Wet swelling material, wet breathable fabric and clothes

Abstract

The invention provides a wet swelling material, a wet breathable fabric and a garment, the wet swelling material comprises the following components by weight: 20-40 parts of a hydrophilic polymer, 20-40 parts of a thermoplastic polymer, 10-20 parts of a curing agent and 5-20 parts of a reinforcing filler. The thermoplastic polymer in the wet expansion material can provide flexible support and mechanical strength, and the reinforcing filler can improve the durability and accelerate the wet expansion response speed.

Description

Technical Field

[0001] The present application relates to the field of textile materials, and specifically, to a swelling material, a moisture-permeable fabric when wet, and a garment. Background Art

[0002] In the fields of sportswear and outdoor clothing, swelling materials are used to achieve functions such as breathability and special appearance. However, the mechanical strength of the swelling materials is not ideal enough, resulting in a significant reduction in the mechanical strength of the fabric when applied to the fabric. Summary of the Invention

[0003] In view of this, the present invention provides a swelling material, a moisture-permeable fabric when wet, and a garment to at least partially solve the above problems.

[0004] The first aspect of the present invention provides a swelling material, which, by weight, comprises the following components: 20-40 parts of a hydrophilic polymer, 20-40 parts of a thermoplastic polymer, 10-20 parts of a curing agent, and 5-20 parts of a reinforcing filler.

[0005] Optionally, by weight, the hydrophilic polymer comprises the following components: 10-30 parts of a functional monomer containing an amphiphilic molecular chain segment, 5-20 parts of a bio-based acrylic monomer containing a crosslinking group, 30-50 parts of a bio-based acrylate soft monomer, 0-25 parts of a bio-based acrylate hard monomer, 2-4 parts of an initiator, 0.5-1.5 parts of a bio-based chain transfer agent, and 100-200 parts of water or a bio-based organic solvent.

[0006] Optionally, the functional monomer containing an amphiphilic molecular chain segment is prepared by an esterification reaction of itaconic acid with at least one of polyvinyl alcohol, polyethylene glycol, and carboxymethyl cellulose; the bio-based acrylic monomer containing a crosslinking group includes at least one of chitosan-modified acrylic acid and citric acid-modified acrylic acid; the bio-based acrylate soft monomer includes at least one of butyl acrylate, isooctyl acrylate, ethyl acrylate, n-octyl acrylate, and dodecyl acrylate; the acrylate hard monomer includes at least one of methyl methacrylate, ethyl methacrylate, tert-butyl methacrylate, isobornyl methacrylate, and isobornyl acrylate; the initiator includes at least one of azobisisobutyronitrile, azobis(2,4-dimethylvaleronitrile), and azoisobutyronitrile formamide; the bio-based chain transfer agent includes at least one of mercaptoacetic acid and chitosan mercapto derivatives.

[0007] Optionally, the thermoplastic polymer includes at least one of thermoplastic polyurethane and polyurethane; the curing agent includes at least one of glutaraldehyde, azelaic acid, amino resin curing agent, chitosan curing agent, and bio-based curing agent; the reinforcing filler includes silica nanoparticles.

[0008] Optionally, the hydrophilic polymer is prepared by the following method: uniformly mixing the initiator, the functional monomer containing an amphiphilic molecular segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic soft monomer, the bio-based acrylic hard monomer, and the bio-based chain transfer agent to obtain a mixed solution; heating the water or the bio-based organic solvent to 75-80°C, dropping the mixed solution, and carrying out a heat preservation reaction. The reaction is terminated when the monomer conversion rates of the functional monomer containing an amphiphilic molecular segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic soft monomer, and the bio-based acrylic hard monomer are greater than or equal to 90%, and the temperature is lowered to 40-50°C to obtain a reaction product; drying the reaction product in a vacuum oven to obtain the hydrophilic polymer.

[0009] Optionally, in the process of preparing the hydrophilic polymer: the duration of dropping the mixed solution is 3-4 hours; the duration of carrying out the heat preservation reaction is 1-3 hours.

[0010] Optionally, in the process of preparing the hydrophilic polymer: the duration of drying the reaction product in a vacuum oven is greater than or equal to 24 hours.

[0011] The second aspect of the present invention provides a moisture-permeable and breathable fabric, comprising: a base layer; a plurality of locally separated structures are formed on the base layer, and a swelling layer is arranged on the inner side surface of the base layer at the locally separated structures, and the swelling layer is prepared by any one of the swelling materials in the first aspect of the embodiment; when the swelling layer swells upon contact with moisture, the swelling layer and the locally separated structure in contact with the swelling layer deform towards the outer side surface of the base layer to form breathable through holes.

[0012] Optionally, the distance between adjacent locally separated structures among the plurality of locally separated structures is greater than or equal to 2 mm.

[0013] Optionally, the size of the minimum circumscribed rectangle of the projection of each locally separated structure among the plurality of locally separated structures on the moisture-permeable and breathable fabric is 3 mm * 5 mm.

[0014] Optionally, the projection of the locally separated structure on the moisture-permeable and breathable fabric includes at least one of strip-shaped, grid-shaped, scale-shaped, and dot-matrix-shaped.

[0015] Optionally, the moisture-permeable and breathable fabric is prepared by the following method: locally separated structures are formed on the moisture-permeable fabric by a punching process; any one of the swelling materials in the first aspect of the embodiment is fixed on the locally separated structures on the inner side surface of the base layer to form the swelling layer.

[0016] Optionally, the process of forming the swelling layer by fixing the swelling material as described in any of the first aspects of the embodiments on the local separation structure on the inner side of the base layer may further include: laying the swelling material on the local separation structure on the inner side of the base layer by hot pressing, printing or spraying, wherein the hot pressing temperature is 120°C to 160°C, the hot pressing pressure is 1.5 MPa, and the hot pressing duration is 30 seconds.

[0017] The third aspect of the present invention provides a piece of clothing, which is prepared from the moisture-permeable fabric as described in any of the second aspects of the embodiments, and at least one area on the clothing is provided with a local separation structure.

[0018] In the embodiments of the present application, the thermoplastic polymer in the swelling material can provide flexible support and mechanical strength, and the reinforcing filler can improve durability and accelerate the swelling response speed. Therefore, when the swelling material is applied to the fabric, the mechanical strength of the fabric will not be significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0020] Figure 1 Schematic diagram of the moisture-permeable fabric in a dry state according to an embodiment of the present application;

[0021] Figure 2 Schematic diagram of the moisture-permeable fabric in a wet state according to an embodiment of the present application;

[0022] Figure 3 Schematic diagram of the local separation structure in a wet state according to an embodiment of the present application;

[0023] Figure 4 Schematic diagram of the swelling of the swelling layer provided by the embodiments of the present application;

[0024] Figure 5 Schematic diagram of the moisture-permeable fabric for ventilation provided by the embodiments of the present application;

[0025] Figure 6 Schematic diagrams of the front and back sides of a T-shirt prepared from the moisture-permeable fabric provided by the embodiments of the present application;

[0026] Figure 7 Schematic diagrams of the front and back sides of a vest prepared from the moisture-permeable fabric provided by the embodiments of the present application;

[0027] Figure 8 It is a front and back schematic diagram of a skin-friendly clothing made of a moisture-permeable fabric provided by an embodiment of the present application;

[0028] Figure 9 It is a front and back schematic diagram of a windbreaker made of a moisture-permeable fabric provided by an embodiment of the present application. Detailed implementation manners

[0029] Embodiments of the present disclosure will be described in more detail below. It should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0030] Note that the titles of any sections / subsections provided herein are not restrictive. Various embodiments are described throughout this document, and any type of embodiment can be included under any section / subsection. In addition, the embodiments described in any section / subsection can be combined with any other embodiments described in the same section / subsection and / or different sections / subsections in any manner.

[0031] In the description of the embodiments of the present disclosure, the term "including" and its like should be understood as an open inclusion, that is, "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". There may be other explicit and implicit definitions hereinafter. The terms "first", "second", etc. may refer to different or the same objects. There may be other explicit and implicit definitions hereinafter.

[0032] The embodiments of the present disclosure may involve user data, data acquisition and / or use, etc. These aspects all comply with the corresponding laws, regulations and related provisions. In the embodiments of the present disclosure, all data collection, acquisition, processing, processing, forwarding, use, etc. are carried out on the premise that the user is aware and confirms. Accordingly, when implementing the embodiments of the present disclosure, the types, usage scopes, usage scenarios, etc. of the data or information that may be involved should be informed to the user and the user's authorization should be obtained through appropriate means according to the relevant laws and regulations. The specific informing and / or authorization methods may vary according to the actual situation and application scenarios, and the scope of the present disclosure is not limited in this regard.

[0033] The raw materials used in the embodiments are all commercially available unless otherwise specified.

[0034] An embodiment of the present application provides a swelling material. By weight, the swelling material comprises the following components: 20 - 40 parts of a hydrophilic polymer, 20 - 40 parts of a thermoplastic polymer, 10 - 20 parts of a curing agent, and 5 - 20 parts of a reinforcing filler.

[0035] The hydrophilic polymer is used for water absorption and swelling. The thermoplastic polymer is used to provide flexible support and mechanical strength. The crosslinking agent or curing agent is used to control the crosslinking degree and swelling rate of the hydrophilic polymer and the thermoplastic polymer. The reinforcing filler is used to improve durability and accelerate the swelling response speed. Therefore, the thermoplastic polymer in the swelling material can provide flexible support and mechanical strength, and the reinforcing filler can improve durability and accelerate the swelling response speed. Thus, when the swelling material is applied to the fabric, it will not significantly reduce the mechanical strength of the fabric.

[0036] In a possible implementation manner, by weight, the hydrophilic polymer comprises the following components:

[0037] 10 - 30 parts of a functional monomer containing an amphiphilic molecular segment, 5 - 20 parts of a bio - based acrylic monomer containing a cross - linking group, 30 - 50 parts of a bio - based acrylic ester soft monomer, 0 - 25 parts of a bio - based acrylic ester hard monomer, 2 - 4 parts of an initiator, 0.5 - 1.5 parts of a bio - based chain transfer agent, and 100 - 200 parts of water or a bio - based organic solvent.

[0038] The functional monomer containing an amphiphilic molecular segment refers to a macromolecular compound containing a hydrophilic segment and a lipophilic segment in the same molecular chain, which can reduce the surface tension of water and achieve the function of a polymer surfactant. The bio - based acrylic monomer containing a cross - linking group can include ethylene glycol dimethacrylate (EDGMA), allyl methacrylate, diacetone acrylamide (DAAM) and adipic dihydrazide (ADH) or acetoacetoxyethyl methacrylate (AAEM), etc., which can endow the polymer with certain cross - linking reactivity. The bio - based acrylic ester soft monomer has good weather resistance, adhesion and chemical resistance, and can improve the durability of the polymer. The initiator is used to initiate the radical polymerization and copolymerization reactions of olefin and diene monomers, and can also be used for the cross - linking curing of unsaturated polyesters and polymer cross - linking reactions. The bio - based chain transfer agent is a substance that can effectively cause the chain - growing radicals to undergo radical transfer, and is used to adjust the relative molecular mass of the polymer.

[0039] For example, the hydrophilic polymer may include the following raw materials weighed by weight: 10 parts of a functional monomer containing an amphiphilic molecular segment, 5 parts of a bio - based acrylic monomer containing a cross - linking group, 50 parts of a bio - based acrylic ester soft monomer, 25 parts of a bio - based acrylic ester hard monomer, 4 parts of an initiator, 1.5 parts of a bio - based chain transfer agent, and 200 parts of water or a bio - based organic solvent.

[0040] Alternatively, the hydrophilic polymer may include the following raw materials by weight: 15 parts of a functional monomer containing an amphiphilic molecular segment, 5 parts of a bio-based acrylic monomer containing a crosslinking group, 30 parts of a bio-based acrylic ester soft monomer, 2 parts of a bio-based acrylic ester hard monomer, 2 parts of an initiator, 0.5 part of a bio-based chain transfer agent, and 100 parts of water or a bio-based organic solvent.

[0041] Or, the hydrophilic polymer may include the following raw materials by weight: 17 parts of a functional monomer containing an amphiphilic molecular segment, 20 parts of a bio-based acrylic monomer containing a crosslinking group, 30 parts of a bio-based acrylic ester soft monomer, 25 parts of a bio-based acrylic ester hard monomer, 2 parts of an initiator, 0.5 part of a bio-based chain transfer agent, and 130 parts of water or a bio-based organic solvent. The weight parts of each component can be selected within a range according to the requirements for the characteristics provided by different components to prepare the hydrophilic polymer.

[0042] In a possible implementation manner, the functional monomer containing an amphiphilic molecular segment is prepared by an esterification reaction of itaconic acid with at least one of polyvinyl alcohol, polyethylene glycol, and carboxymethyl cellulose.

[0043] Itaconic acid contains an unsaturated double bond and has active chemical properties, and can undergo an esterification reaction with at least one of polyvinyl alcohol, polyethylene glycol, and carboxymethyl cellulose. When polyvinyl alcohol is added during the preparation process of the functional monomer containing an amphiphilic molecular segment, the relative molecular mass of the copolymer can be reduced and the molecular weight distribution can be broadened, thereby improving the structure of the functional monomer containing an amphiphilic molecular segment. When polyethylene glycol is added during the preparation process of the functional monomer containing an amphiphilic molecular segment, a macromonomer can be prepared. When carboxymethyl cellulose is added during the preparation process of the functional monomer containing an amphiphilic molecular segment, the strength of the functional monomer containing an amphiphilic molecular segment can be improved.

[0044] The bio-based acrylic monomer containing a crosslinking group includes at least one of chitosan-modified acrylic acid and citric acid-modified acrylic acid.

[0045] When the bio-based acrylic monomer containing a crosslinking group includes chitosan-modified acrylic acid, the water solubility can be improved. When the bio-based acrylic monomer containing a crosslinking group includes citric acid-modified acrylic acid, it can have good weather resistance.

[0046] The bio-based acrylic ester soft monomer includes at least one of butyl acrylate, isooctyl acrylate, ethyl acrylate, n-octyl acrylate, and dodecyl acrylate.

[0047] When the bio-based acrylate soft monomer includes butyl acrylate, it can provide stable performance and still maintain good adhesion effects under some extreme conditions. When the bio-based acrylate soft monomer includes isooctyl acrylate, it can improve weather resistance, water resistance and chemical resistance. When the bio-based acrylate soft monomer includes ethyl acrylate, it is prone to polymerization reaction under high temperature or light conditions. When the bio-based acrylate soft monomer includes n-octyl acrylate, it has high light resistance, weather resistance and durability. When the bio-based acrylate soft monomer includes dodecyl acrylate, it has high elasticity and water resistance.

[0048] The acrylate hard monomer includes at least one of methyl methacrylate, ethyl methacrylate, tert-butyl methacrylate, isobornyl methacrylate and isobornyl acrylate.

[0049] When the acrylate hard monomer includes methyl methacrylate, it has higher chemical stability and can resist ultraviolet radiation and oxidation. When the acrylate hard monomer includes ethyl methacrylate, it has higher water resistance, flexibility and durability. When the acrylate hard monomer includes tert-butyl methacrylate, it has higher chemical resistance. When the acrylate hard monomer includes isobornyl methacrylate, it has higher adhesion. When the acrylate hard monomer includes isobornyl acrylate, it can reduce viscosity, improve leveling property, adhesion and impact resistance.

[0050] The initiator includes at least one of azobisisobutyronitrile, azobisisoheptonitrile and azoisobutyronitrile formamide.

[0051] The bio-based chain transfer agent includes at least one of mercaptoacetic acid and chitosan mercapto derivatives.

[0052] When the bio-based chain transfer agent includes mercaptoacetic acid, by transferring its thiol group, the rate and molecular weight distribution of the polymerization reaction are adjusted, so as to obtain a polymer with a narrower molecular weight distribution and more stable performance. When the bio-based chain transfer agent includes chitosan mercapto derivatives, the chitosan mercapto derivatives have high activity and are easy to undergo chain transfer reaction with free radicals, thus terminating the active chain, adjusting the polymer molecular weight and not affecting the polymerization reaction rate.

[0053] In a possible implementation, the thermoplastic polymer includes at least one of thermoplastic polyurethane and polyurethane. The curing agent includes at least one of glutaraldehyde, azelaic acid, amino resin curing agent, chitosan curing agent and bio-based curing agent. The reinforcing filler includes silica nanoparticles.

[0054] When the thermoplastic polymer includes thermoplastic polyurethane, it has high strength and toughness. When the thermoplastic polymer includes polyurethane, it has excellent wear resistance and is lighter in weight. When the curing agent includes glutaraldehyde, it has high stability and rapid reaction. When the curing agent includes azelaic acid, it can significantly improve the mechanical properties of the material. When the curing agent includes an amino resin curing agent, it has good adhesion and durability. When the curing agent includes a chitosan curing agent, it has good biocompatibility and is more environmentally friendly. When the curing agent includes a bio-based curing agent, it has good biocompatibility and is more environmentally friendly. When the reinforcing filler includes silica nanoparticles, it can improve the toughness of the material.

[0055] An embodiment of the present application provides a method for preparing a hydrophilic polymer, comprising the following steps:

[0056] 1) Mix an initiator, a functional monomer containing an amphiphilic molecular segment, a bio-based acrylic monomer containing a crosslinking group, a bio-based acrylic soft monomer, a bio-based acrylic hard monomer, and a bio-based chain transfer agent evenly to obtain a mixed solution;

[0057] 2) Heat water or a bio-based organic solvent to 75 - 80 °C, and dropwise add the mixed solution obtained in step 1), and finish the dropwise addition within 3 - 4 hours.

[0058] 3) Keep the mixed solution obtained in step 2) under heat preservation for reaction for 1 - 3 hours, and end the reaction when the monomer conversion rate of the functional monomer containing an amphiphilic molecular segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic soft monomer, and the bio-based acrylic hard monomer is greater than or equal to 90%.

[0059] 4) Cool the mixed solution obtained in step 3) to 40 - 50 °C to obtain a reaction product.

[0060] 5) Place the reaction product obtained in step 4) in a vacuum oven for drying to obtain the hydrophilic polymer, and thus the preparation is completed.

[0061] Specifically, during the preparation of the hydrophilic polymer:

[0062] The duration of dropwise adding the mixed solution is 3 - 4 hours, and the duration of heat preservation reaction is 1 - 3 hours.

[0063] Specifically, during the preparation of the hydrophilic polymer:

[0064] The duration of drying the reaction product in the vacuum oven is greater than or equal to 24 hours.

[0065] For example, the preparation process of the hydrophilic polymer can be as follows: Weigh the following raw materials by weight parts: 10 parts of a functional monomer containing an amphiphilic molecular chain segment, 5 parts of a bio-based acrylic monomer containing a crosslinking group, 50 parts of a bio-based acrylic ester soft monomer, 25 parts of a bio-based acrylic ester hard monomer, 4 parts of an initiator, 1.5 parts of a bio-based chain transfer agent, and 200 parts of water or a bio-based organic solvent.

[0066] 1) Mix the initiator, the functional monomer containing an amphiphilic molecular chain segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic ester soft monomer, the bio-based acrylic ester hard monomer, and the bio-based chain transfer agent evenly to obtain a mixed solution.

[0067] 2) Heat the water or the bio-based organic solvent to 77°C, and dropwise add the mixed solution obtained in step 1), and finish the dropwise addition within 3.5 hours.

[0068] 3) Carry out a heat preservation reaction on the mixed solution obtained in step 2) for 2 hours, and end the reaction when the monomer conversion rate of the functional monomer containing an amphiphilic molecular chain segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic ester soft monomer, and the bio-based acrylic ester hard monomer reaches 90%.

[0069] 4) Cool the mixed solution obtained in step 3) to 50°C to obtain a reaction product.

[0070] 5) Place the reaction product obtained in step 4) in a vacuum oven for drying to obtain the hydrophilic polymer, and thus the preparation is completed.

[0071] Again, for example, the preparation process of the hydrophilic polymer can also be as follows: Weigh the following raw materials by weight parts: 15 parts of a functional monomer containing an amphiphilic molecular chain segment, 5 parts of a bio-based acrylic monomer containing a crosslinking group, 30 parts of a bio-based acrylic ester soft monomer, 2 parts of a bio-based acrylic ester hard monomer, 2 parts of an initiator, 0.5 parts of a bio-based chain transfer agent, and 100 parts of water or a bio-based organic solvent.

[0072] 1) Mix the initiator, the functional monomer containing an amphiphilic molecular chain segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic ester soft monomer, the bio-based acrylic ester hard monomer, and the bio-based chain transfer agent evenly to obtain a mixed solution.

[0073] 2) Heat the water or the bio-based organic solvent to 77°C, and dropwise add the mixed solution obtained in step 1), and finish the dropwise addition within 3 hours.

[0074] 3) Carry out a heat preservation reaction on the mixed solution obtained in step 2) for 1 hour, and end the reaction when the monomer conversion rate of the functional monomer containing an amphiphilic molecular chain segment, the bio-based acrylic monomer containing a crosslinking group, the bio-based acrylic ester soft monomer, and the bio-based acrylic ester hard monomer reaches 92%.

[0075] 4) Cool down the mixed solution obtained in step 3) to 40 °C to obtain the reactants.

[0076] 5) Place the reactants obtained in step 4) in a vacuum oven for drying to obtain the hydrophilic polymer, and thus the preparation is completed.

[0077] Figure 1 The figure is a schematic diagram of the moisture-permeable and breathable fabric according to an embodiment of the present application in a dry state. Figure 2 The figure is a schematic diagram of the moisture-permeable and breathable fabric according to an embodiment of the present application in a wet state. Figure 3 The figure is a schematic diagram of the partial separation structure according to an embodiment of the present application in a wet state. As Figure 1-3 shown, the moisture-permeable and breathable fabric 1 includes a base layer 10.

[0078] A plurality of partial separation structures 11 are formed on the base layer 10. A swelling layer 12 is arranged on the partial separation structures 11 on the inner side surface of the base layer 10. The swelling layer 12 is prepared from the swelling material in the foregoing embodiment. When the swelling layer 12 swells upon being wetted, the swelling layer 12 and the partial separation structure 11 in contact with the swelling layer 12 deform towards the outer side surface of the base layer 10, forming a breathable through-hole 13.

[0079] The moisture-permeable and breathable fabric 1 is a flat fabric in a dry state. After the moisture-permeable and breathable fabric 1 comes into contact with water, the swelling layer 12 swells upon being wetted, and then drives the partial separation structure 11 in contact with the swelling layer 12 to deform towards the outer side surface of the base layer 10. The deformation mode may be warping, bending, curling, etc. The swelling schematic diagram of the swelling layer 12 may be as Figure 4 shown.

[0080] As Figure 5 shown, after the moisture-permeable and breathable fabric 1 is worn by a user, after the user's skin 2 sweats, the sweat penetrates through the base layer 10 to the swelling layer 12. After the swelling layer 12 swells upon being wetted, it opens towards the direction away from the skin, driving the partial separation structure 11 to open towards the direction away from the skin. At this time, the convection effect between the heat generated by the user and the air is enhanced to accelerate heat dissipation.

[0081] In the embodiment of the present application, the swelling layer 12 of the partial separation structure 11 arranged on the base layer 10 in the moisture-permeable and breathable fabric 1 swells upon being wetted, causing the corresponding partial separation structure 11 to deform, and then forming a breathable through-hole 13, thereby enhancing the dynamic air permeability of the fabric.

[0082] In a possible implementation manner, the distance between adjacent partial separation structures among the plurality of partial separation structures 11 is greater than or equal to 2 millimeters.

[0083] By setting the distance between adjacent local separation structures 11 in the plurality of local separation structures 11 to be greater than or equal to 2 mm, it is possible to avoid the problem that the strength of the moisture-permeable fabric 1 decreases due to the too-close distance between the local separation structures 11.

[0084] In a possible implementation manner, the size of the minimum circumscribed rectangle of the projection of each local separation structure 11 in the plurality of local separation structures 11 on the moisture-permeable fabric 1 is 3 mm * 5 mm. By setting the size of the local separation structures 11, it is possible to ensure that while the ventilation channels formed by the local separation structures 11 can ventilate in the wet state, the skin is not overly exposed.

[0085] In a possible implementation manner, the projection of the local separation structure 11 on the moisture-permeable fabric 1 includes at least one of strip-shaped, grid-shaped, scale-shaped, and dot-matrix-shaped.

[0086] By setting different shapes of the local separation structures 11, different-shaped ventilation through-holes 13 can be formed after the wet expansion layer 12 expands when wet, so as to meet various different heat dissipation requirements.

[0087] An embodiment of the present application provides a method for preparing a moisture-permeable fabric, including the following steps:

[0088] 11) Open local separation structures on the moisture-permeable fabric through a punching process.

[0089] 12) Fix the wet expansion material in the foregoing embodiment on the local separation structures on the inner side of the base layer to form a wet expansion layer.

[0090] In a possible implementation manner, the process of fixing the wet expansion material in the foregoing embodiment on the local separation structures on the inner side of the base layer to form a wet expansion layer may further include:

[0091] Lay the wet expansion material on the local separation structures on the inner side of the base layer by means of hot pressing, printing, or spraying, wherein the hot pressing temperature is 120°C to 160°C, the hot pressing pressure is 1.5 MPa, and the hot pressing duration is 30 seconds.

[0092] Laying the wet expansion material on the local separation structures on the inner side of the base layer by means of hot pressing, printing, or spraying has a relatively high structural strength.

[0093] Figures 6-9 The schematic diagrams of clothes in multiple embodiments of the present application are shown, as Figures 6-9 shown, the clothes 3 are prepared from the moisture-permeable fabric 1 in the foregoing embodiment, and at least one area on the clothes 3 is provided with local separation structures 11. Figure 6 Schematic diagrams of the front and back of a T-shirt prepared from the moisture-permeable fabric 1, Figure 7Schematic diagrams of the front and back sides of a vest made of the moisture-permeable fabric 1 Figure 8 Schematic diagrams of the front and back sides of a skin-friendly clothing made of the moisture-permeable fabric 1 Figure 9 Schematic diagrams of the front and back sides of a windbreaker made of the moisture-permeable fabric 1

[0094] For the specific implementation of the moisture-permeable fabric 1 in the clothing 3, reference may be made to the corresponding descriptions in the foregoing embodiments of the moisture-permeable fabric, which will not be elaborated herein. And the clothing 3 has the technical effects of the moisture-permeable fabric 1 in the foregoing embodiments of the moisture-permeable fabric

[0095] It should be understood that the various embodiments in this specification are described in a progressive manner. For the parts that are the same or similar among the various embodiments, reference may be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the method embodiments, since they are basically similar to the methods described in the device and system embodiments, the descriptions are relatively simple, and reference may be made to the partial descriptions of other embodiments for the relevant parts

[0096] It should be understood that the specific embodiments of this specification have been described. Other embodiments are within the scope of the claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired results

[0097] It should be understood that the use of the singular form to describe an element that shows only one does not mean limiting the number of the element to one. In addition, the modules or elements described or shown as separate herein may be combined into a single module or element, and the module or element described or shown as a single herein may be split into multiple modules or elements

[0098] It should also be understood that the terms and expressions used herein are only for description. One or more embodiments of this specification should not be limited to these terms and expressions. The use of these terms and expressions does not mean excluding any equivalent features of the illustration and description (or parts thereof). It should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations and substitutions may also exist. Accordingly, the claims should be regarded as covering all such equivalents

Claims

1. A swelling material, characterized in that: The invention comprises the following components in parts by weight: 20 to 40 parts of a hydrophilic polymer, 20 to 40 parts of a thermoplastic polymer, 10 to 20 parts of a curing agent and 5 to 20 parts of a reinforcing filler.

2. The swelling material according to claim 1, characterized in that: The hydrophilic polymer comprises the following components in parts by weight: 10 to 30 parts of functional monomers containing amphiphilic molecular segments, 5 to 20 parts of bio-based acrylic acid monomers containing cross-linking groups, 30 to 50 parts of bio-based acrylic acid ester soft monomers, 0 to 25 parts of bio-based acrylic acid ester hard monomers, 2 to 4 parts of initiators, 0.5 to 1.5 parts of bio-based chain transfer agents, and 100 to 200 parts of water or bio-based organic solvents.

3. The swelling material according to claim 2, characterized in that: The functional monomer containing the amphiphilic molecular chain segment is prepared by esterification reaction of itaconic acid with at least one of polyvinyl alcohol, polyethylene glycol and carboxymethyl cellulose; The bio-based acrylic acid monomer containing a cross-linking group comprises: at least one of chitosan-modified acrylic acid and citric acid-modified acrylic acid; The bio-based acrylic acid ester soft monomer comprises at least one of butyl acrylate, isooctyl acrylate, ethyl acrylate, n-octyl acrylate and dodecyl acrylate; The acrylic acid ester hard monomer comprises at least one of methyl methacrylate, ethyl methacrylate, tert-butyl methacrylate, isobornyl methacrylate and isobornyl acrylate; The initiator comprises: at least one of azobisisobutyronitrile, azobisisoheptanenitrile and azoisobutylcyanoformamide; The bio-based chain transfer agent includes at least one of thioglycolic acid and chitosan thiol derivatives.

4. The swelling material according to claim 1, characterized in that The thermoplastic polymer includes: at least one of thermoplastic polyurethane and polyurethane; The curing agent comprises: at least one of glutaraldehyde, azelaic acid, amino resin curing agent, chitosan curing agent and bio-based curing agent; The reinforcing filler includes: silicon dioxide nanoparticles.

5. The swelling material according to claim 2, characterized in that: The hydrophilic polymer is prepared by the following method: The initiator, the functional monomer containing the amphiphilic molecular segment, the bio-based acrylic acid monomer containing a cross-linking group, the bio-based acrylic acid ester soft monomer, the bio-based acrylic acid ester hard monomer and the bio-based chain transfer agent are uniformly mixed to obtain a mixed solution; The water or the bio-based organic solvent is heated to 75-80° C., the mixed solution is added dropwise, and the reaction is carried out at a temperature-keeping ratio. The reaction is terminated when the monomer conversion rates of the functional monomer containing the amphiphilic molecular segment, the bio-based acrylic acid monomer containing the cross-linking group, the bio-based acrylic acid ester soft monomer, and the bio-based acrylic acid ester hard monomer are greater than or equal to 90%, and the temperature is lowered to 40-50° C. to obtain a reactant; The reactant is placed in a vacuum oven and dried to obtain the hydrophilic polymer.

6. The swelling material according to claim 5, characterized in that: In the process of preparing the hydrophilic polymer: The duration of adding the mixed solution dropwise is 3 to 4 hours; The insulation reaction lasts for 1 to 3 hours.

7. The swelling material according to claim 5, characterized in that In the process of preparing the hydrophilic polymer: The reactant is placed in a vacuum oven for drying for greater than or equal to 24 hours.

8. A breathable fabric when wet, characterized in that: include: Basal layer; The base layer is provided with a plurality of local separation structures, and a swelling layer is provided on the local separation structures on the inner side of the base layer, wherein the swelling layer is prepared by the swelling material as claimed in any one of claims 1 to 7; When the swelling layer expands when wet, the swelling layer and the local separation structure attached to the swelling layer deform toward the outer side of the base layer to form air-permeable through holes.

9. The moisture-permeable fabric according to claim 8, characterized in that: The spacing between adjacent local separation structures in the plurality of local separation structures is greater than or equal to 2 mm.

10. The moisture-permeable fabric according to claim 8, characterized in that: The size of the minimum circumscribed rectangle of the projection of each of the multiple local separation structures on the wet breathable fabric is 3 mm*5 mm.

11. The moisture-permeable fabric according to claim 8, characterized in that: The projection of the local separation structure on the moisture-permeable fabric includes at least one of a strip shape, a grid shape, a scale shape and a dot matrix shape.

12. The moisture-permeable fabric according to any one of claims 8 to 11, characterized in that: The wet breathable fabric is prepared by the following method: A local separation structure is provided on the moisture-permeable and breathable fabric by a punching process; The swelling material according to any one of claims 1 to 7 is fixed to the partial separation structure on the inner side of the base layer to form the swelling layer.

13. The moisture-permeable fabric according to claim 12, characterized in that: The method of fixing the swelling material as claimed in any one of claims 1 to 7 to the local separation structure on the inner side of the base layer to form a swelling layer comprises: The swelling material is laid on the local separation structure on the inner side of the base layer by hot pressing, printing or spraying, wherein the hot pressing temperature is 120° C. to 160° C., the hot pressing pressure is 1.5 MPa, and the hot pressing time is 30 seconds.

14. A garment, said garment being made of the breathable fabric when wet according to any one of claims 8 to 13, and at least one area on said garment being provided with a local separation structure.

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