A unidirectional moisture-conducting functional fabric, its preparation process and application

Abstract

The present application relates to the technical field of moisture-conducting functional fabrics, specifically disclosing a one-way moisture-conducting functional fabric, its preparation process, and its application. A preparation process for a one-way moisture-conducting functional fabric comprises the following steps: S1: hydrophobic finishing: evenly applying a hydrophobic finishing agent to one side of the fabric surface, which forms a hydrophobic layer after drying; S2: gradient pretreatment: preparing a gradient guiding liquid, then placing the fabric after the hydrophobic finishing in step S1 into the gradient guiding liquid for padding, drying, and setting aside; S3: hydrophilic finishing: taking the fabric treated in step S2, laying it flat in a dish-shaped container with one side of the hydrophobic layer at the top, then adding a hydrophilic finishing agent to the dish-shaped container, letting it stand for 35-50 minutes, then washing and drying. The gradient guiding liquid is mainly made of the following raw materials in parts by weight: water, hydrogel, DMSO, and N,N-dimethylbisacrylamide. The one-way moisture-conducting functional fabric of the present application has the advantage of good gradient moisture-conducting effect.

Description

Technical Field

[0001] The present application relates to the technical field of moisture-conducting functional fabrics, and more specifically, to a one-way moisture-conducting functional fabric and its preparation process and application. Background Art

[0002] Currently, most traditional moisture-absorbing and quick-drying fabrics use special-shaped, ultra-fine fibers that do not absorb moisture themselves. They use the grooves on the fiber surface and the capillary effect of the ultra-fine fiber bundles to allow sweat to be conducted on the fibers and evaporate through the larger surface area of the fabric, thereby playing a certain role in moisture conduction and perspiration removal.

[0003] When human skin produces a large amount of sweat, traditional moisture-absorbing and quick-drying fabrics cannot quickly drain the sweat away. In fact, due to the similar moisture conduction performance inside and outside the fabric, sweat may even flow back, causing the fabric to stick to the skin and cause discomfort.

[0004] To this end, technicians have developed unidirectional moisture-conducting fabrics that unidirectionally conduct sweat from the inner layer of the fabric in contact with the skin to the outer layer, allowing it to evaporate rapidly on the outer surface. This also inhibits the backflow and re-seepage of sweat from the outer layer, thereby keeping the inner skin dry and fresh, and maintaining the moisture and heat balance in the microenvironment between human skin and fabric. There are many ways to achieve unidirectional moisture-conducting fabrics. For example, the fabric structure design uses a rational interweaving and distribution of hydrophilic and hydrophobic fibers to achieve unidirectional moisture conduction on the inside and outside of the fabric. For example, a finishing process can be used to treat the fabric with a finishing agent, imparting different hydrophilic and hydrophobic properties on both sides of the fabric to achieve unidirectional moisture conduction.

[0005] For the above-mentioned one-way moisture conduction method, when the fabric is subjected to double-sided hydrophilic and hydrophobic finishing, the finishing agent is easily unevenly distributed in thickness, and the gradient effect is poor. When moisture is conducted from the inside of the fabric to the outside, wicking and liquid conduction are also unbalanced, which makes the overall moisture conduction effect of the fabric worse. Summary of the Invention

[0006] In order to improve the problem of poor gradient effect inside and outside the fabric, the present application provides a one-way moisture-conducting functional fabric and its preparation process and application.

[0007] In a first aspect, the present application provides a process for preparing a one-way moisture-conducting functional fabric, which adopts the following technical solution: A process for preparing a one-way moisture-conducting functional fabric comprises the following steps:

[0008] S1: Hydrophobic finishing: Apply a hydrophobic finishing agent evenly on one side of the fabric to form a hydrophobic layer after drying;

[0009] S2: Gradient pretreatment: prepare a gradient guiding liquid, and then place the fabric after the hydrophobic treatment in step S1 into the gradient guiding liquid for padding, and then dry it for later use;

[0010] S3: Hydrophilic finishing: Lay the fabric treated in step S2 flat in a dish-shaped container with the hydrophobic layer on top. Then add a hydrophilic finishing agent to the dish-shaped container, let it stand for 35-50 minutes, then wash and dry.

[0011] The gradient guiding solution is mainly made of the following raw materials in parts by weight: 80-100 parts of water, 20-30 parts of hydrogel, 5-10 parts of DMSO, and 3-6 parts of N,N-dimethylbisacrylamide.

[0012] By adopting the above technical solution, one side of the fabric surface is first subjected to hydrophobic finishing to form a hydrophobic layer, so that the hydrophobic layer side serves as the skin contact side, which can have a very good moisture-conducting effect on sweat. Then after dipping in the gradient guiding liquid, the DMSO and N,N-dimethylbisacrylamide in the guiding liquid promote the uniform diffusion of the hydrogel component into the interior of the fabric. After drying, the hydrogel can be evenly wrapped on the outside of the fiber bundle to form a closed layer, and then hydrophilic finishing is performed. At this time, the fabric is in a flat state, and the hydrophobic layer is located on the top. The hydrophilic components in the hydrophilic finishing agent will gradually move upward with the diffusion of the liquid and the water absorption of the fabric. At the same time, the hydrogel components in the closed layer will gradually dissolve and re-diffuse. As the closed layer continues to dissolve and peel off, the hydrophilic components will react with the hydroxyl groups on the fiber surface. Moreover, due to the different order of dissolution of the highly closed layers of the fabric, a hydrophilic gradient is formed in the thickness direction of the fabric, thereby obtaining a uniform wicking effect and diversion effect, which can produce an obvious, stable and uniform wetting gradient effect from the hydrophobic layer side to the hydrophilic side, accelerate the diffusion and evaporation efficiency of sweat, and greatly improve the unidirectional moisture conduction and perspiration function of the fabric.

[0013] Preferably, the hydrogel is one of PVA hydrogel, polypeptide hydrogel, polyacrylamide hydrogel and sodium alginate hydrogel.

[0014] By adopting the above technical solutions, the type composition of the hydrogel is optimized and adjusted, the ratio of hydrophilic groups and hydrophobic groups on the molecular chain is adjusted, the cross-linking state of the closed layer is improved, the water absorption and swelling properties of the hydrogel in high-salt solution are improved, the interfacial mass transfer efficiency of the closed layer is enhanced, and material exchange with the hydrophilic components can be carried out in a timely manner.

[0015] Preferably, the hydrogel is composed of PVA hydrogel and sodium alginate hydrogel in a mass ratio of (15-20): (3.5-5).

[0016] By adopting the above technical solution, the composition ratio of the hydrogel was further tested and screened, and a larger proportion of PVA hydrogel was used with a smaller proportion of sodium alginate hydrogel to adjust the cross-linking strength and cross-linking state of the closed layer, reduce the formation of the bulk network structure, obtain a better dissolution state with suitable mechanical properties, and obtain a more uniform hydrophilicity gradient.

[0017] Preferably, the swelling ratio of the PVA hydrogel is 650-900%.

[0018] By adopting the above technical solution, the swelling rate of PVA hydrogel is optimized and adjusted, the influence of dissolved salt molecules in the solution on the dissolution behavior of the closed layer is reduced, the hydrogen bond association between PVA macromolecular chains is weakened, and the orientation between the macromolecular chains in the closed layer is reduced, which is conducive to the entry of water molecules into the closed layers, thereby improving the solvation and water absorption capacity, and enabling the hydrophilic components to be combined with the fibers in an orderly and stable manner.

[0019] Preferably, in the dish-shaped container, the ratio of the liquid level of the hydrophilic finishing agent to the thickness of the fabric is (0.2-0.35):1.

[0020] By adopting the above technical solution, the liquid level of the hydrophilic finishing agent is adjusted so that the speed at which the liquid rises along the fabric is more adapted to the dissolution rate of the sealing layer and the binding rate between the hydrophilic component and the fiber, thereby obtaining a more uniform hydrophilic gradient effect in the thickness direction of the fabric.

[0021] Preferably, the thickness of the hydrophobic layer is 5-10 μm.

[0022] By adopting the above technical solution, the thickness of the hydrophobic layer is optimized and adjusted, and the residence time of sweat moisture on the hydrophobic side of the fabric is regulated, so that the moisture is promptly transferred and diffused to the hydrophilic side of the fabric, thereby generating a stronger pressure difference, accelerating the evaporation of moisture on the hydrophilic side of the fabric, and further enhancing the unidirectional moisture conduction and perspiration wicking effect of the fabric.

[0023] Preferably, the mass ratio of the hydrogel to DMSO is (2-3.5):1.

[0024] By adopting the above technical solution, the mass ratio of hydrogel and DMSO is optimized and adjusted, the swelling and dissolution-promoting effects of DMSO molecules on hydrogel are balanced, the activation and accessibility of hydroxyl groups in the hydrogel molecular system are improved, and the phenomenon of excessive hydrogen bonding between macromolecules in the hydrogel system causing a decrease in water absorption capacity is reduced.

[0025] Preferably, the raw materials of the gradient guiding liquid further include 1-1.5 parts by weight of urea.

[0026] By adopting the above technical solution and adding an appropriate urea component, the intermolecular hydrogen bonds within the hydrogel system are further weakened, allowing water molecules to enter more deeply, enhancing water absorption and mass transfer. Furthermore, the introduction of hydrophilic groups improves the overall hydrophilicity, facilitating the bonding between the hydrophilic component and the fiber.

[0027] In a second aspect, the present application provides a one-way moisture-conducting functional fabric, which adopts the following technical solution:

[0028] A one-way moisture-conducting functional fabric is prepared by adopting the above-mentioned preparation process.

[0029] On the third aspect, the present application provides an application of a one-way moisture-conducting functional fabric for use in labor clothing, sports clothing, medical clothing, military clothing, etc.

[0030] By adopting the above technical solution, the one-way moisture-conducting functional fabric of the present application has a stronger one-way moisture-conducting effect, and has a more uniform moisture gradient effect on the spatial scale of the fabric, and is more comfortable to wear.

[0031] In summary, this application has the following beneficial effects:

[0032] 1. Since the present application adopts hydrophilic and hydrophobic modification on both sides of the fabric, a unidirectional moisture conduction effect is formed. At the same time, under the action of the gradient guide liquid, a uniform hydrophilic gradient is formed in the thickness direction of the fabric, thereby obtaining a relatively stable wicking effect, liquid conduction effect and wet gradient effect, which greatly improves the moisture absorption and perspiration effect of the fabric.

[0033] 2. In this application, the composite hydrogel components are preferably used, and the regulating effects of DMSO, N,N-dimethylbisacrylamide and urea are used to improve the solubility, swelling and hydrophilicity of the hydrogel system, thereby obtaining a more uniform hydrophilic gradient.

[0034] 3. The one-way moisture-conducting functional fabric prepared by the preparation process of the present application has better one-way moisture-conducting and perspiration-wicking effect. DETAILED DESCRIPTION

[0035] The present application is further described in detail below with reference to the embodiments.

[0036] Unless otherwise specified, the raw materials used in the examples and comparative examples of the present application are all commercially available.

[0037] Example

[0038] Example 1

[0039] The preparation process of the one-way moisture-conducting functional fabric of this embodiment includes the following steps:

[0040] S1: Hydrophobic finishing: A cotton fabric weighing 200 g / m2 was cleaned and evenly coated with a hydrophobic finishing agent at a rate of 30 g / m2 on one side of the fabric using a sprayer. The fabric was then placed in a dryer and dried at 150°C to form a hydrophobic layer having a thickness of 10 μm. The hydrophobic finishing agent was a non-ionic fluorinated hydrophobic finishing agent, model SK-FL660. S2: Gradient pretreatment: A gradient guiding liquid was prepared, and the fabric after the hydrophobic finishing in step S1 was then placed in the gradient guiding liquid for padding, with a padding rate of 80%. The fabric was then dried and set aside.

[0041] S3: Hydrophilic finishing: The fabric treated in step S2 was laid flat on a dish-shaped stainless steel tray with the hydrophobic layer on top. A hydrophilic finishing agent, PSO-5500 produced by Kotani Chemical Industries, Ltd. of Japan, was added to the dish-shaped stainless steel tray at a concentration of 25 g / L to a liquid level that was 50% of the fabric thickness. The fabric was allowed to stand for 35 minutes, then rinsed with deionized water and dried in a setting machine at 180°C.

[0042] The gradient guiding solution of this embodiment is prepared from the following raw materials by weight: 80 kg of water, 30 kg of hydrogel, 5 kg of DMSO, and 3 kg of N,N-dimethylbisacrylamide.

[0043] The hydrogel is PVA hydrogel with a solid content of 15% and a swelling rate of 900%.

[0044] The one-way moisture-conducting functional fabric of this embodiment is prepared by the above-mentioned preparation process.

[0045] The one-way moisture-conducting functional fabric of this embodiment can be used in labor clothing, sports clothing, medical clothing, and military clothing.

[0046] Example 2

[0047] The preparation process of the one-way moisture-conducting functional fabric of this embodiment includes the following steps:

[0048] S1: Hydrophobic finishing: A cotton fabric weighing 200 g / m2 was cleaned and a hydrophobic finishing agent was evenly applied to one side of the fabric using a sprayer at a rate of 10 g / m2. The fabric was then placed in a dryer and dried at 150°C to form a hydrophobic layer having a thickness of 5 μm. The hydrophobic finishing agent was a non-ionic fluorinated hydrophobic finishing agent, model SK-FL660. S2: Gradient pretreatment: A gradient guiding liquid was prepared, and the fabric after the hydrophobic finishing in step S1 was then placed in the gradient guiding liquid for padding, with a padding rate of 80%. The fabric was then dried and set aside.

[0049] S3: Hydrophilic finishing: The fabric treated in step S2 was laid flat on a dish-shaped stainless steel tray with the hydrophobic layer on top. A hydrophilic finishing agent, PSO-5500 produced by Kotani Chemical Industries, Ltd. of Japan, was added to the dish-shaped stainless steel tray at a concentration of 25 g / L to a liquid level that was 50% of the fabric thickness. The fabric was allowed to stand for 50 minutes, then rinsed with deionized water and dried in a setting machine at 180°C.

[0050] The gradient guiding solution of this embodiment is prepared from the following raw materials by weight: 100 kg of water, 20 kg of hydrogel, 10 kg of DMSO, and 6 kg of N,N-dimethylbisacrylamide.

[0051] The hydrogel is PVA hydrogel with a solid content of 15% and a swelling rate of 650%.

[0052] The one-way moisture-conducting functional fabric of this embodiment is prepared by the above-mentioned preparation process.

[0053] The one-way moisture-conducting functional fabric of this embodiment can be used in labor clothing, sports clothing, medical clothing, and military clothing.

[0054] Example 3

[0055] The preparation process of the one-way moisture-conducting functional fabric of this embodiment includes the following steps:

[0056] S1: Hydrophobic finishing: A cotton fabric weighing 200 g / m2 was cleaned and a hydrophobic finishing agent was evenly applied to one side of the fabric using a sprayer at a rate of 20 g / m2. The fabric was then placed in a dryer and dried at 150°C to form a hydrophobic layer having a thickness of 8 μm. The hydrophobic finishing agent was a non-ionic fluorinated hydrophobic finishing agent, model SK-FL660. S2: Gradient pretreatment: A gradient guiding liquid was prepared, and the fabric after the hydrophobic finishing in step S1 was then placed in the gradient guiding liquid for padding, with a padding rate of 80%. The fabric was then dried and set aside.

[0057] S3: Hydrophilic finishing: The fabric treated in step S2 was laid flat on a dish-shaped stainless steel tray with the hydrophobic layer on top. A hydrophilic finishing agent, PSO-5500 produced by Kotani Chemical Industries, Ltd. of Japan, was added to the dish-shaped stainless steel tray at a concentration of 25 g / L to a liquid level that was 50% of the fabric thickness. The fabric was allowed to stand for 40 minutes, then rinsed with deionized water and dried in a setting machine at 180°C.

[0058] The gradient guiding solution of this embodiment is prepared from the following raw materials by weight: 90 kg of water, 25 kg of hydrogel, 7 kg of DMSO, and 5 kg of N,N-dimethylbisacrylamide.

[0059] The hydrogel is PVA hydrogel with a solid content of 15% and a swelling rate of 700%.

[0060] The one-way moisture-conducting functional fabric of this embodiment is prepared by the above-mentioned preparation process.

[0061] The one-way moisture-conducting functional fabric of this embodiment can be used in labor clothing, sports clothing, medical clothing, and military clothing.

[0062] Example 4

[0063] The preparation process of the one-way moisture-conducting functional fabric of this embodiment differs from that of Example 3 in that:

[0064] Among the raw materials of the gradient guiding fluid of this embodiment, the hydrogel is composed of polypeptide hydrogel and polyacrylamide hydrogel in a mass ratio of 3:1, and the rest is the same as that of Example 3.

[0065] The polypeptide hydrogel is octreotide polypeptide hydrogel, and the effective solid content is adjusted to 15%. The solid content of the polyacrylamide hydrogel is 15%.

[0066] Example 5

[0067] The preparation process of the one-way moisture-conducting functional fabric of this embodiment differs from that of Example 3 in that:

[0068] Among the raw materials of the gradient guiding fluid of this embodiment, the hydrogel is composed of PVA hydrogel and sodium alginate hydrogel in a mass ratio of 20:3.5, and the rest is the same as that of Example 3.

[0069] The solid content of the PVA hydrogel is 15%, the swelling rate is 700%, and the solid content of the sodium alginate hydrogel is 15%.

[0070] Example 6

[0071] The preparation process of the one-way moisture-conducting functional fabric of this embodiment differs from that of Example 3 in that:

[0072] Among the raw materials of the gradient guiding fluid of this embodiment, the hydrogel is composed of PVA hydrogel and sodium alginate hydrogel in a mass ratio of 15:5, and the rest is the same as that of Example 3.

[0073] The solid content of the PVA hydrogel is 15%, the swelling rate is 700%, and the solid content of the sodium alginate hydrogel is 15%.

[0074] Example 7

[0075] The preparation process of the one-way moisture-conducting functional fabric of this embodiment is different from that of Example 6 in that: in step S3, the ratio of the liquid level of the hydrophilic finishing agent added to the fabric thickness is 0.2:1, and the rest is the same as that of Example 6.

[0076] Example 8

[0077] The preparation process of the one-way moisture-conducting functional fabric of this embodiment is different from that of Example 6 in that: in step S3, the ratio of the liquid level of the hydrophilic finishing agent added to the fabric thickness is 0.35:1, and the rest is the same as that of Example 6.

[0078] Example 9

[0079] The preparation process of the one-way moisture-conducting functional fabric of this embodiment differs from that of Example 8 in that:

[0080] In this embodiment, 1 kg of urea was further added to the raw materials of the gradient guiding liquid, and the rest was the same as in Example 8.

[0081] Example 10

[0082] The preparation process of the one-way moisture-conducting functional fabric of this embodiment differs from that of Example 8 in that:

[0083] In this embodiment, 1.5 kg of urea was further added to the raw materials of the gradient guiding liquid, and the rest was the same as in Example 8.

[0084] Comparative Example

[0085] Comparative Example 1

[0086] The preparation process of the one-way moisture-conducting functional fabric of this comparative example comprises the following steps:

[0087] S1: Hydrophobic finishing: A cotton fabric weighing 200 g / m2 was first cleaned, and a hydrophobic finishing agent was evenly applied to one side of the fabric using a spray machine at a liquid volume of 30 g / m2. The fabric was then placed in a dryer and dried at 150°C to form a hydrophobic layer with a thickness of 10 μm. The hydrophobic finishing agent was a non-ionic fluorinated hydrophobic finishing agent, model SK-FL660. S2: Hydrophilic finishing: The fabric treated in step S1 was laid flat on a dish-shaped stainless steel tray with one side of the hydrophobic layer at the top. A hydrophilic finishing agent, PSO-5500 produced by Kotani Chemical Industry Co., Ltd. of Japan, was then added to the dish-shaped stainless steel tray at a concentration of 25 g / L. The added liquid level accounted for 50% of the fabric thickness. The fabric was allowed to stand for 35 minutes, then rinsed with deionized water, and dried in a setting machine at a temperature of 180°C.

[0088] Comparative Example 2

[0089] The preparation process of the one-way moisture-conducting functional fabric of this comparative example is different from that of Example 1 in that:

[0090] The gradient guiding solution of this comparative example was prepared from the following raw materials by weight: 110 kg of water, 5 kg of DMSO, and 3 kg of N,N-dimethylbisacrylamide.

[0091] Comparative Example 3

[0092] The preparation process of the one-way moisture-conducting functional fabric of this comparative example is different from that of Example 1 in that:

[0093] The gradient guiding liquid of this comparative example is made from the following raw materials by weight: 88 kg of water and 30 kg of hydrogel.

[0094] The hydrogel is PVA hydrogel with a solid content of 15% and a swelling rate of 900%.

[0095] Comparative Example 4

[0096] The preparation process of the one-way moisture-conducting functional fabric of this comparative example is different from that of Example 1 in that:

[0097] The gradient guiding solution of this comparative example was prepared from the following raw materials by weight: 80 kg of water, 30 kg of starch, 5 kg of DMSO, and 3 kg of N,N-dimethylbisacrylamide.

[0098] Comparative Example 5

[0099] The preparation process of the one-way moisture-conducting functional fabric of this comparative example is different from that of Example 1 in that:

[0100] The gradient guiding liquid of this comparative example was prepared from the following raw materials by weight: 80 kg of water, 30 kg of nano-silica, 5 kg of DMSO, and 3 kg of N,N-dimethylbisacrylamide.

[0101] Performance testing

[0102] Detection method

[0103] The unidirectional moisture conduction functional fabrics of Examples 1-10 and Comparative Examples 1-5 were tested for unidirectional transmission index according to AATCC195-2009 and were divided into grades 1-5, with grade 5 being the best. Ten test points were randomly selected for each fabric, the average value was taken, and the variance was calculated. The test results are shown in Table 1.

[0104] Table 1 Performance test data of one-way moisture conduction functional fabrics of Examples 1-10 and Comparative Examples 1-5

[0105]

[0106]

[0107] Analysis of Examples 1-3 and Comparative Example 1, combined with Table 1, reveals that treating the fabric with a gradient-guided liquid guides the hydrophilic component to form bonds with the fibers at an appropriate rate along the thickness of the fabric, creating a stable and uniform spatial hydrophilic gradient. This not only enhances the fabric's wicking and liquid-conducting effects, but also creates a wetting gradient within the fabric, significantly improving the fabric's unidirectional moisture conduction. Furthermore, the moisture conduction effect in all directions of the fabric is relatively uniform and similar. Comparative Example 1, which did not undergo a gradient treatment, exhibited some moisture conduction performance, but exhibited poor overall moisture conduction uniformity and uneven moisture conduction.

[0108] Analysis of Examples 4-6 and Comparative Examples 2-5, combined with Table 1, reveals that optimizing and adjusting the type and ratio of hydrogel improves the swelling, dissolution, and hydrophilicity of the fiber surface sealing layer, better aligning the mass transfer and bonding between the hydrophilic component and the fiber, and resulting in a more spatially balanced hydrophilic gradient. Comparative Example 2, however, lacks the addition of hydrogel, resulting in no hydrophilic gradient formation. Furthermore, the hydrogen bonding competition between DMSO and N,N-dimethylbisacrylamide leads to a decrease in the fabric's unidirectional moisture conduction performance. Comparative Example 3, in which only hydrogel is added, fails to form a complete sealing layer structure, providing poor buffering between the fiber and the hydrophilic component. This prevents the hydrophilic component from forming a stable bond with the fiber, resulting in poor unidirectional moisture conduction performance. Comparative Examples 4 and 5, respectively, use starch and nano-silica as sealing layer materials. Due to starch's poor hydrophilicity and film-forming properties, uneven adsorption of the hydrophilic component onto the fiber surface occurs, preventing the formation of a wetting gradient effect. Nano-silica exhibits good dispersion properties, but poor adhesion and mass transfer, resulting in an unbalanced hydrophilic gradient.

[0109] Analysis of Examples 7-8 and Examples 9-10 in combination with Table 1 shows that optimizing and adjusting the liquid level of the hydrophilic finishing agent and adding an appropriate amount of urea improves the diffusion and binding state of the hydrophilic component in the fabric, further enhancing the wet gradient effect of the fabric and achieving a better and more uniform unidirectional moisture absorption and perspiration effect.

[0110] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A process for preparing a one-way moisture-conducting functional fabric, characterized in that: The steps include: S1: Hydrophobic finishing: Apply a hydrophobic finishing agent evenly on one side of the fabric to form a hydrophobic layer after drying; S2: Gradient pretreatment: prepare a gradient guiding liquid, and then place the fabric after the hydrophobic treatment in step S1 into the gradient guiding liquid for padding, and then dry it for later use; S3: Hydrophilic finishing: Lay the fabric treated in step S2 flat in a dish-shaped container with the hydrophobic layer on top. Then add a hydrophilic finishing agent to the dish-shaped container, let it stand for 35-50 minutes, then wash and dry. The gradient guiding solution is mainly made of the following raw materials in parts by weight: 80-100 parts of water, 20-30 parts of hydrogel, 5-10 parts of DMSO, and 3-6 parts of N,N-dimethylbisacrylamide; The hydrogel includes PVA hydrogel; The swelling rate of the PVA hydrogel is 650-900%; In the dish-shaped container, the ratio of the liquid level of the hydrophilic finishing agent to the thickness of the fabric is (0.2-0.35):

1.

2. The process for preparing a one-way moisture-conducting functional fabric according to claim 1, characterized in that: The hydrogel further comprises at least one of polypeptide hydrogel, polyacrylamide hydrogel and sodium alginate hydrogel.

3. The process for preparing a one-way moisture-conducting functional fabric according to claim 1, characterized in that: The hydrogel is composed of PVA hydrogel and sodium alginate hydrogel in a mass ratio of (15-20): (3.5-5).

4. The process for preparing a one-way moisture-conducting functional fabric according to claim 1, characterized in that: The thickness of the hydrophobic layer is 5-10 μm.

5. The process for preparing a one-way moisture-conducting functional fabric according to claim 1, characterized in that: The mass ratio of the hydrogel to DMSO is (2-3.5):

1.

6. The process for preparing a one-way moisture-conducting functional fabric according to claim 1, characterized in that: The raw materials of the gradient guiding liquid also include 1-1.5 parts by weight of urea.

7. A one-way moisture-conducting functional fabric, characterized in that: The method is prepared by the preparation process described in any one of claims 1 to 6.

8. An application of the one-way moisture-conducting functional fabric according to claim 7, characterized in that: Used for labor clothing, sports clothing, medical clothing, and military clothing.

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