A novel 3D silver nanowires@polypyrrole sponge loaded with water giving excellent microwave absorption properties
A novel 3D silver nanowires@polypyrrole sponge loaded with water giving excellent microwave absorption properties
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一种新型3D银纳米线@聚吡咯海绵，其含水，具有优异的微波吸收性能
DOI：
10.1016/j.cej.2018.07.047
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发表时间：
2018-11
影响因子：
15.1
通讯作者：
Fu Yaqin
中科院分区：
文献类型：
--
作者：
Yu lujun;Yang QiXin;Zhu Yaofeng;Li Xiang;Yang Wentong;Fu Yaqin
三维多孔结构由于其柔性、低密度和潜在的应用前景而引起了人们极大的兴趣。采用溶剂热法、原位聚合法和冷冻干燥法合成了Ag@PPy海绵。Ag@PPy海绵具有良好的弹性和吸水性能，这是由于其具有三维网络结构。用同轴线法和波导法测量了Ag@PPy海绵的微波吸收性能。结果表明，不含树脂或石蜡基质的Ag@PPy海绵的有效带宽（反射损耗值小于-10 dB）可以在5 mm厚度下覆盖整个X波段（8.2-12.4 GHz）。此外，Ag@PPy海绵的复介电常数可以通过调节含水率（0 ~ 78.4wt%）来调节。当含水率为26.2wt%时，Ag@PPy-26.2海绵具有最佳的微波吸收性能，在8.8 GHz处，厚度为3 mm时，反射损耗（RL）最小，达到−33 dB。本研究为利用水来设计微波吸收体提供了一种新的思路。
Three-dimensional (3D) porous structure has attracted considerable interest owing to its flexibility, low density and potential applications. Here, Ag@PPy sponge was synthesized via solvothermal, in situ polymerization and freeze-drying techniques. The Ag@PPy sponge exhibits well elasticity and water absorption capacities due to the 3D network structure. The microwave absorption properties of the Ag@PPy sponge were measured by coaxial line and wave guide methods. The results show that the effective bandwidth (reflection loss values of less than −10 dB) of the Ag@PPy sponge without resin or paraffin matrix could cover the whole X-band (8.2–12.4 GHz) at the thickness of 5 mm. Besides, the complex permittivity of the Ag@PPy sponge can be modulated by adjusting the water ratios from 0 to 78.4 wt%. When the water ratio is 26.2 wt%, the Ag@PPy-26.2 sponge exhibits optimal microwave absorption properties, which the minimum reflection loss (RL) value reaches −33 dB at 8.8 GHz with the thickness of 3 mm. Our research provides a new strategy to design microwave absorbers by using water.
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影响因子：
3.3
作者：
Waterhouse, GIN;Bowmaker, GA;Metson, JB
通讯作者：
Metson, JB
影响因子：
3
作者：
Xianguo Liu;Caiyun Cui;Jieyi Yu;Yuping Sun;A. Xia
通讯作者：
Xianguo Liu;Caiyun Cui;Jieyi Yu;Yuping Sun;A. Xia
影响因子：
3
作者：
Liu, Xianguo;Li, Xiaolong;Sun, Yuping
通讯作者：
Sun, Yuping
影响因子：
3.9
作者：
J. Zhao;Junpin Lin;Jun-ping Xiao;Huili Fan
通讯作者：
J. Zhao;Junpin Lin;Jun-ping Xiao;Huili Fan
影响因子：
15.1
作者：
Jiang, Yue;Chen, Yu;Sui, Guo-Xin
通讯作者：
Sui, Guo-Xin