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化工学报  2013 

氧化石墨烯对SiO2多孔陶瓷吸波性能的影响

DOI: 10.3969/j.issn.0438-1157.2013.07.052, PP. 2696-2700

Keywords: 石英砂,多孔陶瓷,吸波性能,石墨烯

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Abstract:

采用颗粒堆积法,以石英砂为骨料,甲基纤维素为黏结剂干压成型后,在1300℃保温1h烧结制备得到SiO2多孔陶瓷样品。通过对样品吸波性能的测试,发现样品的吸波带较宽达到9GHz,反射率约-3dB。经过浸渍氧化石墨烯后,样品的吸波性能发生较大改变。在氧化石墨烯质量分数为0.004%时,由于氧化石墨烯的涡流损耗,样品的吸波性能较纯SiO2多孔陶瓷样品的吸波性能提高75%,反射率达到-5dB。过量的氧化石墨烯使多孔陶瓷样品呈现出对电磁波的全反射。

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