基于镀镍碳纤维的低频电磁防护材料制备及性能研究

Preparation of Low Frequency Electromagnetic Protection Material Based on Nickel-Plated Carbon Fiber and Performance Studies

摘要: 论文采用化学镀的方式在碳纤维表面沉积了一层金属镍层，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。然后将镀镍碳纤维进行单向编织，并以该镀镍单向纤维布作为其中的铺层制备了具有良好低频电磁屏蔽性能的复合材料。通过对该材料150 kHz~18 GHz下的电磁屏蔽效能考核，结果表明复合材料的屏蔽效能在150 kHz~30 MHz下屏蔽效能大于35 dB，30 MHz~18 GHz下屏蔽效能大于60 dB。

Abstract: Based on the fiber chemical nickel-plating coating process, the nickel-plating layers are coated on the fiber surface. The microstructure of the carbon fiber was observed by SEM method, and the component and the structure of the nickel-plating layers were analyzed by the XRD method. The composite material which was made of the nickel-coated unidirectional knitted carbon fibers was manufactured and had brilliant performance on the low frequency electro-magnetic shielding ef-fectiveness. By electro-magnetic shielding effectiveness test (150 kHz - 18 GHz), the results showed that electro-magnetic shielding effectiveness under the range between 150 kHz to 30 MHz is above 35 dB and under the range between 30 MHz to 18 GHz, is above 60 dB.