铁氧体吸波剂掺量、胶凝材料品种和试样表面形状对复合材料吸波性能的影响及其力学性能。结果表明:铁氧体在水泥材料中较稳定,其用量和复合材料的表面形状对吸波性能均有较大程度的影响;在8~12.5GHz频率范围内,掺35%铁氧体的水泥基复合材料的反射率基本上都<-6dB,而粗糙面试样的反射率均<-7dB,最小反射率达-10.5dB;其28d强度与纯水泥样品相比约有下降。
Taking manganese carbonate, zinc oxide and iron oxide as raw materials, the manganese-zinc ferrite is obtained through ball milling and calcination, and then the composite material is recombined with cement to prepare a cement-based composite absorbing material, and the content of the ferrite absorbing agent, the cementitious material Effects of Species and Specimen Surface Shape on Microwave Absorbing Property of Composites and Their Mechanical Properties. The results show that ferrite is more stable in cementitious materials, and the amount of the ferrite and the surface shape of the composite have a greater influence on the microwave absorption performance. In the frequency range of 8 ~ 12.5GHz, 35% ferrite cement The reflectivity of the matrix composites was basically <-6dB, while the roughness of the samples was <-7dB, the minimum reflectance was -10.5dB. The 28d intensity of the composites decreased slightly compared with the pure cement samples.