阅读说明：本技术 一种抗菌型耐腐蚀防结垢食品级纳米复合涂层及制备方法 (Antibacterial corrosion-resistant anti-scaling food-grade nano composite coating and preparation method thereof ) 是由 黄伟东 李金龙 于 2021-01-19 设计创作，主要内容包括：本发明公开了一种抗菌型耐腐蚀防结垢食品级纳米复合涂层及制备方法,包括涂层主体,涂层主体包括有抗菌层、防结垢防腐蚀层、防水层和加固层,防结垢防腐蚀层的底部设有抗菌层,抗菌层的底部设有防水层,本发明的有益效果是：本发明通过均匀沉淀法制备得到纳米二氧化硅涂层,方法简便,原料成本低,该涂层既具备纳米材料的优势性能,同时又在一定程度上克服了纳米尺寸效应可能带来的生物安全性问题,通过设置防结垢防腐蚀层为纳米二氧化硅涂层材料有利于提高涂层的防结垢防腐蚀性能,通过设置防水层为聚氨酯防水涂料制成有利于提高涂层的防水性能通过设置加固层为玻璃纤维布制成,有利于提高涂层的强度,较传统复合涂层极大的提高了作业质量。(The invention discloses an antibacterial corrosion-resistant anti-scaling food-grade nano composite coating and a preparation method thereof, wherein the coating comprises a coating main body, the coating main body comprises an antibacterial layer, an anti-scaling anti-corrosion layer, a waterproof layer and a reinforcing layer, the antibacterial layer is arranged at the bottom of the anti-scaling anti-corrosion layer, and the waterproof layer is arranged at the bottom of the antibacterial layer, so that the antibacterial anti-scaling nano composite coating has the beneficial effects that: the nano silicon dioxide coating is prepared by a uniform precipitation method, the method is simple and convenient, the raw material cost is low, the coating not only has the advantages of the nano material, but also overcomes the biosafety problem possibly caused by the nano size effect to a certain extent, the anti-scaling and anti-corrosion performance of the coating can be improved by arranging the anti-scaling and anti-corrosion layer as the nano silicon dioxide coating material, the waterproof performance of the coating can be improved by arranging the waterproof layer as the polyurethane waterproof coating, the strength of the coating can be improved by arranging the reinforcing layer as the glass fiber cloth, and the operation quality is greatly improved compared with the traditional composite coating.)

1. The utility model provides an antibiotic corrosion-resistant anti-scaling food-grade nano composite coating, includes coating main part (1), its characterized in that, coating main part (1) is equipped with antibiotic layer (2) including antibiotic layer (2), anti-scaling anti-corrosion layer (3), waterproof layer (4) and back up coat (5), the bottom of anti-scaling anti-corrosion layer (3) is equipped with antibiotic layer (2), the bottom of antibiotic layer (2) is equipped with waterproof layer (4), the bottom of waterproof layer (4) is equipped with back up coat (5).

2. The antibacterial corrosion-resistant anti-scaling food-grade nanocomposite coating according to claim 1, wherein the antibacterial layer (2) is made of a silver-loaded titanium dioxide antibacterial coating material.

3. The antibacterial, corrosion-resistant and anti-scaling food-grade nanocomposite coating according to claim 1, wherein the anti-scaling and anti-corrosion layer (3) is made of a nano-silica coating material.

4. The antibacterial corrosion-resistant anti-scaling food-grade nano-composite coating according to claim 1, wherein the antibacterial silver-loaded titanium dioxide coating in the antibacterial layer (2) is synthesized by taking titanium sulfate as a titanium source, silver nitrate as a silver source, urea as a precipitator, ethylene glycol as a dispersing agent, polyvinylpyrrolidone and sodium dodecyl sulfate as stabilizers, respectively, and adopting a homogeneous precipitation method to prepare the antibacterial silver-loaded titanium dioxide coating under a shaking water bath heating condition of 90 ℃.

5. The antibacterial, corrosion-resistant and anti-scaling food-grade nanocomposite coating according to claim 1, wherein the preparation of the nano-silica coating in the anti-scaling and anti-corrosion layer (3) comprises the following steps:

s1, firstly, using absolute ethyl alcohol as a dispersing agent and ammonia water solution as a catalyst, preparing nano silicon dioxide particles by hydrolyzing tetraethoxysilane, stirring the mixture for 24 hours at the room temperature of 15-25 ℃, separating the nano silicon dioxide particles from the solution by centrifugal separation, washing 3 times with absolute ethyl alcohol, and then drying in vacuum for 12 hours:

s2, placing 3g of nano silica particles into 25mL of hexanol by using an experimental ultrasonic disperser, ultrasonically dispersing for 20 minutes, mixing and stirring the mixture and 1g of HTPS for 24 hours at room temperature, then mixing and stirring with 0.08g of DBTD and 10mL of hexanol for 30 minutes, grafting the HTPS to the surfaces of the nano silica particles, placing the HTPS modified nano silica particles into a precise oven, and drying for 2 hours at the temperature of 60 ℃:

s3, further modifying the HTPS modified silica particles by APTES, sequentially dispersing 3g of the HTPS modified nano silica particles and 1mL of APTES in 30mL of ethanol through ultrasonic treatment, then mixing and ultrasonically dispersing for 30 minutes, finally dropwise adding 1mL of deionized water into the mixture at the speed of 0.2mL/min, and ultrasonically dispersing for 3 hours to obtain the HTPS and APTES modified nano silica particles:

and S4, finally, mixing the modified nano silicon dioxide particles with ethyl acetate, magnetically stirring and ultrasonically oscillating, then adding a fluorosilicone resin-epoxy resin compound according to a certain proportion, and uniformly stirring to obtain the coating liquid.

6. The antibacterial corrosion-resistant anti-scaling food-grade nanocomposite coating according to claim 1, wherein the waterproof layer (4) is made of polyurethane waterproof paint.

7. The antibacterial, corrosion-resistant and anti-scaling food-grade nanocomposite coating according to claim 1, wherein the reinforcing layer (5) is made of glass fiber cloth.

8. The antibacterial, corrosion-resistant and anti-scaling food-grade nanocomposite coating according to claim 7, wherein the glass fiber cloth is formed by stacking at least two layers of glass fiber sheets, and the adjacent glass fiber sheets are arranged in a staggered manner.

Technical Field

The invention belongs to the technical field of coating preparation, and particularly relates to an antibacterial corrosion-resistant anti-scaling food-grade nano composite coating and a preparation method thereof.

Background

In the existing life, the composite coating is a spraying coating composed of two or more different materials, and the traditional composite coating has poor corrosion resistance and antibacterial ability in the using process, can not effectively prevent scaling and is difficult to meet the requirements of modern life and production.

The invention content is as follows:

the invention aims to solve the problems in the prior art by providing an antibacterial corrosion-resistant anti-scaling food-grade nano composite coating and a preparation method thereof.

In order to solve the above problems, the present invention provides a technical solution:

the utility model provides an antibiotic corrosion-resistant anti-scaling food-grade nano composite coating, includes the coating main part, the coating main part is including antibiotic layer, anti-scaling anti-corrosion coating, waterproof layer and back up coat, the bottom of anti-scaling anti-corrosion coating is equipped with antibiotic layer, the bottom of antibiotic layer is equipped with the waterproof layer, the bottom of waterproof layer is equipped with the back up coat.

Preferably, the antibacterial layer is made of a silver-loaded titanium dioxide antibacterial coating material.

Preferably, the anti-scaling and anti-corrosion layer is made of nano silicon dioxide coating materials.

Preferably, the synthesis of the silver-loaded titanium dioxide antibacterial coating in the antibacterial layer takes titanium sulfate as a titanium source, silver nitrate as a silver source, urea as a precipitator and ethylene glycol as a dispersing agent, and takes polyvinylpyrrolidone and sodium dodecyl sulfate as stabilizing agents respectively, and the silver-loaded titanium dioxide antibacterial coating is prepared by adopting a homogeneous precipitation method under the condition of heating in a shaking water bath at 90 ℃.

Preferably, the preparation of the nano-silica coating in the anti-scaling and anti-corrosion layer comprises the following steps:

s1, firstly, using absolute ethyl alcohol as a dispersing agent and ammonia water solution as a catalyst, preparing nano silicon dioxide particles by hydrolyzing tetraethoxysilane, stirring the mixture for 24 hours at the room temperature of 15-25 ℃, separating the nano silicon dioxide particles from the solution by centrifugal separation, washing 3 times with absolute ethyl alcohol, and then drying in vacuum for 12 hours:

s2, placing 3g of nano silica particles into 25mL of hexanol by using an experimental ultrasonic disperser, ultrasonically dispersing for 20 minutes, mixing and stirring the mixture and 1g of HTPS for 24 hours at room temperature, then mixing and stirring with 0.08g of DBTD and 10mL of hexanol for 30 minutes, grafting the HTPS to the surfaces of the nano silica particles, placing the HTPS modified nano silica particles into a precise oven, and drying for 2 hours at the temperature of 60 ℃:

s3, further modifying the HTPS modified silica particles by APTES, sequentially dispersing 3g of the HTPS modified nano silica particles and 1mL of APTES in 30mL of ethanol through ultrasonic treatment, then mixing and ultrasonically dispersing for 30 minutes, finally dropwise adding 1mL of deionized water into the mixture at the speed of 0.2mL/min, and ultrasonically dispersing for 3 hours to obtain the HTPS and APTES modified nano silica particles:

and S4, finally, mixing the modified nano silicon dioxide particles with ethyl acetate, magnetically stirring and ultrasonically oscillating, then adding a fluorosilicone resin-epoxy resin compound according to a certain proportion, and uniformly stirring to obtain the coating liquid.

Preferably, the waterproof layer is made of polyurethane waterproof paint.

Preferably, the reinforcing layer is made of glass fiber cloth.

Preferably, the glass fiber cloth is formed by overlapping at least two layers of glass fiber sheets, and the adjacent glass fiber sheets are arranged in a staggered mode.

The invention has the beneficial effects that: the nano silicon dioxide coating is prepared by a uniform precipitation method, the method is simple and convenient, the raw material cost is low, the coating not only has the advantages of the nano material, but also overcomes the biosafety problem possibly caused by the nano size effect to a certain extent, the anti-scaling and anti-corrosion performance of the coating can be improved by arranging the anti-scaling and anti-corrosion layer as the nano silicon dioxide coating material, the waterproof performance of the coating can be improved by arranging the waterproof layer as the polyurethane waterproof coating, the strength of the coating can be improved by arranging the reinforcing layer as the glass fiber cloth, and the operation quality is greatly improved compared with the traditional composite coating.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a coating body; 2. an antimicrobial layer; 3. an anti-scaling and anti-corrosion layer; 4. a waterproof layer; 5. and a reinforcing layer.

The specific implementation mode is as follows:

as shown in fig. 1, the specific embodiment of the present invention adopts the following technical solutions:

example (b):

the utility model provides an antibiotic corrosion-resistant anti-scaling food-grade nano composite coating, includes coating main part 1, and coating main part 1 is equipped with antibiotic layer 2 including antibiotic layer 2, anti-scaling anti-corrosion layer 3, waterproof layer 4 and back up coat 5, the bottom of anti-scaling anti-corrosion layer 3, and the bottom of antibiotic layer 2 is equipped with waterproof layer 4, and the bottom of waterproof layer 4 is equipped with back up coat 5.

The antibacterial layer 2 is made of a silver-loaded titanium dioxide antibacterial coating material, and the antibacterial performance of the coating can be improved by arranging the antibacterial layer 2 as the silver-loaded titanium dioxide antibacterial coating material.

The anti-scaling and anti-corrosion layer 3 is made of a nano silicon dioxide coating material, and the anti-scaling and anti-corrosion performance of the coating can be improved by arranging the anti-scaling and anti-corrosion layer 3 made of the nano silicon dioxide coating material.

The synthesis of the silver-loaded titanium dioxide antibacterial coating in the antibacterial layer 2 takes titanium sulfate as a titanium source, silver nitrate as a silver source, urea as a precipitator and ethylene glycol as a dispersing agent, and takes polyvinylpyrrolidone and sodium dodecyl sulfate as stabilizing agents respectively, and the silver-loaded titanium dioxide antibacterial coating is prepared by adopting a homogeneous precipitation method under the condition of a shaking water bath heating condition at 90 ℃.

The preparation of the nano silicon dioxide coating in the anti-scaling and anti-corrosion layer 3 comprises the following steps:

s1, firstly, using absolute ethyl alcohol as a dispersing agent and ammonia water solution as a catalyst, preparing nano silicon dioxide particles by hydrolyzing tetraethoxysilane, stirring the mixture for 24 hours at the room temperature of 15-25 ℃, separating the nano silicon dioxide particles from the solution by centrifugal separation, washing 3 times with absolute ethyl alcohol, and then drying in vacuum for 12 hours:

s2, placing 3g of nano silica particles into 25mL of hexanol by using an experimental ultrasonic disperser, ultrasonically dispersing for 20 minutes, mixing and stirring the mixture and 1g of HTPS for 24 hours at room temperature, then mixing and stirring with 0.08g of DBTD and 10mL of hexanol for 30 minutes, grafting the HTPS to the surfaces of the nano silica particles, placing the HTPS modified nano silica particles into a precise oven, and drying for 2 hours at the temperature of 60 ℃:

s3, further modifying the HTPS modified silica particles by APTES, sequentially dispersing 3g of the HTPS modified nano silica particles and 1mL of APTES in 30mL of ethanol through ultrasonic treatment, then mixing and ultrasonically dispersing for 30 minutes, finally dropwise adding 1mL of deionized water into the mixture at the speed of 0.2mL/min, and ultrasonically dispersing for 3 hours to obtain the HTPS and APTES modified nano silica particles:

and S4, finally, mixing the modified nano silicon dioxide particles with ethyl acetate, magnetically stirring and ultrasonically oscillating, then adding a fluorosilicone resin-epoxy resin compound according to a certain proportion, and uniformly stirring to obtain the coating liquid.

Wherein, waterproof layer 4 is made for polyurethane waterproof coating, makes for polyurethane waterproof coating through setting up waterproof layer 4 and is favorable to improving the waterproof performance of coating.

The reinforcing layer 5 is made of glass fiber cloth, and the strength of the coating is improved by arranging the reinforcing layer 5 made of glass fiber cloth.

The glass fiber cloth is formed by overlapping at least two layers of glass fiber sheets, and the adjacent glass fiber sheets are arranged in a staggered mode.

Specifically, the invention utilizes PVP or SDS as a stabilizer, prepares the nano-silica coating by a uniform precipitation method, has simple and convenient method and low raw material cost, the coating not only has the advantages of the nano-material, but also overcomes the biosafety problem possibly brought by the nano-size effect to a certain extent, wherein, the microsphere antibacterial particles have higher specific surface area, the contact chance of bacteria and the antibacterial microsphere particles is increased, the antibacterial performance of the microsphere particles is favorably exerted, the antibacterial performance of the coating is favorably improved by arranging the antibacterial layer 2 as the silver-loaded titanium dioxide antibacterial coating material, the anti-scaling and anti-corrosion layer 3 as the nano-silica coating material is favorably improved, the waterproof performance of the coating is favorably improved by arranging the waterproof layer 4 as the polyurethane waterproof coating material, and the reinforcing layer 5 as the glass fiber cloth, the strength of the coating is improved, and the operation quality is greatly improved compared with the traditional composite coating.

While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.