Membrane material and preparation method therefor and application thereof

Abstract

The present application provides a membrane material and a preparation method therefor and an application thereof. The membrane material comprises a thermoplastic polyurethane electrospun membrane and vancomycin hydrochloride modified carbon nanotubes compounded on the thermoplastic polyurethane electrospun membrane. The vancomycin hydrochloride modified carbon nanotubes are prepared from the following raw materials in parts by weight: 8-12 parts of a carbon nanotube, 1.8-2.2 parts of vancomycin hydrochloride, 95-110 parts of morpholineethanesulfonic acid, 380-420 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, and 180-220 parts of N-hydroxysuccinimide. The membrane material achieves two effects of absorbing sunlight and converting the sunlight into heat energy and resisting bacteria, the temperature rise value is 59.15-59.17°C within 20 minutes, the temperature difference is 24.09-24.1°C within 20 minutes, and the bacteriostasis rate (staphylococcus aureus) is 97-98%.

Description

A membrane material and its preparation method and application Technical Field

[0001] The present application relates to the technical field of composite materials, for example, a membrane material and a preparation method and application thereof. Background Art

[0002] Warmth, safety, and protection are crucial for winter clothing. CN103203906A discloses a double-sided pearl velvet winter clothing fabric, comprising an outer pearl velvet fabric layer, an intermediate windproof fabric layer disposed on the inner surface of the outer pearl velvet fabric layer, and an inner pearl velvet fabric layer disposed on the inner surface of the intermediate windproof fabric layer. The outer pearl velvet fabric layer comprises an outer bottom yarn layer and an outer velvet yarn layer, while the inner pearl velvet fabric layer comprises an inner bottom yarn layer and an inner velvet yarn layer. The outer velvet yarn layer and the inner velvet yarn layer utilize yarns of different colors, providing excellent warmth and windproof properties. The front and back sides have the same style but different colors, allowing for reversible wear. CN107757004A discloses a clothing fabric comprising an outer layer, an interlayer, and a bottom layer, characterized in that the outer layer is a silk layer, the interlayer is a wool knitted layer, and the bottom layer is a non-woven fabric lining layer. The outer layer, middle layer and bottom layer are stacked and quilted into one in sequence. The outer silk layer is moisture-absorbent, easy to dry and comfortable; the interlayer wool knitted layer is thick and wear-resistant, suitable for winter; the bottom non-woven fabric lining layer is wrinkle-resistant, but has poor antibacterial properties.

[0003] Thermoplastic polyurethane (TPU) films are commonly used in clothing fabrics, and it is necessary to give the fabrics multiple functions such as warmth retention and antibacterial properties. Therefore, the development of a film material with both warmth retention and antibacterial properties for the preparation of clothing fabrics is an urgent problem to be solved in the field.

[0004] Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The present application provides a membrane material, which can solve the problems of warmth preservation and antibacterial properties of winter clothing materials.

[0007] In a first aspect, the present application provides a membrane material, comprising a thermoplastic polyurethane electrospun membrane and vancomycin hydrochloride-modified carbon nanotubes composited on the thermoplastic polyurethane electrospun membrane, wherein the raw materials for preparing the vancomycin hydrochloride-modified carbon nanotubes include, by weight: 8-12 parts of carbon nanotubes, 1.8-2.2 parts of vancomycin hydrochloride, 95-110 parts of morpholineethanesulfonic acid, 380-420 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, and 180-220 parts of N-hydroxysuccinimide.

[0008] In one embodiment, the weight of the carbon nanotubes is 8-12 parts, for example, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, and specific values ​​between the above points. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific points included in the range.

[0009] In one embodiment, the weight portion of the vancomycin hydrochloride is 1.8-2.2 parts, for example, 1.8 parts, 1.9 parts, 2 parts, 2.1 parts, 2.2 parts, and specific values ​​between the above points. Due to space limitations and for the sake of brevity, this application no longer exhaustively lists the specific points included in the range.

[0010] In one embodiment, the weight portion of the morpholineethanesulfonic acid is 95-110 parts, for example, it can be 95 parts, 98 parts, 100 parts, 105 parts, 110 parts, and specific values ​​between the above points. Due to space limitations and for the sake of brevity, this application no longer exhaustively lists the specific points included in the range.

[0011] In one embodiment, the weight of the 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride is 380-420 parts, for example, it can be 380 parts, 390 parts, 400 parts, 410 parts, 420 parts, and specific points between the above points. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific points included in the range.

[0012] In one embodiment, the weight of the N-hydroxysuccinimide is 180-220 parts, for example, it can be 180 parts, 190 parts, 200 parts, 210 parts, 220 parts, and specific values ​​between the above points. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific points included in the range.

[0013] The minimum inhibitory concentration of carbon nanotubes is 25-50 g / mL, while that of vancomycin hydrochloride-modified carbon nanotubes is 0.1-1 mg / mL, resulting in the membrane material having excellent antibacterial properties. In principle, the vancomycin hydrochloride-modified carbon nanotube membrane exhibits superior antibacterial properties, primarily due to the secondary sterilization function of the vancomycin hydrochloride-modified carbon nanotubes. The longitudinal dimensions of the carbon nanotubes are on the nanometer scale, while the axial dimensions are on the micrometer scale. Some bacteria land radially on the modified carbon nanotubes and are killed by the carbon nanotubes, while bacteria land axially on the vancomycin hydrochloride are killed by the vancomycin hydrochloride, resulting in the membrane material having superior antibacterial properties. Carbon nanotubes easily aggregate, but those modified with vancomycin hydrochloride and subjected to ultrasound make them easily dispersed and evenly distributed on the TPU surface, resulting in a large specific surface area and excellent heat preservation and thermal storage properties.

[0014] In one embodiment, the mass ratio of the thermoplastic polyurethane electrospinning membrane to the vancomycin hydrochloride modified carbon nanotubes is 100:(1-3).

[0015] In one embodiment, the raw materials for preparing the membrane material further include 380-420 parts by weight of a solvent.

[0016] In one embodiment, the weight of the solvent is 380-420, for example, it can be 380, 390, 400, 410, 420, and specific values ​​between the above points. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific points included in the range.

[0017] In one embodiment, the solvent includes any one or a combination of at least two of N,N-dimethylformamide, water or tetrahydrofuran.

[0018] In a second aspect, the present application provides a method for preparing the membrane material according to the first aspect, the preparation method comprising:

[0019] S1: mixing carbon nanotubes, vancomycin hydrochloride, morpholineethanesulfonic acid, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, and N-hydroxysuccinimide to obtain vancomycin hydrochloride-modified carbon nanotubes; and electrospinning thermoplastic polyurethane to obtain a thermoplastic polyurethane electrospun membrane.

[0020] S2: mixing the vancomycin hydrochloride modified carbon nanotubes obtained in step S1 with the thermoplastic polyurethane electrospinning membrane, and performing ultrasound to obtain the membrane material.

[0021] In one embodiment, the preparation method specifically comprises:

[0022] (1) mixing carbon nanotubes and a solvent, and performing ultrasound treatment to obtain a carbon nanotube dispersion; mixing thermoplastic polyurethane with the solvent, and performing stirring and electrostatic spinning to obtain a thermoplastic polyurethane electrospun membrane;

[0023] (2) mixing the carbon nanotube dispersion obtained in step (1), vancomycin hydrochloride, morpholineethanesulfonic acid, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, and N-hydroxysuccinimide, stirring, and drying to obtain vancomycin hydrochloride-modified carbon nanotubes;

[0024] (3) The thermoplastic polyurethane electrospun membrane obtained in step (1), the vancomycin hydrochloride modified carbon nanotubes obtained in step (2) and a solvent are mixed, ultrasonicated and dried to obtain the membrane material.

[0025] In one embodiment, the temperature of the ultrasound in step (1) is 40-60°C, for example, 40°C, 45°C, 50°C, 55°C, 60°C, and specific values ​​between the above points. Due to space limitations and for the sake of brevity, this application no longer exhaustively lists the specific points included in the range.

[0026] In one embodiment, the ultrasonic time in step (1) is 28-32 minutes, for example, it can be 28 minutes, 29 minutes, 30 minutes, 31 minutes, 32 minutes, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0027] In one embodiment, the stirring time in step (1) is 6-10 hours, for example, it can be 6 hours, 7 hours, 8 hours, 9 hours, 10 hours, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0028] In one embodiment, the stirring temperature in step (1) is 50-70°C, for example, it can be 50°C, 55°C, 60°C, 65°C, 70°C, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0029] In one embodiment, the electrospinning rate of step (1) is 1-3 mL / h, for example, it can be 1 mL / h, 1.5 mL / h, 2 mL / h, 2.5 mL / h, 3 mL / h, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0030] In one embodiment, the voltage of the electrospinning in step (1) is 1-20 kV, for example, it can be 1 kV, 3 kV, 5 kV, 8 kV, 10 kV, 15 kV, 18 kV, 20 kV, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0031] In one embodiment, the electrospinning time in step (1) is 2-5 hours, for example, it can be 2 hours, 3 hours, 4 hours, 5 hours, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0032] In one embodiment, the stirring temperature in step (2) is 20-30°C, for example, it can be 20°C, 22°C, 25°C, 28°C, 30°C, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0033] In one embodiment, the stirring time in step (2) is 9-12 hours, for example, it can be 9 hours, 10 hours, 11 hours, 12 hours, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0034] In one embodiment, the drying time in step (2) is 1-3 hours, for example, it can be 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0035] In one embodiment, the drying temperature in step (2) is 35-40°C, for example, it can be 35°C, 36°C, 37°C, 0.8°C, 39°C, 40°C, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0036] In one embodiment, the drying in step (2) further includes centrifugation and washing steps.

[0037] In one embodiment, the centrifugation time is 2-4 hours, for example, it can be 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0038] In one embodiment, the washing comprises washing with morpholineethanesulfonic acid.

[0039] In one embodiment, the number of cleanings is 2-5 times, for example, 2 times, 3 times, 4 times, or 5 times.

[0040] In one embodiment, the temperature of the ultrasound in step (3) is 40-60°C, for example, 40°C, 45°C, 50°C, 55°C, 60°C, and specific values ​​between the above points. Due to space limitations and for the sake of brevity, this application no longer exhaustively lists the specific points included in the range.

[0041] In one embodiment, the ultrasonic time in step (3) is 50-70 min, for example, it can be 50 min, 55 min, 60 min, 65 min, 70 min, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0042] In one embodiment, the drying temperature in step (3) is 30-40°C, for example, it can be 30°C, 32°C, 35°C, 38°C, 40°C, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0043] In one embodiment, the drying time in step (3) is 1-3 hours, for example, it can be 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, and specific point values ​​between the above point values. Due to space limitations and for the sake of simplicity, this application no longer exhaustively lists the specific point values ​​included in the range.

[0044] Vancomycin hydrochloride-modified carbon nanotubes are composited onto a thermoplastic polyurethane electrospinning membrane by ultrasound. The mechanism is as follows: Ultrasonic waves will cause cavitation bubbles to form in the liquid. When they hit the carbon nanotubes, the cavitation bubbles will deform or even break. The broken cavitation bubbles will generate high-intensity airflow or shock waves, thereby generating a large thrust and even high energy to partially melt the thermoplastic polyurethane electrospinning membrane, causing the carbon nanotubes to be deposited on the surface of the thermoplastic polyurethane electrospinning membrane.

[0045] Thermoplastic polyurethane electrospinning membranes were prepared as follows: TPU was added to a mixed solution of DMF (N,N-dimethylformamide) and THF (tetrahydrofuran), stirred to form a solution with good fluidity, and set aside. The solution was electrospun at a voltage of 15 kV.

[0046] Vancomycin hydrochloride modified carbon nanotubes: Carbon nanotubes are added to water and sonicated. Then, MES (morpholineethanesulfonic acid), EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride) and NHS (N-hydroxysuccinimide) are added to the dispersion of carbon nanotubes and stirred at room temperature. Vancomycin hydrochloride is then added to the above solution and stirred continuously. The mixture is then centrifuged, washed several times with MES buffer solution, and dried.

[0047] The membrane material was prepared as follows: vancomycin hydrochloride-modified carbon nanotubes were added to a measuring cup containing water, and then a thermoplastic polyurethane electrospun membrane (1 cm × 1.5 cm) was placed in the measuring cup. The measuring cup was then placed under the probe of an ultrasonic cell disruptor and ultrasonicated. The membrane was taken out, stirred, and dried.

[0048] In a third aspect, the present application provides an application of the membrane material as described in the first aspect in fabrics for infant and toddler clothing.

[0049] Compared with the related art, this application has the following beneficial effects:

[0050] The present application provides a membrane material, which includes a thermoplastic polyurethane electrospun membrane and vancomycin hydrochloride-modified carbon nanotubes composited on the thermoplastic polyurethane electrospun membrane. The membrane material achieves the dual functions of absorbing sunlight and converting it into heat energy and antibacterial. The temperature rise value in 20 minutes is 59.15-59.17°C, the temperature difference in 20 minutes is 24.09-24.1°C, and the antibacterial rate (Staphylococcus aureus) is 97-98%.

[0051] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The accompanying drawings are used to provide a further understanding of the technical solution of this article and constitute a part of the specification. Together with the embodiments of this application, they are used to explain the technical solution of this article and do not constitute a limitation on the technical solution of this article.

[0053] FIG1 is a graph showing the results of the antibacterial performance test of the membrane material provided in this application. DETAILED DESCRIPTION

[0054] The technical solution of the present application is further described below through specific implementation methods. Those skilled in the art should understand that the embodiments are only used to help understand the present application and should not be regarded as specific limitations of the present application.

[0055] The experimental materials used in the examples and comparative examples of this application are as follows:

[0056] (1) Carbon nanotubes, Aladdin Reagent Company, brand 308068-56-6;

[0057] (2) Vancomycin hydrochloride, manufactured by Aladdin Reagent Company, brand 1404-90-6;

[0058] (3) Thermoplastic polyurethane, manufactured by BASF SE, brand 1190A10.

[0059] Example 1

[0060] This embodiment provides a membrane material, which includes a thermoplastic polyurethane electrospun membrane and vancomycin hydrochloride-modified carbon nanotubes composited on the thermoplastic polyurethane electrospun membrane. The raw materials for preparing the vancomycin hydrochloride-modified carbon nanotubes include, by weight, 10 parts of DMF, 10 parts of THF, 10 parts of carbon nanotubes, 97.62 parts of MES (morpholineethanesulfonic acid), 400 parts of EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride) and 200 parts of NHS (N-hydroxysuccinimide), and 2 parts of vancomycin hydrochloride. The mass ratio of the thermoplastic polyurethane electrospun membrane to the vancomycin hydrochloride-modified carbon nanotubes is 100:2.

[0061] This embodiment also provides a method for preparing the membrane material, the method comprising:

[0062] (1) Carbon nanotubes were added to water and ultrasonicated at 50°C for 30 min to obtain a dispersion of carbon nanotubes; TPU was added to a mixed solution of DMF and THF and stirred at 60°C for 8 h to form a solution with good fluidity. The solution was electrospun at a voltage of 15 kV to obtain a thermoplastic polyurethane electrospun membrane at an electrospinning rate of 2 mL / h to obtain a thermoplastic polyurethane electrospun membrane;

[0063] (2) MES, EDC, and NHS were added to the carbon nanotube dispersion and stirred at room temperature for 10 min. Vancomycin hydrochloride was then added to the solution and stirred for 10 h. The mixture was then centrifuged for 180 min (3 h), washed three times with MES buffer solution, and dried in an oven at 37 °C for 120 min (2 h) to obtain vancomycin hydrochloride-modified carbon nanotubes.

[0064] (3) Vancomycin hydrochloride-modified carbon nanotubes were added to a measuring cup of water. A thermoplastic polyurethane electrospun membrane (1 cm × 1.5 cm) was then placed into the measuring cup. The measuring cup was then placed under the probe of an ultrasonic cell disruptor and ultrasonicated at 50°C for 60 minutes. The membrane was removed, stirred and washed for 3 hours, and then dried in an oven at 37°C for 120 minutes (2 hours) to obtain the membrane material.

[0065] Example 2

[0066] This embodiment provides a membrane material, which includes a thermoplastic polyurethane electrospun membrane and vancomycin hydrochloride-modified carbon nanotubes composited on the thermoplastic polyurethane electrospun membrane. The raw materials for preparing the vancomycin hydrochloride-modified carbon nanotubes include, by weight, 10 parts of DMF, 10 parts of THF, 10 parts of carbon nanotubes, 97.62 parts of MES (morpholineethanesulfonic acid), 400 parts of EDC (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride), 200 parts of NHS (N-hydroxysuccinimide), and 2.2 parts of vancomycin hydrochloride. The mass ratio of the thermoplastic polyurethane electrospun membrane to the vancomycin hydrochloride-modified carbon nanotubes is 100:2.2.

[0067] This embodiment also provides a method for preparing the membrane material, the method comprising:

[0068] (1) Carbon nanotubes were added to water and ultrasonicated at 40°C for 30 min to obtain a dispersion of carbon nanotubes; TPU was added to a mixed solution of DMF and THF and stirred at 60°C for 8 h to form a solution with good fluidity. The solution was electrospun at a voltage of 20 kV to obtain a thermoplastic polyurethane electrospun membrane at an electrospinning rate of 2 mL / h to obtain a thermoplastic polyurethane electrospun membrane;

[0069] (2) MES, EDC, and NHS were added to the carbon nanotube dispersion, stirred at room temperature for 10 min, and then vancomycin hydrochloride was added to the above solution, stirred continuously for 10 h, and then centrifuged for 180 min (3 h), washed three times with MES buffer solution, and dried in an oven at 37 ° C for 180 min (3 h) to obtain vancomycin hydrochloride modified carbon nanotubes;

[0070] (3) Vancomycin hydrochloride-modified carbon nanotubes were added to a measuring cup of water. A thermoplastic polyurethane electrospun membrane (1 cm × 1.5 cm) was then placed into the measuring cup. The measuring cup was then placed under the probe of an ultrasonic cell disruptor and ultrasonicated at 50°C for 60 minutes. The membrane was removed, stirred and washed for 3 hours, and then dried in an oven at 37°C for 120 minutes (2 hours) to obtain the membrane material.

[0071] Comparative Example 1

[0072] This comparative example provides a carbon nanotube-TPU membrane. The preparation method of the carbon nanotube-TPU membrane is as follows: carbon nanotubes are added to water and ultrasonicated at 50°C for 30 minutes to obtain a dispersion of carbon nanotubes; TPU is added to a mixed solution of DMF and THF, and stirred at 60°C for 8 hours to form a solution with good fluidity. The solution is electrospun at a voltage of 15 kV to obtain a thermoplastic polyurethane electrospun membrane at an electrospinning rate of 2 mL / h, thereby obtaining a carbon nanotube-TPU membrane.

[0073] Comparative Example 2

[0074] This comparative example provides a PU film, and the preparation method of the PU film is as follows: TPU is added to a mixed solution of DMF and THF, and stirred at 60°C for 8 hours to form a solution with good fluidity. The solution is electrospun at a voltage of 15 kV to obtain a thermoplastic polyurethane electrospinning membrane at an electrospinning rate of 2 mL / h, thereby obtaining a PU film.

[0075] The performance tests were conducted on the membrane materials provided in Examples 1-2, the carbon nanotube-TPU membrane provided in Comparative Example 1, and the PU membrane provided in Comparative Example 2. The specific methods are as follows:

[0076] (1) Heating performance: T / GDBX 012-2019 "Technical Requirements for Functionality of Clothing";

[0077] 20-minute temperature rise value = 20th minute temperature - initial temperature;

[0078] 20-minute temperature difference = test sample temperature at the 20th minute - control sample temperature at the 20th minute;

[0079] (2) Antibacterial properties: GB / T 20944.3-2008 “Evaluation of antibacterial properties of textiles – Part 3: Oscillation method”;

[0080] Bacterial inhibition rate: Staphylococcus aureus ≥ 70% is qualified;

[0081] The performance tests were conducted on the membrane materials provided in Examples 1-2, the carbon nanotube-TPU membrane provided in Comparative Example 1, and the PU membrane provided in Comparative Example 2. The test results are shown in Table 1:

[0082] Table 1

[0083] Table 1 shows that vancomycin-modified carbon nanotubes exhibit excellent antibacterial properties, and the modified carbon nanotubes exhibit excellent light absorption and heat storage properties. The antibacterial performance test results are shown in Figure 1. The first row shows the bacterial distribution after 2 hours, and the second row shows the bacterial distribution after 24 hours. From left to right, they are Comparative Example 2, Comparative Example 1, and Example 1.

[0084] The applicant declares that this application uses the above-mentioned embodiments to illustrate a membrane material, its preparation method, and its application, but this application is not limited to the above-mentioned embodiments, that is, it does not mean that this application must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvements to this application, equivalent replacements for various raw materials in the product of this application, addition of auxiliary components, and selection of specific methods, etc., fall within the scope of protection and disclosure of this application.

Claims

1. A membrane material, comprising a thermoplastic polyurethane electrospinning membrane and vancomycin hydrochloride modified carbon nanotubes composited on the thermoplastic polyurethane electrospinning membrane, wherein the raw materials for preparing the vancomycin hydrochloride modified carbon nanotubes include, by weight: 8-12 parts of carbon nanotubes, 1.8-2.2 parts of vancomycin hydrochloride, 95-110 parts of morpholineethanesulfonic acid, 380-420 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 180-220 parts of N-hydroxysuccinimide.

2. The membrane material according to claim 1, wherein The mass ratio of the thermoplastic polyurethane electrospinning membrane to the vancomycin hydrochloride modified carbon nanotubes is 100:(1-3).

3. The membrane material according to claim 1 or 2, wherein: The raw materials for preparing the vancomycin hydrochloride modified carbon nanotubes further include, by weight: 380-420 parts of solvent.

4. The membrane material according to claim 3, wherein The solvent includes any one of N,N-dimethylformamide, water or tetrahydrofuran, or a combination of at least two thereof.

5. A method for preparing the membrane material according to any one of claims 1 to 4, comprising: S1: mixing carbon nanotubes, vancomycin hydrochloride, morpholineethanesulfonic acid, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide to obtain vancomycin hydrochloride modified carbon nanotubes; Electrospinning the thermoplastic polyurethane to obtain a thermoplastic polyurethane electrospinning membrane; S2: mixing the vancomycin hydrochloride modified carbon nanotubes obtained in step S1 with the thermoplastic polyurethane electrospinning membrane, and performing ultrasound to obtain the membrane material.

6. The preparation method according to claim 5, wherein: The preparation method specifically comprises: (1) mixing carbon nanotubes and a solvent, and performing ultrasound to obtain a carbon nanotube dispersion; mixing thermoplastic polyurethane and the solvent, and performing stirring and electrostatic spinning to obtain a thermoplastic polyurethane electrospinning membrane; (2) mixing the carbon nanotube dispersion obtained in step (1), vancomycin hydrochloride, morpholineethanesulfonic acid, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide, stirring and drying to obtain vancomycin hydrochloride modified carbon nanotubes; (3) The thermoplastic polyurethane electrospinning membrane obtained in step (1), the vancomycin hydrochloride modified carbon nanotubes obtained in step (2) and a solvent are mixed, and ultrasonicated and dried to obtain the membrane material.

7. The preparation method according to claim 6, wherein: The temperature of the ultrasound in step (1) is 40-60°C.

8. The preparation method according to claim 6 or 7, wherein: The ultrasonic treatment time in step (1) is 28-32 minutes.

9. The preparation method according to any one of claims 6 to 8, wherein: The stirring time in step (1) is 6-10 hours.

10. The preparation method according to any one of claims 6 to 9, wherein: The stirring temperature in step (1) is 50-70°C.

11. The preparation method according to any one of claims 6 to 10, wherein: The electrospinning rate of step (1) is 1-3 mL / h; Optionally, the voltage of the electrospinning in step (1) is 1-20 kV; Optionally, the electrospinning time in step (1) is 2-5 hours.

12. The preparation method according to any one of claims 6 to 11, wherein: The stirring temperature in step (2) is 20-30° C. Optionally, the stirring time in step (2) is 9-12 hours; Optionally, the drying time in step (2) is 1-3 hours; Optionally, the drying temperature in step (2) is 35-40°C.

13. The preparation method according to any one of claims 6 to 12, wherein: After the drying in step (2), the method further comprises the steps of centrifugation and washing; Optionally, the centrifugation time is 2-4h; Optionally, the cleaning comprises cleaning with morpholineethanesulfonic acid; Optionally, the cleaning is performed 2-5 times.

14. The preparation method according to any one of claims 6 to 13, wherein: The temperature of the ultrasound in step (3) is 40-60°C; Optionally, the ultrasonic time in step (3) is 50-70 min; Optionally, the drying temperature in step (3) is 30-40°C; Optionally, the drying time in step (3) is 1-3 hours.

15. Use of the membrane material according to any one of claims 1 to 4 in fabrics for infant clothing.

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