About the Graphene Nanoplatelets

Graphene nanoplatelets (GNPs) represent a new class of carbon nanoparticles/nanopowder with multifunctional properties. Graphene nanoplatelets are unique nanoparticles/nanopowder consisting of small stacks of graphene sheets having a platelet shape that are identical to those found in the walls of carbon nanotubes, but in a planar form. Graphene nanoplatelets can replace carbon fiber, carbon nanotubes, nano-clays, or other compounds in many composite applications. Graphene nanoplatelets unique size and platelet morphology makes these particles especially effective at providing barrier properties, while their pure graphitic composition makes them excellent electrical and thermal conductors. Graphene nanoplatelets can improve mechanical properties such as stiffness, strength, and surface hardness of the matrix material.

When graphene nanoplatelets are added at 2-5wt% to plastics or resins they make these materials electrically or thermally conductive and less permeable to gasses. Graphene nanoplatelets have naturally occurring functional groups like ethers, carboxyls, or hydroxyls that can react with atmospheric humidity to form acids or other compounds. These functional groups are present on the edges of the particles and their wt% varies with particle size. Hydrogen or covalent bonding capability can be added through functionalization at sites on the edges of the platelets. The unique manufacturing processes are non-oxidizing, so material has a pristine graphitic surface of sp2 carbon molecules.

The multifunctional property improvements offered by graphene nanoplatelets make them ideal additives for applications where several property improvements are required. Significant processing or material cost savings can be achieved by reducing or eliminating the need for multiple films or expensive lamination processes.

Achieve effective electrical conductivity with improved stiffness and toughness in cost-sensitive applications
Improve the cross-fiber electrical conductivity and ESD and thermal conductivity of carbon-fiber composites
Produce lower cost nanotube-containing conductive polymers with improved barrier properties
Render fiberglass electrically conductive without requiring any changes in processing or fabrication procedures
Improve barrier properties while also enhancing stiffness, strength, and scratch-resistance without reducing toughness
Impart inherent electrical conductivity for dissipation of static electricity and excellent barrier protection for use in applications involving flammable gases or liquids.

Applications of Graphene Nanoplatelets:

Graphene Nanoplatelets are used in ultra-capacitor electrodes.

Graphene Nanoplatelets are used in anode materials for lithium-ion batteries.

Graphene Nanoplatelets are used in conductive additive for battery electrodes.

Graphene Nanoplatelets are used in electrically conductive inks.

Graphene Nanoplatelets are used in thermally conductive films and coatings.

Graphene Nanoplatelets are used as an additive for lightweight composites.

Graphene Nanoplatelets are used in films or coatings for EMI shielding.

Graphene Nanoplatelets are used in substrate for chemical and biochemical sensors.

Graphene Nanoplatelets are used in barrier material for packaging.

Graphene Nanoplatelets are used as an additive for super-strong concrete and metal-matrix composites.

Carbon Nanotube Threads

Since its discovery, carbon nanotube (CNT) has attracted many interests in different technology fields due to its extraordinary properties. Properties such as, high strength, great electrical and thermal conductivity, light weight and flexibility made CNT one of the best materials for wide range of applications. However, from its name it can be understood that CNT is a nanoscale material which is very small to be applied for the production of daily products. Researchers all around the world are working on finding methods and techniques which could produce new materials with the extraordinary properties of CNT. Image retrieved from: https://worldindustrialreporter.com/strong-light-flexible-carbon-nanotubes-threads-with-ultrahigh-conductivity/ One of these research is focusing on the production of high strength threads that can be used in the manufacturing of fabrics, cables and ropes. An international group of scientists were able to produce a flexible conductive thread that i

Multi Walled Carbon Nanotube Dispersions

Carbon nanotubes (CNTs) have attracted enormous attention in recent years due to its unique physical, electronic, optical and potential applications in materials science and nanotechnology. The van der Waals interaction between tubes, however, makes CNTs aggregate in most organic solvents and aqueous solutions, which is the major limitation of their practical applications.Various approaches have been studied to alter the CNT surface to promote the dispersion of individual nanotubes and prevent their reaggregation. On the basis of this widely accepted viewpoint, numerous techniques such as covalent bonding, surfactant coating and polymer wrapping have been developed for surface modification or sidewall functionalization.These methods, however, are complicated, time-consuming and cause permanent damage to the CNT structure and properties of the surface, which produces residues of the dispersion agent for the final product. Figure: Single Walled Carbon Nanotube (SWCNT) It has re

Magnesium Oxide Nanoparticles/Nanopowder and Applications

General Information about Magnesium Oxide Magnesium oxide which has the chemical formula of MgO, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of Magnesium. It is a white powder at room temperature. Magnesium Oxide has very high melting point (2825 o C) and boiling point (3600 o C). Magnesium Oxide Nanoparticles/Nanopowder and Usage Areas Magnesium Oxide nanoparticles/nanopowder can be used in many different areas. For example Magnesium Oxide nanoparticles/nanopowder are used as a fire retardant for chemical fiber and plastics trades. For making crucible, smelter, insulated conduit, electrode bar, and electrode sheet Magnesium Oxide Nanoparticles/Nanopowder can be used as electric insulating material. Magnesium Oxide nan

Nanografi Nanotechnology

Search This Blog