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Graphene Water Dispersion and Usage Areas

Since graphene was discovered in 2004, the study of graphene has never ceased. Graphene is a two-dimensional network carbon nanomaterial. The carbon atoms in graphene form a unique two-dimensional hexagonal honeycomb lattice structure by sp2 hybridization. This monatomic layer structure makes graphene the thinnest and strongest material in the world. Graphene also has excellent physical and chemical properties, such as mechanical properties, thermal properties, electrical properties, and optical properties. Therefore, graphene has a wider value and prospects for practical application compared with other members of the carbon nanomaterials family, namely zero-dimensional fullerenes and one-dimensional carbon nanotubes.
In recent years, graphene has often been combined with polymer materials, ceramic materials, and metal materials to prepare graphene-reinforced composites, which not only makes the physical and chemical properties of the composite materials be greatly improved, but also expands the application of graphene in the field of optoelectronic materials, biosensors, and catalysts. In some applications water dispersion of graphene is needed to use and gives better properties to the materials.
Now let’s look at where Graphene Water Dispersion can be used. Dispersions of graphene are advantageous for the use of graphene in numerous industrial applications, such as: use as additive or component of elastomeric compositions for tires. If graphene level is 1-1.5% in the dispersion many superior properties can be achieved like an improved gas barrier effect, with consequent increase of impermeability, causing the tire to deflate more slowly; improvement of the mechanical dynamic properties, in particular rolling resistance; increase of thermal conductivity, useful for heat dissipation; increase of electrical conductivity, useful for the dissipation of electrostatic energy.
If graphene water dispersions are used as additive or component of paints and silicon compositions, where graphene levels of 20-30% by weight, these properties can be obtained: increase of thermal conductivity for heat dissipation, increase of electrical conductivity, to reach conductive compounds; gas and liquid barrier effect with consequent increase of impermeability, to give anticorrosion and antifouling properties.
In textiles if graphene levels reach 40% in water dispersion good electrical conductivity for producing intelligent textiles, good thermal conductivity, liquid barrier effect, flame retardant properties and IR shielding can be obtained.
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