Moisture-absorbing and sweat-releasing blended fabric and preparation process thereof

Abstract

The invention relates to the technical field of blend fibers, and discloses a moisture-absorbing and sweat-releasing blended fabric and a preparation process thereof.The moisture-absorbing and sweat-releasing blended fabric is a double-faced fabric subjected to durable moisture-guiding finishing and comprises a skin attaching side and an outer side; the skin-attaching side is formed by first blended yarns, and the first blended yarns comprise hydrophilic fibers and first moisture-conducting synthetic fibers; the outer side is formed by second yarns, and the second yarns comprise second moisture-conducting synthetic fibers; wherein the first moisture-conducting synthetic fibers and the second moisture-conducting synthetic fibers are polyester fibers with special-shaped sections and hydrophilic polyester fibers; the durable moisture-conducting finishing is used for forming a hydrophilic film layer on the skin-attaching side of the double-sided fabric; the hydrophilic film layer contains a moisture absorption auxiliary agent and is used for improving the continuous perspiration ability of the double-sided fabric in a wet environment and keeping the leveling property and the color fastness of the double-sided fabric. The moisture-absorbing and sweat-releasing fabric solves the problems that the sweat-releasing capability of an existing moisture-absorbing and sweat-releasing fabric is reduced in a wet environment, and the surface of the fabric is wet and sticky.

Description

Technical Field

[0001] This invention relates to the field of blended fiber technology, and more specifically, to a moisture-wicking blended fabric and its preparation process. Background Technology

[0002] With the improvement of people's living standards and the enhancement of health awareness, the requirements for the comfort of textiles, especially underwear and sportswear, are increasing. Moisture-wicking function is one of the important indicators for evaluating the comfort of fabrics. It quickly absorbs sweat from the skin's surface and conducts it to the outer surface of the fabric for evaporation, thus keeping the skin dry and improving the wearing experience. Traditional natural fibers such as cotton have good moisture absorption, but their wicking speed is slow, easily causing the fabric to feel sticky against the skin; while chemical fibers such as polyester wick away sweat quickly, their moisture absorption performance is insufficient. Therefore, optimizing the combination of fibers with different properties through blending technology to develop high-performance fabrics that combine good moisture absorption and rapid wicking has become an important research direction in the textile field.

[0003] In existing technologies, moisture-wicking blended fabrics typically employ a blend of hydrophilic and hydrophobic fibers in a specific ratio, utilizing the capillary effect and moisture gradient between the fibers to achieve moisture-wicking functionality. Common technical solutions include blends of polyester and cotton fibers, polyester and viscose fibers, and polyester and bamboo fibers. These blended fabrics optimize moisture-wicking performance by adjusting fiber ratios, yarn structure, and fabric weave, thus meeting market demands to a certain extent.

[0004] However, existing moisture-wicking blended fabrics still have some shortcomings in practical applications: First, in high-humidity environments or under conditions of heavy sweating, the fabric's continuous moisture-wicking ability decreases significantly, leading to moisture buildup on the fabric surface and affecting wearing comfort. Second, while the differences in hydrophilicity and hydrophobicity between blended fibers are beneficial for moisture conduction, they can easily lead to uneven dyeing or decreased colorfastness during dyeing and finishing processes. Third, current moisture-wicking finishing methods mostly involve applying finishing agents to the fabric surface through physical adsorption or padding. The finishing agents lack a stable bond with the fibers and are easily detached and lost after repeated washing, causing the fabric's moisture-wicking effect to gradually weaken. Fabrics with good moisture-wicking performance when newly purchased often show significant performance degradation after a period of use, affecting the wearing experience. These problems, to some extent, limit the performance improvement and application expansion of moisture-wicking blended fabrics.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0006] In response to the problems in related technologies, this invention proposes a moisture-wicking blended fabric and its preparation process to overcome the aforementioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by the present invention is as follows:

[0008] According to one aspect of the present invention, a moisture-wicking blended fabric is provided, which is a double-sided fabric after a durable moisture-wicking finish, including a skin-contact side and an outer side; the skin-contact side is made of a first blended yarn, which is obtained by blending and spinning a hydrophilic fiber and a first moisture-wicking synthetic fiber; the outer side is made of a second yarn, which is obtained by spinning a second moisture-wicking synthetic fiber; wherein the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are both profiled cross-section polyester fibers and / or hydrophilic polyester fibers; the durable moisture-wicking finish is used to form a hydrophilic film layer on the skin-contact side of the double-sided fabric to construct a moisture migration channel; the hydrophilic film layer contains a moisture-wicking agent, which is used to improve the continuous moisture-wicking ability of the double-sided fabric in a humid environment and maintain the evenness and color fastness of the double-sided fabric.

[0009] Furthermore, the hydrophilic fiber is one or more of lyocell fiber, modal fiber, viscose fiber, and cotton fiber; the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are both one or more of grooved, cross-shaped, or trilobal cross-section polyester fibers.

[0010] Furthermore, in the first blended yarn, the mass fraction of hydrophilic fiber is 55-80%, and the mass fraction of the first moisture-wicking synthetic fiber is 20-45%; in the second yarn, the mass fraction of the second moisture-wicking synthetic fiber is 70-95%.

[0011] Furthermore, the durable moisture-wicking finishing involves forming a hydrophilic film layer on the fiber surface, which is formed by the reaction and curing of a hydrophilic polymer and a crosslinking agent; wherein the hydrophilic polymer is one or more of waterborne polyurethane, waterborne acrylic resin, or polyethylene glycol-based hydrophilic agents; and the crosslinking agent is one or more of multifunctional epoxy resin, polycarboxylic acid crosslinking agent, or polyisocyanate crosslinking agent.

[0012] Furthermore, the moisture-absorbing agent is an inorganic moisture-absorbing agent particle and / or a supported moisture-absorbing salt; the inorganic moisture-absorbing agent particle is silica gel; the supported moisture-absorbing salt is one or more of magnesium chloride and calcium chloride loaded on a porous silica gel carrier; the moisture-absorbing agent is fixed to the fiber surface on the skin side through a hydrophilic membrane layer to reduce the accumulation of moisture on the fabric surface, so as to ensure stable perspiration performance.

[0013] Furthermore, the hydrophilic fiber is a cationic modified fiber; the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are both modified polyester fibers that can be dyed with cationic dyes; among them, the cationic modified fiber is a cellulose fiber modified by introducing quaternary ammonium groups, and the modified polyester fiber is a copolymer modified polyester fiber containing sulfonate groups.

[0014] According to another aspect of the present invention, a process for preparing a moisture-wicking blended fabric is also provided, comprising: blending and spinning a hydrophilic fiber with a first moisture-wicking synthetic fiber in a set ratio to obtain a first blended yarn, and spinning a second yarn using a second moisture-wicking synthetic fiber; performing double-sided knitting using a double-sided knitting machine, so that the first blended yarn forms the skin-contact side and the second yarn forms the outer side, to obtain a double-sided fabric; performing pretreatment on the double-sided fabric and then completing dyeing and color-fixing finishing; immersing the double-sided fabric in a finishing solution containing a hydrophilic polymer, a crosslinking agent and a moisture-wicking agent, and then drying and baking crosslinking, so that a hydrophilic film layer containing a moisture-wicking agent is formed on the surface of the fiber on the skin-contact side, thereby obtaining a moisture-wicking blended fabric.

[0015] Furthermore, the mass fraction of the hydrophilic polymer in the finishing solution is 10-60 g / L, and the mass fraction of the crosslinking agent is 2-20 g / L; the drying temperature is 90-120℃, the baking temperature is 140-175℃, and the baking time is 30-120 s; baking crosslinking is used to make the functional groups of the crosslinking agent react chemically with the active groups on the fiber surface to form stable covalent bonds.

[0016] Furthermore, the double-sided knitting process includes a yarn-adding structure, specifically: adding a first blended yarn as a yarn-adding loop to the skin-contact side, so that the surface coverage of the first blended yarn on the skin-contact side is greater than the surface coverage of the second yarn on the outer side.

[0017] Furthermore, the average particle size of the moisture-absorbing agent is 2-30μm, and the dosage is 5-80g / L. After the moisture-absorbing agent is impregnated, dried and baked with the finishing solution, it is fixed on the surface of the fiber on the skin side, so that the fabric can retain the effective moisture-absorbing agent after multiple washes.

[0018] The beneficial effects of this invention are as follows:

[0019] (1) This invention significantly improves the fabric’s ability to continuously wick away sweat in high humidity or heavy sweating conditions by forming a hydrophilic film layer containing a moisture-wicking agent on the surface of the fibers on the skin side. The moisture-wicking agent can actively absorb and temporarily store the moisture on the fabric surface, preventing sweat from accumulating on the skin side. Combined with the moisture migration channels constructed by the moisture-wicking synthetic fibers in the double-sided fabric structure, sweat can be quickly transferred from the skin side to the outside and evaporated. This solves the problem of reduced sweat wicking ability and wet and sticky fabric surface of existing moisture-wicking fabrics in humid environments, and maintains dry and comfortable wear for a long time.

[0020] (2) This invention effectively solves the problem of uneven dyeing and decreased color fastness of blended fabrics caused by the difference in hydrophilicity and hydrophobicity of fibers by using cationic modified fibers and modified polyester fibers that can be dyed with cationic dyes, and by using a two-bath dyeing process. Among them, the quaternary ammonium groups introduced on the surface of the cationic modified fibers and the sulfonate groups in the modified polyester fibers can form stable ionic bonds with cationic dyes. At the same time, the covalent bonds of reactive dyes on cellulose fibers further improve the dyeing uniformity, so that the blended fabrics present a uniform color and high color fastness appearance quality.

[0021] (3) The present invention uses a hydrophilic membrane layer formed by the reaction and curing of a hydrophilic polymer and a crosslinking agent to firmly fix the moisture-wicking agent to the surface of the fiber on the skin side, which significantly improves the durability of the finishing effect. The functional groups of the crosslinking agent react with the hydroxyl and amino groups on the fiber surface to form stable covalent bonds, so that the moisture-wicking agent can still be effectively retained even after multiple washes. This solves the problem of easy shedding and loss of existing moisture-wicking finishing agents and the degradation of fabric performance, and ensures that the fabric maintains good moisture-wicking performance during long-term use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the chemical structure of cationic modified fiber A1 in a moisture-wicking blended fabric according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the chemical structure of modified polyester fiber B1 in a moisture-wicking blended fabric according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic flowchart of a process for preparing a moisture-wicking blended fabric according to an embodiment of the present invention. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the present invention, a moisture-wicking blended fabric and its preparation process are provided.

[0028] Example 1

[0029] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. According to one embodiment of the present invention, a moisture-wicking blended fabric is provided. This moisture-wicking blended fabric is a double-sided fabric after durable moisture-wicking finishing, including a skin-contact side and an outer side. The skin-contact side is made of a first blended yarn, which is obtained by blending and spinning a hydrophilic fiber with a first moisture-wicking synthetic fiber. The outer side is made of a second yarn, which is obtained by spinning a second moisture-wicking synthetic fiber. The first and second moisture-wicking synthetic fibers are both profiled cross-section polyester fibers and / or hydrophilic polyester fibers. The durable moisture-wicking finishing is used to form a hydrophilic film layer on the skin-contact side of the double-sided fabric to construct moisture migration channels. The hydrophilic film layer contains a moisture-wicking agent, which is used to improve the continuous moisture-wicking ability of the double-sided fabric in a humid environment and maintain the evenness and color fastness of the double-sided fabric.

[0030] In one embodiment, the hydrophilic fiber is one or more of lyocell fiber, modal fiber, viscose fiber, and cotton fiber; the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are one or more of grooved, cross-shaped, or trilobal cross-section polyester fibers.

[0031] In one embodiment, the first blended yarn has a hydrophilic fiber mass fraction of 55-80% and a first moisture-wicking synthetic fiber mass fraction of 20-45%; the second yarn has a second moisture-wicking synthetic fiber mass fraction of 70-95%.

[0032] In one embodiment, the durable moisture-wicking finishing is to form a hydrophilic film layer on the fiber surface, the hydrophilic film layer being formed by reacting and curing a hydrophilic polymer P with a crosslinking agent C; wherein, the hydrophilic polymer P is one or more of waterborne polyurethane, waterborne acrylic resin, or polyethylene glycol-based hydrophilic agents; and the crosslinking agent C is one or more of multifunctional epoxy resin, polycarboxylic acid crosslinking agent, or polyisocyanate crosslinking agent.

[0033] It should be noted that, in this invention, the epoxy groups of the multifunctional epoxy resin are used to react with the hydroxyl and / or amino groups on the fiber surface to form ether bonds and / or amine bonds; the carboxyl groups of the polycarboxylic acid crosslinking agent are used to react with the hydroxyl groups on the fiber surface to form ester bonds; and the isocyanate groups of the polyisocyanate crosslinking agent are used to react with the hydroxyl and / or amino groups on the fiber surface to form urethane bonds and / or urea bonds.

[0034] In one embodiment, the moisture-wicking agent is an inorganic moisture-wicking agent particle and / or a supported moisture-wicking salt; the inorganic moisture-wicking agent particle is silica gel; the supported moisture-wicking salt is one or more of magnesium chloride and calcium chloride loaded on a porous silica gel carrier; the moisture-wicking agent is fixed to the fiber surface on the skin side through a hydrophilic membrane layer to reduce moisture accumulation on the fabric surface and ensure stable perspiration performance.

[0035] In one embodiment, the hydrophilic fiber is a cationic modified fiber A1; the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are both modified polyester fibers B1 that can be dyed with cationic dyes; wherein, the cationic modified fiber A1 is a cellulose fiber modified by introducing quaternary ammonium groups, and the modified polyester fiber B1 is a copolymer modified polyester fiber containing sulfonate groups.

[0036] Specifically, such as Figure 1 As shown, the cationic modified fiber A1 in this invention is a cationic cellulose structure formed by introducing quaternary ammonium substituents onto the hydroxyl groups of the cellulose molecular chain; wherein, * indicates the connection site between the substituent and the cellulose backbone, the quaternary ammonium nitrogen atom carries a positive charge, and Cl⁻ is the charge-paired ion, used to indicate that the cellulose fiber has cationic sites that can interact with anionic dye auxiliaries.

[0037] Specifically, such as Figure 2 As shown, the modified polyester fiber B1 that can be dyed with cationic dyes in this invention is a copolymer structure in which sulfonate groups are introduced into the polyester molecular chain; wherein, * represents the linking site of the polymer chain, the sulfonate group exists in the form of salt and provides hydrophilicity and ionic group sites, thereby giving the polyester fiber the ability to be dyed with cationic dyes and improving the levelness and color fastness of blended fabrics.

[0038] like Figure 3 As shown, according to another embodiment of the present invention, a process for preparing a moisture-wicking blended fabric is also provided, comprising the following steps: blending and spinning a hydrophilic fiber with a first moisture-wicking synthetic fiber in a set ratio to obtain a first blended yarn, and spinning a second yarn using a second moisture-wicking synthetic fiber; performing double-sided knitting using a double-sided knitting machine, so that the first blended yarn forms the skin-contact side and the second yarn forms the outer side, to obtain a double-sided fabric; performing pretreatment on the double-sided fabric and then completing dyeing and color-fixing finishing; immersing the double-sided fabric in a finishing solution containing a hydrophilic polymer P, a crosslinking agent C, and a moisture-wicking agent, and then drying and baking crosslinking, so that a hydrophilic film layer containing a moisture-wicking agent is formed on the surface of the fiber on the skin-contact side, thereby obtaining a moisture-wicking blended fabric.

[0039] Specifically, in this first embodiment, 60% lyocell fiber and 40% cross-section polyester fiber are blended and spun to obtain a first blended yarn; a second yarn is spun using 90% cross-section polyester fiber; double-sided knitting is performed using a double-sided knitting machine, so that the first blended yarn forms the skin-contact side and the second yarn forms the outer side, resulting in a double-sided fabric; the double-sided fabric is pretreated and then dyed and fixed; the double-sided fabric is impregnated with a finishing solution containing 30 g / L waterborne polyurethane, 8 g / L multifunctional epoxy resin crosslinking agent and 40 g / L loaded moisture-wicking salt, dried at 100°C, and then baked at 160°C for 60 s to obtain a moisture-wicking blended fabric; wherein, the loaded moisture-wicking salt is magnesium chloride loaded on silica gel with an average particle size of 10 μm.

[0040] In one embodiment, the mass fraction of hydrophilic polymer P in the finishing solution is 10-60 g / L, and the mass fraction of crosslinking agent C is 2-20 g / L; the drying temperature is 90-120°C, the baking temperature is 140-175°C, and the baking time is 30-120 s; the baking crosslinking is used to make the functional groups of crosslinking agent C react chemically with the active groups on the fiber surface to form stable covalent bonds.

[0041] In one embodiment, double-sided knitting includes a yarn-adding structure, specifically: adding a first blended yarn as a yarn-adding loop to the skin-contact side, such that the surface coverage of the first blended yarn on the skin-contact side is greater than the surface coverage of the second yarn on the outer side.

[0042] In one embodiment, the average particle size of the moisture-absorbing agent is 2-30 μm, and the dosage is 5-80 g / L. After being impregnated, dried, and baked with the finishing solution, the moisture-absorbing agent is fixed on the surface of the fiber on the skin side, so that the fabric can retain the effective moisture-absorbing agent after multiple washes.

[0043] It should be noted that in this invention, when using cationic modified fiber A1 and modified polyester fiber B1, a two-bath dyeing method is adopted; wherein, in one bath, cationic dye is used to dye the modified polyester fiber B1 and wash it with water, and in the other bath, reactive dye is used to dye the cationic modified fiber A1, and color fixing and soaping treatment are carried out in the finishing stage to reduce the color difference caused by the difference of blended components and improve the color fastness.

[0044] Example 2

[0045] Based on Example 1, the difference between Example 2 and Example 1 is that: the proportion of Lyocell fiber in the first blended yarn is adjusted to 70%, and the proportion of cross-section polyester fiber is adjusted to 30%; the waterborne polyurethane in the finishing solution is 20 g / L, the multifunctional epoxy resin crosslinking agent is 5 g / L, the supported hygroscopic salt is 30 g / L, and the average particle size is 8 μm.

[0046] Example 3

[0047] Based on Example 1, the difference between Example 3 and Example 1 is as follows: the hydrophilic fiber is modal fiber, and both the first and second moisture-wicking synthetic fibers are grooved cross-section polyester fibers; the waterborne polyurethane in the finishing solution is 50 g / L, the multifunctional epoxy resin crosslinking agent is 15 g / L, and the moisture-absorbing agent is 60 g / L of silica gel particles with an average particle size of 20 μm; the baking temperature is 150℃, and the baking time is 90 s.

[0048] Example 4

[0049] Based on Example 1, Example 4 differs from Example 1 in that: it uses lyocell fiber A1 modified with quaternized groups and modified polyester fiber B1 (copolymer modified polyester fiber containing sulfonate groups) that can be dyed with cationic dyes; the dyeing process uses cationic dyes in combination with leveling agents; the hydrophilic polymer in the finishing solution is 40 g / L of water-based acrylic resin, and the crosslinking agent is 12 g / L of polycarboxylic acid crosslinking agent.

[0050] Comparative Example 1

[0051] Based on Example 1, the difference between Comparative Example 1 and Example 1 is that: no durable moisture-wicking finishing is performed, that is, no hydrophilic polymer P, crosslinking agent C and moisture-wicking agent are added, and only pretreatment, dyeing and color-fixing finishing are completed.

[0052] Comparative Example 2

[0053] Based on Example 1, the difference between Comparative Example 2 and Example 1 is that no moisture-absorbing agent is added to the finishing solution, which contains only 30 g / L of waterborne polyurethane and 8 g / L of multifunctional epoxy resin crosslinking agent.

[0054] Comparative Example 3

[0055] Based on Example 1, the difference between Comparative Example 3 and Example 1 is that: no crosslinking agent C is added to the finishing solution, which contains only 30 g / L of waterborne polyurethane and 40 g / L of supported hygroscopic salt; the baking temperature is reduced to 120°C and the baking time is 60 s.

[0056] Comparative Example 4

[0057] Based on Example 4, the difference between Comparative Example 4 and Example 1 is that: a traditional polyester-cotton blend of 60% cotton fiber and 40% ordinary polyester is used, without double-sided knitting, and ordinary single-sided knitting is used without durable moisture-wicking finishing.

[0058] To verify the actual effect of the technical solution of the present invention, a series of performance tests were conducted on the fabric samples prepared in Examples 1 to 4 and Comparative Examples 1 to 4.

[0059] In terms of testing methods, instantaneous water absorption was measured according to GB / T21655.1-2008 standard, which measures the time it takes for water to spread out of the fabric. The smaller the value, the faster the fabric surface can absorb and spread the water. The wicking height was measured according to GB / T21655.2-2009 standard, which observes the distance that water rises along the fibers within 30 minutes, measured in millimeters. The higher the value, the stronger the water migration ability.

[0060] Regarding the continuous perspiration-wicking capability, a key focus of this invention, an MMT moisture management tester was used to simulate heavy sweating by continuously dripping water in a high-humidity environment of 85% relative humidity. The moisture accumulation rate on both sides of the fabric was measured. The lower this percentage, the less likely a wet water film will form on the fabric surface. For dyeing uniformity, a colorimeter was used to measure the color difference value ΔE at five different locations on the fabric. The closer this value is to zero, the more uniform the dyeing; ΔE less than 1.0 is considered excellent.

[0061] To examine the durability of the finishing effect, the sample was washed 20 times according to the household washing procedure given in GB / T8629-2017 standard, and then the instantaneous water absorption and wicking height were retested. The performance retention rate was calculated to determine whether the finishing agent was easy to fall off. The specific test results are shown in Table 1.

[0062] Table 1 - Performance Test Comparison Table

[0063] project Instantaneous water absorption (s) Cubic suction height (mm) Moisture accumulation rate (%) Staining uniformity ΔE Water absorption retention rate (%) after 20 washes wick suction height retention rate (%) after 20 washes Example 1 1.2 85 8.5 0.6 92 90 Example 2 1.5 78 10.2 0.7 89 87 Example 3 1.0 90 7.8 0.8 94 92 Example 4 1.3 82 9.0 0.4 91 89 Comparative Example 1 3.8 45 32.5 1.5 - - Comparative Example 2 2.0 70 18.6 0.9 65 62 Comparative Example 3 1.8 72 15.2 0.8 58 55 Comparative Example 4 4.5 38 38.2 2.3 - -

[0064] As shown in Table 1, Examples 1 to 4 exhibited relatively balanced performance across several core indicators. The water droplet diffusion time was generally controlled between 1.0 and 1.5 seconds, meaning that when sweat comes into contact with the skin, it is quickly absorbed and spreads across the fiber surface, preventing the formation of water droplets. The wicking height reached 78 to 90 mm after 30 minutes, indicating that moisture can migrate smoothly from the skin-contact side to the outside. In continuous dripping tests simulating high humidity and heavy sweating, the moisture accumulation rate of Examples 1 to 4 was only 7.8% to 10.2%, indicating that even under continuous sweating, the fabric's skin-contact side is less prone to forming a damp water film, maintaining a relatively dry state. Furthermore, the color difference values ​​ΔE of these examples were all between 0.4 and 0.8, below the excellent standard of 1.0, indicating that even after applying a hydrophilic film layer and adding moisture-wicking agents to the skin-contact side, the fabric still achieved a relatively stable even dyeing effect, without significant color variations or differences due to post-treatment processes.

[0065] In contrast, Comparative Examples 1 and 4, lacking durable moisture-wicking finishing or not having a double-sided fabric structure, exhibited significantly slower instantaneous water absorption, with drip diffusion times extended to 3.8 seconds and 4.5 seconds, respectively. Their wicking heights were only 45 mm and 38 mm, and their moisture accumulation rates increased to 32.5% and 38.2%. These figures translate to a more comfortable wearing experience, leading to localized dampness and sweat buildup on the skin-contact side. Regarding dyeing uniformity, Comparative Examples 1 and 4 showed color differences of 1.5 and 2.3, respectively, indicating noticeable color unevenness. Comparative Example 2, lacking only a moisture-wicking agent, and Comparative Example 3, lacking only the cross-linking fixation step, while not showing the same dramatic differences in initial indicators as Comparative Examples 1 and 4, still exhibited significantly higher moisture accumulation rates than the examples, at 18.6% and 15.2%, respectively. This demonstrates that relying solely on polymer film formation or salt-based auxiliaries without a supporting system compromises the stability of continuous perspiration wicking.

[0066] More importantly, the results regarding durability were also observed. After 20 washes according to the household washing procedures given by current standards, the instantaneous water absorption retention rate of Examples 1 to 4 remained between 89% and 94%, and the wicking height retention rate was between 87% and 92%. This indicates that the hydrophilic film layer formed by the cross-linking agent can indeed firmly fix the moisture-absorbing agent to the surface of the fiber on the skin side, with minimal performance degradation after washing. In contrast, Comparative Examples 2 and 3 showed performance retention rates of only 65% / 62% and 58% / 55% respectively after 20 washes, a significant decrease. This indicates that without moisture-absorbing agents or without the cross-linking fixation process, the finishing effect is more easily lost during the washing process.

[0067] Based on the test results above, it can be seen that the double-sided structure of this invention, combined with a hydrophilic membrane layer and a moisture-absorbing agent, and the cross-linking fixation technology, can not only achieve faster moisture wicking speed, lower moisture accumulation and better dyeing uniformity, but also maintain relatively stable perspiration performance after multiple household washes, demonstrating a truly reliable technical effect.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A moisture-wicking blended fabric, characterized in that, The moisture-wicking blended fabric is a double-sided fabric with a durable moisture-wicking finish, including the skin-contact side and the outer side. The skin-contact side is made of a first blended yarn, which is obtained by blending hydrophilic fibers and a first moisture-wicking synthetic fiber. The outer side is made of a second yarn, which is spun from a second moisture-wicking synthetic fiber; Wherein, both the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are irregularly shaped cross-section polyester fibers and / or hydrophilic polyester fibers; The durable moisture-wicking finish is used to form a hydrophilic film layer on the skin-contact side of the double-sided fabric to create moisture migration channels; the hydrophilic film layer contains a moisture-wicking agent, which is used to improve the continuous perspiration wicking ability of the double-sided fabric in a humid environment and maintain the evenness and color fastness of the double-sided fabric.

2. The moisture-wicking blended fabric according to claim 1, characterized in that, The hydrophilic fiber is one or more of lyocell fiber, modal fiber, viscose fiber, and cotton fiber; the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are one or more of grooved, cross-shaped, or trilobal cross-section polyester fibers.

3. The moisture-wicking blended fabric according to claim 2, characterized in that, In the first blended yarn, the mass fraction of hydrophilic fiber is 55-80%, and the mass fraction of the first moisture-wicking synthetic fiber is 20-45%. In the second yarn, the mass fraction of the second moisture-wicking synthetic fiber is 70-95%.

4. The moisture-wicking blended fabric according to claim 1, characterized in that, The durable moisture-wicking finishing process involves forming a hydrophilic film layer on the fiber surface, wherein the hydrophilic film layer is formed by reacting and curing a hydrophilic polymer with a crosslinking agent. The hydrophilic polymer is one or more of waterborne polyurethane, waterborne acrylic resin, or polyethylene glycol hydrophilic agent; the crosslinking agent is one or more of polyfunctional epoxy resin, polycarboxylic acid crosslinking agent, or polyisocyanate crosslinking agent.

5. The moisture-wicking blended fabric according to claim 1, characterized in that, The moisture-absorbing aid is an inorganic moisture-absorbing agent particle and / or a supported moisture-absorbing salt; The inorganic desiccant particles are silica gel; The supported hygroscopic salt is formed by loading one or more of magnesium chloride and calcium chloride onto a porous silica carrier. The moisture-wicking agent is fixed to the fiber surface on the skin-contact side through the hydrophilic membrane layer to reduce moisture accumulation on the fabric surface and ensure stable perspiration performance.

6. The moisture-wicking blended fabric according to claim 2, characterized in that, The hydrophilic fiber is a cationic modified fiber; the first moisture-wicking synthetic fiber and the second moisture-wicking synthetic fiber are both modified polyester fibers that can be dyed with cationic dyes. The cationized modified fiber is a cellulose fiber modified by introducing quaternary ammonium groups, and the modified polyester fiber is a copolymerized modified polyester fiber containing sulfonate groups.

7. A process for preparing a moisture-wicking blended fabric, used to prepare the moisture-wicking blended fabric according to any one of claims 1-6, characterized in that, Includes the following steps: The first blended yarn is obtained by blending and spinning hydrophilic fibers and first moisture-wicking synthetic fibers in a set ratio, and the second yarn is spun using second moisture-wicking synthetic fibers. Double-sided knitting is performed using a double-sided knitting machine, so that the first blended yarn forms the skin-contact side and the second yarn forms the outer side, resulting in a double-sided fabric. After pretreatment, the double-sided fabric is dyed and fixed. The double-sided fabric is impregnated with a finishing solution containing a hydrophilic polymer, a crosslinking agent, and a moisture-wicking agent, and then dried and baked for crosslinking, so that a hydrophilic film layer containing a moisture-wicking agent is formed on the surface of the fiber on the skin side, thereby obtaining a moisture-wicking blended fabric.

8. The process for preparing a moisture-wicking blended fabric according to claim 7, characterized in that, The finishing solution contains a hydrophilic polymer with a mass fraction of 10-60 g / L and a crosslinking agent with a mass fraction of 2-20 g / L. The drying temperature is 90-120℃, the baking temperature is 140-175℃, and the baking time is 30-120s; The baking crosslinking is used to cause the functional groups of the crosslinking agent to react chemically with the active groups on the fiber surface to form a stable covalent bond.

9. The process for preparing a moisture-wicking blended fabric according to claim 7, characterized in that, The double-sided knitting process includes a yarn-adding structure, specifically: a first blended yarn is added as a yarn-adding loop to the skin-contact side, so that the surface coverage of the first blended yarn on the skin-contact side is greater than the surface coverage of the second yarn on the outer side.

10. The process for preparing a moisture-wicking blended fabric according to claim 7, characterized in that, The average particle size of the moisture-absorbing agent is 2-30 μm, and the dosage is 5-80 g / L; The moisture-absorbing agent is fixed on the surface of the fiber on the skin side after being impregnated, dried and baked with the finishing liquid, so that the fabric can retain the moisture-absorbing agent effectively after multiple washes.

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