文章摘要
导电聚苯胺/泡沫玻璃复合吸波材料
Conductive polyaniline/foam glass composite absorbing material
投稿时间:2019-04-10  修订日期:2019-05-13
DOI:
中文关键词: 原位聚合  乳液聚合  泡沫玻璃  聚苯胺  吸波性能
英文关键词: in-situ  emulsion polymerization  foam glass  polyaniline  microwave absorbing
基金项目:
作者单位E-mail
涂金强 天津大学 marintjq@163.com 
朱玉梅 天津大学 tjuzhuyumei@163.com 
李志宏 天津大学  
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中文摘要:
      以硼玻璃粉为原料,炭黑为发泡剂,三氧化二铁为添加剂,制备得到泡沫玻璃基体。再以苯胺(An)为单体,过硫酸铵(APS)为引发剂,通过原位聚合法和乳液聚合法制备了导电聚苯胺/泡沫玻璃复合材料。采用FTIR、XRD和SEM对泡沫玻璃和复合材料的形貌、结构进行了表征,矢量网格分析仪测量了材料的电磁参数,并模拟计算了材料的反射损耗。结果表明,当炭黑含量为0.03wt%,炭黑和三氧化二铁的摩尔比为3:2时,制备的泡沫玻璃气孔尺寸在1mm-1.2mm,抗压强度在1.7MPa-2.45MPa。电磁参数测试和反射损耗的结果表明,当聚苯胺的浓度为0.1mol/l时,复合材料的吸波性能最好。原位聚合所得复合材料最小反射损耗为-12.56dB,有效带宽为2GHz(8.2GHz-10.2GHz)。乳液聚合所得材料最小反射损耗为-13.38dB,有效带宽为2.2GHz(8.2GHz-10.4GHz)。
英文摘要:
      A borosilicate glass powder is used as a raw material, carbon black is used as a foaming agent, and ferric oxide is used as an additive to prepare a foam glass substrate. Conductive polyaniline/foam glass compo-sites were prepared by in-situ polymerization and emulsion polymerization using aniline (An) as mono-mer and ammonium persulfate (APS) as initiator. The morphology and structure of foam glass and com-posites were characterized by FTIR, XRD and SEM. The electromagnetic parameters of the materials were measured by vector grid analyzer, and the reflection loss of the materials was simulated. The results show that when the carbon black content is 0.03wt% and the molar ratio of carbon black to ferric oxide is 3:2, the prepared foam glass has a pore size of 1 mm to 1.2 mm and a compressive strength of 1.7 MPa to 2.45 MPa. The results of electromagnetic parameter test and reflection loss show that the composite has the best absorbing property when the concentration of polyaniline is 0.1mol/l. The minimum reflection loss of the composite obtained by in-situ polymerization was -12.56 dB, and the effective bandwidth was 2 GHz (8.2 GHz - 10.2 GHz). The minimum reflection loss of emulsion polymerization is -13.38dB, and the effective bandwidth is 2.2GHz (8.2GHz-10.4GHz).
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