Functional fabric preparation method and finishing equipment

Abstract

The invention discloses a functional fabric preparation method and finishing equipment for realizing fabric functionalization, and relates to the technical field of textile fabric functionalization and finishing equipment. According to the preparation method of the functional fabric, the functional finishing agent and fabric fibers can be triggered to be subjected to chemical grafting reaction through ultraviolet irradiation and / or heating, and the textile fabric is subjected to one-time continuous multifunctional finishing; the finishing equipment comprises two functional modules, an ultraviolet light initiation module and a thermal initiation module, can support different finishing processes of fabrics, realizes chemical covalent bond grafting reactions of different principles, has strong production operability and high flexibility, and has ideal popularization and application values in the fields of textile fabric finishing and engineering.

Description

Technical Field

[0001] This invention relates to the field of textile fabric functionalization and finishing equipment, and particularly to a method for preparing functional fabrics and finishing equipment for realizing fabric functionalization. Background Technology

[0002] As an important component of human civilization, textiles have evolved from their basic function of providing clothing and warmth to high-performance materials that combine comfort, protection, and aesthetics. In various fields such as everyday clothing, sports and health, and medical and hygiene, the market is placing higher demands on the multifunctional integration of fabrics. Common functionalities in textiles include waterproofing, moisture wicking and quick-drying, radiant cooling, warmth retention, and antibacterial properties. Currently, in research on functional textiles, rapid sweat wicking and quick-drying, broad-spectrum antibacterial properties, and comfort are often the focus. Therefore, it is necessary to endow textiles with multifunctionality through a method that can be continuously and massively operated.

[0003] Functional modification of textiles is generally achieved through finishing methods. Finishing modification methods are relatively simple and can be used in production. Finishing processes involve functional treatment of molded textiles, typically by coating or impregnating them with finishing agents. These agents can be absorbed by the textile fiber surface or chemically bonded to it to achieve a certain degree of functionality. Currently, to achieve multifunctionality in textile fabrics, multiple finishing processes using various equipment are often required, increasing physical wear and tear on the textile itself and significantly increasing costs. Patent application CN211771963U discloses a composite material coating device for safety shoes, which is limited to coating a single layer of adhesive onto the safety shoe fabric. It improves the stability of the adhesive layer on the fabric surface through photocuring. However, its essence lies in the polymerization of monomers in the adhesive, not covalent bonding with the fibers, and its durability remains to be discussed. Patent CN201910889460.7 discloses a photocuring device for porous membrane materials. It is limited to porous membrane materials and uses ultraviolet light to initiate the polymerization of a photoinitiator to polymerize the compound monomers. The photocuring is a polymerization reaction that forms macromolecules, rather than small molecules being grafted onto the material surface.

[0004] It is evident that the surface photocuring polymerization strategy employed in existing technologies essentially forms a polymer coating on the fiber, failing to achieve molecular-level bonding between functional molecules and the fiber. This results in a risk of peeling off over long-term use and cannot fundamentally solve the comfort issue. Furthermore, current textile fabric finishing and modification equipment generally only has one finishing function, making it impossible to perform continuous, multi-functional finishing in a single operation. Therefore, given that existing finishing processes and equipment are not well-suited for the continuous, large-scale, multi-functional modification of textile fabrics, designing a new fabric functionalization process and corresponding finishing equipment for continuous, multi-functional modification of textile fabrics in a single operation is of great practical significance. Summary of the Invention

[0005] To address the shortcomings of existing textile fabric finishing and modification equipment that cannot perform continuous, multi-functional finishing in a single operation, this invention aims to provide a method for preparing functional fabrics and a finishing device. This method enables continuous, multi-functional finishing of textile fabrics in a single operation. The finishing device features a simple design, is easy to assemble, and can be mass-produced by machinery manufacturers. It not only supports different finishing processes for fabrics but also allows for the simultaneous processing of three different processes, initiating two different covalent bond grafting reactions based on different principles. The finishing steps are simple, and the production process is highly operable and flexible, making it ideal for promotion and application in the field of textile fabric finishing and engineering.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A first aspect of the present invention provides a method for preparing a functional fabric, comprising the following steps: A functional finishing agent capable of undergoing a UV-initiated reaction is applied to the surface of synthetic fiber (polyester, nylon, polypropylene, vinylon, etc.) fabric or synthetic fiber / natural fiber blend fabric. The fabric with the applied functional finishing agent is then irradiated with UV light, initiating a chemical grafting (photochemical hydrogen abstraction) reaction between the functional finishing agent and the carbon-hydrogen bonds (CH bonds) of the fabric fibers; and / or, A heat-initiated functional finishing agent is applied to the surface of a natural fiber (cotton, linen, wool, silk, etc.) fabric or a natural fiber / synthetic fiber blended fabric. The fabric with the functional finishing agent is then heated to initiate a chemical grafting reaction between the functional finishing agent and the hydroxyl, amino, carboxyl, thiol groups, etc. of the natural fiber. The functional finishing agent includes a functional compound, which is selected from at least one of hydrophilic finishing agents, hydrophobic finishing agents, antibacterial finishing agents, softening finishing agents, or flame retardant finishing agents. The hydrophilic finishing agent is a compound having the general formula (Ⅰ): (I); In general formula (Ⅰ), R1 and R2 are hydrophilic groups, independently selected from one or more combinations of sulfonic acid group, sulfonate, sulfate, carboxylic acid group, carboxylic acid group, phosphate group, phosphate, quaternary ammonium salt cation, sulfonate betaine, phosphate betaine, carboxylic betaine, hydroxyl group, and amino group; The hydrophobic finishing agent is a compound having the general formula (II): (II); In general formula (II), R1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride or carboxyl; R2 is selected from long-chain alkanes or hydrophobic groups of fluoroalkanes, preferably C1-C18 alkyl, more preferably C1, C2, C3, C4, C6, C8, C10, C12, C14, C16 or C18 alkyl; The antibacterial finishing agent is a compound having general formula (III) or (IV): (III); In general formula (Ⅲ), Y1 and Y2 are groups with antibacterial properties, independently selected from one or more combinations of quaternary ammonium salt cations, N-haloamines, guanidine groups, and amino groups; (Ⅳ); In general formula (Ⅳ), Y1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride or carboxyl; Y2 is a group with antibacterial properties selected from one or more combinations of quaternary ammonium salt cation, N-haloamine, guanidine; The softening agent is a compound having the general formula (V) or (VI): (V); In general formula (V), Y1 and Y2 are groups with soft properties, preferably one or more combinations of cationic groups (quaternary ammonium salt type, imidazole type, guanidine salt type), nonionic groups (polyether type, polyol ester type, alkanolamide type), anionic groups (fatty acid soap / salt type, sulfonate type), and siloxane groups (amino modified silicone oil, epoxy modified silicone oil, polyether modified silicone oil, methyl silicone oil); (VI); In general formula (VI), Y1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride, or carboxyl groups; Y2 is a group with soft properties, preferably one or more combinations of cationic groups (quaternary ammonium salt type, imidazole type, guanidine salt type), nonionic groups (polyether type, polyol ester type, alkanolamide type), anionic groups (fatty acid soap / salt type, sulfonate type), and siloxane groups (amino modified silicone oil, epoxy modified silicone oil, polyether modified silicone oil, methyl silicone oil); The flame retardant finishing agent is a compound having the general formula (VII) or (VIII): (VII); In general formula (VII), Y1 and Y2 are flame-retardant groups, independently selected from one or more combinations of phosphorus-based, halogen-based, nitrogen-based, and silicon-based flame-retardant groups; (VIII); In general formula (VIII), Y1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride, or carboxyl groups; Y2 is a group with flame retardant properties selected from one or more combinations of phosphorus-based, halogen-based, nitrogen-based, and silicon-based flame retardant groups.

[0007] Preferably, the hydrophilic finishing agent is selected from compounds of formula (I-1) or (I-2): (Ⅰ-1); (Ⅰ-2); The hydrophobic finishing agent is selected from compounds having the following general formula (II-1): (Ⅱ-1); In general formula (Ⅱ-1), n ​​is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16 or 18; The antimicrobial finishing agent is selected from compounds having the following general formulas (Ⅲ-1), (Ⅲ-2), (Ⅲ-3), or (Ⅲ-4): (Ⅲ-1); In general formula (Ⅲ-1), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; (Ⅲ-2); In general formula (Ⅲ-2), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18. (Ⅲ-3); In general formula (Ⅲ-3), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18. (Ⅲ-4); In general formula (Ⅲ-4), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18.

[0008] Preferably, the content of the functional compound in the functional finishing agent is 0.05 wt% or more, preferably 0.1-15 wt%, more preferably 0.1-5 wt%, such as 0.1 wt%, 0.2 wt%, 0.5 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 4.0 wt%, 4.5 wt%, and 5.0 wt%.

[0009] Furthermore, the functional finishing agent also includes one or more combinations of pH adjusters, surfactants, and solvents.

[0010] The pH adjuster is selected from at least one of organic acids or Lewis bases, and the pH adjuster is used to adjust the pH of the functional finishing agent to 4-10; The surfactant is selected from at least one of stearic acid, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium dodecyl carboxylate, sodium hexadecyl sulfonate, sodium hexadecyl carboxylate, sodium hexadecyl sulfate, sodium octadecyl sulfonate, lecithin, or fatty acid glycerides.

[0011] The solvent is selected from one or more combinations of water, methanol, ethanol, dimethyl sulfoxide, dichloromethane, chloroform, tetrachloromethane, ether, ketone, ester, nitrile, amide, and aromatic compounds. It is understood that the aforementioned solvents are illustrative examples, and the specific implementation of this invention includes, but is not limited to, these solvents.

[0012] Preferably, the ether is selected from tetrahydrofuran, 1,4-dioxane, ethylene glycol dimethyl ether, and combinations thereof; the ketone is selected from acetone, methyl ethyl ketone, cyclohexanone, acetophenone, phorone, and combinations thereof; the aromatic compound is selected from toluene, pyridine, imidazole, and combinations thereof; the ester is selected from ethyl acetate, n-butyl acetate, n-propyl acetate, ethyl formate, methyl formate, and combinations thereof; the nitrile is selected from acetonitrile, propionitrile, benzonitrile, and combinations thereof; and the amide is selected from N,N-dimethylacetamide, N,N-dimethylformamide, N,N-dimethylpyrrolidone, and combinations thereof.

[0013] The method for preparing functional fabrics of the present invention uses ultraviolet light with a wavelength of 200-420nm, preferably 254nm, 300nm, 320nm, 365nm, or 400nm; and an irradiation time of 1-360s, preferably 10s, 20s, 40s, 60s, 100s, 180s, 240s, 300s, or 360s. The heating process employs hot rolling and / or hot air to initiate a chemical grafting reaction between the functional finishing agent and the fabric fibers; the hot rolling temperature is 25-300℃, preferably 50℃, 80℃, 100℃, 120℃, 150℃, 180℃, 200℃, or 250℃; the hot rolling pressure is 1-500kN, preferably 5kN, 10kN, 50kN, 100kN, 200kN, 300kN, or 400kN; the hot air temperature is 25-200℃, preferably 50℃, 100℃, 150℃, or 180℃; the heating time is 1-300s, preferably 10s, 30s, 40s, 60s, 100s, 180s, 240s, or 300s.

[0014] Preferably, in the functional fabric preparation method of the present invention, the functional finishing agent is applied to the fabric surface by impregnation, brushing or spraying.

[0015] A second aspect of the present invention provides a finishing device capable of implementing the above-described method for preparing functional fabrics. The finishing device includes two functional modules (functional module one and functional module two), an ultraviolet light initiation module, and a thermal initiation module. Each functional module has three finishing components: impregnation, brushing, and spraying, which can operate independently or in combination according to functional requirements. The ultraviolet light initiation module is used for photo-initiating the chemical grafting of functional finishing agents; the thermal initiation module is used for thermally initiating the chemical grafting of functional finishing agents, and includes hot rolling, setting, and drying.

[0016] Specifically, the finishing equipment includes a functional module one, an ultraviolet light initiation module, a functional module two, and a thermal initiation module arranged sequentially along the fabric's travel direction; Both functional module one and functional module two include at least one of immersion component, brushing component, and spraying component; The ultraviolet light initiation module includes ultraviolet light irradiation systems located on both sides of the fabric, and a cooling water system for dissipating heat from the ultraviolet light irradiation systems. The ultraviolet light irradiation systems on both sides can be independently controlled to be turned on or off. The thermal initiation module includes a hot rolling system, a hot air system, and a constant temperature control system. The hot rolling system and the hot air system can operate independently or in combination. The first functional module is used to apply a functional finishing agent that can undergo an ultraviolet light-initiated reaction to the fabric surface; the ultraviolet light initiation module is used to irradiate the functional finishing agent applied to the fabric surface by the first functional module with ultraviolet light; the second functional module is used to apply a functional finishing agent that can undergo a heat-initiated reaction to the fabric surface; the heat initiation module is used to heat the functional finishing agent applied to the fabric surface by the second functional module.

[0017] Preferably, the impregnation component, brushing component, and spraying component are all equipped with a constant temperature heating system; the constant temperature heating system is used to heat the fabric to which the functional finishing agent has been applied to 25-300℃, preferably 30℃, 45℃, 50℃, 60℃, 80℃, 90℃, 100℃, 120℃, 150℃, 180℃, 200℃, and 250℃.

[0018] Furthermore, the finishing equipment also includes a stretching module and a winding module arranged sequentially along the fabric travel direction; the stretching module is located at the rear end of the heat initiation module and is used to stretch and shape the fabric; the winding module is located at the rear end of the stretching module and is used to wind up the finished fabric.

[0019] In some specific embodiments, the brushing component consists of rollers, coating rollers, and a constant temperature heating system. The functional finishing agent is coated onto the fabric surface. The constant temperature heating system heats the fabric coated with the functional finishing agent to a certain temperature, which can be set in the range of 25-300℃ (e.g., 30℃, 50℃, 60℃, 80℃, 90℃, 100℃, 120℃, 150℃, 180℃, 200℃, 250℃). The pressure of the rollers and coating rollers on the fabric can be set in the range of 10-500kN (e.g., 50kN, 100kN, 200kN, 300kN, 400kN). The impregnation unit consists of an impregnation tank, a constant temperature heating system, and a stirrer. The impregnation tank is used to hold the functional finishing agent and impregnate the fabric. The constant temperature heating system can heat the fabric impregnated with the functional finishing agent to a certain temperature, which can be set within the range of 30℃, 50℃, 60℃, 80℃, 90℃, 100℃, 120℃, 150℃, 180℃, 200℃, and 250℃. The spraying unit consists of a spray nozzle, a material tank, and a constant temperature heating system. The functional finishing agent can be sprayed onto the fabric surface through the spray nozzle. The constant temperature heating system can heat the fabric coated with the functional finishing agent to a certain temperature, which can be set within the range of 25-300℃ (e.g., 30℃, 50℃, 60℃, 80℃, 90℃, 100℃, 120℃, 150℃, 180℃, 200℃, and 250℃).

[0020] In some specific embodiments, the ultraviolet (UV) light initiation module consists of two UV irradiation systems and a cooling water system. The two UV irradiation systems are located on opposite sides of the fabric. The UV lamps in the UV irradiation systems are horizontally and evenly distributed, with wavelengths ranging from 200-420 nm (e.g., 200 nm, 254 nm, 300 nm, 320 nm, 365 nm, 400 nm). The output power of a single UV lamp is 5-1000 W / cm, preferably 10 W / cm, 20 W / cm, 50 W / cm, 100 W / cm, 200 W / cm, 300 W / cm, 500 W / cm, 600 W / cm, 800 W / cm, or 900 W / cm. The UV lamps do not contact the fabric, and the vertical distance between them and the fabric is 10-50 mm. The UV lamps are positioned at 1 cm, preferably 10 cm, 15 cm, 20 cm, 25 cm, or 30 cm; the irradiation time is 1-360 s, preferably 20 s, 40 s, 60 s, 100 s, 180 s, 240 s, 300 s, or 360 s. Each UV lamp can operate independently or simultaneously as needed. The cooling water system cools the UV irradiation system, as prolonged UV irradiation generates a significant amount of heat, ensuring the normal operation of the UV photoinitiation system.

[0021] The thermal initiation module consists of a hot rolling system, a hot air system, and a constant temperature control system. It performs thermochemical grafting of the functional finishing agent through the hot rolling and hot air systems, and also sets and dries the fabric. The thermal initiation module heats the fabric / functional finishing agent, chemically grafting the functional finishing agent onto the fabric through thermal initiation, and then dries and sets the fabric / functional finishing agent. The temperature can be set within the range of 25-300℃, preferably 50℃, 100℃, 150℃, 200℃, 250℃, or 300℃, and the time is 1-300s, preferably 30s, 40s, 60s, 100s, 180s, 240s, or 300s. The pressure of the hot rolling rollers on the fabric can be set within the range of 10-500kN, preferably 50kN, 100kN, 200kN, 300kN, or 400kN. Specifically, the hot rolling temperature of the hot rolling system can be controlled between 25-300℃, preferably 50℃, 100℃, 150℃, 200℃, 250℃, and 300℃; the hot air temperature can be controlled between 25-300℃, preferably 50℃, 80℃, 100℃, 120℃, 150℃, 180℃, and 250℃.

[0022] Both the stretching module and the winding module consist of a motor and roller components. The pressure of the rollers on the fabric can be set in the range of 10-500kN (e.g., 50kN, 100kN, 200kN, 300kN, 400kN), the stretching force can be set in the range of 1-1000N (e.g., 50N, 100N, 300N, 600kN, 900kN), and the fabric travel speed can be set in the range of 0.1-20.0m / min (e.g., 0.5m / min, 1m / min, 5m / min, 10m / min, 15m / min, 18m / min).

[0023] The functional module can be used independently or in combination with three components: impregnation, brushing, and spraying, depending on the fabric's functional requirements. The UV initiation module may not perform UV-initiated chemical grafting on the fabric, and the thermal initiation module may not perform thermal-initiated chemical grafting on the fabric; however, at least one of the UV initiation and thermal initiation modules must be selected as the module to initiate chemical grafting as the fabric functional finishing agent.

[0024] The finishing equipment is designed to consist of two functional modules, an ultraviolet light initiation module, a thermal initiation module, a stretching module, and a winding module. Each module has a specific function and can independently control and combine the impregnation, brushing, and spraying components in the two functional modules according to the needs of the function.

[0025] The specific steps of the above-mentioned finishing equipment for the one-time continuous finishing and modification of fabrics include: (1) The functional finishing agent that can undergo ultraviolet light-induced reaction (hereinafter referred to as functional finishing agent one) is added to or not added to the impregnation component, brushing component or spraying component of functional module one. The brushing time, impregnation time, spraying time or not are set according to the finishing equipment and the preset load of functional finishing agent one. The roller pressure, temperature, fabric feeding speed, etc. are also set.

[0026] (2) The fabric enters the finishing equipment through the stretching module and the functional module one. The impregnation component, brushing component or spraying component in the functional module one applies the functional finishing agent one to the fabric surface.

[0027] (3) After passing through functional module one, the fabric enters the ultraviolet light initiation module. The ultraviolet light initiation module can be set to single-sided irradiation, double-sided irradiation, or no irradiation. If irradiation is selected, the ultraviolet irradiation power can be set to photo-initiate chemical grafting of functional finishing agent one onto the surface of the fabric fibers, giving functional finishing agent one the functionality of fabric. This is fabric function one.

[0028] (4) After the fabric passes through the ultraviolet light initiation module, it enters the functional module two. The functional module two may or may not add a functional finishing agent that can undergo a thermal initiation reaction (hereinafter referred to as functional finishing agent two). According to the preset load of functional finishing agent two, the brushing time, immersion time, spraying time or no setting can be set, and the roller pressure, temperature, fabric feeding speed, etc. can be set.

[0029] (5) After passing through functional module two, the fabric enters the thermal initiation module. The thermal initiation can be set with hot rolling temperature, roller pressure, hot air power, or no thermal initiation finishing. The functional finishing agent two is thermally initiated and chemically grafted onto the surface of the fabric fibers to give the fabric functional finishing agent two functionality, or the fabric is shaped and dried. This is the second function of the fabric.

[0030] (6) The fabric is further recycled through the stretching module and the winding machine to obtain the functional fabric.

[0031] Optionally, before step (1), a pretreatment of the fabric is included, the pretreatment including: scouring. Water wash pickling Water wash neutralization Water wash bleach hot water wash Drying and other steps.

[0032] Optionally, after step (6), a post-treatment of the fabric is also included, the post-treatment including: neutralization Water wash bleach hot water wash Drying and other steps.

[0033] The functional fabric preparation method and finishing equipment provided by this invention can be used for performance analysis and application of multifunctional fabrics.

[0034] Compared with the prior art, the advantages of the present invention include at least the following: First, this invention employs a chemical covalent bonding system between functional finishing agents and fiber substrates. Through ultraviolet light initiation and / or thermal initiation, the uniform loading and stable bonding of the functional finishing agent components within the fabric fibers are achieved. Since the functional materials and fiber structure are formed simultaneously during fabric finishing, the functional components can be firmly fixed through chemical bonding, avoiding the risk of detachment during subsequent finishing processes. By selecting different wavelengths of light sources (such as UV-A / B) or adjusting the type of active groups and thermal initiation conditions, the grafting rate and covalent bonding rate of the functional finishing agent components can be precisely controlled, thereby ensuring that the fabric's mechanical properties (such as flexibility and abrasion resistance), breathability, and transparency are not compromised and that the functionality is preserved and durable. This preparation method is process-controllable, cost-effective, and can be flexibly adapted to different application scenarios by adjusting fabric finishing parameters, showing broad application prospects in sportswear, medical protective equipment, and smart textiles.

[0035] Secondly, this invention, through the approach of "equipment design - functional integration - process optimization," achieves the design and manufacture of a one-time continuous finishing process equipment for functional fabrics. By employing a continuous, large-scale, and modular design approach, and through the combination or independent use of a single device or functional components, it enables the simultaneous finishing of two or more functional fabrics, significantly reducing the complexity of the fabric finishing process and achieving high-efficiency production and energy savings. The finishing equipment and preparation method of this invention are suitable for preparing unidirectional moisture-wicking fabrics within the functional fabric category. The finishing equipment can precisely construct micro-nano hierarchical structures, forming a surface morphology with gradient wettability, enabling rapid directional drainage of sweat. Simultaneously, its three-dimensional interconnected porous network facilitates air circulation, significantly improving wearing comfort. This not only simulates the directional water transport mechanism of natural organisms but also overcomes the technical limitations of traditional textile materials with their single function. Furthermore, the unidirectional moisture-wicking fabric finishing technology can achieve rapid molding of micron-level groove structures, endowing the fabric with a unidirectional moisture-wicking capillary effect, which has significant advantages in the efficient preparation of functional textiles.

[0036] Third, this invention utilizes the digital photo / thermal initiation capability of the finishing equipment to prepare functional fabrics with moisture gradients, antibacterial properties, softness, or flame retardancy. The unidirectional moisture-wicking fabric's unidirectional perspiration wicking ability adapts to the capillary action of sweat, efficiently guiding the directional transport of liquid. By adjusting fabric finishing parameters (such as UV light or thermal initiation time and power), hot rolling parameters (such as hot rolling temperature, pressure, and roll-off rate), and component design of functional modules, it is possible to customize the construction of hydrophobic-hydrophilic gradient interfaces, antibacterial components, softening components, or flame-retardant components, further optimizing the grafting rate and durability of functional agents on the fabric fibers. This technology can also achieve local functional differentiation through multi-material, multi-modal fabric finishing (such as zoned design of high antibacterial, high moisture-wicking, high softness, or high flame-retardant areas), providing innovative solutions for the development of integrated multifunctional fabrics with complex functional requirements. It has significant effects on improving human thermal and moisture comfort, preventing microbial growth, enhancing wearing comfort, or providing fire protection. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the sorting device in Embodiment 1 of the present invention.

[0039] Figure 2 This is a schematic diagram of the structure of the second spray component in functional module two of embodiment 3.

[0040] Figure 3 This is a schematic diagram of the brushing component and the spraying component in the functional module of Example 9.

[0041] Explanation of symbols in the diagram: 1-Functional Module 1; 11-First Impregnation Component; 12-First Brush Coating Component; 13-First Spray Component; 2-Ultraviolet Light Initiation Module; 21-Ultraviolet Irradiation System; 22-First Spray Washing Device; 23-First Spray Water Recovery Tank; 3-Functional Module 2; 31-Second Impregnation Component; 32-Second Brush Coating Component; 33-Second Spray Component; 4-Heat Initiation Module; 41-Heat Radiation Heating Module; 42-Positive Pressure Airflow Module; 43-Hot Rolling System; 44-Second Spray Washing Device; 45-Second Spray Water Recovery Tank; 5-Stretching Module; 6-Winding Machine Module; 7-Fabric. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0043] The finishing equipment used in the following embodiments is only for illustrative purposes. In the actual implementation of this invention, the finishing components (such as impregnation components, brushing components, spraying components), ultraviolet light initiation modules and thermal initiation modules in the functional modules may not all use these functions.

[0044] In some embodiments, the finishing equipment chemically grafts two functional finishing agents onto the surface of the fabric fibers through two finishing processes: immersion / brushing / spraying and UV initiation, and immersion / brushing / spraying and thermal initiation, thereby obtaining a multifunctional fabric.

[0045] In some embodiments, the finishing equipment initiates a finishing process by immersion / brushing / spraying and ultraviolet light to chemically graft a functional finishing agent onto the surface of the fabric fibers, thereby obtaining a functional fabric.

[0046] In some embodiments, the finishing equipment chemically grafts a functional finishing agent onto the surface of fabric fibers through a finishing process involving immersion / brushing / spraying and thermal initiation, thereby obtaining a multifunctional fabric.

[0047] In the preferred embodiments below, the materials used, i.e., the materials for preparing functional fabrics, include polyester / cotton blended fabrics, polyester fabrics, cotton fabrics, benzophenone hydrophilic agents, benzophenone antibacterial agents, triazine antibacterial agents, trimethylsiloxane hydrophobic agents, etc. It is understood that the above materials are illustrative examples, and the specific implementation of this invention includes, but is not limited to, the above materials.

[0048] In some embodiments, the structural formula of the benzophenone hydrophilic agent is as follows: (Ⅰ-1) or (Ⅰ-2).

[0049] The preparation method of the compound with structural formula (Ⅰ-2) includes the following steps: 1,3-propanesulfonyl lactone With 4,4′-bis(dimethylamino)benzophenone A nucleophilic substitution reaction was carried out to obtain compound (Ⅰ-2).

[0050] In some embodiments, the structural formula of the benzophenone antibacterial agent is as follows: (Ⅲ-1), where X is a halogenated element, preferably Cl, Br, or I; n is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18.

[0051] The preparation method of structural formula (Ⅲ-1) includes the following steps: haloalkanes With 4,4′-bis(dimethylamino)benzophenone Compound (Ⅲ-1) was obtained by nucleophilic substitution reaction.

[0052] In some embodiments, the structural formula of the benzophenone antibacterial agent is as follows: (Ⅲ-2), where X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18.

[0053] The preparation method of structural formula (Ⅲ-2) includes the following steps: alkane tertiary amine With 4,4'-dihaloalkylbenzophenone Compound (Ⅲ-2) was obtained by a nucleophilic substitution reaction. The preparation method of the 4,4'-dihaloalkylbenzophenone includes the following steps: 4,4'-dialkylbenzophenone... With N-halosuccinimide Halogenation reaction yields 4,4'-dihaloalkylbenzophenone. X is a halogen, preferably Cl, Br or I.

[0054] In some embodiments, the structural formula of the benzophenone antibacterial agent is as follows: (Ⅲ-3), where X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18.

[0055] The preparation method of structural formula (Ⅲ-2) includes the following steps: 5,5-Dimethylhydantoin With 4,4'-dihaloalkylbenzophenone A nucleophilic substitution reaction was carried out, followed by chlorination with trichloroisocyanuric acid to obtain compound (Ⅲ-3). The preparation method of the 4,4'-dihaloalkylbenzophenone includes the following steps: 4,4'-dialkylbenzophenone... With N-halosuccinimide Halogenation reaction yields 4,4'-dihaloalkylbenzophenone. X is a halogen, preferably Cl, Br or I.

[0056] In some embodiments, the triazine-based antibacterial agent has the following structural formula: (Ⅲ-4), where X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18.

[0057] The preparation method of compound (Ⅲ-4) includes the following steps: pass With haloalkanes Reaction generation ;Then With cyanuric chloride The reaction yields compound (Ⅲ-4).

[0058] In some embodiments, the trimethylsiloxane hydrophobic agent has the following structural formula: (Ⅱ-1).

[0059] A functional finishing agent containing the functional compound benzophenone hydrophilic agent may include a benzophenone hydrophilic agent, a pH adjuster (citric acid or sodium carbonate), a solvent (water and / or ethanol), and a surfactant (sodium dodecyl sulfonate), and is prepared by the following method: dissolving the benzophenone hydrophilic agent in a solvent, adding a pH adjuster to adjust the pH, and then adding a surfactant for dispersion, thereby preparing a functional finishing agent containing the benzophenone hydrophilic agent.

[0060] A functional finishing agent containing a triazine-based antibacterial compound may include benzophenone haloalkyl quaternary ammonium salt or N-haloamine or guanidine antibacterial agent, pH adjuster (citric acid or sodium carbonate), solvent (N,N-dimethylformamide), and surfactant (sodium dodecyl sulfonate), and is prepared by the following method: dissolving the triazine-based antibacterial agent in a solvent, adding a pH adjuster to adjust the pH, and then adding a surfactant for dispersion, thereby preparing a functional finishing agent containing a triazine-based antibacterial agent.

[0061] The finishing equipment and functional fabric preparation method of the present invention will be further described below through several specific embodiments. To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. In the embodiments, unless otherwise specified, standard operating conditions or manufacturer-recommended guidelines should be followed. The reagents or instruments used, unless otherwise specified, are all commercially available standard products.

[0062] The functional compounds and their effective mass concentrations in the functional finishing agents I and II used in Examples 1-10 below are shown in Table 1.

[0063] Table 1 Example 1 The purpose of this embodiment is to prepare a multifunctional polyester / cotton blend fabric that is unidirectionally moisture-wicking, UV-protective, antibacterial, and soft.

[0064] like Figure 1 The finishing equipment shown is used in this embodiment to prepare a multifunctional polyester / cotton blend fabric with unidirectional moisture wicking, UV protection, antibacterial properties, and softness. This finishing equipment consists of two functional modules, a UV initiation module, a heat initiation module, a stretching module, and a winding module. Specifically, it includes functional module 1, UV initiation module 2, functional module 3, heat initiation module 4, stretching module 5, and winding module 6, arranged sequentially along the fabric 7's travel direction.

[0065] Functional module 1 includes a first impregnation component 11 and a first brushing component 12, which can be used to apply a functional finishing agent that can undergo an ultraviolet light-induced reaction to the fabric surface.

[0066] The ultraviolet (UV) light initiation module 2 includes two UV irradiation systems 21 and a cooling water system. The two UV irradiation systems 21 are located on both sides of the fabric 7. The UV lamps of the UV irradiation systems 21 are horizontally and evenly distributed, with a wavelength within the 254 nm range. The UV lamps do not contact the fabric and are 15 cm vertically away from the fabric 7. They can operate independently or simultaneously as needed. Prolonged UV irradiation generates a large amount of heat, and the cooling water system is used to cool the UV irradiation systems 21, ensuring the normal operation of the UV light initiation module 2. The rear end of the UV light initiation module 2 also includes a first spray rinsing device 22 and a first spray water recovery tank 23. The first spray water recovery tank 23 is located below the first spray rinsing device 22 and is used to recover the spray water from the first spray rinsing device 22.

[0067] Functional module 2 3 includes a second impregnation component 31 for applying a functional finishing agent 2 that can undergo a heat-initiated reaction to the fabric surface; The thermal initiation module 4 includes a hot air system, a hot rolling system 43, and a constant temperature control system. It is used to heat the functional finishing agent 2 applied to the fabric surface by the functional module 2 3, chemically grafting the functional finishing agent 2 onto the fabric through thermal initiation, and then drying and setting the fabric. The heating temperature is set within the range of 25-300℃, and the pressure of the hot rolling rollers of the hot rolling system 43 on the fabric can be set within the range of 10-500kN. The hot air system includes a thermal radiation heating module 41 and a positive pressure airflow module 42; the thermal radiation heating module 41 and the positive pressure airflow module 42 are arranged opposite each other and are located on both sides of the fabric 7. The rear section of the hot air system also includes a second spray rinsing device 44 and a first spray water recovery tank 45. The first spray water recovery tank 44 is located below the first spray rinsing device 22 and is used to recover the spray water from the first spray rinsing device 22. The hot rolling system is located at the rear end of the hot air system, and the hot rolling system and the hot air system can operate independently or in combination.

[0068] The stretching module 5 is located at the rear end of the heat initiation module 4 and is used to stretch and shape the fabric 7.

[0069] The winding module 6 is located at the rear end of the stretching module 4 and is used to wind up the finished fabric 7.

[0070] The following steps are taken to prepare a multifunctional polyester / cotton blend fabric with unidirectional moisture wicking, UV protection, antibacterial properties, and softness using the above finishing equipment: (1) Preparation of functional finishing agent one: Take the benzophenone hydrophilic agent shown in Table 1 in Example 1, dissolve it in deionized water, then add 1M citric acid aqueous solution to adjust pH=6, and ultrasonically stir for 30min to finally prepare functional finishing agent one with a total solute (benzophenone hydrophilic agent) concentration of 0.5 wt%.

[0071] (2) Preparation of functional finishing agent II: Take the triazine quaternary ammonium salt antibacterial agent shown in Table 1 of Example 1, dissolve it in deionized water, then add sodium carbonate to adjust pH=8, and ultrasonically stir for 30 min to finally prepare functional finishing agent II with a total solute (triazine quaternary ammonium salt antibacterial agent) concentration of 2.0wt%.

[0072] (3) Before finishing, the polyester / cotton blended fabric is pre-treated to completely clean the adhesive on the fabric surface. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0073] (4) Add the functional finishing agent to the brushing component 12 of the functional module 1 of the finishing equipment in this embodiment, adjust the brushing nozzle to contact the fabric, set the brushing time to 30s, the temperature to 50℃, the roller pressure to 90kN, and the feeding speed of the polyester / cotton blended fabric to 0.5m / min.

[0074] (5) When the polyester / cotton blended fabric enters the UV initiation module 2, the UV irradiation system 21 on the side of the fabric coated with functional finishing agent 1 is turned on, while the UV irradiation system on the uncoated side is not turned on. The irradiation power is set to 100W / cm and the irradiation time is 1min. Benzophenone hydrophilic agent undergoes a photochemical reaction under UV initiation, forming a stable and strong covalent bond with the polyester fibers of the polyester / cotton blended fabric.

[0075] (6) Add the functional finishing agent II to the second impregnation component 31 of the functional module II 3 of the finishing equipment in this embodiment, and set the impregnation temperature of the functional finishing agent II to 50°C and the impregnation time to 30s.

[0076] (7) The polyester / cotton blended fabric enters the thermal initiation module 4, where the temperature of the hot air generated by the hot air system is set to 160°C, the pressure of the hot rolling rollers in the hot rolling system 43 is 300kN, and the hot rolling temperature is 50°C. The triazine quaternary ammonium salt antibacterial agent undergoes a chemical grafting reaction under thermal initiation, forming stable and strong covalent bonds with the cotton fibers in the polyester / cotton blended fabric.

[0077] (8) The polyester / cotton blended fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 500N and the winding speed is the same as the feeding speed, which is 0.5m / min.

[0078] (9) Finally, the finished polyester / cotton blended fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a polyester / cotton blended fabric with one-way moisture wicking, UV protection, antibacterial and soft multi-functionality.

[0079] Example 2 The purpose of this embodiment is to prepare a polyester fabric with unidirectional moisture-wicking, antibacterial, and UV-protective functions.

[0080] The sorting equipment used in this embodiment is the same as that in Embodiment 1.

[0081] The following steps are taken to prepare unidirectional moisture-wicking, antibacterial, and UV-protective polyester fabrics using this finishing equipment: (1) Preparation of functional finishing agent one: Take the benzophenone hydrophilic agent shown in Example 2 in Table 1, dissolve it in 90% acetophenone aqueous solution, then add 1M citric acid aqueous solution to adjust pH=6, and ultrasonically stir for 30min to finally prepare functional finishing agent one with a total solute (benzophenone hydrophilic agent) concentration of 2.0wt%.

[0082] (2) Before finishing, the polyester fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0083] (3) Add the functional finishing agent to the first impregnation component 11 of the functional module 1 of the finishing equipment in this embodiment, adjust the functional finishing agent to contact the fabric, set the impregnation time to 50s, the temperature to 60℃, the roller pressure to 100kN, and the fabric feeding speed of the polyester fabric to 1m / min.

[0084] (4) When the polyester fabric enters the UV initiation module 2, only one side of the UV irradiation system 21 is turned on, and the irradiation power is set to 100W / cm and the irradiation time is 1.5min. The benzophenone hydrophilic agent undergoes a photochemical grafting reaction with the polyester fiber under UV initiation, forming a stable and strong covalent bond with the polyester fiber, while the benzophenone hydrophilic agent on the side not irradiated by UV does not react with the polyester fiber.

[0085] (5) During the process of functional module 23, no finishing is done on the polyester fabric.

[0086] (6) The polyester fabric passes through the heat initiation module 4, where the hot air temperature generated by the hot air system is set to 120°C, the hot rolling system 43 has a hot rolling roller pressure of 400kN and a hot rolling temperature of 100°C, and the fabric is shaped and dried.

[0087] (7) The polyester fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 600N and the winding speed is the same as the feeding speed.

[0088] (8) Finally, the finished polyester fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a polyester fabric with one-way moisture wicking, antibacterial and UV protection.

[0089] Example 3 The purpose of this embodiment is to prepare a nylon / cotton blended fabric with unidirectional moisture-wicking and antibacterial functions.

[0090] The difference between the sorting device used in this embodiment and the sorting device in Embodiment 1 is that the sorting device in this embodiment, functional module two, further includes, for example, Figure 2 The second spraying component 33 shown is disposed at the front end or rear end of the second immersion component 31; other structures are the same as the finishing device in Embodiment 1.

[0091] The following steps are taken to prepare nylon / cotton blended fabrics with unidirectional moisture-wicking and antibacterial functions using this finishing equipment: (1) Preparation of functional finishing agent II: Take the triazine long-chain quaternary ammonium salt hydrophobic agent (C12 long-chain quaternary ammonium salt) shown in Table 1 in 3, dissolve it in 90% ethyl acetate aqueous solution, then add sodium carbonate to adjust pH=8, and ultrasonically stir for 30 min to finally prepare functional finishing agent II with a total solute (triazine long-chain quaternary ammonium salt hydrophobic agent) concentration of 5.0 wt%.

[0092] (2) Before finishing, the nylon / cotton blended fabric is pre-treated to completely clean the adhesive on the fabric surface. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0093] (3) When nylon / cotton blended fabrics enter functional module 1 and ultraviolet light initiation module 2, no processing is performed.

[0094] (4) Add the second functional finishing agent to the second spray component 33 of the finishing equipment functional module 2 3 in this embodiment, adjust the distance between the spray nozzle and the fabric, set the spray time to 3s, the temperature to 40℃, and the feeding speed of the nylon / cotton blended fabric to 0.8m / min.

[0095] (5) The nylon / cotton blended fabric passes through the heat initiation module 4, where the hot air temperature generated by the hot air system is set to 160℃, the hot rolling roller pressure of the hot rolling system 43 is 200kN, and the hot rolling temperature is 60℃. The triazine long-chain quaternary ammonium salt undergoes heat-initiated chemical grafting with the cotton fibers in the nylon / cotton blended fabric, thereby constructing an antibacterial and hydrophobic layer on the sprayed side of the nylon / cotton blended fabric, while the cotton fibers on the unsprayed side remain hydrophilic, and the fabric is then shaped and dried.

[0096] (6) The nylon / cotton blended fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 500N and the winding speed is the same as the feeding speed.

[0097] (7) Finally, the finished nylon / cotton blended fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain nylon / cotton blended fabric with one-way moisture wicking, antibacterial and UV protection functions.

[0098] Example 4 The purpose of this embodiment is to prepare a polyester fabric with unidirectional moisture-wicking, antibacterial, and UV-protective functions.

[0099] The sorting equipment used in this embodiment is the same as that in Embodiment 1.

[0100] The following steps are taken to prepare unidirectional moisture-wicking, antibacterial, and UV-protective polyester fabrics using this finishing equipment: (1) Preparation of functional finishing agent one: Take the benzophenone antibacterial hydrophilic agent (quaternary ammonium salt) of Example 4 shown in Table 1, dissolve it in 10% butanol aqueous solution, then add 1M citric acid aqueous solution to adjust pH=6, and ultrasonically stir for 30min to finally prepare functional finishing agent one with a total solute (benzophenone antibacterial hydrophilic agent) concentration of 0.5wt%.

[0101] (2) Before finishing, the polyester fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0102] (3) Add the functional finishing agent to the first impregnation component 11 of the functional module 1 of the finishing equipment in this embodiment, set the impregnation temperature of the functional finishing agent to 40°C, the impregnation time to 150s, and the feeding speed of the polyester fabric to 0.3m / min.

[0103] (4) The polyester fabric enters the UV initiation module 2, and only one side of the fabric is exposed to UV light for single-sided UV irradiation. The light power is set to 60W / cm and the irradiation time is 2min. The benzophenone hydrophilic agent undergoes a photochemical grafting reaction on the UV-irradiated side, forming a stable and strong covalent bond with the fibers of the polyester fabric, giving it hydrophilicity on one side. The benzophenone hydrophilic agent on the unirradiated side will not chemically graft with the fibers in the polyester fabric, thus maintaining hydrophobicity.

[0104] (5) No finishing is done on the polyester fabric during the process of functional module 2.3.

[0105] (6) When the polyester fabric passes through the heat initiation module 4, the hot air temperature generated by the hot air system is set to 90°C, the hot rolling roller pressure of the hot rolling system 43 is 150kN, and the hot rolling temperature is 100°C to shape and dry the polyester fabric.

[0106] (7) The polyester fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 450N and the winding speed is the same as the feeding speed.

[0107] (8) Finally, the finished polyester fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a polyester fabric with one-way moisture wicking, antibacterial, stain-proof and UV protection functions.

[0108] Example 5 The purpose of this embodiment is to prepare a three-functional polyester / cotton blend fabric with antibacterial, UV-resistant, and hydrophilic properties.

[0109] The sorting equipment used in this embodiment is the same as that in Embodiment 1.

[0110] The following steps are taken to prepare a three-functional polyester / cotton blended fabric with antibacterial, UV-resistant, and hydrophilic properties using this finishing equipment: (1) Preparation of functional finishing agent one: Take the benzophenone hydrophilic agent (sodium sulfonate) of Example 5 shown in Table 1, dissolve it in 10% ethanol aqueous solution, then add 1M citric acid aqueous solution to adjust pH=6.2, ultrasonically stir for 30min, and finally prepare functional finishing agent one with a total solute concentration of 3wt%.

[0111] (2) Preparation of functional finishing agent II: Take the triazine quaternary ammonium salt antibacterial agent shown in Table 1 in Example 5, dissolve it in deionized water, then add sodium carbonate to adjust pH=8, and ultrasonically stir for 30 min to finally prepare functional finishing agent II with a total concentration of 0.10wt% of solute (triazine quaternary ammonium salt antibacterial agent).

[0112] (3) Before finishing, the polyester / cotton blended fabric is pre-treated to completely clean the adhesive on the fabric surface. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0113] (4) Add the functional finishing agent to the first impregnation component 11 of the functional module 1 of the finishing equipment in this embodiment, and set the impregnation temperature of the functional finishing agent to 55°C and the impregnation time to 35s. The feed speed of the polyester / cotton blended fabric is 0.6m / min.

[0114] (5) The polyester / cotton blended fabric enters the UV initiation module 2. The UV irradiation systems on both sides of the fabric are turned on for double-sided UV irradiation initiation. The irradiation power is set to 100W / cm and the irradiation time is 1min. Benzophenone hydrophilic agent undergoes a chemical grafting reaction under UV irradiation initiation, forming stable and strong covalent bonds with the fibers of the polyester fabric, thus giving the polyester / cotton blended fabric hydrophilicity.

[0115] (6) Add the functional finishing agent II to the second impregnation component 31 of the functional module II 3 of the finishing equipment in this embodiment, and set the impregnation temperature of the functional finishing agent II to 50°C and the impregnation time to 30s.

[0116] (7) When the polyester / cotton blended fabric passes through the heat initiation module 4, the hot air temperature generated by the hot air system is set to 130℃, the pressure of the hot rolling rollers of the hot rolling system 43 is 800kN, and the hot rolling temperature is 80℃. The polyester / blended fabric is then shaped and dried.

[0117] (8) The polyester / blended fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 600N and the winding speed is the same as the feeding speed.

[0118] (9) Finally, the finished polyester / cotton blended fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a polyester / cotton blended fabric with antibacterial, anti-ultraviolet and hydrophilic functions.

[0119] Example 6 The purpose of this embodiment is to prepare a three-functional polyester fabric with antistatic, antibacterial and UV protection properties.

[0120] The sorting equipment used in this embodiment is the same as that in Embodiment 1.

[0121] The following steps are taken to prepare antistatic, antibacterial, and UV-protective polyester fabric using this finishing equipment: (1) Preparation of functional finishing agent one: Take the benzophenone hydrophilic agent shown in Example 6 in Table 1, dissolve it in 30% ethanol aqueous solution, then add 1M citric acid aqueous solution to adjust pH=5.8, ultrasonically stir for 50min, and finally prepare functional finishing agent one with a total solute (benzophenone hydrophilic agent) concentration of 4.0wt%.

[0122] (2) Before finishing, the polyester fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0123] (3) Add the functional finishing agent to the first impregnation component 11 of the functional module 1 of the finishing equipment in this embodiment, and set the impregnation temperature of the functional finishing agent to 50°C and the impregnation time to 100s. The feeding speed of the polyester fabric is 1.2m / min.

[0124] (4) The polyester fabric enters the UV initiation module, and the UV irradiation systems on both sides of the fabric are turned on for double-sided UV irradiation initiation. The irradiation power is set to 150W / cm and the irradiation time is 3min. Benzophenone hydrophilic agent undergoes a chemical grafting reaction under UV irradiation initiation, forming stable and strong covalent bonds with the fibers of the polyester fabric, thus giving the polyester fabric hydrophilicity.

[0125] (5) No finishing is done on the polyester fabric during the process of functional module 2.3.

[0126] (6) When the polyester fabric passes through the heat initiation module 4, the hot air temperature generated by the hot air system is set to 120℃, the hot rolling roller pressure of the hot rolling system 43 is 100kN, and the hot air temperature is 100℃. The polyester fabric is then shaped and dried.

[0127] (7) The polyester fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 550N and the winding speed is the same as the feeding speed.

[0128] (8) Finally, the finished polyester fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → water washing → bleaching → hot water washing → drying, so as to obtain a polyester fabric with antistatic, antibacterial and UV protection functions.

[0129] Example 7 The purpose of this embodiment is to prepare a cotton fabric with three functions: unidirectional moisture wicking, softness, and antibacterial properties.

[0130] The sorting equipment used in this embodiment is the same as that in Embodiment 1.

[0131] The following steps are taken to prepare a three-functional cotton fabric with unidirectional moisture wicking, softness, and antibacterial properties using this finishing equipment: (1) Preparation of functional finishing agent one: Take the triethoxysilyl hydrophobic agent of Example 7 shown in Table 1, dissolve it in 90% ethyl acetate aqueous solution, then add 10M citric acid aqueous solution to adjust pH=6, and ultrasonically stir for 30min to finally prepare functional finishing agent one with a total solute (triethoxysilyl hydrophobic agent) concentration of 1.5wt%.

[0132] (2) Preparation of functional finishing agent II: Take the triazine quaternary ammonium salt antibacterial agent shown in Table 1 in Example 7, dissolve it in deionized water, then add sodium carbonate to adjust pH=8, and ultrasonically stir for 30 min to finally prepare functional finishing agent II with a total solute (triazine quaternary ammonium salt antibacterial agent) concentration of 10.0 wt%.

[0133] (3) Before finishing, the cotton fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0134] (4) Add the functional finishing agent to the brushing component 12 of the functional module 1 of the finishing equipment in this embodiment, adjust the brush nozzle to contact the fabric, set the brushing time to 30s, the temperature to 150℃, the roller pressure to 10kN, and the fabric feeding speed of the cotton fabric to 0.5m / min. The triethoxysilyl hydrophobic agent on the brushed side undergoes thermally initiated chemical grafting with the cotton fiber, thereby constructing a hydrophobic layer on the brushed side of the cotton fabric, while the unbrushed side remains hydrophilic.

[0135] (5) Cotton fabric enters the UV initiation module 2 and is not subjected to UV initiation.

[0136] (6) Add the functional finishing agent II to the second impregnation component 31 of the functional module II 3 of the finishing equipment in this embodiment, and set the impregnation temperature of the functional finishing agent II to 50°C and the impregnation time to 30s.

[0137] (7) The cotton fabric enters the thermal initiation module 4, and the temperature of the hot air generated by the hot air system is set to 170°C, the pressure of the hot rolling rollers of the hot rolling system 43 is 300kN, and the hot rolling temperature is 50°C. The triazine quaternary ammonium salt antibacterial agent undergoes a chemical grafting reaction under thermal initiation, forming a stable and strong covalent bond with the cotton fibers in the cotton fabric.

[0138] (8) The polyester / cotton blended fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 500N and the winding speed is the same as the feeding speed.

[0139] (9) Finally, the finished cotton fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a cotton fabric with one-way moisture-wicking, softness and antibacterial functions.

[0140] Example 8 The sorting equipment used in this embodiment is the same as that in embodiment 4.

[0141] The following steps are taken to prepare unidirectional moisture-wicking and antibacterial nylon fabric using this finishing equipment: (1) Preparation of functional finishing agent one: Take the benzophenone-based haloamine antibacterial agent shown in Table 1 Example 8, dissolve it in dimethyl sulfoxide, then add 5% sodium carbonate aqueous solution to adjust pH=8, and ultrasonically stir for 25 min to finally prepare functional finishing agent one with a total solute (benzophenone-based haloamine antibacterial agent) concentration of 1.0wt%.

[0142] (2) Before finishing, the nylon fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0143] (3) Add the functional finishing agent to the first impregnation component 11 of the functional module 1 of the finishing equipment in this embodiment, set the impregnation temperature of the functional finishing agent to 40°C, the impregnation time to 60s, and the feeding speed of the nylon fabric to 2 m / min.

[0144] (4) The nylon fabric enters the UV initiation module 2, and only one side of the fabric is exposed to UV light for single-sided UV irradiation. The light power is set to 30W / cm and the irradiation time is 1 min. The benzophenone haloamine antibacterial agent undergoes a photochemical grafting reaction on the UV-irradiated side, forming a stable and strong covalent bond with the fibers of the nylon fabric, giving it hydrophobic antibacterial properties on one side. The benzophenone haloamine on the unirradiated side will not chemically graft with the fibers in the nylon fabric, thus maintaining its hydrophilicity.

[0145] (5) No finishing is done on the nylon fabric during the process of functional module 2.3.

[0146] (6) When the nylon fabric passes through the heat initiation module 4, the temperature of the hot air generated by the hot air system is set to 100°C, the pressure of the hot rolling rollers of the hot rolling system 43 is 120 kN, and the hot rolling temperature is 100°C to shape and dry the nylon fabric.

[0147] (7) The nylon fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 450N and the winding speed is the same as the feeding speed.

[0148] (8) Finally, the finished nylon fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain nylon fabric with one-way moisture-wicking and antibacterial functions.

[0149] Example 9 The purpose of this embodiment is to prepare a three-functional linen fabric that is antibacterial, soft, and unidirectionally moisture-wicking.

[0150] The difference between the sorting device used in this embodiment and the sorting device in Embodiment 1 is that: in this embodiment, functional module 1 further includes, for example... Figure 3 The first spraying component 13 shown has its spray nozzles located between the two roller groups of the first brushing component 12; functional module 2 3 also includes, for example, Figure 3 The second brushing component 32 and the second spraying component 33 shown are disposed at the front end of the second immersion component 31, and the spray nozzle of the second spraying component 33 is located between the two roller groups of the second brushing component 32; other structures are the same as the finishing equipment in Embodiment 1.

[0151] The following steps are taken to prepare a three-functional linen fabric with antibacterial, soft, and unidirectional moisture-wicking properties using this finishing equipment: (1) Preparation of functional finishing agent II: Take the triazine quaternary ammonium salt antibacterial agent shown in Table 1 in Example 9, dissolve it in 10% ethyl acetate aqueous solution, then add sodium carbonate to adjust pH=8, and ultrasonically stir for 30 min to finally prepare functional finishing agent II with a total solute (triazine quaternary ammonium salt antibacterial agent) concentration of 0.2wt%.

[0152] (2) Before finishing, the linen fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0153] (3) Linen fabric enters function module 1, and no finishing is done on cotton fabric.

[0154] (4) Linen fabric enters the UV initiation module 2 and is not subjected to UV initiation.

[0155] (5) Add functional finishing agent II to the second brushing component 32 of functional module II 3 of the finishing equipment in this embodiment, adjust the brushing nozzle to contact the fabric, set the brushing time to 30s, the temperature of functional finishing agent II to 120℃, the roller pressure to 10kN, and the feeding speed of the linen fabric to 0.5m / min. The triazine quaternary ammonium salt antibacterial agent on the brushed side undergoes thermally initiated chemical grafting with the linen fiber, thereby constructing an antibacterial and hydrophobic layer on the brushed side of the linen fabric, while the unbrushed side remains hydrophilic.

[0156] (6) When the linen fabric passes through the heat initiation module 4, the temperature of the hot air generated by the hot air system is set to 100℃, the pressure of the hot rolling rollers of the hot rolling system 43 is 300kN, and the hot rolling temperature is 120℃. The unreacted triazine quaternary ammonium salt antibacterial agent in the second brush coating component undergoes a chemical grafting reaction under heat initiation, forming stable and strong covalent bonds with the linen fibers in the linen fabric.

[0157] (7) The linen fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 500N and the winding speed is the same as the feeding speed.

[0158] (8) Finally, the finished linen fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a linen fabric with antibacterial, soft and one-way moisture-wicking functions.

[0159] Example 10 The purpose of this embodiment is to prepare a soft and unidirectional moisture-wicking dual-function cotton fabric.

[0160] The sorting equipment used in this embodiment is the same as that in Embodiment 10.

[0161] The following steps are taken to prepare a soft and unidirectional moisture-wicking dual-function cotton fabric using this finishing equipment: (1) Preparation of functional finishing agent II: Take the triethoxysilyl hydrophobic agent of Example 10 shown in Table 1, dissolve it in 60% ethanol aqueous solution, then add sodium carbonate to adjust pH=8, and ultrasonically stir for 30 min to finally prepare functional finishing agent II with a total solute (triethoxysilyl hydrophobic agent) concentration of 3.0 wt%.

[0162] (2) Before finishing, the cotton fabric is pretreated to completely clean the adhesive on the surface of the fabric. The cleaning steps are: boiling → washing → acid washing → washing → neutralization → washing → bleaching → hot water washing → drying.

[0163] (3) Cotton fabric enters function module 1 and no finishing is done on the cotton fabric.

[0164] (4) The cotton fabric enters the UV initiation module 2 and is not subjected to UV initiation.

[0165] (5) Add the second functional finishing agent to the second spray component 33 of the finishing equipment functional module 3 in this embodiment, adjust the distance between the spray nozzle and the fabric, set the spraying time to 3s, the temperature to 100℃, and the fabric feeding speed of the cotton fabric to 0.5m / min. Part of the triethoxysilane hydrophobic agent on the sprayed side undergoes thermally initiated chemical grafting with the cotton fibers, thereby constructing an antibacterial and hydrophobic layer on the cotton fabric by brush spraying, while the unsprayed side remains hydrophilic.

[0166] (6) When the cotton fabric passes through the heat initiation module 4, the temperature of the hot air generated by the hot air system is set to 100°C, the pressure of the hot rolling rollers of the hot rolling system 43 is 10kN, and the hot rolling temperature is 150°C. The unreacted triethoxysilyl hydrophobic agent in the second spray component 33 undergoes a chemical grafting reaction under heat initiation, forming stable and strong covalent bonds with the cotton fibers in the cotton fabric.

[0167] (7) The cotton fabric is recycled through the stretching module 5 and the winding module 6. The stretching force is 500N and the winding speed is the same as the feeding speed.

[0168] (8) Finally, the finished cotton fabric is post-treated to completely remove the residual finishing agent from the fabric. The post-treatment steps include: neutralization → washing → bleaching → hot water washing → drying, so as to obtain a cotton fabric with softness and one-way moisture-wicking dual functions.

[0169] The antibacterial effects of the fabrics prepared in Examples 1-10 were tested, and the results are shown in Table 2 below.

[0170] Table 2 Antibacterial properties of the fabric (%) Note The antibacterial rate test standard in this invention is GB / T 20944.3-2008 (Evaluation of antibacterial properties of textiles - Part 3: Vibration method), and the test method is the vibration method. Unfinished polyester fabric is used as the control fabric instead of the standard fabric, so its antibacterial rate is defined as 0.

[0171] The transient hydrophilicity and hydrophobicity of the fabrics prepared in Examples 1-10 were tested, and the results are shown in Table 3 below.

[0172] Table 3. Fabric contact angles for Examples 1-10 NoteIn Examples 1 to 4, 7, 9 to 10, the A side of the obtained functional textile fabric is hydrophilic and the B side is hydrophobic; in Examples 5 and 6, both the A side and the B side of the obtained functional textile fabric are hydrophilic; in Example 8, both the A side and the B side of the obtained functional textile fabric are hydrophobic.

[0173] The moisture absorption and quick-drying properties of the functional fabric prepared in Example 7 from side B to side A were evaluated, and the results are shown in Table 4 below.

[0174] Table 4. Moisture absorption and quick-drying properties of the multifunctional fabric in Example 7 Note Test standard GB / T 21655.2-2019 (Evaluation of the moisture absorption and quick-drying properties of textiles - Part 2: Dynamic moisture transfer method).

[0175] As shown in Table 4, according to the evaluation criteria in GB / T 21655.2-2019, the performance evaluation of the functional fabric from side B to side A in Example 7 is: it has moisture-wicking properties. Furthermore, the unidirectional transfer index from side B to side A is as high as 928.9, while the unidirectional transfer index from side A to side B is -528.5, indicating that the functional fabric in Example 7 has excellent unidirectional moisture-wicking ability and reverse liquid transfer ability, enabling it to quickly transfer liquid from the hydrophobic side to the hydrophilic side.

[0176] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0177] The above description describes specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0178] In this invention, benzophenone-based functional finishing agents undergo chemical covalent bonding with polyester, nylon, polypropylene, and vinylon fabrics under ultraviolet light (where R1 and R2 are hydrophilic, antibacterial, softening, or flame-retardant groups). The main principle is that the ketone group in the benzophenone group undergoes a typical "photochemical hydrogen abstraction" reaction with the methylene groups in polyester, nylon, polypropylene, and vinylon under ultraviolet light, forming covalent bonds on the fabric surface. 1. Photoexcitation process: BP absorbs UV light → singlet state → intersystem crossing → highly active triplet state; 2. Hydrogen atom abstraction: The triplet benzophenone group abstracts hydrogen atoms from the CH bonds on the surface of synthetic fibers such as polyester, nylon, polypropylene, and vinylon, forming benzophenone free radicals and free radicals on the surface of synthetic fibers such as polyester, nylon, polypropylene, and vinylon. 3. Covalent bond formation: Two free radicals couple → C C covalent bond, anchoring the benzophenone group molecule to the surface of synthetic fibers such as polyester, nylon, polypropylene, and vinylon.

[0179] The illustration is as follows; .

[0180] In this invention, the triazine functional finishing agent forms chemical covalent bonds with natural fiber (cotton, linen, wool, silk, etc.) fabrics under heat initiation, specifically with the hydroxyl, amino, carboxyl, and thiol groups of the natural fibers (where R1 and R2 are hydrophobic, antibacterial, softening, or flame-retardant groups). The schematic diagram is as follows: .

[0181] The chemical covalent bonding between the siloxane functional finishing agent and natural fiber (cotton, linen, wool, silk, etc.) fabric under thermal initiation in this invention (where R1 and R2 are hydrophobic groups, antibacterial groups, softening groups, or flame-retardant groups) is illustrated below: .

[0182] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for preparing a functional fabric, characterized in that, Includes the following steps: A functional finishing agent capable of undergoing a UV-initiated reaction is applied to the surface of a synthetic fiber fabric or a synthetic / natural fiber blend fabric, and then the fabric with the functional finishing agent is irradiated with UV light, initiating a chemical grafting reaction between the functional finishing agent and the carbon-hydrogen bonds of the fabric fibers; and / or, A heat-initiated functional finishing agent is applied to the surface of a natural fiber fabric or a natural / synthetic fiber blended fabric, and then the fabric with the functional finishing agent is heated to initiate a chemical grafting reaction between the functional finishing agent and the hydroxyl, amino, carboxyl, and thiol groups of the natural fiber. The functional finishing agent includes a functional compound, which is selected from at least one of hydrophilic finishing agents, hydrophobic finishing agents, antibacterial finishing agents, softening finishing agents, or flame retardant finishing agents. The hydrophilic finishing agent is a compound having the general formula (Ⅰ): （Ⅰ）； In general formula (Ⅰ), R1 and R2 are hydrophilic groups, independently selected from one or more combinations of sulfonic acid group, sulfonate, sulfate, carboxylic acid group, carboxylic acid group, phosphate group, phosphate, quaternary ammonium salt, quaternary phosphonium salt, sulfonate betaine, phosphate betaine, carboxylic betaine, hydroxyl group, and amino group; The hydrophobic finishing agent is a compound having the general formula (II): （Ⅱ）； In general formula (II), R1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride or carboxyl; R2 is selected from long-chain alkanes or hydrophobic groups of fluoroalkanes, preferably C1-C18 alkyl, more preferably C1, C2, C3, C4, C6, C8, C10, C12, C14, C16 or C18 alkyl; The antibacterial finishing agent is a compound having general formula (III) or (IV): （Ⅲ）； In general formula (Ⅲ), Y1 and Y2 are groups with antibacterial properties, independently selected from one or more combinations of quaternary ammonium salt cations, N-haloamines, guanidinyl groups, and amino groups; （Ⅳ）； In general formula (Ⅳ), Y1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride or carboxyl; Y2 is a group with antibacterial properties selected from one or more combinations of quaternary ammonium salt cation, N-haloamine, guanidine; The softening agent is a compound having the general formula (V) or (VI): （Ⅴ）； In general formula (V), Y1 and Y2 are groups with soft properties, preferably one or more combinations of cationic groups, nonionic groups, anionic groups, and siloxane groups; the cationic groups are preferably quaternary ammonium salt type, imidazole type, or guanidine salt type groups; the nonionic groups are preferably polyether type, polyol ester type, or alkanolamide type groups; the anionic groups are preferably fatty acid soap / salt type or sulfonate type groups; the siloxane groups are preferably amino-modified silicone oil, epoxy-modified silicone oil, polyether-modified silicone oil, or methyl silicone oil groups; （Ⅵ）； In general formula (VI), Y1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride, or carboxyl groups; Y2 is a group with soft properties, preferably one or more combinations of cationic, nonionic, anionic, and siloxane groups; the cationic group is preferably a quaternary ammonium salt, imidazole, or guanidine salt group; the nonionic group is preferably a polyether, polyol ester, or alkanolamide group; the anionic group is preferably a fatty acid soap / salt or sulfonate group; and the siloxane group is preferably an amino-modified silicone oil, epoxy-modified silicone oil, polyether-modified silicone oil, or methyl silicone oil group. The flame retardant finishing agent is a compound having the general formula (VII) or (VIII): （Ⅶ）； In general formula (VII), Y1 and Y2 are flame-retardant groups, independently selected from one or more combinations of phosphorus-based, halogen-based, nitrogen-based, and silicon-based flame-retardant groups; （Ⅷ）； In general formula (VIII), Y1 is an active group selected from siloxane, epoxy, isocyanate, cyanuric chloride, or carboxyl groups; Y2 is a group with flame retardant properties selected from one or more combinations of phosphorus-based, halogen-based, nitrogen-based, and silicon-based flame retardant groups.

2. The method for preparing functional fabrics according to claim 1, characterized in that, The hydrophilic finishing agent is selected from compounds of formula (I-1) or (I-2): （Ⅰ-1）； （Ⅰ-2）； The hydrophobic finishing agent is selected from compounds having the following general formula (II-1): （Ⅱ-1）； In general formula (Ⅱ-1), n ​​is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16 or 18; The antimicrobial finishing agent is selected from compounds having the following general formulas (Ⅲ-1), (Ⅲ-2), (Ⅲ-3), or (Ⅲ-4): （Ⅲ-1）； In general formula (Ⅲ-1), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; （Ⅲ-2）； In general formula (Ⅲ-2), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18. （Ⅲ-3）； In general formula (Ⅲ-3), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18. （Ⅲ-4）； In general formula (Ⅲ-4), X is a halogenated element, preferably Cl, Br, or I; n is an integer from 0 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18; m is an integer from 1 to 18, preferably 1, 2, 3, 6, 8, 10, 12, 14, 16, or 18.

3. The method for preparing functional fabrics according to claim 1, characterized in that, The content of the functional compound in the functional finishing agent is more than 0.1 wt%, preferably 0.1-15 wt%, and more preferably 0.2 wt%, 0.5 wt%, 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, and 5.0 wt%.

4. The method for preparing functional fabrics according to claim 1, characterized in that, The functional finishing agent further includes one or more combinations of solvent, pH adjuster, and surfactant; the solvent is selected from one or more combinations of water, methanol, ethanol, dimethyl sulfoxide, dichloromethane, chloroform, tetrachloromethane, ether, ketone, ester, nitrile, amide, and aromatic compounds; the pH adjuster is selected from at least one of organic acids or Lewis bases; the surfactant is selected from at least one of stearic acid, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium dodecyl carboxylate, sodium hexadecyl sulfonate, sodium hexadecyl carboxylate, sodium hexadecyl sulfate, sodium octadecyl sulfonate, lecithin, or fatty acid glycerides.

5. The method for preparing functional fabrics according to claim 4, characterized in that, The ether is selected from tetrahydrofuran, 1,4-dioxane, ethylene glycol dimethyl ether, and combinations thereof; the ketone is selected from acetone, methyl ethyl ketone, cyclohexanone, acetophenone, phorone, and combinations thereof; the aromatic compound is selected from toluene, pyridine, imidazole, and combinations thereof; the ester is selected from ethyl acetate, n-butyl acetate, n-propyl acetate, ethyl formate, methyl formate, and combinations thereof; the nitrile is selected from acetonitrile, propionitrile, benzonitrile, and combinations thereof; the amide is selected from N,N-dimethylacetamide, N,N-dimethylformamide, N,N-dimethylpyrrolidone, and combinations thereof.

6. The method for preparing functional fabrics according to claim 1, characterized in that, The wavelength of the ultraviolet light is in the range of 200-420 nm, preferably 254 nm, 320 nm, 365 nm, or 400 nm; the irradiation time is in the range of 1-360 s, preferably 10 s, 20 s, 30 s, 40 s, 60 s, 100 s, 180 s, 240 s, 300 s, or 360 s. The heating process employs hot rolling and / or hot air to initiate a chemical grafting reaction between the functional finishing agent and the fabric fibers; the hot rolling temperature is 25-300℃, preferably 25℃, 30℃, 50℃, 80℃, 100℃, 120℃, 150℃, 180℃, 200℃, or 250℃; the hot rolling pressure is 1-500kN, preferably 5kN, 10kN, 50kN, 100kN, 200kN, 300kN, or 400kN; the hot air temperature is 25-200℃, preferably 50℃, 100℃, 150℃, or 180℃; the heating time is 1-300s, preferably 10s, 30s, 40s, 60s, 100s, 180s, 240s, or 300s.

7. The method for preparing functional fabrics according to claim 1, characterized in that, The functional finishing agent is applied to the fabric surface by impregnation, brushing, or spraying.

8. A finishing apparatus, applicable to the preparation method described in claims 1-7, characterized in that, It includes functional module one, ultraviolet light initiation module, functional module two and thermal initiation module arranged sequentially along the fabric travel direction; Both functional module one and functional module two include at least one of immersion component, brushing component, and spraying component; The ultraviolet light initiation module includes ultraviolet light irradiation systems located on both sides of the fabric, and the ultraviolet light irradiation systems on both sides can be independently controlled to be turned on or off. The thermal initiation module includes a hot rolling system, a hot air system, and a constant temperature control system. The hot rolling system and the hot air system can operate independently or in combination. The first functional module is used to apply a functional finishing agent that can undergo an ultraviolet light-initiated reaction to the fabric surface; the ultraviolet light initiation module is used to irradiate the functional finishing agent applied to the fabric surface by the first functional module with ultraviolet light; the second functional module is used to apply a functional finishing agent that can undergo a heat-initiated reaction to the fabric surface; the heat initiation module is used to heat the functional finishing agent applied to the fabric surface by the second functional module.

9. The sorting device according to claim 8, characterized in that, The impregnation component, brushing component, and spraying component are all equipped with a constant temperature heating system; the constant temperature heating system is used to heat the fabric with the applied functional finishing agent to 25-300℃, preferably 30℃, 45℃, 60℃, 80℃, 100℃, 120℃, 150℃, 180℃, 200℃, and 250℃.

10. The sorting device according to claim 8, characterized in that, It also includes a stretching module and a winding module arranged sequentially along the fabric travel direction; The stretching module is located at the rear end of the heat initiation module and is used to stretch and shape the fabric. The winding module is located at the rear end of the stretching module and is used to wind up the finished fabric.

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