Glass antibacterial agent, preparation method and application thereof, and antibacterial glass paste

Abstract

The application discloses a glass antibacterial agent and a preparation method and application thereof, and antibacterial glass slurry. The glass antibacterial agent comprises a glass base and an antibacterial metal oxide; the antibacterial metal oxide is ZnO and / or CuO; the content of the antibacterial metal oxide is 12wt%-35wt%; the glass base is one or more of silicate glass, borate glass, borosilicate glass and phosphate glass; wherein, the glass base comprises an alkaline earth metal oxide; the content of the alkaline earth metal oxide is 4wt%-20wt%. The glass antibacterial agent in the application has good stability, can be stored at room temperature for 3-6 months without sedimentation and agglomeration, has good dispersing performance in paint, and can make the paint have excellent antibacterial performance; meanwhile, the preparation method of the glass antibacterial agent in the application is simple and safe, is suitable for large-scale production, and has wide application prospect in the fields of paint and fiber.

Description

TECHNICAL FIELD

[0001] The present application relates to a glass antibacterial agent, a preparation method and application thereof, and an antibacterial glass slurry. BACKGROUND

[0002] With the continuous development of science and technology, people's requirements for environmental quality are constantly improving. Especially in today's context, people increasingly value environmental safety issues and are eager to create a comfortable and safe living environment. Therefore, the research and application of antibacterial materials usher in a period of vigorous development, and antibacterial materials will usher in a broader and larger market.

[0003] Antibacterial materials are divided into organic antibacterial agents and inorganic antibacterial agents. Each type of antibacterial agent has advantages and disadvantages, and the specific application scenario of antibacterial materials determines which type of antibacterial agent to use. Inorganic antibacterial agents have good thermal stability, high safety performance, no environmental pollution, and relatively safe production process and low cost. Therefore, inorganic antibacterial agents are used in application scenarios with high safety requirements and high product forming temperature.

[0004] As one of inorganic antibacterial agents, the biggest application feature of glass antibacterial agent is high temperature resistance (glass antibacterial agent can reach a use temperature of 600℃), and it has low cost (the raw materials are widely available and the production process is mature), and high safety. Glass antibacterial agent, as an important branch of inorganic antibacterial agents, is used in plastic products, coatings and fibers. Glass antibacterial agent is used in coatings, and there are many types of coatings, most of which have a certain viscosity. When glass antibacterial agent is added to the coating in the form of powder, it is difficult to disperse in the coating, which affects the appearance and antibacterial properties of the final product.

[0005] Therefore, it is urgent to provide a glass antibacterial agent that can be prepared into an antibacterial glass slurry, easily dispersed in a coating, and has excellent antibacterial effect and stability. SUMMARY

[0006] The present application provides a glass antibacterial agent, a preparation method and application thereof, and an antibacterial glass slurry to solve the problem of poor dispersibility of powder antibacterial agents in high molecular substrates in the prior art. The glass antibacterial agent of the present application has good stability, can be stored at room temperature for 3-6 months without sedimentation and agglomeration, has good dispersibility in coatings, and can make the coating have excellent antibacterial properties. The preparation method of the glass antibacterial agent of the present application is simple and safe, suitable for large-scale production, and has a wide application prospect in the field of coatings and fibers.

[0007] The present application solves the above technical problems through the following technical solutions.

[0008] One of the technical solutions of the present application is a glass antibacterial agent, which comprises a glass matrix and an antibacterial metal oxide.

[0009] the antibacterial metal oxide is ZnO and / or CuO; the content of the antibacterial metal oxide is 12wt%-35wt%; wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent;

[0010] the glass matrix is one or more of silicate glass, borate glass, borosilicate glass and phosphate glass;

[0011] the glass matrix comprises an alkaline earth metal oxide; the content of the alkaline earth metal oxide is 4wt%-20wt%; wt% refers to the mass percentage of the alkaline earth metal oxide in the glass antibacterial agent;

[0012] when the glass matrix is borosilicate glass, the content of B2O3 is 14wt%-25wt%, and the alkaline earth metal oxide comprises MgO;

[0013] when the glass matrix is phosphate glass, the content of P2O5 is 40wt%-55wt%, and the alkaline earth metal oxide comprises CaO and BaO.

[0014] In the present application, the antibacterial metal oxide is preferably ZnO or CuO.

[0015] In the present application, the content of the antibacterial metal oxide is preferably 15wt%-35wt%; for example, 20wt%-30wt%; for example, 25wt%; wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent.

[0016] In the present application, the glass matrix is preferably borosilicate glass or phosphate glass.

[0017] In the present application, the content of the alkaline earth metal oxide is preferably 5wt%-20wt%; for example, 8wt%-15wt%; for example, 10wt%; wt% refers to the mass percentage of the alkaline earth metal oxide in the glass antibacterial agent.

[0018] when the glass matrix is borosilicate glass and the alkaline earth metal oxide comprises MgO, the content of MgO is preferably 5wt%-15wt%; wt% refers to the mass percentage of MgO in the glass antibacterial agent.

[0019] when the glass matrix is phosphate glass and the alkaline earth metal oxide comprises CaO and BaO, the content of CaO is preferably 5wt%-12wt%, for example, 8wt%-10wt%; wt% refers to the mass percentage of CaO in the glass antibacterial agent; the content of BaO is preferably 5wt%-10wt%, for example, 7wt%-8wt%; wt% refers to the mass percentage of BaO in the glass antibacterial agent.

[0020] In the present application, the glass matrix can comprise alkali metal oxides.

[0021] The alkali metal oxides can be conventional in the art, such as one or more of Li2O, Na2O and K2O; preferably Na2O and / or K2O; more preferably Na2O, or Na2O and K2O.

[0022] In the present application, the glass antibacterial agent preferably comprises borosilicate glass and antibacterial metal oxides.

[0023] The borosilicate glass preferably comprises the following components in the following amounts:

[0024] 14wt% to 25wt% B2O3;

[0025] 20wt% to 45wt% SiO2;

[0026] 4wt% to 10wt% alkali metal oxides;

[0027] 5wt% to 15wt% alkaline earth metal oxides;

[0028] 0wt% to 10wt% Al2O3;

[0029] wt% refers to the mass percentage of each component in the glass antibacterial agent.

[0030] Preferably, the content of B2O3 is 18wt% to 22wt%.

[0031] Preferably, the content of SiO2 is 30wt% to 37wt%.

[0032] Preferably, the content of alkali metal oxides is 6wt% to 8wt%. The alkali metal oxides are preferably Na2O.

[0033] Preferably, the content of alkaline earth metal oxides is 8wt% to 10wt%. The alkaline earth metal oxides are preferably MgO.

[0034] Preferably, the content of Al2O3 is 5wt% to 8wt%.

[0035] The content of antibacterial metal oxides is preferably 15wt% to 35wt%, more preferably 20wt% to 30wt%. The antibacterial metal oxides are preferably ZnO.

[0036] In the present application, the glass antibacterial agent preferably comprises phosphate glass and antibacterial metal oxides.

[0037] The phosphate glass preferably comprises the following components in the following amounts:

[0038] 40wt% to 55wt% P2O5;

[0039] 10wt% to 20wt% alkali metal oxide;

[0040] 10wt% to 20wt% alkaline earth metal oxide;

[0041] wt% refers to the mass percentage of each component in the glass antibacterial agent.

[0042] Preferably, the content of P2O5 is 45wt% to 50wt%.

[0043] Preferably, the content of alkali metal oxide is 15wt%. The alkali metal oxide is preferably Na2O and K2O. The content of Na2O is preferably 6wt% to 15wt%, for example 7wt% to 10wt%. The content of K2O is preferably 3wt% to 5wt%, for example 4wt%.

[0044] Preferably, the content of alkaline earth metal oxide is 15wt%.

[0045] The alkaline earth metal oxide is preferably CaO and BaO. The content of CaO is preferably 5wt% to 12wt%, more preferably 8wt% to 10wt%. The content of BaO is preferably 5wt% to 10wt, more preferably 7wt% to 8wt.

[0046] The content of antibacterial metal oxide is preferably 10wt% to 30wt%, more preferably 15wt% to 25wt%, for example 20wt%. The antibacterial metal oxide is preferably CuO.

[0047] The second technical solution of the present application is a preparation method of the glass antibacterial agent as described above, which comprises the following steps: mixing the components of the glass antibacterial agent, and then sequentially going through melting, quenching and crushing to obtain the glass antibacterial agent.

[0048] In the present application, the mixing can be conventional in the art, preferably uniform mixing.

[0049] In the present application, the temperature of melting can be conventional in the art, for example 1000 to 1300℃, preferably 1100 to 1200℃.

[0050] The time of melting can be conventional in the art, for example 30 to 120min, preferably 60 to 90min, more preferably 70min to 80min.

[0051] In the present application, the quenching generally refers to quenching the molten glass liquid directly in water, or quenching the molten glass liquid by the roller connected with cooling water.

[0052] In the present application, the pulverizing method can be conventional in the art, and is generally ball milling, preferably dry ball milling.

[0053] In the present application, the pulverizing time can be conventional in the art, for example, 8-16 h, and for example, 12 h.

[0054] In the present application, after the pulverizing, the glass antibacterial agent powder can be obtained. The particle size D 98 of the glass antibacterial agent powder is preferably 60-100 μm.

[0055] The third technical solution of the present application is the use of the glass antibacterial agent as described above in the preparation of a resin product or an antibacterial glass slurry.

[0056] In the present application, the resin product can be conventional in the art, for example, PET.

[0057] The fourth technical solution of the present application is an antibacterial glass slurry comprising the glass antibacterial agent as described above and a solvent.

[0058] In the present application, the solvent can be conventional in the art, for example, one or more of deionized water, methanol, ethanol, ethylene glycol, isopropyl alcohol and ethyl acetate; and is preferably deionized water.

[0059] In the present application, the solid content of the antibacterial glass slurry can be 10wt%-60wt%, for example, 20wt%-40wt%. The solid content of the antibacterial glass slurry can be generally understood by those skilled in the art as the mass percentage of the glass antibacterial agent in the antibacterial glass slurry being 10wt%-60wt%, for example, 20wt%-40wt%.

[0060] The mass ratio of the glass antibacterial agent to the solvent is preferably 1:(0.66-9), for example, 10:90 or 60:40.

[0061] In the present application, the particle size D 98 of the glass antibacterial agent powder in the antibacterial glass slurry can be 1.5-5 μm.

[0062] In the present application, the preparation method of the antibacterial glass slurry can be conventional in the art, and preferably comprises the following preparation steps: mixing the glass antibacterial agent as described above and the solvent, and sand milling to obtain the antibacterial glass slurry.

[0063] The mixing can be conventional in the art, and is preferably uniform mixing.

[0064] The sanding can be conventional in the art, for example, using a sander, which can have a rotation speed of 1900-2500 rpm / min, for example, 2000-2200 rpm / min. The sanding time can be 4-12 h, for example, 6-10 h, and for example, 8 h.

[0065] The fifth technical solution of the present application is the use of the antibacterial glass slurry as described above in a fiber product or a coating product.

[0066] In the present application, the coating product can be conventional in the art, for example, a polyurethane coating.

[0067] In the present application, the fiber product and the coating product can be applied in various fields such as construction, clothing, and home decoration.

[0068] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, i.e., to obtain various preferred examples of the present application.

[0069] The reagents and raw materials used in the present application are commercially available.

[0070] The positive progress effect of the present application is that:

[0071] (1) The glass antibacterial agent in the present application has good dispersibility in plastics and substrates, and can achieve high-efficiency antibacterial with less addition amount. At the same time, the antibacterial glass slurry in the present application has good stability and can remain stable in the solvent for 3-6 months without agglomeration.

[0072] (2) The preparation method of the present application is simple and suitable for large-scale production.

[0073] (3) The antibacterial coating prepared by using the antibacterial glass slurry in the present application has a wide application field, especially in the fields of fibers and coatings. DETAILED DESCRIPTION

[0074] The present application will be further described by way of examples, but the present application is not limited in the scope of the examples. The experimental methods in the following examples, if not specified, are selected according to conventional methods and conditions, or according to the instructions of the goods.

[0075] Example 1

[0076] The raw materials were mixed according to the composition of each oxide in Example 1 (see Table 1-1 for the components and their contents), and then placed in a corundum crucible and melted at a certain temperature for a certain time (see Table 2 for the melting temperature and time); after the melting was completed, the glass liquid was poured into water for quenching, and the glass slag was obtained; the glass slag was dried at 120°C, and then ball-milled in a ball mill for a certain time (see Table 2 for the ball-milling time), to obtain glass antibacterial agent powder of a target size (see Table 2 for the particle size D 98 after ball-milling); the glass antibacterial agent powder and deionized water were mixed uniformly according to a certain proportion (see Table 2 for the slurry solid content), and then sand-milled in a sand mill at a certain speed for a certain time (see Table 2 for the sand-milling speed and time), to obtain antibacterial glass slurry of a target size (see Table 2 for the initial particle size).

[0077] Examples 2-4 and Comparative Examples 1-3

[0078] Except for the parameters in Table 1-1 and Table 2, the others are the same as in Example 1.

[0079] Examples 5-8 and Comparative Examples 4-6

[0080] Except for the parameters in Table 1-2 and Table 2, the others are the same as in Example 1.

[0081] Table 1-1

[0082] B2O3 SiO2 Na2O ZnO MgO Al2O3 Example 1 14.00 20.00 6.00 35.00 15.00 10.00 Example 2 18.00 30.00 4.00 30.00 10.00 8.00 Example 3 22.00 37.00 8.00 20.00 8.00 5.00 Example 4 25.00 45.00 10.00 15.00 5.00 0.00 Comparative Example 1 10.00 15.00 5.00 55.00 7.00 8.00 Comparative Example 2 15.00 60.00 5.00 10.00 5.00 5.00 Comparative Example 3 40.00 15.00 10.00 30.00 5.00 0.00

[0083] Table 1-2

[0084] P2O5 CaO BaO Na2O K2O CuO Example 5 55.00 5.00 5.00 15.00 5.00 15.00 Example 6 50.00 8.00 7.00 10.00 5.00 20.00 Example 7 45.00 10.00 10.00 6.00 4.00 25.00 Example 8 40.00 12.00 8.00 7.00 3.00 30.00 Comparative Example 4 60.00 5.00 0.00 5.00 5.00 25.00 Comparative Example 5 30.00 12.00 8.00 15.00 5.00 30.00 Comparative Example 6 60.00 10.00 5.00 10.00 5.00 10.00

[0085] Table 2

[0086]

[0087]

[0088] Effect Examples

[0089] 1. Stability test:

[0090] The antibacterial glass slurries in the above examples and comparative examples were respectively placed for 3 months and 6 months, and the particle size D 50 and the particle size D 98 were tested by a laser particle size analyzer to determine the stability of the antibacterial glass slurry, and the results are shown in Table 3.

[0091] 2. Antibacterial test:

[0092] The antibacterial glass paste in the above examples and comparative examples was added into the water-based polyurethane coating according to a certain amount (see the amount in Table 3), stirred and mixed uniformly, and then coated on the surface of a PET film, and dried in an oven at 80°C to obtain an antibacterial coating; and the antibacterial property of the antibacterial coating was evaluated, which was tested according to GB / T 31402-2015 Plastic Surface Antimicrobial Performance Test Method, and the results are shown in Table 3.

[0093] Table 3

[0094]

[0095]

[0096] From the above table, it can be seen that:

[0097] In the glass antibacterial agent component of Comparative Example 1, the content of ZnO was too high, and the content of B2O3, an oxide of the glass component, was too low, resulting in the failure to form glass finally;

[0098] In the glass antibacterial agent component of Comparative Example 2, the content of antibacterial metal oxide ZnO was too low, although the prepared antibacterial glass paste was stable and had no abnormalities compared with the examples, but the antibacterial property was lower than that of Examples 1-4;

[0099] In the glass antibacterial agent component of Comparative Example 3, the content of B2O3 was too high, although the prepared antibacterial glass paste had no abnormalities in antibacterial property, but the stability of the antibacterial glass paste itself was poor, and the particle size increased with the extension of the storage time;

[0100] In the glass antibacterial agent component of Comparative Example 4, the content of P2O5 was too high, and the content of alkaline earth metal was too low, resulting in serious crystallization of the glass, which was milky white;

[0101] In the glass antibacterial agent component of Comparative Example 5, the content of P2O5 was too low, although the prepared antibacterial glass paste had no abnormalities in antibacterial property, but the stability of the antibacterial glass paste itself was poor, and the particle size increased with the extension of the storage time;

[0102] In the glass antibacterial agent component of Comparative Example 6, the content of antibacterial metal oxide CuO was too low, although the prepared antibacterial glass paste had no abnormalities in stability compared with Examples 5-8, but the antibacterial property was lower than that of Examples 5-8.

[0103] In addition, the inventors found through a large number of experimental researches that:

[0104] When the glass matrix is borosilicate glass, the selection of alkaline earth metal oxide including MgO, in cooperation with the components and contents of alkali metal oxide and the like, can realize that the prepared antibacterial glass paste has good antibacterial property and stability.

[0105] In the components of the glass antibacterial agent, when the glass base is a phosphate glass, the alkali earth metal oxides including CaO and BaO are selected to be coordinated with the components and contents such as alkali metal oxides, so that the prepared antibacterial glass paste has good antibacterial property and stability.

Claims

1. An antibacterial glass paste, characterized by, The antibacterial glass paste comprises a glass antibacterial agent and a solvent; The solid content of the antibacterial glass paste is 10wt%-60wt%. The particle size D of the glass antibacterial agent powder in the antibacterial glass paste is 1.5-5 μm. 98 1.5-5 μm. The glass antibacterial agent and the solvent are mixed and sand ground to obtain the antibacterial glass paste. The glass antibacterial agent comprises a glass matrix and an antibacterial metal oxide. When the glass matrix is borosilicate glass, the antibacterial metal oxide is ZnO, and the content of the antibacterial metal oxide is 15wt%-35wt%, wherein wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent. The borosilicate glass comprises the following components with the following contents: 14wt%-25wt% B2O3; 20wt%-45wt% SiO2; 4wt%-10wt% alkali metal oxide; 5wt%-15wt% alkaline earth metal oxide; 0wt%-10wt% Al2O3; wt% refers to the mass percentage of each component in the glass antibacterial agent; The alkaline earth metal oxide is MgO, and the alkali metal oxide is Na2O. When the glass matrix is phosphate glass, the antibacterial metal oxide is CuO, and the content of the antibacterial metal oxide is 15wt%-30wt%, wherein wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent. The phosphate glass comprises the following components with the following contents: 40wt%-55wt% P2O5; 10wt%-20wt% alkali metal oxide; 10wt%-20wt% alkaline earth metal oxide; wt% refers to the mass percentage of each component in the glass antibacterial agent; The alkali metal oxide is Na2O and K2O; the content of Na2O is 6wt%-15wt%, and the content of K2O is 3wt%-5wt%; The alkaline earth metal oxide is CaO and BaO; the content of CaO is 5wt%-12wt%, and the content of BaO is 5wt%-10wt. The preparation method of the glass antibacterial agent comprises the following steps: mixing the components of the glass antibacterial agent, and then sequentially performing melting, quenching and crushing to obtain the glass antibacterial agent; the melting temperature is 1000-1300℃, and the crushing mode is ball milling.

2. The antimicrobial glass paste of claim 1, wherein, The antibacterial metal oxide is ZnO, and the content of the antibacterial metal oxide is 15wt%-35wt%, wherein wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent.

3. The antimicrobial glass paste of claim 2, wherein, The antibacterial metal oxide is ZnO, and the content of the antibacterial metal oxide is 20wt%-30wt%, wherein wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent.

4. The antimicrobial glass paste of claim 3, wherein, The antibacterial metal oxide is ZnO, and the content of the antibacterial metal oxide is 25wt%, wherein wt% refers to the mass percentage of the antibacterial metal oxide in the glass antibacterial agent.

5. The antimicrobial glass paste of claim 1, wherein, When the glass matrix is phosphate glass and the alkaline earth metal oxide comprises CaO and BaO, the content of CaO is 8wt%-10wt%, wherein wt% refers to the mass percentage of CaO in the glass antibacterial agent.

6. The antimicrobial glass paste of claim 1, wherein, The glass base is phosphate glass, the content of BaO is 7 wt%-8 wt% when the alkali earth metal oxide includes CaO and BaO, and wt% refers to the mass percentage of BaO in the glass antibacterial agent.

7. The antimicrobial glass paste of claim 1, wherein, The content of B2O3 is 18 wt%-22 wt% when the glass base is borosilicate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

8. The antimicrobial glass paste of claim 1, wherein, The content of SiO2 is 30 wt%-37 wt% when the glass base is borosilicate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

9. The antimicrobial glass paste of claim 1, wherein, The content of alkali metal oxide is 6 wt%-8 wt% when the glass base is borosilicate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

10. The antimicrobial glass paste of claim 1, wherein, The content of alkali earth metal oxide is 8 wt%-10 wt% when the glass base is borosilicate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

11. The antimicrobial glass paste of claim 1, wherein, The content of Al2O3 is 5 wt%-8 wt% when the glass base is borosilicate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

12. The antimicrobial glass paste of claim 1, wherein, The content of antibacterial metal oxide is 20 wt%-30 wt% when the glass base is borosilicate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

13. The antimicrobial glass paste of claim 1, wherein, The content of P2O5 is 45 wt%-50 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

14. The antimicrobial glass paste of claim 1, wherein, The content of alkali metal oxide is 15 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

15. The antimicrobial glass paste of claim 1, wherein, The content of Na2O is 7 wt%-10 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

16. The antimicrobial glass paste of claim 1, wherein, The content of K2O is 4 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

17. The antimicrobial glass paste of claim 1, wherein, The content of CaO is 8 wt%-10 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

18. The antimicrobial glass paste of claim 1, wherein, The content of BaO is 7 wt%-8 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

19. The antimicrobial glass paste of claim 1, wherein, The content of antibacterial metal oxide is 15 wt%-25 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

20. The antimicrobial glass paste of claim 19, wherein, The content of antibacterial metal oxide is 20 wt% when the glass base is phosphate glass, and wt% refers to the mass percentage of each component in the glass antibacterial agent.

21. The antimicrobial glass paste of claim 1, wherein, The preparation method of the glass antibacterial agent satisfies one or more of the following conditions I-V: I, the temperature of melting is 1100-1200 ℃; II, the time of melting is 30-120 min; III, the way of crushing is ball milling; IV, the time of crushing is 8-16 h; V, after the crushing, the powder of the glass antibacterial agent is obtained.

22. The antimicrobial glass paste of claim 1, wherein, The preparation method of the glass antibacterial agent satisfies one or more of the following conditions I-III: I. The melting time is 60-90 min; II. The pulverizing method is dry ball milling; III. The pulverizing time is 12 h; IV, the particle size D of the powder 98 is 60 to 100 μm.

23. The antimicrobial glass paste of claim 22, wherein, The melting time is 70-80 min.

24. The antimicrobial glass paste of claim 1, wherein, The antibacterial glass slurry satisfies one or more of the following conditions ①-④: ①. The solvent is one or more of deionized water, methanol, ethanol, ethylene glycol, isopropyl alcohol, and ethyl acetate; ②. The solid content of the antibacterial glass slurry is 20-40 wt%; ③. The mass ratio of the glass antibacterial agent to the solvent is 1:(0.66-9); ④. The sand milling is performed using a sand mill.

25. The antimicrobial glass paste of claim 1, wherein, The antibacterial glass slurry satisfies one or both of the following conditions ①-②: ①. The solvent is deionized water; ②. The mass ratio of the glass antibacterial agent to the solvent is 10:90 or 60:

40.

26. The antimicrobial glass paste of claim 24, wherein, The rotation speed of the sand mill is 1900-2500 rpm / min.

27. The antimicrobial glass paste of claim 26, wherein, The rotation speed of the sand mill is 2000-2200 rpm / min.

28. The antimicrobial glass paste of claim 1, wherein, The sand milling time is 4-12 h.

29. The antimicrobial glass paste of claim 28, wherein, The sand milling time is 6-10 h.

30. Use of the antibacterial glass slurry according to any one of claims 1-29 in a fiber product or a coating product.

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