羰基铁/有机硅环氧树脂复合材料的电磁性质及微波吸收性质

功能材料, 2011, 42(2): 218-221.

羰基铁/有机硅环氧树脂复合材料的电磁性质及微波吸收性质

崔荣振 ^1, , 王博翀 ^2, , 王涛 ^3, , 李发伸 ^4,

1.兰州大学应用磁学所,甘肃,兰州,730000

2.兰州大学应用磁学所,甘肃,兰州,730000

3.兰州大学应用磁学所,甘肃,兰州,730000

4.兰州大学应用磁学所,甘肃,兰州,730000

基金项目: 国家自然科学基金资助项目(10774061)

关键词：微波吸收 , 反射损耗 , 复介电常数 , 复磁导率 , 羰基铁粉

Electromagnetic properties and microwave absorbing characteristics of carbonyl iron/Si-epoxy matrix composites

为了解决无线电通信技术高速发展带来的日益严重的电磁污染和干扰,电磁波吸收材料的研究变得极为重要.制备了羰基铁粉分散在不同基质(石蜡,环氧树脂和有机硅环氧树脂)的复合材料的样品.在3种不同基质样品(羰基铁粉体积分数40%)中,以有机硅环氧树脂为基质样品的反射损耗最大,相对带宽最大,所以把有机硅环氧树脂选为最优基质,并且制备了不同体积分数的羰基铁/有机硅环氧树脂复合材料,研究了它们的电磁性质和反射损耗性质.其中体积分数为50%的样品通过调节样品厚度,反射损耗可在稍低频范围(1～3GHz)达到-10dB(90%的吸收率).

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羰基铁/有机硅环氧树脂复合材料的电磁性质及微波吸收性质

Electromagnetic properties and microwave absorbing characteristics of carbonyl iron/Si-epoxy matrix composites

参考文献