No abstract

The need of high performance integrated circuits and high power density communication devices drives the development of materials enhancing the conductive performances by carbon nanoparticles. Among nanocomposites, the ternary hybrid carbon nanotubes/graphene nanoplatelets/polymer composites represent a debatable route to enhance the transport performances.In this study hybrid ternary nanocomposites were manufactured by direct mixing of multiwalled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) at a fixed filler content (0.3 wt.%), but different relative combination, within an epoxy system. MWNT/epoxy nanocomposites were manufactured for comparison. The quality of dispersion was evaluated by optical and scanning electron microscopy (SEM). The electrical properties of hybrid composites were measured in the temperature range from 30 up to 300 K.The synergic combination of 1D/2D particles did not interfere with the percolative behaviour of MWCNTs but improved the overall electrical performances. The addition of a small amount of GNPs (0.05 wt.%) led to a strong increment of the sample conductivity over all the temperature range, compared to that of mono filler systems.

The nature-inspired theory of hydrophobic surface is an interdisciplinary subject which involves physics, chemistry, material science, and even biology. Nowadays with more developed equipment, we are able to fabricate man-made hydrophobic surfaces which have significant water-repellence and durability what will make this scientific direction maintaining and long-lasting. The present study covers a method of bringing high hydrophobicity to cotton/polyester fabric. Three different commercially available fluorine containing hydrophobic agents were applied to samples in different concentration and compared by physical properties. According to experimental results the sufficient concentration of agents is ascertained. Samples and recommendations for industrial testing are developed.

No abstract