Abstract
In recent years, there has been a great interest in the development and creation of new functional energy materials, including for improving the energy efficiency of power equipment and for effectively removing heat from energy devices, microelectronics and optoelectronics (power micro electronics, supercapacitors, cooling of processors, servers and data centers). In this paper, the technology of obtaining new nanocomposites based on mesoscopic microspheres, polymers and graphene flakes is considered. The methods of sequential production of functional materials from graphene flakes of different volumetric concentration using epoxy polymers, as well as the addition of monodisperse microspheres are described. Data are given on the measurement of the contact angle and thermal conductivity of these nanocomposites with respect to the creation of thermal interface materials for cooling devices of electronics, optoelectronics and power engineering.
Highlights
Graphene research has attracted increasing interest from researchers in physics, materials science, chemistry, etc
Graphene consists of an unusual single-layer honeycomb lattice of C atoms, which differs from all other materials of this element
Graphene flakes produced by Graphene Star Ltd were used to prepare a nanocolloid solution, for which graphene flakes of various volume were added to pure distilled water and stirring was conducted for 20-30 minutes in a rotating centrifuge
Summary
Graphene research has attracted increasing interest from researchers in physics, materials science, chemistry, etc. It has been demonstrated that graphene exhibits some special characteristics, such as a high electron mobility of up to 230 000 cm2/V·s at low temperatures, an exceptional thermal conductivity approaching 5000 W/m·K and superior mechanical properties with a large Young’s modulus, exceeding 1.0 TPa the latter being comparable to those of single-walled nanotubes and even diamonds. With these intriguing physical and chemical properties, it is not surprising that graphene has been intensively investigated to exploit its functions as a promising material for future applications
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