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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effects of graphite additive on dielectric properties and microwave absorption properties of zinc-containing foam glass
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Effects of graphite additive on dielectric properties and microwave absorption properties of zinc-containing foam glass

机译：石墨添加剂对含锌泡沫玻璃介电性能和微波吸收性能的影响

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摘要

This paper reports effects of graphite additive on dielectric properties and microwave absorption performances of zinc-containing foam glasses. Changes of pore structure of porous glass are analyzed. One-dimensional zinc oxide crystal whiskers on walls of foam glass are observed. With the graphite additive increases, both real (ε′) and imaginary (ε″) parts of complex permittivity increase from ～ 3.25 and ～ 0.2 to ～ 7.5 and ～ 2.8, respectively. Microwave reflection loss of porous glass was calculated based on the permittivity in the range of 8.2-12.4 GHz(X-band). Reflection loss of foam glass decreases as graphite additive and the sample with 2.0 wt% graphite additive achieve reflection loss less than - 10 dB in whole X-band with thickness ranging from 2.3 to 3.5 mm. Linear relation between reduction of reflectivity and increase of graphite content is achieved. The results show that changing foaming agent additive is an efficient way to design dielectric and microwave absorption properties of foam glass. Foam glass with 1.0 wt% graphite additive may find application in photocatalytic degradation of many environmental pollutants due to its considerable zinc oxide whiskers.
机译：本文报道了石墨添加剂对含锌泡沫玻璃介电性能和微波吸收性能的影响。分析了多孔玻璃的孔结构变化。观察到泡沫玻璃壁上的一维氧化锌晶体晶须。随着石墨添加剂的增加，复介电常数的实部（ε'）和虚部（ε''）分别从〜3.25和〜0.2增加到〜7.5和〜2.8。根据介电常数在8.2-12.4 GHz（X波段）范围内，计算多孔玻璃的微波反射损耗。泡沫玻璃的反射损耗随着石墨添加剂的增加而降低，具有2.0 wt％石墨添加剂的样品在整个X波段中的反射损耗小于-10 dB，厚度范围为2.3至3.5 mm。实现了反射率降低与石墨含量增加之间的线性关系。结果表明，改变发泡剂添加剂是设计泡沫玻璃介电和微波吸收性能的有效途径。含有1.0重量％石墨添加剂的泡沫玻璃由于其大量的氧化锌晶须而可用于许多环境污染物的光催化降解。

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