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2222材料工程  2022, Vol. 50 Issue (9): 120-126    DOI: 10.11868/j.issn.1001-4381.2021.000554
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
羰基铁室温硫化硅橡胶复合材料的吸波性能
米玉洁1, 宋明明2, 张存瑞1,*(), 张贵恩1, 王月祥1, 常志敏1
1 中国电子科技集团公司第三十三研究所 材料部, 太原 030032
2 中国商飞上海飞机设计研究院 制造支持工程部, 上海 100029
Microwave absorbing properties of carbonyl iron room temperature vulcanized silicone rubber composites
Yujie MI1, Mingming SONG2, Cunrui ZHANG1,*(), Guien ZHANG1, Yuexiang WANG1, Zhimin CHANG1
1 Materials Department, No.33 Research Institute of China Electronics Technology Group, Taiyuan 030032, China
2 Production Support Engineering Department, COMAC Shanghai Aircraft Design & Research Institute, Shanghai 100029, China
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摘要 

为制备兼具力学性能和电磁吸收性能的高带宽吸波材料,采用纳米粒子改性及物理共混法设计制备一种以聚二甲基硅氧烷为基体的羰基铁室温硫化硅橡胶复合材料,系统地分析了该复合材料的力学性能与吸波性能。结果表明: 当白炭黑质量分数为3%时,复合材料的综合力学性能最佳,便于材料加工;该复合材料为磁损耗型吸波材料,材料的衰减常数随羰基铁含量和频率呈正相关。根据仿真计算得出,在2~18 GHz下,随着复合材料厚度和羰基铁含量增加,电磁波的吸收峰都逐渐向低频移动,当复合材料的厚度为1.5 mm且羰基铁质量分数为75%时,吸波材料有效吸收带宽可以达到9.07 GHz,占目标带宽56.68%。在实际应用中可根据应用场景需求来优化配方和控制材料厚度,达到最佳的吸波效果。

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米玉洁
宋明明
张存瑞
张贵恩
王月祥
常志敏
关键词 羰基铁聚二甲基硅氧烷吸波性能复合材料高带宽    
Abstract

In order to prepare a high-bandwidth absorbing material with both mechanical properties and electromagnetic absorption properties, a nano-particle modification and physical blending method were used to design and prepare a carbonyl iron room temperature vulcanized silicone rubber composite material based on polydimethylsiloxane. The mechanical properties and wave absorbing properties of the composite material were systematically analyzed. The results show that when the mass fraction of white carbon black is 3%, the composite material has the best comprehensive mechanical properties and is convenient for material processing; the composite material is a magnetic loss type wave absorbing material, and the attenuation constant of the material is positively correlated with the carbonyl iron content and frequency. According to simulation calculations, the absorption peak of electromagnetic waves gradually shifts to low frequency as the thickness of the composite material and the content of carbonyl iron are increased at 2-18 GHz. When the thickness of the composite material is 1.5 mm and the mass fraction of carbonyl iron is 75%, the effective absorption bandwidth of the absorbing material can reach 9.07 GHz, accounting for 56.68% of the target bandwidth. In practical applications, the formula can be optimized and the thickness of the material can be controlled according to the needs of the application scenario to achieve the best absorbing effect.

Key wordscarbonyl iron    polydimethylsiloxane    microwave absorbing property    composite materials    high bandwidth
收稿日期: 2021-06-15      出版日期: 2022-09-20
中图分类号:  TB332  
通讯作者: 张存瑞     E-mail: 15203466966@163.com
作者简介: 张存瑞(1983—), 男,高级工程师,研究方向为吸波材料,联系地址: 山西省太原市彩虹街1号中国电子科技集团公司第三十三研究所材料部(030032),E-mail: 15203466966@163.com
引用本文:   
米玉洁, 宋明明, 张存瑞, 张贵恩, 王月祥, 常志敏. 羰基铁室温硫化硅橡胶复合材料的吸波性能[J]. 材料工程, 2022, 50(9): 120-126.
Yujie MI, Mingming SONG, Cunrui ZHANG, Guien ZHANG, Yuexiang WANG, Zhimin CHANG. Microwave absorbing properties of carbonyl iron room temperature vulcanized silicone rubber composites. Journal of Materials Engineering, 2022, 50(9): 120-126.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000554      或      http://jme.biam.ac.cn/CN/Y2022/V50/I9/120
Fig.1  羰基铁改性机理图
Fig.2  羰基铁处理前后的SEM照片
(a)处理前;(b)处理后
Content of silica/% Hardness Tensile strength/MPa Elongation/% Leveling time/s
0 25 1.0 289.30 30
1 38 1.3 315.45 50
3 44 1.7 340.55 63
5 48 2.3 320.67 120
10 55 1.6 250.31
Table 1  不同白炭黑含量下羰基铁室温硫化硅橡胶复合材料的物理性能
Fig.3  羰基铁室温硫化硅橡胶复合材料的介电常数
(a)复数介电常数实部;(b)复数介电常数虚部
Fig.4  羰基铁室温硫化硅橡胶复合材料的磁导率
(a)复数磁导率实部;(b)复数磁导率虚部
Fig.5  羰基铁室温硫化硅橡胶复合材料的电损耗因子(a)和磁损耗因子(b)
Fig.6  羰基铁室温硫化硅橡胶复合材料的衰减常数
Fig.7  羰基铁室温硫化硅橡胶复合材料的吸波性能
(a)羰基铁含量为75%;(b)羰基铁含量为80%;(c)羰基铁含量为85%
Fig.8  羰基铁室温硫化硅橡胶复合材料有效吸收带宽
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