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The authors have synthesized the thermally stable epoxy resin modified polymer composites such as polydiphenylamine, benzidine polyvinyl alcohol, styrene polymethyl methacrylate by in situ polymerization technique. To this, the materials were modified with triethylene tetramine as hardener to obtain highly cross-linked thermosetting resins in weight percentages with AR grade epoxy resin. Then the...
In recent days, various microwave absorbers are used for electromagnetic interference and compatibility measurements in anechoic and semi-anechoic chambers. The authors have synthesized three different polymer composites of epoxy resin modified by urea formaldehyde and silicon urea formaldehyde of different wt%. The samples were made as small films of specific dimension in order to test them in the...
Microwave absorber materials play a major role in electromagnetic interference and compatibility measurements in anechoic chambers. The authors have made efforts toward finding the reflection co-efficient of barium titanate (BaTiO3)/ epoxy resin composites and strontium Titanates (SrTiO3)/epoxy resin [1] were made as films with two different concentrations. The measurement was carried out by a transmission/reflection...
Design of multilayer microwave absorbers has become essential for effective absorption of microwave energy in the given range of frequencies due to the limitation of amount of energy that could be absorbed by a single layer absorber. There are various methods to design multilayer microwave absorbing materials. In this, multiple layers of dielectric materials are usually placed on top of conducting...
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