钢渣/木炭纳微复合物的制备与电磁特性  

Preparation and electromagnetic characteristics of steel slag/charcoal nano-/micro-composites

作　　者：童国秀[1] 袁进好[1] 华桥[1] 秦明月[1] 蔡建静[1] 官建国[2] 

机构地区：[1]浙江师范大学化学与生命科学学院,浙江金华321004 [2]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《功能材料》2011年第B04期287-291,共5页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA03A209);浙江省自然科学基金资助项目(Y4100022);浙江省新苗人才计划;金华市科技计划资助项目(2010A12066)

摘　　要：以钢渣、木炭为原料,采用高性能球磨工艺得到具有磁-电阻复合损耗的钢渣/木炭片状纳微复合物。并用EDS、XRD、SEM、网络矢量分析仪等表征手段研究了钢渣/木炭复合物的组成、物相、形貌以及电磁特性。结果表明,钢渣/木炭复合物的电磁特性对木炭的含量呈现强烈的依赖性。随木炭含量的增大,钢渣/木炭复合物的介电常数实部和虚部显著提高。当木炭含量为50%时,钢渣/木炭复合物因其高的介电损耗和优良的匹配特性而显示最佳的吸波性能,此时最大反射率值为-33.4dB,<-10和-20dB的有效带宽分别为15.2和8.6GHz。Using steel slag and charcoal as raw materials, the steel slag/charcoal nano-/micro-composites with magnetic-resistance mixed loss mode were fabricated by a high-performance milling process, and then the com position, phase structure, morphology, and electromagnetic （EM） characteristics of the products were characterized by XRD, EDS, SEM, and vector network analyzer, respectively. The results showed that EM characteristics of the products were strongly dependent on the content of the charcoal （Wch ）. The real and imaginary parts of the permittivity of the steel slag/charcoal nano-/micro-composites significantly increased with the increasing Wch 1. Among them, the steel slag/charcoal composites with Wch l = 50wt% exhibited the best EM-wave absorption performance, with a maximum reflectivity value of - 33. 4dB, the effective bandwidth 15.2GHz（〈-10dB） and 8.6 GHz （〈-20 dB）, respectively, which is a consequence of enhanced dielectric loss and a proper EM matching.

关 键 词：钢渣/木炭复合物 高性能球磨法 电磁性能 微波吸收性能 

分 类 号：TQ11[化学工程—无机化工] TQ17