Application of easy-to-clean acrylic finish paint in refrigerated container

Abstract

The invention discloses an application of easy-to-clean acrylic finish paint in a refrigerated container, wherein the easy-to-clean acrylic finish paint is prepared from 40-60 parts of a polyurethane modified acrylic emulsion, 0.1-1 part of a silane coupling agent, 0.1-1 part of fumed silica, 0.1-2 parts of a wetting agent, 0.2-3 parts of a defoaming agent, 0.1-1 part of a mildew preventive and other raw materials through the steps of mixing, stirring and the like, and the preparation process is simple. According to the easy-to-clean acrylic finish paint provided by the invention, the waterborne polyurethane modified acrylic emulsion is adopted to improve acrylic resin commonly used in the prior art, so that the cold brittleness and hot viscosity characteristics of the acrylic resin are overcome, and meanwhile, the stain resistance of the finish paint is also improved; and meanwhile, the prepared finish paint can play a good role when being matched with common seal primer and intermediate coat, a coating film is thin in thickness, a coating layer system is resistant to acid, alkali, salt mist and pollution, good in color and luster, low in color difference and the like, other related use performance indexes are met on the basis that the characteristic of easy cleaning is guaranteed, and the finish paint has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to the application of an easy-to-clean acrylic topcoat in refrigerated containers. Background technique [0002] A container is a group tool that can be loaded with packaged or unpackaged goods for transportation, and is convenient for loading and unloading with mechanical equipment. At present, containers are playing an increasingly important role in global trade and modern logistics, and can be transported by any means of sea and land. Container transportation usually exposes the container to the natural environment and withstands harsh climatic conditions, such as high temperature, high humidity, wind and sun, etc. Therefore, the paint used for containers has higher performance requirements than the paint used for ship hulls and general structural steel, and the aging of the paint film on the box body is required to be 3 to 5 years. [0003] Refrigerated container ...

AI Technical Summary

Problems solved by technology

Compared with the use of ordinary containers, when the refrigerated container is transported, the ordinary paint coating cannot effectively prevent the heat from entering the refrigerated container, which reduces the refrigerated effect of the container and affects the refrigerated items.

[0004] In the prior art, more attention has been paid to the anti-corrosion and cold storage properties of the coating film of refrigerated containers (see patent documents CN111748259A, CN111548703A, etc.), and there is not much attention to whether the outer surface of refrigerated containers is easy to clean

In fact, whether refrigerated containers are stored in the yard or during transportation, they will be exposed to wind and rain, and the outer surface is very easy to get dirty, which affects the secondary sales of refrigerated containers and also affects the appearance.

At present, there have been many studies on the coating film using acrylic emulsion as the main film-forming material in refrigerated containers, but it has obvious shortcomings: such as easy to be cold and brittle, hot and sticky, and easy to be polluted by rainwater and air pollutants to form rain marks Affect the appearance, causing more complaints from customers

In addition, the topcoats currently used in special boxes are mainly solvent-based acrylic topcoats, which still have the disadvantage of high VOC content (usually greater than 500g / L)

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