Paper Information

Journal:   JOURNAL OF NEW MATERIALS   SUMMER 2015 , Volume 5 , Number 4 (20); Page(s) 75 To 84.
 
Paper: 

INVESTIGATION OF ELECTROMAGNETIC INTERFERENCE SHIELDING EFFECTIVENESS OF EPOXY-GRAPHENE NANOCOMPOSITES

 
 
Author(s):  EQRA R., JANGHORBAN K.*, MANESH H.D., ABIRI H.A.
 
* DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING, ENGINEERING SCHOOL, SHIRAZ UNIVERSITY
 
Abstract: 

Electromagnetic interference occurs when electronic equipment and devices are subjected to electromagnetic radiation from unwanted sources at high intensity in the working frequency ranges of these devices. Interference interrupts and degrades the effective performance of these equipments. Electromagnetic interference shielding is the process of reaching sufficient attenuation level of the waveseither by reflection or absorption respectively at the surface and in the body of the shielding materials. In this study, the shielding effectiveness of epoxy-graphene nanoeomposites was. investigated. Graphene was first synthesized and charaeterized and graphene-epoxy nanocomposite samples upto 3wt% grapheme were fabricated by casting method. Then shielding effectiveness of samples in the 8 to 12GHz (X band) was investigated. Results showed the electromagnetic interference shielding ability of these nanocomposites such that shielding effectiveness of 22.3 and 17.6dB at 12 and 8GHz was attained respectively for 3wt% graphene sample. The dominant mechanism of shielding in the range of graphene composition and test frequencieswas absorption so that the 3wt% graphene sample showed 89.7 and 81.8 percent at 12 and 8GHz respectively. This result indicated that these nanocomposites were appropriate candidates for absorbing electromagnetic waves.

 
Keyword(s): EPOXY, GRAPHENE, NANOCOMPOSITE, ELECTROMAGNETIC INTERFERENCE SHIELDING, SHIELDING EFFECTIVENESS
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 40
 
Latest on Blog
Enter SID Blog