摘要
以铜粉、氧化铁、氧化钴等作为填料,高分子树脂作为黏结剂,制备导电导磁性复合涂料,研究其涂布后电磁屏蔽等相关性能。探讨导电导磁涂料配比、涂料的复配、单双面涂布、屏蔽层结构等对屏蔽和导电性能的影响。导电基体、导电涂层和导磁涂层的三层组合最佳。将与电磁波不同交互作用机制的导磁填料混合,将产生磁损耗优势互补,形成宽频高吸收。通过该法制备得到的多层涂布碳纤维纸,电磁屏蔽效能达到48dB(1.5GHz)。
Carbon fiber paper was coated with multiple layers coating composed by conductive and magnetic fillers.The electromagnetic shielding and conductive properties of the coating were investigated.e effluencing factors such as the ratio of conductive and magnetic fillers,the composition of magnetic fillers,the contrast of coating method,the structure of shielding layer were assessed according with effectiveness.e results showed the best component for the coating layer was：conductive substrate,conductive coating layer and magnetic coating layer sequently.The compound of magnetic fillers with differenet electromagnetic interaction mechanism would produce a complementary magnetic loss,and display a high absorption in broader frequency band.e shielding effectiveness of multi-layer coated carbon fiber paper at 1.5 GHz was shown up to 45 dB.
出处
《纸和造纸》
北大核心
2011年第3期23-26,共4页
Paper and Paper Making
关键词
电磁屏蔽
涂料
碳纤维纸
导电导磁
electromagnetic shielding
coatings
carbon fiber paper
conductive and magnetic
