Mildew-preventing antibacterial hydrophobic coating

Abstract

The invention discloses a mildew-preventing antibacterial hydrophobic coating and belongs to the technical field of coatings. According to the mildew-preventing antibacterial hydrophobic coating disclosed by the invention, a coarse surface shape can be formed on a substrate by adding polymeric particles, so that the hydrophobic property of the coating is greatly improved; and meanwhile, by taking nano-zinc oxide modified chitosan as an antibacterial agent, the mildew-preventing antibacterial hydrophobic coating disclosed by the invention has a good antibacterial effect and overcomes the defects that silver oxide which serves as the antibacterial agent is active in property, is easily oxidized in air to lead to discolor and is high in cost.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-mildew and anti-bacterial hydrophobic coating. Background technique [0002] At present, with the continuous improvement of people's daily life standards, people's requirements for the comfort of life are gradually increasing, and the requirements for coatings are more stringent, which makes their houses more beautiful. Wall coverings and wallpapers are popular for interior decoration. , but wall coverings and wallpapers have the following defects: First, they are not environmentally friendly. Wall coverings and wallpapers themselves contain benzene substances, which are harmful to the human body and affect human health. Before pasting ordinary wall coverings and wallpapers, the walls must be Apply an oily primer, and the oily primer contains solvents, additives, additive solvents, etc. These substances contain toluene and xylene, which will cause serious damage to the h...

AI Technical Summary

Problems solved by technology

[0002] At present, with the continuous improvement of people's daily life standards, people's requirements for the comfort of life are gradually increasing, and the requirements for coatings are more stringent, which makes their houses more beautiful. Wall coverings and wallpapers are popular for interior decoration. , but wall coverings and wallpapers have the following defects: First, they are not environmentally friendly. Wall coverings and wallpapers themselves contain benzene substances, which are harmful to the human body and affect human health. Before pasting ordinary wall coverings and wallpapers, the walls must be Apply an oily primer, and the oily primer contains solvents, additives, additive solvents, etc. These substances contain toluene and xylene, which will cause serious damage to the human respiratory tract. In addition, it must be used when pasting wall coverings and wallpapers. Wall cloth glue, wall cloth glue contains a lot of methanol, methanol is a toxic and volatile substance, and it is also very harmful to the human body. The second is not water resistant. Once the climate humidity is high and the environmental conditions are poor, the wall cloth and wallpaper will appear damp. As a result, mildew, peeling, and cracking will occur. The third is not resistant to dirt. Wall cloth and wallpaper are pasted on the wall by pasting.

[0004] At present, there are three main categories of antibacterial agents for coatings: natural antibacterial agents, organic antibacterial agents and inorganic antibacterial agents. Among them, nano-silver is the most prominent among inorganic antibacterial agents. Due to the surface effect, its antibacterial ability is 200 times that of micron-sized silver particles. Above, the antibacterial performance is also far greater than the traditional silver ion fungicides, but because of its active nature, it is easily oxidized in the air, causing discoloration, and its application is greatly limited. Therefore, there is an urgent need for a stable and good antibacterial agent. Effective anti-mildew and anti-bacterial coating

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