Preparation method of anti-mosquito fabric and anti-mosquito fabric prepared by method

Abstract

The invention relates to the technical field of textile, and particularly discloses a preparation method of an anti-mosquito fabric and the anti-mosquito fabric prepared by the method, and the preparation method specifically comprises the following steps: S1, adding trehalose, an anti-mosquito agent and an emulsifier into water, performing uniform ultrasonic dispersion, adding sodium tripolyphosphate, and performing stirring reaction for a period of time to obtain a trehalose microcapsule solution; s2, carrying out activating treatment on mono-6-amino-6-deoxy-beta-cyclodextrin by adopting an activating agent, adding the activated mono-6-amino-6-deoxy-beta-cyclodextrin into a trehalose microcapsule solution, carrying out stirring reaction for a period of time, then adding 2, 3-dihydroxybenzoic acid, carrying out heating reaction, and carrying out spray drying, so as to obtain an anti-mosquito microcapsule; s3, adding the anti-mosquito microcapsules into water, performing uniform ultrasonic dispersion to obtain anti-mosquito microcapsule dispersion liquid, soaking the fabric in the anti-mosquito microcapsule dispersion liquid, and drying to obtain the anti-mosquito fabric. The anti-mosquito fabric prepared by the preparation method disclosed by the invention has a relatively high mosquito repelling rate and a long-acting mosquito repelling effect.

Description

Technical Field

[0001] The present application relates to the field of textile technology, and more specifically, to a method for preparing a mosquito-proof fabric and the mosquito-proof fabric prepared by the method. Background Art

[0002] In daily life and outdoor activities, mosquito bites have always been a common problem faced by people. Mosquito bites not only cause skin redness, swelling and itching, but also may spread diseases such as malaria and dengue fever, posing a threat to people's health. Therefore, the development of fabrics with anti-mosquito function has important practical significance and application value.

[0003] Anti-mosquito technology has gone through multiple stages from natural material extraction to chemical synthesis, and then to the combination of physical and biological technologies. As early as the late 19th century and early 20th century, scientists began to explore the use of natural plant extracts such as neem seed methanol extract to repel mosquitoes. With the development of the chemical industry, a series of highly effective chemical mosquito repellents such as dichlorvos, dichlorvos, and DEET have been introduced one after another. These mosquito repellents have been widely used around the world for their excellent mosquito repellent effect and long duration.

[0004] Entering the 21st century, with the enhancement of environmental awareness and consumers' emphasis on health and safety, researchers have begun to explore more environmentally friendly and low-toxic mosquito repellent technologies. Physical mosquito repellent methods such as sonic and light wave mosquito repellents have gradually attracted attention. At the same time, the application of nanotechnology and microcapsule technology has also provided new ideas for the development of mosquito repellent fabrics.

[0005] Anti-mosquito fabrics mainly achieve their anti-mosquito function through the following principles:

[0006] Chemical mosquito repellent: Spray or dip mosquito repellents such as DEET and chlorpyrifos onto fabrics, and the effective ingredients of the mosquito repellents evaporate to achieve the mosquito repellent effect. This method has the advantages of fast and obvious effects, but attention should be paid to the toxicity and durability of mosquito repellents.

[0007] Physical mosquito repellent: Use the fiber structure or surface treatment of fabrics to block the entry of mosquitoes. For example, use fabrics with small fiber gaps to prevent mosquitoes from passing through; or use special materials to make the fabric have the ability to inhibit mosquito bites. This method is relatively environmentally friendly, but may be limited by the density and structure of the fabric.

[0008] Sonic mosquito repellent: An ultrasonic generator is integrated into the fabric to emit sound waves with a frequency higher than the human hearing range, which interferes with mosquitoes and prevents them from approaching the human body. This method is novel and environmentally friendly, but the actual effect may be affected by environmental factors.

[0009] Nanotechnology mosquito repellent: Processing nanomaterials into fabrics, releasing mosquito repellent compounds through the special properties of nanomaterials. This method combines the advantages of nanotechnology and can achieve long-lasting and high efficiency of mosquito repellent effect.

[0010] Microcapsule technology: The mosquito repellent or insecticide is encapsulated by microcapsule technology to form tiny particles and attached to the fabric. The microcapsule releases the active ingredients under appropriate conditions to achieve the purpose of mosquito repellent or insecticide.

[0011] Among them, microcapsule anti-mosquito fabric, as a new type of fabric that combines microcapsule technology with anti-mosquito function, has a series of unique advantages: efficient and lasting anti-mosquito effect, environmental protection and low toxicity, and increased added value of fabrics, etc. However, while providing effective anti-mosquito function, microcapsule anti-mosquito fabric also has some potential disadvantages, such as washing fastness. Although anti-mosquito fabrics are usually specially treated to improve their washing fastness, after multiple washings, the active ingredients in the microcapsules may be gradually released or ineffective, resulting in a weakened anti-mosquito effect.

[0012] Therefore, the washing fastness of mosquito-proof fabrics is an issue that needs attention. Summary of the invention

[0013] In order to solve the above technical problems, the present application provides a method for preparing a mosquito-proof fabric and the mosquito-proof fabric prepared by the method. The present application grafts and modifies the surface of trehalose microcapsules, giving the mosquito-proof microcapsules with trehalose as the wall material extremely high adhesion properties, and can achieve long-term adhesion on cotton and other fabrics without the aid of adhesives. The obtained mosquito-proof fabric has high washing fastness, excellent mosquito-proof effect and long service life.

[0014] In a first aspect, the present application provides a method for preparing a mosquito-proof fabric, using the following technical solution:

[0015] A method for preparing a mosquito-proof fabric comprises the following steps:

[0016] S1, adding trehalose, mosquito repellent and emulsifier into water, and after ultrasonic dispersion, adding sodium tripolyphosphate, stirring and reacting for a period of time, obtaining trehalose microcapsule solution;

[0017] S2, using an activator to activate mono-6-amino-6-deoxy-β-cyclodextrin, adding the activated mono-6-amino-6-deoxy-β-cyclodextrin to the trehalose microcapsule solution, stirring and reacting for a period of time, then adding 2,3-dihydroxybenzoic acid, heating for reaction, and spray drying to obtain mosquito repellent microcapsules;

[0018] S3, adding the anti-mosquito microcapsules into water, uniformly dispersing them by ultrasonication to obtain an anti-mosquito microcapsule dispersion liquid, immersing the fabric in the anti-mosquito microcapsule dispersion liquid, and drying the fabric.

[0019] 2,3-Dihydroxybenzoic acid contains catechol groups and has extremely strong adhesion properties. It can be combined with fabrics through covalent and non-covalent bonds and firmly adsorbed on the surface of the fabric; mono-6-amino-6-deoxy-β-cyclodextrin is obtained by amino modification of β-cyclodextrin, which can be protonated under neutral or acidic pH conditions, has good complexing ability with negatively charged guest molecules, has good water solvent properties, and can be physically adsorbed and amidated with 2,3-dihydroxybenzoic acid, so that it can stably exist on the surface of the microcapsule and give the microcapsule a higher adhesion ability, thereby giving the mosquito-proof fabric a higher washing fastness and increasing the mosquito-proof life of the fabric.

[0020] Furthermore, the weight ratio of the trehalose, the mosquito repellent and the emulsifier is 1:(0.5-1):(0.1-0.5).

[0021] Preferably, the weight ratio of the trehalose, the mosquito repellent and the emulsifier is 1:1:0.5.

[0022] Furthermore, the mosquito repellent adopts pyrethroid compounds, and the pyrethroid compounds include cypermethrin, deltamethrin, permethrin, tetramethrin, resmethrin, methylthrin and the like.

[0023] Preferably, the mosquito repellent is permethrin, and the content of permethrin on the fabric is 0.05-0.4 g / m 2 , 0.4-0.8g / m 2 or 0.8-1g / m 2 .

[0024] Furthermore, the emulsifier is at least one of Tween 80, polyethylene glycol-400 and polyethylene glycol-600.

[0025] Preferably, the emulsifier is Tween 80.

[0026] Furthermore, the dosage ratio of trehalose to water is 1g:50-100mL.

[0027] Preferably, the ratio of trehalose to water is 1 g:50 mL.

[0028] Furthermore, the activator is a mixture of p-toluenesulfonyl chloride or N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride.

[0029] Preferably, the activator is a mixture of N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride.

[0030] Preferably, the weight ratio of N-hydroxysuccinimide to 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride is 1:(1.5-2). More preferably, the weight ratio of N-hydroxysuccinimide to 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride is 1:1.6.

[0031] Furthermore, the weight ratio of the mono-6-amino-6-deoxy-β-cyclodextrin to the activator is 1:(0.5-1.5).

[0032] Preferably, the weight ratio of the mono-6-amino-6-deoxy-β-cyclodextrin to the activator is 1:1.

[0033] Furthermore, the weight ratio of the mono-6-amino-6-deoxy-β-cyclodextrin to 2,3-dihydroxybenzoic acid is 1:(0.5-2).

[0034] Preferably, the weight ratio of mono-6-amino-6-deoxy-β-cyclodextrin to 2,3-dihydroxybenzoic acid is 1:1.

[0035] Furthermore, the fabric is one of cotton, Tencel, Modal, blended cotton, polyester, and polyurethane.

[0036] Preferably, the fabric is made of cotton fiber. The fabric can be used for outdoor products, clothing and bedding to provide mosquito repellent, including tents, clothing worn by field workers, mosquito nets on beds, etc.

[0037] Furthermore, in step S3, the dipping is performed in a dipping-and-rolling manner, and the rolling rate is 70-80%.

[0038] Furthermore, the drying method is: pre-drying at 60-80°C for 5-10 minutes, and then drying at 100-120°C for 5-10 minutes.

[0039] Furthermore, the concentration of the anti-mosquito microcapsule dispersion is 2-10 g / L in terms of mass fraction.

[0040] Furthermore, the fabric is also subjected to acid treatment before impregnation. Acid treatment of the fabric surface can increase the roughness and active reaction groups on the fabric surface, thereby improving the binding force between the microcapsules and the fabric fibers.

[0041] Preferably, the acid used in the acid treatment is citric acid or butanetetracarboxylic acid, and the concentration of the acid is 0.1-0.5 mol / L.

[0042] Furthermore, during the spray drying process, the material flow rate is 50-100 g / min, the pressure is 2-7 bar, and the temperature is 100-120°C.

[0043] In a second aspect, the present application provides an anti-mosquito microcapsule, which is prepared by the above-mentioned preparation method. The anti-mosquito microcapsule has excellent adhesion performance and has high washing fastness after being attached to the fabric.

[0044] In a third aspect, the present application provides a mosquito-proof fabric, which is prepared by the method for preparing the mosquito-proof fabric. The mosquito-proof fabric has an extremely high mosquito repellency rate and high washability and mosquito-proof fastness, and still maintains an extremely high mosquito repellency rate after several washes.

[0045] In summary, this application has the following beneficial effects:

[0046] (1) The present application uses bio-based materials such as trehalose to prepare mosquito-proof microcapsules, which not only achieve long-term adhesion of the mosquito-proof microcapsules on the fabric, but also do not affect the basic properties of the fabric such as the feel and comfort. In addition, the material is green and degradable, environmentally friendly and harmless to the human body.

[0047] (2) The anti-mosquito microcapsules prepared in the present application can achieve extremely high adhesion and long-lasting adhesion on the surface of fabrics without the aid of chemical adhesives, thus avoiding the damage of chemical adhesives to the feel and surface quality of fabrics, improving the quality of fabrics, and having broad market prospects. DETAILED DESCRIPTION

[0048] The present application is further described in detail below with reference to the embodiments.

[0049] The present application provides a method for preparing mosquito-proof microcapsules, the specific steps of which are:

[0050] Trehalose, mosquito repellent and emulsifier are added into water, and after being evenly dispersed by ultrasonic, sodium tripolyphosphate is added, and after stirring and reacting for a period of time, a trehalose microcapsule solution is obtained;

[0051] The mono-6-amino-6-deoxy-β-cyclodextrin is activated by using an activator, and the activated mono-6-amino-6-deoxy-β-cyclodextrin is added to a trehalose microcapsule solution, stirred for a period of time, and then 2,3-dihydroxybenzoic acid is added, heated for reaction, and spray-dried to obtain mosquito-proof microcapsules;

[0052] The present application also provides a method for attaching anti-mosquito microcapsules to the surface of fabrics, the specific steps of which are:

[0053] The anti-mosquito microcapsules are added into water and dispersed uniformly by ultrasonic to obtain anti-mosquito microcapsule dispersion liquid. The anti-mosquito microcapsule dispersion liquid is immersed in the anti-mosquito microcapsule dispersion liquid by a dipping and rolling method with a rolling rate of 70-80%. The fabric is pre-dried at 60-80°C for 5-10 minutes and then dried at 100-120°C for 5-10 minutes to obtain the anti-mosquito microcapsule dispersion liquid.

[0054] The sources of some raw materials used in the examples and comparative examples of the present application are shown in Table 1.

[0055] Table 1

[0056]

[0057]

[0058] Embodiment 1-6 Anti-mosquito fabric:

[0059] S1, according to the proportion of each group in Table 1, trehalose was dissolved in 100 mL of water, permethrin and Tween 80 were added, and ultrasonication was performed at 250 W for 20 min. After uniform dispersion, sodium tripolyphosphate was added, and the mixture was stirred at 800 r / min for 1 h to obtain a trehalose microcapsule solution;

[0060] S2, dissolving mono-6-amino-6-deoxy-β-cyclodextrin in 100 mL of water, adding an activator, stirring and activating for 1 hour, and adding the activated mono-6-amino-6-deoxy-β-cyclodextrin to the trehalose microcapsule solution, stirring at 150 r / min for 6 hours, continuing to add 2,3-dihydroxybenzoic acid, heating to 60° C. and stirring for 2 hours, spray drying the solution at a material flow rate of 50 g / min, a pressure of 5 bar, and a temperature of 100° C. to obtain mosquito repellent microcapsules;

[0061] S3, immersing a 30 cm*30 cm cotton fabric in a 0.5 mol / L citric acid aqueous solution for 10 min, taking it out and washing it with water three times and drying it;

[0062] S4, disperse the prepared anti-mosquito microcapsules in 500mL of water, and ultrasonicate at 300W for 5min to obtain an anti-mosquito microcapsule dispersion, and impregnate the cotton fabric treated with citric acid in a one-immersion-one-rolling manner with a rolling rate of 70%, and then pre-dry at 80°C for 5min, and then dry at 100°C for 10min to obtain the anti-mosquito microcapsule dispersion.

[0063] Table 2 (unit: g)

[0064]

[0065]

[0066] Embodiment 7 Anti-mosquito fabric:

[0067] S1, according to the distribution ratio of each group in Table 1, trehalose was dissolved in 100 mL of water, permethrin and Tween 80 were added, and ultrasonication was performed at 250 W for 20 min. After uniform dispersion, sodium tripolyphosphate was added, and the mixture was stirred at 600 r / min for 1.5 h to obtain a trehalose microcapsule solution;

[0068] S2, dissolving mono-6-amino-6-deoxy-β-cyclodextrin in 100 mL of water, adding an activator, stirring and activating for 0.5 h, and adding the activated mono-6-amino-6-deoxy-β-cyclodextrin to the trehalose microcapsule solution, stirring at 150 r / min for 10 h, continuing to add 2,3-dihydroxybenzoic acid, heating to 60° C. and stirring for 3 h, spray drying the solution at a material flow rate of 70 g / min, a pressure of 4 bar, and a temperature of 100° C. to obtain mosquito repellent microcapsules;

[0069] S3, disperse the prepared anti-mosquito microcapsules in 500mL of water, ultrasonicate at 300W for 5min to obtain an anti-mosquito microcapsule dispersion, impregnate a 30cm*30cm cotton fabric in a one-immersion-one-rolling manner with a rolling rate of 80%, then pre-dry at 80°C for 5min, and then dry at 100°C for 10min to obtain the anti-mosquito microcapsule dispersion.

[0070] Comparative Example 1 Fabric:

[0071] Dissolve 0.5 g of permethrin in 500 mL of water, stir and disperse evenly to obtain a permethrin dispersion, and dip a 30 cm*30 cm cotton fabric into the permethrin dispersion in a dipping and rolling method with a rolling rate of 70%, and then pre-dry at 80°C for 5 min, and then dry at 100°C for 10 min to obtain the permethrin dispersion.

[0072] Comparative Example 2 Fabric:

[0073] S1, dissolve 1g trehalose in 100mL water, add 0.5g permethrin and 0.1g Tween 80 and ultrasonicate at 250w for 20min. After uniform dispersion, add 0.1g sodium tripolyphosphate, stir and react at 800r / min for 1h to obtain trehalose microcapsule solution, spray dry the solution at a material flow rate of 50g / min, a pressure of 5bar and a temperature of 100℃ to obtain mosquito repellent microcapsules;

[0074] S3, disperse the prepared anti-mosquito microcapsules in 500mL of water, ultrasonicate at 300W for 5min to obtain an anti-mosquito microcapsule dispersion, impregnate a 30cm*30cm cotton fabric in a one-immersion-one-rolling manner with a rolling rate of 70%, then pre-dry at 80°C for 5min, and then dry at 100°C for 10min to obtain the anti-mosquito microcapsule dispersion.

[0075] Comparative Example 3 Fabric:

[0076] S1, dissolve 1g trehalose in 100mL water, add 0.5g permethrin and 0.1g Tween 80 and ultrasonicate at 250w for 20min. After uniform dispersion, add 0.1g sodium tripolyphosphate, stir and react at 800r / min for 1h to obtain trehalose microcapsule solution, spray dry the solution at a material flow rate of 50g / min, a pressure of 5bar and a temperature of 100℃ to obtain mosquito repellent microcapsules;

[0077] S3, disperse the prepared anti-mosquito microcapsules in 500 mL of water, add 5 g of BASF aqueous acrylate dispersion as a binder, and ultrasonicate at 300 W for 5 min to obtain the anti-mosquito microcapsule dispersion, and impregnate a 30 cm*30 cm cotton fabric using a one-immersion-one-rolling method with a rolling rate of 70%, and then pre-dry at 80° C. for 5 min, and then dry at 100° C. for 10 min to obtain the anti-mosquito microcapsule dispersion.

[0078] Performance testing

[0079] Test a, mosquito repellent effect when not washed: According to T / CTCA3-2017 "Permethrin Mosquito Repellent Fabric", the number of mosquitoes that stayed on the hands of volunteers for more than 5 seconds in the control sample, the embodiment test sample or the comparative example test sample was tested successively, and the avoidance rate = (the number of mosquitoes staying in the control sample - the number of mosquitoes staying in the test sample) / the number of mosquitoes staying in the control sample was recorded, and the results were recorded in Table 2.

[0080] Control sample: Put 50 Aedes albopictus in a mosquito cage, wrap the volunteer's hand with the control sample, and wrap the hand above the wrist with a thick cloth to isolate the smell. Put the hand into the mosquito cage and record the number of mosquitoes that come and stay for more than 5 seconds within 2 minutes.

[0081] Test sample: Put a layer of the test sample of the embodiment or comparative example on the hand of the volunteer, and wrap it above the wrist with thick cloth to isolate the smell. Put the hand into the mosquito cage, and record the number of mosquitoes that stay on the test sample for more than 5 seconds within 2 minutes.

[0082] Test b, mosquito repellent effect after washing: According to GB / T 8629-2001 "Household Washing and Drying Procedure for Textile Testing", the mosquito repellent fabrics obtained in each embodiment and the comparative example fabrics are taken in the same size and shape and placed in the same washing machine, and the same amount of the same type of laundry detergent is used. The machine washing is repeated 20 times under the same conditions and the same time is dried at the same temperature. After drying, the mosquito repellent effect is repeated, and the repellency rate is recorded. The results are recorded in Table 3.

[0083] Test c, mosquito repellent retention effect after washing: mosquito repellent retention rate after washing = mosquito repellent rate after washing / mosquito repellent rate before washing

[0084] Table 3

[0085]

[0086] It can be seen from the test results in Table 3 that the mosquito-proof fabric prepared in the present application has excellent initial mosquito-proof effect and mosquito-proof washing fastness: the repellency rate before washing reaches 95.9-100%, and the repellency rate after washing 20 times reaches 80.4-86.1%, which is far higher than the AA-level product defined in T / CTCA3-2017 "Permethrin Mosquito-proof Fabric" (repellency rate of 70% before washing and repellency rate of 40% after washing). The mosquito-proof retention rate after washing is 83.6-86.1%, and the fabric still feels soft after machine washing 20 times.

[0087] Compared with Example 1, Comparative Example 1 directly adopts the method of impregnating the fabric with the permethrin dispersion. Although the initial repellency rate of the fabric is high, the repellency rate after washing 20 times is only 7.2%, which has basically no mosquito repellent effect.

[0088] Compared with Example 1, the anti-mosquito microcapsules in Comparative Example 2 have not undergone surface modification treatment, so their ability to adhere to the fabric is poor, the repellency rate after washing is poor, and there is no mosquito repellent effect; and because of the wall material coating, the mosquito repellency rate of the fabric before washing is also poor.

[0089] Compared with Example 1, although the anti-mosquito microcapsules in Comparative Example 3 have not been surface-modified, acrylic adhesives are added to make the anti-mosquito microcapsules have a certain degree of adhesion, and the mosquito repellent rate of the fabric before washing reaches 98.7%; however, the adhesive has poor water washing fastness. After 20 machine washings, the anti-mosquito repellent rate of the fabric is only 47.2%, and because of the acrylic adhesive, after 20 machine washings, the feel of the fabric is poor, showing a stiff appearance.

[0090] The above is only the preferred implementation of the present application. The protection scope of the present application is not limited to the above embodiments. All technical solutions under the concept of the present application belong to the protection scope of the present application. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present application should also be regarded as the protection scope of the present application.

Claims

1. A method for preparing mosquito-proof fabric, characterized in that: The following steps are involved: S1, adding trehalose, mosquito repellent and emulsifier into water, and after ultrasonic dispersion, adding sodium tripolyphosphate, stirring and reacting for a period of time, obtaining trehalose microcapsule solution; S2, using an activator to activate mono-6-amino-6-deoxy-β-cyclodextrin, adding the activated mono-6-amino-6-deoxy-β-cyclodextrin to the trehalose microcapsule solution, stirring and reacting for a period of time, then adding 2,3-dihydroxybenzoic acid, heating for reaction, and spray drying to obtain mosquito repellent microcapsules; S3, adding the anti-mosquito microcapsules into water, uniformly dispersing them by ultrasonication to obtain an anti-mosquito microcapsule dispersion liquid, immersing the fabric in the anti-mosquito microcapsule dispersion liquid, and drying the fabric.

2. The method for preparing the mosquito-proof fabric according to claim 1, characterized in that: The weight ratio of the trehalose, the mosquito repellent and the emulsifier is 1:(0.5-1):(0.1-0.5).

3. The method for preparing the mosquito-proof fabric according to claim 2, characterized in that: The mosquito repellent adopts pyrethroid compounds, and the emulsifier adopts at least one of Tween 80, polyethylene glycol-400 and polyethylene glycol-600.

4. The method for preparing the mosquito-proof fabric according to claim 1, characterized in that: The activator is a mixture of p-toluenesulfonyl chloride or N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride.

5. The method for preparing the mosquito-proof fabric according to claim 4, characterized in that: The activator is a mixture of N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, and the weight ratio of the N-hydroxysuccinimide to the 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride is 1:(1.5-2).

6. The method for preparing the mosquito-proof fabric according to claim 1, characterized in that: The weight ratio of the mono-6-amino-6-deoxy-β-cyclodextrin to the activator is 1:(0.5-1.5).

7. The method for preparing the mosquito-proof fabric according to claim 1, characterized in that: The weight ratio of the mono-6-amino-6-deoxy-β-cyclodextrin to 2,3-dihydroxybenzoic acid is 1:(0.5-2).

8. The method for preparing the mosquito-proof fabric according to claim 1, characterized in that: The fabric is also treated with an acid before impregnation, the acid being citric acid or butanetetracarboxylic acid.

9. A mosquito-proof microcapsule, characterized in that: The anti-mosquito microcapsules are prepared by the preparation method according to any one of claims 1 to 8.

10. A mosquito-proof fabric, characterized in that: The anti-mosquito fabric is prepared by the preparation method according to any one of claims 1 to 8.

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