Preparation method of wear-resistant and breathable school uniform fabric

Abstract

The application relates to the technical field of textile fabrics, and discloses a preparation method of wear-resistant and breathable school uniform fabric, the wear-resistant and breathable school uniform fabric is composed of a wear-resistant layer and an inner lining layer, the wear-resistant layer is composed of the following fibers in parts by weight: nylon fibers 60-100 parts, polyester fibers 10-15 parts and spandex fibers 10-20 parts, the surface of the wear-resistant layer is coated with a nano coating, the nano coating is composed of the following raw materials in parts by weight: silicon dioxide 5-10 parts, anhydrous ethanol 20-40 parts, a silane coupling agent 0.5-4 parts and N,N-dimethylformamide 0.3-0.8 parts, the inner lining layer is composed of wool fibers and cotton fibers, and the surface of the inner lining layer is coated with a thermoplastic polyurethane film. The wear-resistant layer is coated with the nano coating, the wear resistance of the fabric can be further improved, the inner lining layer is coated with the thermoplastic polyurethane film, the inner lining layer fabric can be attached to the human skin without causing harm, and the inner lining layer fabric has the advantages of strong air permeability.

Description

Technical Field

[0001] This invention relates to the field of textile fabric technology, specifically to a method for preparing a wear-resistant and breathable school uniform fabric. Background Technology

[0002] School uniforms are standardized student attire prescribed by schools. As clothing worn daily by primary and secondary school students, their safety and environmental friendliness are particularly important. Currently, the production quality of school uniforms varies greatly, and some may even harm students' health. This necessitates the development of a green and environmentally friendly school uniform manufacturing process to ensure the quality of the fabrics.

[0003] Students, especially primary and secondary school students, are in a growth stage and are characterized by high activity levels, easy sweating, and poor resistance to external toxic and harmful substances. Their healthy growth has always been a focus of attention for the whole society. As a result, the quality of school uniforms, which is closely related to this, has received increasing attention from all sectors of society. Therefore, higher requirements have been placed on the production quality of school uniform fabrics. However, the school uniform fabrics currently in use still have the following problems: 1. Poor elasticity and softness, resulting in a stiff and uncomfortable feel when worn; 2. Not wear-resistant, easily scratched or even damaged when students are outdoors; 3. Low mechanical strength, easily damaged, and short service life; 4. It is even more difficult to achieve a combination of good elasticity, good wear resistance, and mechanical strength.

[0004] Therefore, in response to the above problems, we propose a method for preparing a wear-resistant and breathable school uniform fabric. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, the wear-resistant and breathable school uniform fabric prepared in this invention comprises a wear-resistant layer and an inner lining layer. The wear-resistant layer is made of a blend of nylon, spandex, and polyester fibers, which are known for their superior wear resistance and durability. A nano-coating with excellent wear resistance is applied to the wear-resistant layer to further enhance its wear resistance. The inner lining layer is made of a blend of cotton fibers, which are moisture-wicking, breathable, and comfortable to wear, and wool fibers, which are strong, wear-resistant, lightweight, warm, elastic, wrinkle-resistant, and highly absorbent. A thermoplastic polyurethane film is applied to the inner lining layer, achieving a comfortable fit against the skin while maintaining excellent breathability. This invention solves the following problems with currently used school uniform fabrics: 1. Poor elasticity and softness, resulting in a stiff and uncomfortable feel; 2. Low wear resistance, easily scratched or damaged when students are outdoors; 3. Low mechanical strength, easily damaged, and short service life; 4. Difficulty in achieving a balance between good elasticity, good wear resistance, and good overall mechanical strength.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a method for preparing a wear-resistant and breathable school uniform fabric, wherein the wear-resistant and breathable school uniform fabric comprises a wear-resistant layer and an inner lining layer. The wear-resistant layer is composed of the following fiber blends in parts by weight: 60-100 parts nylon fiber, 10-15 parts polyester fiber, and 10-20 parts spandex fiber. The surface of the wear-resistant layer is coated with a nano-coating, which is composed of the following raw materials in parts by weight: 5-10 parts silica, 20-40 parts anhydrous ethanol, 0.5-4 parts silane coupling agent, and 0.3-0.8 parts N,N-dimethylformamide. The inner lining layer is made of a blend of wool fiber and cotton fiber, and the surface of the inner lining layer is coated with a thermoplastic polyurethane film. The method for preparing the wear-resistant and breathable school uniform fabric includes the following specific steps: S1: Fabric weaving; S2: Nylon fiber, polyester fiber and spandex fiber are blended and woven according to the stated weight parts to obtain a wear-resistant layer; S3: Wool fibers and cotton fibers are blended and woven according to the stated weight proportions to obtain an inner lining layer; S4: Mix the specified weight proportions of silica, anhydrous ethanol, silane coupling agent and N,N-dimethylformamide to obtain a mixture, and coat the mixture onto the wear-resistant layer prepared in S2; S5: Apply the thermoplastic polyurethane film onto the inner liner layer prepared in S3 using a dry transfer coating method. S6: The abrasion-resistant layer and inner lining layer of the nano-coating and thermoplastic polyurethane film coated by S4 and S5 are connected by sewing to obtain the base fabric layer of the school uniform fabric. S7: Place the fabric base layer prepared in S6 into the dyeing machine, add the dispersant, raise the temperature to 80-100℃, boil the fabric for 30-60 minutes, let it stand to room temperature, add the dyeing solution, raise the temperature to 30-45℃, keep it warm for 15-30 minutes, and then wash the dyed school uniform fabric base layer.

[0007] Preferably, the nano-coating comprises the following components by weight: 5 parts silica, 20 parts anhydrous ethanol, 0.5 parts silane coupling agent, and 0.3 parts N,N-dimethylformamide.

[0008] Preferably, the method for preparing the nano-coating includes the following specific steps: Step 1: Dry the ultrafine silica at high temperature until the water molecules adhering to the surface of the silica have completely evaporated; Step 2: Using a portion of anhydrous ethanol as a solvent, the dried silica from Step 1 is added to anhydrous ethanol and then ultrasonically dispersed to obtain a silica mixture. Step 3: Add silane coupling agent to the silica mixture prepared in Step 2, and stir under nitrogen protection until the reaction is complete; Step 4: Mix the remaining anhydrous ethanol with N,N-dimethylformamide and add it to the silica mixture prepared in Step 3. After thorough stirring, pour the mixture into a reservoir equipped with electrostatic spraying. After spraying, a silica nano-coating is obtained.

[0009] Preferably, the dry transfer coating method for thermoplastic polyurethane films specifically includes the following steps: Step 1: Coat the thermoplastic polyurethane film onto the release paper, then attach the inner liner to the release paper, and finally peel the inner liner and coating together off the release paper to obtain the laminated inner liner.

[0010] Preferably, the thickness of the nano-coating is 0.2mm-1mm, and the thickness of the thermoplastic polyurethane film is 0.015mm-0.5mm.

[0011] Preferably, in step S7, the heating rate is 1.2°C / min to 2.0°C / min.

[0012] Preferably, the rated current in the liquid storage chamber is 20-40mA.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a method for preparing wear-resistant and breathable school uniform fabric, which has the following beneficial effects: 1. The wear-resistant and breathable school uniform fabric prepared by the present invention includes a wear-resistant layer and an inner lining layer. The wear-resistant layer is made of nylon fiber, spandex fiber and polyester fiber as the main raw materials with excellent wear resistance and durability. A nano coating with excellent wear resistance is coated on the wear-resistant layer, which can further improve the wear resistance of the fabric.

[0014] 2. The wear-resistant and breathable school uniform fabric prepared by this invention includes a wear-resistant layer and an inner lining layer. The inner lining layer is made of cotton: cotton fibers, which have good moisture absorption, breathability, and wearing comfort, are blended with wool fibers, which have good strength, wear resistance, light weight, warmth retention, elasticity, wrinkle resistance, and strong moisture absorption. A thermoplastic polyurethane film is coated on the inner lining layer, which can achieve the inner lining fabric to fit the human skin without harming the body while having strong breathability. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1: A method for preparing a wear-resistant and breathable school uniform fabric The wear-resistant and breathable school uniform fabric consists of a wear-resistant layer and an inner lining layer. The wear-resistant layer is made of the following fiber blend in parts by weight: 60 parts nylon fiber, 10 parts polyester fiber, and 10 parts spandex fiber. The surface of the wear-resistant layer is coated with a nano-coating with a thickness of 0.2 mm. The nano-coating is made of the following raw materials in parts by weight: 5 parts silica, 20 parts anhydrous ethanol, 0.5 parts silane coupling agent, and 0.3 parts N,N-dimethylformamide. The inner lining layer is made of a blend of wool and cotton fibers. The surface of the inner lining layer is coated with a thermoplastic polyurethane film with a thickness of 0.2 mm.

[0017] A method for preparing a wear-resistant and breathable school uniform fabric includes the following specific steps: S1: Fabric weaving; S2: Nylon fiber, polyester fiber and spandex fiber are blended and woven according to the stated weight parts to obtain a wear-resistant layer; S3: Wool fibers and cotton fibers are blended and woven according to the stated weight proportions to obtain an inner lining layer; S4: Dry 5 parts of ultrafine silica at high temperature until the water molecules adhering to the silica surface have completely evaporated; use 10 parts of anhydrous ethanol as a solvent, add the dried silica to the anhydrous ethanol and then ultrasonically disperse it to obtain a silica mixture; add 0.5 parts of silane coupling agent to the silica mixture and stir under nitrogen protection until fully reacted; add the remaining 10 parts of anhydrous ethanol and 0.3 parts of N,N-dimethylformamide to the silica mixture, stir thoroughly, and then put it into a storage chamber equipped with electrostatic spraying. The rated current in the storage chamber is 20mA. Spray the solution in the storage chamber onto the wear-resistant layer prepared in S2. S5: Coat the thermoplastic polyurethane film onto the release paper, then attach the inner liner prepared in S3 onto the release paper, and finally peel the inner liner and the coating together off the release paper to obtain the coated inner liner. S6: The abrasion-resistant layer and inner lining layer of the nano-coating and thermoplastic polyurethane film coated by S4 and S5 are connected by sewing to obtain the base fabric layer of the school uniform fabric. S7: Place the fabric base layer prepared in S6 into the dyeing machine, add the dispersant, raise the temperature to 80-100℃, boil the fabric for 30-60 minutes, let it stand to room temperature, add the dyeing solution, raise the temperature to 30-45℃ at a rate of 1.2℃ / min, keep it warm for 15-30 minutes, and then wash the dyed school uniform fabric base layer.

[0018] Example 2: A method for preparing a wear-resistant and breathable school uniform fabric The wear-resistant and breathable school uniform fabric consists of an abrasion-resistant layer and an inner lining layer. The abrasion-resistant layer is made of the following fiber blend by weight: 75 parts nylon fiber, 12 parts polyester fiber, and 14 parts spandex fiber. The surface of the abrasion-resistant layer is coated with a nano-coating, the thickness of which is 0.5 mm. The nano-coating is made of the following raw materials by weight: 5 parts silica, 20 parts anhydrous ethanol, 0.5 parts silane coupling agent, and 0.3 parts N,N-dimethylformamide. The inner lining layer is made of a blend of wool and cotton fibers, and the surface of the inner lining layer is coated with a thermoplastic polyurethane film, the thickness of which is 0.15 mm.

[0019] A method for preparing a wear-resistant and breathable school uniform fabric includes the following specific steps: S1: Fabric weaving; S2: Nylon fiber, polyester fiber and spandex fiber are blended and woven according to the stated weight parts to obtain a wear-resistant layer; S3: Wool fibers and cotton fibers are blended and woven according to the stated weight proportions to obtain an inner lining layer; S4: Dry 5 parts of ultrafine silica at high temperature until the water molecules adhering to the silica surface have completely evaporated; use 10 parts of anhydrous ethanol as a solvent, add the dried silica to the anhydrous ethanol and then ultrasonically disperse it to obtain a silica mixture; add 0.5 parts of silane coupling agent to the silica mixture and stir under nitrogen protection until fully reacted; add the remaining 10 parts of anhydrous ethanol and 0.3 parts of N,N-dimethylformamide to the silica mixture, stir thoroughly, and then put it into a storage chamber equipped with electrostatic spraying. The rated current in the storage chamber is 25mA. Spray the solution in the storage chamber onto the wear-resistant layer prepared in S2. S5: Coat the thermoplastic polyurethane film onto the release paper, then attach the inner liner prepared in S3 onto the release paper, and finally peel the inner liner and the coating together off the release paper to obtain the coated inner liner. S6: The abrasion-resistant layer and inner lining layer of the nano-coating and thermoplastic polyurethane film coated by S4 and S5 are connected by sewing to obtain the base fabric layer of the school uniform fabric. S7: Place the fabric base layer prepared in S6 into the dyeing machine, add the dispersant, raise the temperature to 80-100℃, boil the fabric for 30-60 minutes, let it stand to room temperature, add the dyeing solution, raise the temperature to 30-45℃ at a rate of 1.4°C / min, keep it warm for 15-30 minutes, and then wash the dyed school uniform fabric base layer.

[0020] Example 3: A method for preparing a wear-resistant and breathable school uniform fabric The wear-resistant and breathable school uniform fabric consists of an abrasion-resistant layer and an inner lining layer. The abrasion-resistant layer is made of the following fiber blend by weight: 85 parts nylon fiber, 13 parts polyester fiber, and 18 parts spandex fiber. The surface of the abrasion-resistant layer is coated with a nano-coating, the thickness of which is 0.5 mm. The nano-coating is made of the following raw materials by weight: 10 parts silica, 40 parts anhydrous ethanol, 4 parts silane coupling agent, and 0.8 parts N,N-dimethylformamide. The inner lining layer is made of a blend of wool and cotton fibers, and the surface of the inner lining layer is coated with a thermoplastic polyurethane film, the thickness of which is 0.015 mm.

[0021] A method for preparing a wear-resistant and breathable school uniform fabric includes the following specific steps: S1: Fabric weaving; S2: Nylon fiber, polyester fiber and spandex fiber are blended and woven according to the stated weight parts to obtain a wear-resistant layer; S3: Wool fibers and cotton fibers are blended and woven according to the stated weight proportions to obtain an inner lining layer; S4: Dry 10 parts of ultrafine silica at high temperature until the water molecules adhering to the silica surface have completely evaporated; use 20 parts of anhydrous ethanol as a solvent, add the dried silica to the anhydrous ethanol and then ultrasonically disperse it to obtain a silica mixture; add 4 parts of silane coupling agent to the silica mixture and stir under nitrogen protection until fully reacted; add the remaining 20 parts of anhydrous ethanol and 0.8 parts of N,N-dimethylformamide mixture to the silica mixture, stir thoroughly, and then put it into a storage chamber equipped with electrostatic spraying. The rated current in the storage chamber is 30mA. Spray the solution in the storage chamber onto the wear-resistant layer prepared in S2. S5: Coat the thermoplastic polyurethane film onto the release paper, then attach the inner liner prepared in S3 onto the release paper, and finally peel the inner liner and the coating together off the release paper to obtain the coated inner liner. S6: The abrasion-resistant layer and inner lining layer of the nano-coating and thermoplastic polyurethane film coated by S4 and S5 are connected by sewing to obtain the base fabric layer of the school uniform fabric. S7: Place the fabric base layer prepared in S6 into the dyeing machine, add the dispersant, raise the temperature to 80-100℃, boil the fabric for 30-60 minutes, let it stand to room temperature, add the dyeing solution, raise the temperature to 30-45℃ at a rate of 1.8°C / min, keep it warm for 15-30 minutes, and then wash the dyed school uniform fabric base layer.

[0022] Example 4: A method for preparing a wear-resistant and breathable school uniform fabric The wear-resistant and breathable school uniform fabric consists of an abrasion-resistant layer and an inner lining layer. The abrasion-resistant layer is made of the following fiber blend by weight: 100 parts nylon fiber, 15 parts polyester fiber, and 20 parts spandex fiber. The surface of the abrasion-resistant layer is coated with a nano-coating, the thickness of which is 1 mm. The nano-coating is made of the following raw materials by weight: 7 parts silica, 30 parts anhydrous ethanol, 2 parts silane coupling agent, and 0.5 parts N,N-dimethylformamide. The inner lining layer is made of a blend of wool and cotton fibers, and the surface of the inner lining layer is coated with a thermoplastic polyurethane film, the thickness of which is 0.5 mm.

[0023] A method for preparing a wear-resistant and breathable school uniform fabric includes the following specific steps: S1: Fabric weaving; S2: Nylon fiber, polyester fiber and spandex fiber are blended and woven according to the stated weight parts to obtain a wear-resistant layer; S3: Wool fibers and cotton fibers are blended and woven according to the stated weight proportions to obtain an inner lining layer; S4: Dry 7 parts of ultrafine silica at high temperature until the water molecules adhering to the silica surface evaporate completely; use 15 parts of anhydrous ethanol as a solvent, add the dried silica to the anhydrous ethanol and then ultrasonically disperse to obtain a silica mixture; add 2 parts of silane coupling agent to the silica mixture and stir under nitrogen protection until fully reacted; add the remaining 15 parts of anhydrous ethanol and 0.5 parts of N,N-dimethylformamide mixture to the silica mixture, stir thoroughly, and then fill the reservoir with electrostatic spraying. The rated current in the reservoir is 40mA. Spray the solution in the reservoir onto the wear-resistant layer prepared in S2. S5: Coat the thermoplastic polyurethane film onto the release paper, then attach the inner liner prepared in S3 onto the release paper, and finally peel the inner liner and the coating together off the release paper to obtain the coated inner liner. S6: The abrasion-resistant layer and inner lining layer of the nano-coating and thermoplastic polyurethane film coated by S4 and S5 are connected by sewing to obtain the base fabric layer of the school uniform fabric. S7: Place the fabric base layer prepared in S6 into the dyeing machine, add the dispersant, raise the temperature to 80-100℃, boil the fabric for 30-60 minutes, let it stand to room temperature, add the dyeing solution, raise the temperature to 30-45℃ at a rate of 2.0°C / min, keep it warm for 15-30 minutes, and then wash the dyed school uniform fabric base layer.

[0024] Experimental materials: the wear-resistant, sweat-wicking, and environmentally friendly school uniform fabrics produced in Examples 1 to 4 of this invention.

[0025] Experimental method: Compare the various properties of different materials under the same conditions.

[0026] Experimental results show that the wear-resistant, moisture-wicking, and environmentally friendly school uniform fabric prepared by this invention has good wear resistance, excellent moisture absorption and wicking properties, and the preparation process is simple.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a wear-resistant and breathable school uniform fabric, characterized in that: The wear-resistant and breathable school uniform fabric consists of a wear-resistant layer and an inner lining layer. The wear-resistant layer is composed of the following fiber blends in parts by weight: 60-100 parts nylon fiber, 10-15 parts polyester fiber, and 10-20 parts spandex fiber. The surface of the wear-resistant layer is coated with a nano-coating, which is composed of the following raw materials in parts by weight: 5-10 parts silica, 20-40 parts anhydrous ethanol, 0.5-4 parts silane coupling agent, and 0.3-0.8 parts N,N-dimethylformamide. The inner lining layer is made of a blend of wool and cotton fibers, and its surface is coated with a thermoplastic polyurethane film. The preparation method of the wear-resistant and breathable school uniform fabric includes the following specific steps: S1: Fabric weaving; S2: Nylon fiber, polyester fiber and spandex fiber are blended and woven according to the stated weight parts to obtain a wear-resistant layer; S3: Wool fibers and cotton fibers are blended and woven according to the stated weight proportions to obtain an inner lining layer; S4: Mix the specified weight parts of silica, anhydrous ethanol, silane coupling agent and N,N-dimethylformamide to obtain a nano-coating, and coat the nano-coating onto the wear-resistant layer prepared in S2. S5: Apply the thermoplastic polyurethane film onto the inner liner layer prepared in S3 using a dry transfer coating method. S6: The abrasion-resistant layer and inner lining layer of the nano-coating and thermoplastic polyurethane film coated by S4 and S5 are connected by sewing to obtain the base fabric layer of the school uniform fabric. S7: Place the fabric base layer prepared in S6 into the dyeing machine, add the dispersant, raise the temperature to 80-100℃, boil the fabric for 30-60 minutes, let it stand to room temperature, add the dyeing solution, raise the temperature to 30-45℃, keep it warm for 15-30 minutes, and then wash the dyed school uniform fabric base layer.

2. The method for preparing a wear-resistant and breathable school uniform fabric according to claim 1, characterized in that: The nano-coating comprises the following components by weight: 5 parts silica, 20 parts anhydrous ethanol, 0.5 parts silane coupling agent, and 0.3 parts N,N-dimethylformamide.

3. The method for preparing a wear-resistant and breathable school uniform fabric according to claim 1, characterized in that: The method for preparing the nano-coating includes the following specific steps: Step 1: Dry the ultrafine silica at high temperature until the water molecules adhering to the surface of the silica have completely evaporated; Step 2: Using a portion of anhydrous ethanol as a solvent, the dried silica from Step 1 is added to anhydrous ethanol and then ultrasonically dispersed to obtain a silica mixture. Step 3: Add silane coupling agent to the silica mixture prepared in Step 2, and stir under nitrogen protection until the reaction is complete; Step 4: Mix the remaining anhydrous ethanol with N,N-dimethylformamide and add it to the silica mixture prepared in Step 3. After thorough stirring, pour the mixture into a reservoir equipped with electrostatic spraying. After spraying, a silica nano-coating is obtained.

4. The method for preparing a wear-resistant and breathable school uniform fabric according to claim 1, characterized in that: The dry transfer coating method for thermoplastic polyurethane films specifically includes the following steps: Step 1: Coat the thermoplastic polyurethane film onto the release paper, then attach the inner liner to the release paper, and finally peel the inner liner and coating together off the release paper to obtain the laminated inner liner.

5. The method for preparing a wear-resistant and breathable school uniform fabric according to claim 1, characterized in that: In step S7, the heating rate is 1.2°C / min to 2.0°C / min.

6. The method for preparing a wear-resistant and breathable school uniform fabric according to claim 3, characterized in that: The rated current in the liquid storage chamber is 20-40mA.

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