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材料导报  2018, Vol. 32 Issue (18): 3123-3127    https://doi.org/10.11896/j.issn.1005-023X.2018.18.005
  无机非金属及其复合材料 |
三维织物石膏基微波吸收材料的制备及性能
解帅1,2, 冀志江1, 水中和2, 侯国艳1, 李彬1, 王静1
1 中国建筑材料科学研究总院绿色建筑材料国家重点实验室,北京 100024;
2 武汉理工大学材料科学与工程学院,武汉 430070
Preparation and Properties of 3D Fabric-Gypsum Based Microwave Absorbing Materials
XIE Shuai1,2, JI Zhijiang1, SHUI Zhonghe2, HOU Guoyan1, LI Bin1, WANG Jing1
1 State Key Laboratory of Green Building Materials,China Building Materials Academy, Beijing 100024;
2 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070
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摘要 采用浸渍工艺在三维织物表面包覆炭黑,并将其与石膏复合制备石膏基微波吸收材料。利用弓形反射法测试了该复合材料在2~18 GHz内的吸波性能,结果表明吸波性能随炭黑含量的增加而增强,三维织物的最佳厚度为6 mm。三维织物厚度为6 mm、乙炔炭黑含量为24%的复合材料在2~18 GHz内对电磁波的反射损耗均低于-5 dB,最低反射损耗可达-28.3 dB。三维织物的特殊结构不仅能够有效改善材料的阻抗匹配,还能够增加材料的电磁波损耗路径,从而达到增强损耗能力、拓宽吸波频宽的目的。此外,三维织物还能够明显增强石膏基材料的抗折性能。
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解帅
冀志江
水中和
侯国艳
李彬
王静
关键词:  三维织物  石膏基复合材料  吸波材料  反射损耗    
Abstract: Gypsum-based microwave absorbing materials were prepared by introducing 3D fabrics, which were coated with carbon black (CB) by impregnation technology, and the absorbing properties of the composites were tested by NRL-arc method in 2—18 GHz frequency range. The results indicate that the reflection loss of the composites increases with the increase of CB content, and the optimum thickness of 3D fabric is 6 mm. When the thickness of 3D fabric is 6 mm and the CB content is 24%, the reflection loss of the composites is less than -5 dB in the whole frequency range of 2—18 GHz, and the lowest reflection loss reaches -28.3 dB. The special structure of 3D fabric can not only improve impedance matching condition, but also provid more wave attenuation path, resulting in the high absorption capacity and wide bandwidth. Moreover, the flexural strength of gypsum composites can be increased by 3D fabrics.
Key words:  3D fabrics    gypsum composites    absorbing materials    reflection loss
                    发布日期:  2018-10-18
ZTFLH:  TB34  
基金资助: 十三五国家重点研发计划(2016YFC070090302)
通讯作者:  冀志江:1964年生,博士,教授,博士研究生导师,主要研究方向为环境功能材料 E-mail:jzj1964@sina.com   
作者简介:  解帅:男,1988年生,博士研究生,主要研究方向为电磁波吸收复合材料 E-mail:xs5649@163.com
引用本文:    
解帅, 冀志江, 水中和, 侯国艳, 李彬, 王静. 三维织物石膏基微波吸收材料的制备及性能[J]. 材料导报, 2018, 32(18): 3123-3127.
XIE Shuai, JI Zhijiang, SHUI Zhonghe, HOU Guoyan, LI Bin, WANG Jing. Preparation and Properties of 3D Fabric-Gypsum Based Microwave Absorbing Materials. Materials Reports, 2018, 32(18): 3123-3127.
链接本文:  
http://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2018.18.005  或          http://www.mater-rep.com/CN/Y2018/V32/I18/3123
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