An antibacterial flame retardant textile auxiliary agent and its preparation method and application

Abstract

The invention discloses an antibacterial and flame-retardant textile auxiliary agent, a preparation method and application thereof. The preparation method comprises the following steps: adding hydroxyethyl ether chitosan, water-based acrylic resin and sodium polyphosphate to 40-60% of the total mass of deionized water by weight, stirring once, then adding a composite functional material, a surfactant, an antioxidant and the remaining deionized water, stirring a second time, and adjusting the pH value of the solution to obtain the textile auxiliary agent. The textile auxiliary agent has excellent antibacterial effect and high safety, and is suitable for direct contact with human skin. It also has excellent flame retardant properties and can effectively delay or interrupt the spread of flame. In addition, the textile auxiliary agent is easier to adhere to the surface of textiles, has good washability, and still has excellent antibacterial and flame retardant effects after multiple washings.

Description

Technical Field

[0001] The present invention relates to the field of textile auxiliaries, and in particular to an antibacterial and flame-retardant textile auxiliary, a preparation method thereof, and an application thereof. Background Art

[0002] With the continuous development of domestic and international market economies, the advancement of modern science and technology, and the gradual growth of the textile industry, the types of textiles are increasing, and their application scope is becoming wider and wider. Textile auxiliaries are essential chemicals in the production and processing of textiles. Textile auxiliaries play an indispensable role in improving the product quality and added value of textiles. They not only give textiles various special functions and styles, but also improve dyeing and finishing processes, saving energy and reducing processing costs. With the development of science and technology and the improvement of living standards, people's requirements for textiles are constantly increasing, especially in terms of hygiene. However, both traditional and new textiles are generally combustible or flammable materials, which are prone to fire accidents. Therefore, the textile industry is in urgent need of textile auxiliaries that can achieve multiple functions. There is an urgent need to develop a textile auxiliaries with antibacterial and flame retardant functions.

[0003] There are many antimicrobial auxiliaries for textiles in the existing technology, which can be mainly divided into three categories: inorganic, organic, and natural antimicrobial agents. Inorganic antimicrobial agents are mostly metal ions, some photocatalytic antimicrobial agents, and composite finishing antimicrobial agents, such as metals, metal salts, and some photocatalytic antimicrobial agents; organic antimicrobial agents are mostly traditional antimicrobial agents with organic acids, phenols, and alcohols as their main ingredients. Their antimicrobial mechanism is to destroy cell membranes, denature proteins, and hinder their metabolism, such as quaternary ammonium salts, organosilicon quaternary ammonium salts, guanidines, and halamine compounds; natural antimicrobial agents are mainly chitin and its derivatives. Chitin has a structure similar to cellulose, such as chitin and chitosan, plant extracts, microbial fermentation products, and insect antimicrobial proteins.

[0004] Chinese patent document CN202011512411.0 discloses an antibacterial textile auxiliary agent and a preparation method thereof. The antibacterial textile auxiliary agent includes 60-80 parts of dioctyl sodium sulfosuccinate, 40-70 parts of disodium ethylenediaminetetraacetic acid, 40-50 parts of ammonium dodecylbenzenesulfonate, 10-20 parts of polymethyl silicone resin, 10-30 parts of zinc benzenesulfinate, 15-20 parts of a cross-linking agent, 14-22 parts of a softener, 40-60 parts of an antibacterial agent, 8-10 parts of a pH regulator, 100-120 parts of deionized water and 20-30 parts of ethanol. The antibacterial agent includes nano-silver activated carbon, nano-silver zeolite and a natural antibacterial agent.

[0005] Common textile flame retardants can be classified in many ways, such as: according to the flame retardant elements contained, they can be divided into halogen flame retardants, phosphorus flame retardants, nitrogen flame retardants, etc.; according to the method of use, they can be divided into additive and reactive flame retardants; according to the components, they can be divided into organic flame retardants, inorganic salt flame retardants and organic-inorganic mixed flame retardants.

[0006] Chinese patent document CN201610907466.9 provides a water-based flame retardant adhesive for textiles that is resistant to burn-through. The adhesive comprises, by weight, 100 parts of a water-based adhesive, 10 to 100 parts of a halogen flame retardant, 3 to 100 parts of a synergistic flame retardant, 0 to 30 parts of an auxiliary agent, and 0 to 100 parts of water. The water-based adhesive comprises an ethylene-vinyl acetate copolymer emulsion and an auxiliary adhesive. The solid content of the ethylene-vinyl acetate copolymer emulsion is 20 to 56 parts. %; the weight ratio of the water-based adhesive to the halogen flame retardant is (1-8):1; the halogen flame retardant includes one or more of decabromodiphenyl ether, decabromodiphenyl ethane, tris (2,3-dibromopropyl) isocyanurate, bromotriazine, ethylenebistetrabromophthalimide, tetrabromobisphenol A, hexabromocyclododecane, octabromoether, chloroester resin, chloropyridinium resin, brominated styrene, brominated epoxy resin, polyvinyl chloride, chlorinated paraffin, and methyl chloride.

[0007] Existing antibacterial and flame-retardant textile auxiliaries still have the following problems: poor stability, narrow application range, difficulty in achieving durable effects, irritation, and high energy consumption in the production process. Summary of the Invention

[0008] In order to address the deficiencies in the prior art, the present invention aims to provide an antibacterial and flame-retardant textile auxiliary agent, a preparation method thereof, and an application thereof, which has excellent antibacterial effects, is highly safe, and is suitable for direct contact with human skin; it also has excellent flame-retardant properties and can effectively delay or interrupt the spread of flames; in addition, the textile auxiliary agent is easier to adhere to the surface of textiles, has good washability, and retains excellent antibacterial and flame-retardant effects after multiple washings.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] An antibacterial flame-retardant textile auxiliary agent is prepared from the following components: 20-30 parts of hydroxyethyl ether chitosan, 15-20 parts of composite functional materials, 15-25 parts of water-based acrylic resin, 3-6 parts of sodium polyphosphate, 3-6 parts of surfactant, 5-15 parts of antioxidant, and 80-100 parts of deionized water.

[0011] Preferably, the method for preparing the composite functional material comprises the following steps:

[0012] (1) Adding nano-silica to a KH550 aqueous solution, soaking at a constant temperature, washing and drying the product to obtain amino-modified nano-silica;

[0013] (2) Adding amino-modified nano-silica and 1H-pyrazole-1-carboxamidine hydrochloride to N,N-dimethylformamide, stirring and reacting under nitrogen protection, filtering the product, washing with deionized water and isopropanol, and drying to obtain modified nano-silica;

[0014] (3) Adding modified expandable graphite and modified nano-silica into KOH solution, stirring the reaction under nitrogen protection, washing, freezing and drying the product to obtain a composite functional material.

[0015] Preferably, in step (1), the concentration of the KH550 aqueous solution is 5-10 wt %, the weight ratio of nano-silica to the KH550 aqueous solution is 1:3-6, and the soaking condition is immersion at 50-60° C. for 1-3 h.

[0016] Preferably, in step (2), the weight-to-volume ratio of amino-modified nano-silica, 1H-pyrazole-1-carboxamidine hydrochloride, and N,N-dimethylformamide is 1 g:1.1-1.5 g:10 mL; and the stirring reaction condition is stirring the reaction at room temperature for 18-24 hours.

[0017] Preferably, in step (3), the concentration of the KOH solution is 30-40 wt %, the weight ratio of the modified expandable graphite, the modified nano-silica, and the KOH solution is 1:1-2:5-10, and the stirring reaction conditions are 80-90° C. and the reaction is carried out for 16-20 h.

[0018] Preferably, in step (3), the preparation method of the modified expandable graphite is: adding expandable graphite to a KH560 aqueous solution, soaking the expanded graphite at a constant temperature, washing and drying the product to obtain the modified expandable graphite.

[0019] Preferably, the concentration of the KH560 aqueous solution is 5-12 wt %, the weight ratio of expandable graphite to the KH560 aqueous solution is 1:3-6, and the immersion condition is immersion at 60-80° C. for 2-3 h.

[0020] The present invention also claims a method for preparing the textile auxiliary agent, comprising the following steps:

[0021] Hydroxyethyl ether chitosan, water-based acrylic resin, and sodium polyphosphate are added to 40-60% of the total mass of deionized water according to weight, stirred once, and then the composite functional material, surfactant, antioxidant, and the remaining deionized water are added, stirred a second time, and the pH of the solution is adjusted to obtain the textile auxiliary agent.

[0022] Preferably, the first stirring condition is 25-35° C., 500-800 r / min, stirring for 2-3 hours; the second stirring condition is 40-50° C., 1000-1500 r / min, stirring for 1-3 hours, and the pH is adjusted to 6.5-7.5.

[0023] Preferably, the surfactant is tallow fatty acid alcohol amide, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, soybean oil fatty acid polyethylene glycol monoester.

[0024] Preferably, the antioxidant is 2,6-di-tert-butyl-4-methylphenol, zinc N-dibutylaminodithiocarbamate, or bis(3,5-di-tert-butyl-4-hydroxyphenyl)sulfide.

[0025] The present invention also claims protection for the use of the textile auxiliary agent in textiles with antibacterial, health-care, deodorizing and flame-retardant functions.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) The present invention provides an antibacterial and flame-retardant textile auxiliary agent with excellent antibacterial effects, high safety, and suitability for direct contact with human skin. It also exhibits excellent flame-retardant properties, capable of forming a good thermal insulation layer on the surface of textiles, reducing their thermal degradation rate and effectively delaying or interrupting the spread of flames. Furthermore, the textile auxiliary agent is more easily attached to the surface of textiles, has good washability, and maintains excellent antibacterial and flame-retardant effects after multiple washes.

[0028] 2) The present invention provides a modified nano-silica, which is modified by amino modification with KH550, thereby improving the dispersibility of the nano-silica in the additive and grafting -NH2 onto the surface of the nano-silica to prepare for subsequent reactions; then, a guanidinyl group is introduced through the reaction of the amino-modified nano-silica and 1H-pyrazole-1-carboxamidine hydrochloride, and the prepared modified nano-silica has excellent bactericidal properties. The alkaline modified nano-silica can attract negatively charged bacteria, restrain the free movement of the bacteria, inhibit their respiration, and cause contact death of the bacteria; at the same time, under the action of electric field attraction, the cell wall and cell membrane will be deformed due to the uneven distribution of negative charge, resulting in physical rupture, causing water, protein, etc. to overflow, and the bacteria to dissolve and die.

[0029] 3) The present invention provides a composite functional material, which uses KH560 to modify expandable graphite, thereby improving the compatibility between expandable graphite and organic additives. At the same time, epoxy groups are introduced into the surface of the expandable graphite, which subsequently reacts with amino groups on the surface of modified nano-silica. The modified nano-silica is loaded on the surface of the expandable graphite, thereby blocking the gaps between the expandable graphite layers, further increasing its expansion ratio, and increasing the expansion thickness of the carbon layer, thereby achieving better isolation from oxygen and heat, and achieving excellent flame retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show schematic diagrams of certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The invention relates to the reaction process of preparing modified nano-silica by amino-modified nano-silica. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0033] Unless otherwise specified, the chemical reagents and materials in the present invention are purchased from commercial sources or synthesized from commercially purchased raw materials.

[0034] The particle size of nano-silica is 20~80nm;

[0035] The particle size of expandable graphite is 80~200 mesh.

[0036] The present invention will be further described below with reference to specific examples.

[0037] Example 1

[0038] A method for preparing an antibacterial flame retardant textile auxiliary agent comprises the following steps:

[0039] (1) Add 10 g of expandable graphite to 60 g of 12 wt% KH560 aqueous solution and soak at 80 °C for 3 h. Wash and dry the product to obtain modified expandable graphite.

[0040] (2) Add 10 g of nano-silica to 60 g of 10 wt% KH550 aqueous solution, soak at 60 ° C for 3 h, wash and dry the product to obtain amino-modified nano-silica;

[0041] (3) Add 10 g of amino-modified nano-silica and 15 g of 1H-pyrazole-1-carboxamidine hydrochloride to 100 mL of N,N-dimethylformamide, stir and react at room temperature for 24 h under nitrogen protection, filter the product, wash it with deionized water and isopropanol 5 times respectively, and dry it to obtain modified nano-silica;

[0042] (4) Add 10 g of modified expandable graphite and 20 g of modified nano-silica to 10 g of KOH solution, stir and react at 90 °C under nitrogen protection for 20 h, wash, freeze and dry the product to obtain a composite functional material;

[0043] (5) 25 g of hydroxyethyl ether chitosan, 20 g of water-based acrylic resin, and 4 g of sodium polyphosphate were added to 50 g of deionized water, and stirred at 30 ° C and 600 r / min for 2.5 h. Then, 18 g of composite functional material, 4 g of tallow fatty acid alcohol amide, 10 g of 2,6-di-tert-butyl-4-methylphenol and the remaining 50 g of deionized water were added, and stirred at 45 ° C and 1200 r / min for 2 h. The pH of the solution was adjusted to 7 to obtain the textile auxiliary agent.

[0044] Example 2

[0045] A method for preparing an antibacterial flame retardant textile auxiliary agent comprises the following steps:

[0046] (1) 10 g of expandable graphite was added to 30 g of 5 wt% KH560 aqueous solution and soaked at 60 °C for 2 h. The product was washed and dried to obtain modified expandable graphite.

[0047] (2) Add 10 g of nano-silica to 30 g of 5 wt% KH550 aqueous solution, soak at 50 °C for 1 h, wash and dry the product to obtain amino-modified nano-silica;

[0048] (3) Add 10 g of amino-modified nano-silica and 11 g of 1H-pyrazole-1-carboxamidine hydrochloride to 100 mL of N,N-dimethylformamide, stir and react at room temperature for 18 h under nitrogen protection, filter the product, wash it with deionized water and isopropanol 5 times, and dry it to obtain modified nano-silica;

[0049] (4) Add 10 g of modified expandable graphite and 10 g of modified nano-silica to 5 g of KOH solution, stir and react at 80 °C under nitrogen protection for 16 h, wash, freeze and dry the product to obtain a composite functional material;

[0050] (5) 25 g of hydroxyethyl ether chitosan, 20 g of water-based acrylic resin, and 4 g of sodium polyphosphate were added to 50 g of deionized water, and stirred at 30 ° C and 600 r / min for 2.5 h. Then, 18 g of composite functional material, 4 g of soybean oil fatty acid polyethylene glycol monoester, 10 g of 2,6-di-tert-butyl-4-methylphenol and the remaining 50 g of deionized water were added, and stirred at 45 ° C and 1200 r / min for 2 h. The pH of the solution was adjusted to 7 to obtain the textile auxiliary agent.

[0051] Example 3

[0052] A method for preparing an antibacterial flame retardant textile auxiliary agent comprises the following steps:

[0053] (1) 10 g of expandable graphite was added to 40 g of 7 wt% KH560 aqueous solution and soaked at a constant temperature of 65 °C for 2.5 h. The product was washed and dried to obtain modified expandable graphite.

[0054] (2) Add 10 g of nano-silica to 40 g of 7 wt% KH550 aqueous solution, and soak at a constant temperature of 55 ° C for 1.5 h. Wash and dry the product to obtain amino-modified nano-silica;

[0055] (3) Add 10 g of amino-modified nano-silica and 12 g of 1H-pyrazole-1-carboxamidine hydrochloride to 100 mL of N,N-dimethylformamide, stir and react at room temperature for 20 h under nitrogen protection, filter the product, wash it with deionized water and isopropanol 5 times, and dry it to obtain modified nano-silica;

[0056] (4) Add 10 g of modified expandable graphite and 14 g of modified nano-silica to 7 g of KOH solution, stir and react at 85 °C under nitrogen protection for 18 h, wash, freeze and dry the product to obtain a composite functional material;

[0057] (5) 25 g of hydroxyethyl ether chitosan, 20 g of water-based acrylic resin, and 4 g of sodium polyphosphate were added to 50 g of deionized water, and stirred at 30 ° C and 600 r / min for 2.5 h. Then, 18 g of composite functional material, 4 g of tallow fatty acid alcohol amide, 10 g of 2,6-di-tert-butyl-4-methylphenol and the remaining 50 g of deionized water were added, and stirred at 45 ° C and 1200 r / min for 2 h. The pH of the solution was adjusted to 7 to obtain the textile auxiliary agent.

[0058] Example 4

[0059] A method for preparing an antibacterial flame retardant textile auxiliary agent comprises the following steps:

[0060] (1) 10 g of expandable graphite was added to 50 g of 10 wt% KH560 aqueous solution and soaked at 75 °C for 2.5 h. The product was washed and dried to obtain modified expandable graphite.

[0061] (2) Add 10 g of nano-silica to 50 g of 8 wt% KH550 aqueous solution, and soak at 55 °C for 2 h. Wash and dry the product to obtain amino-modified nano-silica.

[0062] (3) Add 10 g of amino-modified nano-silica and 14 g of 1H-pyrazole-1-carboxamidine hydrochloride to 100 mL of N,N-dimethylformamide, stir and react at room temperature for 22 h under nitrogen protection, filter the product, wash it with deionized water and isopropanol 5 times, and dry it to obtain modified nano-silica;

[0063] (4) Add 10 g of modified expandable graphite and 18 g of modified nano-silica to 8 g of KOH solution, stir and react at 85 °C under nitrogen protection for 18 h, wash, freeze and dry the product to obtain a composite functional material;

[0064] (5) 25 g of hydroxyethyl ether chitosan, 20 g of water-based acrylic resin, and 4 g of sodium polyphosphate were added to 50 g of deionized water, and stirred at 30 ° C and 600 r / min for 2.5 h. Then, 18 g of composite functional material, 4 g of tallow fatty acid amide, 10 g of 2,6-di-tert-butyl-4-methylphenol and the remaining 50 g of deionized water were added, and stirred at 45 ° C and 1200 r / min for 2 h. The pH of the solution was adjusted to 7 to obtain the textile auxiliary agent.

[0065] Comparative Example 1

[0066] A method for preparing a textile auxiliary agent comprises the following steps:

[0067] (1) Add 10 g of nano-silica to 60 g of 10 wt% KH550 aqueous solution, soak at 60 ° C for 3 h, wash and dry the product to obtain amino-modified nano-silica;

[0068] (2) Add 10 g of amino-modified nano-silica and 15 g of 1H-pyrazole-1-carboxamidine hydrochloride to 100 mL of N,N-dimethylformamide, stir and react at room temperature for 24 h under nitrogen protection, filter the product, wash it with deionized water and isopropanol 5 times respectively, and dry it to obtain modified nano-silica;

[0069] (3) Add 10 g of expandable graphite and 20 g of modified nano-silica to 10 g of KOH solution, stir and react at 90 °C under nitrogen protection for 20 h, wash, freeze and dry the product to obtain a composite functional material;

[0070] (4) 25 g of hydroxyethyl ether chitosan, 20 g of water-based acrylic resin, and 4 g of sodium polyphosphate were added to 50 g of deionized water, and stirred at 30 ° C and 600 r / min for 2.5 h. Then, 18 g of composite functional material, 4 g of tallow fatty acid amide, 10 g of 2,6-di-tert-butyl-4-methylphenol and the remaining 50 g of deionized water were added, and stirred at 45 ° C and 1200 r / min for 2 h. The pH of the solution was adjusted to 7 to obtain the textile auxiliary agent.

[0071] Comparative Example 2

[0072] A method for preparing a textile auxiliary agent comprises the following steps:

[0073] (1) Add 10 g of expandable graphite to 60 g of 12 wt% KH560 aqueous solution and soak at 80 °C for 3 h. Wash and dry the product to obtain modified expandable graphite.

[0074] (2) Add 10 g of modified expandable graphite and 20 g of nano-silica to 10 g of KOH solution, stir and react at 90 °C under nitrogen protection for 20 h, wash, freeze and dry the product to obtain a composite functional material;

[0075] (3) 25 g of hydroxyethyl ether chitosan, 20 g of water-based acrylic resin, and 4 g of sodium polyphosphate were added to 50 g of deionized water, and stirred at 30 ° C and 600 r / min for 2.5 h. Then, 18 g of composite functional material, 4 g of tallow fatty acid amide, 10 g of 2,6-di-tert-butyl-4-methylphenol and the remaining 50 g of deionized water were added, and stirred at 45 ° C and 1200 r / min for 2 h. The pH of the solution was adjusted to 7 to obtain the textile auxiliary agent.

[0076] A fabric made of pure cotton (C40×C40 / 144×76) was used as the test fabric. A finishing solution was prepared, to which the textile auxiliaries prepared in Examples 1-3 and Comparative Examples 1-2 were added at a rate of 40 g / L. The solution was then added to the setting machine's mixing tank and stirred evenly. The setting machine temperature was set at 140°C for 60 seconds. The antibacterial properties of the test fabric were tested according to GB / T 20944.3-2008, "Evaluation of Antimicrobial Properties of Textiles - Part 3: Oscillation Method." The test results are shown in Table 1. The fabric was washed 50 times and then tested for flame retardancy using the vertical combustion method, in accordance with GB 8965.1-2020, "Flame-Retardant Protective Clothing." The test results are shown in Table 2.

[0077] Table 1 Antibacterial properties of tested fabrics

[0078]

[0079] Table 2 Flame retardant properties of tested fabrics

[0080]

[0081] 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. An antibacterial flame retardant textile auxiliary agent, characterized in that: The invention is prepared from the following components: 20-30 parts of hydroxyethyl ether chitosan, 15-20 parts of composite functional material, 15-25 parts of water-based acrylic resin, 3-6 parts of sodium polyphosphate, 3-6 parts of surfactant, 5-15 parts of antioxidant, and 80-100 parts of deionized water; The method for preparing the composite functional material comprises the following steps: (1) Adding nano-silica to a KH550 aqueous solution, soaking at a constant temperature, washing and drying the product to obtain amino-modified nano-silica; (2) Adding amino-modified nano-silica and 1H-pyrazole-1-carboxamidine hydrochloride to N,N-dimethylformamide, stirring and reacting under nitrogen protection, filtering the product, washing with deionized water and isopropanol, and drying to obtain modified nano-silica; (3) Adding modified expandable graphite and modified nano-silica to KOH solution, stirring and reacting under nitrogen protection, washing, freezing and drying the product to obtain a composite functional material; Wherein, in step (3), the preparation method of the modified expandable graphite is: adding expandable graphite to a KH560 aqueous solution, soaking it at a constant temperature, washing and drying the product to obtain the modified expandable graphite.

2. The textile auxiliary agent according to claim 1, characterized in that In step (1), the concentration of the KH550 aqueous solution is 5-10 wt %, the weight ratio of nano-silica to the KH550 aqueous solution is 1:3-6, and the soaking condition is immersion at 50-60° C. for 1-3 h.

3. The textile auxiliary agent according to claim 1, characterized in that In step (2), the weight-to-volume ratio of amino-modified nano-silica, 1H-pyrazole-1-carboxamidine hydrochloride, and N,N-dimethylformamide is 1 g:1.1-1.5 g:10 mL; and the stirring reaction condition is stirring the reaction at room temperature for 18-24 hours.

4. The textile auxiliary agent according to claim 1, characterized in that In step (3), the concentration of the KOH solution is 30-40 wt %, the weight ratio of the modified expandable graphite, the modified nano-silica, and the KOH solution is 1:1-2:5-10, and the stirring reaction conditions are 80-90° C. and the reaction is carried out for 16-20 h.

5. The textile auxiliary agent according to claim 1, characterized in that The concentration of the KH560 aqueous solution is 5-12 wt %, the weight ratio of expandable graphite to the KH560 aqueous solution is 1:3-6, and the immersion conditions are immersion at 60-80° C. for 2-3 hours.

6. A method for preparing the textile auxiliary agent according to any one of claims 1 to 5, characterized in that: The steps include: Hydroxyethyl ether chitosan, water-based acrylic resin, and sodium polyphosphate are added to 40-60% of the total mass of deionized water according to weight, stirred once, and then the composite functional material, surfactant, antioxidant, and the remaining deionized water are added, stirred a second time, and the pH of the solution is adjusted to obtain the textile auxiliary agent.

7. The preparation method according to claim 6, characterized in that The first stirring condition is 25~35℃, 500~800r / min for 2~3h; the second stirring condition is 40~50℃, 1000~1500r / min for 1~3h, and the pH is adjusted to 6.5~7.

5.

8. Use of the textile auxiliary agent according to any one of claims 1 to 5 in textiles with antibacterial, health-care, deodorizing and flame-retardant functions.

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