Title of article :
Nano-scale and micron-scale manganese dioxide vs corresponding paraffin composites for electromagnetic interference shielding and microwave absorption
Author/Authors :
Song، نويسنده , , Wei-Li and Cao، نويسنده , , Mao-Sheng and Qiao، نويسنده , , Bei-Bei and Hou، نويسنده , , Zhi-Ling and Lu، نويسنده , , Ming-Ming and Wang، نويسنده , , Chan-Yuan and Yuan، نويسنده , , Jie and Liu، نويسنده , , Dong-Ni and Fan، نويسنده , , Li-Zhen، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
10
From page :
277
To page :
286
Abstract :
The hydrothermal method was utilized to synthesize beta-manganese dioxide (β-MnO2) nanorods. Both the neat bulk samples fabricated from the nano-scale β-MnO2 rods and commercial micron-scale β-MnO2 particles exhibited similar performance in permittivity, electromagnetic interference shielding and microwave absorption. The wax-based composites embedded with the as-prepared β-MnO2 nanorods exhibited greater differences in permittivity, electromagnetic interference shielding and microwave absorption, compared to those embedded with the commercial micron-scale MnO2 particles. The results suggest that neat MnO2 materials are effective in electromagnetic interference shielding and the composites with β-MnO2 nanorods present the highest microwave absorption. Electrical conductivity coupled with size effects was considered as the most significant roles in the variations of permittivity, electromagnetic interference shielding and microwave absorption. The related mechanism associated with reflection and absorption has been discussed. The results have provided potential strategies for designing and achieving high-performance electromagnetic interference shielding and microwave absorbing materials.
Keywords :
D. Dielectric properties , A. Nanostructures , D. Electrical properties , A. Composites , A. Oxides
Journal title :
Materials Research Bulletin
Serial Year :
2014
Journal title :
Materials Research Bulletin
Record number :
2105017
Link To Document :
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