阻燃型镀镍碳纤维复合材料的高功率微波防护性能研究

HPM Shielding Effectiveness of the Fire Retarded Nickel-Plated Carbon Fiber Composites

主要研究了碳纤维表面化学镀镍工艺,并利用扫描电子显微镜(SEM),X射线衍射仪(XRD)分析了纤维的微观形貌、镍层成分和镍层结构。并与经过阻燃改性的环氧树脂基体复合制备了具有良好阻燃性能的电磁防护复合材料。在场强大于20 kV/m的环境下测试了复合材料在频率为1.3 GHz,2.8 GHz,4.3 GHz,9.4 GHz四个不同波段内频点的高功率微波电磁脉冲屏蔽效能。结果表明复合材料的高功率微波电磁脉冲屏蔽效能均大于60 dB,其中2.8 GHz下出现最大值90 dB。

The continuous carbon fiber chemical nickle-coating process is researched in this paper. By means of SEM and XRD, the micro surface of the fiber, the nickle component and the structure of the nickle-plating can be watched. The electromagnetic shielding composite materials are made of epoxy resin with fire retarding process and the nickle-coated carbon fiber, the fire retarding characters of the composite materials is excellent. The HPM electromagnetic shielding efficiency are tested, the test results show that the shielding efficiency of the composite materials is more than 60 dB (the typical four frequency spots: 1.3 GHz, 2.8 GHz, 4.3 GHz, 9.4 GHz) and the highest result is under the frequency 2.8 GHz.