Preparation and Electromagnetic Properties of Carbonyl Iron Powders/Silver Core-shell Particles and Their Composite Rubber Materials

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (10): 1934.

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Preparation and Electromagnetic Properties of Carbonyl Iron Powders/Silver Core-shell Particles and Their Composite Rubber Materials

WANG Yi-Long1,2, LI Wei1, ZHANG Qiao-Xin1, WANG Wei1, GUAN Jian-Guo1*

1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,
2. Department of Chemistry, School of Sciences, Wuhan University of Technology, Wuhan 430070, China

Received:2010-03-03 Online:2010-10-10 Published:2010-10-10
Contact: GUAN Jian-Guo. E-mail: guanjg@whut.edu.cn
Supported by:
国家“八六三”计划项目(批准号: 2006AA03Z461)和国防基础科研项目(批准号: A1420080185)资助.

Abstract

Abstract: Carbonyl iron powders/silver core-shell composite particles were prepared by liquid chemical reduction technology. Using carbonyl iron powders/silver core-shell composite particles as shielding filler, a novel kind of wide-frequency and high-performance electromagnetic shielding rubber materials were prepared. The morphology and composition of electromagnetic shielding fillers were analyzed. The effect of electromagnetic properties of shielding fillers on shielding effectiveness of electromagnetic shielding rubber materials was investigated. The results show that carbonyl iron powders/silver composite particles with intact core-shell structure have excellent high electric conductivity and magnetic properties. The electromagnetic shielding rubbers based on carbonyl iron powders/silver core-shell composite particles have excellent electromagnetic shielding effectiveness due to strong absorbing loss and reflecting loss. Compared with traditional shielding rubbers, conductive magnetic electromagnetic shielding rubber materials show better shielding effectiveness.

Key words: Carbonyl iron powder/silver core-shell composite particle, Electromagnetic shielding, Complex permeability, Shielding effectiveness

TrendMD:

WANG Yi-Long, LI Wei, ZHANG Qiao-Xin, WANG Wei, GUAN Jian-Guo*. Preparation and Electromagnetic Properties of Carbonyl Iron Powders/Silver Core-shell Particles and Their Composite Rubber Materials[J]. Chem. J. Chinese Universities, 2010, 31(10): 1934.

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Preparation and Electromagnetic Properties of Carbonyl Iron Powders/Silver Core-shell Particles and Their Composite Rubber Materials

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