Quick-drying deodorizing antibacterial antistatic polyester fiber and preparation method thereof

Abstract

The invention relates to the technical field of polyester fiber processing, in particular to a quick-drying deodorizing antibacterial antistatic polyester fiber and a preparation method thereof. The invention discloses a modified PET (Polyethylene Terephthalate) composite material, which is prepared from the following raw materials in parts by weight: 100 parts of PET, 4 to 8 parts of functional master batch, 5 to 8 parts of epoxy functionalized styrene-acrylate oligomer, 10 to 20 parts of silane coupling agent modified montmorillonite, 5 to 8 parts of hydroxypropyl-beta-cyclodextrin loaded porous silicon dioxide microspheres, 1 to 2 parts of sulfoisophthalic acid metal salt and 2 to 4 parts of dispersing agent. The multifunctional master batch is prepared from the following raw materials in parts by weight: 65-75 parts of PET polyester chips, 8-12 parts of epoxy-terminated hyperbranched polyester, 3-5 parts of a sulfonate antistatic agent and 2-4 parts of an antibacterial agent, through the formula, balanced integration of moisture absorption, quick drying, lasting deodorization, efficient antibacterial and antistatic functions is realized, the function retention rate is improved after multiple times of washing, and the antibacterial property is improved. The defects of single function and poor durability of an after-treatment mode are overcome, and the development requirements of modern textiles on multi-functionalization and high quality are met.

Description

Technical Field

[0001] This application relates to the field of polyester fiber processing technology, and more specifically, to a quick-drying, deodorizing, antibacterial, and antistatic polyester fiber and its preparation method. Background Technology

[0002] Polyester knitted fabrics are widely used in the clothing industry due to their excellent mechanical properties, good dimensional stability, and ease of care. However, as a hydrophobic synthetic fiber, polyester has a compact molecular structure and high crystallinity, which gives it several inherent defects: First, it has poor moisture absorption, with a moisture regain of only about 0.4%, making it difficult for sweat to evaporate quickly when worn, easily resulting in a stuffy and sticky feeling; second, the smooth and hydrophobic surface of polyester fibers provides a suitable living environment for microorganisms, easily leading to bacterial growth and odor, especially during sports or in high-temperature environments; and third, it has poor antistatic properties.

[0003] To address the issues of poor moisture absorption, susceptibility to bacterial growth leading to odors, and poor antistatic properties in polyester, finishing processes are primarily employed to functionalize polyester knitted fabrics. These processes include padding with moisture-wicking agents to improve hydrophilicity, applying antibacterial agents to inhibit bacterial growth, and adding antistatic agents to resolve antistatic problems. However, these finishing methods have significant limitations: functional auxiliaries adhere to the fiber surface only through physical adsorption or weak chemical bonds, resulting in weak bonding with the fiber matrix. After repeated washing, these auxiliaries easily detach, leading to significant functional degradation and poor durability. Furthermore, when multiple functions are required simultaneously, the use of multiple functional auxiliaries in the same bath can cause mutual interference, such as charge neutralization between ionic auxiliaries and competitive adsorption of different auxiliaries onto the fiber surface. This makes it difficult to achieve stable integration of multiple functions, limiting the focus to a single function.

[0004] With consumption upgrades and advancements in textile technology, single-function fabrics can no longer meet the diverse needs of modern consumers for comfort, functionality, and health in textiles. High-performance fabrics integrating multiple functions such as quick-drying, deodorizing, and antibacterial properties have become a hot trend in the market. However, how to achieve efficient and environmentally friendly production and processing while ensuring a balanced and lasting effect of various functions remains a pressing technical challenge for the textile dyeing and finishing industry. Summary of the Invention

[0005] To address the problem that existing polyester fibers cannot simultaneously achieve multiple functions such as quick-drying, deodorizing, antibacterial, and antistatic properties, this application provides a quick-drying, deodorizing, antibacterial, and antistatic polyester fiber and its preparation method.

[0006] In a first aspect, this application provides a quick-drying, deodorizing, antibacterial, and antistatic polyester fiber, employing the following technical solution: A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber is prepared from the following raw materials in parts by weight: 100 portions of PET polyester chips 4-8 parts of functional masterbatch 5-8 parts of epoxy-functionalized styrene-acrylate oligomer 10-20 parts of silane coupling agent modified montmorillonite 5-8 parts of porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin 1-2 parts of sulfoisophthalic acid metal salt 2-4 parts dispersant The multifunctional masterbatch is prepared from the following raw materials in parts by weight: 65-75 parts of PET polyester chips 8-12 parts of terminal epoxy hyperbranched polyester 3-5 parts of sulfonate antistatic agent 2-4 parts of antibacterial agent.

[0007] By adopting the above technical solutions, a balanced integration of moisture-wicking and quick-drying, long-lasting deodorization, efficient antibacterial and antistatic functions is achieved. Furthermore, the function retention rate is improved after multiple washes, overcoming the shortcomings of single function and poor durability of post-finishing methods, and meeting the development needs of modern textiles for multi-functionality and high quality.

[0008] Epoxy-functionalized styrene-acrylate oligomers act as crosslinking bridges. Their epoxy groups react with PET end groups and silane coupling agent-modified montmorillonite surface functional groups to construct a three-dimensional network structure. This enhances the interfacial bonding between inorganic nanoparticles and the organic matrix, firmly anchoring modified montmorillonite and hydroxypropyl-β-cyclodextrin-loaded porous silica microspheres within the fiber matrix. This prevents the migration and loss of functional components during processing and use, overcoming the shortcomings of traditional finishing methods such as easy washing away of functional components and poor durability. Furthermore, the flexible buffering effect of the styrene-acrylate segments improves the fiber brittleness caused by the introduction of inorganic fillers, maintaining good mechanical properties. Silane coupling agent-modified montmorillonite and hydroxypropyl-β-cyclodextrin-loaded porous silica microspheres form a layered-spherical composite structure. Montmorillonite layers construct tortuous moisture transport channels to promote rapid drying, porous silica provides high specific surface area physical adsorption sites, and cyclodextrin cavities selectively encapsulate odor molecules, achieving synergistic deodorization through physical adsorption and chemical encapsulation. The two work together to achieve efficient and long-lasting deodorization.

[0009] The functional masterbatch uses PET polyester chips as a matrix, compounded with terminal epoxy hyperbranched polyester, sulfonate antistatic agents, and antibacterial agents. Uniform and stable loading of functional components is achieved through melt blending and pre-dispersion. The terminal epoxy hyperbranched polyester, as a highly branched reactive carrier, undergoes ring-opening crosslinking reactions with the PET matrix and epoxy-functionalized styrene-acrylate oligomers during processing, constructing a chemically bonded network and enhancing the interfacial bonding strength and wash fastness of the functional additives. Furthermore, the terminal epoxy hyperbranched polyester promotes the uniform dispersion of antibacterial agents in the masterbatch and achieves chemical locking through the reaction of epoxy groups with the matrix, synergistically inhibiting bacterial growth at the source in conjunction with the deodorizing components.

[0010] Meanwhile, sulfonate antistatic agents achieve uniform compatibility with the PET matrix through masterbatch pre-dispersion and form a synergistic antistatic system with sulfoisophthalic acid metal salts in the fiber matrix. The copolymerization of sulfoisophthalic acid metal salts with PET introduces sulfonic acid groups, endowing the fibers with durable hydrophilicity and antistatic properties. In addition, the functional masterbatch effectively isolates the various functional components, avoiding mutual interference when used simultaneously, and achieving efficient and stable integration of multiple functions such as fast drying, deodorization, antibacterial, and antistatic properties.

[0011] Preferably, the multifunctional masterbatch is prepared by the following method: PET polyester chips, terminal epoxy group hyperbranched polyester, sulfonate antistatic agent and antibacterial agent are mixed evenly, and then melt-extruded and granulated by a twin-screw extruder to obtain functional masterbatch; the processing temperature of the twin-screw extruder is 260-280℃, the screw speed is 150-250rpm, and the vacuum degree is -0.06~-0.09MPa.

[0012] By adopting the above technical solution, the terminal epoxy hyperbranched polyester and PET undergo a melt reaction, achieving uniform dispersion and stable coating of sulfonate antistatic agent and antibacterial agent, avoiding thermal degradation and oxidation, ensuring the reactivity and processing fluidity of functional masterbatch, and providing functionally uniform and stable raw materials for subsequent fiber melt spinning.

[0013] Preferably, the porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin are prepared by the following method: 1) Dissolve 40g of hydroxypropyl-β-cyclodextrin in 800-1000mL of ethanol solution to obtain hydroxypropyl-β-cyclodextrin solution; 2) Wet 50-60g of porous silica microspheres with ethanol, then slowly add them to a hydroxypropyl-β-cyclodextrin solution, stir for 3-4h, let stand for 12-14h, evaporate the solvent under reduced pressure, dry, wash with anhydrous ethanol, and dry to obtain a semi-finished product. 3) Mix 8.5-10g of aminosilane coupling agent with 1000-1200mL of deionized water, add glacial acetic acid to obtain a mixture with pH 4.5-5, then add the semi-finished product to the mixture, adjust the temperature to 55-60℃ and reflux for 3-4h, centrifuge, wash with anhydrous ethanol, and dry to obtain porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin.

[0014] Preferably, the volume ratio of ethanol to water in the ethanol solution is (3-5):1.

[0015] By employing the above-mentioned technical solution, porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin were prepared, achieving efficient loading and surface functionalization of the deodorizing functional component. First, a solution impregnation method was used to fully fill the mesoporous channels of the porous silica with hydroxypropyl-β-cyclodextrin. Hydroxypropyl modification was used to improve the solubility of cyclodextrin in ethanol and its affinity to the pore walls, ensuring a high loading rate. Second, surface grafting modification was performed using an aminosilane coupling agent to introduce active amino groups onto the microsphere surface. These groups can undergo ring-opening reactions with epoxy-functionalized styrene-acrylate oligomers and terminally epoxy-terminated hyperbranched polyesters, achieving chemical bonding between the deodorizing microspheres and the PET matrix, effectively preventing agglomeration during processing and desorption during use. The prepared loaded microspheres combine the inclusion and deodorizing capabilities of cyclodextrin with the high specific surface area adsorption characteristics of porous silica, and the surface chemical modification improved the interfacial compatibility and durability with the polyester matrix.

[0016] Preferably, the degree of branching of the terminal epoxy hyperbranched polyester is 0.5-0.8, the epoxy value is 0.3-0.6 mol / 100g, and the number average molecular weight is 2000-5000.

[0017] By adopting the above technical solution and optimizing the parameters of the terminal epoxy hyperbranched polyester, it can provide sufficient reaction sites to form a chemical crosslinking network with the PET matrix and epoxy oligomers, while avoiding molecular entanglement and reduced processing fluidity caused by excessive branching. At the same time, it has good fluidity and interfacial compatibility, and can be uniformly dispersed in the PET matrix.

[0018] Preferably, the antibacterial agent is one or more of nano zinc oxide, nano titanium dioxide loaded with silver, quaternary ammonium salt modified montmorillonite, or isothiazolinone antibacterial agents.

[0019] By adopting the above technical solutions, the surface effect of nanomaterials, the slow-release bactericidal effect of silver ions, the adsorption of quaternary ammonium salt cations, and the high efficiency and broad-spectrum characteristics of isothiazolinones are utilized to achieve synergistic antibacterial action through multiple mechanisms and improve antibacterial efficiency. At the same time, it has good compatibility with the masterbatch system, avoids mutual interference with antistatic agents and other components, and ensures stable integration of multiple functions.

[0020] Preferably, the sulfonate antistatic agent is one or more of sodium alkyl sulfonate, sodium alkylbenzene sulfonate, sodium polyoxyethylene alkyl ether sulfonate, or polyether ester amide sulfonate.

[0021] By adopting the above technical solution, the type of antistatic agent is optimized so that it does not interfere with the direct contact with antibacterial agents and other components, and forms a synergistic conductive network with the sulfoisophthalic acid metal salt in the fiber matrix, which greatly reduces the surface resistance of the fiber and the antistatic effect is well maintained after multiple washes.

[0022] Preferably, the epoxy-functionalized styrene-acrylate oligomer has a weight-average molecular weight of 5,000-10,000, a functionality of 4-8, and an epoxy value of 0.3-0.7 mol / 100g.

[0023] By adopting the above technical solution, the parameters of epoxy-functionalized styrene-acrylate oligomers are optimized, enabling them to form a three-dimensional cross-linked network with the terminal epoxy hyperbranched polyester and PET matrix in the functional masterbatch. This greatly enhances the chemical bonding strength between the functional components and the fiber matrix, and improves wash fastness and mechanical properties.

[0024] Preferably, the dispersant is one or more of polyethylene glycol, polyvinylpyrrolidone, ethylene-acrylic acid copolymer wax, or ethylene glycol lignite wax ester.

[0025] By adopting the above technical solutions and optimizing the types of dispersants, the surface energy of inorganic functional components such as silane coupling agent-modified montmorillonite and porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin is effectively reduced, preventing thermal agglomeration and phase separation during melt processing, ensuring the uniformity of fiber structure and the consistency of function, while improving melt flowability and enhancing spinning quality.

[0026] Secondly, this application provides a method for preparing quick-drying, deodorizing, antibacterial, and antistatic polyester fibers, using the following technical solution: A method for preparing quick-drying, deodorizing, antibacterial, and antistatic polyester fiber includes the following steps: S1. PET polyester chips, functional masterbatch, epoxy-functionalized styrene-acrylate oligomer, silane coupling agent modified montmorillonite, porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin, sulfoisophthalic acid metal salt and dispersant are mixed to obtain a premix. S2. The premixed material is fed into a twin-screw extruder for melt blending and extrusion, and then fed into the spinning assembly via a metering pump. Melt spinning is carried out at a spinning temperature of 280-300℃ and a spinning speed of 800-1500m / min to obtain nascent fibers. S3. Nascent fibers are cooled by side blowing, oiled, stretched, heat-set, and wound to obtain quick-drying, deodorizing, antibacterial, and antistatic polyester fibers.

[0027] By adopting the above technical solution, S1 premixing ensures uniform dispersion of raw materials; S2 melt blending at 270-290℃ causes ring-opening crosslinking between epoxy functionalized oligomers and hyperbranched polyester, constructing a chemical bond network and overcoming the defect of easy detachment during post-treatment; combined with spinning at 280-300℃, stable loading of functional components is achieved; S3, through optimized cooling, drawing, and heat setting, regulates the fiber structure and ensures functional balance. This process solves the problems of poor durability and functional interference of polyester fibers, achieving efficient integration of fast drying, deodorization, antibacterial, and antistatic properties.

[0028] Preferably, the twin-screw extruder in step S2 has an aspect ratio of 36:1-44:1, and the temperature of each section is set as follows: Zone 1 265-275℃, Zone 2 275-285℃, Zone 3 280-290℃, Zone 4 280-290℃, Zone 5 275-285℃, and Die head 270-280℃; the spinneret of the spinning assembly has a spinneret orifice diameter of 0.2-0.4mm and an aspect ratio of 2-4.

[0029] By adopting the above technical solutions, optimizing the length-to-diameter ratio and temperature control of the twin-screw extruder, the full plasticization and reaction time of the melt are ensured, promoting the ring-opening crosslinking of epoxy groups. Combined with specific spinneret parameters, stable melt flow and uniform extrusion are achieved, ensuring the fiber forming quality and the consistency of functional component distribution.

[0030] Preferably, in step S3, the side-blowing temperature is 18-25℃, the wind speed is 0.3-0.8m / s, the stretching ratio is 2.5-4.0 times, the stretching temperature is 80-120℃, the heat setting temperature is 120-180℃, and the time is 10-30 seconds.

[0031] By adopting the above technical solutions, the side blowing is optimized to achieve uniform cooling and solidification of the nascent fibers; the mechanical properties are improved by controlling the molecular orientation and crystallinity with the stretch ratio; heat setting eliminates internal stress, stabilizes the fiber structure, ensures strong interfacial bonding of functional components, and guarantees fiber dimensional stability and functional durability.

[0032] In summary, this application has the following beneficial effects: This application constructs a three-dimensional chemical cross-linking network using epoxy-functionalized styrene-acrylate oligomers, firmly anchoring silane coupling agent-modified montmorillonite and porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin to the fiber matrix, achieving a layered-spherical composite structure for synergistic deodorization. The terminal epoxy-based hyperbranched polyester in the functional masterbatch promotes uniform dispersion and chemical locking of the antibacterial agent, forming a synergistic antistatic system with sulfonate antistatic agents and sulfoisophthalic acid metal salts. This technical solution achieves a balanced integration of moisture-wicking, fast-drying, long-lasting deodorization, highly efficient antibacterial, and antistatic functions. The functional retention rate is significantly improved after multiple washes, overcoming the shortcomings of single-function finishing methods, poor durability, and mutual interference among multiple components, thus meeting the development needs of modern textiles for multifunctionality and high quality. Detailed Implementation Preparation Example

[0033] The PET polyester chips are YS-C01 products from Sinopec Yizheng Chemical Fiber.

[0034] Quaternary ammonium salt modified montmorillonite is the DK1 product of Zhejiang Fenghong New Material Co., Ltd.

[0035] Preparation Example 1 A multifunctional masterbatch is prepared by the following method: 650g of PET polyester chips, 80g of terminal epoxy hyperbranched polyester, 30g of sulfonate antistatic agent (sodium dodecyl sulfonate) and 20g of antibacterial agent (nano zinc oxide) were mixed evenly, and then melt-extruded and granulated by a twin-screw extruder to obtain functional masterbatch. The degree of branching of the terminal epoxy hyperbranched polyester is 0.5, the epoxy value is 0.3 mol / 100g, and the number average molecular weight is 2000. The twin-screw extruder has a processing temperature of 260℃, a screw speed of 150rpm, and a vacuum degree of -0.06MPa.

[0036] The difference between Preparation Examples 2-3 and Preparation Example 1 lies in the types, amounts, and parameters of raw materials used to prepare the multifunctional masterbatch. The specific differences are shown in Table 1. Table 1. Raw material types, dosages, and parameters for preparing multifunctional masterbatches in Examples 1-3.

[0037] Preparation Example 4 The porous silica microspheres have an average particle size of 5 μm, a specific surface area of ​​800 m² / g, a pore volume of 1.5 cm³ / g, and a pore size distribution of 15 nm.

[0038] A porous silica microsphere loaded with hydroxypropyl-β-cyclodextrin was prepared by the following method: 1) Dissolve 80g of hydroxypropyl-β-cyclodextrin in 1600mL of ethanol solution to obtain hydroxypropyl-β-cyclodextrin solution; 2) Wet 100g of porous silica microspheres with ethanol, then slowly add them to a hydroxypropyl-β-cyclodextrin solution, stir for 3h, let stand for 12h, evaporate the solvent under reduced pressure, dry, wash with anhydrous ethanol, and dry to obtain a semi-finished product. 3) Mix 17g of aminosilane coupling agent (γ-aminopropyltriethoxysilane) with 2000mL of deionized water, add glacial acetic acid to obtain a mixture with pH 4.5, then add the semi-finished product to the mixture, adjust the temperature to 55℃ and reflux for 3h, centrifuge, wash with anhydrous ethanol, and dry to obtain porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin.

[0039] The difference between Preparation Examples 5-6 and Preparation Example 4 lies in the types, amounts, and parameters of raw materials used to prepare porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin. Specific differences are shown in Table 2. Table 2. Raw material types, amounts, and parameters for the preparation of porous silica microspheres supported on hydroxypropyl-β-cyclodextrin in Examples 4-6.

[0040] Preparation Example 7 A silane coupling agent modified montmorillonite is prepared by the following method: 500g of sodium-based montmorillonite was dispersed in deionized water to form a suspension with a mass concentration of 5%. 50g of silane coupling agent (vinyltriethoxysilane) with a mass of 1% of montmorillonite was added. The mixture was stirred and reacted at 60°C for 2 hours. After filtration, washing, drying and grinding, silane coupling agent modified montmorillonite was obtained.

[0041] Example The PET polyester chips are YS-C01 products from Sinopec Yizheng Chemical Fiber.

[0042] The ethylene-acrylic acid copolymer wax is a product of Honeywell AC® 5120.

[0043] Polyvinylpyrrolidone (PVP) is produced by Shandong Fengtai Biotechnology Co., Ltd.

[0044] Example 1 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber is prepared by the following method: S1. Mix 1000g of PET polyester chips, 40g of functional masterbatch (from Preparation Example 1), 50g of epoxy-functionalized styrene-acrylate oligomer, 100g of silane coupling agent modified montmorillonite (from Preparation Example 7), 50g of porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin (from Preparation Example 4), 10g of sulfoisophthalic acid metal salt (sodium sulfoisophthalate), and 20g of dispersant (polyethylene glycol 800) to obtain a premix. The epoxy-functionalized styrene-acrylate oligomer has a weight-average molecular weight of 5000, a functionality of 4, and an epoxy value of 0.3 mol / 100g. S2. The premixed material is fed into a twin-screw extruder, melt-blended and extruded, and then fed into the spinning assembly via a metering pump. Melt spinning is carried out at a spinning temperature of 280℃ and a spinning speed of 800m / min to obtain nascent fibers. In step S2, the twin-screw extruder has an aspect ratio of 36:1, and the temperature of each section is set as follows: Zone 1 265℃, Zone 2 275℃, Zone 3 280℃, Zone 4 280℃, Zone 5 275℃, and Die head 270℃; the spinneret of the spinning assembly has a spinneret orifice diameter of 0.2mm and an aspect ratio of 2. S3. Nascent fibers are cooled by side blowing, oiled, stretched, heat-set and wound to obtain quick-drying, deodorizing, antibacterial and antistatic polyester fibers. In step S3, the side-blowing temperature is 18℃, the wind speed is 0.3m / s, the stretching ratio is 2.5 times, the stretching temperature is 80℃, the heat setting temperature is 120℃, and the time is 10 seconds.

[0045] The difference between Examples 2-3 and Example 1 lies in the types, amounts, and parameters of raw materials used to prepare the quick-drying, deodorizing, antibacterial, and antistatic polyester fibers. Specific differences are shown in Table 3. Table 3. Raw material types, dosages, and parameters for preparing quick-drying, deodorizing, antibacterial, and antistatic polyester fibers.

[0046] Example 4 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this embodiment and Example 1 is that phthalate is used instead of terminal epoxy hyperbranched polyester in Preparation Example 1.

[0047] Example 5 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this embodiment and Example 1 is that the epoxy-functionalized styrene-acrylate oligomer has a weight-average molecular weight of 5000, a functionality of 4, and an epoxy value of 0.1 mol / 100g.

[0048] Comparative Example Comparative Example 1 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this comparative example and Example 1 is that a styrene-acrylate copolymer is used instead of an epoxy-functionalized styrene-acrylate oligomer.

[0049] The weight-average molecular weight of the styrene-acrylate copolymer is 5000.

[0050] Comparative Example 2 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this comparative example and Example 1 is that talc powder was used instead of sodium montmorillonite in Preparation Example 7.

[0051] Comparative Example 3 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this comparative example and Example 1 is that sodium sulfoisophthalate is not added.

[0052] Comparative Example 4 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this comparative example and Example 1 is that porous silica microspheres are used instead of porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin.

[0053] Comparative Example 5 A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber. The difference between this comparative example and Example 1 is that the sulfonate antistatic agent is not added when preparing the functional masterbatch, but is added when preparing the quick-drying, deodorizing, antibacterial, and antistatic polyester fiber S1.

[0054] Detection methods / test methods Samples: The quick-drying, deodorizing, antibacterial, and antistatic polyester fibers obtained from Examples 1-5 and Comparative Examples 1-5 were processed into blended yarns through carding, drawing, roving, spinning, and winding to obtain samples, which were then subjected to the following tests.

[0055] Sweat absorption test: Refer to GB / T21655.1-2008 "Evaluation of the moisture absorption and quick-drying properties of textiles".

[0056] Antibacterial properties test: The test was conducted in accordance with GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles".

[0057] Deodorization performance test: Refer to GB / T33610.2-2017 "Determination of deodorization performance of textiles".

[0058] Antistatic property test: The antistatic properties of the fabric were tested according to GB / T12703.4-2010 "Evaluation of electrostatic properties of textiles - Part 4: Resistivity". The test data are shown in Table 4. Table 4 Experimental data of Examples 1-5 and Comparative Examples 1-5

[0059] The samples were placed in a washing machine and a standard wash cycle was set for 1 hour. This cycle was repeated 100 times. The sweat absorption, antibacterial properties, deodorizing properties, and antistatic properties were then tested. The test data are shown in Table 5. Table 5 Experimental data of Examples 1-5 and Comparative Examples 1-5

[0060] The experimental data above demonstrate that this application, through the combined effects of a three-dimensional chemical cross-linking network constructed from epoxy-functionalized styrene-acrylate oligomers, a layered-spherical synergistic deodorizing structure of silane coupling agent-modified montmorillonite and hydroxypropyl-β-cyclodextrin-loaded porous silica microspheres, and a functional masterbatch pre-dispersion and sulfonate synergistic antistatic system, successfully solves the problems of single function and poor durability of traditional finishing methods, achieving a balanced integration and long-lasting maintenance of moisture absorption and quick drying, long-lasting deodorization, high-efficiency antibacterial and antistatic functions.

[0061] Comparing Example 1 with Comparative Examples 1-5, Comparative Example 1, lacking epoxy-functionalized styrene-acrylate oligomers, failed to form a cross-linking network, resulting in easy detachment of functional components and a sharp drop in performance after washing. Comparative Example 2, replacing montmorillonite with talc, resulted in the absence of a layered structure, obstructing moisture transport channels and significantly reducing moisture absorption and quick-drying performance. Comparative Example 3, omitting sulfoisophthalic acid metal salts, prevented the formation of a synergistic conductive network by antistatic components, leading to insufficient durability. Comparative Example 4, lacking cyclodextrin loading, had a single deodorization mechanism, resulting in significantly deteriorated deodorization effects. Comparative Example 5, changing the method of adding antistatic agents, reduced dispersion uniformity and decreased functional retention. These comparisons fully demonstrate that this application achieves multifunctional balanced integration and long-term performance retention through the integration of epoxy-functionalized styrene-acrylate oligomer cross-linking, layered-spherical composite deodorization, sulfonate synergistic antistatic properties, and masterbatch pre-dispersion techniques.

[0062] Comparing Examples 1 and 4-5, Example 4 replaced the terminal epoxy hyperbranched polyester with phthalate, and Example 5 reduced the epoxy value to 0.1 mol / 100g. After washing, the wicking height, antibacterial rate and deodorization rate of both were significantly reduced, indicating that the epoxy value of the terminal epoxy hyperbranched polyester and the epoxy-functionalized styrene-acrylate oligomer has a significant impact on the quick-drying, antibacterial and deodorizing properties of the fiber.

[0063] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A quick-drying, deodorizing, antibacterial, and antistatic polyester fiber, characterized in that, It is prepared from the following raw materials in parts by weight: 100 portions of PET polyester chips 4-8 parts of functional masterbatch 5-8 parts of epoxy-functionalized styrene-acrylate oligomer 10-20 parts of silane coupling agent modified montmorillonite 5-8 parts of porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin 1-2 parts of sulfoisophthalic acid metal salt 2-4 parts dispersant The multifunctional masterbatch is prepared from the following raw materials in parts by weight: 65-75 parts of PET polyester chips 8-12 parts of terminal epoxy hyperbranched polyester 3-5 parts of sulfonate antistatic agent 2-4 parts of antibacterial agent.

2. The quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 1, characterized in that, The porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin were prepared by the following method: 1) Dissolve 40g of hydroxypropyl-β-cyclodextrin in 800-1000mL of ethanol solution to obtain hydroxypropyl-β-cyclodextrin solution; 2) Wet 50-60g of porous silica microspheres with ethanol, then slowly add them to a hydroxypropyl-β-cyclodextrin solution, stir for 3-4h, let stand for 12-14h, evaporate the solvent under reduced pressure, dry, wash with anhydrous ethanol, and dry to obtain a semi-finished product. 3) Mix 8.5-10g of aminosilane coupling agent with 1000-1200mL of deionized water, add glacial acetic acid to obtain a mixture with pH 4.5-5, then add the semi-finished product to the mixture, adjust the temperature to 55-60℃ and reflux for 3-4h, centrifuge, wash with anhydrous ethanol, and dry to obtain porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin.

3. The quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 1, characterized in that: The terminal epoxy hyperbranched polyester has a branching degree of 0.5-0.8, an epoxy value of 0.3-0.6 mol / 100g, and a number-average molecular weight of 2000-5000.

4. The quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 1, characterized in that: The antibacterial agent is one or more of the following: nano zinc oxide, nano titanium dioxide loaded with silver, quaternary ammonium salt modified montmorillonite, or isothiazolinone antibacterial agents.

5. The quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 1, characterized in that: The sulfonate antistatic agent is one or more of sodium alkyl sulfonate, sodium alkylbenzene sulfonate, sodium polyoxyethylene alkyl ether sulfonate, or polyether ester amide sulfonate.

6. The quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 1, characterized in that: The epoxy-functionalized styrene-acrylate oligomer has a weight-average molecular weight of 5000-10000, a functionality of 4-8, and an epoxy value of 0.3-0.7 mol / 100g.

7. The quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 1, characterized in that: The dispersant is one or more of polyethylene glycol, polyvinylpyrrolidone, ethylene-acrylic acid copolymer wax, or ethylene glycol lignite wax ester.

8. A method for preparing quick-drying, deodorizing, antibacterial, and antistatic polyester fiber as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. PET polyester chips, functional masterbatch, epoxy-functionalized styrene-acrylate oligomer, silane coupling agent modified montmorillonite, porous silica microspheres loaded with hydroxypropyl-β-cyclodextrin, sulfoisophthalic acid metal salt and dispersant are mixed to obtain a premix. S2. The premixed material is fed into a twin-screw extruder for melt blending and extrusion, and then fed into the spinning assembly via a metering pump. Melt spinning is carried out at a spinning temperature of 280-300℃ and a spinning speed of 800-1500m / min to obtain nascent fibers. S3. Nascent fibers are cooled by side blowing, oiled, stretched, heat-set, and wound to obtain quick-drying, deodorizing, antibacterial, and antistatic polyester fibers.

9. The method for preparing a quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 8, characterized in that: In step S2, the twin-screw extruder has an aspect ratio of 36:1-44:1, and the temperature of each section is set as follows: Zone 1 265-275℃, Zone 2 275-285℃, Zone 3 280-290℃, Zone 4 280-290℃, Zone 5 275-285℃, and Die head 270-280℃; the spinneret of the spinning assembly has a spinneret orifice diameter of 0.2-0.4mm and an aspect ratio of 2-4.

10. The method for preparing a quick-drying, deodorizing, antibacterial, and antistatic polyester fiber according to claim 8, characterized in that: In step S3, the side-blowing temperature is 18-25℃, the wind speed is 0.3-0.8m / s, the stretching ratio is 2.5-4.0 times, the stretching temperature is 80-120℃, the heat setting temperature is 120-180℃, and the time is 10-30 seconds.

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