Surface modification method of fiber fabric

Abstract

The invention relates to a surface modification method of a fiber fabric, and belongs to the field of textile dyeing and finishing. The invention relates to a surface modification method of a fiber fabric, which comprises the following process steps: fully dispersing inorganic oxide nanoparticles, a siloxane-based surface modifier and a surfactant in a water phase, reacting for a period of time, cooling, and adjusting the pH value to 8.0-12.0 to obtain an alkaline reaction solution containing nanoparticles of which the surfaces are coated with the siloxane-based surface modifier; the method comprises the following steps: fully infiltrating a fiber fabric in an alkaline reaction solution to form a nano-structure surface modification layer with a certain thickness on the surface of the fiber fabric, and then carrying out high-temperature curing; the fiber fabric subjected to high-temperature curing treatment is immediately placed at the room temperature, and the fiber fabric with the micro-nano structure folds on the surface is obtained. According to the invention, through the construction of the three-dimensional micro-nano structure functional layer on the fiber surface, the physical morphology and capillary action of the wrinkle peak valley structure are utilized to slow down the loss of the functional auxiliary agent due to water washing.

Description

Technical Field

[0001] The invention relates to a surface modification method for fiber fabrics and belongs to the field of textile dyeing and finishing. Background Art

[0002] Functionalization of textiles has become a key development direction in the dyeing and finishing industry. However, due to their stable molecular structure and strong chemical inertness, synthetic fibers with high chemical stability are difficult to functionalize through group introduction. Achieving long-lasting and effective UV protection for textiles has become a key technical challenge urgently needed in the dyeing and finishing industry. Therefore, developing new functionalization modification technologies for chemically stable fibers has important theoretical and practical implications for expanding the application areas of functional textiles and increasing product added value.

[0003] The hole in the ozone layer has significantly increased the intensity of UV radiation at the surface, leading to a continued rise in the incidence of skin cancer and other diseases. Therefore, improving the UV protection of textiles has become a key research topic in the field of functional textiles. Since the photostability of a fabric is a key indicator of its market competitiveness, finishing processes are often required to improve the light resistance of textiles with poor sunlight fastness. UV absorbers not only significantly enhance the UV protection of textiles but also effectively improve the light fastness of dyed fabrics. For highly chemically stable fibers, due to the high bond breakage energy in their molecular structure, the industry currently primarily uses coating and high-temperature dispersion treatments for functionalization. Coating significantly reduces the fabric's softness, breathability, and other wear properties. Therefore, high-temperature dispersion is more common. However, the UV absorber relies solely on van der Waals forces to bond to the fiber, leading to issues such as easy washout and poor durability. Not only does this method fail to maintain long-term UV protection, but the easy migration of the additives also poses potential risks to human health and the environment. Summary of the Invention

[0004] The present invention provides a method for surface modification of fiber fabrics. Specifically, it provides a method for surface modification of functional additives on fabrics to improve their washability, thereby solving the problem of functional additives being easily lost from fibers due to washing. The surface modification method of fiber fabrics comprises the following process steps:

[0005] S1, fully dispersing inorganic oxide nanoparticles, a siloxane-based surface modifier, and a surfactant in an aqueous phase, reacting at 40-85°C for a period of time, reducing the temperature to 0-25°C, adjusting the pH to 8.0-12.0, and further reacting for a period of time to obtain an alkaline reaction solution containing nanoparticles coated with a siloxane-based surface modifier;

[0006] S2, fully soaking the fiber fabric in an alkaline reaction solution to form a nanostructured surface modification layer of a certain thickness on the surface of the fiber fabric, and then performing high-temperature curing; immediately placing the fiber fabric that has been subjected to high-temperature curing at room temperature to obtain a fiber fabric with micro-nanostructured wrinkles on the surface, wherein the fiber fabric is polyester, cationic dyeable polyester, polytetrafluoroethylene, polyimide, polyaramid, or polyvinyl chloride fiber fabric.

[0007] In the above technical solution, the inorganic oxide nanoparticles are one or more of ZnO, SiO2, and TiO2.

[0008] In the above technical solution, the siloxane-based surface modifier is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, 3-aminopropyltriethoxysilane, hexadecyltrimethoxysilane, 3-(2-aminoethyl)-aminopropylmethyldimethoxysilane, and polydimethylsiloxane.

[0009] Furthermore, the molar ratio of the siloxane-based surface modifier to the nanoparticles is 4:1 to 1:10.

[0010] In the above technical solution, the surfactant is one or more of sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, polyethylene glycol, hexadecyltrimethylammonium bromide, and polyacrylic acid.

[0011] Furthermore, the amount of sodium lauryl sulfate is 0.1 to 0.5 wt% of the weight of the inorganic oxide nanoparticles; the amount of sodium dodecylbenzenesulfonate is 0.05 to 0.5 wt% of the weight of the inorganic oxide nanoparticles; the amount of polyethylene glycol is 1 to 5 wt% of the weight of the inorganic oxide nanoparticles; the amount of hexadecyltrimethylammonium bromide is 0.05 to 0.3 wt% of the weight of the inorganic oxide nanoparticles; and the amount of polyacrylic acid is 5 to 20% of the weight of the inorganic oxide nanoparticles.

[0012] In the above technical solution, in step S1, the inorganic oxide nanoparticles, the siloxane-based surface modifier, and the surfactant are fully dispersed in the aqueous phase by ultrasonic treatment, reacted at 40-85°C for 2-6 hours, then cooled to 0-25°C, and the pH is adjusted to 8-12, and then reacted for another 2-6 hours.

[0013] In the above technical solution, the fiber fabric is fully immersed in the alkaline reaction solution at room temperature for 20 to 80 minutes, with a bath ratio of 1:20 to 1:50. The self-assembly time of the nanoparticles on the fabric surface is controlled by the immersion time.

[0014] In the above technical solution, the high temperature curing treatment temperature is 20-50° C. higher than the glass transition temperature of the treated fabric, and the curing time is 5-15 minutes.

[0015] In the above technical solution, the pH of the system is adjusted to 8.0-12.0 using ammonia water, sodium hydroxide, potassium hydroxide or triethylamine.

[0016] Furthermore, the concentration of ammonia water is 0.1-2.0 mol / L; the concentration of sodium hydroxide or potassium hydroxide is 0.01-0.5 mol / L; and the concentration of triethylamine is 0.05-0.3 mol / L.

[0017] Another object of the present invention is to provide a method for preparing functional fiber fabric using the fiber fabric having micro-nanostructure wrinkles on the surface.

[0018] A method for preparing a functional fiber fabric comprises the following steps: fully soaking a fiber fabric having micro-nanostructured wrinkles on its surface in a dispersion containing a water-insoluble functional additive, then removing excess functional additives and performing high-temperature curing, washing with water, soaping, washing with water, and drying.

[0019] Preferably, the concentration of the dispersion of the water-insoluble functional additive is 0.1 to 10 g / L.

[0020] Preferably, the fiber fabric having micro-nanostructure wrinkles on its surface is fully immersed in a dispersion containing a water-insoluble functional additive for 20 to 80 minutes.

[0021] Preferably, the functional additives are ultraviolet absorbers, antibacterial agents, and flame retardants.

[0022] Furthermore, the ultraviolet absorber is one or more of 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octyloxybenzophenone, 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid, 2,2'-dihydroxy-4-methoxybenzophenone, 2-cyano-3,3-diphenylacrylate-2-ethylhexyl ester, [4-(2-ethylhexyloxy)-2-hydroxyphenyl]-phenyl ketone, 2-(2H-benzotriazole-2-yl)-4,6-bis(2-methyl-2-butyl)phenol, 2-(2H-benzotriazole-2-yl)-4,6-di-tert-butylphenol, and 2-(2H-benzotriazole-2-yl)-4-methylphenol.

[0023] Preferably, the surfactant used to disperse the ultraviolet absorber is one or more of polyvinyl pyrrolidone, dispersant NNO, cetyltrimethylammonium bromide, polyoxyethylene octylphenol ether, polysorbate, cocamidopropyl betaine, and dodecyldimethylamine oxide, and the amount thereof is 1 to 10 wt %; the solvent used to disperse the ultraviolet absorber is one or more of n-hexane, n-heptane, n-octane, cyclohexane, petroleum ether, and ethyl acetate.

[0024] Preferably, the high temperature curing temperature is 80-150° C., and the curing time is 5-15 minutes.

[0025] The present invention has the following beneficial effects: by constructing a three-dimensional micro-nanostructured functional layer on the fiber surface, the present invention utilizes the physical morphology of the wrinkled peak-valley structure and capillary action to mitigate the loss of functional additives during washing. For example, using UV absorbers, the present method can address the issue of short-term improvement in UV shielding and light fastness of low-reactivity fabrics. Fabrics treated with this method and treated with UV absorbers exhibited UV absorption spectra that remained nearly identical to the initial spectrum after 50 cycles of the AATCC 61-2013 standard soap washing test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The UV transmittance spectra of the fabrics treated with different functions obtained in Example 1 are shown.

[0027] Figure 2 The UV transmittance spectra of the functionally treated fabric obtained in Example 1 after different standard soap washing cycles.

[0028] Figure 3 This is an electron microscope photograph of the fabric in Example 1 without any treatment.

[0029] Figure 4 This is an electron microscope photograph of the fully covered wrinkled fabric obtained in Example 1.

[0030] Figure 5 This is an electron microscope photograph of the fabric obtained in Example 1, in which the wrinkle morphology and the ultraviolet absorber layer are assembled in sequence. DETAILED DESCRIPTION

[0031] The following non-limiting examples may enable those skilled in the art to more fully understand the present invention, but are not intended to limit the present invention in any way.

[0032] Unless otherwise specified, the experimental methods described in the following examples are conventional methods; the reagents and materials described are all commercially available unless otherwise specified.

[0033] Taking the functional auxiliary agent as an ultraviolet absorber as an example, a preferred embodiment of the present invention is provided.

[0034] This method increases the fiber's specific surface area by creating a fully encapsulated micro-nanoscale wrinkled morphology on the fiber surface, creating a characteristic peak-valley structure. The valleys provide deposition sites for the UV absorber, significantly reducing its loss during washing through capillary action and improving its long-lasting effect on highly chemically stable fabrics.

[0035] A method for preparing a functional fiber fabric using a fiber fabric having micro-nanostructured wrinkles on its surface comprises the following steps:

[0036] S1. Fully dispersing inorganic oxide nanoparticles, a siloxane-based surface modifier, and a surfactant in an aqueous phase by ultrasonic treatment, reacting at 40-85° C. for a period of time, then reducing the temperature to 0-25° C. and adjusting the pH to 8.0-12.0, and further reacting for a period of time to obtain an alkaline reaction solution containing nanoparticles coated with a siloxane-based surface modifier;

[0037] S2. Ultrasonic infiltration of the fiber fabric in the alkaline reaction solution obtained in S1 is performed, and a surface modification layer of appropriate thickness is grown on the fiber surface by regulating the self-assembly time. Excess additives are then rolled out using a padding machine, and the fiber fabric is cured at high temperature for 5 to 15 minutes. The functional fabric cured at high temperature is immediately placed at room temperature to obtain a fiber fabric having micro-nanostructured wrinkles on the surface.

[0038] S3. The fabric obtained in step S2 is fully soaked in the ultraviolet absorber dispersion emulsion, and then the excess auxiliary agent is rolled out with a padding machine, and high-temperature curing is performed, and then washed with water, soaped, washed with water, and dried.

[0039] In the above technical solution, in step S1, the nanoparticles are one or more of ZnO, SiO2, and TiO2.

[0040] In the above technical solution, in step S1, the siloxane-based surface modifier is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, 3-aminopropyltriethoxysilane, hexadecyltrimethoxysilane, 3-(2-aminoethyl)-aminopropylmethyldimethoxysilane, and polydimethylsiloxane.

[0041] In the above technical solution, in step S1, one or more of sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, polyethylene glycol, hexadecyltrimethylammonium bromide, and polyacrylic acid are used.

[0042] The auxiliary agent of the present invention is selected from one or more of the above auxiliary agents. When multiple auxiliary agents are selected, the ratio of each auxiliary agent can be any ratio as long as the total amount of the auxiliary agent meets the demand.

[0043] In the above technical solution, in step S1, the molar ratio of siloxane to nanoparticles is 4:1 to 1:10.

[0044] In the above technical solution, the fabric in step S2 is one or more of polyester, cationic dyeable polyester, polytetrafluoroethylene, polyimide, polyaramid, and polyvinyl chloride, which have high chemical stability.

[0045] In the above technical solution, the standing time in step S2 is 20 to 80 minutes, and the bath ratio is 1:20 to 1:50.

[0046] In the above technical solution, the curing temperature in step S2 is 20 to 50° C. higher than the glass transition temperature of the treated fabric, and the curing time is 5 to 15 minutes.

[0047] In the above technical solution, the ultraviolet absorber in the ultraviolet absorber dispersion in step S3 is one or more of 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octyloxybenzophenone, 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid, 2,2'-dihydroxy-4-methoxybenzophenone, 2-cyano-3,3-diphenylacrylate-2-ethylhexyl ester, [4-(2-ethylhexyloxy)-2-hydroxyphenyl]-phenyl ketone, 2-(2H-benzotriazole-2-yl)-4,6-bis(2-methyl-2-butyl)phenol, 2-(2H-benzotriazole-2-yl)-4,6-di-tert-butylphenol, and 2-(2H-benzotriazole-2-yl)-4-methylphenol, and the amount is 0.1-10 g / L.

[0048] In the above technical solution, in step S3, the surfactant used to disperse the ultraviolet absorber is one or more of polyvinyl pyrrolidone, dispersant NNO, cetyltrimethylammonium bromide, polyoxyethylene octylphenol ether, polysorbate, cocamidopropyl betaine, and dodecyldimethylamine oxide.

[0049] In the above technical solution, in step S3, the solvent used to disperse the ultraviolet absorber is one or more of n-hexane, n-heptane, n-octane, cyclohexane, petroleum ether, and ethyl acetate.

[0050] In the above technical solution, in step S3, the soap washing is performed by using standard soap flakes to prepare a soap solution with a mass fraction of 2‰.

[0051] The average particle size of the nano ZnO particles used in the following examples is 20 to 60 nm; the average particle size of the nano TiO2 particles is 30 to 60 nm; and the average particle size of the nano SiO2 particles is 30 to 60 nm.

[0052] Example 1

[0053] 0.1 g of nano-ZnO particles, 0.3635 g of vinyltrimethoxysilane, and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment. The system was heated to 65°C and reacted for 4 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h.

[0054] 5.0 g of cationic dyeable polyester fabric was ultrasonically infiltrated in the alkaline reaction solution obtained above for 15 minutes, allowed to stand for 40 minutes to allow ZnO@POSS to fully adsorb and deposit on the fiber surface, and then rolled out with a padding machine to remove excess additives. The fabric was then cured at 100°C for 10 minutes and then quickly placed in a room temperature environment.

[0055] Cationic dyeable polyester fabric was thoroughly soaked in a UV absorber dispersion (UV-9) and then padded to remove excess additive. The fabric was then cured at 100°C for 10 minutes. The fabric was then washed, soaped, and air-dried. After 50 soaping cycles, the UV-9 loss on the fabric was 18.85%.

[0056] Comparative Example 1

[0057] Cationic dyeable polyester fibers were thoroughly soaked in a UV absorber dispersion (UV-9) and then padded to remove excess additive. The fibers were then cured at 100°C for 10 minutes. The fibers were then washed, soaped, and air-dried. After 50 soaping cycles, the UV-9 loss on the fabric was 44.28%.

[0058] Example 2

[0059] 0.1 g of nano-TiO2 particles, 0.3635 g of vinyltrimethoxysilane and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment, and the system was heated to 65 ° C and reacted for 4 h. After the system was cooled to 25 ° C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h;

[0060] 5.0 g of cationic dyeable polyester fiber was ultrasonically infiltrated in the alkaline reaction solution obtained above for 15 minutes, and then allowed to stand for 40 minutes to allow TiO2@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fiber was cured at 100°C for 10 minutes before being quickly placed in a room temperature environment.

[0061] The fabric was fully soaked in the ultraviolet absorber dispersion (UV-9) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 10 minutes, then washed with water, soaped, washed with water, and dried.

[0062] Example 3

[0063] 0.1 g of nano-SiO2 particles, 0.1815 g of vinyltrimethoxysilane and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment, and the system was heated to 65 ° C and reacted for 4 h. After the system was cooled to 25 ° C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h;

[0064] 5.0 g of cationic dyeable polyester fiber was ultrasonically infiltrated in the alkaline reaction solution obtained above for 15 minutes, and then allowed to stand for 40 minutes to allow SiO2@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fiber was cured at 100°C for 10 minutes before being quickly placed in a room temperature environment.

[0065] The above fabric was fully soaked in ultraviolet absorber dispersion (UV-9) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 10 minutes, and then washed with water, soaped, washed with water, and dried.

[0066] Example 4

[0067] 0.1 g of nano-ZnO particles and 0.3635 g of 3-aminopropyltriethoxysilane were fully dispersed in 180 mL of anhydrous ethanol / water (8 / 92, v / v) by ultrasonic treatment. The system was heated to 75°C and reacted for 2 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 2 h.

[0068] 5.0 g of cationic dyeable polyester fiber was ultrasonically infiltrated in the obtained alkaline reaction solution for 15 minutes, and then allowed to stand for 40 minutes to allow ZnO@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fiber was cured at 100°C for 10 minutes before being quickly placed in a room temperature environment.

[0069] The above fabric was fully soaked in ultraviolet absorber dispersion (UV-9) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 10 minutes, and then washed with water, soaped, washed with water, and dried.

[0070] Example 5

[0071] 0.1 g of nano-ZnO particles and 0.3635 g of hexadecyltrimethoxysilane were fully dispersed in 100 mL of anhydrous ethanol by ultrasonic treatment, and the system was heated to 80°C and reacted for 4 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 2 h.

[0072] 5.0 g of cationic dyeable polyester fiber was ultrasonically infiltrated in the obtained alkaline reaction solution for 15 minutes, and then allowed to stand for 40 minutes to allow ZnO@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fiber was cured at 100°C for 10 minutes before being quickly placed in a room temperature environment.

[0073] The fabric was fully soaked in the ultraviolet absorber dispersion (UV-9) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 10 minutes, then washed with water, soaped, washed with water, and dried.

[0074] Example 6

[0075] 0.1 g of nano-ZnO particles, 0.3635 g of vinyltrimethoxysilane, and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment. The system was heated to 65°C and reacted for 4 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h.

[0076] 5.0 g of polyester fabric was ultrasonically soaked in the obtained alkaline reaction solution for 15 min, and then allowed to stand for 40 min to allow ZnO@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fabric was cured at 150°C for 10 min, and then quickly placed in a room temperature environment.

[0077] The fabric was fully soaked in the ultraviolet absorber dispersion (UV-9) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 15 minutes, then washed with water, soaped, washed with water, and dried.

[0078] Example 7

[0079] 0.1 g of nano-ZnO particles, 0.3635 g of vinyltrimethoxysilane, and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment. The system was heated to 65°C and reacted for 4 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h.

[0080] 5.0 g of polytetrafluoroethylene fabric was ultrasonically soaked in the obtained alkaline reaction solution for 15 minutes, and then allowed to stand for 40 minutes to allow ZnO@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fabric was cured at 100°C for 10 minutes before being quickly placed in a room temperature environment.

[0081] The fabric was fully soaked in the ultraviolet absorber dispersion (UV-9) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 15 minutes, then washed with water, soaped, washed with water, and dried.

[0082] Example 8

[0083] 0.1 g of nano-ZnO particles, 0.3635 g of vinyltrimethoxysilane, and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment. The system was heated to 65°C and reacted for 4 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h.

[0084] 5.0 g of cationic dyeable polyester fabric was ultrasonically infiltrated in the obtained alkaline reaction solution for 15 minutes, and then allowed to stand for 40 minutes to allow ZnO@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fabric was cured at 100°C for 10 minutes before being quickly placed in a room temperature environment.

[0085] The fabric was fully soaked in the ultraviolet absorber dispersion (UV-360) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 10 minutes, then washed with water, soaped, washed with water, and dried.

[0086] Example 9

[0087] 0.1 g of nano-ZnO particles, 0.3635 g of vinyltrimethoxysilane, and 0.04 g of sodium dodecylsulfonate were fully dispersed in 180 mL of aqueous phase by ultrasonic treatment. The system was heated to 65°C and reacted for 4 h. After the system was cooled to 25°C, 20 mL of 10 g / L ammonia solution was added and reacted for 4 h.

[0088] 5.0 g of polyester fiber was ultrasonically infiltrated in the obtained alkaline reaction solution for 15 min, and then allowed to stand for 40 min to allow ZnO@POSS to fully adsorb and deposit on the fiber surface. The excess additive was then rolled out using a padding machine, and the fiber was cured at 150°C for 10 min, and then quickly placed in a low-temperature environment.

[0089] The fabric was fully soaked in the ultraviolet absorber dispersion (UV-531L) and then rolled out with a padding machine to remove excess additives, and cured at 100°C for 15 minutes, then washed with water, soaped, washed with water, and dried.

Claims

1. A surface modification method for fiber fabrics, characterized in that: The process includes the following steps: S1, fully dispersing inorganic oxide nanoparticles, a siloxane-based surface modifier, and a surfactant in an aqueous phase, reacting at 40-85°C for a period of time, reducing the temperature to 0-25°C, and adjusting the pH to 8.0-12.0 to obtain an alkaline reaction solution containing nanoparticles coated with a siloxane-based surface modifier; S2, fully soaking the fiber fabric in an alkaline reaction solution to form a nanostructured surface modification layer of a certain thickness on the surface of the fiber fabric, and then performing high-temperature curing; The fiber fabric cured at high temperature is immediately placed at room temperature to obtain a fiber fabric with micro-nanostructure wrinkles on the surface, wherein the fiber fabric is polyester, cationic dyeable polyester, polytetrafluoroethylene, polyimide, polyaramid, or polyvinyl chloride fiber fabric.

2. The method according to claim 1, characterized in that The inorganic oxide nanoparticles are one or more of ZnO, SiO2, and TiO2; the siloxane-based surface modifier is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, 3-aminopropyltriethoxysilane, hexadecyltrimethoxysilane, 3-(2-aminoethyl)-aminopropylmethyldimethoxysilane, and polydimethylsiloxane; the surfactant is one or more of sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, polyethylene glycol, hexadecyltrimethylammonium bromide, and polyacrylic acid; and the molar ratio of the siloxane-based surface modifier to the nanoparticles is 4:1 to 1:

10.

3. The method according to claim 1, characterized in that At room temperature, the fiber fabric is fully soaked in the alkaline reaction solution for 20 to 80 minutes with a bath ratio of 1:20 to 1:

50.

4. The method according to claim 1, wherein The high-temperature curing treatment temperature is 20 to 50° C. higher than the glass transition temperature of the treated fabric, and the curing time is 5 to 15 minutes.

5. The method according to claim 1, wherein The pH of the system is adjusted to 8.0-12.0 using ammonia water, sodium hydroxide, potassium hydroxide or triethylamine.

6. A method for preparing a functional fiber fabric, characterized in that: The fiber fabric with micro-nanostructured wrinkles on the surface prepared by the method according to any one of claims 1 to 5 is fully soaked in a dispersion containing a non-water-soluble functional additive, and then the excess functional additive is removed and high-temperature curing is performed, followed by water washing, soap washing, water washing, and drying.

7. The method according to claim 6, characterized in that The non-water-soluble functional additives are ultraviolet absorbers, antibacterial agents and flame retardants.

8. The method according to claim 7, characterized in that The ultraviolet absorber is one or more of 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octyloxybenzophenone, 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid, 2,2'-dihydroxy-4-methoxybenzophenone, 2-cyano-3,3-diphenylacrylate-2-ethylhexyl ester, [4-(2-ethylhexyloxy)-2-hydroxyphenyl]-phenyl ketone, 2-(2H-benzotriazole-2-yl)-4,6-bis(2-methyl-2-butyl)phenol, 2-(2H-benzotriazole-2-yl)-4,6-di-tert-butylphenol, and 2-(2H-benzotriazole-2-yl)-4-methylphenol, and the dosage is 0.1 to 10 g / L.

9. The method according to claim 7, characterized in that The surfactant used to disperse the ultraviolet absorber is one or more of polyvinyl pyrrolidone, dispersant NNO, cetyltrimethylammonium bromide, polyoxyethylene octylphenol ether, polysorbate, cocamidopropyl betaine, and dodecyldimethylamine oxide; the solvent used to disperse the ultraviolet absorber is one or more of n-hexane, n-heptane, n-octane, cyclohexane, petroleum ether, and ethyl acetate.

10. The method according to claim 6, characterized in that The high temperature curing temperature is 80-150° C. and the curing time is 5-15 minutes.

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