金属化纤维电磁防护复合材料电磁仿真及性能研究

Research on the Matal-Coated Carbon Fiber Electromagnetic Shielding Composites Simulation and Performance

摘要: 本文以镀镍碳纤维作为主要增强材料，利用TexGen软件进行织物多维结构建模；采用时域有限积分法(FITD)仿真电磁波在织物结构中的传播效应，对金属化纤维电磁防护复合材料的屏蔽效能进行了电磁仿真。用热压罐成型工艺制备了一类金属化纤维电磁防护复合材料，对该材料的屏蔽效能(频段：30 MHz~10 GHz)进行了实测。对仿真结果和实测结果进行分析对比，发现两者较为吻合，表明该电磁仿真技术可以有效地对电磁防护复合材料的电磁屏蔽性能进行预判。

Abstract: The electromagnetic shielding composites are composed of the nickel-coated carbon fibers as the main enforced material of electromagnetic shielding effect. The multidimentional modeling of the fabric composite was done in TexGen. The shielding effectiveness of the composites was calculated by electromagnetic simulation FITD method which can simulate the propagating effect of electromagnetic waves. The shielding composites were prepared under autoclave process. The result of shielding effectiveness of the composite under frequency range from 30 MHz to 10 GHz was obtained by real test. By comparing the shielding effectiveness simulation and real test result, the conclusion is that the simulation result fits the real test results well and the electromagnetic simulation of metal-coated fiber composite can predict the effectiveness efficiently.