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U.S.Patenting the invention of Dr. Roham Rafiee, an associate professor at in faculty of Advanced Sciences and Technologies and the head of the Composite Research Lab

U.S.Patenting the invention of Dr. Roham Rafiee, an associate professor at in faculty of Advanced Sciences and Technologies and the head of the Composite Research Lab


Title: NANOCOMPOSITE COATING FOR REFLECTOR ANTENNAE AND ITS SYNTHETIC APPROACHES

 

In this patent, the composition of a suitable coating nanocomposite and the synthetic methods for such on reflector antennae in satellite communication was developed. The mentioned coating approach leads to the electromagnetic conductivity in the antennae and can be used on composite antennae, which are insulators, but have lower weight, and are thus preferred to metal antennae. The coating was done using a nanocomposite polymer made of epoxy polymer resins, which do not possess electromagnetic conductivity, and nanographene particles, made of unfunctionalized graphene which do not require any chemical treatment. The novelty of this patent revolved around the attempt to successfully discover the appropriate ratio of graphene and the unique process of adding and distributing graphene inside the epoxy resins in order to achieve the desired conductivity. The suitable thickness of the coating in regard to the frequency band was also established. The main difference in the mentioned patent compared to previous methods is not only the use of unfunctionalized graphene compared to functionalized graphene or carbon nanotubes, but also employing insulator resins. The mechanism of adding graphene and the hardening substance to polymeric resins, and the distribution of graphene in two stages is the key innovative feature of this patent compared to previous proposed methods.

The mentioned strategy was patented with the support of the Iran National Science Foundation, within 14 months of the initial request.