用于ETC系统的羰基铁粉二氧化钛复合吸波材料

金属功能材料, 2014, 21(1): 21-26.

用于ETC系统的羰基铁粉二氧化钛复合吸波材料

王舒阳 ^1, , 颜铄清 ^2, , 李启凡 ^3, , 陈中艳 ^4, , 冯则坤 ^5,

1.华中科技大学光学与电子信息学院,湖北武汉430074

2.华中科技大学光学与电子信息学院,湖北武汉430074

3.华中科技大学光学与电子信息学院,湖北武汉430074

4.华中科技大学光学与电子信息学院,湖北武汉430074

5.华中科技大学光学与电子信息学院,湖北武汉430074

关键词： ETC , 吸波材料 , 羰基铁粉 , 二氧化钛

Composite Microwave Absorber for ETC Using Fe and TiO2

WANG Shu-yang ^1, , YAN Shuo-qing ^2, , LI Qi-fan ^3, , CHEN Zhong-yan ^4, , FENG Ze-kun ^5,

1.华中科技大学光学与电子信息学院,湖北武汉430074

2.华中科技大学光学与电子信息学院,湖北武汉430074

3.华中科技大学光学与电子信息学院,湖北武汉430074

4.华中科技大学光学与电子信息学院,湖北武汉430074

5.华中科技大学光学与电子信息学院,湖北武汉430074

Keywords： ETC , microwave absorber , Fe , TiO2

将羰基铁粉和二氧化钛与橡胶混合,采用压延法制备了应用在工作频率为5.8 GHz的电子不停车收费系统(ETC)中的吸波材料,运用矢量网络分析仪测试了材料的复磁导率与复介电常数在2.0～18.0 GHz范围的频谱特性,并在微波暗室内测试了材料的反射率.结果表明,Fe与TiO2在7∶3质量比混合下性能最佳,实验探讨了样品厚度对材料吸波特性的影响,确定厚度在1.7 mm时,材料吸收峰值位于ETC所工作的5.8 GHz频率,实验测试了材料在电磁波从不同角度入射条件下的反射率,垂直入射情况下效果最佳,可达-30 dB.

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