Antibacterial high-toughness wig and preparation process thereof

Abstract

The present application relates to the wig technical field, specifically to a kind of antibacterial high toughness wig and its preparation process.A kind of antibacterial high toughness wig preparation process includes: the preparation of modified antibacterial heterojunction, the preparation of antibacterial compound, the preparation of toughening agent, the preparation of antibacterial high toughness wig.The present application constructs "physical / chemical / photothermal" multiple synergistic antibacterial system, antibacterial heterojunction is compounded with two-dimensional Ti3C2, and high-efficiency persistent sterilization is realized by physical puncture, Ag+ slow-release, ROS oxidation and local micro-thermal effect.In-situ grafting modification is carried out using polymeric quaternary ammonium salt and styrene, the problem of nano-powder agglomeration is solved, and molecular level anchoring is formed between fiber substrate and coating, so that persistent antibacterial and washing resistance are ensured.Toughening agent uses rigid-flexible coupling molecular design, balances toughening and stiffness, and realizes "electron+ion" dual-mode antistatic with Ti3C2 electronic conductive network, and comprehensively improves wig toughness and wearing comfort.

Description

Technical Field

[0001] This invention relates to the field of wig technology, specifically to an antibacterial, high-tenacity wig and its manufacturing process. Background Technology

[0002] As an important hair product that combines decoration and hair loss correction, wigs are experiencing continuous growth in demand in the fashion, beauty, and medical rehabilitation fields. The base materials for wigs are mainly divided into two categories: natural human hair and chemically synthesized fibers. Due to the scarcity of human hair resources, its high price, and the difficulty in standardizing its quality, chemically synthesized fibers, represented by polyethylene terephthalate (PET), polyacrylonitrile (PAN), polyvinyl chloride (PVC), and various modified polyesters, have become the dominant materials in the wig market. However, existing chemically synthesized fiber wigs still face two prominent performance defects in actual long-term wear and use, severely restricting product quality and user experience.

[0003] Firstly, wigs lack sufficient antibacterial properties. When worn close to the scalp, wigs are in a warm, humid microenvironment created by sweat, sebum, and external dust, making them highly susceptible to the growth and accumulation of bacteria and fungi. The proliferation of microorganisms not only produces unpleasant odors but can also cause scalp itching, folliculitis, and even worsen hair loss. To impart antibacterial properties to wigs, post-treatment processes are commonly used, involving impregnation or spraying to attach antibacterial agents such as silver ions, quaternary ammonium salts, and chitosan to the surface of the finished hair strands. While these methods can achieve some initial antibacterial effect, the antibacterial layer has weak adhesion to the fiber itself and quickly washes away after several washes and combing, resulting in poor wash resistance and difficulty in achieving long-lasting antibacterial properties. Furthermore, the surface coating alters the shine and coefficient of friction of the hair strands, causing a rough feel, easy tangling, and accelerated shedding of the finishing agent.

[0004] Secondly, wigs lack mechanical toughness and have a short lifespan. Wig fibers must withstand repeated stretching and bending stresses from combing, weaving, styling, and daily wear. While conventional synthetic wigs, especially PET wigs, have advantages such as high initial modulus and ease of shaping, their elongation at break is low, resulting in poor tear and flexural strength. Under repeated stretching and cumulative minor damage, microcracks easily form on the fiber surface, which can then develop into splitting, branching, and even breakage, leading to widespread "frizz" and hair loss. To improve toughness, the industry has attempted to introduce elastomers and polyesters for blending modification, or add rigid nanoparticles for toughening. However, the introduction of elastomers often leads to a significant reduction in fiber modulus, an overly soft feel, and a loss of the wig's required stiffness and style retention; nanoparticles, on the other hand, often agglomerate, causing a deterioration in spinnability, a surge in breakage rates, and difficulty in achieving continuous and stable production.

[0005] More importantly, it is difficult to achieve antibacterial properties and high toughness synergistically in a single wig fiber. Current technologies, such as melt blending to directly introduce antibacterial agents into the fiber matrix to address washability, result in these heterogeneous antibacterial particles acting as stress concentration points during fiber stretching and orientation, significantly deteriorating the fiber's mechanical properties. This leads to a substantial reduction in strength, elongation at break, and flexural life, further worsening the already fragile toughness. If the amount of antibacterial agent added is reduced to preserve toughness, the antibacterial effect is negligible. In other words, existing wig materials present a trade-off between long-lasting antibacterial properties and high toughness; currently, there is a lack of a comprehensive solution that can achieve both highly efficient and durable antibacterial properties while also endowing the fiber with excellent toughness and breakage resistance.

[0006] Therefore, the development and preparation of a wig fiber that combines long-lasting and highly effective antibacterial properties, high toughness, good feel and processability has become a key technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an antibacterial and high-toughness wig and its preparation process.

[0008] This invention provides a manufacturing process for an antibacterial, high-tenacity wig, comprising: S1: Preparation of modified antibacterial heterojunction; UiO-66 was reacted with silver nitrate and thioacetamide in ethanol to prepare an antibacterial heterojunction, which was then surface-modified with γ-methacryloxypropyltrimethoxysilane to obtain a modified antibacterial heterojunction. S2: Preparation of the antibacterial complex; Layered Ti3C2 powder was pretreated with γ-methacryloxypropyltrimethoxysilane, and then emulsion polymerized with modified antibacterial heterojunction, N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediamine chloride and styrene under potassium persulfate initiation to obtain an antibacterial complex. S3: Preparation of toughening agent; A toughening agent was prepared by esterification of cyclohexane and methoxy polyethylene glycol 200 under the catalysis of p-toluenesulfonic acid. S4: Preparation of antibacterial and high-tenacity wigs; An antibacterial composite is dispersed in water to form a suspension, which is then mixed with cationic waterborne polyurethane, light stabilizer, wetting and leveling agent, and defoamer to prepare an antibacterial composite dip coating. Polyvinyl chloride, polybutylene succinate, compatibilizer, heat stabilizer, dispersant, toughening agent, nano silica, and flame retardant are mixed and melt-spun, stretched, and heat-set to obtain wig fibers. The wig fibers are then impregnated with the antibacterial composite dip coating, dried, and sewn with a hairnet and cap to obtain an antibacterial high-toughness wig.

[0009] As a preferred aspect, S1: the preparation of the modified antibacterial heterostructure specifically includes the following steps: S1.1: Place 5-6 parts by weight of UiO-66 into 100-120 parts by weight of anhydrous ethanol, and ultrasonically disperse for 20-30 min. Then add 1-2 parts by weight of silver nitrate, and reflux in an oil bath at 80-82℃ for 30-40 min. Next, add 0.3-0.4 parts by weight of thioacetamide, and continue to reflux in an oil bath at 80-82℃ for 1-2 h. After the reaction is complete, cool to room temperature, then centrifuge and wash the centrifuged precipitate 3-5 times with anhydrous ethanol. Finally, vacuum dry to obtain the antibacterial heterojunction. S1.2: Under argon protection, 2-3 parts by weight of the antibacterial heterojunction were added to 30-40 parts by weight of 75wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4-4.5, and the mixture was ultrasonically dispersed for 20-30 min. Then, 4-5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 5-8 min. Then, the mixture was magnetically stirred at 70-72℃ under argon protection for 2-3 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at a high speed of 10000 rpm. The washed precipitate was then freeze-dried to obtain the modified antibacterial heterojunction.

[0010] As a preferred aspect, S2: the preparation of the antibacterial complex specifically includes the following steps: S2.1: Under argon protection, 2-3 parts by weight of layered Ti3C2 powder were added to 30-40 parts by weight of 95wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4-4.5, and the mixture was ultrasonically dispersed for 20-30 min. Then, 4-5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 5-8 min. Then, the mixture was magnetically stirred at 70-72℃ under argon protection for 2-3 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at 10000 rpm. The washed precipitate was then freeze-dried to obtain pretreated layered Ti3C2 powder. S2.2: Add 6-8 parts by weight of N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediium chloride and 4-5 parts by weight of styrene to 30-40 parts by weight of deionized water and stir to obtain a mixed emulsion. Add 2-3 parts by weight of pretreated layered Ti3C2 powder and 5-8 parts by weight of modified antibacterial heterojunction to 80-100 parts by weight of 5wt% ethanol aqueous solution and sonicate for 20-30 min. Then, add the above mixed emulsion at 75-78℃, and then add 0.2-0.3 parts by weight of potassium persulfate. Stir and react at 400-500 rpm for 3-4 h under argon atmosphere. After the reaction is completed and cooled to room temperature, wash 3-5 times with anhydrous ethanol by centrifugation. Freeze-dry the washed precipitate to obtain the antibacterial complex.

[0011] As a preferred aspect, S3: the preparation of the toughening agent specifically includes the following steps: S3.1: In a three-necked flask equipped with a thermometer, stirrer and Dean-Stark water separator, add 60-70 parts by weight of cyclohexane, 35-40 parts by weight of cyclohexanecarboxylic acid, 20-22 parts by weight of methoxy polyethylene glycol 200, and then add 2-3 parts by weight of p-toluenesulfonic acid. Heat under normal pressure and reflux, and separate water using a Dean-Stark water separator. React for 2-3 hours. After the reaction is complete, cool to room temperature to obtain the reaction solution. S3.2: Place the reaction solution into a rotary evaporator and perform rotary evaporation under a water bath heating condition of 50-52℃ until no more liquid distills out of the receiving flask of the rotary evaporator. Transfer the concentrated crude product to a separatory funnel, add 1-2 times the volume of saturated sodium carbonate aqueous solution and shake and wash 3-5 times. After standing and separating the layers, separate the liquid and discard the aqueous layer. Dry the organic product layer with anhydrous magnesium sulfate for 24-26 hours. Finally, filter to obtain the toughening agent.

[0012] As a preferred aspect, S4: the preparation of the antibacterial, high-tenacity wig specifically includes the following steps: S4.1: Add 2-5 parts by weight of antibacterial composite powder to 70-80 parts by weight of deionized water, then ultrasonically disperse in an ice-water bath for 20-30 minutes to obtain an antibacterial composite powder suspension. Then, under stirring at 400-600 rpm, slowly add the antibacterial composite powder suspension to 15-20 parts by weight of a cationic aqueous polyurethane dispersion with a solid content of 30-35%, and continue stirring for 20-30 minutes. Then add 1-2 parts by weight of light stabilizer, 0.1-0.3 parts by weight of wetting and leveling agent, and 0.1-0.2 parts by weight of defoamer, and continue stirring for 15-20 minutes to obtain an antibacterial composite dip coating. S4.2: Mix 50-70 parts by weight of polyvinyl chloride, 20-30 parts by weight of polybutylene succinate, 5-10 parts by weight of compatibilizer, 2-4 parts by weight of heat stabilizer, 1-2 parts by weight of dispersant, 1-3 parts by weight of nano silica, 8-10 parts by weight of toughening agent, 5-10 parts by weight of flame retardant, and 1-2 parts by weight of black pigment after drying, and then add the mixture to a single screw extruder for melt extrusion to obtain nascent fibers. Cool the nascent fibers by blowing air, and then apply oil to the cooled nascent fibers through an oil roller. Stretch the oiled antibacterial high-toughness wig fibers through a drawing machine at 60-90℃ for 2-5 times to obtain oriented fibers. Heat-set the stretched oriented fibers at 70-80℃ for 15-25 minutes to obtain heat-set wig fibers. S4.3: The heat-set hair strands are completely immersed in the antibacterial composite coating and soaked at room temperature for 5-10 minutes. Then, they are vertically pulled out at a uniform speed of 0.5-1.0 cm / s, excess coating is drained off, and they are placed in a forced-air drying oven and dried at 65-75℃ for 40-60 minutes to obtain antibacterial high-toughness hair strands. The antibacterial high-toughness hair strands are sewn together with the hairpiece and the net cap to obtain an antibacterial high-toughness wig.

[0013] As a preferred aspect, the light stabilizer in S4.1 is UV-2908, the wetting and leveling agent is polyether-modified polysiloxane BYK-349, and the defoamer is polysiloxane defoamer BYK-024.

[0014] As a preferred aspect, the compatibilizer in step S4.2 is chlorinated polyethylene, the heat stabilizer is calcium-zinc composite stabilizer, the dispersant is vinyl bis-stearamide, and the flame retardant is a mixture of tris(2-chloropropyl) phosphate and nano magnesium hydroxide in a mass ratio of 1:2.

[0015] As a preferred aspect, in step S4.2, the orifice diameter of the spinneret in the melt extrusion is 0.4-0.6 mm, and the extruder temperature is 220-240℃.

[0016] As a preferred aspect, the oiling agent used in step S4.2 is a polyether polymer.

[0017] The present invention also provides an antibacterial and high-tenacity wig, which is prepared by any of the antibacterial and high-tenacity wig preparation processes described in any one of the claims.

[0018] The present invention has the following advantages: 1. The antibacterial complex prepared in this invention contains an antibacterial heterostructure and two-dimensional layered Ti3C2. The antibacterial heterostructure has nanoscale sharp edges and excellent specific surface area. When bacteria attach, the rigid polyhedral structure of UiO-66 can physically scratch the cell membrane. Furthermore, the antibacterial heterostructure can slowly and in minute quantities release silver ions in a humid microenvironment, blocking bacterial DNA replication and respiratory chain electron transport, thus achieving a bactericidal effect. On the other hand, the two-dimensional layered Ti3C2 has extremely strong electron transport capabilities and peroxidase-like activity, capable of catalyzing trace amounts of oxygen or hydrogen peroxide in the environment to produce a large amount of reactive oxygen species, destroying the bacterial antioxidant defense system. Simultaneously, the two-dimensional layered Ti3C2 possesses… It has excellent photothermal conversion efficiency. During wear, the mild heating from daily light or body temperature can cause the antibacterial complex to produce a local micro-thermal effect. This effect not only accelerates the dissolution of silver ions, but also enhances the oxidative activity of reactive oxygen species, and works with silver ions to cause irreversible denaturation of bacterial proteins, thereby improving the antibacterial effect. Furthermore, the introduced antibacterial heterogeneous synergistic two-dimensional layered Ti3C2 can help improve the visible light responsiveness of the antibacterial complex and improve photocatalytic efficiency, thereby achieving a highly efficient and rapid bactericidal effect. This multi-mechanism linkage of "physical / chemical / photothermal" enables the antibacterial complex to have the ability to quickly kill and inhibit various tinea capitis pathogens for a long time, and it is not easy to induce bacteria to develop drug resistance.

[0019] 2. This invention also employs N,N,N-trimethyl-3-(2-methacrylamido)-1-propanammonium chloride and styrene to synergistically modify antibacterial heterostructures and two-dimensional layered Ti3C2. In-situ graft copolymerization is then performed on the surfaces of the pretreated antibacterial heterostructures and two-dimensional layered Ti3C2, achieving functional modification of the compounded antibacterial powder. N,N,N-trimethyl-3-(2-methacrylamido)-1-propanammonium chloride is a polymerizable quaternary ammonium salt. After graft copolymerization, the surface of the antibacterial complex is uniformly covered with a high density of cationic quaternary ammonium groups. These groups strongly adsorb onto the negatively charged bacterial cell membrane through electrostatic interactions, while the long-chain alkyl hydrophobic segments penetrate the lipid bilayer, causing leakage of cell contents and achieving highly efficient contact sterilization. More importantly, the electrostatic repulsion between cationic groups and the steric hindrance effect of the polymer backbone forcibly open up the layered Ti3C2 sheets and prevent the antibacterial heterojunction nanoparticles from approaching each other. This fundamentally solves the serious agglomeration problem of nanoparticles in post-processing and use, ensuring dispersion stability. Styrene, as a comonomer, is introduced to construct a hydrophobic aromatic graft layer on the surface of the antibacterial powder. This interfacial transition layer has excellent affinity with the wig substrate and can significantly reduce interfacial tension. On the other hand, the graft layer has an elastic buffering effect, so when the wig strands are stretched or bent, the internal inorganic filler will not... By creating stress concentration points, and working in conjunction with toughening agents, the wig's resistance to bending and pulling is enhanced, making it less prone to breakage even after repeated combing. Furthermore, the styrene segments in the grafted layer have good compatibility with the polyurethane coating macromolecules. During drying and film formation, the grafted chains can intertwine with the polyurethane molecular chains, forming a molecular-level anchor at the interface. After the coating cures and forms a film, the antibacterial complex is encapsulated and fixed to the surface of the wig by the polyurethane resin film, forming a continuous protective film. During repeated washing and friction, the polyurethane film has a certain degree of elasticity, buffering the mechanical wear from combing and delaying the shedding of antibacterial powder. Even if a small amount of the surface coating is slightly worn, the fibers still contain a large amount of antibacterial complex, continuously providing an antibacterial effect.

[0020] 3. The toughening agent in this invention is composed of a hydrophobic cyclohexyl rigid end connected to a methoxy polyethylene glycol 200 flexible segment. During the melt extrusion process of the wig fiber, its flexible methoxy polyethylene glycol long chain can effectively insert between the polyvinyl chloride and polybutylene succinate macromolecular chains, weakening the intermolecular van der Waals forces, significantly improving the chain segment mobility, and endowing the fiber with extremely high elongation at break and tear toughness. At the same time, the cyclohexyl carbamate at the end group has large steric hindrance and rigidity. When the fiber is subjected to tensile stress, the "anchoring" effect of the cyclohexyl group can inhibit excessive slippage of the molecular chain and prevent irreversible plastic deformation. This "rigid-flexible coupling" mechanism successfully solves the problems of excessive softness and loss of stiffness during traditional elastomer toughening. This results in wigs that are both strong and durable, resistant to splitting and breakage, while maintaining a realistic drape and shape retention. Furthermore, the PEG segments in the toughening agent molecules possess excellent moisture absorption and wicking properties, forming an extremely thin layer of bound water molecules on the wig surface. This effectively reduces fiber surface resistance, decreases the generation and accumulation of static electricity, and prevents the wig from becoming frizzy or attracting dust due to static electricity. Combined with the electronically conductive network constructed from two-dimensional layered Ti3C2, this creates a dual-mode synergy of "electronic conductivity + ionic conductivity" in the antistatic mechanism, resulting in extremely low surface resistivity and difficulty in charge accumulation. Simultaneously, this smooth interface layer improves the frictional behavior between the nascent fibers and the oil rollers and drafting rollers during melt spinning, making the drafting and setting process more uniform and stable. Ultimately, this results in a smoother, more realistic feel to the wig. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the manufacturing process of the antibacterial, high-tenacity wig used in an embodiment of the present invention. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this invention.

[0023] The cationic waterborne polyurethane is model FS20566M.

[0024] Example 1: A preparation process for an antibacterial, high-tenacity wig, referring to... Figure 1 ,include: S1: Preparation of modified antibacterial heterostructure S1.1: 5 parts by weight of UiO-66 were placed in 100 parts by weight of anhydrous ethanol and ultrasonically dispersed for 20 min. Then, 1 part by weight of silver nitrate was added, and the mixture was refluxed in an oil bath at 80°C for 30 min. Next, 0.3 parts by weight of thioacetamide was added, and the mixture was refluxed in an oil bath at 80°C for 1 h. After the reaction was completed, the mixture was cooled to room temperature, centrifuged, and the precipitate was washed three times with anhydrous ethanol. Finally, the mixture was vacuum dried to obtain the antibacterial heterojunction. S1.2: Under argon protection, 2 parts by weight of antibacterial heterojunction were added to 30 parts by weight of 75 wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4, and the mixture was ultrasonically dispersed for 20 min. Then, 4 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 5 min. Then, the mixture was magnetically stirred at 70 °C under argon protection for 2 h. After the reaction was completed, the mixture was washed by high-speed centrifugation at 10,000 rpm with anhydrous ethanol. The precipitate after washing was freeze-dried to obtain the modified antibacterial heterojunction. S2: Preparation of the antibacterial complex S2.1: Under argon protection, 2 parts by weight of layered Ti3C2 powder were added to 30 parts by weight of 95wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4, and the mixture was ultrasonically dispersed for 20 min. Then, 4 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 5 min. Then, the mixture was magnetically stirred at 70℃ under argon protection for 2 h. After the reaction was completed, the mixture was washed by high-speed centrifugation at 10000 rpm with anhydrous ethanol. The washed precipitate was then freeze-dried to obtain pretreated layered Ti3C2 powder. S2.2: Add 6 parts by weight of N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediium chloride and 4 parts by weight of styrene to 30 parts by weight of deionized water, stir and mix to obtain a mixed emulsion. Add 2 parts by weight of pretreated layered Ti3C2 powder and 5 parts by weight of modified antibacterial heterojunction to 80 parts by weight of 5wt% ethanol aqueous solution, sonicate and disperse for 20 min. Then, add the above mixed emulsion at 75℃, and then add 0.2 parts by weight of potassium persulfate. Stir and react at 400 rpm for 3 h under argon atmosphere. After the reaction is completed and cooled to room temperature, wash three times with anhydrous ethanol by centrifugation. Freeze-dry the washed precipitate to obtain the antibacterial complex. S3: Preparation of toughening agent S3.1: In a three-necked flask equipped with a thermometer, stirrer and Dean-Stark water separator, add 60 parts by weight of cyclohexane, 35 parts by weight of cyclohexane carboxylic acid and 20 parts by weight of methoxy polyethylene glycol 200 in sequence, and then add 2 parts by weight of p-toluenesulfonic acid. Heat under normal pressure and reflux, and separate water using Dean-Stark water separator. React for 2 hours. After the reaction is complete, cool to room temperature to obtain the reaction solution. S3.2: The reaction solution is placed in a rotary evaporator and rotated under a water bath heating condition of 50°C until no more liquid distills out of the receiving flask of the rotary evaporator. The concentrated crude product is transferred to a separatory funnel, and 1 volume of saturated sodium carbonate aqueous solution is added for three shaking washes. After standing and layering, the liquid is separated and the aqueous layer is discarded. The organic product layer is dried with anhydrous magnesium sulfate for 24 hours. Finally, the toughening agent is obtained by filtration. S4: Preparation of antibacterial and high-tenacity wigs S4.1: Add 2 parts by weight of antibacterial composite powder to 70 parts by weight of deionized water, and then ultrasonically disperse in an ice water bath for 20 min to obtain an antibacterial composite powder suspension. Then, under stirring at 400 rpm, slowly add the antibacterial composite powder suspension to 15 parts by weight of cationic waterborne polyurethane aqueous dispersion with a solid content of 30%, and continue stirring for 20 min. Then add 1 part by weight of light stabilizer UV-2908, 0.1 parts by weight of polyether modified polysiloxane BYK-349 and 0.1 parts by weight of polysiloxane defoamer BYK-024, and continue stirring for 15 min to obtain an antibacterial composite dip coating. S4.2: 50 parts by weight of polyvinyl chloride, 20 parts by weight of polybutylene succinate, 5 parts by weight of chlorinated polyethylene, 2 parts by weight of calcium-zinc composite stabilizer, 1 part by weight of vinyl bis-stearamide, 1 part by weight of nano-silica, 8 parts by weight of toughening agent, 5 parts by weight of flame retardant, and 1 part by weight of black pigment are dried, mixed evenly, and then added to a single screw extruder. The nascent fibers are melt-extruded to obtain nascent fibers. The spinneret has an orifice diameter of 0.4 mm, the extruder temperature is 220℃, and the nascent fibers are cooled by blowing air. The cooled nascent fibers are then oiled by an oil roller. The oil is a polyether polymer. The oiled antibacterial high-toughness wig is then stretched by a stretching machine at 60℃ to obtain oriented fibers. The stretched oriented fibers are then heat-set at 70℃ for 15 minutes to obtain heat-set wigs. The flame retardant is composed of tris(2-chloropropyl) phosphate and nano magnesium hydroxide in a mass ratio of 1:2. S4.3: The heat-set hair strands are completely immersed in the antibacterial composite coating and soaked at room temperature for 5 minutes. Then, they are vertically lifted out at a uniform speed of 0.5 cm / s, excess coating is drained off, and they are placed in a forced-air drying oven and dried at 65°C for 40 minutes to obtain antibacterial high-toughness hair strands. The antibacterial high-toughness hair strands are sewn together with the hairpiece and the net cap to obtain an antibacterial high-toughness wig.

[0025] Example 2, a preparation process for an antibacterial, high-tenacity wig, see [link to example]. Figure 1 ,include: S1: Preparation of modified antibacterial heterostructure S1.1: 6 parts by weight of UiO-66 were placed in 120 parts by weight of anhydrous ethanol and ultrasonically dispersed for 30 min. Then, 2 parts by weight of silver nitrate were added, and the mixture was refluxed in an oil bath at 82°C for 40 min. Next, 0.4 parts by weight of thioacetamide were added, and the mixture was refluxed in an oil bath at 82°C for 2 h. After the reaction was completed, the mixture was cooled to room temperature, centrifuged, and the precipitate was washed 5 times with anhydrous ethanol. Finally, the mixture was vacuum dried to obtain the antibacterial heterojunction. S1.2: Under argon protection, 3 parts by weight of antibacterial heterojunction were added to 40 parts by weight of 75 wt% ethanol aqueous solution, then glacial acetic acid was added to adjust the pH to 4.5, and the mixture was ultrasonically dispersed for 30 min. Then, 5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 8 min. Then, the mixture was magnetically stirred at 72 °C under argon protection for 3 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at a high speed of 10,000 rpm. The precipitate after washing was freeze-dried to obtain the modified antibacterial heterojunction. S2: Preparation of the antibacterial complex S2.1: Under argon protection, 3 parts by weight of layered Ti3C2 powder were added to 40 parts by weight of 95 wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4.5, and the mixture was ultrasonically dispersed for 30 min. Then, 5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 8 min. Then, the mixture was magnetically stirred at 72 °C under argon protection for 3 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at a high speed of 10,000 rpm. The washed precipitate was then freeze-dried to obtain pretreated layered Ti3C2 powder. S2.2: Add 8 parts by weight of N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediamine chloride and 5 parts by weight of styrene to 40 parts by weight of deionized water and stir to obtain a mixed emulsion. Add 3 parts by weight of pretreated layered Ti3C2 powder and 8 parts by weight of modified antibacterial heterojunction to 100 parts by weight of 5wt% ethanol aqueous solution and sonicate for 30 min. Then, add the above mixed emulsion at 78℃, and then add 0.3 parts by weight of potassium persulfate. Stir at 500 rpm for 4 h under argon atmosphere. After the reaction is completed and cooled to room temperature, wash 5 times with anhydrous ethanol by centrifugation. Freeze-dry the washed precipitate to obtain the antibacterial complex. S3: Preparation of toughening agent S3.1: In a three-necked flask equipped with a thermometer, stirrer and Dean-Stark water separator, add 70 parts by weight of cyclohexane, 40 parts by weight of cyclohexane carboxylic acid and 22 parts by weight of methoxy polyethylene glycol 200 in sequence, and then add 3 parts by weight of p-toluenesulfonic acid. Heat under normal pressure and reflux, and separate water using Dean-Stark water separator. React for 3 hours. After the reaction is complete, cool to room temperature to obtain the reaction solution. S3.2: The reaction solution was placed in a rotary evaporator and evaporated under a water bath heating condition of 52°C until no more liquid was distilled from the receiving flask of the rotary evaporator. The concentrated crude product was transferred to a separatory funnel, and 2 times the volume of saturated sodium carbonate aqueous solution was added for 5 shaking washes. After standing and layering, the liquid was separated and the aqueous layer was discarded. The organic product layer was dried with anhydrous magnesium sulfate for 26 hours. Finally, the toughening agent was obtained by filtration. S4: Preparation of antibacterial and high-tenacity wigs S4.1: Add 5 parts by weight of antibacterial composite powder to 80 parts by weight of deionized water, and then ultrasonically disperse in an ice water bath for 30 min to obtain an antibacterial composite powder suspension. Then, under stirring at 600 rpm, slowly add the antibacterial composite powder suspension to 20 parts by weight of cationic waterborne polyurethane aqueous dispersion with a solid content of 35%, and continue stirring for 30 min. Then add 2 parts by weight of light stabilizer UV-2908, 0.3 parts by weight of polyether modified polysiloxane BYK-349 and 0.2 parts by weight of polysiloxane defoamer BYK-024, and continue stirring for 20 min to obtain an antibacterial composite dip coating. S4.2: 70 parts by weight of polyvinyl chloride, 30 parts by weight of polybutylene succinate, 10 parts by weight of chlorinated polyethylene, 4 parts by weight of calcium-zinc composite stabilizer, 2 parts by weight of vinyl bis-stearamide, 3 parts by weight of nano-silica, 10 parts by weight of toughening agent, 10 parts by weight of flame retardant, and 2 parts by weight of black pigment are dried, mixed evenly, and then added to a single screw extruder. The nascent fibers are melt-extruded to obtain nascent fibers. The spinneret has an orifice diameter of 0.6 mm, the extruder temperature is 240℃, and the nascent fibers are cooled by blowing air. The cooled nascent fibers are then oiled by an oil roller. The oil is a polyether polymer. The oiled antibacterial high-toughness wig is then stretched by a stretching machine at 90℃ for 5 times to obtain oriented fibers. The stretched oriented fibers are then heat-set at 80℃ for 25 minutes to obtain heat-set wig fibers. The flame retardant is composed of tris(2-chloropropyl) phosphate and nano magnesium hydroxide in a mass ratio of 1:2. S4.3: The heat-set hair strands are completely immersed in the antibacterial composite coating and soaked at room temperature for 10 minutes. Then, they are vertically pulled out at a uniform speed of 1.0 cm / s, excess coating is drained off, and they are placed in a forced-air drying oven and dried at 75°C for 60 minutes to obtain antibacterial high-toughness hair strands. The antibacterial high-toughness hair strands are sewn together with the hairpiece and the net cap to obtain an antibacterial high-toughness wig.

[0026] Example 3, a preparation process for an antibacterial and high-tenacity wig, see [link to example]. Figure 1 ,include: S1: Preparation of modified antibacterial heterostructure S1.1: 5.5 parts by weight of UiO-66 were placed in 110 parts by weight of anhydrous ethanol and ultrasonically dispersed for 25 min. Then, 1.5 parts by weight of silver nitrate were added, and the mixture was refluxed in an oil bath at 81°C for 35 min. Next, 0.35 parts by weight of thioacetamide were added, and the mixture was refluxed in an oil bath at 81°C for 1.5 h. After the reaction was completed, the mixture was cooled to room temperature, centrifuged, and the precipitate was washed four times with anhydrous ethanol. Finally, the mixture was vacuum dried to obtain the antibacterial heterojunction. S1.2: Under argon protection, 2.5 parts by weight of antibacterial heterojunction were added to 35 parts by weight of 75 wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4.25, and the mixture was ultrasonically dispersed for 25 min. Then, 4.5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 6.5 min. Then, the mixture was magnetically stirred at 71 °C under argon protection for 2.5 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at a high speed of 10,000 rpm. The precipitate after washing was freeze-dried to obtain the modified antibacterial heterojunction. S2: Preparation of the antibacterial complex S2.1: Under argon protection, 2.5 parts by weight of layered Ti3C2 powder were added to 35 parts by weight of 95wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4.25, and the mixture was ultrasonically dispersed for 25 min. Then, 4.5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 6.5 min. Then, the mixture was magnetically stirred at 71℃ under argon protection for 2.5 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at a high speed of 10000 rpm. The washed precipitate was then freeze-dried to obtain pretreated layered Ti3C2 powder. S2.2: Add 6 parts by weight of N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediamine chloride and 4.5 parts by weight of styrene to 35 parts by weight of deionized water and stir to obtain a mixed emulsion. Add 2.5 parts by weight of pretreated layered Ti3C2 powder and 6.5 parts by weight of modified antibacterial heterojunction to 90 parts by weight of 5wt% ethanol aqueous solution and sonicate for 25 min. Then, add the above mixed emulsion at 76℃, and then add 0.25 parts by weight of potassium persulfate. Stir and react at 450 rpm for 3.5 h under argon atmosphere. After the reaction is completed and cooled to room temperature, wash 4 times with anhydrous ethanol by centrifugation. Freeze-dry the washed precipitate to obtain the antibacterial complex. S3: Preparation of toughening agent S3.1: In a three-necked flask equipped with a thermometer, stirrer and Dean-Stark water separator, add 65 parts by weight of cyclohexane, 37 parts by weight of cyclohexane carboxylic acid and 21 parts by weight of methoxy polyethylene glycol 200 in sequence, and then add 2.5 parts by weight of p-toluenesulfonic acid. Heat under normal pressure and reflux, and separate water using Dean-Stark water separator. React for 2.5 hours. After the reaction is complete, cool to room temperature to obtain the reaction solution. S3.2: The reaction solution was placed in a rotary evaporator and evaporated under a water bath heating condition of 51°C until no more liquid was distilled from the receiving flask of the rotary evaporator. The concentrated crude product was transferred to a separatory funnel and 1.5 times the volume of saturated sodium carbonate aqueous solution was added for 4 shaking washes. After standing and layering, the liquid was separated and the aqueous layer was discarded. The organic product layer was dried with anhydrous magnesium sulfate for 25 hours. Finally, the toughening agent was obtained by filtration. S4: Preparation of antibacterial and high-tenacity wigs S4.1: Add 3 parts by weight of antibacterial composite powder to 75 parts by weight of deionized water, and then ultrasonically disperse in an ice water bath for 25 min to obtain an antibacterial composite powder suspension. Then, under stirring at 500 rpm, slowly add the antibacterial composite powder suspension to 17 parts by weight of cationic waterborne polyurethane aqueous dispersion with a solid content of 32%, and continue stirring for 25 min. Then add 1.5 parts by weight of light stabilizer UV-2908, 0.2 parts by weight of polyether modified polysiloxane BYK-349 and 0.15 parts by weight of polysiloxane defoamer BYK-024, and continue stirring for 17 min to obtain an antibacterial composite dip coating. S4.2: 60 parts by weight of polyvinyl chloride, 25 parts by weight of polybutylene succinate, 8 parts by weight of chlorinated polyethylene, 3 parts by weight of calcium-zinc composite stabilizer, 1.5 parts by weight of vinyl bis-stearamide, 2 parts by weight of nano-silica, 9 parts by weight of toughening agent, 7 parts by weight of flame retardant, and 1.5 parts by weight of black pigment are dried, mixed evenly, and then added to a single screw extruder. The nascent fibers are melt-extruded to obtain nascent fibers. The spinneret has an orifice diameter of 0.5 mm, the extruder temperature is 230℃, and the nascent fibers are cooled by blowing air. The cooled nascent fibers are then oiled by an oil roller. The oil is a polyether polymer. The oiled antibacterial high-toughness wig is then stretched by a stretching machine at 75℃ by 3 times to obtain oriented fibers. The stretched oriented fibers are then heat-set at 75℃ for 20 minutes to obtain heat-set wigs. The flame retardant is composed of tris(2-chloropropyl) phosphate and nano magnesium hydroxide in a mass ratio of 1:2. S4.3: The heat-set hair strands are completely immersed in the antibacterial composite coating and soaked at room temperature for 7 minutes. Then, they are vertically lifted out at a uniform speed of 0.8 cm / s, excess coating is drained off, and they are placed in a forced-air drying oven and dried at 70°C for 50 minutes to obtain antibacterial high-toughness hair strands. The antibacterial high-toughness hair strands are sewn together with the hairpiece and the net cap to obtain an antibacterial high-toughness wig.

[0027] Comparative Example 1 differs from Example 1 in that step S1 is removed, and the modified antibacterial heterojunction in step S2.2 is replaced with an equal amount of pretreated layered Ti3C2 powder, while the remaining steps remain unchanged to prepare an antibacterial high-toughness wig, which is referred to as Comparative Example 1.

[0028] Comparative Example 2 differs from Example 1 in that step S2.1 is removed, and the pretreated layered Ti3C2 powder in step S2.2 is replaced with an equal amount of modified antibacterial heterojunction. The remaining steps are unchanged to prepare an antibacterial high-toughness wig, which is referred to as Comparative Example 2.

[0029] Comparative Example 3 differs from Example 1 in that steps S1.2 and S2 are removed, and the antibacterial compound powder in step S4.1 is replaced with an equal amount of layered Ti3C2 powder and antibacterial heterojunction in a physical mixture. The weight ratio of layered Ti3C2 powder to antibacterial heterojunction is 2:5. The remaining steps remain unchanged to prepare an antibacterial high-toughness wig, which is referred to as Comparative Example 3.

[0030] Comparative Example 4 differs from Example 1 in that steps S1-S2 and S4.1 and S4.3 are removed. In addition, 2 parts by weight of nano-titanium dioxide silver-loaded antibacterial agent are added to the formula in S4.2, mixed evenly, and then added to a single-screw extruder. The remaining steps remain unchanged to prepare heat-set wigs. The heat-set wigs are then sewn together with hairnets and caps to obtain an antibacterial and high-tenacity wig, which is referred to as Comparative Example 4.

[0031] Comparative Example 5 differs from Example 1 in that the toughening agent in steps S3 and S4.2 is removed, while the remaining steps remain unchanged. This is an antibacterial, high-toughness wig, denoted as Comparative Example 5.

[0032] The antibacterial and high-toughness wigs prepared in Examples 1-3 and Comparative Examples 1-4 were tested for antibacterial properties and water resistance. The tests were conducted three times and the average value was taken. The test results are shown in Table 1.

[0033] Referencing GB / T20944.3-2008 "Evaluation of Antimicrobial Properties of Textiles - Part 3: Shaking Method". The test bacteria were Staphylococcus aureus and Candida albicans. Each group of wig samples was washed with water according to the standard procedure (referring to GB / T8629, water temperature 40℃), and the antibacterial rate was tested after 30 washes.

[0034] Table 1. Results of antibacterial properties and washability tests in Examples 1-3 and Comparative Examples 1-4 Example 1 99.9 99.8 99.2 99.0 Example 2 99.9 99.9 99.3 99.2 Example 3 99.9 99.8 99.2 99.1 Comparative Example 1 94.5 94.3 93.7 93.4 Comparative Example 2 95.7 95.2 94.9 94.4 Comparative Example 3 98.4 98.1 74.5 73.9 Comparative Example 4 85.4 84.9 55.9 55.3 As can be seen from the data in Table 1, the initial antibacterial rates of Comparative Examples 1-2 all decreased. The data of Comparative Example 1 indicates that the lack of synergy between Ag⁺ sustained release and UiO-66 physical puncture resulted in a reduction in the bactericidal pathway. The data of Comparative Example 2 indicates that the lack of photothermal enhancement of active oxygen and microthermal acceleration of Ag⁺ dissolution effect of Ti3C2 resulted in a decrease in overall bactericidal efficiency. This indicates that the antibacterial heterostructure and two-dimensional layered Ti3C2 in the antibacterial complex have significant synergistic antibacterial effects. As can be seen from the data of Examples 1-3, the "physical / chemical / photothermal" multi-mechanism linkage in this invention enables the antibacterial complex to have rapid killing and long-term inhibition ability against various tinea capitis pathogens after washing.

[0035] The data from Comparative Example 3 shows that the antibacterial rate dropped sharply after 30 washes, indicating that the use of N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediol chloride and styrene to synergistically modify the antibacterial heterostructure and two-dimensional layered Ti3C2 can form molecular-level anchoring at the interface after the coating is cured into a film, thus preventing the antibacterial effect from failing after washing and achieving a continuous antibacterial effect.

[0036] As can be seen from the data of Comparative Example 4, the antibacterial effect of conventionally adding antibacterial agents into the fiber matrix and the antibacterial effect of washing are both lower than those of the Example. This indicates that the present invention solves the problem that existing antibacterial agents are quickly lost after several washes and combing frictions, have poor wash resistance, and are difficult to achieve long-lasting antibacterial effect.

[0037] Mechanical properties were tested on Examples 1-3 and Comparative Examples 3 and 5, and the results are shown in Table 2.

[0038] A single-fiber strength tester was used, with a clamping distance of 20 mm and a tensile speed of 20 mm / min, to test the breaking strength and elongation at break. 30 fibers were tested in each group and the average value was taken.

[0039] The fiber bending fatigue tester was used to repeatedly bend the fiber at a 90° angle under a pretension of 0.5 cN / dtex, and the number of bends at which the fiber broke was recorded to evaluate the bending resistance.

[0040] Table 2. Mechanical property test results of Examples 1-3 and Comparative Examples 3 and 5 Example 1 2.74 73.2 7520 Example 2 2.89 75.6 7680 Example 3 2.81 74.5 7580 Comparative Example 3 2.34 64.3 5210 Comparative Example 5 2.22 53.3 3520 As can be seen from the data in Table 2, the process of this invention can stably impart excellent toughness and bending resistance to the hair strands within the parameter range. This is attributed to the synergistic effect of the toughening agent's "rigid-flexible coupling" toughening and grafting modification in resolving nanoparticle agglomeration. Comparative Example 3 shows a significant decrease in mechanical properties because the ungrafted nanoparticles severely agglomerate in the matrix, becoming stress concentration points during tension and bending, inducing microcracks and accelerating fracture. This, conversely, demonstrates the crucial role of grafting modification in powder dispersion and ensuring mechanical properties. Comparative Example 5 shows that the toughening agent of this invention, through its "rigid-flexible coupling" molecular design, significantly improves fracture strength, elongation at break, and bending resistance.

[0041] The antibacterial and high-toughness wigs prepared in Examples 1-3, Comparative Examples 2 and 5 were subjected to antistatic tests, in accordance with GB / T12703.4-2010. Three tests were performed, and the average value was taken. The results are shown in Table 3.

[0042] Table 3. Antistatic test results of Examples 1-3 and Comparative Examples 2 and 5 Example 1 <![CDATA[6.2×10 9 ]]> Example 2 <![CDATA[4.9×10 9 ]]> Example 3 <![CDATA[5.5×10 9 ]]> Comparative Example 2 <![CDATA[2.6×10 12 ]]> Comparative Example 5 <![CDATA[9.8×10 10 ]]> As can be seen from the data in Table 3, the antistatic effect of Comparative Example 2 and Comparative Example 5 was significantly reduced compared with the Example, indicating that the toughening agent and two-dimensional layered Ti3C2 in this invention can form a dual-mode synergy of "electronic conductivity + ionic conductivity" in the antistatic mechanism, which together reduces the surface resistivity of the hair strand.

[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Parts not described in detail in this specification are prior art known to those skilled in the art.

Claims

1. A manufacturing process for an antibacterial, high-tenacity wig, characterized in that, include: S1: Preparation of modified antibacterial heterojunction; UiO-66 was reacted with silver nitrate and thioacetamide in ethanol to prepare an antibacterial heterojunction, which was then surface-modified with γ-methacryloxypropyltrimethoxysilane to obtain a modified antibacterial heterojunction. S2: Preparation of the antibacterial complex; Layered Ti3C2 powder was pretreated with γ-methacryloxypropyltrimethoxysilane, and then emulsion polymerized with modified antibacterial heterojunction, N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediamine chloride and styrene under potassium persulfate initiation to obtain an antibacterial complex. S3: Preparation of toughening agent; A toughening agent was prepared by esterification of cyclohexane and methoxy polyethylene glycol 200 under the catalysis of p-toluenesulfonic acid. S4: Preparation of antibacterial and high-tenacity wigs; An antibacterial composite is dispersed in water to form a suspension, which is then mixed with cationic waterborne polyurethane, light stabilizer, wetting and leveling agent, and defoamer to prepare an antibacterial composite dip coating. Polyvinyl chloride, polybutylene succinate, compatibilizer, heat stabilizer, dispersant, toughening agent, nano silica, and flame retardant are mixed and melt-spun, stretched, and heat-set to obtain wig fibers. The wig fibers are then impregnated with the antibacterial composite dip coating, dried, and sewn with a hairnet and cap to obtain an antibacterial high-toughness wig.

2. The preparation process of an antibacterial, high-tenacity wig according to claim 1, characterized in that, S1: Preparation of modified antibacterial heterojunction, specifically including the following steps: S1.1: Place 5-6 parts by weight of UiO-66 into 100-120 parts by weight of anhydrous ethanol, and ultrasonically disperse for 20-30 min. Then add 1-2 parts by weight of silver nitrate, and reflux in an oil bath at 80-82℃ for 30-40 min. Next, add 0.3-0.4 parts by weight of thioacetamide, and continue to reflux in an oil bath at 80-82℃ for 1-2 h. After the reaction is complete, cool to room temperature, then centrifuge and wash the centrifuged precipitate 3-5 times with anhydrous ethanol. Finally, vacuum dry to obtain the antibacterial heterojunction. S1.2: Under argon protection, 2-3 parts by weight of the antibacterial heterojunction were added to 30-40 parts by weight of 75wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4-4.5, and the mixture was ultrasonically dispersed for 20-30 min. Then, 4-5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 5-8 min. Then, the mixture was magnetically stirred at 70-72℃ under argon protection for 2-3 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at a high speed of 10000 rpm. The washed precipitate was then freeze-dried to obtain the modified antibacterial heterojunction.

3. The preparation process of an antibacterial, high-tenacity wig according to claim 1, characterized in that, S2: The preparation of the antibacterial complex includes the following steps: S2.1: Under argon protection, 2-3 parts by weight of layered Ti3C2 powder were added to 30-40 parts by weight of 95wt% ethanol aqueous solution. Then, glacial acetic acid was added to adjust the pH to 4-4.5, and the mixture was ultrasonically dispersed for 20-30 min. Then, 4-5 parts by weight of γ-methacryloyloxypropyltrimethoxysilane were added, and the mixture was ultrasonically treated for another 5-8 min. Then, the mixture was magnetically stirred at 70-72℃ under argon protection for 2-3 h. After the reaction was completed, the mixture was washed with anhydrous ethanol at 10000 rpm. The washed precipitate was then freeze-dried to obtain pretreated layered Ti3C2 powder. S2.2: Add 6-8 parts by weight of N,N,N-trimethyl-3-(2-methacrylamido)-1-propanediium chloride and 4-5 parts by weight of styrene to 30-40 parts by weight of deionized water and stir to obtain a mixed emulsion. Add 2-3 parts by weight of pretreated layered Ti3C2 powder and 5-8 parts by weight of modified antibacterial heterojunction to 80-100 parts by weight of 5wt% ethanol aqueous solution and sonicate for 20-30 min. Then, add the above mixed emulsion at 75-78℃, and then add 0.2-0.3 parts by weight of potassium persulfate. Stir and react at 400-500 rpm for 3-4 h under argon atmosphere. After the reaction is completed and cooled to room temperature, wash 3-5 times with anhydrous ethanol by centrifugation. Freeze-dry the washed precipitate to obtain the antibacterial complex.

4. The preparation process of an antibacterial, high-tenacity wig according to claim 1, characterized in that, S3: Preparation of toughening agent, specifically including the following steps: S3.1: In a three-necked flask equipped with a thermometer, stirrer and Dean-Stark water separator, add 60-70 parts by weight of cyclohexane, 35-40 parts by weight of cyclohexanecarboxylic acid, 20-22 parts by weight of methoxy polyethylene glycol 200, and then add 2-3 parts by weight of p-toluenesulfonic acid. Heat under normal pressure and reflux, and separate water using a Dean-Stark water separator. React for 2-3 hours. After the reaction is complete, cool to room temperature to obtain the reaction solution. S3.2: Place the reaction solution into a rotary evaporator and perform rotary evaporation under a water bath heating condition of 50-52℃ until no more liquid distills out of the receiving flask of the rotary evaporator. Transfer the concentrated crude product to a separatory funnel, add 1-2 times the volume of saturated sodium carbonate aqueous solution and shake and wash 3-5 times. After standing and separating the layers, separate the liquid and discard the aqueous layer. Dry the organic product layer with anhydrous magnesium sulfate for 24-26 hours. Finally, filter to obtain the toughening agent.

5. The preparation process of an antibacterial, high-tenacity wig according to claim 1, characterized in that, S4: The preparation of antibacterial and high-tenacity wigs includes the following steps: S4.1: Add 2-5 parts by weight of antibacterial composite powder to 70-80 parts by weight of deionized water, then ultrasonically disperse in an ice-water bath for 20-30 minutes to obtain an antibacterial composite powder suspension. Then, under stirring at 400-600 rpm, slowly add the antibacterial composite powder suspension to 15-20 parts by weight of a cationic aqueous polyurethane dispersion with a solid content of 30-35%, and continue stirring for 20-30 minutes. Then add 1-2 parts by weight of light stabilizer, 0.1-0.3 parts by weight of wetting and leveling agent, and 0.1-0.2 parts by weight of defoamer, and continue stirring for 15-20 minutes to obtain an antibacterial composite dip coating. S4.2: Mix 50-70 parts by weight of polyvinyl chloride, 20-30 parts by weight of polybutylene succinate, 5-10 parts by weight of compatibilizer, 2-4 parts by weight of heat stabilizer, 1-2 parts by weight of dispersant, 1-3 parts by weight of nano silica, 8-10 parts by weight of toughening agent, 5-10 parts by weight of flame retardant, and 1-2 parts by weight of black pigment after drying, and then add the mixture to a single screw extruder for melt extrusion to obtain nascent fibers. Cool the nascent fibers by blowing air, and then apply oil to the cooled nascent fibers through an oil roller. Stretch the oiled antibacterial high-toughness wig fibers through a drawing machine at 60-90℃ for 2-5 times to obtain oriented fibers. Heat-set the stretched oriented fibers at 70-80℃ for 15-25 minutes to obtain heat-set wig fibers. S4.3: The heat-set hair strands are completely immersed in the antibacterial composite coating and soaked at room temperature for 5-10 minutes. Then, they are vertically pulled out at a uniform speed of 0.5-1.0 cm / s, excess coating is drained off, and they are placed in a forced-air drying oven and dried at 65-75℃ for 40-60 minutes to obtain antibacterial high-toughness hair strands. The antibacterial high-toughness hair strands are sewn together with the hairpiece and the net cap to obtain an antibacterial high-toughness wig.

6. The preparation process of an antibacterial, high-tenacity wig according to claim 5, characterized in that, The light stabilizer in S4.1 is UV-2908, the wetting and leveling agent is polyether-modified polysiloxane BYK-349, and the defoamer is polysiloxane defoamer BYK-024.

7. The preparation process of an antibacterial, high-tenacity wig according to claim 5, characterized in that, The compatibilizer in step S4.2 is chlorinated polyethylene, the heat stabilizer is calcium-zinc composite stabilizer, the dispersant is vinyl bis-stearamide, and the flame retardant is a mixture of tris(2-chloropropyl) phosphate and nano magnesium hydroxide in a mass ratio of 1:

2.

8. The preparation process of an antibacterial, high-tenacity wig according to claim 5, characterized in that, In step S4.2, the spinneret has an orifice diameter of 0.4-0.6 mm and the extruder temperature is 220-240℃ during melt extrusion.

9. The preparation process of an antibacterial, high-tenacity wig according to claim 5, characterized in that, In step S4.2, the oiling agent used is a polyether polymer.

10. An antibacterial, high-tenacity wig, characterized in that, It is prepared by the preparation process of an antibacterial and high-toughness wig as described in any one of claims 1-9.

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