合成纤维复合夹层屏蔽结构改性及其电磁特性研究  

MODIFICATION OF COMPOSITE INTERLAYER SHIELDING STRUCTURE ON SYNTHETIC FIBRE AND STUDY OF ITS ELECTROMAGNETIC CHARACTERISTIC

作　　者：张晓宁[1] 王群[1] 葛凯勇[1] 毛倩瑾[1] 周美玲[1] 

机构地区：[1]北京工业大学新型功能材料教育部重点实验室,北京100022

出　　处：《复合材料学报》2003年第1期85-90,共6页Acta Materiae Compositae Sinica

基　　金：北京市自然科学基金重点资助项目(2991001)

摘　　要：　提出具有复合介质夹层屏蔽结构模型的设想,利用铜箔-聚四氟乙烯为原材料,设计了单层屏蔽结构与复合夹层屏蔽结构的对比实验,测试了复合夹层屏蔽结构的电磁屏蔽效能增量,并用Ватолцн多层电磁屏蔽理论公式进行了验证。具有复合夹层屏蔽结构材料的电磁屏蔽效能明显优于单层屏蔽结构材料的电磁屏蔽效能。继而以涤纶无纺布、锦纶合成纤维为研究对象,采用电化学改性的方法,制备了具有复合夹层屏蔽结构的柔性电磁屏蔽材料。结果表明,通过对研究对象的选择和优化电化学改性的工艺,可以制备出1MHz～1000MHz入射电磁波频段范围内,满足不同要求的合成纤维复合夹层屏蔽结构改性材料,其SE值最高可达98dB。A physics model possessed of medium interlayer composite shielding structure was proposed. The contrast experiments of monolayer shielding structure and composite interlayer shielding structure were designed and carried out. The ΔSE, the abbreviation for electromagnetic shielding effectiveness increments, of composite interiayer shielding structure was measured, while it was confirmed by multilayer electromagnetic shielding theory formulas. The electromagnetic shielding effectiveness of the composite interlayer shielding structure materials is obviously superior to that of the monolayer shielding structure materials. The preparation of the supple electromagnetic shielding materials possessed of composite interlayer shielding structure was performed by the method of electrochemical modification. Terylene non-woven and polytetrafluoroethylene were selected as research objects. The results show that the composite interlayer shielding structure-modified materials on synthetic fibre can be prepared by means of selecting objects and optimizing techniques of electrochemical modification, which includes selecting different metallic plating layers, adjusting the impulse electroplate parameters, plating time, temperature and pH. Within the incident frequency range from 1 MHz to 1000 MHz, this kind of modified synthetic fibre can meet different demands, and the maximum SE is up to 98 dB. Not only is the composite interlayer shielding structure obtained, but also synthetic fibre materials are endowed with new electromagnetic characteristics by way of the process of metallic modification.

关 键 词：合成纤维 复合夹层屏蔽结构 改性 电磁屏蔽效能 复合材料 电化学 

分 类 号：TB33[一般工业技术—材料科学与工程]