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铁氧体复合吸波剂对水泥基复合材料吸波性能的影响

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Abstract:

采用2种类型的铁氧体作为吸波剂,制备水泥基复合吸波材料。通过弓形法测定水泥基平板在8~18GHz频率范围内的反射率,研究了铁氧体的种类、2种铁氧体复合体积比对水泥复合材料吸波性能的影响。结果表明2种不同类型的铁氧体粉复合作为微波损耗剂时,不论单层还是双层水泥基层板,其吸波性能均显著高于单一的铁氧体吸波剂;当2种铁氧体总掺量为30%(质量分数)且体积比为11掺入水泥砂浆时,所制备的双层水泥板的最小反射率为–16dB,在8.3~11.5GHz和12.3~18.0GHz宽频率范围内反射率均小于–10dB。

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