Al薄膜对玻璃纤维增强树脂基复合材料电磁性能的影响

doi:10.11900/0412.1961.2017.00178

金属学报

2017, Vol. 53

Issue (11): 1511-1520 DOI: 10.11900/0412.1961.2017.00178

研究论文

本期目录 | 过刊浏览

Al薄膜对玻璃纤维增强树脂基复合材料电磁性能的影响

陈育秋^1,², 祖亚培¹, 宫骏¹, 孙超¹(

), 王晨³

1 中国科学院金属研究所沈阳 110016
2 中国科学院大学北京 100049
3 澳汰尔工程软件(上海)有限公司上海 200436

Effect of Al Film on the Electromagnetic Properties of Glass Fiber Reinforced Resin Matrix Composite

Yuqiu CHEN^1,², Yapei ZU¹, Jun GONG¹, Cao SUN¹(

), Chen WANG³

1 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 Altair Engineering Software (Shanghai) Co., Ltd., Shanghai 200436, China

引用本文:

陈育秋, 祖亚培, 宫骏, 孙超, 王晨. Al薄膜对玻璃纤维增强树脂基复合材料电磁性能的影响[J]. 金属学报, 2017, 53(11): 1511-1520.
Yuqiu CHEN, Yapei ZU, Jun GONG, Cao SUN, Chen WANG. Effect of Al Film on the Electromagnetic Properties of Glass Fiber Reinforced Resin Matrix Composite[J]. Acta Metall Sin, 2017, 53(11): 1511-1520.

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摘要:

利用高频电磁场计算软件FEKO对Al薄膜与玻璃纤维增强树脂基复合材料的电磁波反射率进行了仿真计算。研究了复合材料介电常数实部ε_r、电损耗角正切tanδ_ε、磁导率μ_r及磁损耗角正切tanδ_μ对反射率的影响,并通过仿真计算与实际测试结果对比,确定了仿真模型中玻璃纤维增强树脂基复合材料的等效电磁参数。研究了Al薄膜与玻璃纤维增强树脂基复合材料结构中Al薄膜厚度对反射率的影响,仿真计算与测试结果表明,Al薄膜厚度对复合材料的反射率影响较大,Al薄膜与玻璃纤维增强树脂基复合材料结构中存在一个最佳电阻值,使该结构谐振反射最小。根据传输线理论,利用MATLAB对谐振最强时对应电阻的大小进行了求解。通过计算不同结构的Al薄膜与玻璃纤维增强树脂基复合材料,得到了仿真模型中Al薄膜与磁控溅射制备Al薄膜的厚度关系。确定了仿真模型中各材料的等效电磁参数,仿真计算结果与测试结果吻合较好。

关键词 ： Al薄膜, 玻璃纤维增强树脂基复合材料, 等效电磁参数, 仿真, 谐振, 电阻

Abstract：

Metallic thin films have many properties that bulk metals do not possess, such as high impedance. Recently, increasing attention has been paid to high impedance surface in the design of antennas and absorbers. Metallic thin films used in composite materials can realize the perfect matching of electromagnetic wave in different materials. The use of metallic thin films in electromagnetic functional materials results in significant increase of the absorbing intensity and operating bandwidth. But it usually needs to pay a huge amount of manpower, material resources and a longer period of time to design excellent electromagnetic functional materials with metallic films. So it is greatly significant to understand clearly the electromagnetic influence of metallic film for designing excellent performance materials and saving costs by simulation software. Al film is a typical non-magnetic metal film. In this work, the electromagnetic reflectivity of Al films and glass fiber reinforced resin matrix composite had been studied. High frequency electromagnetic field calculation software FEKO was employed to calculate the reflection coefficient of the composites. The effect of composites' real part of permittivity ε_r, dielectric loss tangent tanδ_ε, permeability μ_r and magnetic loss tangent tanδ_μ on microwave reflectivity had been discussed. The equivalent electromagnetic parameters of glass fiber reinforced resin matrix composite had been obtained through a comparison between simulation and experimental results. Due to resonance phenomena of the embedded Al film in the glass fiber reinforced resin matrix composite with certain thickness, there is an optimum resistance value of Al film that makes the composite structure have minimum reflection. Through the calculation of Al film and glass fiber reinforced resin matrix composite with different structure, the thickness relationship between Al films in calculation and Al films prepared by magnetron sputtering had been obtained. According to the theory of transmission line, the resistance of resonance is analyzed by MATLAB. This method is also applicable to the resistance solution of the homogeneous metal films at any position in the composite or frequency selective surfaces. The equivalent electromagnetic parameters of Al film and glass fiber reinforced resin matrix composite in simulation had been ascertained, and the simulation results agree well with the experimental results.

Key words： Al film glass fiber reinforced resin matrix composite effective electromagnetic parameter simulation resonance resistance

收稿日期: 2017-05-09

ZTFLH:

O484.5

作者简介:

作者简介陈育秋,女,1986年生,博士生

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https://www.ams.org.cn/CN/10.11900/0412.1961.2017.00178 或 https://www.ams.org.cn/CN/Y2017/V53/I11/1511

图1 频率选择表面单元

图2 2种复合结构仿真模型

表1 纤维、树脂及其构成的复合材料体系的介电性能[13]

图3 复合材料的介电常数实部εr及电损耗角正切tanδε

图4 复合材料截面SEM像

图5 εr对复合材料反射率影响

图6 tanδε对复合材料反射率的影响

图7 磁导率实部μr对复合材料反射率的影响

图8 磁损耗角正切tanδμ对复合材料反射率的影响

图9 复合材料反射率计算与测试对比曲线

图10 Al薄膜与8 mm复合材料的反射率计算与测试对比曲线

图11 不同厚度Al薄膜在8 mm复合材料表面和中间位置的反射率仿真计算曲线

图12 金属膜与介质复合结构示意图及传输线等效电路模型

图13 8 mm复合材料与Al薄膜复合结构谐振时对应的Al膜电阻曲线

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