超细镍粉复合材料的微波电磁特性研究  

Microwave Electromagnetic Characters of Composites Containing Ultrafine Ni Particles

作　　者：龚春红[1,2] 姚莉[3] 张玉[2] 杜陈强[2] 

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南大学特种功能材料教育部重点实验室,河南开封475004 [3]河南大学计算机与信息工程学院,河南开封475004

出　　处：《化学研究》2009年第3期83-87,共5页Chemical Research

基　　金：科技部973项目(2007CB607606);河南大学校内基金项目(07YBZR005)

摘　　要：以蒸馏水为溶剂,利用快捷、温和的液相还原法制备超细镍粉,将得到的超细镍粉作为填料制备了复合材料,考察了复合材料的电磁屏蔽和吸波性能.结果表明,超细镍粉质量分数为80%的树脂基复合材料在130MHz^1.5 GHz测试频段范围内的电磁屏蔽性能高于45 dB;而厚度为2 mm的超细镍粉/石蜡复合材料在7 GHz附近的反射率可达-27 dB.Uhrafine Ni panicles were synthesized via a facile and mild chemical route in distilled water. The resulting ultrafine Ni panicles were used as a kind of conductive fillers to fabricate conductive composites. The results indicated that the resin-based conductive composite containing 80 % of the ultrafine Ni particles recorded a shielding effectiveness （SE） value as much as above 45 dB within a frequency range of 130 MHz to 1.5 GHz, while the uhrafine Ni particles/wax composite with a thickness of 2 mm had a reflection loss R of - 27 dB at about 7 GHz.

关 键 词：超细镍粉 电磁屏蔽性能 吸波性能 

分 类 号：O614.81[理学—无机化学]