Characteristics of Graphene Coatings

Today, Xiaobiao has prepared the characteristics of graphene coating for everyone. Customers who like it can bookmark it!

1. Graphene coatings have high corrosion resistance: By adding graphene to the coating and utilizing its large specific surface area (2630/g [1]), a uniform coverage is formed in the coating to protect the substrate; Meanwhile, through the two-dimensional layered structure of graphene, a "maze effect" can be generated in the coating, slowing down the penetration of moisture, ions, and oxygen, delaying the corrosion process, and achieving high anti-corrosion performance. The anti-corrosion performance of graphene epoxy anti-corrosion coatings is far superior to traditional epoxy anti-corrosion coatings. (The national standard for neutral salt spray resistance of conventional anti-corrosion coatings is 1000 hours, while graphene epoxy anti-corrosion coatings can reach more than 2400 hours)
2. Graphene coatings have high mechanical properties: By adding graphene to the coating and applying its high-strength properties (Young's modulus of 1tpa [2]), the hardness, impact strength, flexibility, and other mechanical properties of the paint film can be effectively improved.
3. Graphene coatings have high wear resistance: By adding graphene to the coating, the mechanical properties of graphene can be improved, resulting in high wear resistance
4. Graphene coatings have weather resistance: Ordinary epoxy anti-corrosion coatings used as primers do not have UV resistance and need to be covered with weather resistant topcoats on top of the primer to prevent the epoxy resin from powdering by UV light, which can cause the paint film to crack and peel off. By adding graphene to epoxy anti-corrosion coatings and utilizing its inherent UV resistance, weather resistance can be achieved. Therefore, in application scenarios with lower aesthetic requirements, topcoat may not be used.
5. Graphene coatings are environmentally friendly: Ordinary epoxy anti-corrosion coatings require the addition of a large amount of zinc powder, which can provide cathodic protection for the substrate and achieve anti-corrosion and rust prevention effects. However, the consumption process of the coating can cause zinc powder pollution to the application environment. The addition of graphene (especially graphene prepared by physical methods) can effectively reduce or even eliminate the addition of zinc powder, exceeding the original anti-corrosion performance and reducing environmental pollution.