Anti-sticking coating

Abstract

The invention discloses an anti-sticking coating. The anti-sticking coating comprises a bottom layer and a surface layer, wherein the bottom layer is used for binding a blank piece with the surface layer and positioned between the surface of the blank piece and the surface layer, the surface layer is positioned on the bottom layer, the surface layer comprises a powder matrix and a hard phase mixed in the powder matrix, the power matrix mainly comprises ferrum, nickel and chromium; and the hard phase comprises tungsten carbide, chromium carbide and the like. The anti-sticking coating adopts a structure that the coating is formed by combining the powder matrix taking ferrum, nickel and chromium as main substances and manganese, molybdenum, boron, silicon and cobalt as secondary substances, with the hard phase of large particle ceramic or metal ceramic such as tungsten carbide, chromium carbide with the size of larger than 5mu m, so that the surface free energy on the surface of the coating and the surface tension of the coating can be obviously reduced, the compatibility of plastic or other macromolecular material blank pieces with the coating can be reduced, the sticking possibility of the two can be greatly decreased, in addition, the coating can keep higher hardness at a high temperature, and overcome the defects that paint of Telfon and the like is not wear-resistant and easy to deform at a high temperature.

Description

technical field [0001] The invention relates to an anti-adhesive coating, in particular to an anti-adhesive coating prepared on a blank made of plastic or high molecular polymer. Background technique [0002] During the processing of the blanks composed of plastic or high molecular polymers to form final objects such as roller bodies, due to the strong adsorption and active reactive groups of general polymers, especially polyurethane, epoxy, etc. Materials such as resins are prone to physical and chemical reactions with the metal surface, which not only affects the apparent quality of the product, increases the complexity of processing, but also has a considerable impact on the internal quality of the product. RTV silicone rubber, polyethylene, surfactants, silicone oil, aliphatic oil, etc. are used in scientific research and production. Although the above materials can solve some problems, the problem is that they have single functions and cannot meet the needs of various p...

AI Technical Summary

Problems solved by technology

[0002] During the processing of the blanks composed of plastic or high molecular polymers to form final objects such as roller bodies, due to the strong adsorption and active reactive groups of general polymers, especially polyurethane, epoxy, etc. Materials such as resins are prone to physical and chemical reactions with the metal surface, which not only affects the apparent quality of the product, increases the complexity of processing, but also has a considerable impact on the internal quality of the product.

RTV silicone rubber, polyethylene, surfactants, silicone oil, aliphatic oil, etc. are used in scientific research and production. Although the above materials can solve some problems, the problem is that they have single functions and cannot meet the needs of various polymers and polymers. Processing under various temperatures, the efficiency is low, and the coating must be applied once after one use, which cannot be used for many times and for a long time

Teflon and other coatings are used. Due to temperature limitations, Teflon itself is easy to deform and not wear-resistant at high temperatures, which also limits its scope of application.

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