Modified gingerol-containing multifunctional polyester fiber and preparation method thereof

Abstract

The invention discloses a multifunctional polyester fiber based on modification and containing gingerol and a preparation method thereof, and relates to the technical field of fiber materials, the multifunctional polyester fiber comprises the following raw materials by weight: 400-550 parts of polyester chips, 100-160 parts of multifunctional polyester masterbatch, 3-7 parts of a dispersing aid, 2-5 parts of an antistatic agent, and 1-3 parts of an antioxidant stabilizer; the preparation is performed based on the raw materials. Polyester chips and multifunctional polyester master batches prepared through a special process are mixed according to a specific proportion, a dispersing aid, an antistatic agent and an antioxidant stabilizer are matched, and the multifunctional polyester fiber based on modification and containing gingerol is prepared through an optimized melt spinning process. According to the method, the dispersity and the interface bonding force of the gingerol in the polyester are remarkably improved, the high temperature resistance and the washability of functional components are improved, the fibers have lasting antibacterial, warm and antistatic properties while maintaining excellent mechanical properties, and the performance requirements of long-term use of high-end warm-keeping textiles are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber materials, in particular to a modified gingerol-containing multifunctional polyester fiber and a preparation method thereof. BACKGROUND

[0002] Ginger warm cloud wool is a functional fiber product that combines the active ingredients of natural ginger with chemical fiber materials. Its core is to use the natural bacteriostatic, microcirculation promoting and warming effect of gingerol to give textiles health and comfort performance. Traditional gingerol functional fibers usually use surface coating or simple blending methods to mix gingerol microcapsules or powders into polyester. However, such methods have problems such as easy degradation of functional components in high-temperature spinning process, insufficient bonding force with polyester matrix, easy migration or loss during use, etc., which makes it difficult to balance the wash resistance, functional durability and mechanical properties of the fiber. In addition, gingerol molecules have strong polarity and poor dispersibility in non-polar polyester matrix, which easily causes agglomeration, further affecting the uniformity and processing stability of the fiber.

[0003] Existing gingerol functional polyester fibers mostly rely on surface modification or direct blending process: Poor durability of functional components: gingerol is easily volatile or decomposed in the high-temperature environment of polyester spinning, and the functional performance of coated fibers decreases significantly after repeated washing.

[0004] Insufficient interfacial compatibility: gingerol and polyester matrix have large polarity difference, lack effective chemical bonding means, resulting in uneven dispersion and unstable fiber performance. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a modified gingerol-containing multifunctional polyester fiber and a preparation method thereof to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The present application provides a modified gingerol-containing multifunctional polyester fiber, which comprises the following raw materials by weight: 400-550 parts of polyester chips; 100-160 parts of multifunctional polyester masterbatch; the multifunctional polyester masterbatch is obtained by granulating the polyaniline modified gingerol powder after multifunctionalization and coating with a coating material on the polyester chips; 3-7 parts of a dispersing aid; 2-5 parts of an antistatic agent; 1-3 parts of an antioxidant stabilizer.

[0007] Further optimization of the technical solution, the polyaniline modified gingerol powder, the specific preparation steps are as follows: Fresh ginger is washed, peeled, and sliced, and then dried at 60°C with hot air until the moisture content is less than 5%, and then ground into ginger powder; The ginger powder is placed in an ethanol-water mixed solvent, and gingerol is extracted under ultrasonic conditions. The gingerol crude product is obtained by concentration under reduced pressure. The gingerol crude product is added to deionized water, and a high-speed shearing emulsifier is used to disperse it into a nano gingerol dispersion liquid. In the reaction kettle, aniline monomer and polyaniline dopant are sequentially added to the nano gingerol dispersion liquid, mechanical stirring is started, and the temperature is lowered to 10-15°C under ice water bath conditions. Then, the catalyst is added, and the reaction temperature is controlled to be no higher than 35°C, and the reaction is carried out for 3-4 hours. After the reaction is completed, centrifugal separation, water washing to neutral, and vacuum drying are performed to obtain polyaniline modified gingerol powder.

[0008] Further optimization of the technical solution, the particle size of the nano gingerol dispersion liquid is 50-100 nm; the polyaniline dopant is phosphoric acid; and the catalyst is ammonium persulfate or sodium periodate.

[0009] Further optimization of the technical solution, the multifunctionalization of the polyaniline modified gingerol powder is as follows: The polyaniline modified gingerol powder is dispersed in a mixed solvent composed of chloroform, dichloromethane, and tetrahydrofuran at a mass ratio of 1:10, and is dispersed under ultrasonic wave action for 15-20 minutes to obtain a stable suspension. The suspension is transferred to a reactor with a condensation reflux device, and phosphorus oxychloride, p-hydroxyphenethyl alcohol, and methanol are sequentially added under nitrogen protection. The reaction temperature is maintained at 10-35°C, the stirring rate is controlled at 300-500 rpm, and the reaction time is 2-3 hours. After the reaction is completed, the mixture is slowly poured into anhydrous ethanol to precipitate the product, which is centrifugally separated and washed with anhydrous ethanol for 2-3 times to remove unreacted substances and byproducts. Finally, vacuum drying is carried out at 50-60°C for 6-8 hours to obtain the multifunctionalized polyaniline modified gingerol powder.

[0010] Further optimization of the technical solution, the molar ratio of the polyaniline modified gingerol powder, phosphorus oxychloride, p-hydroxyphenethyl alcohol, and methanol is controlled to be 3-3.5:1:2-2.2:0.5-1.

[0011] Further optimization of the technical solution, the solvent temperature is stabilized by a circulating cooling system during the reaction process of the suspension to prevent local overheating and degradation of the gingerol structure; At the same time, the oxygen content is controlled to be less than 0.5% under a nitrogen atmosphere to inhibit the oxidation and inactivation of gingerol and polyaniline layers.

[0012] Further optimize the technical solution, the coating material, the preparation steps are as follows: The high-temperature-resistant silicone resin, fluorine-containing polymer and heat-resistant polyimide powder are weighed and mixed in a mass ratio of 5:3:2, and placed in a sealed stirred kettle, and pre-mixed at 80-100 DEG C for 2 hours; After the mixture is cooled to room temperature, the coupling accelerator and the molecular tide activator are added, the molecular tide treatment device is started, the coating material is placed in a micro-amplitude periodic pressure and temperature fluctuation environment, the frequency is controlled at 0.5-2Hz, and the treatment is continued for 1-1.5 hours to form the coating material.

[0013] Further optimize the technical solution, the coating material and the multifunctional polyaniline modified gingerol powder and polyester chip are uniformly mixed, and a dense and chemical bond protective layer is formed on the surface of the polyester chip, and after the coating is completed, the multifunctional polyester master batch is obtained by vacuum drying at 80 DEG C for 4 hours.

[0014] A preparation method of modified multifunctional polyester fiber containing gingerol, based on the above-mentioned modified multifunctional polyester fiber containing gingerol, comprising the following specific steps: S1, the polyester chip, the multifunctional polyester master batch and the dispersing agent, the antistatic agent and the antioxidant stabilizer are weighed according to the weight fraction, and pre-dried and mixed; S2, the dried raw materials are uniformly mixed and fed into the spinning extruder under sealed conditions; S3, the raw materials are melt plasticized, filtered and metered; S4, through jet forming, cooling and shaping, and electrostatic control treatment in the forming process; S5, the nascent silk is drawn and heat set; S6, oiling, winding and forming are completed, and storage and packaging are carried out.

[0015] Compared with the prior art, the present application provides a modified multifunctional polyester fiber containing gingerol and a preparation method thereof, which has the following beneficial effects: The modified multifunctional polyester fiber containing gingerol and the preparation method thereof, by mixing the polyester chip with the multifunctional polyester master batch (containing polyaniline modified gingerol, high-temperature-resistant molecular tide coating structure) prepared by special process in a certain proportion, and cooperating with dispersing agent, antistatic agent and antioxidant stabilizer, the modified multifunctional polyester fiber containing gingerol is prepared by optimized melt spinning process. This method significantly improves the dispersibility and interfacial bonding force of gingerol in polyester, improves the high-temperature resistance and wash resistance of functional components, so that the fiber has excellent mechanical properties and has long-lasting antibacterial, warm and antistatic properties, which meets the performance requirements of high-end thermal textiles for long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 A flowchart of a preparation method of a modified gingerol-containing multifunctional polyester fiber is provided. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0019] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other ways different from those described herein without departing from the scope of the present application, and those skilled in the art can make similar extensions without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0020] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor does it mean an embodiment that is separate or selectively excluded from other embodiments.

[0021] A modified gingerol-containing multifunctional polyester fiber includes the following raw materials by weight: 400-550 parts of polyester chips, selected from fiber-grade polyethylene terephthalate (PET) chips, such as Yisheng Petrochemical fiber-grade PET chip model FGT-001.

[0022] 3-7 parts of a dispersing aid, selected from polyethylene glycol monostearate (PEG-40 Stearate), a conventional dispersant on the market, used to improve the uniform dispersibility of polyaniline-modified gingerol in the polyester matrix and avoid agglomeration.

[0023] 2-5 parts of an antistatic agent, selected from a quaternary ammonium salt type antistatic agent, such as BASF LAROSTAT 264A. In cooperation with polyaniline, further enhance the durability of antistatic.

[0024] 1-3 parts of an antioxidant stabilizer, selected from a hindered phenolic antioxidant, such as Irganox 1010 (BASF Irga). Inhibit the oxidative degradation of polyester and functional molecules during processing and use.

[0025] 100-160 parts of multifunctional polyester masterbatch.

[0026] The multifunctional polyester masterbatch is obtained by coating the multifunctional polyphenylamine modified gingerol powder with a coating material and then granulating the polyester chips.

[0027] Further, the polyphenylamine modified gingerol powder is prepared according to the following steps: Fresh ginger is washed, peeled, and sliced, and then dried at 60°C to a moisture content of less than 5%. The ginger slices are ground into ginger powder. The ginger powder is placed in an ethanol-water mixed solvent, and gingerol is extracted under ultrasonic conditions. The gingerol crude product is obtained by vacuum concentration. The gingerol crude product is added to deionized water, and a high-speed shearing emulsifier is used to disperse the gingerol into a nano gingerol dispersion with a particle size of 50-100 nm. Aniline monomer and polyphenylamine dopant (phosphoric acid) are sequentially added to the nano gingerol dispersion in a reaction kettle, mechanical stirring is started, and the temperature is lowered to 10-15°C in an ice water bath. Then, a catalyst (ammonium persulfate or sodium periodate) is added, the reaction temperature is controlled to be not higher than 35°C, and the reaction is carried out for 3-4 hours. After the reaction is completed, centrifugal separation, water washing to neutral, and vacuum drying are performed to obtain the polyphenylamine modified gingerol powder. The powder has a high active amino content and good conductivity, and the polyphenylamine coating layer formed on the surface has excellent interfacial bonding ability for subsequent modification reactions.

[0028] Further, the multifunctional polyphenylamine modified gingerol powder is prepared according to the following steps: The polyphenylamine modified gingerol powder is dispersed in a mixed solvent of trichloromethane, dichloromethane, and tetrahydrofuran at a mass ratio of 1:10 under ultrasonic conditions for 15-20 minutes to obtain a stable suspension. The suspension is transferred to a reactor with a condensation reflux device, and phosphorus oxychloride, p-hydroxyphenethyl alcohol, and methanol are sequentially added under nitrogen protection (the molar ratio of the three is controlled to be 3-3.5:1:2-2.2:0.5-1). The reaction temperature is maintained at 10-35°C, the stirring rate is controlled at 300-500 rpm, and the reaction time is 2-3 hours. A circulating cooling system is used to stabilize the solvent temperature to prevent local overheating and degradation of the gingerol structure. The oxygen content is controlled to be less than 0.5% under a nitrogen atmosphere to inhibit the oxidation and deactivation of gingerol and the polyphenylamine layer. After the reaction is completed, the mixture is slowly poured into anhydrous ethanol to precipitate the product, which is centrifugally separated and washed with anhydrous ethanol for 2-3 times to remove unreacted substances and byproducts. Finally, vacuum drying is performed at 50-60°C for 6-8 hours to obtain the multifunctional polyphenylamine modified gingerol powder. The surface contains multiple functional groups such as amino, hydroxyl, and ester groups, which can significantly improve the chemical compatibility and interfacial bonding force with the polyester matrix, and maintain high thermal stability and functional durability during fiber forming.

[0029] Further, the coating material, specifically the preparation steps are as follows: The high-temperature-resistant silicone resin, fluorine-containing polymer and heat-resistant polyimide powder are weighed according to the mass ratio of 5:3:2, mixed and placed in a sealed stirred tank, and pre-mixed at 80-100°C for 2 hours to ensure uniform dispersion of each component. After cooling the mixture to room temperature, add coupling promoters (such as aminopropyl triethoxysilane) and molecular tide activators (such as low-molecular-weight organic acid salts), start the molecular tide processing device, and place the coating material in a micro-amplitude periodic pressure and temperature fluctuation environment, with a frequency control of 0.5-2Hz, and a continuous processing time of 1-1.5 hours, to promote the dynamic "tide" movement of the material molecular chain in the surface activation state, and form a coating material. The coating material is uniformly mixed with the multifunctional polyaniline modified gingerol powder and polyester chip, and a dense and chemically bonded protective layer is formed on the surface of the polyester chip. After coating, vacuum drying at 80°C for 4 hours, multifunctional polyester pellets with dense surface, high temperature resistance of 280°C and low migration are obtained. This technology not only improves the heat resistance and stability of functional molecules, but also significantly prolongs the service life of the fiber.

[0030] Reference Figure 1 A preparation method based on modified gingerol-containing multifunctional polyester fiber, based on the above-mentioned modified gingerol-containing multifunctional polyester fiber, comprising the following specific steps: S1, the polyester chip, multifunctional polyester pellets and dispersing agent, antistatic agent and antioxidant stabilizer are weighed according to the weight fraction, pre-dried and mixed.

[0031] The polyester chip and multifunctional polyester pellets are dried at 110-120°C for 8-10h, and nitrogen is continuously introduced to form an inert atmosphere, with an online oxygen content of ≤0.5%, so that the system moisture content is ≤50ppm, preventing hydrolysis and oxidation of functional components during melting.

[0032] S2, the dried raw materials are uniformly mixed and fed into the spinning extruder under sealed conditions.

[0033] The polyester chip, multifunctional polyester pellets, dispersing agent, antistatic agent and antioxidant stabilizer are added in a sealed high-speed mixer in sequence, and dry mixed at 300-500rpm for 20-30min to ensure uniformity (take 3 samples to measure ash content and resistivity RSD ≤5%). The mixed material is directly conveyed to the hopper of the spinning extruder through a sealed pipeline, and the hopper and feeding pipeline are kept at 80-90°C to avoid condensation and moisture absorption; the hopper is nitrogen sealed, with a dew point of ≤-30°C.

[0034] S3, melt plasticization, filtration and metering of the raw materials.

[0035] The temperature of each zone of the extruder is controlled from front to back at 255-275-280-280°C, and the melt residence time is ≤6 min; a 20-40 μm melt filter assembly is used, and the single pressure drop is ≥8 MPa, i.e. the filter bag is replaced, to ensure that impurities and microgels are intercepted. The pulsation of the metering pump is ≤0.2% FS, and the water content of the melt is continuously <30 ppm (monitored by an online near-infrared moisture meter). The spinneret assembly is preheated to 275-278°C and kept at a constant temperature of ±0.5°C, to ensure uniform transport of the multifunctional components in the melt and stable fiber formation.

[0036] S4, by means of jet forming, cooling and setting, and electrostatic control treatment during the forming process.

[0037] After the melt is formed by the spinneret, it enters a cross-flow cold air zone, the cooling air temperature is 18-22°C, the air speed is 0.3-0.6 m / s, and the dew point is ≤10°C; an ion neutralization device is arranged below the spinneret port, to ensure that the absolute value of the surface potential of the fiber is ≤0.8 kV (protective measure 2), and to inhibit the accumulation of static electricity and flying fibers caused by the conductive function during the high-speed forming stage. The nascent fiber is oiled, and the oiling rate is 0.3-0.6%, to ensure the stability of subsequent drafting and the bundling of the fiber.

[0038] S5, the nascent fiber is drafted and heat set.

[0039] The nascent fiber is drafted by two heat rollers, the first heat roller temperature is 80-90°C, the second heat roller temperature is 95-105°C, and the total draft ratio is 2.0-3.0 times; then it enters a heat setting furnace, the setting temperature is 150-170°C, and the time is 30-60 s. A micro-positive pressure inert gas atmosphere (nitrogen or argon) is maintained in the setting furnace at 0.3-0.5 MPa, and the oxygen content is ≤0.5% (protective measure 3), to inhibit the migration of functional components to the surface and the thermal oxidation of the polyester main chain, and to improve the dimensional stability and functional retention rate.

[0040] S6, oiling, winding and forming are completed, and storage and packaging are carried out.

[0041] After setting, the final oiling (oiling rate 0.5-0.8%) is carried out to improve the weaving and friction performance; winding and forming are carried out at a speed of 2800-3200 m / min. The finished product should be stored under the conditions of 15-25°C and relative humidity of 40-60%, to avoid direct light and high ozone environment; a low-dust desiccant is added in the package, and a moisture-proof composite film is used, and the target dew point in the package is ≤-20°C.

[0042] Example 1, based on the following raw materials, a modified gingerol-containing multifunctional polyester fiber is prepared: 500 parts of polyester chips; 120 parts of multifunctional polyester masterbatch; 5 parts of dispersing aid; 3 parts of antistatic agent; 2 parts of antioxidant stabilizer.

[0043] Example 2, based on the following raw materials, preparation of modified gingerol-containing multifunctional polyester fiber: 450 parts of polyester chips; 150 parts of multifunctional polyester masterbatch; 6 parts of dispersing aid; 4 parts of antistatic agent; 2 parts of antioxidant stabilizer.

[0044] Example 3, based on the following raw materials, preparation of modified gingerol-containing multifunctional polyester fiber: 520 parts of polyester chips; 110 parts of multifunctional polyester masterbatch; 4 parts of dispersing aid; 2 parts of antistatic agent; 1 part of antioxidant stabilizer.

[0045] Comparative Example 1 (without multifunctional polyester masterbatch), based on the following raw materials, preparation of modified gingerol-containing multifunctional polyester fiber: 620 parts of polyester chips; 0 parts of multifunctional polyester masterbatch; 5 parts of dispersing aid; 3 parts of antistatic agent; 2 parts of antioxidant stabilizer.

[0046] Comparative Example 2 (without dispersing aid), based on the following raw materials, preparation of modified gingerol-containing multifunctional polyester fiber: 540 parts of polyester chips; 100 parts of multifunctional polyester masterbatch; 0 parts of dispersing aid; 2 parts of antistatic agent; 1 part of antioxidant stabilizer.

[0047] Based on the above examples and comparative examples, a number of tests were conducted as shown in Table 1.

[0048] Table 1

[0049] As shown by the results in Table 1: Examples 1-3 are significantly superior to the comparative examples in terms of initial volume resistivity and antistatic half-life, and the resistivity increases less after 20 washes, with a bacteriostatic retention rate of ≥85%, reflecting the synergistic stabilizing effect of the multifunctional polyester masterbatch and the dispersing aid. Comparative Example 1 lacks multifunctional polyester masterbatch, resulting in significantly insufficient conductivity and bacteriostatic performance; Comparative Example 2 lacks a dispersing aid, resulting in uneven conductivity and significant performance degradation after washing.

[0050] Example 2 has a breaking strength of 4.2 cN / dtex and a thermal shrinkage rate of ≤4.3% due to the higher multifunctional polyester masterbatch and sufficient dispersion, which is superior to the comparative examples; Examples 1 and 3 maintain a breaking strength of 3.9-4.0 cN / dtex while balancing hand feeling and color fastness.

[0051] The hand feeling score of Examples 1-3 is all ≥4.4 points, and the color change gray level is ≥4 levels, meeting the appearance and comfort requirements of "Jiang Nuan Yun Rong" in close-fitting warm textiles.

[0052] Conclusion: multifunctional polyester masterbatch is the key to realize persistent conductivity and antibacterial; dispersing aids can ensure the uniform distribution of functional phase in polyester matrix and reduce washing attenuation. The absence of any element will cause significant decline or uneven function, verifying the rationality and necessity of the formula and process.

[0053] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A modified multifunctional polyester fiber containing gingerol, characterized in that: It includes the following raw materials in parts by weight: 400–550 polyester chips; 100–160 parts of multifunctional polyester masterbatch; the multifunctional polyester masterbatch is obtained by multifunctionalizing polyaniline-modified gingerol powder and coating it with a coating material on polyester chips before granulation; 3–7 parts dispersing aid; 2–5 parts antistatic agent; 1–3 parts antioxidant stabilizer.

2. The modified multifunctional polyester fiber containing gingerol according to claim 1, characterized in that: The polyaniline modified gingerol powder is specifically prepared in the following steps: Take fresh ginger, wash, peel and slice it, dry it in hot air at 60℃ until the moisture content is less than 5%, and grind it into ginger powder; The ginger powder is placed in an ethanol-water mixed solvent, gingerol is extracted under ultrasonic conditions, and the crude gingerol is obtained by concentrating under reduced pressure. The crude gingerol was added into deionized water and dispersed into nano gingerol dispersion using a high-speed shear emulsifier; Aniline monomer and polyaniline dopant were added to the nano-gingerol dispersion in sequence in a reactor, mechanical stirring was started, and the mixture was cooled to 10–15°C in an ice-water bath. Then, the catalyst was added, the reaction temperature was controlled not to exceed 35°C, and the reaction was continued for 3–4 hours; After the reaction is completed, the mixture is centrifuged, washed with water until neutral, and vacuum dried to obtain polyaniline-modified gingerol powder.

3. The modified multifunctional polyester fiber containing gingerol according to claim 2, characterized in that: The particle size of the nano gingerol dispersion is 50-100 nm; the polyaniline dopant is phosphoric acid; and the catalyst is ammonium persulfate or sodium periodate.

4. The modified multifunctional polyester fiber containing gingerol according to claim 1, characterized in that: The polyaniline-modified gingerol powder is multifunctionalized, and the specific steps are as follows: The polyaniline-modified gingerol powder was dispersed in a mixed solvent of chloroform, dichloromethane, and tetrahydrofuran at a mass ratio of 1:10 and dispersed under ultrasonication for 15–20 minutes to obtain a stable suspension. Transfer the suspension to a reactor equipped with a condenser reflux device, and add phosphorus oxychloride, p-hydroxyphenylethanol, and methanol in sequence under nitrogen protection. Maintain the reaction temperature at 10–35°C, control the stirring rate at 300–500 rpm, and react for 2–3 hours. After the reaction is completed, the mixture is slowly poured into anhydrous ethanol to precipitate the product, which is then centrifuged and washed 2–3 times with anhydrous ethanol to remove unreacted substances and by-products. Finally, the multifunctional polyaniline-modified gingerol powder was obtained by vacuum drying at 50–60°C for 6–8 hours.

5. The modified multifunctional polyester fiber containing gingerol according to claim 4, characterized in that: The molar ratio of the polyaniline-modified gingerol powder, phosphorus oxychloride, p-hydroxyphenylethanol and methanol is controlled to be 3-3.5:1:2-2.2:0.5-1 for polyaniline-modified gingerol powder:phosphorus oxychloride:p-hydroxyphenylethanol:methanol.

6. The modified multifunctional polyester fiber containing gingerol according to claim 4, characterized in that: During the reaction of the suspension, the solvent temperature is stabilized by a circulating cooling system to prevent local overheating from causing degradation of the gingerol structure; At the same time, the oxygen content was controlled below 0.5% under a nitrogen atmosphere to inhibit the oxidative deactivation of the gingerol and polyaniline layers.

7. The modified multifunctional polyester fiber containing gingerol according to claim 1, characterized in that: The specific preparation steps of the coating material are as follows: Weigh high-temperature resistant silicone resin, fluoropolymer, and heat-resistant polyimide powders in a mass ratio of 5:3:2, place them in a closed stirring vessel, and pre-mix them at 80–100°C for 2 hours. After the mixture is cooled to room temperature, a coupling promoter and a molecular tide activator are added, and the molecular tide technology processing device is started to place the coating material in a slightly periodic pressure and temperature fluctuation environment with a frequency controlled at 0.5-2 Hz. The treatment is continued for 1-1.5 hours to form a coating material.

8. The modified multifunctional polyester fiber containing gingerol according to claim 7, characterized in that: The coating material is uniformly mixed with the multifunctionalized polyaniline-modified gingerol powder and polyester chips, and coated on the surface of the polyester chips to form a dense and chemically bonded protective layer. After the coating is completed, it is vacuum-dried at 80° C. for 4 hours to obtain a multifunctional polyester masterbatch.

9. A method for preparing a modified multifunctional polyester fiber containing gingerol, which is prepared based on the modified multifunctional polyester fiber containing gingerol according to any one of claims 1 to 8, characterized in that: The specific steps include: S1. Weigh the polyester chips, multifunctional polyester masterbatch, dispersing agent, antistatic agent and antioxidant stabilizer according to weight, and pre-dry and mix them; S2, the dried raw materials are evenly mixed and fed into the spinning extruder under closed conditions; S3, melt plasticizing, filtering and metering the raw materials; S4, forming by spinning, cooling and shaping, and performing electrostatic control treatment during the forming process; S5, drawing and heat-setting the spun silk; S6: Complete oiling, winding, storage and packaging.

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