Method for preparing natural sunscreen quick-drying clothes fabric from plant extracts

Abstract

The invention discloses a method for preparing a natural sunscreen quick-drying clothes fabric from plant extracts. The method comprises the following specific steps: weighing corresponding linen fibers, soybean protein fibers, apocynum venetum fibers, bamboo charcoal fibers and seaweed cellulose fibers; s2, the fibers are sequentially taken out of the cotton bale according to the proportion, blowing, cotton carding and spinning processes are carried out respectively, and corresponding spun yarns are obtained; s3, performing sliver mixing and spooling on the spun yarns obtained from all the fibers to obtain blended spun yarns; s4, a seamless spinning process is adopted, the blended spun yarn is sequentially subjected to twisting, warping, slashing and fabric forming to form the fabric, and the corresponding blended fabric is obtained; s5, the blended fabric is subjected to scouring and bleaching, dyeing, post-finishing, shaping and drying, and the sun-proof quick-drying fabric is obtained. According to the sun-proof quick-drying fabric, blending is conducted through the plant fiber technology, the blended fabric has a certain sun-proof function and meanwhile has excellent quick-drying performance, the titanium dioxide nano aerogel is applied to extraction of plant extracts, and the anti-ultraviolet performance of the fabric is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sun-proof quick-drying fabric preparation, in particular to a method for preparing natural sun-proof quick-drying clothing fabric by utilizing plant extracts. Background Art

[0002] With the continuous improvement of people's living standards and the renewal of consumption concepts, green and environmentally friendly textiles are becoming more and more popular among consumers. Textile consumption has changed from an era of pursuing texture and thick wear resistance to a new concept of pursuing comfort, environmental protection, light weight, fashion, and UV resistance. People are more and more eager to pursue green and environmentally friendly fabrics. They not only require clothes to be beautiful, comfortable, and cheap, but also require them to have health care functions, such as moisture absorption, perspiration, UV resistance, antibacterial and deodorizing, radiation protection, antistatic, antiviral, and anti-allergic, so functional textile fabrics came into being. For example, patent application: CN106880235A uses fabrics made of bamboo fiber, hemp fiber, ice germanium fiber, wool, etc., which have moisture absorption and heat dissipation, breathable and moisture removal functions, and also have certain antibacterial and mildew-proof and UV resistance effects, but its UV resistance effect is not ideal; for example, patent application: CN106749181A discloses a blended fabric containing bamboo fiber and silk fiber, which has good moisture absorption, breathability, radiation protection and UV resistance, but its UV resistance performance is insufficient.

[0003] At present, the chemical sunscreens added to fabrics have defects such as insufficient safety, poor sun protection effect, low light stability and washability, and poor air permeability. In addition, most of the added chemical UV absorbers are allergic or irritating to human skin and cause certain damage to the skin. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing natural sun-proof quick-drying clothing fabrics using plant extracts, so as to solve the problems that the fabrics proposed in the above-mentioned background technology have the defects of insufficient safety, poor sun protection effect, low light stability and washability, poor air permeability, etc., and most of the added chemical ultraviolet absorbers are allergic or irritating to human skin and have certain damage to the skin.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for preparing natural sun-proof quick-drying clothing fabric using plant extracts, wherein the fabric is prepared by blending the following fibers in percentage by weight: 10% to 20% flax fiber, 10% to 20% soy protein fiber, 55% to 70% apocynum fiber, 3% to 5% bamboo charcoal fiber, and 1% to 5% seaweed cellulose fiber; The specific steps include: S1: weigh corresponding flax fiber, soybean protein fiber, apocynum fiber, bamboo charcoal fiber and seaweed cellulose fiber; S2: taking out the fibers from the cotton bales in proportion, and performing the processes of cleaning, carding and spinning respectively to obtain the corresponding spun yarn; S3: blending and winding the spun yarns obtained from all the fibers to obtain blended spun yarns; S4: adopting seamless spinning process, the blended spun yarn is subjected to twisting, warping, sizing and weaving steps in sequence to form fabric, thereby obtaining corresponding blended fabric; S5: The blended fabric is scourged, dyed, post-finished, shaped and dried to prepare a sun-proof quick-drying fabric.

[0006] Furthermore, the fabric is specifically prepared by blending fibers in the following weight percentages: 15% flax fiber, 15% soybean protein fiber, 65% apocynum fiber, 5% bamboo charcoal fiber, and 3% seaweed cellulose fiber.

[0007] Furthermore, in the spinning process, the shape of the spinneret is changed to make the fiber cross-section irregular to increase the fiber surface area, and the fiber is blended with a special micropore former and then dissolved, so that there are many through pores from the fiber surface to the hollow part. By modifying the fiber structure, the hydrophilicity of the fabric is enhanced, and the pore size of the microporous film is between the diameters of water molecules and air molecules, so that water droplets cannot enter, but water molecules and air molecules can pass freely, giving the fabric waterproof and breathable functions.

[0008] Furthermore, the scouring and bleaching process comprises the following specific steps: S1: Pump the scouring and bleaching working solution into the dyeing vat, heat it to 25°C, put the blended fabric into the dyeing vat, heat it to 80°C, react for 2h, then take it out and cool it to normal pressure; S2: neutralize with soda ash, raise the temperature to 50°C, react for 1 hour to obtain a reacted mixed solution, and discharge the mixed solution; S3: Wash the blended fabric in clean water and then spin dry, and dehydrate to obtain the scouring and bleaching blended fabric.

[0009] Furthermore, the dyeing process comprises the following specific steps: S1: Add dye into the dye vat, heat it to 50℃ and then drain it; S2: Put the blended fabric into the dyeing vat, continue to raise the temperature to 50°C, keep it for 1 hour and then drain; S3: Use cold water to rinse the blended fabric for 5 minutes; S4: After dehydrating and drying the blended fabric, the blended fabric is placed in a centrifuge for centrifugal drying to obtain a dyed blended fabric.

[0010] Furthermore, the dye comprises the following components in weight percentage: 5% plant extract, 5% sodium carbonate, 5% sodium silicate, 6% dispersant, 6% penetrant, 5% wood cellulose, and the balance deionized water.

[0011] Furthermore, the plant extract is prepared from the following raw materials: honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel; The specific preparation process of the plant extract is as follows: S1: material selection: selecting a certain amount of honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel as raw materials; S2: Pretreatment: drying the honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel at 45° C. for 22 hours, grinding them for 3 hours, adding ethanol three times their weight, and soaking them at 65° C. for 8 hours to obtain honeysuckle ethanol solution, pomegranate seeds ethanol solution, tea leaves ethanol solution, cinnamon bark ethanol solution, and walnut peel ethanol solution; S3: mixing the honeysuckle ethanol solution, pomegranate seed ethanol solution, tea ethanol solution, cinnamon bark ethanol solution, and walnut peel ethanol solution, respectively adding the titanium dioxide nano aerogel, and stirring evenly to obtain a mixture A; S4: adjusting the pH value of the mixture A to 7 with dilute hydrochloric acid, conveying the mixture A with a pH value of 7 to an extraction kettle of an extraction device, introducing supercritical carbon dioxide, wherein the ratio of the mixture A to the supercritical carbon dioxide is 1 g:5 ml, heating the mixture to 160° C. at a rate of 5° C. / min in the extraction kettle and maintaining the temperature for 15 min, and then heating the mixture to 60° C. at a rate of 10° C. / min in the separation kettle, wherein the pressure in the extraction kettle is 40 MPa, and the pressure in the separation kettle is 5 MPa, to obtain a plant extract; S5: removing impurities and odors from the plant extract, and then spray-drying the plant extract to obtain a plant extract.

[0012] Furthermore, in step S2 of the dyeing process, the blended fabric is pretreated with sodium carbonate before being sent into the dyeing vat, and the specific process of the pretreatment is: the blended fabric and sodium carbonate are stirred and reacted with a stirrer; the mass ratio of the blended fabric and sodium carbonate is 1: (0.06-0.08); wherein the concentration of sodium carbonate is 0.3 g / L.

[0013] Furthermore, the addition amount of the titanium dioxide nano-aerogel accounts for 3 g / L of the total weight of the raw materials; the preparation process of the titanium dioxide nano-aerogel is: 1). Weigh water glass and toluene, heat to 70°C, and stir to mix evenly to obtain a mixed solution A; the mass ratio of the water glass to the toluene is 2:1; 2). Weigh tetraethyl orthosilicate and slowly add it to mixed solution A, and at the same time, drop hydrochloric acid. After the dropwise addition is complete and the mixture is stirred evenly, a mixed solution B is obtained; wherein the mass ratio of water glass, tetraethyl orthosilicate and hydrochloric acid is 1:1:1; 3). Weigh the surfactant, add it into the mixed solution B and stir until the silica sol is obtained; 4). Prepare a titanium hydroxide precursor solution, wherein the content of anhydrous sodium titanate is 13 mol / L and the content of anhydrous sodium silicate is 7 mol / L; 5). Weigh the titanate coupling agent, add the surfactant, add 25% ethanol aqueous solution to dilute, weigh the surfactant again, and add it to the above mixture to obtain a mixture C; wherein, silica sol: surfactant: titanate coupling agent = 30mL: 0.2g: 0.05g; 6). Slowly adding the above mixture C to the silica sol to obtain a mixture D; 7). After adjusting the pH value of the mixture D to 7.4-7.6, heat it to 100°C and stir it at constant temperature for 60 minutes. After the reaction is completed, centrifuge and wash it until it is neutral, and then dry it to obtain nano aerogel.

[0014] Furthermore, in step 7), the acid-base system used to adjust the pH value is sodium bicarbonate and dilute sulfuric acid; and the particle size of the titanium dioxide nanoaerogel is 300-500 μm. Beneficial Effects

[0015] 1. The present invention adopts the process of blending plant fibers such as flax fiber, soybean protein fiber, apocynum fiber, bamboo charcoal fiber, and seaweed fiber, so that the blended fabric has excellent UVA and UPF values, has a certain sun protection function, and has excellent quick-drying properties. It also uses all-natural raw materials and is safe and environmentally friendly.

[0016] 2. The present invention enhances the hydrophilicity of the fabric by modifying the fiber structure, and utilizes the pore size of the microporous film to be between the diameters of water molecules and air molecules, so that water droplets cannot enter, but water molecules and air molecules can pass freely, giving the fabric waterproof and breathable functions.

[0017] 3. The present invention also applies titanium dioxide nano-aerogel to the extraction of plant extracts to improve the anti-ultraviolet performance of fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 It is a preparation flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides the following technical solution: a method for preparing natural sun-proof quick-drying clothing fabric using plant extracts, wherein the fabric is prepared by blending the following fibers in percentage by weight: 10% to 20% flax fiber, 10% to 20% soybean protein fiber, 55% to 70% apocynum fiber, 3% to 5% bamboo charcoal fiber, and 1% to 5% seaweed cellulose fiber; The specific steps include: S1: weigh corresponding flax fiber, soybean protein fiber, apocynum fiber, bamboo charcoal fiber and seaweed cellulose fiber; S2: taking out the fibers from the cotton bales in proportion, and performing the processes of cleaning, carding and spinning respectively to obtain the corresponding spun yarn; S3: blending and winding the spun yarns obtained from all the fibers to obtain blended spun yarns; S4: adopting seamless spinning process, the blended spun yarn is subjected to twisting, warping, sizing and weaving steps in sequence to form fabric, thereby obtaining corresponding blended fabric; S5: The blended fabric is scourged, dyed, post-finished, shaped and dried to prepare a sun-proof quick-drying fabric.

[0023] Furthermore, the fabric is specifically prepared by blending fibers in the following weight percentages: 15% flax fiber, 15% soybean protein fiber, 65% apocynum fiber, 5% bamboo charcoal fiber, and 3% seaweed cellulose fiber.

[0024] Furthermore, in the spinning process, the shape of the spinneret is changed to make the fiber cross-section irregular to increase the fiber surface area, and the fiber is blended with a special micropore former and then dissolved, so that there are many through pores from the fiber surface to the hollow part. By modifying the fiber structure, the hydrophilicity of the fabric is enhanced, and the pore size of the microporous film is between the diameters of water molecules and air molecules, so that water droplets cannot enter, but water molecules and air molecules can pass freely, giving the fabric waterproof and breathable functions.

[0025] Furthermore, the scouring and bleaching process comprises the following specific steps: S1: Pump the scouring and bleaching working solution into the dyeing vat, heat it to 25°C, put the blended fabric into the dyeing vat, heat it to 80°C, react for 2h, then take it out and cool it to normal pressure; S2: neutralize with soda ash, raise the temperature to 50°C, react for 1 hour to obtain a reacted mixed solution, and discharge the mixed solution; S3: Wash the blended fabric in clean water and then spin dry, and dehydrate to obtain the scouring and bleaching blended fabric.

[0026] Furthermore, the dyeing process comprises the following specific steps: S1: Add dye into the dye vat, heat it to 50℃ and then drain it; S2: Put the blended fabric into the dyeing vat, continue to raise the temperature to 50°C, keep it for 1 hour and then drain; S3: Use cold water to rinse the blended fabric for 5 minutes; S4: After dehydrating and drying the blended fabric, the blended fabric is placed in a centrifuge for centrifugal drying to obtain a dyed blended fabric.

[0027] Furthermore, the dye comprises the following components in weight percentage: 5% plant extract, 5% sodium carbonate, 5% sodium silicate, 6% dispersant, 6% penetrant, 5% wood cellulose, and the balance deionized water.

[0028] Furthermore, the plant extract is prepared from the following raw materials: honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel; The specific preparation process of the plant extract is as follows: S1: material selection: selecting a certain amount of honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel as raw materials; S2: Pretreatment: drying the honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel at 45° C. for 22 hours, grinding them for 3 hours, adding ethanol three times their weight, and soaking them at 65° C. for 8 hours to obtain honeysuckle ethanol solution, pomegranate seeds ethanol solution, tea leaves ethanol solution, cinnamon bark ethanol solution, and walnut peel ethanol solution; S3: mixing the honeysuckle ethanol solution, pomegranate seed ethanol solution, tea ethanol solution, cinnamon bark ethanol solution, and walnut peel ethanol solution, respectively adding the titanium dioxide nano aerogel, and stirring evenly to obtain a mixture A; S4: adjusting the pH value of the mixture A to 7 with dilute hydrochloric acid, conveying the mixture A with a pH value of 7 to an extraction kettle of an extraction device, introducing supercritical carbon dioxide, wherein the ratio of the mixture A to the supercritical carbon dioxide is 1 g:5 ml, heating the mixture to 160° C. at a rate of 5° C. / min in the extraction kettle and maintaining the temperature for 15 min, and then heating the mixture to 60° C. at a rate of 10° C. / min in the separation kettle, wherein the pressure in the extraction kettle is 40 MPa, and the pressure in the separation kettle is 5 MPa, to obtain a plant extract; S5: removing impurities and odors from the plant extract, and then spray-drying the plant extract to obtain a plant extract.

[0029] Furthermore, in step S2 of the dyeing process, the blended fabric is pretreated with sodium carbonate before being sent into the dyeing vat, and the specific process of the pretreatment is: the blended fabric and sodium carbonate are stirred and reacted with a stirrer; the mass ratio of the blended fabric and sodium carbonate is 1: (0.06-0.08); wherein the concentration of sodium carbonate is 0.3 g / L.

[0030] Furthermore, the addition amount of the titanium dioxide nano-aerogel accounts for 3 g / L of the total weight of the raw materials; the preparation process of the titanium dioxide nano-aerogel is: 1). Weigh water glass and toluene, heat to 70°C, and stir to mix evenly to obtain a mixed solution A; the mass ratio of the water glass to the toluene is 2:1; 2). Weigh tetraethyl orthosilicate and slowly add it to mixed solution A, and at the same time, drop hydrochloric acid. After the dropwise addition is complete and the mixture is stirred evenly, a mixed solution B is obtained; wherein the mass ratio of water glass, tetraethyl orthosilicate and hydrochloric acid is 1:1:1; 3). Weigh the surfactant, add it into the mixed solution B and stir until the silica sol is obtained; 4). Prepare a titanium hydroxide precursor solution, wherein the content of anhydrous sodium titanate is 13 mol / L and the content of anhydrous sodium silicate is 7 mol / L; 5). Weigh the titanate coupling agent, add the surfactant, add 25% ethanol aqueous solution to dilute, weigh the surfactant again, and add it to the above mixture to obtain a mixture C; wherein, silica sol: surfactant: titanate coupling agent = 30mL: 0.2g: 0.05g; 6). Slowly adding the above mixture C to the silica sol to obtain a mixture D; 7). After adjusting the pH value of the mixture D to 7.4-7.6, heat it to 100°C and stir it at constant temperature for 60 minutes. After the reaction is completed, centrifuge and wash it until it is neutral, and then dry it to obtain nano aerogel.

[0031] Furthermore, in step 7), the acid-base system used to adjust the pH value is sodium bicarbonate and dilute sulfuric acid; and the particle size of the titanium dioxide nanoaerogel is 300-500 μm.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing natural sun-proof quick-drying clothing fabric using plant extracts, characterized in that: The fabric is prepared by blending the following fibers in percentage by weight: 10% to 20% flax fiber, 10% to 20% soybean protein fiber, 55% to 70% apocynum fiber, 3% to 5% bamboo charcoal fiber, and 1% to 5% seaweed cellulose fiber; The specific steps include: S1: weigh corresponding flax fiber, soybean protein fiber, apocynum fiber, bamboo charcoal fiber and seaweed cellulose fiber; S2: taking out the fibers from the cotton bales in proportion, and performing the processes of cleaning, carding and spinning respectively to obtain the corresponding spun yarn; S3: blending and winding the spun yarns obtained from all the fibers to obtain blended spun yarns; S4: adopting seamless spinning process, sequentially subjecting the blended spun yarn to twisting, warping, sizing and weaving steps to form fabric, thereby obtaining corresponding blended fabric; S5: The blended fabric is scourged, dyed, post-finished, shaped and dried to prepare a sun-proof quick-drying fabric.

2. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 1, characterized in that: The fabric is specifically prepared by blending fibers in the following weight percentages: 15% flax fiber, 15% soybean protein fiber, 65% apocynum fiber, 5% bamboo charcoal fiber, and 3% seaweed cellulose fiber.

3. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 1, characterized in that: In the spinning process, the shape of the spinneret hole is changed to make the fiber cross section irregular so as to increase the fiber surface area, and the fiber is blended with a special micropore forming agent and then dissolved.

4. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 1, characterized in that: The scouring and bleaching process comprises the following specific steps: S1: Pump the scouring and bleaching working solution into the dyeing vat, heat it to 25°C, put the blended fabric into the dyeing vat, heat it to 80°C, react for 2h, then take it out and cool it to normal pressure; S2: neutralize with soda ash, raise the temperature to 50°C, react for 1 hour to obtain a reacted mixed solution, and discharge the mixed solution; S3: Wash the blended fabric in clean water and spin dry, and dehydrate to obtain the scouring and bleaching blended fabric.

5. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 1, characterized in that: The dyeing process comprises the following specific steps: S1: Add dye into the dye vat, heat it to 50℃ and then drain it; S2: Put the blended fabric into the dyeing vat, continue to raise the temperature to 50°C, keep it for 1 hour and then drain; S3: Use cold water to rinse the blended fabric for 5 minutes; S4: After dehydrating and drying the blended fabric, the blended fabric is placed in a centrifuge for centrifugal drying to obtain a dyed blended fabric.

6. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 5, characterized in that: The dye comprises the following components in percentage by weight: 5% plant extract, 5% sodium carbonate, 5% sodium silicate, 6% dispersant, 6% penetrant, 5% wood cellulose, and the balance deionized water.

7. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 6, characterized in that: The plant extract is prepared from the following raw materials: honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel; The specific preparation process of the plant extract is as follows: S1: material selection: selecting a certain amount of honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel as raw materials; S2: Pretreatment: drying the honeysuckle, pomegranate seeds, tea leaves, cinnamon bark, and walnut peel at 45° C. for 22 hours, grinding them for 3 hours, adding ethanol three times their weight, and soaking them at 65° C. for 8 hours to obtain honeysuckle ethanol solution, pomegranate seeds ethanol solution, tea leaves ethanol solution, cinnamon bark ethanol solution, and walnut peel ethanol solution; S3: mixing the honeysuckle ethanol solution, pomegranate seed ethanol solution, tea ethanol solution, cinnamon bark ethanol solution, and walnut peel ethanol solution, respectively adding the titanium dioxide nano aerogel, and stirring evenly to obtain a mixture A; S4: adjusting the pH value of the mixture A to 7 with dilute hydrochloric acid, conveying the mixture A with a pH value of 7 to an extraction kettle of an extraction device, introducing supercritical carbon dioxide, wherein the ratio of the mixture A to the supercritical carbon dioxide is 1 g:5 ml, heating the mixture to 160° C. at a rate of 5° C. / min in the extraction kettle and maintaining the temperature for 15 min, and then heating the mixture to 60° C. at a rate of 10° C. / min in the separation kettle, wherein the pressure in the extraction kettle is 40 MPa, and the pressure in the separation kettle is 5 MPa, to obtain a plant extract; S5: removing impurities and odors from the plant extract, and then spray-drying the plant extract to obtain a plant extract.

8. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 5, characterized in that: In step S2 of the dyeing process, the blended fabric is pretreated with sodium carbonate before being sent into the dyeing vat. The specific process of the pretreatment is: the blended fabric and sodium carbonate are stirred and reacted with a stirrer; the mass ratio of the blended fabric and sodium carbonate is 1: (0.06-0.08); wherein the concentration of sodium carbonate is 0.3 g / L.

9. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 1, characterized in that: The addition amount of the titanium dioxide nano-aerogel accounts for 3g / L of the total weight of the raw materials; the preparation process of the titanium dioxide nano-aerogel is: 1). Weigh water glass and toluene, heat to 70°C, and stir to mix evenly to obtain a mixed solution A; the mass ratio of the water glass to the toluene is 2:1; 2). Weigh tetraethyl orthosilicate and slowly add it to mixed solution A, and at the same time, drop hydrochloric acid. After the dropwise addition is complete and the mixture is stirred evenly, a mixed solution B is obtained; wherein the mass ratio of water glass, tetraethyl orthosilicate and hydrochloric acid is 1:1:1; 3). Weigh the surfactant, add it into the mixed solution B and stir until the silica sol is obtained; 4). Prepare a titanium hydroxide precursor solution, wherein the content of anhydrous sodium titanate is 13 mol / L and the content of anhydrous sodium silicate is 7 mol / L; 5). Weigh the titanate coupling agent, add the surfactant, add 25% ethanol aqueous solution to dilute, weigh the surfactant again, and add it to the above mixture to obtain a mixture C; wherein, silica sol: surfactant: titanate coupling agent = 30mL: 0.2g: 0.05g; 6). Slowly adding the above mixture C to the silica sol to obtain a mixture D; 7). After adjusting the pH value of the mixture D to 7.4-7.6, heat it to 100°C and stir it at constant temperature for 60 minutes. After the reaction is completed, centrifuge and wash it until it is neutral, and then dry it to obtain nano aerogel.

10. The method for preparing natural sun-proof quick-drying clothing fabric using plant extracts according to claim 9, characterized in that: In the step 7), the acid-base system used to adjust the pH value is sodium bicarbonate and dilute sulfuric acid; the particle size of the titanium dioxide nano-aerogel is 300-500 μm.

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