Surface treatment method for glass flake in preparation of glass flake coating

Abstract

The invention relates to a surface treatment method for a glass flake in the preparation of a glass flake coating. The prepared glass flake coating relates to epoxy resin, talcum powder, thixotropic agent, titanium dioxide, pigment and the glass flake mixture, blending is carried in the preparation of the glass flake coating, wherein the glass flake mixture contains the glass flake and treating fluid, the treating fluid contains active diluting agent, coupling agent, flake directional arrangement agent and defoaming agent, the treating fluid used by per 100g of glass flake comprises the following ingredients by mass: 30.0-180.0g of active diluting agent, 0.6-12.0g of coupling agent, 0.6-12.0g of flake directional arrangement agent and 0.6-4.5g of defoaming agent. The surface treatment method has the characteristics of being short in time, and high in efficiency, the content of bubbles in the glass flake coating can be reduced, the formed coating film is parallel to a substrate metal, the diffusion path of a permeable medium can be prolonged, and the shielding property of the glass flake coating film can be improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a surface treatment method for glass flakes when preparing glass flake coatings. Background technique [0002] After the coating is formed into a film, the glass flake coating will form a multi-layer flake structure in the coating, that is, the glass flake structure. This structure can effectively prolong the diffusion path of the corrosive medium in the coating, thereby effectively delaying the corrosion of the base metal. Glass flake coatings have been more and more widely used in heavy-duty anti-corrosion fields such as ships, metallurgy, petrochemicals, and offshore platforms by taking advantage of the above characteristics. [0003] However, the hydrophilicity of glass flakes is poor, and the adhesion to epoxy resin is poor. If untreated glass flakes are directly used to prepare glass flake coatings, the effect of the coating shielding water vapor and corrosive media will b...

AI Technical Summary

Problems solved by technology

[0005] 1. The glass flakes are treated as a whole with epoxy resin mixed with a coupling agent, but the prepared glass flake coating will have an increase in water absorption during use, resulting in swelling and cracking of the coating within a short service period And desorption with the substrate and other phenomena, shortening the service life of the glass flake coating;

[0006] 2. The silane coupling agent is directly sprayed on the surface of the glass flakes for treatment, so that the surface treatment of the glass flakes is not uniform, which easily leads to uneven corrosion resistance of the coating, and local expansion, cracking and corrosion are prone to occur during the service period. failure phenomenon

[0007] In addition, the above method takes a long time to process the glass flakes, and the production efficiency is low

Images