An antibacterial breathable fiber silica gel material and its preparation method and application

Abstract

The present application relates to the field of medical device technology, and in particular to an antibacterial and breathable fiber silica gel material, a preparation method and application thereof; the fiber silica gel material comprises a porous silica gel matrix and a composite fiber layer covering at least a portion of the surface of the porous silica gel matrix, and the thickness ratio of the composite fiber layer to the porous silica gel matrix layer is 1 to 1.5; wherein, the raw materials of the composite fiber layer comprise: carbon fiber, sodium hydroxymethyl cellulose and trehalose; the composite fiber layer can provide sufficient carbon fiber, sufficient sodium hydroxymethyl cellulose and sufficient trehalose to effectively improve the flexibility and adsorption of the porous silica gel matrix, and increase the porosity and hydrophobicity of the porous silica gel matrix, so that the air permeability of the fiber silica gel material reaches more than 80%, and in addition, the fiber silica gel material can also improve the bactericidal performance of the overall fiber silica gel material, so that the antibacterial rate of the fiber silica gel material reaches 90%.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an antibacterial breathable fiber silica gel material and a preparation method and application thereof. Background Art

[0002] Due to its excellent flexibility and skin-friendly properties, silicone is widely used in construction, electronics and electrical, textiles, automobiles, machinery, leather and papermaking, chemical and light industry, metal and paint, medicine and healthcare and other fields; medical silicone among silicones is widely used in medical devices due to its good skin-friendly and hemostatic properties, such as respiratory masks and head-mounted corrective instruments. At present, most medical silicones have been treated with antibacterial agents. Generally, antibacterial substances are embedded in the pores of silicone to achieve the purpose of breathability and sterilization, or a layer of sterilization cloth is covered on the surface of the medical silicone.

[0003] However, in order to ensure the sterilization effect, the medical silicone generally controls the pore structure below 3nm. During the operation of the respiratory mask, it will hinder the escape of water vapor in the exhaled gas, thereby condensing a large number of water droplets in the respiratory mask, which will not only affect the comfort of the patient wearing it, but also reduce the amount of oxygen entering, affecting the patient's treatment; in addition, due to the good waterproof performance of silicone, a large number of water droplets will accumulate at the edge of the mask and are difficult to discharge from the respiratory mask. Although it is currently possible to use sterilization non-woven fabrics to wrap medical silicone to increase its air permeability, it is difficult to ensure the sterilization effect because there are mostly gaps between the non-woven fabrics and the medical silicone. Summary of the invention

[0004] The present application provides an antibacterial breathable fiber silicone material and a preparation method and application thereof to solve the following technical problem: how to improve the air permeability and bactericidal properties of medical silicone.

[0005] In the first aspect, the present application provides an antibacterial and breathable fiber silicone material, which includes a porous silicone matrix and a composite fiber layer covering at least a portion of the surface of the porous silicone matrix, wherein the thickness ratio of the composite fiber layer to the porous silicone matrix layer is 1 to 1.5; wherein the raw materials of the composite fiber layer include: carbon fiber, sodium hydroxymethyl cellulose and trehalose.

[0006] Optionally, the mass ratio of the carbon fiber, the sodium hydroxymethyl cellulose and the trehalose is 50-60:10-20:30-40.

[0007] Optionally, the length of the carbon fiber is 1 mm to 5 mm, and the diameter of the carbon fiber is 0.1 mm to 0.5 mm.

[0008] Optionally, the porosity of the composite fiber layer is ≥40%.

[0009] Optionally, the porosity of the porous silica gel matrix is ​​≥50%, and the pore size of the porous silica gel matrix is ​​≥5 nm.

[0010] Optionally, the content of antibacterial substances in the porous silica gel matrix is ​​≥10%.

[0011] In a second aspect, the present application provides a method for preparing the fiber silica gel material according to the first aspect, the method comprising:

[0012] Mixing sodium hydroxymethyl cellulose and carbon fiber to obtain a fiber mixed solution;

[0013] Immersing a porous silica gel matrix into the fiber mixture, and then performing a first static state to obtain a silica gel matrix containing a carbon fiber layer;

[0014] The silica gel matrix containing the carbon fiber layer is placed in a trehalose solution, and then subjected to a second standing and drying process to obtain a fiber silica gel material containing a composite fiber layer.

[0015] Optionally, the first standing time is 1 hour to 5 hours, and the first standing temperature is 35° C. to 45° C.

[0016] Optionally, the second standing time is 3 hours to 5 hours, and the second standing temperature is 40° C. to 50° C.

[0017] In a third aspect, the present application provides an application of an antibacterial and breathable fiber silicone material, wherein the application includes using the fiber silicone material described in the first aspect to prepare a facial covering device.

[0018] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0019] An embodiment of the present application provides an antibacterial and breathable fiber silicone material, which includes a porous silicone matrix and a composite fiber layer covering at least a portion of the surface of the porous silicone matrix, wherein the thickness ratio of the composite fiber layer to the porous silicone matrix layer is 1 to 1.5; wherein the raw materials of the composite fiber layer include: carbon fiber, sodium hydroxymethyl cellulose and trehalose. A composite fiber layer is covered on the surface of the porous silica gel substrate, and the thickness ratio of the composite fiber layer to the porous silica gel substrate layer can be 1 to 1.5, and the raw materials of the composite fiber layer can include carbon fiber, sodium hydroxymethyl cellulose and trehalose, which can provide sufficient carbon fiber, sufficient sodium hydroxymethyl cellulose and sufficient trehalose in the fiber silica gel material. Sufficient carbon fiber can effectively improve the flexibility and adsorption of the porous silica gel substrate based on the high mechanical strength and high adsorption of carbon fiber. Then, sodium hydroxymethyl cellulose is used to evenly disperse the carbon fiber, which can promote the carbon fiber to be evenly dispersed in the pore structure of the porous silica gel substrate, thereby increasing the porosity of the porous silica gel substrate. In addition, sufficient sodium hydroxymethyl cellulose can increase the bonding strength between the carbon fiber and the porous silica gel substrate, so that the carbon fiber is fixed on the porous silica gel substrate. Finally, sufficient trehalose can increase the hydrophobicity of the porous silica gel substrate. In addition, sufficient trehalose has certain bactericidal properties, which can cooperate with the bactericidal substances in the porous silica gel substrate to improve the bactericidal performance of the overall fiber silica gel material, so that the composite fiber layer can be used to improve the air permeability and bactericidal performance of the porous silica gel substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 A schematic diagram of the structure of an antibacterial breathable fiber silica gel material provided in an embodiment of the present application, wherein the middle part is a porous silica gel matrix, and the upper and lower surfaces are divided into composite fiber layers;

[0023] Figure 2 A schematic flow chart of a method for preparing an antibacterial breathable fiber silicone material provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity and should not be understood as a rigid limitation on the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within the range; for example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which applies regardless of the range; in addition, whenever a numerical range is indicated in this document, it is meant to include any cited numbers (fractions or integers) within the indicated range.

[0026] In this document, the terms including "including" and "including" mean "including but not limited to". Relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone; where A and B can be singular or plural. "At least one" means one or more, and "plurality" means two or more; "at least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items; for example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e. a and b), ac, bc, or abc, where a, b, and c can be single or plural. Unless otherwise specified, various raw materials, reagents, instruments and equipment used in this application can be purchased from the market or prepared by existing methods.

[0027] Figure 1 The structural diagram of an antibacterial breathable fiber silica gel material provided in an embodiment of the present application is exemplarily shown;

[0028] like Figure 1As shown, an embodiment of the present application provides an antibacterial breathable fiber silicone material, which includes a porous silicone matrix and a composite fiber layer covering at least a portion of the surface of the porous silicone matrix, wherein the thickness ratio of the composite fiber layer to the porous silicone matrix layer is 1 to 1.5; wherein the raw materials of the composite fiber layer include: carbon fiber, sodium hydroxymethyl cellulose and trehalose.

[0029] The thickness ratio of the composite fiber layer to the porous silica gel matrix layer may be 1, 1.1, 1.2, 1.3, 1.4 or 1.5.

[0030] It should be noted that the trehalose is generally α,α-trehalose.

[0031] In some optional embodiments, the mass ratio of the carbon fiber, the sodium hydroxymethyl cellulose and the trehalose is 50-60:10-20:30-40;

[0032] In these embodiments, the mass ratio of carbon fiber, sodium hydroxymethyl cellulose and trehalose can be 50-60:10-20:30-40, which can further promote the composite fiber layer to contain sufficient carbon fiber, sufficient sodium hydroxymethyl cellulose and sufficient trehalose, thereby effectively improving the flexibility, adsorption, porosity, hydrophobicity and bactericidal properties of the porous silica gel matrix through the composite fiber layer.

[0033] The mass ratio of the carbon fiber, the sodium hydroxymethyl cellulose and the trehalose can be 50:10:30, 50:10:35, 50:10:40, 50:15:30, 50:15:35, 50:15:40, 50:20:30, 50:20:35, 50:20:40, 55:10:30, 55:10:35, 55:1 ...5:30, 55:15:35, 55:15:40, 55:20:30, 55:20:35, 55:20:40, 55:10:30, 55:10:35, 5 5:15:30, 55:15:35, 55:15:40, 55:20:30, 55:20:35, 55:20:40, 60:10:30, 60:10:35, 60:10:40, 60:15:30, 60:15:35, 60:15:40, 60:20:30, 60:20:35 or 60:20:40.

[0034] In some optional embodiments, the length of the carbon fiber is 1 mm to 5 mm, and the diameter of the carbon fiber is 0.1 mm to 0.5 mm;

[0035] In these embodiments, the length of the carbon fiber can be 1 mm to 5 mm and the diameter of the carbon fiber can be 0.1 mm to 0.5 mm, which can enable the carbon fiber to have sufficient specific surface area. Carbon fiber with sufficient specific surface area can further improve the flexibility and adsorption of the porous silica gel matrix.

[0036] The carbon fibers may be 1 mm, 2 mm, 3 mm, 4 mm or 5 mm in length.

[0037] The diameter of the carbon fiber may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm.

[0038] In some optional embodiments, the porosity of the composite fiber layer is ≥40%;

[0039] In these embodiments, the porosity of the composite fiber layer may be ≥40%, which indicates that good pores are formed in the carbon fibers in the composite fiber layer, thereby increasing the porosity of the final fiber silica gel material.

[0040] In some optional embodiments, the porosity of the porous silica gel substrate is ≥50%, and the pore size of the porous silica gel substrate is ≥5 nm;

[0041] In these embodiments, the porosity of the porous silica gel matrix can be ≥50%, and the pore size of the porous silica gel matrix can be ≥5nm, which can enable the porous silica gel matrix to have sufficiently large pores and a sufficient number of pores. The sufficiently large pores and a sufficient number of pores can effectively accommodate a sufficient number of carbon fibers in the composite fiber layer, thereby further improving the porosity of the fiber silica gel material.

[0042] In some optional embodiments, the content of antibacterial substances in the porous silica gel matrix is ​​≥ 10%;

[0043] In these embodiments, the content of the antibacterial substance in the porous silica gel matrix can be ≥10%, thereby effectively improving the antibacterial properties of the porous silica gel matrix.

[0044] Figure 2 A schematic diagram of a process for preparing an antibacterial breathable fiber silica gel material provided in an embodiment of the present application is exemplarily shown;

[0045] Based on a general inventive concept, such as Figure 2 As shown, the present application provides a method for preparing the fiber silica gel material, the method comprising:

[0046] S1. mixing sodium hydroxymethyl cellulose and carbon fiber to obtain a fiber mixture;

[0047] S2. Immersing the porous silica gel substrate into the fiber mixture, and then allowing to stand for a first time to obtain a silica gel substrate containing a carbon fiber layer;

[0048] S3. placing the silica gel substrate containing the carbon fiber layer into the trehalose solution, and then performing a second standing and drying to obtain a fiber silica gel material containing a composite fiber layer.

[0049] This method is a method for preparing the above-mentioned fiber silicone material. The specific structure and composition of the fiber silicone material can refer to the above-mentioned embodiment. Since this method adopts part or all of the technical solutions of the above-mentioned embodiment, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiment, which will not be described one by one here.

[0050] It should be noted that by using the first and second static methods, based on the pore structure of the porous silica gel matrix, a sufficient amount of carbon fiber and trehalose components can be introduced into the porous silica gel matrix, thereby improving the air permeability and antibacterial properties of the porous silica gel matrix through the composite fiber layer.

[0051] It should be noted that the mass concentration of the trehalose solution can be 15% to 20%, preferably 20%; the solvent of the trehalose solution is distilled water.

[0052] It should be noted that the drying temperature may be 35° C. to 40° C., and the drying pressure may be ≤0.1 MPa.

[0053] In some optional embodiments, the first standing time is 1 hour to 5 hours, and the first standing temperature is 35° C. to 45° C.;

[0054] In these embodiments, the first standing time can be 1 hour to 5 hours, and the first standing temperature can be 35°C to 45°C. The first standing method can be used to prompt sodium hydroxymethyl cellulose to fix carbon fibers into the pore structure of the porous silica gel matrix to form a large number of small void structures, thereby improving the air permeability of the porous silica gel matrix.

[0055] The first standing time may be 1 h, 2 h, 3 h, 4 h or 5 h.

[0056] The first resting temperature may be 35°C, 35°C, 37°C, 38°C, 39°C, 40°C, 41°C, 42°C, 43°C, 44°C or 45°C.

[0057] In some optional embodiments, the second standing time is 3h to 5h, and the second standing temperature is 40°C to 50°C;

[0058] In these embodiments, the second standing time can be 3h to 5h, and the second standing temperature can be 40°C to 50°C. The second standing method can be used to enable sodium hydroxymethyl cellulose to fix the carbon fibers into the pore structure of the porous silica gel matrix to form a large number of small void structures, thereby improving the air permeability of the porous silica gel matrix.

[0059] The second resting time may be 3 hours, 4 hours or 5 hours.

[0060] The second standing temperature may be 40°C, 41°C, 42°C, 43°C, 44°C, 45°C, 46°C, 47°C, 48°C, 49°C or 50°C.

[0061] Based on a general inventive concept, an embodiment of the present application provides an application of an antibacterial and breathable fiber silicone material, which includes using the fiber silicone material to prepare a face covering device.

[0062] It should be noted that the face covering device includes a breathing mask, a breathing mask and a mask with a breathing valve.

[0063] This application is realized based on the above-mentioned dimensional silicone material. The specific structure and specific composition of the dimensional silicone material can refer to the above-mentioned embodiments. Since this application adopts part or all of the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0064] The present application is further described below in conjunction with specific examples. The experimental methods in the following examples that do not specify specific conditions are usually measured according to industry standards; if there are no corresponding industry standards, they are carried out according to common international standards, conventional conditions, or conditions recommended by the manufacturer. Example 1

[0065] like Figure 1 As shown, an antibacterial breathable fiber silicone material includes a porous silicone matrix and a composite fiber layer covering at least a portion of the surface of the porous silicone matrix, and the thickness ratio of the composite fiber layer to the porous silicone matrix layer is 1.2; wherein, the raw materials of the composite fiber layer include: carbon fiber, sodium hydroxymethyl cellulose and trehalose.

[0066] The mass ratio of carbon fiber, sodium hydroxymethyl cellulose and trehalose is 55:15:35.

[0067] The length of the carbon fiber is 4 mm, and the diameter of the carbon fiber is 0.4 mm.

[0068] The porosity of the composite fiber layer is ≥40%.

[0069] The porosity of the porous silica gel matrix is ​​≥50%, and the pore size of the porous silica gel matrix is ​​≥5nm.

[0070] The content of antibacterial substances in the porous silica gel matrix is ​​≥10%.

[0071] like Figure 2 As shown, a method for preparing a fiber silica gel material, the method comprising:

[0072] S1. mixing sodium hydroxymethyl cellulose and carbon fiber to obtain a fiber mixture;

[0073] S2. Immersing the porous silica gel substrate in the fiber mixture, and then allowing to stand for a first time to obtain a silica gel substrate containing a carbon fiber layer;

[0074] S3. Place the silica gel matrix containing the carbon fiber layer into the trehalose solution, and then perform a second standing and drying to obtain a fiber silica gel material containing a composite fiber layer.

[0075] The first standing time was 3 h, and the first standing temperature was 40° C.

[0076] The second standing time was 4 hours, and the second standing temperature was 45°C. Example 2

[0077] Based on the contents disclosed in Example 1, the following operations are further performed:

[0078] The thickness ratio of the composite fiber layer to the porous silica gel matrix layer is 1; wherein the raw materials of the composite fiber layer include: carbon fiber, sodium hydroxymethyl cellulose and trehalose. Example 3

[0079] Based on the contents disclosed in Example 1, the following operations are further performed:

[0080] The thickness ratio of the composite fiber layer to the porous silica gel matrix layer is 1.5; wherein the raw materials of the composite fiber layer include: carbon fiber, sodium hydroxymethyl cellulose and trehalose. Example 4

[0081] Based on the contents disclosed in Example 1, the following operations are further performed:

[0082] The mass ratio of carbon fiber, sodium hydroxymethyl cellulose and trehalose is 50:10:30.

[0083] The length of the carbon fiber is 5 mm, and the diameter of the carbon fiber is 0.1 mm. Example 5

[0084] Based on the contents disclosed in Example 1, the following operations are further performed:

[0085] The mass ratio of carbon fiber, sodium hydroxymethyl cellulose and trehalose is 60:20:40.

[0086] The length of the carbon fiber is 1 mm, and the diameter of the carbon fiber is 0.5 mm. Example 6

[0087] Based on the contents disclosed in Example 1, the following operations are further performed:

[0088] The first standing time was 5 h, and the first standing temperature was 35° C.

[0089] The second standing time was 5 h, and the second standing temperature was 40°C. Example 7

[0090] Based on the contents disclosed in Example 1, the following operations are further performed:

[0091] The first standing time was 1 hour, and the first standing temperature was 45°C.

[0092] The second standing time was 3 h, and the second standing temperature was 50°C.

[0093] Comparative Example 1

[0094] Based on the contents disclosed in Example 1, the following operations are further performed:

[0095] No composite fiber layer is used.

[0096] Comparative Example 2

[0097] Based on the contents disclosed in Example 1, the following operations are further performed:

[0098] The thickness ratio of the composite fiber layer to the porous silica gel matrix layer is 0.5.

[0099] Comparative Example 3

[0100] Based on the contents disclosed in Example 1, the following operations are further performed:

[0101] The thickness ratio of the composite fiber layer to the porous silica gel matrix layer is 2.0.

[0102] Comparative Example 4

[0103] Based on the contents disclosed in Example 1, the following operations are further performed:

[0104] The mass ratio of carbon fiber, sodium hydroxymethyl cellulose and trehalose is 40:5:25.

[0105] Comparative Example 5

[0106] Based on the contents disclosed in Example 1, the following operations are further performed:

[0107] The mass ratio of carbon fiber, sodium hydroxymethyl cellulose and trehalose is 80:25:50.

[0108] Comparative Example 6

[0109] Based on the contents disclosed in Example 1, the following operations are further performed:

[0110] The first standing time was 0.5 h, and the first standing temperature was 60° C.

[0111] The second standing time was 2 h, and the second standing temperature was 70°C.

[0112] Comparative Example 7

[0113] Based on the contents disclosed in Example 1, the following operations are further performed:

[0114] The first standing time was 6 hours, and the first standing temperature was 25°C.

[0115] The second standing time was 8 h, and the second standing temperature was 20°C.

[0116] Related experiments and effect data:

[0117] The silica gel materials obtained in various embodiments and comparative examples were collected respectively, and the air permeability and antibacterial performance were tested.

[0118] The air permeability is measured using water vapor as the detection gas using an MC3 gas permeability tester.

[0119] The antibacterial performance test is to inoculate a large number of E. coli on the surface of each silica gel material, and infer the antibacterial rate of the silica gel material based on the survival rate of E. coli. The data results are shown in Table 1.

[0120]

[0121] As can be seen from Table 1, an antibacterial and breathable fiber silica gel material provided in an embodiment of the present application, the composite fiber layer in the fiber silica gel material can provide sufficient carbon fiber, sufficient sodium hydroxymethyl cellulose and sufficient trehalose, effectively improving the flexibility and adsorption of the porous silica gel matrix, and increasing the porosity and hydrophobicity of the porous silica gel matrix, so that the air permeability of the fiber silica gel material reaches more than 80%. In addition, the fiber silica gel material can also improve the bactericidal performance of the overall fiber silica gel material, so that the antibacterial rate of the fiber silica gel material reaches 90%.

[0122] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be apparent to those skilled in the art that various modifications to these embodiments are possible, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features applied for by the present application.

Claims

1. An antibacterial breathable fiber silica gel material, characterized in that: The fiber silica gel material comprises a porous silica gel matrix and a composite fiber layer covering at least part of the surface of the porous silica gel matrix, wherein the thickness ratio of the composite fiber layer to the porous silica gel matrix is ​​1 to 1.5; wherein the raw materials of the composite fiber layer comprise: carbon fiber, sodium hydroxymethyl cellulose and trehalose; and the mass ratio of the carbon fiber, the sodium hydroxymethyl cellulose and the trehalose is 50 to 60:10 to 20:30 to 40; The preparation method of the fiber silica gel material comprises: Mixing sodium hydroxymethyl cellulose and carbon fiber to obtain a fiber mixed solution; Immersing a porous silica gel matrix into the fiber mixture, and then performing a first static state to obtain a silica gel matrix containing a carbon fiber layer; Putting the silica gel matrix containing the carbon fiber layer into the trehalose solution, and then performing a second standing and drying to obtain a fiber silica gel material containing a composite fiber layer; The first standing time is 1 hour to 5 hours, and the first standing temperature is 35° C. to 45° C.; The second standing time is 3 hours to 5 hours, and the second standing temperature is 40° C. to 50° C.

2. The fiber silica gel material according to claim 1, characterized in that: The length of the carbon fiber is 1 mm to 5 mm, and the diameter of the carbon fiber is 0.1 mm to 0.5 mm.

3. The fiber silica gel material according to claim 1, characterized in that: The porosity of the composite fiber layer is ≥40%.

4. The fiber silica gel material according to claim 1, characterized in that: The porosity of the porous silica gel matrix is ​​≥50%, and the pore size of the porous silica gel matrix is ​​≥5nm.

5. The fiber silica gel material according to claim 4, characterized in that: The content of antibacterial substances in the porous silica gel matrix is ​​≥10%.

6. An application of an antibacterial breathable fiber silica gel material, characterized in that: The application includes using the fiber silicone material as described in any one of claims 1 to 5 to prepare a face covering device.

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