Preparation and coating method of anti-corrosive anti-scale coating material

Abstract

The invention discloses a preparation and coating method of an anti-corrosive anti-scale coating material. The method comprises the steps that polytef emulsion is mixed with same amount of absolute ethyl alcohol, and stirred liquid is added into mixed sol obtained by mixing prepared graphene dispersion liquid and titanium dioxide colloid; the coating material is obtained after high-speed stirring is conducted. A metal substrate is coated with the coating material, and a composite nano coating modified metal sheet is obtained after high-temperature sintering, cooling, temperature conservation and drying are sequentially conducted. The preparation and coating method of the anti-corrosive anti-scale coating material has the advantages that the coating material is used for corrosion and scaling prevention of the surface of metal heat exchange equipment, and the defects that a pure polytef coating is prone to creep deformation, poor in heat conductivity and poor in abrasive resistance are significantly improved. By means of introduction of graphene and titanium dioxide composite nano materials, the surface energy of polytef is decreased, the cold flow property and the heat transfer property of the polytef are significantly improved, the anti-fouling performance of the coating is improved, the abrasion resistance of the polytef is significantly improved, the mechanical properties of a composite coating are enhanced, the service life of the coating is prolonged, and the coating material is widely applied to various water-medium heat-exchange equipment.

Description

technical field [0001] The invention relates to a metal anti-corrosion and anti-fouling coating, in particular to a preparation and coating method of a corrosion-resistant and anti-scaling composite nano-coating material. Background technique [0002] Water is a commonly used heat exchange medium. However, the water quality of heat exchange is often complicated, which is easy to cause corrosion and scaling of heat exchange equipment, thereby reducing the efficiency of the equipment, and even destroying the heat exchange equipment. In order to solve the corrosion problem, the titanium plate is used as a heat exchanger plate, which can effectively solve the corrosion problem and provide a long service life of the equipment, but the cost is high, and it cannot prevent scale. It needs to be cleaned regularly, and the production and maintenance costs are high. Chemical methods such as adding chemical scale inhibitors and physical methods such as mechanical cleaning can effectivel...

AI Technical Summary

Problems solved by technology

[0002] Water is a commonly used heat exchange medium. However, the water quality of heat exchange is often complicated, which is easy to cause corrosion and scaling of heat exchange equipment, thereby reducing the efficiency of the equipment, and even destroying the heat exchange equipment.

In order to solve the corrosion problem, the titanium plate is used as a heat exchanger plate, which can effectively solve the corrosion problem and provide a long service life for the equipment, but the cost is high, and it cannot prevent scale. It needs to be cleaned regularly, and the production and maintenance costs are high.

Adding chemical methods such as chemical antiscalants and physical methods such as mechanical cleaning can effectively prevent and eliminate fouling problems, but these methods generally have problems such as high cleaning costs or secondary pollution