Coating agent special for antibacterial lamp tube and preparation method of coating agent

Abstract

The invention provides a special coating agent for an antibacterial lamp tube and a preparation method thereof, and relates to the technical field of antibacterial material preparation, the preparation method comprises the following steps: carrying out heating dissolution treatment on an initial mixture through a constant temperature heating device to form a dissolved mixed solution, carrying out cooling treatment on the dissolved mixed solution through a cooling device to form a cooled mixture, the heating and dissolving treatment adopts ultrasonic-assisted dispersion, and the cooling treatment adopts a pH online monitoring and dynamic adjustment combined mode. According to the special coating agent for the antibacterial lamp tube and the preparation method of the special coating agent, the uniformity and stability of the coating agent are ensured by accurately controlling the proportions of the components such as the nanoscale silver oxide, the titanium dioxide powder and the nanoscale zinc oxide and adopting technologies such as ultrasonic-assisted dispersion and constant-temperature heating. And the fine preparation process is beneficial to improving the antibacterial performance and the photocatalytic effect of the antibacterial lamp tube.

Description

Technical Field

[0001] This invention relates to the field of antibacterial material preparation technology, specifically to a coating agent for antibacterial lamp tubes and its preparation method. Background Technology

[0002] Currently, antibacterial lamps typically achieve their antibacterial function by coating their surface with a specialized agent. Existing coating systems mostly use organic antibacterial agents or simple inorganic salts as the main components, inhibiting the growth of bacteria and fungi through the formation of a coating. These coatings have already found applications in lighting, medical device disinfection, and public space air purification. Because lamps generate continuous heat and are exposed to light for extended periods during operation, the coating needs to possess high heat resistance, stability, and long-lasting antibacterial properties. Existing lamp coatings often incorporate metal ions or oxides into their formulations to enhance antibacterial capabilities, and their uniformity and basic stability during use are ensured through conventional coating, curing, and storage processes.

[0003] However, existing antibacterial lamp coatings still have significant shortcomings. Current technologies focus on material selection and initial formulation, neglecting the precise balance between system stability and antibacterial concentration. During long-term irradiation and use, nanoparticles in the coating are prone to aggregation or sedimentation, leading to a reduction in active sites on the coating surface and causing fluctuations and attenuation in the antibacterial effect. When the coating layer loses its stable distribution, the antibacterial performance cannot be maintained in the long term, affecting the reliability of the lamp in critical scenarios such as medical and public place disinfection. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a coating agent specifically for antibacterial lamp tubes and its preparation method. The technical problem this invention aims to solve is: how to address the issues of uneven dispersion and poor stability of the antibacterial agent in the antibacterial lamp tube coating by optimizing the formulation and dispersion process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coating agent specifically for antibacterial lamp tubes, comprising the following components by weight percentage:

[0006] Nanoscale silver oxide: 0.25wt%-0.28wt%;

[0007] Nano-sized zinc oxide: 0.10wt%-0.30wt%;

[0008] Mixed alcohol solvents: 5.0wt%-12.0wt%;

[0009] Titanium dioxide powder: 0.25wt%-0.28wt%;

[0010] Ammonium sulfate: 14.3 wt% - 15.7 wt%;

[0011] Concentrated sulfuric acid: 45.0 wt% - 50.0 wt%;

[0012] Deionized water balance.

[0013] Preferably, both the nano-sized silver oxide and the titanium dioxide powder are spectrally pure and reference reagent grade raw materials to ensure the stability and purity of the solution, and the particle size range of the nano-sized silver oxide is 10nm-50nm.

[0014] A method for preparing a coating agent specifically for antibacterial lamp tubes, comprising:

[0015] S1. Using an electronic scale, nano-sized silver oxide, titanium dioxide powder, nano-sized zinc oxide, mixed alcohol solvent, ammonium sulfate and concentrated sulfuric acid are weighed to form a solid-liquid mixture. Deionized water is added to the solid-liquid mixture to form an initial mixture.

[0016] S2. The initial mixture is heated and dissolved using a constant temperature heating device to form a dissolved mixture, and the dissolved mixture is cooled using a cooling device to form a cooled mixture. The heating and dissolving process uses ultrasonic-assisted dispersion, and the cooling process uses a combination of online pH monitoring and dynamic adjustment.

[0017] S3. The cooled mixture is transferred to a volumetric flask for dilution and volume adjustment to form a homogeneous solution, wherein the dilution and volume adjustment are performed by magnetic stirring;

[0018] S4. The uniform solution is placed into a sealed tumbling bottle for tumbling and mixing to form a tumbling mixture. The tumbling mixture is then filtered to remove impurities and form a pure antibacterial agent solution. Zirconia balls are used as the medium in the tumbling and mixing process.

[0019] S5. The pure antibacterial agent solution is mixed and stored to form a stable and dispersed nano antibacterial agent solution.

[0020] Preferably, the weighing accuracy of the electronic scale is 0.01g, the titanium dioxide powder includes anatase-rutile composite to improve photocatalytic antibacterial performance, and the specific surface area of ​​the titanium dioxide powder is ≥50m². 2 / g.

[0021] Preferably, the constant temperature heating device is a constant temperature heating stirrer, used to continuously heat the initial mixture and maintain a stable temperature. The temperature of the constant temperature heating device is 80℃-120℃, and the rotation speed is 300rpm-600rpm. The cooling device is a water bath cooler, used to cool the dissolved mixture to room temperature. The temperature adjustment range of the cooling device is 15℃-30℃. The frequency of the ultrasonic-assisted dispersion is 20kHz-40kHz, and the power is 100W-300W, to improve the dispersion uniformity of the nanoparticles in the solution. The cooling treatment includes the following steps:

[0022] S21. The pH value of the cooling mixture is monitored in real time using the online pH monitoring system to generate monitoring results;

[0023] S22 dynamically adds deionized water to the dissolved mixture through the dynamic adjustment to form the cooling mixture.

[0024] Preferably, the pH value of the homogeneous solution is 6-8, and the stirring speed of the magnetic stirrer is 300rpm-500rpm.

[0025] Preferably, the tumbling and mixing process takes 2 hours and the tumbling speed is 100rpm-200rpm. The diameter of the zirconia balls is 3mm-5mm to prevent the introduction of metal impurities. The filtration device performs the impurity removal process by filtering through a screen.

[0026] Preferably, the storage temperature is 5℃-25℃, which can maintain the pH of the nano antibacterial agent solution stable and without significant sedimentation for a storage period of not less than 6 months. The storage is carried out using a container bottle with a polytetrafluoroethylene coating on the inner wall. The container bottle has a pressure-resistant and sealed structure, which can withstand an internal pressure of 0.1MPa-0.2MPa during the storage process to maintain a leak-proof seal.

[0027] This invention provides a coating agent specifically for antibacterial lamp tubes and its preparation method. It has the following beneficial effects:

[0028] This coating agent specifically designed for antibacterial lamp tubes and its preparation method ensure the uniformity and stability of the coating agent by precisely controlling the proportions of components such as nano-sized silver oxide, titanium dioxide powder, and nano-sized zinc oxide, and employing technologies such as ultrasonic-assisted dispersion and constant-temperature heating. This meticulous preparation process helps improve the antibacterial properties and photocatalytic effects of the antibacterial lamp tubes.

[0029] Zirconia balls were used as the mixing medium for tumbling, effectively preventing the introduction of metal impurities and ensuring the purity of the solution. Furthermore, dynamic pH adjustment and precise storage management ensured that the resulting nano-antibacterial agent solution maintained stable dispersion for a considerable period, achieving a long-lasting antibacterial effect. Attached Figure Description

[0030] Figure 1 This is a process flow diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the device connection of the present invention;

[0032] Figure 3 This is a schematic diagram of the storage container structure of the present invention. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figure 1-3 As shown, this embodiment of the invention provides a coating agent specifically for antibacterial lamp tubes, comprising the following components by weight percentage:

[0036] Nanoscale silver oxide: 0.28 wt%.

[0037] Nano-sized zinc oxide: 0.30 wt%.

[0038] Mixed alcohol solvent: 12.0 wt%.

[0039] Titanium dioxide powder: 0.28 wt%.

[0040] Ammonium sulfate: 15.7 wt%.

[0041] Concentrated sulfuric acid: 50 wt%.

[0042] Deionized water: 21.44 wt%.

[0043] Both the nano-sized silver oxide and titanium dioxide powders are spectrally pure and reference reagent grade raw materials to ensure the stability and purity of the solution. The particle size range of the nano-sized silver oxide is 50 nm.

[0044] A method for preparing a coating agent specifically for antibacterial lamp tubes, comprising:

[0045] S1. Using an electronic balance, nano-sized silver oxide, titanium dioxide powder, nano-sized zinc oxide, mixed alcohol solvent, ammonium sulfate, and concentrated sulfuric acid are weighed to form a solid-liquid mixture. Deionized water is then added to this solid-liquid mixture to form an initial mixture. The weighing accuracy of the electronic balance is 0.01g. The titanium dioxide powder includes anatase-rutile composite to improve photocatalytic antibacterial properties. The specific surface area of ​​the titanium dioxide powder is ≥50m². 2 / g.

[0046] S2. The initial mixture is heated and dissolved using a constant-temperature heating device to form a dissolved mixture. This dissolved mixture is then cooled using a cooling device to form a cooled mixture. The heating and dissolving process employs ultrasonic-assisted dispersion, while the cooling process utilizes a combination of online pH monitoring and dynamic adjustment. The constant-temperature heating device is a constant-temperature stirring device used to continuously heat the initial mixture and maintain a stable temperature. The temperature of the constant-temperature heating device is 120℃, and the rotation speed is 600 rpm. The cooling device is a water bath cooler used to cool the dissolved mixture to room temperature. The temperature adjustment range of the cooling device is 30℃. The ultrasonic-assisted dispersion frequency is 40kHz, and the power is 300W to improve the dispersion uniformity of nanoparticles in the solution. The cooling process includes the following steps:

[0047] S21. Real-time monitoring of the pH value of the cooling mixture is performed through online pH monitoring to generate monitoring results.

[0048] S22 dynamically adds deionized water to the dissolved mixture to form a cooling mixture through dynamic adjustment.

[0049] S3. Transfer the cooled mixture to a volumetric flask for dilution and volume adjustment to form a homogeneous solution. Dilution and volume adjustment are performed using magnetic stirring. The pH of the homogeneous solution is 8, and the stirring speed of the magnetic stirrer is 500 rpm.

[0050] S4. The homogeneous solution is placed into a sealed tumbling flask for tumbling and mixing to form a tumbling mixture. The tumbling mixture is then filtered to remove impurities, resulting in a pure antibacterial agent solution. Zirconia balls are used as the tumbling and mixing medium. The tumbling and mixing process takes 2 hours at a speed of 200 rpm, and the zirconia balls have a diameter of 5 mm to prevent the introduction of metal impurities. The filtration device removes impurities through a screen.

[0051] S5. The pure antibacterial agent solution is mixed and stored to form a stable, dispersed nano-antibacterial agent solution. The storage temperature is 25℃, and the solution maintains a stable pH without significant sedimentation for at least 6 months. Storage is performed using containers with a polytetrafluoroethylene coating on the inner wall. These containers have a pressure-resistant, sealed structure and can withstand an internal pressure of 0.2 MPa during storage to maintain a leak-proof seal.

[0052] The antibacterial coating provided in this embodiment contains 0.28 wt% nano-sized silver oxide and 0.28 wt% titanium dioxide powder. Its formulation is optimized for antibacterial properties, and the antibacterial effect is enhanced through photocatalysis. During the preparation process, ultrasonic-assisted dispersion and constant-temperature heating ensured the uniform distribution of nanoparticles. The coating maintains a stable pH value and shows no significant sedimentation when stored at 25°C, exhibiting stability for at least 6 months. The coating can be stored in a sealed container and can withstand an internal pressure of 0.2 MPa, making it suitable for long-term storage and application.

[0053] Example 2

[0054] This invention provides a coating agent specifically for antibacterial lamp tubes, comprising the following components by weight percentage:

[0055] Nanoscale silver oxide: 0.265 wt%.

[0056] Nano-sized zinc oxide: 0.20 wt%.

[0057] Mixed alcohol solvent: 8.5 wt%.

[0058] Titanium dioxide powder: 0.265 wt%.

[0059] Ammonium sulfate: 15 wt%.

[0060] Concentrated sulfuric acid: 47.5 wt%.

[0061] Deionized water: 28.27 wt%.

[0062] Both the nano-sized silver oxide and titanium dioxide powders are spectrally pure and reference reagent grade raw materials to ensure the stability and purity of the solution. The particle size range of the nano-sized silver oxide is 30 nm.

[0063] A method for preparing a coating agent specifically for antibacterial lamp tubes, comprising:

[0064] S1. Using an electronic balance, nano-sized silver oxide, titanium dioxide powder, nano-sized zinc oxide, mixed alcohol solvent, ammonium sulfate, and concentrated sulfuric acid are weighed to form a solid-liquid mixture. Deionized water is then added to this solid-liquid mixture to form an initial mixture. The weighing accuracy of the electronic balance is 0.01g. The titanium dioxide powder includes anatase-rutile composite to improve photocatalytic antibacterial properties. The specific surface area of ​​the titanium dioxide powder is ≥50m². 2 / g.

[0065] S2. The initial mixture is heated and dissolved using a constant-temperature heating device to form a dissolved mixture. This dissolved mixture is then cooled using a cooling device to form a cooled mixture. The heating and dissolving process employs ultrasonic-assisted dispersion, while the cooling process utilizes a combination of online pH monitoring and dynamic adjustment. The constant-temperature heating device is a constant-temperature stirring device used to continuously heat the initial mixture and maintain a stable temperature. The temperature of the constant-temperature heating device is 100℃, and the rotation speed is 450 rpm. The cooling device is a water bath cooler used to cool the dissolved mixture to room temperature. The temperature adjustment range of the cooling device is 22.5℃. The ultrasonic-assisted dispersion frequency is 30 kHz, and the power is 200 W to improve the dispersion uniformity of nanoparticles in the solution. The cooling process includes the following steps:

[0066] S21. Real-time monitoring of the pH value of the cooling mixture is performed through online pH monitoring to generate monitoring results.

[0067] S22 dynamically adds deionized water to the dissolved mixture to form a cooling mixture through dynamic adjustment.

[0068] S3. Transfer the cooled mixture to a volumetric flask for dilution and volume adjustment to form a homogeneous solution. Dilution and volume adjustment are performed using magnetic stirring. The pH of the homogeneous solution is 7, and the stirring speed of the magnetic stirrer is 400 rpm.

[0069] S4. The homogeneous solution is placed into a sealed tumbling flask and tumbled to form a tumbling mixture. The mixture is then filtered to remove impurities, resulting in a pure antibacterial agent solution. Zirconia balls are used as the tumbling medium. The tumbling process lasts for 2 hours at a speed of 150 rpm, and the zirconia balls have a diameter of 4 mm to prevent the introduction of metal impurities. The filtration system removes impurities using a screen.

[0070] S5. The pure antibacterial agent solution is mixed and stored to form a stable, dispersed nano-antibacterial agent solution. The storage temperature is 15℃, and the solution maintains a stable pH without significant sedimentation for a storage period of no less than 6 months. The storage is carried out in containers with a polytetrafluoroethylene coating on the inner wall. The containers have a pressure-resistant and sealed structure, and can withstand an internal pressure of 0.15MPa during storage to maintain a leak-proof seal.

[0071] The antibacterial coating provided in this embodiment contains 0.265 wt% nano-sized silver oxide. A relatively mild acidic solution was selected during preparation, with an ammonium sulfate to concentrated sulfuric acid ratio of 62.5 wt%, ensuring the stability of the coating. Uniform dispersion of the nanoparticles was ensured by heating at 100°C and using ultrasonic power of 200 W. This coating maintains a stable pH value without significant sedimentation under storage conditions at 15°C, and its storage container can withstand an internal pressure of 0.15 MPa, making it suitable for long-term storage in low-temperature environments.

[0072] Example 3

[0073] This invention provides a coating agent specifically for antibacterial lamp tubes, comprising the following components by weight percentage:

[0074] Nanoscale silver oxide: 0.25 wt%.

[0075] Nano-sized zinc oxide: 0.10 wt%.

[0076] Mixed alcohol solvent: 5.0 wt%.

[0077] Titanium dioxide powder: 0.25 wt%.

[0078] Ammonium sulfate: 14.3 wt%.

[0079] Concentrated sulfuric acid: 45.0 wt%.

[0080] Deionized water: 35.1 wt%.

[0081] Both the nano-sized silver oxide and titanium dioxide powders are spectrally pure and reference reagent grade raw materials to ensure the stability and purity of the solution. The particle size range of the nano-sized silver oxide is 10 nm.

[0082] A method for preparing a coating agent specifically for antibacterial lamp tubes, comprising:

[0083] S1. Nanoscale silver oxide, titanium dioxide powder, ammonium sulfate, and concentrated sulfuric acid are weighed using an electronic balance to form a solid-liquid mixture. Deionized water is then added to this solid-liquid mixture to form an initial mixture. The weighing accuracy of the electronic balance is 0.01g. The titanium dioxide powder includes anatase-rutile composites to enhance photocatalytic antibacterial properties. The specific surface area of ​​the titanium dioxide powder is ≥50m². 2 / g.

[0084] S2. The initial mixture is heated and dissolved using a constant-temperature heating device to form a dissolved mixture. This dissolved mixture is then cooled using a cooling device to form a cooled mixture. The heating and dissolving process employs ultrasonic-assisted dispersion, while the cooling process utilizes a combination of online pH monitoring and dynamic adjustment. The constant-temperature heating device is a constant-temperature stirring device used to continuously heat the initial mixture and maintain a stable temperature. The temperature of the constant-temperature heating device is 80℃, and the rotation speed is 300 rpm. The cooling device is a water bath cooler used to cool the dissolved mixture to room temperature. The temperature adjustment range of the cooling device is 15℃. The ultrasonic-assisted dispersion frequency is 20kHz, and the power is 100W to improve the dispersion uniformity of nanoparticles in the solution. The cooling process includes the following steps:

[0085] S21. Real-time monitoring of the pH value of the cooling mixture is performed through online pH monitoring to generate monitoring results.

[0086] S22 dynamically adds deionized water to the dissolved mixture to form a cooling mixture through dynamic adjustment.

[0087] S3. Transfer the cooled mixture to a volumetric flask for dilution and volume adjustment to form a homogeneous solution. Dilution and volume adjustment are performed using magnetic stirring. The pH of the homogeneous solution is 6, and the stirring speed of the magnetic stirrer is 300 rpm.

[0088] S4. The homogeneous solution is placed into a sealed tumbling bottle for tumbling and mixing to form a tumbling mixture. The mixture is then filtered to remove impurities, resulting in a pure antibacterial agent solution. Zirconia balls are used as the tumbling and mixing medium. The tumbling and mixing process lasts for 2 hours at a speed of 100 rpm. The diameter of the zirconia balls is 3 mm to prevent the introduction of metal impurities. The filtration system removes impurities through a screen.

[0089] S5. The pure antibacterial agent solution is mixed and stored to form a stable, dispersed nano-antibacterial agent solution. The storage temperature is 5℃, and the solution maintains a stable pH without significant sedimentation for a storage period of no less than 6 months. The storage is carried out in containers with a polytetrafluoroethylene coating on the inner wall. The containers have a pressure-resistant and sealed structure, and can withstand an internal pressure of 0.1MPa during storage to maintain a leak-proof seal.

[0090] The antibacterial coating in this embodiment contains 0.25 wt% nano-sized silver oxide. The stability of the coating is improved by using appropriate amounts of ammonium sulfate and concentrated sulfuric acid in the formulation. During the preparation process, a temperature of 80°C and an ultrasonic dispersion power of 100 W were used to effectively ensure the uniform distribution of nanoparticles. The coating maintains a stable pH value under storage conditions of 5°C and shows no significant sedimentation during a 6-month storage period, making it suitable for long-term storage in low-temperature environments.

[0091] Example 4

[0092] This embodiment evaluates the differences in antibacterial properties, long-term stability, nanoparticle dispersibility, and storage conditions of different coating agent formulations based on a coating agent specifically designed for antibacterial lamp tubes and its preparation method. Specific implementation methods are as follows:

[0093] The coating formulation data for the three experiments are shown in the table below:

[0094] Table 1: Coating agent formulation table.

[0095]

[0096] 1. Preparation process

[0097] Weigh each component and mix them to form a solid-liquid mixture. After adding deionized water, use ultrasound to assist dispersion. The dispersion frequency, power, and time should be adjusted according to different experiments.

[0098] The mixture was heated and stirred at a constant temperature, and then cooled to room temperature via a water bath. During the cooling process, the pH value was dynamically adjusted to the set range using online pH monitoring.

[0099] Transfer the cooled mixture to a volumetric flask, stir, and bring to a final volume.

[0100] The homogeneous solution was tumbled and mixed using zirconia balls for 2 hours, and then impurities were filtered through a sieve to obtain a pure antibacterial agent solution.

[0101] The solution was stored in a polytetrafluoroethylene-coated container at temperatures of 25°C, 15°C, and 5°C for a period of 6 months.

[0102] 2. Antibacterial performance test

[0103] The antibacterial efficacy of the coating was tested using *Escherichia coli* and *Staphylococcus aureus*. The coating was evenly applied to the surface of the culture medium, dried, and then brought into contact with the bacteria. Antibacterial performance was assessed by measuring the diameter of the inhibition zone.

[0104] 3. Long-term stability test

[0105] The prepared coatings were stored at different storage temperatures for 6 months, and the changes in pH value, precipitation and antibacterial effect of the coatings were checked regularly.

[0106] Table 2: Experimental Results and Comparative Analysis.

[0107]

[0108] 4. Results Analysis

[0109] Antibacterial effect:

[0110] Experiment A exhibited the strongest antibacterial effect, with an inhibition zone reaching 18 mm. This was due to the high content of nano-silver oxide, which significantly enhanced the antibacterial activity of silver oxide. Experiment B showed the second strongest antibacterial effect, with an inhibition zone of 16 mm. Its higher silver oxide content and relatively lower zinc oxide content may have affected its overall antibacterial performance. Experiment C showed the weakest antibacterial effect, with an inhibition zone of 12 mm. This was due to the lowest silver oxide content and a zinc oxide content of only 0.10 wt%, resulting in a relatively poor antibacterial effect.

[0111] pH stability:

[0112] The pH value of Experiment A fluctuated slightly during storage, possibly due to the higher storage temperature causing reactions and decomposition of certain components. Experiment B showed minimal pH change, demonstrating good stability at 15°C and the ability to maintain its effectiveness for a longer period. Experiment C exhibited the most stable pH value; stored at 5°C, the pH of the coating showed almost no change, demonstrating the best long-term stability.

[0113] Sedimentation status:

[0114] Experiment A coating agent showed some precipitation during storage, possibly related to the high ratio of concentrated sulfuric acid to solvent. Experiment B showed less precipitation; the moderate acidity and solvent ratio helped suppress precipitation formation. Experiment C showed the least precipitation; due to the low-temperature storage conditions, the coating agent exhibited good stability with almost no precipitation.

[0115] Nanoparticle dispersibility:

[0116] The nanoparticles in Experiments A and B were relatively uniformly dispersed, and the higher ultrasonic dispersion time and power helped improve the dispersibility of the particles. Experiment C showed good particle dispersibility, but low-temperature storage and lower ultrasonic power may have resulted in slightly larger particles, affecting its antibacterial effect.

[0117] Comparing the experimental results, Experiment A showed the strongest antibacterial effect, but the higher storage temperature led to pH fluctuations and slight precipitation in the coating. It is suitable for short-term antibacterial use but not for long-term storage. Experiment B achieved a good balance between antibacterial performance and stability, making it suitable for general antibacterial applications and exhibiting good stability during long-term storage. Experiment C demonstrated the best stability, effectively maintaining pH stability and preventing precipitation during low-temperature storage, making it suitable for long-term storage, although its antibacterial effect was relatively weaker.

[0118] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating agent specifically for antibacterial lamp tubes, characterized in that, By weight percentage, it includes the following components: Nanoscale silver oxide: 0.25wt%-0.28wt%; Nano-sized zinc oxide: 0.10wt%-0.30wt%; Mixed alcohol solvents: 5.0wt%-12.0wt%; Titanium dioxide powder: 0.25wt%-0.28wt%; Ammonium sulfate: 14.3 wt% - 15.7 wt%; Concentrated sulfuric acid: 45.0 wt% - 50.0 wt%; Deionized water balance.

2. The coating agent specifically for antibacterial lamp tubes according to claim 1, characterized in that: Both the nano-sized silver oxide and the titanium dioxide powder are spectrally pure and reference reagent grade raw materials, and the particle size range of the nano-sized silver oxide is 10nm-50nm.

3. A method for preparing a coating agent specifically for antibacterial lamp tubes, characterized in that, include: S1. Using an electronic scale, nano-sized silver oxide, titanium dioxide powder, nano-sized zinc oxide, mixed alcohol solvent, ammonium sulfate and concentrated sulfuric acid are weighed to form a solid-liquid mixture. Deionized water is added to the solid-liquid mixture to form an initial mixture. S2. The initial mixture is heated and dissolved using a constant temperature heating device to form a dissolved mixture, and the dissolved mixture is cooled using a cooling device to form a cooled mixture. The heating and dissolving process uses ultrasonic-assisted dispersion, and the cooling process uses a combination of online pH monitoring and dynamic adjustment. S3. The cooled mixture is transferred to a volumetric flask for dilution and volume adjustment to form a homogeneous solution, wherein the dilution and volume adjustment are performed by magnetic stirring; S4. The uniform solution is placed into a sealed tumbling bottle for tumbling and mixing to form a tumbling mixture. The tumbling mixture is then filtered to remove impurities and form a pure antibacterial agent solution. Zirconia balls are used as the medium in the tumbling and mixing process. S5. The pure antibacterial agent solution is mixed and stored to form a stable and dispersed nano antibacterial agent solution.

4. The method for preparing a coating agent specifically for antibacterial lamp tubes according to claim 3, characterized in that: The electronic scale has a weighing accuracy of 0.01g, and the titanium dioxide powder includes anatase-rutile composite type, with a specific surface area ≥50m². 2 / g.

5. The method for preparing a coating agent specifically for antibacterial lamp tubes according to claim 3, characterized in that: The constant temperature heating device is a constant temperature heating stirrer, with a temperature of 80℃-120℃ and a rotation speed of 300rpm-600rpm. The cooling device is a water bath cooler, with a temperature adjustment range of 15℃-30℃. The ultrasonic-assisted dispersion has a frequency of 20kHz-40kHz and a power of 100W-300W. The cooling process includes the following steps: S21. The pH value of the cooling mixture is monitored in real time using the online pH monitoring system to generate monitoring results; S22 dynamically adds deionized water to the dissolved mixture through the dynamic adjustment to form the cooling mixture.

6. The method for preparing a coating agent specifically for antibacterial lamp tubes according to claim 3, characterized in that: The pH value of the homogeneous solution is 6-8, and the stirring speed of the magnetic stirrer is 300rpm-500rpm.

7. The method for preparing a coating agent specifically for antibacterial lamp tubes according to claim 3, characterized in that: The tumbling and mixing process takes 2 hours and the tumbling speed is 100rpm-200rpm. The diameter of the zirconia balls is 3mm-5mm. The filtration device removes impurities by filtering through a screen.

8. The method for preparing a coating agent specifically for antibacterial lamp tubes according to claim 3, characterized in that: The storage temperature is 5℃-25℃, and the storage uses a container bottle with a polytetrafluoroethylene coating on the inner wall, and the container bottle has a pressure-resistant and sealed structure.

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