PPT On Microwave absorption properties of Graphite flakes-Phenolic Resin Composite
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Microwave absorption properties of Graphite flakes-Phenolic Resin Composite Presentation Transcript:
1.Microwave absorption properties of Graphite flakes-Phenolic Resin Composite
2.The work focused on…
The compatibility of electronic devices with various electromagnetic environments has become an important issue in recent years with increasing use of gigahertz electromagnetic waves in wireless communications, satellite communications, radar systems, and military applications. This in turn increases the demands on electromagnetic interference shielding and electromagnetic wave absorbing materials in the GHz range.
3.Applications of microwave absorber
4.Challenges in developing radar absorbing material (RAM)
Consistent absorption over a range of frequencies (broad banding).
The reduction of dimension (as absorption is thickness dependent).
Durability, corrosion resistant and thermal stability.
Cost effective
5.Material Parameter influencing microwave absorption…
Parameter influencing materials behavior to microwaves:
6.Theory for microwave absorption…..
7.Experimental
Material selection:
Graphite Flakes(GF) as inclusions & Novolac Phenolic resin (NPR) as polymer matrix.
GF has light weight, low cost, good corrosion resistance and high thermal conductivity and stability.
NPR has good heat resistance, dimensional stability, flame & chemical resistance and cost effective.
8.Experimental
Composite sample of size 10.38 mm × 22.94mm × 3.7 mm is prepared by compression molding technique with varying the ratio of resin and fillers (7 and10 wt. %).
9.Microstructural characterization
X-Ray Diffraction and Scanning Electron Micrographs
10.Microwave characterization of GF-NPR composites
using Agilent 85071E material measurement software
Download
Microwave absorption properties of Graphite flakes-Phenolic Resin Composite Presentation Transcript:
1.Microwave absorption properties of Graphite flakes-Phenolic Resin Composite
2.The work focused on…
The compatibility of electronic devices with various electromagnetic environments has become an important issue in recent years with increasing use of gigahertz electromagnetic waves in wireless communications, satellite communications, radar systems, and military applications. This in turn increases the demands on electromagnetic interference shielding and electromagnetic wave absorbing materials in the GHz range.
3.Applications of microwave absorber
4.Challenges in developing radar absorbing material (RAM)
Consistent absorption over a range of frequencies (broad banding).
The reduction of dimension (as absorption is thickness dependent).
Durability, corrosion resistant and thermal stability.
Cost effective
5.Material Parameter influencing microwave absorption…
Parameter influencing materials behavior to microwaves:
6.Theory for microwave absorption…..
7.Experimental
Material selection:
Graphite Flakes(GF) as inclusions & Novolac Phenolic resin (NPR) as polymer matrix.
GF has light weight, low cost, good corrosion resistance and high thermal conductivity and stability.
NPR has good heat resistance, dimensional stability, flame & chemical resistance and cost effective.
8.Experimental
Composite sample of size 10.38 mm × 22.94mm × 3.7 mm is prepared by compression molding technique with varying the ratio of resin and fillers (7 and10 wt. %).
9.Microstructural characterization
X-Ray Diffraction and Scanning Electron Micrographs
10.Microwave characterization of GF-NPR composites
using Agilent 85071E material measurement software
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