Coating for polyaspartic acid-glycidyl methacrylate composite urban cast copper sculpture and preparation method of coating

Abstract

The invention discloses a coating for a polyaspartic acid-glycidyl methacrylate composite urban cast copper sculpture. The coating is prepared from, by weight, 0.5-1 part of glycidyl methacrylate, 1-2 parts of tetraethoxysilane, 1-2 parts of gamma-glycidoxy propyl trimethoxy silane, 1-2 parts of methacrylic acid, 6-8 parts of epoxypropyl methacrylate, 0.5-1 part of octamethylcyclotetrasiloxane, 0.03-0.05 part of ammonium persulfate, 0.3-0.5 part of polyaspartic acid, 0.1-0.15 part of lauryl sodium sulfate and 0.1-0.2 part of sodium hexametaphosphate. By means of the coating, excellent corrosion resistance can be provided, good flexibility, adhesiveness and mechanical performance are further achieved, and meanwhile the coating further has the advantages of being high in hardness and luster, good in weather resistance and the like and is high in practical value.

Description

technical field [0001] The invention relates to the technical field of coatings for cast copper sculptures, in particular to a polyaspartic acid-glycidyl methacrylate composite coating for urban cast copper sculptures and a preparation method thereof. Background technique [0002] With the improvement of people's requirements for the quality of urban life, urban sculpture, as one of the specific and stylish carriers of urban culture, has received more and more attention. Urban sculpture is a sculpture in a public place in the city. In a city full of tall buildings and criss-crossed roads, it can relieve the congestion, congestion, rigidity and singleness caused by the concentration of buildings. The empty site plays a role of increasing balance, which not only beautifies the urban environment, but also reflects the urban culture and the spirit of the times. Among them, cast copper sculpture is an important part of urban sculpture culture and art. [0003] Copper casting ha...

AI Technical Summary

Problems solved by technology

However, cast copper has high requirements on the storage environment, and it is easy to oxidize and deteriorate in the outdoor environment for a long time, and it is difficult to maintain. Therefore, it is necessary to take certain measures to protect its surface.

The literature "Effect of TEOS content in mercapto-functional organosilicon sol-gel coating on copper alloy surface on its anticorrosion performance" protects copper by preparing organosilicon sol-gel coating on copper surface, and the corrosion resistance of the coating However, silicone sol-gel coatings have problems such as poor adhesion to copper, low degree of crosslinking, poor flexibility, easy cracking, and limited anti-corrosion effect, so they are not suitable for casting copper sculptures. for practical application