Antibacterial and allergy-free textile fabric and preparation process thereof

Abstract

The invention relates to the technical field of textile fabrics, in particular to an antibacterial and allergy-free textile fabric and a preparation process thereof.The preparation process includes the following steps that S1, pure cotton or cotton blended base cloth is soaked in a sodium carbonate aqueous solution, washed to be neutral after heat treatment and dried, and pretreated base cloth is obtained; s2, dispersing alkannin nanocapsules in deionized water to obtain dispersion liquid, adding water-soluble epoxy resin and a penetrating agent, and stirring at room temperature to obtain finishing liquid; s3, soaking the pretreated base cloth into the finishing liquid, stirring and soaking at a controlled temperature, soaking twice and rolling twice, and drying to obtain the antibacterial allergy-free textile fabric. Through the pretreatment process, the surface performance of the base cloth is improved, impurities and roughness of the surface of the base cloth are reduced, and irritation to skin is reduced. Meanwhile, the components in the finishing liquid can be tightly combined with fibers of the base cloth, so that the occurrence probability of anaphylactic reaction is reduced, and the wearing comfort and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile fabrics, in particular to an antibacterial and anti-allergic textile fabric and a preparation process thereof. BACKGROUND

[0002] Antibacterial fabrics have shown wide application potential in medical, home, sports and outdoor fields due to their unique antibacterial properties, and the market demand is showing a growing trend. In the medical field, antibacterial fabrics are widely used in surgical gowns, bed sheets, masks and protective clothing, effectively reducing the risk of hospital infection and providing a strong guarantee for medical safety. With the continuous improvement of public health awareness, the application of antibacterial fabrics in household products is also increasingly popular, such as bedding, towels and curtains, etc. Through antibacterial treatment, the growth of bacteria is significantly reduced, creating a healthier and safer home environment for consumers. In addition, in the field of sports and outdoor, through antibacterial treatment of sports clothing, sports shoes, sports bags, tents, sleeping bags, outdoor clothing and other products, the growth of bacteria during exercise is effectively inhibited, not only improving the hygiene performance of the products, but also significantly enhancing the comfort of the wearer. Traditionally, antibacterial fabrics mainly rely on physical methods, such as using the antibacterial properties of silver ions, zinc ions and other nanomaterials to achieve antibacterial effect.

[0003] In the prior art, the addition of silver ions and other physical adsorption type antibacterial agents in the fabric is easy to dissolve or fall off after multiple washes, resulting in a significant decrease in antibacterial performance. At the same time, nanometer metal ions may be oxidized or agglomerated under light, sweat or high temperature environment, reducing the antibacterial activity. In addition, high-efficiency broad-spectrum antibacterial agents such as organic halides often have high sensitization; while the antibacterial strength of low-sensitization natural antibacterial agents such as chitosan is weak and the durability is poor. SUMMARY

[0004] In order to solve the problems mentioned in the background art, the present application provides an antibacterial and anti-allergic textile fabric and a preparation process thereof.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: A preparation process of an antibacterial and anti-allergic textile fabric, comprising the following steps: S1, dipping pure cotton or cotton blended base cloth in sodium carbonate aqueous solution, heat treating for 20-40 min, washing to neutral, and drying at 80-100℃ to obtain a pretreated base cloth; S2, dispersing baphicacanthin nanocapsules in deionized water to obtain a dispersion liquid, adding water-soluble epoxy resin and penetrating agent, stirring at room temperature for 30-60 min to obtain a finishing liquid; S3. Immerse the pretreated base fabric in the finishing liquid, control the temperature and stir to immerse for 40-80 minutes, perform two immersions and two rollings until the rolling rate reaches 70-90%, pre-bake at 80-100°C for 3-8 minutes, bake at 150-180°C for 1.5-3.5 minutes, wash with warm water at 40°C for 2-3 times, and then dry at 60-80°C to obtain an antibacterial and anti-allergic textile fabric.

[0006] Furthermore, the two-dip and two-rolling include first dip and first rolling, second dip and rolling and final rolling adjustment. The dipping conditions of the first dip and first rolling are: temperature of 30±2°C, time of 10-20min, stirring speed of 60-80rpm, rolling parameters of the rolling mill are: rolling pressure of 0.30-0.40MPa, cloth speed of 10-12m / min, and rolling rate control of 85±5%; the dipping conditions of the second dip and rolling are: temperature of 30±2°C, time of 15-25min, base cloth flipped 180°, rolling parameters of the rolling mill are: rolling pressure of 0.35-0.45MPa, cloth speed of 10-12m / min, and rolling rate control of 75±5%; during the final rolling adjustment, if the rolling rate is greater than 90%, the pressure is increased to 0.40MPa or the cloth speed is reduced to 8m / min; if the rolling rate is less than 70%, the pressure is reduced to 0.25MPa or the dipping time is increased by 5min.

[0007] Furthermore, in step S1, the concentration of the sodium carbonate aqueous solution is 1-2 wt %, the bath ratio is 1:(15-25), and the heat treatment temperature is 60-70°C.

[0008] Furthermore, in step S2, the water-soluble epoxy resin includes one or more of polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether and glycerol polyoxypropylene triglycidyl ether, and the penetrant includes one or more of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether and isomeric alcohol polyoxyethylene ether.

[0009] Furthermore, in step S2, the mass ratio of shikonin nanocapsules, deionized water, water-soluble epoxy resin and penetrant is (15-20):100:(3-5):(1-3).

[0010] Furthermore, in step S3, the bath ratio is 1:(18-20), the temperature of the temperature control is 40-45° C., the stirring speed in step S2 is 200-300 rpm, and the stirring speed in step S3 is 50-100 rpm.

[0011] Furthermore, the shikonin nanocapsules in step S2 are prepared by the following steps: A1, dissolve ammonium molybdate tetrahydrate in 0.1M phosphate buffer, add shikonin ethanol solution under light-proof condition, ultrasonic dispersion for 15-25min, add sodium citrate, water bath stirring reaction for 4-5h, centrifugal, discard supernatant, filter cake is washed with deionized water 3 times, vacuum drying at 40 DEG C for 6-8h, the modified shikonin is obtained; A2, ultrasonic dispersion of dopamine hydrochloride in Tris-HCl buffer for 5-10min, add modified shikonin under light-proof condition, stirring reaction at room temperature for 6-8h, centrifugal, filter cake is washed with deionized water 3 times, vacuum drying at 40 DEG C to constant weight, a dark brown powder is obtained.

[0012] Further, the mass ratio of ammonium molybdate tetrahydrate, phosphate buffer, shikonin ethanol solution and sodium citrate in step A1 is (2.5-4) :(100-110) :(30-40) :(0.15-0.3), the pH value of phosphate buffer is 7.2-7.6, and the concentration of shikonin ethanol solution is 10-15wt%.

[0013] Further, the mass ratio of dopamine hydrochloride, Tris-HCl buffer and modified shikonin in step A2 is (0.3-0.4) :(150-200) :(5-7), and the pH value of Tris-HCl buffer is 8.5-8.8.

[0014] Further, the temperature of water bath in step A1 is 38-42 DEG C, the stirring speed in step A1 and step A2 is 300-400rpm, the ultrasonic treatment frequency is 40-50kHz, and the power is 200-300W.

[0015] According to another aspect of the present application, an antibacterial and anti-allergic textile fabric prepared by the above preparation process is provided.

[0016] The present application has the following advantages: 1. The present application forms a stable five-membered chelate ring by molybdate and shikonin quinone group to form a protective inner core, and then forms a dynamic response shell by in-situ self-assembly of polydopamine through π-π stacking and hydrogen bonding, forming a dual functional core-shell structure. The nanocapsule maintains a highly dense and closed state in dry state, effectively isolating light and oxygen erosion; when contacting sweat or microbial environment, its dynamic shell can open the release channel. The polydopamine layer on the surface of the nanocapsule significantly enhances the affinity with the fiber, and the high-temperature cross-linking and curing effect of the epoxy resin forms a firm and dense coating network on the surface of the fiber. After multiple washing tests, the fabric can still maintain excellent antibacterial rate, achieving long-term protection.

[0017] 2. The antibacterial and anti-allergic textile fabric prepared by the present invention contains shikonin nanocapsules. Shikonin itself has certain antibacterial activity, and after nanoencapsulation, its antibacterial effect is significantly enhanced. The nanocapsules can slowly release shikonin, continuously exerting its antibacterial effect, effectively inhibiting the growth and reproduction of bacteria. They have a good inhibitory effect on common bacteria such as Staphylococcus aureus and Escherichia coli, and can provide users with long-lasting antibacterial protection, reducing the risk of infection and disease caused by bacterial growth.

[0018] 3. The present invention improves the surface properties of the base fabric through a pretreatment process, reducing impurities and roughness on the base fabric surface, and reducing skin irritation. At the same time, the components in the finishing liquid can tightly bond with the base fabric fibers to form a uniform protective film, reducing the incidence of allergic reactions and improving the comfort and safety of wear. The pure cotton or cotton blended base fabric itself has excellent air permeability and moisture absorption, which can keep the skin dry and comfortable. After pretreatment and finishing, the softness and feel of the fabric are further improved, making it more close-fitting and comfortable to wear, without causing any sense of restraint or discomfort to the user.

[0019] 4. The antibacterial and anti-allergic textile fabric prepared by the present invention undergoes subsequent treatment processes such as double dipping and double rolling, pre-baking, and baking, so that a strong chemical bond is formed between the effective ingredients in the finishing liquid and the base fabric fibers, thereby improving the durability of the antibacterial and anti-allergic properties of the fabric. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] Preparation Example 1 Shikonin nanocapsules were prepared by the following steps: A1, 25g of ammonium molybdate tetrahydrate was dissolved in 1000g of 0.1M phosphate buffer with a pH value of 7.2, 300g of 10wt% shikonin ethanol solution was added under dark conditions and ultrasonically dispersed for 15min, the frequency of ultrasonic treatment was 40kHz, the power was 200W, 1.5g of sodium citrate was added, and the mixture was stirred at 300rpm at 38°C for 4h in a water bath, the supernatant was discarded by centrifugation, the filter cake was washed 3 times with deionized water, and vacuum dried at 40°C for 6h to obtain modified shikonin; A2. 3 g of dopamine hydrochloride was added to 1500 g of 10 mM Tris-HCl buffer with a pH value of 8.5 and ultrasonically dispersed for 5 min. The ultrasonic treatment frequency was 40 kHz and the power was 200 W. Air was introduced to maintain the dissolved oxygen concentration at 0.25 mM. 50 g of modified shikonin was added under dark conditions. The reaction was stirred at 300 rpm at room temperature for 6 h. The mixture was centrifuged and the filter cake was washed three times with deionized water. It was then vacuum dried at 40 ° C to constant weight to obtain a dark brown powder.

[0022] Preparation Example 2 Shikonin nanocapsules were prepared by the following steps: A1, 32g of ammonium molybdate tetrahydrate was dissolved in 1050g of 0.1M phosphate buffer with a pH value of 7.4, and 350g of a 12wt% shikonin ethanol solution was added under dark conditions and ultrasonically dispersed for 20min. The frequency of the ultrasonic treatment was 45kHz and the power was 250W. After adding 2g of sodium citrate, the mixture was stirred in a water bath at 40°C for 4.5h at a speed of 350rpm, and the supernatant was discarded by centrifugation. The filter cake was washed 3 times with deionized water and dried in vacuo at 40°C for 7h to obtain modified shikonin; A2. 3.5 g of dopamine hydrochloride was added to 1700 g of 10 mM Tris-HCl buffer with a pH value of 8.6 and ultrasonically dispersed for 7 min. The ultrasonic treatment frequency was 45 kHz and the power was 250 W. The dissolved oxygen concentration was maintained at 0.3 mM. 61 g of modified shikonin was added under dark conditions. The reaction was stirred at 350 rpm at room temperature for 7 h. The mixture was centrifuged and the filter cake was washed three times with deionized water. The mixture was vacuum dried at 40 ° C to constant weight to obtain a dark brown powder.

[0023] Preparation Example 3 Shikonin nanocapsules were prepared by the following steps: A1, 40g of ammonium molybdate tetrahydrate was dissolved in 1100g of 0.1M phosphate buffer with a pH value of 7.6, 400g of 15wt% shikonin ethanol solution was added under dark conditions and ultrasonically dispersed for 25min, the frequency of ultrasonic treatment was 50kHz, the power was 300W, after adding 3g of sodium citrate, the reaction was stirred at 400rpm in a water bath at 42°C for 5h, the supernatant was discarded by centrifugation, the filter cake was washed 3 times with deionized water, and vacuum dried at 40°C for 8h to obtain modified shikonin; A2. 4 g of dopamine hydrochloride was added to 2000 g of 10 mM Tris-HCl buffer with a pH value of 8.8 and ultrasonically dispersed for 10 min. The ultrasonic treatment frequency was 50 kHz and the power was 300 W. The dissolved oxygen concentration was maintained at 0.35 mM. 70 g of modified shikonin was added under dark conditions. The reaction was stirred at 400 rpm at room temperature for 8 h. The mixture was centrifuged and the filter cake was washed three times with deionized water. It was then vacuum dried at 40 ° C to constant weight to obtain a dark brown powder.

[0024] Example 1 A preparation process for an antibacterial and anti-allergic textile fabric comprises the following steps: S1. Immerse the pure cotton base fabric in a 1 wt% sodium carbonate aqueous solution with a bath ratio of 1:15, heat treat at 60°C for 20 min, wash with water until neutral, and then dry at 80°C to obtain a pretreated base fabric; S2, 150g of the shikonin nanocapsules prepared in Preparation Example 1 were dispersed in 1000g of deionized water to obtain a dispersion, 30g of polyethylene glycol diglycidyl ether and 10g of fatty alcohol polyoxyethylene ether were added, and the mixture was stirred at a speed of 200rpm for 30min at room temperature to obtain a finishing solution; S3. Immerse the pretreated base fabric in the finishing liquid with a bath ratio of 1:18, and immerse it at 40°C with stirring at a speed of 50 rpm for 40 minutes. After two immersions and two rollings until the rolling rate reaches 70%, pre-bake at 80°C for 3 minutes, bake at 150°C for 1.5 minutes, wash it twice with warm water at 40°C, and then dry it at 60°C to obtain an antibacterial and anti-allergic textile fabric.

[0025] Example 2 A preparation process for an antibacterial and anti-allergic textile fabric comprises the following steps: S1. Immerse the cotton blended base fabric in a 1.5 wt% sodium carbonate aqueous solution with a bath ratio of 1:20, heat treat at 65°C for 30 min, wash with water until neutral, and then dry at 90°C to obtain a pretreated base fabric; S2, 180g of the shikonin nanocapsules prepared in Preparation Example 2 were dispersed in 1000g of deionized water to obtain a dispersion, 40g of polyethylene glycol diglycidyl ether and 20g of fatty alcohol polyoxyethylene ether were added, and the mixture was stirred at 250rpm for 45min at room temperature to obtain a finishing solution; S3. Immerse the pretreated base fabric in the finishing liquid with a bath ratio of 1:19, and immerse it at 42°C with stirring at a speed of 60 rpm for 60 minutes. After two immersions and two rollings until the rolling rate reaches 80%, pre-bake at 90°C for 6 minutes, bake at 170°C for 2 minutes, wash twice with warm water at 40°C, and then dry at 70°C to obtain an antibacterial and anti-allergic textile fabric.

[0026] Example 3 A preparation process for an antibacterial and anti-allergic textile fabric comprises the following steps: S1. Immerse the pure cotton or cotton blended base fabric in a 2 wt% sodium carbonate aqueous solution with a bath ratio of 1:25, heat treat at 70°C for 40 min, wash with water until neutral, and then dry at 100°C to obtain a pretreated base fabric; S2, 200g of the shikonin nanocapsules prepared in Preparation Example 3 were dispersed in 1000g of deionized water to obtain a dispersion, 50g of polypropylene glycol diglycidyl ether and 30g of fatty alcohol polyoxyethylene ether were added, and the mixture was stirred at 300rpm for 60min at room temperature to obtain a finishing solution; S3. Immerse the pretreated base fabric in the finishing liquid with a bath ratio of 1:20, and immerse it in the finishing liquid at 45°C with stirring at a speed of 100 rpm for 80 minutes. After two immersions and two rollings until the rolling rate reaches 90%, pre-bake it at 100°C for 8 minutes, bake it at 180°C for 3.5 minutes, wash it with warm water at 40°C for 3 times, and then dry it at 80°C to obtain an antibacterial and anti-allergic textile fabric.

[0027] Comparative Example 1 The difference between this comparative example and Preparation Example 1 is that ammonium molybdate tetrahydrate is not added, and the remaining steps are the same as those of Preparation Example 1.

[0028] Comparative Example 2 The difference between this comparative example and Preparation Example 2 is that dopamine hydrochloride is not added, and the remaining steps are the same as those in Preparation Example 2.

[0029] Comparative Example 3 The difference between this comparative example and Example 1 is that the modified shikonin prepared in Comparative Example 1 is used instead of the shikonin nanocapsules prepared in Preparation Example 1, and the remaining steps are the same as in Example 1.

[0030] Comparative Example 4 The difference between this comparative example and Example 2 is that the modified shikonin prepared in Comparative Example 2 is used instead of the shikonin nanocapsules prepared in Preparation Example 2, and the remaining steps are the same as in Example 2.

[0031] Comparative Example 5 The difference between this comparative example and Example 3 is that commercially available shikonin is used instead of the shikonin nanocapsules prepared in Preparation Example 3, and the remaining steps are the same as those in Example 3.

[0032] With reference to GB / T 20944.3-2008 “Evaluation of antimicrobial properties of textiles Part 3: Oscillation method”, Staphylococcus aureus (ATCC 6538) was streaked onto a nutrient agar plate and incubated at 37°C for 24 h. A single colony was picked and inoculated into 5 mL of nutrient broth and incubated at 37°C for 18 h. The culture was centrifuged for 10 min, the supernatant discarded, and the plate was resuspended in phosphate buffer (0.03 mol / L, pH = 7.2 ± 0.1). The plate was diluted with phosphate buffer to a McFarland turbidity of 0.5, and then serially diluted to a working concentration of 5 × 10 5CFU / mL, set aside. Cut each fabric to be tested from Examples 1-3, Comparative Examples 3-5, and a blank base fabric (blank group) into 5.0 cm × 5.0 cm squares, sterilize at 121°C for 15 min, and dry at 60°C for later use. Add 30 mL of phosphate buffer to a sterile conical flask, add 1.0 mL of Staphylococcus aureus suspension (final concentration 5 × 10 4 CFU / mL), put a piece of sterilized sample, seal the bottle, place it in a constant temperature oscillator, shake at 37℃ and 150rpm for 18h, take 1.0mL of the oscillation solution, and make 10-fold serial dilutions (10 -1 , 10 -2 , 10 -3 ), take 100 μL of the dilution solution and spread it on the nutrient agar plate, incubate at 37℃ for 24 hours, count the effective colonies, and calculate the colony concentration and antibacterial rate. The formula is as follows:

[0033]

[0034] The results are shown in Table 1: Table 1. Antibacterial test results of Staphylococcus aureus

[0035] The fabrics of Examples 1-3 and Comparative Examples 3-5 were cut into 20cm×20cm swatches, and the blank group was an untreated base fabric of the same specification, and 10 washing cycles were completed. Each washing cycle was specifically as follows: at a washing temperature of 40℃±3℃, a detergent concentration of 4g / L, a bath ratio of 1:30, a loading amount of sample + total weight of wash cloth = 1.0kg, washing for 45min, and then rinsing 2 times at room temperature, each time for 5min, centrifugal dehydration, and drying in a 60℃ oven. The washing liquid was prepared in accordance with GB / T 12490-2014 "Textiles - Tests for Colour Fastness - Colour Fastness to Domestic and Commercial Washing". After completing 10 washing cycles, the antibacterial rate of Staphylococcus aureus was tested according to the above method, and the retention rate was calculated, and the retention rate = (antibacterial rate after washing / initial antibacterial rate) × 100%. The results are shown in Table 2: Table 2. Changes in antibacterial performance after 10 washing cycles

[0036] Twenty healthy volunteers with no history of allergies were randomly selected and divided into four groups to test Examples 1-3 and Comparative Example 5. 2cm x 2cm pieces of fabric were sterilized and applied to the inner upper arm. After 48 hours, the fabric was removed. Skin reactions were recorded and scored by the subjects. The scoring scale is: 0, no reaction; 1, mild erythema (scattered, unclear boundaries); 2, moderate erythema (confluent, edema); 3, severe erythema (with blisters or erosions). The results are shown in Table 3. Table 3. Skin patch test results

[0037] As shown in Tables 1 and 2, the antibacterial rates of Examples 1-3 are all relatively high, namely 93.5±0.6%, 95.3±0.4%, and 96.8±0.4%, respectively. The antibacterial rates of Comparative Examples 3-5 are significantly lower than those of the Examples, with the antibacterial rate of Comparative Example 3 being 15.8±0.7%, the antibacterial rate of Comparative Example 4 being 55.3±0.9%, and the antibacterial rate of Comparative Example 5 being only 3.9±0.5%, indicating that the antibacterial and anti-allergic textile fabrics prepared using the shikonin nanocapsules prepared in Preparation Examples 1-3 have excellent antibacterial properties.

[0038] The antibacterial performance retention rates of Examples 1-3 after washing were all high, namely 99.1%, 98.8% and 99.0%, respectively. The antibacterial performance retention rates of Comparative Examples 3-5 after washing were low, namely 41.1% for Comparative Example 3, 24.1% for Comparative Example 4 and 0 for Comparative Example 5, indicating that the antibacterial and anti-allergic textile fabrics prepared using shikonin nanocapsules can still maintain good antibacterial properties after multiple washings.

[0039] In the process of preparing shikonin nanocapsules in Preparation Examples 1-3, shikonin was first modified with ammonium molybdate tetrahydrate, and then dopamine hydrochloride was added to form nanocapsules. The formation of nanocapsules may have enhanced the stability and biological activity of shikonin, allowing it to better function on the fabric, thereby improving the antibacterial performance. In Comparative Example 1, ammonium molybdate tetrahydrate was not added, and shikonin may not have been effectively modified, resulting in a decrease in its antibacterial activity. Therefore, the antibacterial rate of Comparative Example 3 was significantly lower than that of Example 1. In Comparative Example 2, dopamine hydrochloride was not added, and nanocapsules could not be formed. Shikonin may not have been effectively protected and fixed, resulting in a decrease in its antibacterial activity. Therefore, the antibacterial rate of Comparative Example 4 was significantly lower than that of Example 2. Comparative Example 5 used commercially available shikonin without modification and nanocapsule formation, and its antibacterial activity was the lowest, indicating that modification and nanocapsule formation are crucial to improving the antibacterial effect of shikonin.

[0040] From the skin patch test results in Table 3, the average skin reaction scores of Examples 1-3 were all low, with Example 1 being 0, Example 2 being 0, and Example 3 being 0.2. This indicates that the antibacterial and anti-allergic textile fabrics prepared using the shikonin nanocapsules prepared in Preparation Examples 1-3 are less irritating to the skin and have good anti-allergic properties. The average skin reaction score of Comparative Example 5 was 0.6, significantly higher than that of the Examples, indicating that the fabric prepared using commercially available shikonin is relatively irritating to the skin and has poor anti-allergic properties. This further demonstrates that the modification and formation of nanocapsules in shikonin not only improves the antibacterial properties but also reduces skin irritation.

[0041] In summary, the antibacterial and anti-allergic textile fabrics prepared using the shikonin nanocapsules prepared in Preparation Examples 1-3 have excellent antibacterial and anti-allergic properties and antibacterial property retention rate after washing.

[0042] Throughout the specification, reference to terms such as "Preparation," "Example," or "Examples" indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or preparation are included in at least one embodiment or preparation of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or preparation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or preparations.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A preparation process for antibacterial and anti-allergic textile fabrics, characterized in that: The following steps are involved: S1. Immerse the pure cotton or cotton blended base fabric in a sodium carbonate aqueous solution, heat treat for 20-40 min, wash with water until neutral, and then dry to obtain a pretreated base fabric; S2, dispersing shikonin nanocapsules in deionized water to obtain a dispersion, adding a water-soluble epoxy resin and a penetrant, and stirring at room temperature for 30-60 minutes to obtain a finishing solution; S3. Immerse the pretreated base fabric in the finishing solution, control the temperature and stir for 40-80 minutes, perform two immersions and two rollings until the rolling rate reaches 70-90%, and dry to obtain an antibacterial and anti-allergic textile fabric.

2. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 1, characterized in that: The concentration of the sodium carbonate aqueous solution in step S1 is 1-2 wt %, the bath ratio is 1:(15-25), and the heat treatment temperature is 60-70° C.

3. The preparation process of the antibacterial and anti-allergic textile fabric according to claim 1, characterized in that: In step S2, the water-soluble epoxy resin includes one or more of polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether and glycerol polyoxypropylene triglycidyl ether, and the penetrant includes one or more of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether and isomeric alcohol polyoxyethylene ether.

4. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 1, characterized in that: In step S2, the mass ratio of shikonin nanocapsules, deionized water, water-soluble epoxy resin and penetrant is (15-20):100:(3-5):(1-3).

5. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 1, characterized in that: The bath ratio in step S3 is 1:(18-20), the temperature of the temperature control is 40-45° C., the stirring speed in step S2 is 200-300 rpm, and the stirring speed in step S3 is 50-100 rpm.

6. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 1, characterized in that: In step S2, shikonin nanocapsules are prepared by the following steps: A1. Dissolve ammonium molybdate tetrahydrate in phosphate buffer, add shikonin ethanol solution under dark conditions and ultrasonically disperse for 15-25 minutes, add sodium citrate, stir in a water bath for 4-5 hours, centrifuge and discard the supernatant, wash and dry to obtain modified shikonin; A2. Add dopamine hydrochloride to Tris-HCl buffer and ultrasonically disperse for 5-10 minutes. Add modified shikonin under light-proof conditions. Stir and react at room temperature for 6-8 hours. Centrifuge, wash, and dry to obtain shikonin nanocapsules.

7. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 6, characterized in that: In step A1, the mass ratio of ammonium molybdate tetrahydrate, phosphate buffer, shikonin ethanol solution and sodium citrate is (2.5-4): (100-110): (30-40): (0.15-0.3), the pH value of the phosphate buffer is 7.2-7.6, and the concentration of the shikonin ethanol solution is 10-15wt%.

8. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 6, characterized in that: In step A2, the mass ratio of dopamine hydrochloride, Tris-HCl buffer and modified shikonin is (0.3-0.4):(150-200):(5-7), and the pH value of the Tris-HCl buffer is 8.5-8.

8.

9. The process for preparing an antibacterial and anti-allergic textile fabric according to claim 6, characterized in that: The temperature of the water bath in step A1 is 38-42° C., and the stirring speed in step A1 and step A2 is 300-400 rpm.

10. An antibacterial and anti-allergic textile fabric produced by the preparation process according to any one of claims 1 to 9.

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