Super-hydrophobic and antibacterial polyester fabric and preparation method thereof

Abstract

The invention relates to a super-hydrophobic and antibacterial polyester fabric and a preparation method thereof. The fabric can be prepared by adopting the following method: firstly, extracting low-surface-energy substances from lotus leaves; secondly, preparing a polyacrylic acid coating agent from acrylic acid, styrene, butyl acrylate and the like; then, uniformly mixing the extracting solution, a coating agent and a pore-forming agent solution to prepare a composite coating agent; and finally, carrying out coating finishing on the polyester fabric to obtain the super-hydrophobic and antibacterial polyester fabric. The surface of the prepared super-hydrophobic and antibacterial polyester fabric contains low-surface-energy substances extracted from lotus leaves, and the super-hydrophobic and antibacterial polyester fabric shows good super-hydrophobicity; the antibacterial rate of the prepared polyester fabric on escherichia coli reaches 72.0% or above, after 10 times of washing, the polyester fabric still has very high antibacterial performance on escherichia coli, and the antibacterial rate reaches 68.0% or above.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric preparation, and specifically relates to a super-hydrophobic and antibacterial polyester fabric and a preparation method thereof. Background Art

[0002] At present, the clothes we wear are porous textiles. Sweat, sebum, and skin flakes produced by human metabolism are easily adsorbed on them. These metabolites become the nutrient matrix of microorganisms, and the fabric becomes the habitat of bacteria. In recent years, hydrophobic textiles have also received attention from the industry. By utilizing hydrophobicity, fibers can achieve self-cleaning, making them suitable for various special purposes. Therefore, the research and development of super-hydrophobic and antibacterial textiles has become one of the healthy development trends in today's society.

[0003] Polyester fabric is a kind of chemical fiber clothing fabric commonly used in daily life. It has high strength and elastic recovery ability. Although the moisture absorption of polyester fabric is poor, it is very easy to dry after washing and does not deform, and has good wearability after washing. Polyester is also the most heat-resistant fabric among synthetic fabrics. It has thermoplasticity, and its light resistance, acid resistance, alkali resistance and other chemical resistance properties are also very good.

[0004] Literature research shows that the super-hydrophobic and antibacterial properties of polyester fabrics have received widespread attention. For example, Chinese invention patent application No. 202110220467.7 discloses a hydrophobic polyester fiber and a preparation method thereof: the polyester fiber pretreated with alkali solution is immersed in a dispersion obtained by dispersing graphene oxide and organosilane in an organic solvent, and finally the impregnated fiber is plasma treated to obtain the hydrophobic polyester fiber; Chinese invention patent application No. 202011347337.1 discloses a preparation method of antibacterial polyester low-elastic yarn: the pretreated polyethylene terephthalate is melted and mixed, and then added to the spinning metering pump to spin polyester raw yarn, and then a layer of antibacterial liquid is sprayed on the surface, and dried by ultraviolet irradiation. The antibacterial polyester fabrics and hydrophobic polyester fabrics prepared by these methods still have many shortcomings, such as: the graphene dispersion used in the first method is expensive and cannot be mass-produced; the antibacterial finishing effect of the second method is poor in durability, and the antibacterial performance will significantly decrease after multiple washing and friction. Moreover, the above methods cannot integrate antibacterial properties and super-hydrophobic properties together, and cannot coordinate the multiple properties of polyester fabrics.

[0005] Therefore, it is of great practical significance to improve the superhydrophobic process and antibacterial process of polyester fabrics in the prior art to obtain polyester fabrics with high superhydrophobicity and antibacterial properties and low cost. Summary of the invention

[0006] In view of the above-mentioned drawbacks existing in the prior art, the object of the present invention is to provide a super hydrophobic and antibacterial polyester fabric and a preparation method thereof.

[0007] The purpose of the present invention is to provide a super-hydrophobic and antibacterial polyester fabric, which has the characteristics of being environmentally friendly and human-friendly. The fabric can be prepared by the following method: first, extracting low surface energy substances from lotus leaves; second, preparing a polyacrylic acid coating agent by using acrylic acid, styrene, butyl acrylate, etc.; then, uniformly mixing the extract, the coating agent and the pore-forming agent solution to prepare a composite coating agent; finally, coating the polyester fabric to prepare the super-hydrophobic and antibacterial polyester fabric.

[0008] The object of the present invention is achieved through the following technical solutions:

[0009] A method for preparing a super-hydrophobic and antibacterial polyester fabric comprises the following steps:

[0010] (1) Extraction of low surface energy substances: Select lotus leaves, wash them first and then crush them, extract them using supercritical CO2, and use ethanol as an entrainer to prepare an extract, which is an ethanol solution containing low surface energy substances on the lotus leaf surface.

[0011] Preferably, the extraction pressure is 10-20 MPa, the extraction temperature is 50-60° C., the extraction time is 1-3 h, and the CO2 flow rate is 20-30 L / h.

[0012] (2) Preparation of coating agent: Weigh sodium dodecylbenzene sulfonate, octylphenol polyoxyethylene ether (OP-10), acrylic acid, styrene, butyl acrylate and ammonium persulfate, dissolve all of the sodium dodecylbenzene sulfonate, octylphenol polyoxyethylene ether (OP-10) and 1 / 3 of the total amount of acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in deionized water, stir evenly, control the temperature to 75-85°C, and stir for 1-2 hours; then, dissolve the remaining 2 / 3 of acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in deionized water and add dropwise to the mixed solution just stirred, control the dropping time to 2-3 hours, and keep warm for 2-3 hours after the dropping is completed; the emulsion is left for one month, and if no stratification or precipitation occurs, the polyacrylic acid coating agent can be prepared.

[0013] Preferably, the dosage ratio of the sodium dodecylbenzene sulfonate (g), octylphenol polyoxyethylene ether (OP-10) (g), acrylic acid (mol), styrene (mol), butyl acrylate (mol) and ammonium persulfate (g) is: 1:1-2:0.1-0.2:0.1-0.2:0.1-0.2:0.5-1.

[0014] (3) Preparation of pore-forming agent solution: Dissolve ammonium bicarbonate in tap water to prepare a pore-forming agent solution.

[0015] Preferably, the usage ratio of ammonium bicarbonate (g) to tap water (mL) is 1:100-200.

[0016] (4) Blending: The extract obtained in step (1), the coating agent obtained in step (2) and the pore-forming agent solution obtained in step (3) are uniformly mixed by a high-speed dispersing homogenizer to obtain a composite coating agent.

[0017] Preferably, the usage ratio of the extract (mL) obtained in step (1), the coating agent (mL) obtained in step (2) and the pore-forming agent solution (mL) obtained in step (3) is 1:10-20:1-2.

[0018] Preferably, the rotation speed of the high-speed dispersing homogenizer is 20000-30000 r / min; and the mixing time is 10-20 min.

[0019] (5) Coating finishing: Stretch the fabric tightly on the stretcher. The fabric is suitable for polyester fabric. Use a scraper to evenly apply the composite coating agent on the fabric. The dry weight of the coating is 20-30g / m 2 , dried at 90°C for 3 minutes and baked at 140-170°C for 10 minutes to obtain super hydrophobic and antibacterial polyester fabric.

[0020] The present invention has the following notable features:

[0021] (1) The present invention extracts low surface energy substances on the surface of lotus leaves through supercritical CO2 extraction; ammonium bicarbonate is dissolved in water to prepare a pore-forming agent solution; and the low surface energy substances on the surface of lotus leaves, the pore-forming agent solution and the polyacrylic acid coating agent are uniformly mixed.

[0022] (2) The inventors of the present application unexpectedly discovered that ammonium bicarbonate decomposes during heating and drying to form a rough micro-nano structure on the surface of the polyester fabric; in addition, the low surface energy substances on the surface of the lotus leaf adhere to the surface of the polyester fabric, reducing the surface free energy of the polyester fabric. Under the influence of this dual effect, the polyester fabric has a strong hydrophobicity and a certain antibacterial property.

[0023] (3) The surface of the super-hydrophobic and antibacterial polyester fabric prepared by the present invention contains low surface energy substances extracted from lotus leaves, and the apparent contact angle of water droplets on the polyester fabric ranges from 151° to 153°, showing good super-hydrophobicity; after 10 times of washing, the hydrophobicity of the polyester fabric is still not significantly weakened. The antibacterial rate of the polyester fabric prepared by the present invention against Escherichia coli reaches more than 72.0%, and after 10 times of washing, it still shows a certain antibacterial performance against Escherichia coli, with an antibacterial rate of more than 68.0%.

[0024] (4) After 10 times of washing, the super-hydrophobic and antibacterial properties of the super-hydrophobic and antibacterial polyester fabric prepared by the present invention are not significantly weakened, which indicates that the low surface energy substances on the surface of the lotus leaf can be firmly attached to the surface of the polyester fabric.

[0025] (5) The super-hydrophobic and antibacterial polyester fabric prepared by the present invention has a wide range of raw material sources, a simple preparation process, and has a good market promotion prospect. DETAILED DESCRIPTION

[0026] The following examples and comparative examples illustrate the present invention in detail.

[0027] Embodiment 1:

[0028] A method for preparing a super-hydrophobic and antibacterial polyester fabric comprises the following steps:

[0029] (1) Extraction of low surface energy substances: 1000 g of lotus leaves were selected, washed and crushed, and extracted using the supercritical CO2 method; the CO2 flow rate during extraction was 25 L / h, the extraction pressure was 15 MPa, the extraction temperature was 55°C, and ethanol was used as the entrainer. After extraction for 2 hours, an ethanol solution extract containing low surface energy substances on the lotus leaf surface was obtained.

[0030] (2) Preparation of coating agent: Weigh 1 g of sodium dodecylbenzene sulfonate, 1.5 g of octylphenol polyoxyethylene ether (OP-10), 0.15 mol of acrylic acid, 0.15 mol of styrene, 0.15 mol of butyl acrylate and 0.75 g of ammonium persulfate; dissolve 1 g of sodium dodecylbenzene sulfonate, 1.5 g of octylphenol polyoxyethylene ether (OP-10), 0.05 mol of acrylic acid, 0.05 mol of styrene, 0.05 mol of butyl acrylate and 0.25 g of ammonium persulfate initiator in 300 mL of deionized water. , stirring evenly, controlling the temperature to 80°C, stirring for 1.5 hours to obtain a mixed solution A; then, dissolving the remaining 0.1 mol of acrylic acid, 0.1 mol of styrene, 0.1 mol of butyl acrylate and 0.5 g of ammonium persulfate initiator in 200 mL of deionized water to obtain a mixed solution B; adding the mixed solution B dropwise to the mixed solution A just stirred, the adding time is controlled to 2.5 hours, and after the adding is completed, keeping warm for 2.5 hours; leaving the emulsion for one month, if no stratification or precipitation occurs, the polyacrylic acid coating agent is obtained.

[0031] (3) Preparation of pore-forming agent solution: Dissolve 1 g of ammonium bicarbonate in 150 mL of tap water and stir well to prepare a pore-forming agent solution.

[0032] (4) Blending: Weigh 10 mL of the extract obtained in step (1), 150 mL of the coating agent obtained in step (2), and 15 mL of the pore-forming agent solution obtained in step (3); uniformly mix the weighed solutions in a high-speed dispersing homogenizer at 25,000 r / min for 15 minutes to obtain a composite coating agent.

[0033] (5) Coating finishing: Stretch the polyester fabric tightly on the stretcher, and use a scraper to evenly apply the composite coating agent on the polyester fabric, with the coating amount being 25g / m2 dry weight. 2 Finally, the treated fabric was dried at 90°C for 3 minutes and baked at 155°C for 10 minutes to obtain a super-hydrophobic and antibacterial polyester fabric.

[0034] Embodiment 2:

[0035] A method for preparing a super-hydrophobic and antibacterial polyester fabric comprises the following steps:

[0036] (1) Extraction of low surface energy substances: 1000 g of lotus leaves were selected, washed and crushed, and extracted using supercritical CO2 method. During the extraction, the CO2 flow rate was 20 L / h, the extraction pressure was 10 MPa, the extraction temperature was 50 ° C, and ethanol was used as the entrainer. After extraction for 1 hour, an ethanol solution extract containing low surface energy substances on the lotus leaf surface was obtained.

[0037] (2) Preparation of coating agent: Weigh 1 g of sodium dodecylbenzene sulfonate, 1 g of octylphenol polyoxyethylene ether (OP-10), 0.1 mol of acrylic acid, 0.1 mol of styrene, 0.1 mol of butyl acrylate and 0.5 g of ammonium persulfate; dissolve 1 g of sodium dodecylbenzene sulfonate, 1 g of octylphenol polyoxyethylene ether (OP-10), 0.033 mol of acrylic acid, 0.033 mol of styrene, 0.033 mol of butyl acrylate and 0.17 g of ammonium persulfate initiator in 300 mL of deionized water and mix evenly. Stirring, controlling the temperature at 75°C, stirring for 1 hour to obtain a mixed solution A; then, dissolving the remaining 0.067 mol of acrylic acid, 0.067 mol of styrene, 0.067 mol of butyl acrylate and 0.33 g of ammonium persulfate initiator in 200 mL of deionized water to obtain a mixed solution B; adding the mixed solution B dropwise to the mixed solution A just stirred, the adding time is controlled to 2 hours, and after the adding is completed, keeping warm for 2 hours; leaving the emulsion for one month, if no stratification or precipitation occurs, the polyacrylic acid coating agent is obtained.

[0038] (3) Preparation of pore-forming agent solution: Dissolve 1 g of ammonium bicarbonate in 100 mL of tap water and stir well to prepare a pore-forming agent solution.

[0039] (4) Blending: Weigh 10 mL of the extract obtained in step (1), 100 mL of the coating agent obtained in step (2), and 10 mL of the pore-forming agent solution obtained in step (3); uniformly mix the weighed solutions in a high-speed dispersing homogenizer at 20,000 r / min for 10 minutes to obtain a composite coating agent.

[0040] (5) Coating finishing: Stretch the polyester fabric tightly on the stretcher, and use a scraper to evenly apply the composite coating agent on the polyester fabric, with the coating amount being 20g / m2 dry weight. 2 Finally, the treated fabric was dried at 90°C for 3 minutes and baked at 140°C for 10 minutes to obtain a super-hydrophobic and antibacterial polyester fabric.

[0041] Embodiment 3:

[0042] A method for preparing a super-hydrophobic and antibacterial polyester fabric comprises the following steps:

[0043] (1) Extraction of low surface energy substances: 1000 g of lotus leaves were selected, washed and crushed, and extracted using the supercritical CO2 method; during the extraction, the CO2 flow rate was 30 L / h, the extraction pressure was 20 MPa, the extraction temperature was 60°C, and ethanol was used as the entrainer. After extraction for 3 hours, an ethanol solution extract containing low surface energy substances on the lotus leaf surface was obtained.

[0044] (2) Preparation of coating agent: Weigh 1 g of sodium dodecylbenzene sulfonate, 2 g of octylphenol polyoxyethylene ether (OP-10), 0.2 mol of acrylic acid, 0.2 mol of styrene, 0.2 mol of butyl acrylate and 1 g of ammonium persulfate; dissolve 1 g of sodium dodecylbenzene sulfonate, 2 g of octylphenol polyoxyethylene ether (OP-10), 0.067 mol of acrylic acid, 0.067 mol of styrene, 0.067 mol of butyl acrylate and 0.33 g of ammonium persulfate initiator in 300 mL of deionized water and stir evenly. Stir, control the temperature to 85°C, stir for 2 hours to obtain a mixed solution A; then, dissolve the remaining 0.133 mol of acrylic acid, 0.133 mol of styrene, 0.133 mol of butyl acrylate and 0.67 g of ammonium persulfate initiator in 200 mL of deionized water to obtain a mixed solution B; add the mixed solution B dropwise to the mixed solution A just stirred, the adding time is controlled to 3 hours, and after the adding is completed, keep warm for 3 hours; leave the emulsion for one month, and if no stratification or precipitation occurs, the polyacrylic acid coating agent is obtained.

[0045] (3) Preparation of pore-forming agent solution: Dissolve 1 g of ammonium bicarbonate in 200 mL of tap water and stir well to prepare a pore-forming agent solution.

[0046] (4) Blending: Weigh 10 mL of the extract obtained in step (1), 200 mL of the coating agent obtained in step (2), and 20 mL of the pore-forming agent solution obtained in step (3); uniformly mix the weighed solutions in a high-speed dispersing homogenizer at 30,000 r / min for 20 minutes to obtain a composite coating agent.

[0047] (5) Coating finishing: Stretch the polyester fabric tightly on the stretcher, and use a scraper to evenly apply the composite coating agent on the polyester fabric, with the coating amount being 30g / m2 dry weight. 2 Finally, the treated fabric was dried at 90°C for 3 minutes and baked at 170°C for 10 minutes to obtain a super-hydrophobic and antibacterial polyester fabric.

[0048] Comparative Example A

[0049] Taking Example 1 as a comparison, in this comparative example, the "extracting low surface energy substances from lotus leaves" in step (1) is not selected, that is, "selecting lotus leaves" in step (1) is changed to "selecting rice leaves", and the other preparation methods are implemented according to the preparation method of Example 1.

[0050] Comparative Example B

[0051] In contrast to Example 1, in this comparative example, the "ammonium bicarbonate" in step (3) is not selected, that is, in step (4), "dissolve 1 g of ammonium bicarbonate in 150 mL of tap water and stir evenly" is changed to "dissolve 1 g of sodium carbonate in 150 mL of tap water and stir evenly", and the other preparation methods are implemented according to the preparation method of Example 1.

[0052] Comparative Example C

[0053] Taking Example 1 as a comparison, in this comparative example, the "baking at 155°C for 10 minutes" in step (5) is changed to "baking at 95°C for 3 minutes", and the other preparation methods are implemented according to the preparation method of Example 1.

[0054] Super hydrophobic performance test:

[0055] In order to better detect the super-hydrophobicity of the super-hydrophobic and antibacterial polyester fabric prepared in the present invention, the super-hydrophobic and antibacterial polyester fabrics a, b, c, d, e, f prepared in the above-mentioned specific embodiments 1 to 3 and comparative examples A to C of the present invention and the purchased super-hydrophobic polyester fabric (purchased from Shanghai Weiren Wool Textile Co., Ltd.) were selected. The apparent contact angle of water droplets on the surface of the super-hydrophobic and antibacterial polyester fabric was measured using an XG-CAMA1 basic contact angle tester, and no less than 30 test samples were tested, and the test average value was taken. The fabric to be tested was subjected to standard washing with reference to the washing method of the washing color fastness tester of GB / T 20944.1-2007, and the super-hydrophobic properties of the initial sample and the sample after washing 10 times were tested. The test results are shown in Table 1.

[0056] Table 1 Apparent contact angles of water droplets on superhydrophobic and antibacterial polyester fabrics a, b, c, d, e, f

[0057]

[0058] As can be seen from Table 1, the apparent contact angles of water droplets on super-hydrophobic and antibacterial polyester fabrics a, b, and c are in the range of 151° to 153°, respectively, which is slightly higher than the apparent contact angles of the purchased super-hydrophobic polyester fabrics. After 10 times of washing, the hydrophobic properties of fabrics a, b, and c have not weakened. Generally, when the apparent contact angle is greater than 150°, it means that the fabric has super-hydrophobicity. It can be considered that the super-hydrophobic and antibacterial polyester fabric prepared by the present invention has super-hydrophobicity. The super-hydrophobicity of the super-hydrophobic and antibacterial polyester fabrics d, e, and f prepared by Comparative Examples AC is significantly poorer, which indicates that the selection of low surface energy substances, the selection of pore-forming agent solutions, and the baking time and temperature all have an important influence on the super-hydrophobic properties of polyester fabrics.

[0059] Antibacterial performance test:

[0060] The super-hydrophobic and antibacterial polyester fabrics a, b, c, d, e, and f prepared in Examples 1-3 and Comparative Examples AC were subjected to antibacterial experiments respectively. The specific antibacterial experimental methods were as follows: the fabrics were qualitatively tested by agar diffusion method according to GB / T 20944.1-2007 "Evaluation of Antibacterial Properties of Textiles Part 1: Agar Plate Diffusion Method", and the fabrics were quantitatively tested for antibacterial properties according to GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles Part 3: Oscillation Method", and the bacterial species were Staphylococcus aureus and Escherichia coli. The qualitative test results of the samples were expressed as inhibition zones, and the quantitative antibacterial activity was expressed as inhibition rates, which were calculated according to the formula: inhibition rate = (1-B / A) × 100%, where A is the number of viable bacteria on the untreated fabric; B is the number of viable bacteria on the treated fabric. The fabrics to be tested were subjected to standard washing according to the washing method of the washing color fastness test machine of GB / T20944.1-2007, and the antibacterial properties of the initial samples and the samples after washing 10 times were tested. The test results are shown in Table 2.

[0061] Table 2 Antibacterial rate of super hydrophobic and antibacterial polyester fabrics a, b, c, d, e, f prepared in Examples 1-3 and Comparative Examples AC against Escherichia coli

[0062] project a b c d e f Unwashed 88.7％ 79.4％ 72.9％ 45.3％ 31.5％ 28.8％ Wash 10 times 85.3％ 73.1％ 68.5％ 23.3％ 26.6％ 17.4％

[0063] As can be seen from Table 2, the super-hydrophobic and antibacterial polyester fabrics a, b, and c prepared in Examples 1-3 have obvious antibacterial properties against Escherichia coli. The antibacterial rate of the unwashed super-hydrophobic and antibacterial polyester fabric against Escherichia coli reached more than 72.0%. After 10 washes, the super-hydrophobic and antibacterial polyester fabric still showed certain antibacterial properties against Escherichia coli, and the antibacterial rate reached more than 68.0%. The antibacterial rates of the super-hydrophobic and antibacterial polyester fabrics d, e, and f prepared in Comparative Examples AC against Escherichia coli were significantly poor, which shows that the selection of low surface energy substances, the selection of pore-forming agent solutions, and the baking time and temperature all have an important influence on the antibacterial properties of polyester fabrics.

[0064] By studying the antibacterial performance of the superhydrophobic and antibacterial polyester fabric prepared by the present invention on Escherichia coli and the apparent contact angle of water droplets on the superhydrophobic and antibacterial polyester fabric, it can be considered that the polyester fabric prepared by the present invention has the dual functions of superhydrophobicity and antibacterial, among which the superhydrophobicity is obvious and the antibacterial performance needs to be further improved.

Claims

1. A method for preparing super hydrophobic and antibacterial polyester fabric, characterized in that: The preparation method comprises the following steps: (1) Extraction of low surface energy substances: Select lotus leaves, wash them first and then crush them, extract them using supercritical CO2, use ethanol as an entrainer, and prepare an extract, which is an ethanol solution containing low surface energy substances on the surface of the lotus leaves; (2) Preparation of coating agent: Weigh sodium dodecylbenzene sulfonate, octylphenol polyoxyethylene ether (OP-10), acrylic acid, styrene, butyl acrylate and ammonium persulfate, dissolve all of sodium dodecylbenzene sulfonate, octylphenol polyoxyethylene ether (OP-10) and 1 / 3 of the total amount of acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in deionized water, stir evenly, control the temperature to 75-85° C., and stir for 1-2 hours; then, dissolve the remaining 2 / 3 of acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in deionized water and add dropwise to the mixed solution just stirred, control the dropwise addition time to 2-3 hours, and keep warm for 2-3 hours after the dropwise addition is completed; the emulsion is left for one month, and if no stratification or precipitation occurs, the polyacrylic acid coating agent can be prepared; (3) Preparation of pore-forming agent solution: dissolving ammonium bicarbonate in tap water to prepare a pore-forming agent solution; (4) blending: uniformly mixing the extract obtained in step (1), the coating agent obtained in step (2), and the pore-forming agent solution obtained in step (3) by a high-speed dispersing homogenizer to obtain a composite coating agent; (5) Coating finishing: The fabric is stretched tightly on a stretcher. The fabric is suitable for polyester fabric. The composite coating agent is evenly applied on the fabric with a scraper. The dry weight of the coating amount is 20 to 30 g / m 2 , dried at 90°C for 3 minutes and baked at 140-170°C for 10 minutes to obtain super hydrophobic and antibacterial polyester fabric.

2. The method for preparing a super-hydrophobic and antibacterial polyester fabric according to claim 1, characterized in that: In the step (1), the extraction pressure is 10-20 MPa, the extraction temperature is 50-60° C., the extraction time is 1-3 h, and the CO2 flow rate is 20-30 L / h.

3. The method for preparing a super-hydrophobic and antibacterial polyester fabric according to claim 1, characterized in that: In the step (2), the dosage ratio of sodium dodecylbenzene sulfonate, octylphenol polyoxyethylene ether (OP-10), acrylic acid, styrene, butyl acrylate and ammonium persulfate is 1g: (1-2)g: (0.1-0.2)mol: (0.1-0.2)mol: (0.1-0.2)mol: (0.5-1)g.

4. The method for preparing a super-hydrophobic and antibacterial polyester fabric according to claim 1, characterized in that: In the step (3), the usage ratio of ammonium bicarbonate to tap water is 1 g: (100-200) mL.

5. The method for preparing a super-hydrophobic and antibacterial polyester fabric according to claim 1, characterized in that: In the step (4), the usage ratio of the extract obtained in step (1), the coating agent obtained in step (2) and the pore-forming agent solution obtained in step (3) is 1 mL: (10-20) mL: (1-2) mL.

6. The method for preparing a super-hydrophobic and antibacterial polyester fabric according to claim 1, characterized in that: In the step (4), the rotation speed of the high-speed dispersing homogenizer is 20,000 to 30,000 r / min; and the mixing time is 10 to 20 min.

7. A super hydrophobic and antibacterial polyester fabric, characterized in that: The invention is prepared by the method according to any one of claims 1 to 6.

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