PMI泡沫夹层复合材料电性能设计与实验研究

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (4): 82-87.

PMI泡沫夹层复合材料电性能设计与实验研究

单忠伟¹,边佳燕^2*,程翔¹,刘钧²

1.中国人民解放军海军驻南京九二四厂军事代表室,南京211106;
2.国防科学技术大学航天与材料工程学院,长沙410073

收稿日期:2015-11-04 出版日期:2016-04-28 发布日期:2016-04-28
通讯作者: 边佳燕(1991-),女,在读研究生,主要从事聚合物基复合材料研究,15570862140@163.com。
作者简介:单忠伟(1969-),男,工程师,主要从事海军雷达侦察设备监造。

ELECTRICAL PERFORMANCE DESIGN AND EXPERIMENTAL STUDY OFPMI FOAM CORED SANDWICH COMPOSITE

SHAN Zhong-wei¹, BIAN Jia-yan^2*, CHENG Xiang¹, LIU Jun²

1.The Military Representatives Office of PLA Navy in 924th Factory, Nanjing 211106, China;
2.College of Aerospace and Materials Engineering, National University of Defense Technology,Changsha 410073, China

Received:2015-11-04 Online:2016-04-28 Published:2016-04-28

摘要/Abstract

摘要： 聚甲基丙烯酰亚胺(PMI)泡沫夹层复合材料具有优异的宽频透波性能,被广泛用于制备透波雷达天线罩。为了设计满足宽频透波要求的某型天线罩,从复合材料结构原理出发,选择石英纤维增强环氧树脂复合材料为蒙皮,PMI泡沫为芯材的A夹层结构方案,采用三维全波电磁场仿真软件(CST软件)计算比较了不同蒙皮厚度和芯材厚度对A夹层结构透波性能的影响,得到了理论最优结构。进一步的平板试验结果表明,透波率的实际测试值与理论计算结果基本吻合,可见设计的A夹层复合材料结构可满足某型天线罩的宽频透波要求。

关键词: PMI泡沫夹层复合材料, 电性能, 蒙皮厚度, 芯材厚度, CST软件

Abstract: Radome is used to protect the antenna from the influence of natural environment, while at the same time, radome needs to guarantee the normal working of the antenna. Therefore, radome not only needs to has good mechanical performance, but also need excellent electrical performance. Thus, it is important to choose suitable materials and structure of radome. The polymethacrylimide (PMI) foam cored sandwich composite material has an excellent broadband penetration performance, and it is widely used to product radomes. Previous studies have found that electrical performance of radomes is connected with material system, structure type, thickness of face and thickness of core. In order to design a radome which meets the broadband penetration requirement, this paper chooses suitable material system, favorable structure type, optimum combination of thicknesses of face and core. Based on the principle of composite materials structure, the structure type is A-type sandwich structure, the face of the sandwich composite is quartz glass reinforced epoxy resin composite materials and the core of the sandwich composite is PMI foam. Both the materials of face and core have lower dielectric constant, lower dielectric loss and higher strength than most other material systems. Next, the effects of thicknesses of face and core on the wave permeability of A-type sandwich structure are calculated by CST software. Insertion loss-frequency curve can be obtain by putting thicknesses of face and core and frequency region into the CST software. According to the result of CST software, the theoretically optimum structure is obtained. In this paper, the theoretically optimum thicknesses of face and core are 0.5 mm and 15.6 mm. Then the A-type sandwich composite plate specimen is produced by vacuum bag molding process to test and verify the theoretically optimum structure. Further plate experimentation suggests that the experimental data agrees well with software test values. Therefore, the A-type PMI foam cored sandwich structure composite in this paper can meet the broadband penetration performance of a certain type of radome.

Key words: PMI foam sandwich composite, electrical performance, thickness of face, thickness of core, CST software

中图分类号:

TB332

单忠伟,边佳燕,程翔,刘钧. PMI泡沫夹层复合材料电性能设计与实验研究[J]. 玻璃钢/复合材料, 2016, 0(4): 82-87.

SHAN Zhong-wei, BIAN Jia-yan, CHENG Xiang, LIU Jun. ELECTRICAL PERFORMANCE DESIGN AND EXPERIMENTAL STUDY OFPMI FOAM CORED SANDWICH COMPOSITE[J]. Fiber Reinforced Plastics/Composites, 2016, 0(4): 82-87.

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