喻冬秀. 基于电磁参数的多层电磁波屏蔽涂料研究[J]. 云南大学学报(自然科学版), 2010, 32(4): 418-423 .
引用本文: 喻冬秀. 基于电磁参数的多层电磁波屏蔽涂料研究[J]. 云南大学学报(自然科学版), 2010, 32(4): 418-423 .
YU Dong-xiu. Study on the multi-layer electromagnetic shielding paint based on electromagnetic parameters[J]. Journal of Yunnan University: Natural Sciences Edition, 2010, 32(4): 418-423 .
Citation: YU Dong-xiu. Study on the multi-layer electromagnetic shielding paint based on electromagnetic parameters[J]. Journal of Yunnan University: Natural Sciences Edition, 2010, 32(4): 418-423 .

基于电磁参数的多层电磁波屏蔽涂料研究

Study on the multi-layer electromagnetic shielding paint based on electromagnetic parameters

  • 摘要: 在分析改性碳纤维和镍粉的复介电常数和复磁导率的基础上,进行复合电磁屏蔽涂层结构的设计,以实现频率小于1.5GHz的电磁波屏蔽效能的提高.制备了改性碳纤维/丙烯酸酯类树脂和镍粉/丙烯酸酯类树脂的电磁屏蔽涂料.实验表明:对填料基本电磁参数的分析能优化多层屏蔽涂层的设计,依据电磁参数来调整各层屏蔽涂料所用填料,可实现逐层阻抗匹配和提高屏蔽效能.在频率小于1.5GHz的低频区域,多层屏蔽涂层的最大电磁屏蔽效能可达30.5dB,相对单层屏蔽涂层,提高了5.31dB.

     

    Abstract: The structure of multi-layer shielding materials was designed based on the analysis of fillers' complex permittivity and complex permeability,in order to improve shielding effectiveness in frequency less than 1.5GHz .The electromagnetic parameters of modified short carbon fiber and modified nickel were measured.The multi-layer shielding paints based on modified carbon fibers and nickels were prepared.The results showed that the analysis of fillers' electromagnetic parameter redounded to optimize multilayer design.Impedance matching and higher SEmay be realized by adjusting fillers,using different layers,according to electromagnetic parameter.Compared with monolayer film,the SEmax of multi-layer films,reached to 30.5dB,increased about 5.31dBin frequency less than 1.5GHz.

     

/

返回文章
返回