Preparation process of copper-based nano antibacterial coating

Abstract

The invention discloses a preparation process of a copper-based nano antibacterial coating, aiming at solving the problems that the traditional antibacterial coating has no complete inhibition and decomposition effect on mould due to factors such as simplification of a production process and the like, musty odor is difficult to thoroughly remove, and residual mould spores cause health problems and the like. The reason is that the self morphological structure of the antibacterial material is not uniformly distributed in the coating, and the oxidation degree is insufficient, so that the self bactericidal performance is influenced. According to the invention, a binary homogeneous high-pressure jet crushing and mixing preparation process is adopted, and the particle size of the copper-based nano-antibacterial material is below 300nm after the copper-based nano-antibacterial material is crushed and prepared by a homogeneous high-pressure jet collision process, so that the copper-based nano-antibacterial material is densely and uniformly distributed in the coating, and the effects of fully purifying formaldehyde and thoroughly inhibiting mould are achieved.

Description

Technical Field

[0001] The present invention relates to the field of preparation of antibacterial materials, and particularly to a preparation process of a copper-based nano antibacterial coating. Background Art

[0002] Due to factors such as the simplification of the production process of traditional antibacterial coatings, they do not completely inhibit and decompose molds, the musty smell is difficult to completely remove, and residual mold spores cause health problems, etc. The reason is that the self-morphology structure of the antibacterial material is not evenly distributed in the coating and the degree of oxidation is insufficient, which affects its own bactericidal performance. The copper-based nano material adopted in the present invention is an inorganic antibacterial material, and a homogeneous jet impact pulverization preparation process is adopted, so as to realize the dense and uniform distribution of the copper-based nano antibacterial material in the coating, so as to achieve the inactivation of cells through processes such as contact disinfection, oxidation induction, and full release of copper ions, induce cells to lose necessary nutrients and water, and until atrophy, to solve the technical problems of fully purifying formaldehyde and completely inhibiting molds. Summary of the Invention

[0003] Aiming at the above-mentioned existing technical problems, the purpose of the present invention is to provide a preparation process of a copper-based nano antibacterial coating to solve the problems raised in the background art. To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a preparation process of a copper-based nano antibacterial coating. This process adopts a binary homogeneous mixing preparation process, and the copper-based nano antibacterial material is prepared by the high-pressure jet impact pulverization process of a homogenizer, so as to achieve the dense and uniform distribution of the copper-based nano antibacterial material in the coating. Preferably, for the preparation of the copper-based nano antibacterial material by the high-pressure jet impact pulverization process of a homogenizer, the process principle is to add the copper-based nano antibacterial material powder into a certain proportion of water and emulsion, and through the high-pressure jet of the homogenizer, it is impacted and pulverized by the diamond homogenization cavity inside the homogenizer to obtain a copper-based nano antibacterial material emulsion mixture. Preferably, for the preparation of the copper-based nano antibacterial material by the high-pressure jet impact pulverization process of a homogenizer, the prepared nano-scale size is less than 300 nm, so that it can better penetrate into bacteria and improve the antibacterial effect. Preferably, for the preparation of the copper-based nano antibacterial material by the high-pressure jet impact pulverization process of a homogenizer, the process includes the synchronous completion of the high-pressure homogenizer high-pressure jet impact pulverization process and the material dispersion process. Preferably, for the preparation of the copper-based nano antibacterial material by the high-pressure jet impact pulverization process of a homogenizer, the concentration of the copper-based nano antibacterial material powder used in the preparation of the copper-based nano antibacterial material emulsion mixture is equal to or greater than 0.5%. Preferably, in the preparation process of a copper-based nano antibacterial coating, in the coating preparation, the ratio of the copper-based nano antibacterial material powder to titanium dioxide is that for every kilogram of titanium dioxide, the added copper-based nano antibacterial material powder is greater than or equal to 5 grams, and the particle size of the copper-based nano antibacterial material powder is equal to or less than 500 nm. The beneficial effects of the present invention are as follows: The copper-based nano material adopted is an inorganic antibacterial material, and the homogeneous jet impact pulverization preparation process is adopted, so as to realize the dense and uniform distribution of the copper-based nano antibacterial material in the coating, achieving the effects of fully purifying formaldehyde and thoroughly inhibiting mildew. In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Figure 1 It is a process flow chart of a preparation process of a copper-based nano antibacterial coating of the present invention. Specific embodiments

[0004] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. In the description of a preparation process of a copper-based nano antibacterial coating of the present invention, a binary homogeneous mixing preparation process is adopted. That is, one preparation process is the raw material dispersion process treatment. According to the standard weighing ratio of adding 400 grams of vinyl acetate-acrylate emulsion / ethylene-propylene emulsion and 5 grams of copper-based nano antibacterial material powder to 1000 grams of water, the total weight of the batch ratio is 1 ton of ingredients and is put into the dispersion tank, and the dispersion process treatment is carried out by stirring at 900 r / min for 18 min. The slurry after the dispersion process treatment in the dispersion tank is prepared by the high-pressure jet impact pulverization process of the nano homogenizer to obtain a copper-based nano antibacterial emulsion mixture with an antibacterial material particle size of 300 nm, that is, the binary preparation process is completed. According to the ratio of adding 500 grams of water, 10 grams of wetting agent, and 5 grams of copper-based nano antibacterial material powder to 1000 grams of titanium dioxide, and the total weight of the batch ratio is 300 kg per batch and is put into the dispersion tank for dispersion stirring process treatment until uniform, that is, the one preparation process is completed. Then the uniformly dispersed slurry enters the grinding machine for grinding and dispersion process treatment. That is, the binary preparation process is to prepare the base material of the coating by the grinding and dispersion process. Add the base material of the coating into a stirring container, start the stirrer, and stir at 800 r / min. Then, add 5 grams of defoamer, 18 grams of thickener, 5 grams of emulsifier, and 1000 grams of copper-based nano antibacterial material emulsion mixture in sequence, and stir for 20 minutes. Next, add 90 grams of binder, 12 grams of auxiliary agent, 15 grams of anti-aging agent, 120 grams of diluent, and 5 grams of pH regulator, and stir for 30 minutes. Finally, add diluent and water, and stir for 50 minutes. After completing the above preparation process, leave it for 60 minutes, observe whether the reflection of an object can be seen on the surface of the finished product, and take one side of a white paper to apply the coating. If the background color of the paper is not easily visible, and there is an obvious trace of water soaking the paper on the other side of the paper after 8 minutes, it is a qualified finished product. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A process for preparing a copper-based nano-anti-corrosion coating, characterized in that: The preparation process adopts a binary homogenous mixing preparation process, in which the copper-based nano-antibacterial material powder is added to water and acetic acid-propylene emulsion / ethylene-propylene emulsion according to a ratio and then prepared by a homogenizer high-pressure jet collision crushing process, thereby achieving dense and uniform distribution of the copper-based nano-antibacterial material in the coating.

2. A process for preparing a copper-based nano antibacterial coating as claimed in claim 1, characterized in that: The process principle is to add 1000 grams of water and 400 grams of acetic acid propylene emulsion / ethylene propylene emulsion to 5 grams of copper-based nano-antibacterial material powder, and use the high-pressure jet of the homogenizer to collide and crush through the internal diamond homogenization cavity to obtain a copper-based nano-antibacterial emulsion mixture. The unit nanometer size of the prepared mixture is less than 300nm, which can better penetrate into the bacteria and improve the antibacterial effect.

3. A process for preparing a copper-based nano antibacterial coating as claimed in claim 1, characterized in that: The preparation process for achieving dense and uniform distribution of copper-based nano-antibacterial materials in the coating includes: preparing the base material of the coating by a binary grinding and dispersion process, and the material ratio data is 1000 grams of titanium dioxide, 500 grams of water, 10 grams of wetting agent, and 5 grams of copper-based nano-antibacterial material powder. The total weight of each batch ratio is 300 kilograms, and the mixture is placed in a dispersion tank for dispersion and stirring until it is uniform.

4. A process for preparing a copper-based nano antibacterial coating as claimed in claim 1, characterized in that: Firstly, the copper-based nano antibacterial emulsion mixture is prepared by a homogenizer high-pressure jet collision crushing process.

5. A process for preparing a copper-based nano antibacterial coating as claimed in claim 1, characterized in that: The uniformly dispersed slurry is processed by a grinding and dispersing process using a grinder, that is, the binary preparation process is to prepare the base material of the coating by a grinding and dispersing process.

6. The process for preparing a copper-based nano-antibacterial coating is described. In the coating preparation, the ratio of copper-based nano-antibacterial material powder to titanium dioxide is greater than or equal to 5 grams of copper-based nano-antibacterial material powder per kilogram of titanium dioxide, and the unit particle size of the copper-based nano-antibacterial material powder is equal to or less than 500nm.

Images