NDLI: Microwave absorbing polymer composites

Content Provider	IEEE Xplore Digital Library
Author	Murugan, M. Kokate, V.K.
Copyright Year	2009
Description	Author affiliation: Department of E & TC Engineering, College of Engineering, PUNE-5, India (Kokate, V.K.) \|\| Department of E & TC Engineering, Vishwakarma Institute of Information Technology, PUNE-48, India (Murugan, M.)
Abstract	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 reflection characteristics of these polymer composites, made as thin slabs was carried out by a transmission/ reflection method using a vector network analyzer R&S ZVA40, in the X and Ku-bands [8.0 to 18.0 GHz]. The microwave reflectivity properties of all these three blends were evaluated, and the epoxy modified styrene polymethyl methacrylate is found to be remarkably high upto − 50.2 dB at 14.1 GHz. The reflectivity of −10 dB or less could be obtained for a range of 7.4 GHz for the epoxy modified polydiphenylamine. The response slightly varies for all three samples. After due comparison of their response, epoxy modified polydiphenylamine and benzidine polyvinyl alcohol are deemed to be suitable as microwave absorber in the X and styrene polymethyl methacrylate is suitable in the Ku-band. The morphological features of the composites were examined using xray powder diffratogram and scanning electron microscopy.
Starting Page	336
Ending Page	339
File Size	813885
Page Count	4
File Format	PDF
ISBN	9781424448463
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-22
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scanning electron microscopy Transmission line matrix methods Microwave absorbers Epoxy resin Electromagnetic compatibility Reflection Conducting materials Chemicals Reflectivity Ferrites Polymer composites Anechoic chamber Electromagnetic interference Epoxy resins Microwave devices Polymers
Content Type	Text
Resource Type	Article

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