Antibacterial fluffy softener for fabric and preparation process of antibacterial fluffy softener

Abstract

The invention discloses an antibacterial fluffy softener for fabrics and a preparation process thereof, and belongs to the technical field of textile assistants.The antibacterial fluffy softener takes hollow silicon dioxide microspheres as a carrier, the surfaces of the hollow silicon dioxide microspheres are coated with polyaniline with an antistatic component, and the hollow silicon dioxide microspheres are high in chemical stability and resistant to acid, alkali and detergent corrosion; the fabric is not easy to corrode when being washed and washed by sweat, and can endow the fabric with antibacterial, fluffy, soft and long-acting antistatic properties; the hollow silicon dioxide microspheres have stereoscopic impression and can form tiny supporting points among fabric fibers to reduce tight attachment among the fibers, gaps among the fibers can be further increased due to the porous property of the hollow silicon dioxide microspheres, and the hollow silicon dioxide microspheres and hydrophobic groups in the structure of the antibacterial fluffy softener for the fabric have a synergistic effect, so that the antibacterial fluffy softener for the fabric has a good antibacterial effect. The hollow silicon dioxide microspheres are directionally adsorbed on the surface of fabric fibers to form a layer of lubricating film, so that the fluffy hand feeling of the fabric is enhanced, and the hollow silicon dioxide microspheres are high in chemical stability and resistant to acid, alkali and detergent erosion.

Description

Technical Field

[0001] This invention belongs to the field of textile auxiliary technology, specifically an antibacterial fluffing and softening agent for fabrics and its preparation process. Background Technology

[0002] Today, consumers have increasingly higher demands for the functionality of textiles, requiring not only durable and highly effective antibacterial properties but also good wearing comfort and feel. Manufacturers typically use a combination of two finishing agents to treat fabrics when applying softening and antibacterial finishing. Common softening agents include amino silicone oil and block silicone oil, while antibacterial agents include small-molecule organosilicon quaternary ammonium salts, nano-silver, and other metal complexes. While fabrics treated with amino silicone oil have good softness, they feel oily and have slightly poorer moisture permeability and hydrophilicity. Fabrics treated with block silicone oil have better moisture permeability and hydrophilicity, but the synthesis process uses platinum catalysts, resulting in higher costs. Small-molecule organosilicon quaternary ammonium salts have excellent antibacterial effects, but their antibacterial mechanism is dissolution inhibition, which can cause slight skin irritation.

[0003] Furthermore, modern textiles not only need to provide people with a beautiful, luxurious, and comfortable visual experience, but also must have features that allow for engineering design and the manufacturability of the design. In terms of functionality, they also need to have properties such as cutability, formability, lightweight, high strength, heat resistance, anti-pilling, elastic recovery, softness, flame retardancy, and antistatic properties.

[0004] Chinese patent announcement CN116289202B discloses a multifunctional wool-natural fiber blended fabric and its preparation process. In this scheme, phosphate betaine is used as a surfactant and compounded with the antistatic agent alkyl phosphate, which can effectively enhance the antistatic ability of wool blended fabric. However, alkyl phosphate has poor acid and alkali resistance, which leads to the failure of antistatic effect due to pH changes when exposed to sweat and washing, thus failing to achieve a long-lasting antistatic effect. Summary of the Invention

[0005] The purpose of this invention is to provide an antibacterial and fluffy softener for fabrics and its preparation process. Hollow silica microspheres are used as a carrier, with the surface coated with polyaniline containing antistatic components. The hollow silica microspheres exhibit high chemical stability and resistance to acids, alkalis, and detergents, making them less prone to corrosion when exposed to sweat and washing. This process imparts antibacterial, fluffy, soft, and long-lasting antistatic properties to fabrics. The objective of this invention can be achieved through the following technical solutions: A process for preparing an antibacterial fluffing and softening agent for fabrics includes the following steps: Step 1: Using p-aminostyrene and epoxy end-capping agent as raw materials, and then adding terminal epoxy silicone oil, a two-step epoxy ring-opening reaction is carried out to obtain a quaternary ammonium salt graft modifier.

[0006] Step 2: Using a quaternary ammonium salt graft modifier as the configuration center, isophorone diisocyanate as the hard segment, and polyethylene glycol 2000 and hydroxyl silicone oil as the soft segment branching arms, an antibacterial block silicone softener is obtained.

[0007] Step 3: Using 2-vinylpyridine as the pH-responsive monomer and antibacterial block silicone softener as the main chain structure, a pH-responsive antibacterial softener was prepared by photoinitiation curing.

[0008] Step 4: After acid washing, hollow silica microspheres are used to prepare sulfonated silica microspheres. Using these as a carrier, in-situ polymerization is used to coat the hollow silica microspheres with polyaniline to obtain antistatic microspheres.

[0009] Step 5: Mix the antistatic microspheres and pH-responsive antibacterial softener at a mass ratio of 1:20 to obtain an antibacterial fluffy softener for fabrics.

[0010] Furthermore, the specific preparation steps of the quaternary ammonium salt graft modifier are as follows: 1,1,3,3-Tetramethyl-1,3-di-[3-(epoxyethylmethoxy)propyl]disiloxane and isopropanol, used as epoxy end-capping agents, were added to a reaction vessel and stirred for 20-30 minutes at 70-85℃ and 500-600 r / min to obtain a mixed solution. Then, p-aminostyrene and glacial acetic acid were stirred and mixed and added to the mixed solution. The reaction was continued at the temperature for 2-3 hours. Then, 9 mol / L terminal epoxy polyether silicone oil was added and the reaction was continued at the temperature for 2-3 hours to obtain a quaternary ammonium salt graft modifier.

[0011] Furthermore, the ratio of 1,1,3,3-tetramethyl-1,3-bis-[3-(epoxyethylmethoxy)propyl]disiloxane to isopropanol is 100-120 mL: 150-200 mL.

[0012] Furthermore, the ratio of aminostyrene, glacial acetic acid, and terminal epoxy polyether silicone oil is 144-150g: 9.07-9.12g: 500-600mL.

[0013] Furthermore, the specific preparation steps of the antibacterial block silicone softener are as follows: The active branching intermediate, polyethylene glycol 2000 and hydroxyl-terminated silicone oil are added to a reaction vessel and stirred for 20-30 minutes at 70-85℃ and 500-600 r / min. Then, dibutyltin dilaurate is added and the mixture is kept at this temperature for 90-100 minutes to obtain an antibacterial block silicone softener.

[0014] Furthermore, the ratio of the active branching intermediate, polyethylene glycol 2000, hydroxyl-terminated silicone oil, and dibutyltin dilaurate is 80-90g: 40-50g: 38-45g: 3-4g.

[0015] Furthermore, the specific preparation steps of the active branched intermediate are as follows: Isophorone diisocyanate, butanone and N-ethylpyrrolidone were added to a reaction vessel and stirred for 20-30 min at 70-85℃ and 500-600 r / min. Then, a quaternary ammonium salt graft modifier was added, and the mixture was kept at this temperature for 30-40 min. The mixture was then heated to 80-90℃ and kept at this temperature for another 30-40 min to obtain the active branched intermediate.

[0016] Furthermore, the ratio of isophorone diisocyanate, butanone, N-ethylpyrrolidone and quaternary ammonium salt graft modifier is 100-120g: 120-140g: 80-90g: 50-60g.

[0017] Furthermore, the specific preparation steps for the pH-responsive antibacterial fabric softener are as follows: 2-Vinylpyridine, N,N-methylenebisacrylamide, antibacterial block silicone softener, photoinitiator 2-hydroxy-2-methylphenylacetone, and acetone were added to a reaction vessel and stirred for 20-30 minutes at 70-85℃ and 500-600 rpm. The product was then transferred to a UV curing chamber and cured under UV light at an intensity of 70-80 W / cm². 2 Irradiation with ultraviolet light at a wavelength of 365 nm for 30-40 minutes yields a pH-responsive antibacterial softener.

[0018] Furthermore, the ratio of 2-vinylpyridine, N,N-methylenebisacrylamide, antibacterial block silicone softener, 2-hydroxy-2-methylphenylacetone and acetone is 3-4g:0.7-0.8g:4-5g:0.25-0.3g:24-26mL.

[0019] Furthermore, the specific preparation steps of sulfonated silica microspheres are as follows: Hollow silica microspheres with a particle size of 30-50 nm and a 98% sulfuric acid solution were added to a reaction vessel at a ratio of 100-120 g: 500-600 mL. The mixture was stirred at 45-50 °C and 500-600 r / min for 2-3 h. The mixture was then filtered, and the filter cake was washed 2-4 times with deionized water and anhydrous ethanol, respectively. The mixture was then vacuum dried at 60-70 °C for 1-2 h to obtain sulfonated silica microspheres.

[0020] Furthermore, the specific preparation steps of the antistatic microspheres are as follows: Deionized water, aniline, and 1 mol / L hydrochloric acid were added to a reaction vessel and stirred at 45-50℃ and 500-600 r / min for 20-30 min. Then, sulfonated silica microspheres were added and stirred for another 30-40 min. Ammonium persulfate was then added and the reaction was continued for 6-7 h. Unreacted monomers were removed by rotary evaporation and the mixture was vacuum dried at 60-70℃ for 1-2 h to obtain antistatic microspheres.

[0021] Furthermore, the ratio of deionized water, aniline, hydrochloric acid, sulfonated silica microspheres, and ammonium persulfate is 400-500 mL: 80-90 g: 12-13 mL: 3-4 g: 4-5 g.

[0022] The beneficial effects of this invention are: 1. The antibacterial fluffing and softening agent for fabrics prepared by the present invention uses hollow silica microspheres as a carrier and the surface is coated with antistatic polyaniline. The hollow silica microspheres have high chemical stability and are resistant to acid, alkali and detergent corrosion, making them less susceptible to corrosion when exposed to sweat and washing. They can endow fabrics with antibacterial, fluffy, soft and long-lasting antistatic properties.

[0023] 2. The antibacterial fluffing and softening agent for fabrics of the present invention contains hollow silica microspheres coated with polyaniline. The presence of hollow silica microspheres provides a three-dimensional effect, forming tiny support points between fabric fibers, reducing the tight adhesion between fibers, and its porous nature further increases the gap between fibers. It works synergistically with the hydrophobic groups in the structure of the antibacterial fluffing and softening agent for fabrics, and is directionally adsorbed on the surface of fabric fibers to form a lubricating film, thereby enhancing the fluffy feel of the fabric. The hollow silica microspheres have high chemical stability and are resistant to acid, alkali and detergent corrosion. As a carrier, they can improve the adhesion of the polyaniline-coated structure to the fabric surface, reduce shedding during washing, and prolong the durability of antistatic and other functions.

[0024] 3. This invention achieves responsive "contact" antibacterial action through chemical grafting and copolymerization, avoiding the potential skin irritation caused by conventional long-term "contact" antibacterial methods. This invention grafts pH-responsive 2-vinylpyridine into an antibacterial fabric softener. In a neutral environment, 2-vinylpyridine is hydrophobic. Once the fabric comes into contact with sweat, the local pH drops, causing 2-vinylpyridine to protonate and become hydrophilic. The increased hydrophilicity promotes the contact between the antibacterial components in the antibacterial fabric softener and the skin, thereby achieving precise antibacterial action.

[0025] 4. This invention achieves the coating of hollow silica microspheres with polyaniline through in-situ polymerization. During the coating process, the negatively charged sulfonic acid groups in the sulfonated silica microspheres electrostatically adsorb the positively charged aniline, thereby promoting the polymerization and coating of silica with polyaniline. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: A process for preparing an antibacterial fluffing and softening agent for fabrics, comprising the following steps: S1: 120 mL of 1,1,3,3-tetramethyl-1,3-di-[3-(epoxyethylmethoxy)propyl]disiloxane and 200 mL of isopropanol were added to a reaction vessel and stirred at 85 °C and 600 r / min for 30 min to obtain a mixed solution. Then, 150 g of p-aminostyrene and 9.12 g of glacial acetic acid were stirred and mixed and added to the mixed solution. The reaction was continued at the temperature for 3 h. Then, 600 mL of 9 mol / L terminal epoxy polyether silicone oil was added and the reaction was continued at the temperature for 3 h to obtain a quaternary ammonium salt graft modifier.

[0028] S2: Add 120g isophorone diisocyanate, 140g butanone and 90g N-ethylpyrrolidone to a reaction vessel and stir for 30min at 85℃ and 600r / min. Then add 60g quaternary ammonium salt graft modifier, keep warm for 40min, heat to 90℃, and keep warm for another 40min to obtain an active branched intermediate. Add 90g active branched intermediate, 50g polyethylene glycol 2000 and 45g hydroxyl-terminated silicone oil to a reaction vessel and stir for 30min at 85℃ and 600r / min. Then add 4g dibutyltin dilaurate and keep warm for another 100min to obtain an antibacterial block silicone softener.

[0029] S3: Add 4g of 2-vinylpyridine, 0.8g of N,N-methylenebisacrylamide, 5g of antibacterial block silicone softener, 0.3g of photoinitiator 2-hydroxy-2-methylphenylacetone, and 26mL of acetone to a reaction vessel. Stir for 30min at 85℃ and 600r / min. Transfer the product to a UV curing chamber and cure under UV light at an intensity of 80W / cm². 2 A pH-responsive antibacterial softener was obtained by irradiating with ultraviolet light at a wavelength of 365 nm for 40 min.

[0030] S4: Add 2g of hollow silica microspheres with a particle size of 50nm and 60mL of 98% sulfuric acid solution to the reaction vessel, stir for 3h at 50℃ and 600r / min, filter, wash the filter cake 4 times with deionized water and anhydrous ethanol respectively, and dry it under vacuum at 70℃ for 2h to obtain sulfonated silica microspheres.

[0031] S5: Add 500 mL of deionized water, 90 g of aniline, and 13 mL of 1 mol / L hydrochloric acid to a reaction vessel. Stir for 30 min at 50 °C and 600 r / min. Then add 4 g of sulfonated silica microspheres and continue stirring for 40 min. Next, add 5 g of ammonium persulfate and continue stirring for 7 h. Remove unreacted monomers by rotary evaporation and vacuum dry at 70 °C for 2 h to obtain antistatic microspheres. S6: Mix the antistatic microspheres and pH-responsive antibacterial softener at a mass ratio of 1:20 to obtain an antibacterial fluffy softener for fabrics.

[0032] Example 2: The preparation process of an antibacterial fluffing and softening agent for fabrics provided in this example differs from that in Example 1 in that the ratio of aminostyrene, glacial acetic acid and terminal epoxy polyether silicone oil in step S1 is 148g:9.10g:580mL.

[0033] Example 3: The preparation process of an antibacterial fluffing and softening agent for fabrics provided in this example differs from that in Example 1 in that the ratio of isophorone diisocyanate, butanone, N-ethylpyrrolidone and quaternary ammonium salt graft modifier in step S2 is 110g:129g:85g:55g.

[0034] Example 4: The preparation process of an antibacterial fluffing and softening agent for fabrics provided in this example differs from that in Example 1 in that the ratio of active branched intermediate, polyethylene glycol 2000, hydroxyl-terminated silicone oil and dibutyltin dilaurate in step S2 is 88g:45g:40g:3.4g.

[0035] Example 5: The preparation process of an antibacterial fluffing and softening agent for fabrics provided in this example differs from that in Example 1 in that the ratio of 2-vinylpyridine, N,N-methylenebisacrylamide, antibacterial block silicone softener, 2-hydroxy-2-methylphenylacetone and acetone in step S3 is 3.5g:0.75g:4.5g:0.29g:25mL.

[0036] Example 6: The preparation process of an antibacterial fluffing and softening agent for fabrics provided in this example differs from that in Example 1 in that the ratio of deionized water, aniline, hydrochloric acid, sulfonated silica microspheres, pH-responsive antibacterial softening agent and ammonium persulfate in step S4 is 450mL:85g:12mL:3.4g:13mL:4.5g.

[0037] Comparative Example 1: Based on Example 1, p-aminostyrene in step S1 was replaced with tetramethylhexanediamine to make it vinyl-free, while the other steps remained unchanged, to prepare an antibacterial fluffing and softening agent for fabrics.

[0038] Comparative Example 2: Based on Example 1, the pH-responsive antibacterial softener in step S5 was replaced with the antibacterial block silicone softener prepared in step S2, while the other steps remained unchanged, to prepare an antibacterial fluffy softener for fabrics.

[0039] Comparative Example 3: Based on Example 1, the pH-responsive antibacterial softener prepared in step S3 was directly used as an antibacterial fluffing softener for fabrics.

[0040] Comparative examples and embodiments: The hollow silica microspheres were purchased from Henan Borun Casting Materials Co., Ltd.

[0041] The performance of the antibacterial fluffing and softening agents for fabrics prepared in Examples 1-6 and Comparative Examples 1-3 was tested. Linen / cotton blended fabrics were impregnated with 2% (w / w) of the antibacterial fluffing and softening agent, pre-dried at 80°C for 5 min, and then baked at 120°C for 5 min. The various properties of the linen fabrics were then tested, and the results are shown in Table 1. 1. Fabric mechanical strength: Tested in accordance with GB / T 3923.1-2013 "Textiles - Tensile properties of fabrics - Part 1: Determination of breaking strength and elongation at break (strip method)".

[0042] 2. Antibacterial properties of fabrics: The test was conducted in accordance with GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles - Part 3: Shaking method", taking Escherichia coli as an example.

[0043] 3. Fabric softness: Evaluated based on the tactile feedback of multiple people.

[0044] 4. Pilling and fuzzing properties of fabrics: The test shall be conducted in accordance with GB / T 4802.2-2008 "Textiles - Determination of pilling and fuzzing properties of fabrics - Part 2: Modified Martindale test".

[0045] 5. Antistatic properties: The surface charge density of linen / cotton blended fabrics was tested according to GB / T12703.2-2009 "Textiles - Electrostatic Test Method".

[0046] Table 1 Performance Test Table for Linen / Cotton Blended Fabrics

[0047] As can be seen from Table 1, the tear strength, antibacterial rate, hand feel, anti-pilling and anti-fuzzing properties, and charge surface density of the antibacterial and fluffy softeners for fabrics prepared in Examples 1-6 are significantly better than those of the comparative examples, indicating that the antibacterial and fluffy softeners for fabrics prepared in this invention can impart antibacterial, fluffy, soft and long-lasting antistatic properties to fabrics.

[0048] In Comparative Example 1, p-aminostyrene was replaced with tetramethylhexanediamine to eliminate the vinyl groups. The vinyl groups of p-aminostyrene are key active sites for subsequent polymerization, which can crosslink with 2-vinylpyridine and N,N-methylenebisacrylamide to form a three-dimensional network structure, enhancing the bonding force between the softener and the fabric fibers. After being replaced with tetramethylhexanediamine, the crosslinking reaction could not proceed fully due to the absence of vinyl groups, resulting in a decrease in the bonding force between the softener and the fabric. Furthermore, the antistatic components did not adhere well and were easily washed away, leading to a reduction in the antistatic effect.

[0049] Comparative Example 2 replaced the pH-responsive antibacterial fabric softener with an antibacterial block silicone fabric softener. The 2-vinylpyridine in the pH-responsive antibacterial fabric softener can achieve precise antibacterial action through a neutral hydrophobic-acidic hydrophilic conversion, avoiding long-term contact and skin irritation. At the same time, the hydrophilic conversion can promote the dispersion of sulfonated silica microspheres. After replacing it with a non-pH-responsive antibacterial block silicone fabric softener, due to the lack of pH-responsive antibacterial components, it is easily decomposed in sweat and detergent after long-term exposure, and cannot concentrate its action in sweat areas.

[0050] Comparative Example 3 uses a pH-responsive antibacterial softener directly as an antibacterial fluffing softener for fabrics. The hollow structure provides support for the fiber gaps, and silica acts as a carrier to fix the antistatic components. When the pH-responsive antibacterial softener is used directly, there is no support from silica, the fibers are tightly adhered and cannot form gaps, resulting in a stiff feel. Due to the lack of a conductive network of polyaniline, charge easily accumulates.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A preparation process for an antibacterial fluffing and softening agent for fabrics, characterized in that, Includes the following steps: Step 1: Using p-aminostyrene and epoxy end-capping agent as raw materials, and then adding terminal epoxy silicone oil, a two-step epoxy ring-opening reaction is carried out to obtain a quaternary ammonium salt graft modifier. Step 2: Using quaternary ammonium salt graft modifier as the configuration center, isophorone diisocyanate as the hard segment, and polyethylene glycol 2000 and hydroxyl silicone oil as the soft segment branching arms, an antibacterial block organosilicon softener is obtained. Step 3: Using 2-vinylpyridine as the pH-responsive monomer and antibacterial block silicone softener as the main chain structure, a pH-responsive antibacterial softener was prepared by photoinitiation curing method; Step 4: After acid washing, hollow silica microspheres are used to prepare sulfonated silica microspheres. Using these as a carrier, in-situ polymerization is used to coat the hollow silica microspheres with polyaniline. The coating is then mixed with a responsive antibacterial softener to obtain antistatic microspheres. Step 5: Mix the antistatic microspheres and pH-responsive antibacterial softener at a mass ratio of 1:20 to obtain an antibacterial fluffy softener for fabrics.

2. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 1, characterized in that, The specific preparation steps of the quaternary ammonium salt grafting modifier are as follows: 1,1,3,3-Tetramethyl-1,3-di-[3-(epoxyethylmethoxy)propyl]disiloxane and isopropanol, used as epoxy end-capping agents, were added to a reaction vessel and stirred at 70-85℃ and 500-600r / min for 20-30min to obtain a mixed solution. Then, p-aminostyrene and glacial acetic acid were stirred and mixed and added to the mixed solution. The reaction was continued at the temperature for 2-3h. Then, 9mol / L terminal epoxy polyether silicone oil was added and the reaction was continued at the temperature for 2-3h to obtain a quaternary ammonium salt graft modifier. The ratio of 1,1,3,3-tetramethyl-1,3-bis-[3-(epoxyethylmethoxy)propyl]disiloxane to isopropanol is 100-120 mL: 150-200 mL; the ratio of p-aminostyrene, glacial acetic acid, and terminal epoxy polyether silicone oil is 144-150 g: 9.07-9.12 g: 500-600 mL.

3. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 1, characterized in that, The specific preparation steps of the antibacterial block silicone softener are as follows: The active branching intermediate, polyethylene glycol 2000 and hydroxyl-terminated silicone oil are added to a reaction vessel and stirred for 20-30 minutes at 70-85℃ and 500-600 r / min. Then, dibutyltin dilaurate is added and the mixture is kept at this temperature for 90-100 minutes to obtain an antibacterial block silicone softener.

4. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 3, characterized in that, The ratio of the active branching intermediate, polyethylene glycol 2000, hydroxyl-terminated silicone oil, and dibutyltin dilaurate is 80-90g: 40-50g: 38-45g: 3-4g.

5. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 3, characterized in that, The specific preparation steps of the active branched intermediate are as follows: Isophorone diisocyanate, butanone and N-ethylpyrrolidone were added to a reaction vessel and stirred at 70-85℃ and 500-600 r / min for 20-30 min. Then, a quaternary ammonium salt grafting modifier was added, and the mixture was kept at this temperature for 30-40 min. The mixture was then heated to 80-90℃ and kept at this temperature for another 30-40 min to obtain the active branched intermediate. The ratio of isophorone diisocyanate, butanone, N-ethylpyrrolidone and quaternary ammonium salt graft modifier is 100-120g: 120-140g: 80-90g: 50-60g.

6. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 1, characterized in that, The specific preparation steps for the pH-responsive antibacterial fabric softener are as follows: 2-Vinylpyridine, N,N-methylenebisacrylamide, antibacterial block silicone softener, photoinitiator 2-hydroxy-2-methylphenylacetone, and acetone were added to a reaction vessel and stirred for 20-30 minutes at 70-85℃ and 500-600 rpm. The product was then transferred to a UV curing chamber and cured under UV light at an intensity of 70-80 W / cm². 2 Irradiation with ultraviolet light at a wavelength of 365 nm for 30-40 minutes yields a pH-responsive antibacterial softener.

7. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 6, characterized in that, The ratio of 2-vinylpyridine, N,N-methylenebisacrylamide, antibacterial block silicone softener, 2-hydroxy-2-methylphenylacetone and acetone is 3-4g:0.7-0.8g:4-5g:0.25-0.3g:24-26mL.

8. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 1, characterized in that, The specific preparation steps for the sulfonated silica microspheres are as follows: Hollow silica microspheres and 98% sulfuric acid solution were added to a reaction vessel at a ratio of 100-120g: 500-600mL. The mixture was stirred at 45-50℃ and 500-600r / min for 2-3 hours, filtered, and the filter cake was washed 2-4 times with deionized water and anhydrous ethanol, respectively. The mixture was then vacuum dried at 60-70℃ for 1-2 hours to obtain sulfonated silica microspheres.

9. The preparation process of an antibacterial fluffing and softening agent for fabrics according to claim 1, characterized in that, The specific preparation steps of the antistatic microspheres are as follows: Deionized water, aniline, and 1 mol / L hydrochloric acid were added to a reaction vessel and stirred at 45-50℃ and 500-600 r / min for 20-30 min. Then, sulfonated silica microspheres were added and stirred for another 30-40 min. Ammonium persulfate was then added and the reaction was continued for 6-7 h. Unreacted monomers were removed by rotary evaporation and the mixture was vacuum dried at 60-70℃ for 1-2 h to obtain antistatic microspheres. The ratio of deionized water, aniline, hydrochloric acid, sulfonated silica microspheres and ammonium persulfate is 400-500 mL: 80-90 g: 12-13 mL: 3-4 g: 4-5 g.

10. An antibacterial fluffing and softening agent for fabrics, characterized in that, It is prepared by the preparation process described in any one of claims 1-9.

Images