Anti-wrinkle antibacterial finishing agent for fabric and preparation method of anti-wrinkle antibacterial finishing agent

Abstract

The invention relates to the field of fabric finishing agents, in particular to an anti-wrinkle and antibacterial finishing agent for fabric and a preparation method of the anti-wrinkle and antibacterial finishing agent, and is used for solving the problems that an existing anti-wrinkle finishing agent is poor in anti-wrinkle effect and poor in environmental protection performance, and an existing antibacterial finishing agent is poor in antibacterial and antibacterial effect and can affect the overall quality of the fabric. According to the anti-wrinkle and antibacterial finishing agent for the fabric, cationic epoxy polysiloxane is used as a main raw material and can react with active groups on fabric fiber molecules to form a net-shaped cross-linked structure, the anti-wrinkle effect is achieved, a large number of organic silicon groups are introduced, the elastic recovery capacity of the fabric is remarkably improved, and the anti-wrinkle and antibacterial finishing agent for the fabric has a good anti-wrinkle effect. According to the anti-wrinkle and anti-bacterial finishing agent for the fabric, the modified silver ion doped titanium dioxide is added into the anti-wrinkle and anti-bacterial finishing agent for the fabric, so that the original form of the fabric can be quickly recovered, wrinkles are reduced, meanwhile, the antibacterial activity of the fabric is improved, the antibacterial and anti-bacterial performance of the fabric can be further improved after the fabric is treated, and the anti-wrinkle and anti-bacterial finishing agent is suitable for popularization and application. The growth and reproduction of bacteria are effectively inhibited.

Description

Technical Field

[0001] The invention relates to the field of fabric finishing agents, and in particular to an anti-wrinkle and antibacterial finishing agent for fabrics and a preparation method thereof. Background Art

[0002] With the improvement of living standards, consumers have increasingly stringent requirements for the performance of fabrics. On the one hand, during daily wear and use, fabrics are prone to wrinkles, which not only affects the appearance, but also reduces the comfort of wearing. Frequent ironing is cumbersome. Traditional anti-wrinkle finishing methods usually use formaldehyde finishing agents. Although they can improve the anti-wrinkle performance of fabrics to a certain extent, formaldehyde is volatile and toxic, which will cause harm to human health. In addition, formaldehyde may continue to be released during subsequent processing and use, and its environmental protection is extremely poor. On the other hand, fabrics, as items that are in close contact with the human body, are easily contaminated with various bacteria and fungi. In a warm and humid environment, microorganisms breed and multiply rapidly, which may cause odor, discoloration, mildew and other problems, and even spread diseases, endangering human health. Some existing antibacterial finishing agents have a narrow antibacterial spectrum, poor antibacterial and antibacterial effects, and will also have a significant negative impact on the original properties of the fabric, such as the feel, color and anti-wrinkle performance, reducing the overall quality of the fabric.

[0003] Therefore, it is of great practical significance to develop an anti-wrinkle and antibacterial finishing agent for fabrics that is both efficient and environmentally friendly and can simultaneously achieve anti-wrinkle and antibacterial functions, and a preparation method thereof. Summary of the invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide an anti-wrinkle and antibacterial finishing agent for fabrics and a preparation method thereof, which solves the problems that the existing anti-wrinkle finishing agents have poor anti-wrinkle effect and poor environmental performance, and the existing antibacterial finishing agents have poor antibacterial and antibacterial effects and will also affect the overall quality of the fabric.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following components in parts by weight:

[0007] 30-60 parts of cationic epoxy polysiloxane, 1.2-8.4 parts of modified silver ion-doped titanium dioxide, 4-6 parts of sodium thiosulfate, 3-5 parts of polyethylene wax, 1-5 parts of sodium lauryl sulfate and 1000 parts of deionized water;

[0008] Wherein, the cationic epoxy polysiloxane is prepared by the following steps:

[0009] Step a1: adding imidazole, potassium hydroxide and dimethyl sulfoxide to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, introducing nitrogen protection, stirring the reaction at a temperature of 25-30° C. and a stirring rate of 300-400 r / min for 1-1.5 hours, then adding 1,4-dichlorobutane and heating to 45-50° C. and continuing to stir the reaction for 10-15 hours. After the reaction is completed, the reaction product is cooled to room temperature, then added to ice water, and then vacuum filtered. The filter cake is washed with distilled water for 3-5 times, and then placed in a vacuum drying oven and dried at a temperature of 40-45° C. for 2-3 hours to obtain a bisimidazole alkane;

[0010] Step a2: adding bisimidazolidinone, chloropropylmethyldimethoxysilane and anhydrous acetonitrile into a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a reflux condenser, introducing nitrogen protection, stirring the reaction for 10-15 minutes at a temperature of 25-30° C. and a stirring rate of 300-400 r / min, then heating to reflux and continuing to stir the reaction for 20-25 hours, and after the reaction is completed, cooling the reaction product to room temperature, and then rotary evaporation to remove the solvent to obtain imidazolidinone cationic siloxane;

[0011] Step a3: octamethylcyclotetrasiloxane, imidazolium cationic siloxane, tetramethylcyclotetrasiloxane and tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 25-30° C. and a stirring rate of 300-400 r / min for 20-30 min, and then the mixture is heated to 45-50° C. and the stirring reaction is continued for 20-30 min. Then, concentrated sulfuric acid is added and the mixture is heated to 60-65° C. and the stirring reaction is continued for 5-6 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the pH value is adjusted to 7 with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a hydrogen-containing cationic polysiloxane;

[0012] Step a4: Add hydrogen-containing cationic polysiloxane, allyl glycidyl ether and anhydrous toluene to a three-necked flask equipped with a stirrer, a thermometer and an air duct, introduce nitrogen protection, stir and react for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then continue to stir and react for 20-30 minutes at a temperature of 50-55°C, then add chloroplatinic acid-isopropanol solution and continue to stir and react for 3-5 hours at a temperature of 90-95°C. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation to obtain a cationic epoxy polysiloxane.

[0013] As a further solution of the present invention: the usage ratio of the imidazole, potassium hydroxide, dimethyl sulfoxide and 1,4-dichlorobutane in step a1 is 22-25 mmol: 25-30 mmol: 30-40 mL: 10 mmol.

[0014] As a further solution of the present invention: the dosage ratio of the bisimidazolidinone, chloropropylmethyldimethoxysilane and anhydrous acetonitrile in step a2 is 10 mmol: 20 mmol: 40-50 mL.

[0015] As a further solution of the present invention: the usage ratio of the octamethylcyclotetrasiloxane, imidazolium cationic siloxane, tetramethylcyclotetrasiloxane, tetramethyldisiloxane and concentrated sulfuric acid in step a3 is 40-50 mmol: 12-18 mmol: 10-15 mmol: 10-15 mmol: 0.4-0.8 g.

[0016] As a further solution of the present invention: the mass fraction of the concentrated sulfuric acid in step a3 is 98%.

[0017] As a further solution of the present invention: the usage ratio of the hydrogen-containing cationic polysiloxane, allyl glycidyl ether, anhydrous toluene and chloroplatinic acid-isopropanol solution in step a4 is 10g:1.1-2.7g:80-100mL:5-10mL.

[0018] As a further solution of the present invention: the chloroplatinic acid-isopropanol solution in step a4 is a solution formed by dissolving chloroplatinic acid in isopropanol at a ratio of 1 g: 45-50 mL.

[0019] As a further solution of the present invention: the modified silver ion-doped titanium dioxide is prepared by the following steps:

[0020] Step b1: adding tetrabutyl titanate and anhydrous ethanol to a three-necked flask equipped with a stirrer, a thermometer and an air duct, introducing nitrogen protection, stirring and reacting for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then adding silver nitrate, concentrated ammonia water and anhydrous acetonitrile and continuing to stir and react for 20-30 minutes, then heating to 60-65°C and continuing to stir and react for 10-15 hours, after the reaction is completed, cooling the reaction product to room temperature, then centrifuging, washing the precipitate with anhydrous ethanol and distilled water for 3-5 times in turn, then placing it in a vacuum drying oven, and drying it at a temperature of 60-65°C for 3-5 hours to obtain silver ion-doped titanium dioxide;

[0021] Step b2: Add silver ion-doped titanium dioxide, γ-glycidyloxypropyltrimethoxysilane, anhydrous ethanol and deionized water into a three-necked flask equipped with a stirrer, a thermometer and an air duct, introduce nitrogen protection, and stir the reaction for 20-30 hours at a temperature of 25-30°C and a stirring rate of 300-400r / min. After the reaction is completed, the reaction product is centrifuged, and the precipitate is placed in a vacuum drying oven and dried at a temperature of 30-35°C for 8-10 hours to obtain modified silver ion-doped titanium dioxide.

[0022] As a further solution of the present invention: the dosage ratio of the tetrabutyl titanate, anhydrous ethanol, silver nitrate, concentrated ammonia water and anhydrous acetonitrile in step b1 is 3.5-4.5 mL: 25-30 mL: 0.1-0.5 g: 1-2 mL: 10-12 mL.

[0023] As a further solution of the present invention: the mass fraction of the concentrated ammonia water in step b1 is 25%.

[0024] As a further solution of the present invention: the usage ratio of the silver ion-doped titanium dioxide, γ-glycidyloxypropyltrimethoxysilane, anhydrous ethanol and deionized water in step b2 is 5g:1.2-5.6g:50-60mL:5-9mL.

[0025] As a further solution of the present invention: a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0026] Step 1: Weigh 30-60 parts of cationic epoxy polysiloxane, 1.2-8.4 parts of modified silver ion-doped titanium dioxide, 4-6 parts of sodium thiosulfate, 3-5 parts of polyethylene wax, 1-5 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts, and set aside;

[0027] Step 2: Add cationic epoxy polysiloxane, modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 600-800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0028] Beneficial effects of the present invention:

[0029] The invention discloses an anti-wrinkle and antibacterial finishing agent for fabrics and a preparation method thereof. The anti-wrinkle and antibacterial finishing agent for fabrics is obtained by adding cationic epoxy polysiloxane, modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer and stirring and mixing. The anti-wrinkle and antibacterial finishing agent for fabrics uses cationic epoxy polysiloxane as a main raw material, which can react with active groups (hydroxyl groups and amino groups) on fabric fiber molecules to form a network cross-linked structure, thereby achieving an anti-wrinkle effect. In addition, a large number of organic silicon groups are introduced to significantly enhance the elastic recovery energy of the fabric. The anti-wrinkle and antibacterial finishing agent for fabrics can further improve the antibacterial and antibacterial properties of the fabrics, and effectively inhibit the growth and reproduction of bacteria. The anti-wrinkle and antibacterial finishing agent for fabrics is suitable for all kinds of textile fabrics. The treated fabrics not only have excellent anti-wrinkle and antibacterial properties, but also maintain their original softness and breathability, improve the comfort and health of wearing, and have good application prospects.

[0030] In the process of preparing the anti-wrinkle and antibacterial finishing agent for fabrics, a cationic epoxy polysiloxane is first prepared, and imidazole and 1,4-dichlorobutane are reacted, and the NH bond on the imidazole reacts with the chlorine atom on the 1,4-dichlorobutane to obtain a diimidazole alkane, and then the diimidazole alkane and chloropropylmethyldimethoxysilane react, and the tertiary amine group on the diimidazole alkane reacts with the chlorine atom on the chloropropylmethyldimethoxysilane to form an imidazolium cation, and siloxane is introduced at both ends to obtain an imidazolium cationic siloxane, and then octamethylcyclotetrasiloxane, imidazolium cationic siloxane, tetramethylcyclotetrasiloxane and tetramethyldisiloxane are used as polymerization monomers for polymerization to form a hydrogen-containing cationic polysiloxane containing Si-H bonds, imidazolium cations and a high degree of crosslinking, and finally the hydrogen-containing cationic polysiloxane and allyl glycidyl ether react to form a hydrogen-containing cationic polysiloxane. The Si-H bond on the fiber undergoes a silyl hydrogen addition reaction with the alkenyl group on the allyl glycidyl ether, and a large number of epoxy groups are introduced at the same time to obtain a cationic epoxy polysiloxane; the epoxy groups on the cationic epoxy polysiloxane have good reactivity and can be cross-linked with the active groups on the fiber to form a bond, and the introduced organic silicon has good flexibility and elastic recovery ability, and can form a flexible protective film on the surface of the fabric, giving the fabric excellent anti-wrinkle performance, and when the fabric is squeezed and rubbed by external force to produce wrinkles, this protective film can rely on its own elasticity to cause the fabric fiber to return to its original state, reduce the formation of wrinkles, and even if wrinkles are formed, they can restore themselves to flatness in a short time, thereby improving the flatness and appearance durability of the fabric, and at the same time, the introduced imidazole cation can be adsorbed and combined with the negatively charged cell membrane of bacteria, thereby causing the bacteria to be inactivated, and having an antibacterial and antibacterial effect;

[0031] In the process of preparing the anti-wrinkle and antibacterial finishing agent for fabrics, a modified silver ion-doped titanium dioxide is also prepared. Titanium dioxide is prepared using tetrabutyl titanate as a titanium source, and silver ions are formed by silver nitrate and doped in titanium dioxide to obtain silver ion-doped titanium dioxide. Then, the silver ion-doped titanium dioxide is treated with γ-glycidyloxypropyltrimethoxysilane. γ-glycidyloxypropyltrimethoxysilane is grafted onto the particle surface of the silver ion-doped titanium dioxide, and reactive groups such as Si-OH and epoxy groups are introduced to obtain modified silver ion-doped titanium dioxide. The modified silver ion-doped titanium dioxide is treated with γ-glycidyloxypropyltrimethoxysilane. The reactive groups enable it to be grafted onto the fabric fibers in the form of chemical bonds, thereby enhancing the binding force between the two and preventing the modified silver ion-doped titanium dioxide from falling off, making the antibacterial effect long-lasting. In addition, titanium dioxide has good photocatalytic properties and produces a large number of free radicals. These free radicals have strong oxidizing properties and can react with bacteria to achieve an antibacterial effect. They can also release silver ions, which can destroy the normal metabolic function of bacteria and hinder the reproduction of microorganisms. They can also react with functional groups such as thiol and amine groups on proteins, enzymes and nucleic acids in bacteria, thereby affecting physiological functions and ultimately achieving excellent antibacterial and antibacterial effects. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] This embodiment is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0035] Step S1: 22 mmol imidazole, 25 mmol potassium hydroxide and 30 mL dimethyl sulfoxide are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 1 hour, and then 10 mmol 1,4-dichlorobutane is added and the temperature is raised to 45° C. and the stirring reaction is continued for 10 hours. After the reaction is completed, the reaction product is cooled to room temperature, and then added to ice water, and then vacuum filtered. The filter cake is washed with distilled water for 3 times, and then placed in a vacuum drying oven and dried at a temperature of 40° C. for 2 hours to obtain a bisimidazole alkane;

[0036] Step S2: 10 mmol of bisimidazolidinone, 20 mmol of chloropropylmethyldimethoxysilane and 40 mL of anhydrous acetonitrile were added to a three-necked flask equipped with a stirrer, a thermometer, a gas guide tube and a reflux condenser, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 10 min, and then the temperature was raised to reflux and the stirring reaction was continued for 20 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain imidazolidinone cationic siloxane;

[0037] Step S3: 40 mmol octamethylcyclotetrasiloxane, 12 mmol imidazolium cationic siloxane, 10 mmol tetramethylcyclotetrasiloxane and 10 mmol tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 20 min, and then the mixture is heated to 45° C. and the stirring reaction is continued for 20 min. Then, 0.4 g of 98% concentrated sulfuric acid is added and the mixture is heated to 60° C. and the stirring reaction is continued for 5 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the pH value is adjusted to 7 with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a hydrogen-containing cationic polysiloxane;

[0038] Step S4: 10 g of hydrogen-containing cationic polysiloxane, 1.1 g of allyl glycidyl ether and 80 mL of anhydrous toluene are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred and reacted for 20 min at a temperature of 25° C. and a stirring rate of 300 r / min, and then the mixture is heated to 50° C. and the stirring reaction is continued for 20 min. Then, 5 mL of chloroplatinic acid is dissolved in isopropanol at a ratio of 1 g:45 mL and the chloroplatinic acid-isopropanol solution is added and the mixture is heated to 90° C. and the stirring reaction is continued for 3 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation to obtain a cationic epoxy polysiloxane;

[0039] Step S5: 3.5 mL of tetrabutyl titanate and 25 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred and reacted for 20 minutes at a temperature of 25° C. and a stirring rate of 300 r / min. Then, 0.1 g of silver nitrate, 1 mL of concentrated ammonia water with a mass fraction of 25% and 10 mL of anhydrous acetonitrile are added and the stirring reaction is continued for 20 minutes. Then, the mixture is heated to 60° C. and the stirring reaction is continued for 10 hours. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed three times with anhydrous ethanol and distilled water in sequence, and then placed in a vacuum drying oven and dried at a temperature of 60° C. for 3 hours to obtain silver ion-doped titanium dioxide;

[0040] Step S6: 5 g of silver ion-doped titanium dioxide, 1.2 g of γ-glycidyloxypropyltrimethoxysilane, 50 mL of anhydrous ethanol and 5 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 20 h. After the reaction was completed, the reaction product was centrifuged, and the precipitate was placed in a vacuum drying oven and dried at a temperature of 30° C. for 8 h to obtain modified silver ion-doped titanium dioxide;

[0041] Step S7: weigh 30 parts of cationic epoxy polysiloxane, 1.2 parts of modified silver ion-doped titanium dioxide, 4 parts of sodium thiosulfate, 3 parts of polyethylene wax, 1 part of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts, and set aside;

[0042] Step S8: Add cationic epoxy polysiloxane, modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 20 minutes at a temperature of 25° C. and a stirring rate of 600 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0043] Embodiment 2:

[0044] This embodiment is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0045] Step S1: 24 mmol imidazole, 28 mmol potassium hydroxide and 35 mL dimethyl sulfoxide are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred at a temperature of 28° C. and a stirring rate of 350 r / min for 1 hour, and then 10 mmol 1,4-dichlorobutane is added and the temperature is raised to 48° C. and the stirring reaction is continued for 12 hours. After the reaction is completed, the reaction product is cooled to room temperature, and then added to ice water, and then vacuum filtered. The filter cake is washed with distilled water 4 times, and then placed in a vacuum drying oven and dried at a temperature of 42° C. for 2.5 hours to obtain a bisimidazole alkane;

[0046] Step S2: 10 mmol of bisimidazolidinone, 20 mmol of chloropropylmethyldimethoxysilane and 45 mL of anhydrous acetonitrile were added to a three-necked flask equipped with a stirrer, a thermometer, a gas guide tube and a reflux condenser, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 12 min, and then the temperature was raised to reflux and the stirring reaction was continued for 22 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain imidazolidinone cationic siloxane;

[0047] Step S3: 45 mmol octamethylcyclotetrasiloxane, 15 mmol imidazolium cationic siloxane, 12 mmol tetramethylcyclotetrasiloxane and 12 mmol tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 25 min, and then the mixture is heated to 48° C. and the stirring reaction is continued for 25 min. Then, 0.6 g of 98% concentrated sulfuric acid is added and the mixture is heated to 62° C. and the stirring reaction is continued for 5.5 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the pH value is adjusted to 7 with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a hydrogen-containing cationic polysiloxane;

[0048] Step S4: 10 g of hydrogen-containing cationic polysiloxane, 1.9 g of allyl glycidyl ether and 90 mL of anhydrous toluene are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 25 min, and then the mixture is heated to 52° C. and the stirring reaction is continued for 25 min. Then, 8 mL of chloroplatinic acid is dissolved in isopropanol at a ratio of 1 g:48 mL and the stirring reaction is continued for 4 h under the condition of heating to 92° C. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation to obtain a cationic epoxy polysiloxane;

[0049] Step S5: 4 mL of tetrabutyl titanate and 28 mL of anhydrous ethanol were added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 25 min, and then 0.3 g of silver nitrate, 1.5 mL of concentrated ammonia water with a mass fraction of 25% and 11 mL of anhydrous acetonitrile were added and the mixture was stirred for reaction for 25 min. The mixture was heated to 62° C. and the mixture was stirred for reaction for 12 h. After the reaction was completed, the reaction product was cooled to room temperature and then centrifuged. The precipitate was washed with anhydrous ethanol and distilled water for 4 times in sequence, and then placed in a vacuum drying oven and dried at a temperature of 62° C. for 4 h to obtain silver ion-doped titanium dioxide;

[0050] Step S6: 5 g of silver ion-doped titanium dioxide, 2.9 g of γ-glycidyloxypropyltrimethoxysilane, 55 mL of anhydrous ethanol and 7 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen was introduced for protection. The mixture was stirred at a temperature of 28° C. and a stirring rate of 350 r / min for 25 h. After the reaction was completed, the reaction product was centrifuged, and the precipitate was placed in a vacuum drying oven and dried at a temperature of 32° C. for 9 h to obtain modified silver ion-doped titanium dioxide;

[0051] Step S7: Weigh 45 parts of cationic epoxy polysiloxane, 4.8 parts of modified silver ion-doped titanium dioxide, 5 parts of sodium thiosulfate, 4 parts of polyethylene wax, 3 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts, and set aside;

[0052] Step S8: Add cationic epoxy polysiloxane, modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 25 minutes at a temperature of 28° C. and a stirring rate of 700 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0053] Embodiment 3:

[0054] This embodiment is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0055] Step S1: 25 mmol imidazole, 30 mmol potassium hydroxide and 40 mL dimethyl sulfoxide are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 1.5 hours, and then 10 mmol 1,4-dichlorobutane is added and the temperature is raised to 50° C. and the stirring reaction is continued for 15 hours. After the reaction is completed, the reaction product is cooled to room temperature, and then added to ice water, and then vacuum filtered. The filter cake is washed with distilled water for 5 times, and then placed in a vacuum drying oven and dried at a temperature of 45° C. for 3 hours to obtain a bisimidazole alkane;

[0056] Step S2: 10 mmol of bisimidazolidinone, 20 mmol of chloropropylmethyldimethoxysilane and 50 mL of anhydrous acetonitrile were added to a three-necked flask equipped with a stirrer, a thermometer, a gas guide tube and a reflux condenser, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 15 min, and then the temperature was raised to reflux and the stirring reaction was continued for 25 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain imidazolidinone cationic siloxane;

[0057] Step S3: 50 mmol octamethylcyclotetrasiloxane, 18 mmol imidazolium cationic siloxane, 15 mmol tetramethylcyclotetrasiloxane and 15 mmol tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the mixture is heated to 50° C. and the stirring reaction is continued for 30 min. Then, 0.8 g of 98% concentrated sulfuric acid is added and the mixture is heated to 65° C. and the stirring reaction is continued for 6 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the pH is adjusted to 7 with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a hydrogen-containing cationic polysiloxane;

[0058] Step S4: 10 g of hydrogen-containing cationic polysiloxane, 2.7 g of allyl glycidyl ether and 100 mL of anhydrous toluene are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the mixture is heated to 55° C. and the stirring reaction is continued for 30 min. Then, 10 mL of chloroplatinic acid is dissolved in isopropanol at a ratio of 1 g:50 mL and the chloroplatinic acid-isopropanol solution is added and the mixture is heated to 95° C. and the stirring reaction is continued for 5 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation to obtain a cationic epoxy polysiloxane;

[0059] Step S5: 4.5 mL of tetrabutyl titanate and 30 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred and reacted for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min. Then, 0.5 g of silver nitrate, 2 mL of concentrated ammonia water with a mass fraction of 25% and 12 mL of anhydrous acetonitrile are added and the stirring reaction is continued for 30 min. Then, the mixture is heated to 65° C. and the stirring reaction is continued for 15 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed with anhydrous ethanol and distilled water for 5 times in sequence, and then placed in a vacuum drying oven and dried at a temperature of 65° C. for 5 h to obtain silver ion-doped titanium dioxide;

[0060] Step S6: 5 g of silver ion-doped titanium dioxide, 5.6 g of γ-glycidyloxypropyltrimethoxysilane, 60 mL of anhydrous ethanol and 9 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 h. After the reaction was completed, the reaction product was centrifuged, and the precipitate was placed in a vacuum drying oven and dried at a temperature of 35° C. for 10 h to obtain modified silver ion-doped titanium dioxide;

[0061] Step S7: Weigh 60 parts of cationic epoxy polysiloxane, 8.4 parts of modified silver ion-doped titanium dioxide, 6 parts of sodium thiosulfate, 5 parts of polyethylene wax, 5 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts for later use;

[0062] Step S8: Add cationic epoxy polysiloxane, modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 30 minutes at a temperature of 30° C. and a stirring rate of 800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0063] Comparative Example 1:

[0064] This comparative example is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0065] Step S1: weigh 6 parts of sodium thiosulfate, 5 parts of polyethylene wax, 5 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts and set aside;

[0066] Step S2: Add sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 30 minutes at a temperature of 30° C. and a stirring rate of 800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0067] Comparative Example 2:

[0068] This comparative example is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0069] Step S1: 25 mmol imidazole, 30 mmol potassium hydroxide and 40 mL dimethyl sulfoxide are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 1.5 hours, and then 10 mmol 1,4-dichlorobutane is added and the temperature is raised to 50° C. and the stirring reaction is continued for 15 hours. After the reaction is completed, the reaction product is cooled to room temperature, and then added to ice water, and then vacuum filtered. The filter cake is washed with distilled water for 5 times, and then placed in a vacuum drying oven and dried at a temperature of 45° C. for 3 hours to obtain a bisimidazole alkane;

[0070] Step S2: 10 mmol of bisimidazolidinone, 20 mmol of chloropropylmethyldimethoxysilane and 50 mL of anhydrous acetonitrile were added to a three-necked flask equipped with a stirrer, a thermometer, a gas guide tube and a reflux condenser, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 15 min, and then the temperature was raised to reflux and the stirring reaction was continued for 25 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain imidazolidinone cationic siloxane;

[0071] Step S3: 50 mmol octamethylcyclotetrasiloxane, 18 mmol imidazolium cationic siloxane, 15 mmol tetramethylcyclotetrasiloxane and 15 mmol tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the mixture is heated to 50° C. and the stirring reaction is continued for 30 min. Then, 0.8 g of 98% concentrated sulfuric acid is added and the mixture is heated to 65° C. and the stirring reaction is continued for 6 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the pH is adjusted to 7 with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a hydrogen-containing cationic polysiloxane;

[0072] Step S4: 10 g of hydrogen-containing cationic polysiloxane, 2.7 g of allyl glycidyl ether and 100 mL of anhydrous toluene are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the mixture is heated to 55° C. and the stirring reaction is continued for 30 min. Then, 10 mL of chloroplatinic acid is dissolved in isopropanol at a ratio of 1 g:50 mL and the chloroplatinic acid-isopropanol solution is added and the mixture is heated to 95° C. and the stirring reaction is continued for 5 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation to obtain a cationic epoxy polysiloxane;

[0073] Step S5: weigh 60 parts of cationic epoxy polysiloxane, 6 parts of sodium thiosulfate, 5 parts of polyethylene wax, 5 parts of sodium lauryl sulfate and 1000 parts of deionized water according to weight parts, and set aside;

[0074] Step S6: Add cationic epoxy polysiloxane, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 30 minutes at a temperature of 30° C. and a stirring rate of 800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0075] Comparative Example 3:

[0076] This comparative example is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0077] Step S1: 4.5 mL of tetrabutyl titanate and 30 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred and reacted for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min. Then, 0.5 g of silver nitrate, 2 mL of concentrated ammonia water with a mass fraction of 25% and 12 mL of anhydrous acetonitrile are added and the stirring reaction is continued for 30 min. Then, the mixture is heated to 65° C. and the stirring reaction is continued for 15 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed with anhydrous ethanol and distilled water for 5 times in sequence, and then placed in a vacuum drying oven and dried at a temperature of 65° C. for 5 h to obtain silver ion-doped titanium dioxide;

[0078] Step S2: 5 g of silver ion-doped titanium dioxide, 5.6 g of γ-glycidyloxypropyltrimethoxysilane, 60 mL of anhydrous ethanol and 9 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 h. After the reaction was completed, the reaction product was centrifuged, and the precipitate was placed in a vacuum drying oven and dried at a temperature of 35° C. for 10 h to obtain modified silver ion-doped titanium dioxide;

[0079] Step S3: weigh 8.4 parts of modified silver ion-doped titanium dioxide, 6 parts of sodium thiosulfate, 5 parts of polyethylene wax, 5 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts for later use;

[0080] Step S4: Add modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 30 minutes at a temperature of 30° C. and a stirring rate of 800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0081] Comparative Example 4:

[0082] This comparative example is a method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, comprising the following steps:

[0083] Step S1: 50 mmol octamethylcyclotetrasiloxane, 15 mmol tetramethylcyclotetrasiloxane and 15 mmol tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the mixture is heated to 50° C. and the stirring reaction is continued for 30 min. Then, 0.8 g of 98% concentrated sulfuric acid is added and the mixture is heated to 65° C. and the stirring reaction is continued for 6 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the pH value is adjusted to 7 with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain hydrogen-containing polysiloxane;

[0084] Step S2: 10 g of hydrogen-containing polysiloxane, 2.7 g of allyl glycidyl ether and 100 mL of anhydrous toluene are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the mixture is heated to 55° C. and the stirring reaction is continued for 30 min. Then, 10 mL of chloroplatinic acid is dissolved in isopropanol at a ratio of 1 g:50 mL and the chloroplatinic acid-isopropanol solution is added and the mixture is heated to 95° C. and the stirring reaction is continued for 5 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation to obtain epoxy polysiloxane;

[0085] Step S3: 4.5 mL of tetrabutyl titanate and 30 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred and reacted for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min. Then, 2 mL of 25% concentrated ammonia water and 12 mL of anhydrous acetonitrile are added and stirred and reacted for 30 min. Then, the mixture is heated to 65° C. and stirred and reacted for 15 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed with anhydrous ethanol and distilled water for 5 times in sequence, and then placed in a vacuum drying oven and dried at 65° C. for 5 h to obtain titanium dioxide.

[0086] Step S4: 5 g of titanium dioxide, 5.6 g of γ-glycidyloxypropyltrimethoxysilane, 60 mL of anhydrous ethanol and 9 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen was introduced for protection. The mixture was stirred at a temperature of 30° C. and a stirring rate of 400 r / min for 30 h. After the reaction was completed, the reaction product was centrifuged, and the precipitate was placed in a vacuum drying oven and dried at a temperature of 35° C. for 10 h to obtain modified titanium dioxide;

[0087] Step S5: weigh 60 parts of epoxy polysiloxane, 8.4 parts of modified titanium dioxide, 6 parts of sodium thiosulfate, 5 parts of polyethylene wax, 5 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts, and set aside;

[0088] Step S6: Add epoxy polysiloxane, modified titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 30 minutes at a temperature of 30° C. and a stirring rate of 800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

[0089] Performance Testing

[0090] The cotton fabric was immersed in the anti-wrinkle and antibacterial finishing agent for fabrics of Examples 1-3 and Comparative Examples 1-4 at a bath ratio of 1:40 for 30 minutes, and then subjected to a double-immersion and double-rolling immersion and rolling process with a rolling rate of 70%, and then pre-dried at 90°C for 3 minutes, and then baked at 140°C for 1 minute, and then cooled to room temperature to obtain a sample to be tested.

[0091] The wrinkle recovery angle of the sample to be tested is measured according to GB / T3819-1997 "Determination of Crease Recovery of Textile Fabrics" to achieve wrinkle resistance evaluation;

[0092] The antibacterial rate of the samples to be tested was tested according to GB / T 20944.3-2008 "Determination of antibacterial properties of textiles Part 3: Oscillation method" to achieve antibacterial performance evaluation.

[0093]

[0094] Referring to the data in the above table, based on the comparison between Examples 1-3 and Comparative Examples 1-4, it can be seen that after the fabric of the present application is treated with the anti-wrinkle and antibacterial finishing agent, the anti-wrinkle and antibacterial properties of the fabric can be significantly improved.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0096] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined in this application, they shall all fall within the protection scope of the present invention.

Claims

1. An anti-wrinkle and antibacterial finishing agent for fabrics, characterized in that: It comprises the following components in parts by weight: 30-60 parts of cationic epoxy polysiloxane, 1.2-8.4 parts of modified silver ion-doped titanium dioxide, 4-6 parts of sodium thiosulfate, 3-5 parts of polyethylene wax, 1-5 parts of sodium lauryl sulfate and 1000 parts of deionized water; Wherein, the cationic epoxy polysiloxane is prepared by the following steps: Step a1: stirring imidazole, potassium hydroxide and dimethyl sulfoxide for reaction, then adding 1,4-dichlorobutane and continuing stirring for reaction, cooling the reaction product after the reaction is completed, then adding it into ice water, then vacuum filtering, washing and drying the filter cake to obtain bisimidazolidinone; Step a2: stirring and reacting bisimidazole alkane, chloropropylmethyldimethoxysilane and anhydrous acetonitrile, cooling the reaction product after the reaction is completed, and then rotary evaporating to obtain imidazolium cationic siloxane; Step a3: octamethylcyclotetrasiloxane, imidazolium cationic siloxane, tetramethylcyclotetrasiloxane and tetramethyldisiloxane are stirred for reaction, and then concentrated sulfuric acid is added to continue stirring for reaction. After the reaction is completed, the reaction product is cooled, and then the pH is adjusted with a saturated sodium bicarbonate solution, and then vacuum filtered, and the filtrate is rotary evaporated to obtain a hydrogen-containing cationic polysiloxane; Step a4: Stirring the hydrogen-containing cationic polysiloxane, allyl glycidyl ether and anhydrous toluene for reaction, then adding chloroplatinic acid-isopropanol solution and continuing stirring for reaction, cooling the reaction product after the reaction is completed, and then rotary evaporating to obtain cationic epoxy polysiloxane.

2. The anti-wrinkle and antibacterial finishing agent for fabrics according to claim 1, characterized in that: The usage ratio of the imidazole, potassium hydroxide, dimethyl sulfoxide and 1,4-dichlorobutane in step a1 is 22-25 mmol: 25-30 mmol: 30-40 mL: 10 mmol.

3. The anti-wrinkle and antibacterial finishing agent for fabric according to claim 1, characterized in that: The dosage ratio of the bisimidazolidinone, chloropropylmethyldimethoxysilane and anhydrous acetonitrile in step a2 is 10 mmol: 20 mmol: 40-50 mL.

4. The anti-wrinkle and antibacterial finishing agent for fabric according to claim 1, characterized in that: The usage ratio of the octamethylcyclotetrasiloxane, imidazolium cationic siloxane, tetramethylcyclotetrasiloxane, tetramethyldisiloxane and concentrated sulfuric acid in step a3 is 40-50mmol:12-18mmol:10-15mmol:10-15mmol:0.4-0.8g; the mass fraction of the concentrated sulfuric acid is 98%.

5. The anti-wrinkle and antibacterial finishing agent for fabric according to claim 1, characterized in that: The amount ratio of the hydrogen-containing cationic polysiloxane, allyl glycidyl ether, anhydrous toluene and chloroplatinic acid-isopropanol solution in step a4 is 10g:1.1-2.7g:80-100mL:5-10mL; the chloroplatinic acid-isopropanol solution is a solution formed by dissolving chloroplatinic acid in isopropanol at a ratio of 1g:45-50mL.

6. The anti-wrinkle and antibacterial finishing agent for fabric according to claim 1, characterized in that: The modified silver ion-doped titanium dioxide is prepared by the following steps: Step b1: Tetrabutyl titanate and anhydrous ethanol are stirred for reaction, and then silver nitrate, concentrated ammonia water and anhydrous acetonitrile are added and stirred for reaction. After the reaction is completed, the reaction product is cooled, centrifuged, and the precipitate is washed and dried to obtain silver ion-doped titanium dioxide; Step b2: stirring and reacting silver ion-doped titanium dioxide, γ-glycidyloxypropyltrimethoxysilane, anhydrous ethanol and deionized water; after the reaction, centrifuging the reaction product and drying the precipitate to obtain modified silver ion-doped titanium dioxide.

7. The anti-wrinkle and antibacterial finishing agent for fabric according to claim 6, characterized in that: The dosage ratio of the tetrabutyl titanate, anhydrous ethanol, silver nitrate, concentrated aqueous ammonia and anhydrous acetonitrile in step b1 is 3.5-4.5 mL: 25-30 mL: 0.1-0.5 g: 1-2 mL: 10-12 mL; the mass fraction of the concentrated aqueous ammonia is 25%.

8. The anti-wrinkle and antibacterial finishing agent for fabric according to claim 6, characterized in that: The amount ratio of the silver ion-doped titanium dioxide, γ-glycidyloxypropyltrimethoxysilane, anhydrous ethanol and deionized water in step b2 is 5g:1.2-5.6g:50-60mL:5-9mL.

9. A method for preparing an anti-wrinkle and antibacterial finishing agent for fabrics, characterized in that: The following steps are involved: Step 1: Weigh 30-60 parts of cationic epoxy polysiloxane, 1.2-8.4 parts of modified silver ion-doped titanium dioxide, 4-6 parts of sodium thiosulfate, 3-5 parts of polyethylene wax, 1-5 parts of sodium dodecyl sulfate and 1000 parts of deionized water according to weight parts, and set aside; Step 2: Add cationic epoxy polysiloxane, modified silver ion-doped titanium dioxide, sodium thiosulfate, polyethylene wax, sodium dodecyl sulfate and deionized water into a mixer, stir and mix for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 600-800 r / min to obtain an anti-wrinkle and antibacterial finishing agent for fabrics.

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