Antibacterial mildew-proof coating putty material and preparation method thereof

Abstract

The invention discloses an antibacterial and mildew-proof coating putty material and a preparation method, and belongs to the field of putty materials. The antibacterial and mildew-proof coating putty material is prepared from the following raw materials in parts by weight: 80 to 100 parts of putty powder, 7 to 20 parts of copper-based antibacterial and mildew-proof powder, 6 to 9 parts of reinforcing agent, 15 to 25 parts of binder, 0.3 to 1.2 parts of dispersing agent, 3 to 4 parts of thickening agent, 35 to 60 parts of water and 18 to 23 parts of antioxidant compound. The copper-based antibacterial and mildew-proof powder cooperates with the nano-zinc oxide to broaden the antibacterial spectrum of the antibacterial and mildew-proof coating putty material, hydrogen atoms are provided and oxidation reaction is blocked on the basis of addition of the antioxidant compound and setting of the tert-butylhydroquinone, and the effect of the tert-butylhydroquinone is enhanced through the synergistic effect of the rosemary extract, so that the antibacterial and mildew-proof coating putty material has a good antibacterial and mildew-proof effect. Due to the addition of phytic acid, the oxidation of copper ions is reduced, so that the oxidation of copper ions in the antibacterial and mildew-proof coating putty material is inhibited.

Description

Technical Field

[0001] The present invention relates to the technical field of putty materials, and specifically to an antibacterial and mildew-proof coating putty material and a preparation method thereof. Background Technique

[0002] Putty material is a kind of building decoration material. The white layer on the surface of a newly purchased roughcast house - putty. Usually, the whiteness of putty is above 90 and the fineness is above 330. Putty is a base material used for wall repair and leveling, laying a good foundation for the next decoration (painting or wallpapering). Putty is divided into two types: interior wall and exterior wall. Exterior wall putty has to resist wind, sun and rain, so it has high colloid content and strength, and the environmental protection index is slightly lower. Interior wall putty has better comprehensive index and is healthy and environmentally friendly. Therefore, interior wall putty is not used for exterior walls, and exterior wall putty is not used for interior walls. Usually, putty is gypsum - based or cement - based, so the surface is rough and it is relatively easy to bond firmly. However, during construction, an interface agent still needs to be applied on the base layer to seal the base layer and improve the adhesion of the wall surface, so that the putty can better adhere to the base surface.

[0003] Most existing coating putty materials are prone to growing mold and bacteria in a humid environment, which affects the appearance and endangers human health. Therefore, generally, antibacterial agents are added to the putty materials to improve the antibacterial and mildew - proof performance of the putty materials. However, when adding antibacterial agents to most existing putty materials, generally a single antibacterial agent is mostly used, with a narrow antibacterial spectrum or easy to oxidize and become ineffective.

[0004] Therefore, copper - based antibacterial agents are added to the putty materials to broaden the antibacterial spectrum of the putty materials. However, during the use of existing copper - based antibacterial agents, the copper - based antibacterial agents come into contact with oxygen in the air, causing the copper - based antibacterial agents to undergo redox reactions. As a result, when the copper - based antibacterial agents are used, the copper - based antibacterial effect is reduced due to redox reactions, affecting the antibacterial performance of the putty materials.

[0005] Therefore, the present invention provides an antibacterial and mildew - proof coating putty material and a preparation method thereof to solve the above problems. Summary of the Invention

[0006] (I) Technical Problems to be Solved The present invention provides an antibacterial and mildew - proof coating putty material and a preparation method thereof, aiming to solve the problems raised in the background technique.

[0007] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: An antibacterial and mildew-proof paint putty material, including an antibacterial and mildew-proof paint putty material, which comprises the following raw materials in parts by weight: 80-100 parts of putty powder, 7-20 parts of copper-based antibacterial and mildew-proof powder, 6-9 parts of reinforcing agent, 15-25 parts of binder, 0.3-1.2 parts of dispersant, 3-4 parts of thickener, 35-60 parts of water, and 18-23 parts of antioxidant complex.

[0008] As a preferred technical solution of this application, the putty powder is talc powder, and the copper-based antibacterial and mildew-proof powder is used to achieve the antibacterial and mildew-proof effect of the putty material. The reinforcing agent is nano-zinc oxide, which is used to enhance the mechanical strength of the putty material and synergistically enhance the antibacterial effect of the copper-based antibacterial and mildew-proof powder.

[0009] As a preferred technical solution of this application, the binder is water-based acrylic resin, the dispersant is polycarboxylic acid, the thickener is hydroxyethyl cellulose, and the antioxidant complex is water-soluble.

[0010] As a preferred technical solution of this application, the main materials used in the antioxidant complex include the following raw materials in parts by weight: 10-12 parts of tert-butylhydroquinone, 5-7 parts of rosemary extract, and 3-4 parts of phytic acid. The antioxidant complex is prepared by mixing tert-butylhydroquinone, rosemary extract, and phytic acid.

[0011] As a preferred technical solution of this application, the antibacterial and mildew-proof paint putty material comprises the following raw materials in parts by weight: 100 parts of putty powder, 20 parts of copper-based antibacterial and mildew-proof powder, 9 parts of reinforcing agent, 25 parts of binder, 1.2 parts of dispersant, 4 parts of thickener, 60 parts of water, and 23 parts of antioxidant complex.

[0012] As a preferred technical solution of this application, the antibacterial and mildew-proof paint putty material comprises the following raw materials in parts by weight: 80 parts of putty powder, 7 parts of copper-based antibacterial and mildew-proof powder, 6 parts of reinforcing agent, 15 parts of binder, 0.3 parts of dispersant, 3 parts of thickener, 35 parts of water, and 18 parts of antioxidant complex.

[0013] As a preferred technical solution of this application, the antibacterial and mildew-proof paint putty material comprises the following raw materials in parts by weight: 90 parts of putty powder, 13 parts of copper-based antibacterial and mildew-proof powder, 8 parts of reinforcing agent, 19 parts of binder, 0.7 parts of dispersant, 3 parts of thickener, 47 parts of water, and 21 parts of antioxidant complex.

[0014] A preparation method of an antibacterial and mildew-proof paint putty material, using the above-mentioned antibacterial and mildew-proof paint putty material, comprises the following steps: S1: Place putty powder, nano-zinc oxide, and copper-based antibacterial and mildew-proof powder in a mixer and dry-mix them evenly. Add dispersant and thickener to water and stir with a stirrer until completely dissolved. S2: Squeeze the waterborne acrylic resin into the solution and stir at low speed. Slowly add it to the mixture. Based on the mixer, mix the solution and the mixture evenly. Let the mixed mixture stand for one day and adjust the pH value. S3: Vacuum package the mixture after standing to obtain the final antibacterial and mildew-proof paint putty material.

[0015] As a preferred technical solution of this application, the preparation method of the copper-based antibacterial and mildew-proof powder is as follows: S01: Take out a quantitative amount of basic copper carbonate, add an appropriate amount of deionized water, stir the mixture of the two to make a suspension, and weigh a quantitative amount of trisodium phosphate and dissolve it in deionized water to make a precipitant solution. Weigh a quantitative amount of sodium xylene sulfonate and dissolve it in deionized water to make a dispersant solution. At the same time, add the antioxidant complex to the solution. S02: Place the suspension in a reaction kettle, and slowly drop the precipitant solution and the dispersant solution into the reaction kettle. Use ultrasonic mixing technology to mix the reagents in the reaction kettle and react to generate smaller basic copper carbonate precipitates. S03: Let the reacted reagents stand for one day, and then separate the precipitate from the reagents by filtration to obtain basic copper carbonate precipitate. Place the basic copper carbonate precipitate in a mixture of deionized water and ethanol, and wash the basic copper carbonate precipitate multiple times to remove residual impurities. S04: Place the washed basic copper carbonate precipitate in an oven and dry it for one day to reduce the water content of the basic copper carbonate precipitate to 0.3%. Place the dried basic copper carbonate precipitate in a heating furnace to decompose the basic copper carbonate precipitate into copper oxide. S05: Crush the copper oxide by mechanical crushing method and control the particle size of the copper oxide powder within 110 - 230 nm. Screen and classify the copper oxide powder to obtain the final copper-based antibacterial and mildew-proof powder, and vacuum package it.

[0016] As a preferred technical solution of this application, the above antibacterial and mildew-proof paint putty material is used to improve the antibacterial spectrum of the antibacterial and mildew-proof paint putty material.

[0017] (III) Beneficial effects Based on the mutual cooperation of the copper-based antibacterial and mildew-proof powder and the antioxidant complex, the copper-based antibacterial and mildew-proof powder synergizes with nano-zinc oxide to broaden the antibacterial spectrum of the antibacterial and mildew-proof paint putty material and improve the antibacterial range of the antibacterial and mildew-proof paint putty material. Based on the addition of an antioxidant complex and the setting of tert-butylhydroquinone, hydrogen atoms are provided to block the oxidation reaction. Meanwhile, through the synergistic effect of rosemary extract, while enhancing the effect of tert-butylhydroquinone, due to the addition of phytic acid, the oxidation of copper ions is reduced, thereby inhibiting the oxidation of copper ions in the antibacterial and mildew-proof coating putty material and avoiding the reduction of antibacterial performance caused by the oxidation of copper ions in the antibacterial and mildew-proof coating putty material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a preparation block diagram of an antibacterial and mildew-proof coating putty material; Figure 2 It is a preparation block diagram of a copper-based antibacterial and mildew-proof powder in an antibacterial and mildew-proof coating putty material and its preparation method; Figure 3 It is an antibacterial spectrum experiment table of an antibacterial and mildew-proof coating putty material; Figure 4 It is a line graph of antibacterial spectrum experiment data of an antibacterial and mildew-proof coating putty material; Figure 5 It is an experiment table of copper ion oxidation rate and antibacterial durability of an antibacterial and mildew-proof coating putty material; Figure 6 It is a line graph of copper ion oxidation rate and antibacterial durability experiment data of an antibacterial and mildew-proof coating putty material. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] The present invention provides an antibacterial material for electrostatic spraying, its preparation method and application. Referring to Figures 1-6 , the present invention provides four embodiments: Embodiment 1: The main materials used in this antibacterial and mildew-proof coating putty material include the following raw materials in parts by weight: 80-100 parts of putty powder, 7-20 parts of copper-based antibacterial and mildew-proof powder, 6-9 parts of enhancer, 15-25 parts of binder, 0.3-1.2 parts of dispersant, 3-4 parts of thickener, 35-60 parts of water, and 18-23 parts of antioxidant complex; Specifically in this embodiment (components mixed by weight percentage): The antibacterial and mildew-proof coating putty material comprises the following raw materials in parts by weight: 100 parts of putty powder, 20 parts of copper-based antibacterial and mildew-proof powder, 9 parts of reinforcing agent, 25 parts of binder, 1.2 parts of dispersant, 4 parts of thickener, 60 parts of water, and 23 parts of antioxidant complex; Furthermore, the putty powder is talc powder. The copper-based antibacterial and mildew-proof powder is used to achieve the antibacterial and mildew-proof effect of the putty material. The reinforcing agent is nano-zinc oxide, which is used to enhance the mechanical strength of the putty material and synergistically enhance the antibacterial effect of the copper-based antibacterial and mildew-proof powder; Furthermore, the binder is water-based acrylic resin, the dispersant is polycarboxylic acid, the thickener is hydroxyethyl cellulose, and the antioxidant complex is water-soluble; Furthermore, the main materials used in the antioxidant complex comprise the following raw materials in parts by weight: 10 - 12 parts of tert-butylhydroquinone, 5 - 7 parts of rosemary extract, and 3 - 4 parts of phytic acid. The antioxidant complex is prepared by mixing tert-butylhydroquinone, rosemary extract, and phytic acid; The preparation method of the antibacterial and mildew-proof coating putty material specifically comprises the following steps: S1: Place the putty powder, nano-zinc oxide, and copper-based antibacterial and mildew-proof powder in a mixer and dry-mix them evenly. Add the dispersant and thickener to water and stir with a stirrer until completely dissolved; S2: Squeeze the water-based acrylic resin into the solution and stir at a low speed, slowly add it to the mixture, and based on the mixer, mix the solution and the mixture evenly. Let the mixed mixture stand for one day and adjust the pH value; S3: Vacuum package the standing mixture to obtain the final antibacterial and mildew-proof coating putty material; The preparation method of the copper-based antibacterial and mildew-proof powder is as follows: S01: Take a quantitative amount of basic copper carbonate, add an appropriate amount of deionized water, stir the mixture of the two to make a suspension, and weigh a quantitative amount of trisodium phosphate, dissolve it in deionized water to make a precipitant solution, weigh a quantitative amount of sodium xylene sulfonate, dissolve it in deionized water to make a dispersant solution, and at the same time add the antioxidant complex to the solution; S02: Place the suspension in a reaction kettle, and slowly drop the precipitant solution and the dispersant solution into the reaction kettle. Use ultrasonic mixing technology to mix the reagents in the reaction kettle and make them react to generate smaller basic copper carbonate precipitates; S03: Let the reacted reagents stand for one day, and then separate the precipitate from the reagents by filtration to obtain basic copper carbonate precipitate. Place the basic copper carbonate precipitate in a mixture of deionized water and ethanol, and wash the basic copper carbonate precipitate multiple times to remove residual impurities; S04: Place the washed basic copper carbonate precipitate inside a drying oven and dry it for one day to reduce the water content of the basic copper carbonate precipitate to 0.3%. Then place the dried basic copper carbonate precipitate in a heating furnace to decompose the basic copper carbonate precipitate into copper oxide; S05: Crush the copper oxide by mechanical crushing and control the particle size of the copper oxide powder to be within 110 - 230 nm. Screen and classify the copper oxide powder to obtain the final copper-based antibacterial and mildew-proof powder, and vacuum package it; This antibacterial and mildew-proof coating putty material is applied to enhance the antibacterial spectrum of the antibacterial and mildew-proof coating putty material.

[0021] Example Two: Based on Example One, further, the main materials used in this antibacterial and mildew-proof coating putty material include the following raw materials in parts by weight: 80 - 100 parts of putty powder, 6 - 9 parts of reinforcing agent, 15 - 25 parts of binder, 0.3 - 1.2 parts of dispersant, 3 - 4 parts of thickener, 35 - 60 parts of water, and 18 - 23 parts of antioxidant complex; Specifically in this example (components mixed by weight percentage): This antibacterial and mildew-proof coating putty material includes the following raw materials in parts by weight: 80 parts of putty powder, 7 parts of copper-based antibacterial and mildew-proof powder, 6 parts of reinforcing agent, 15 parts of binder, 0.3 part of dispersant, 3 parts of thickener, 35 parts of water, and 18 parts of antioxidant complex; The preparation method of the antibacterial and mildew-proof coating putty material specifically includes the following steps: S1: Place the putty powder, nano-zinc oxide, and copper-based antibacterial and mildew-proof powder in a mixer and dry mix them evenly. Add the dispersant and thickener to water and stir with a stirrer until completely dissolved; S2: Squeeze the waterborne acrylic resin into the solution and stir at a low speed, slowly add it to the mixed material. Based on the mixer, mix the solution and the mixed material evenly. Let the mixed mixture stand for one day and adjust the pH value; S3: Vacuum package the standing mixture to obtain the final antibacterial and mildew-proof coating putty material.

[0022] Example Three: Based on Example One and Example Two, further, the main materials used in this antibacterial and mildew-proof coating putty material include the following raw materials in parts by weight: 80 - 100 parts of putty powder, 7 - 20 parts of copper-based antibacterial and mildew-proof powder, 6 - 9 parts of reinforcing agent, 15 - 25 parts of binder, 0.3 - 1.2 parts of dispersant, 3 - 4 parts of thickener, 35 - 60 parts of water, and 18 - 23 parts of antioxidant complex; Specifically in this embodiment (components mixed by weight percentage): The antibacterial and mildew-proof coating putty material comprises the following raw materials in parts by weight: 90 parts of putty powder, 13 parts of copper-based antibacterial and mildew-proof powder, 8 parts of reinforcing agent, 19 parts of binder, 0.7 part of dispersant, 3 parts of thickener, and 47 parts of water; The preparation method of the antibacterial and mildew-proof coating putty material specifically comprises the following steps: S1: Place the putty powder, nano-zinc oxide, and copper-based antibacterial and mildew-proof powder in a mixer and dry-mix evenly. Add the dispersant and thickener to water and stir with a stirrer until completely dissolved; S2: Squeeze the waterborne acrylic resin into the solution and stir at a low speed. Slowly add it to the mixed material. Based on the mixer, mix the solution and the mixed material evenly. Let the mixed mixture stand for one day and adjust the pH value; S3: Vacuum package the standing mixture to obtain the final antibacterial and mildew-proof coating putty material.

[0023] Example 4: Regarding the technical solutions provided in Example 1, Example 2, and Example 3, to explore the promotion effect of the disclosed examples on the antibacterial and mildew-proof coating putty material, further experimental verification was carried out. The experimental steps are as follows: Prepare 40 workpieces, with 10 workpieces in each group. Among them, three groups respectively use the antibacterial and mildew-proof coating putty materials prepared in Example 1, Example 2, and Example 3 to form Experimental Group 1, Experimental Group 2, and the Control Group respectively. Another group uses the existing antibacterial and mildew-proof coating putty material to form the blank control group, obtaining Figure 3 and Figure 5 the experimental data in; From Figure 3 and Figure 5 it can be seen that when Experimental Group 1 is compared with the blank control group, Experimental Group 1 has a better inhibitory effect on the copper ion antioxidant reduction reaction, and Experimental Group 1 also further improves the antibacterial spectrum of the antibacterial and mildew-proof coating putty material; When Experimental Group 1 is compared with Experimental Group 2, the range of the antibacterial spectrum of Experimental Group 1 is higher than that of Experimental Group 2; When Experimental Group 1 is compared with the control group, the antibacterial spectrum of the control group is similar to that of Experimental Group 1, and Experimental Group 1 has a better inhibitory effect on the copper ion antioxidant reduction reaction.

[0024] From the above, it can be seen that in Experimental Group 1, the ratio of the antibacterial and mildew-proof coating putty material is appropriate. After spraying on the workpiece, it not only improves the antibacterial spectrum of the antibacterial and mildew-proof coating putty material but also enhances the performance of the copper ions in the antibacterial and mildew-proof coating putty material to inhibit the oxidation-reduction reaction.

[0025] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. An antibacterial and mildew-proof coating putty material, characterized in that, Comprising an antibacterial and mildew-proof coating putty material, the antibacterial and mildew-proof coating putty material comprises raw materials in the following parts by weight: 80-100 parts of putty powder, 7-20 parts of copper-based antibacterial and mildew-proof powder, 6-9 parts of reinforcing agent, 15-25 parts of binder, 0.3-1.2 parts of dispersant, 3-4 parts of thickener, 35-60 parts of water and 18-23 parts of antioxidant complex.

2. The antibacterial and mildew-proof coating putty material according to claim 1, characterized in that, The putty powder is talc powder, the copper-based antibacterial and mildew-proof powder is used to achieve the antibacterial and mildew-proof effect of the putty material, and the reinforcing agent is nano zinc oxide, which is used to enhance the mechanical strength of the putty material and synergistically enhance the antibacterial effect of the copper-based antibacterial and mildew-proof powder.

3. An antibacterial and mildew-proof coating putty material according to claim 1, characterized in that, The binder is water-based acrylic resin, the dispersant is polycarboxylic acid, the thickener is hydroxyethyl cellulose, and the antioxidant complex is water-soluble.

4. An antibacterial and mildew-proof paint putty material according to claim 1, characterized in that, Among them, the main materials used in the antioxidant complex comprise raw materials in the following parts by weight: 10-12 parts of tert-butylhydroquinone, 5-7 parts of rosemary extract and 3-4 parts of phytic acid, and the antioxidant complex is prepared by mixing tert-butylhydroquinone, rosemary extract and phytic acid.

5. An antibacterial and mildew-proof coating putty material according to claim 1, characterized in that The antibacterial and mildew-proof coating putty material comprises raw materials in the following parts by weight: 100 parts of putty powder, 20 parts of copper-based antibacterial and mildew-proof powder, 9 parts of reinforcing agent, 25 parts of binder, 1.2 parts of dispersant, 4 parts of thickener, 60 parts of water and 23 parts of antioxidant complex.

6. An antibacterial and mildew-proof paint putty material according to claim 1, characterized in that, The antibacterial and mildew-proof coating putty material comprises raw materials in the following parts by weight: 80 parts of putty powder, 7 parts of copper-based antibacterial and mildew-proof powder, 6 parts of reinforcing agent, 15 parts of binder, 0.3 parts of dispersant, 3 parts of thickener, 35 parts of water and 18 parts of antioxidant complex.

7. An antibacterial and mildew-proof paint putty material according to claim 1, characterized in that The antibacterial and mildew-proof coating putty material comprises raw materials in the following parts by weight: 90 parts of putty powder, 13 parts of copper-based antibacterial and mildew-proof powder, 8 parts of reinforcing agent, 19 parts of binder, 0.7 parts of dispersant, 3 parts of thickener, 47 parts of water and 21 parts of antioxidant complex.

8. A preparation method of an antibacterial and mildew-proof coating putty material, which is applied to the antibacterial and mildew-proof coating putty material described in any one of claims 1-7, and is characterized in that, Comprising the following steps: S1: Place the putty powder, nano zinc oxide and copper-based antibacterial and mildew-proof powder in a mixer and dry mix evenly, add the dispersant and thickener to water, and stir with a stirrer until completely dissolved; S2: Squeeze the water-based acrylic resin into the solution and stir at a low speed, slowly add it to the mixed material, based on the mixer, mix the solution and the mixed material evenly, let the mixed mixture stand for one day, and adjust the pH value; S3: Vacuum package the standing mixture to obtain the final antibacterial and mildew-proof coating putty material.

9. The preparation method of an antibacterial and mildew-proof coating putty material according to claim 8, characterized in that, The preparation method of the copper-based antibacterial and mildew-proof powder is as follows: S01: Take out a quantitative amount of basic copper carbonate, add an appropriate amount of deionized water, stir the mixture of the two to make a suspension, weigh a quantitative amount of trisodium phosphate, dissolve it in deionized water to make a precipitating agent solution, weigh a quantitative amount of sodium xylene sulfonate, dissolve it in deionized water to make a dispersant solution, and at the same time add the antioxidant complex to the solution; S02: Place the suspension in a reaction kettle, slowly drip the precipitating agent solution and the dispersant solution into the reaction kettle, and use ultrasonic mixing technology to mix the reagents in the reaction kettle and react to generate smaller basic copper carbonate precipitates; S03: Leave the reacted reagent for one day, and then separate the precipitate from the reagent by filtration to obtain the basic copper carbonate precipitate. Place the basic copper carbonate precipitate in a mixture of deionized water and ethanol, and wash the basic copper carbonate precipitate multiple times to remove residual impurities; S04: Place the washed basic copper carbonate precipitate in an oven and dry it for one day to reduce the water content of the basic copper carbonate precipitate to 0.3%. Then place the dried basic copper carbonate precipitate in a heating furnace to decompose the basic copper carbonate precipitate into copper oxide; S05: Crush the copper oxide by mechanical crushing and control the particle size of the copper oxide powder to be within 110 - 230 nm. Screen and classify the copper oxide powder to obtain the final copper-based antibacterial and mildew-proof powder, and vacuum package it.

10. The antibacterial and mildew-proof coating putty material as described in claim 1, wherein It is applied to improve the antibacterial spectrum of antibacterial and mildew-proof coating putty materials.

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