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2020

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The structural composition of graphene coatings


Graphene anti-corrosion paint, also known as graphene coating, may seem unfamiliar to outsiders, but in the industry, the emergence of graphene coating has brought a considerable shock! It is known as one of the major discoveries of the 21st century.

When was it discovered that graphene could be used to produce graphene coatings?

The common graphite is formed by stacking layers of planar carbon atoms arranged in a honeycomb like order. The interlayer forces of graphite are weak, making it easy to peel off from each other and form thin graphite sheets. After peeling the graphite sheet into a single layer, this single layer with only one carbon atom thickness is graphene. Due to its extremely high hardness, it can be said to be several times harder than diamond, and it is also super porous, making it particularly suitable for making anti-corrosion paint coatings. Therefore, some scientists have begun to study whether it can be improved to better serve the public. The ideal graphene structure is a flat hexagonal lattice, which can be seen as a layer of stripped graphite molecules, with each carbon atom being sp2 hybridized and contributing electrons from the remaining p orbital to form a large π bond. π electrons can move freely, giving graphene good conductivity. The two-dimensional graphene structure can be seen as the fundamental building block for the formation of all sp2 hybrid carbonaceous materials.