Thermal school uniform fabric

Abstract

The application relates to the field of fabrics, and particularly discloses a thermal school uniform fabric, which comprises a surface layer and an inner layer; the surface layer is formed by mixing solid ceramic microbeads and mica powder modified nylon fibers with polyester fibers; and the inner layer is formed by mixing hollow microbead modified nylon fibers with viscose fibers. The fabric is low in price, good in thermal insulation effect, and capable of meeting the requirement of being used as a thermal school uniform fabric.

Description

Technical Field

[0001] This application relates to the field of fabrics, and more specifically, to a thermal school uniform fabric. Background Technology

[0002] School uniforms for autumn and winter are typically made of synthetic materials such as polyester, nylon, and polyester fiber. These materials are relatively inexpensive and possess high strength, elasticity, and wrinkle resistance, making them resistant to wrinkles and deformation and able to withstand frequent wearing, washing, and drying. However, these fabrics often lack sufficient warmth retention, especially in colder northern regions where higher demands are placed on the insulation properties of school uniform fabrics.

[0003] In response to the aforementioned problems, this application provides a thermal insulation school uniform fabric. Summary of the Invention

[0004] To address the issue of warmth in school uniform fabrics, this application provides a thermal insulation school uniform fabric.

[0005] A thermal school uniform fabric, characterized in that it comprises a surface layer and an inner layer: the surface layer is made of a blend of solid ceramic microspheres and mica powder modified nylon fibers and polyester fibers, and the inner layer is made of a blend of hollow microsphere modified nylon fibers and viscose fibers.

[0006] By adopting the above technical solutions, nylon fibers, with their high strength and toughness, are suitable for use as the outer layer of school uniform fabric, meeting the requirements of sports and high-frequency wear. Solid ceramic microspheres, a lightweight functional material, can insulate and reflect radiant and conductive heat, providing not only thermal insulation but also reflecting heat back to the inner layer of the garment. Mica powder also has excellent thermal insulation properties and a sheet-like structure, which can extend the heat conduction path and better retain heat in the inner layer of the fabric. By modifying nylon fibers with solid ceramic microspheres and mica powder, the surface layer of the fabric has a good heat retention effect, resulting in school uniform fabric with good insulation performance. Polyester is inexpensive, and the fabric made from it has good elastic recovery and high strength, making it durable and wrinkle-resistant. By blending modified nylon with polyester, the resulting surface layer is durable and wrinkle-resistant. Hollow microspheres are lightweight, have low thermal conductivity, high strength, and are chemically stable. With advantages such as good performance, the hollow microspheres contain air, which is a poor conductor of heat. By modifying the hollow microspheres with nylon fibers, the movement space of gas molecules is restricted, thereby preventing both convection and conduction of heat. When the pore size of the sealed pores is comparable to the mean free path of the gas molecules, the air molecules inside the pores lose their ability to flow freely and instead adhere to the pore walls. At this point, the material is in a near-vacuum state, and the convection and conduction of heat are essentially blocked, greatly reducing heat loss and further improving the insulation effect of the school uniform fabric. The basic component of viscose fiber is cellulose, which has excellent moisture absorption and is not prone to static electricity. The resulting fabric is comfortable to wear and suitable for use as the inner layer of school uniform fabric. By blending hollow microsphere-modified nylon fibers with viscose fibers as the inner layer of school uniform fabric, the heat emitted by the body is not easily conducted outward, resulting in good insulation.

[0007] In one specific feasible implementation, the surface layer yarn is 40 count and the inner layer yarn is 30 count.

[0008] By adopting the above technical solution, the fabric produced has moderate thickness, good strength, and low cost.

[0009] In one specific feasible implementation, the mass ratio of the surface layer nylon fiber to cotton fiber is (2-3):1; the mass ratio of the inner layer viscose fiber to nylon fiber is (2-3):1.

[0010] By adopting the above technical solution, the fabric produced is comfortable, durable, and inexpensive, which can meet the daily use of school uniform fabric. Moreover, the fibers are tightly bound together, resulting in a comfortable, durable fabric with good heat insulation and heat preservation effects.

[0011] In one specific feasible implementation, the preparation of solid ceramic microspheres and mica powder modified nylon fibers includes the following steps:

[0012] A silane coupling agent is added to a 95% ethanol solution, followed by solid ceramic microspheres and mica powder. The pH is adjusted to 3.5-5 to obtain a mixed solution. After soaking for 30-45 minutes, the solution is filtered, washed, and dried to obtain modified ceramic microspheres and mica powder. The modified ceramic microspheres and mica powder are then added to a 95% ethanol solution, and the pH is adjusted to 3.5-5. Nylon fibers are then immersed in the solution for 2-3 hours, removed, filtered, washed, and dried to obtain solid ceramic microspheres and mica powder modified nylon fibers.

[0013] By adopting the above technical solution, the preparation steps are relatively simple and the process requirements are low. Solid ceramic microspheres and mica powder can be grafted onto nylon fibers in a relatively uniform and dense manner, which can meet the heat preservation requirements of the subsequent fabric use process.

[0014] In one specific feasible implementation, the particle size of the solid ceramic microspheres is 1-4 micrometers, and the mesh size of the mica powder is 800-1250 mesh.

[0015] By adopting the above technical solution, the solid ceramic microspheres have a small particle size and can be evenly interspersed between the mica powder. The two work together to form a heat insulation and reflection path. Heat can be fully blocked by the layered structure of the mica powder and reflected back to the inner layer by the ceramic microspheres in the gaps, thus preserving the energy emitted by the body as much as possible. The resulting school uniform fabric has a good heat insulation effect.

[0016] In one specific feasible implementation, the mass ratio of solid ceramic microspheres to mica powder is 1:(4-5).

[0017] By adopting the above technical solution, the applicant conducted repeated experiments and set the mass ratio of solid ceramic microspheres and mica powder according to their density and volume. When the mass ratio of solid ceramic microspheres and mica powder was set to within the range of 1:(4-5), the two had the best heat insulation and reflection effect. This may be because the point-line network formed by solid ceramic microspheres and mica powder at this time provides more comprehensive heat insulation and reflection.

[0018] In one specific feasible implementation, the steps of modifying nylon fibers with hollow microspheres include: adding a silane coupling agent to a 95% ethanol solution, then adding hollow microspheres, adjusting the pH to 3.0-4.5, soaking for 30-40 minutes, filtering, washing, and drying to obtain modified hollow microspheres; adding the modified hollow microspheres to a 95% ethanol solution, adjusting the pH to 3.5-5, then immersing the nylon fibers in the solution, removing them after 2-2.5 hours, filtering, washing, and drying to obtain hollow microsphere modified nylon fibers.

[0019] By adopting the above technical solution, the preparation steps are relatively simple, the modification effect is good, and the hollow microspheres are tightly bonded to the nylon fibers, making them less likely to fall off during wear.

[0020] In one specific feasible implementation, hollow microspheres include one or more of hollow glass microspheres and hollow alumina microspheres.

[0021] By adopting the above technical solutions, hollow glass microspheres and hollow alumina microspheres are low in price, light in weight, highly stable, and have good thermal insulation properties. They are also easy to disperse and have high fluidity. The modified nylon fibers obtained are dimensionally and structurally stable, and have good thermal insulation effects.

[0022] In one specific feasible implementation, the hollow microspheres have a particle size of 30-100 micrometers.

[0023] By adopting the above technical solution, the hollow microspheres are smaller in size, can be more tightly bonded to the fibers, and the resulting fabric is smoother, more beautiful and easier to wear.

[0024] In one specific feasible implementation, the surface layer and the inner layer are bonded together with an adhesive.

[0025] By adopting the above technical solution, the bonding process is simple, and the surface layer and inner layer are tightly bonded, resulting in a flat and beautiful fabric that is easy to use as a thermal insulation school uniform fabric.

[0026] In summary, this application has the following beneficial effects:

[0027] 1. This application obtains the surface layer of the school uniform fabric by blending solid ceramic microspheres and mica powder modified nylon fibers with polyester fibers, and the inner layer of the school uniform fabric by blending hollow microsphere modified nylon fibers with viscose fibers. The surface layer is drapey and durable, the inner layer is moisture-wicking and breathable, the surface layer has good heat insulation and heat reflection capabilities, and the inner layer does not easily allow heat to flow. The combined effect results in a school uniform fabric with good heat preservation performance.

[0028] 2. This application, by limiting the yarn and blending ratios of the surface and inner layers, produces a fabric that combines the advantages of low price, comfortable wear, and good heat retention. By limiting the particle size of solid ceramic microspheres, the mesh count of mica powder, and the mass ratio of the two, a point-line network for heat insulation and heat reflection is constructed, improving the heat retention effect of the fabric. By limiting the type and proportion of hollow microspheres, the grafting effect of hollow microspheres on fibers is better, the fabric is lightweight and smooth, easy to wear, and air does not circulate easily, further improving the heat retention effect. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the embodiments. Except for Preparation Example 4, the average particle size of the solid ceramic microspheres in all preparation examples is 4 micrometers, the mesh size of the mica powder is 1250 mesh, and the average particle size of the hollow alumina microspheres is 70 micrometers. Unless otherwise specified, the experimental reagents used in the preparation examples and embodiments are all from conventional commercially available brands or obtained through conventional preparation processes.

[0030] Preparation Example

[0031] Preparation Example 1

[0032] 100g of silane coupling agent KH-570 was added to 2kg of 95% ethanol solution, followed by 80g of solid ceramic microspheres and 320g of mica powder. The pH was adjusted to 4 with oxalic acid, and the mixture was soaked for 40 minutes, then filtered, washed three times with pure water, and dried to obtain modified ceramic microspheres and mica powder. The modified ceramic microspheres and mica powder were then added to 2kg of 95% ethanol solution, and the pH was adjusted to 3.5. 200g of nylon fiber was then immersed in the solution, and after 2 hours, it was removed, filtered, washed three times with pure water, and dried to obtain solid ceramic microspheres and mica powder modified nylon fiber. The solid ceramic microspheres and mica powder modified nylon fiber were then blended with polyester fiber at a mass ratio of 2:1 to form a 40-count surface fabric.

[0033] Preparation Example 2

[0034] 100g of silane coupling agent KH-570 was added to 2kg of 95% ethanol solution, followed by 400g of solid ceramic microspheres. The pH was adjusted to 4 with oxalic acid, and the mixture was soaked for 40 minutes, then filtered, washed three times with pure water, and dried to obtain modified ceramic microspheres and mica powder. The modified ceramic microspheres and mica powder were then added to 2kg of 95% ethanol solution, and the pH was adjusted to 3.5. 200g of nylon fiber was then immersed in the solution. After 2 hours, the fiber was removed, filtered, washed three times with pure water, and dried to obtain solid ceramic microspheres and mica powder modified nylon fiber. The solid ceramic microspheres and mica powder modified nylon fiber were then blended with polyester fiber at a mass ratio of 2:1 to form a 40-count surface fabric.

[0035] Preparation Example 3

[0036] 100g of silane coupling agent KH-570 was added to 2kg of 95% ethanol solution, followed by 400g of mica powder. The pH was adjusted to 4 with oxalic acid. After soaking for 40 minutes, the mixture was filtered, washed three times with pure water, and dried to obtain modified ceramic microspheres and mica powder. The modified ceramic microspheres and mica powder were then added to 2kg of 95% ethanol solution, and the pH was adjusted to 3.5. 200g of nylon fiber was then immersed in the solution. After 2 hours, the fiber was removed, filtered, washed three times with pure water, and dried to obtain solid ceramic microspheres and mica powder modified nylon fiber. The solid ceramic microspheres and mica powder modified nylon fiber were then blended with polyester fiber at a mass ratio of 2:1 to form a 40-count surface fabric.

[0037] Preparation Example 4

[0038] The only difference between this preparation example and Preparation Example 1 is that the particle size of the solid ceramic microspheres is 10 micrometers.

[0039] Preparation Example 5

[0040] Add 100g of silane coupling agent KH-570 to 2kg of 95% ethanol solution, then add 400g of hollow alumina microspheres, adjust the pH to 4, soak for 30 minutes, then immerse polyester fibers in the mixture, remove after 2.5 hours, filter, wash three times with pure water, and dry to obtain modified hollow microspheres. Add the modified hollow microspheres to 2kg of 95% ethanol solution, adjust the pH to 3.5-5, then immerse 200g of nylon fibers, remove after 2 hours, filter, wash, and dry to obtain hollow microsphere modified nylon fibers. Blend the hollow microsphere modified nylon fibers with viscose fibers at a mass ratio of 1:2 to form a 30-count inner layer fabric.

[0041] Preparation Example 6

[0042] The only difference between this preparation example and preparation example 5 is that the hollow alumina microspheres have a particle size of 200 micrometers.

[0043] Example

[0044] Example 1

[0045] The outer fabric from Preparation Example 1 and the inner fabric from Preparation Example 5 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0046] Example 2

[0047] The outer fabric from Preparation Example 4 and the inner fabric from Preparation Example 5 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0048] Example 3

[0049] The outer fabric from Preparation Example 1 and the inner fabric from Preparation Example 6 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0050] Comparative Example

[0051] Comparative Example 1

[0052] The outer fabric from Preparation Example 2 and the inner fabric from Preparation Example 5 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0053] Comparative Example 2

[0054] The outer fabric from Preparation Example 3 and the inner fabric from Preparation Example 5 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0055] Comparative Example 3

[0056] Two sheets of the surface fabric from Preparation Example 1 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0057] Comparative Example 4

[0058] Two inner layer fabrics from Preparation Example 5 were hot-pressed together with polyamide hot melt adhesive at 105°C to obtain thermal insulation school uniform fabric.

[0059] Performance testing test 1: The thermal insulation school uniform fabrics prepared in Examples 1-3 and Comparative Examples 1-4 were irradiated under a 500W infrared lamp for 20 minutes. Then, the temperature of the school uniform fabric was measured using a temperature sensor to obtain temperature 1. The infrared lamp was turned off, and the temperature was measured again after 20 minutes to obtain temperature 2. The ambient temperature was kept constant at 25℃, and the thermal insulation rate was calculated as: thermal insulation rate = temperature 2 / temperature 1 * 100%. The test results are shown in Table 1.

[0060] Table 1

[0061]

[0062]

[0063] The specific embodiments described herein are merely illustrative of this application and are not intended to limit it. Those skilled in the art can make modifications to these embodiments without contributing any inventive step after reading this specification, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A thermal insulation school uniform fabric, characterized in that: It includes a surface layer and an inner layer: the surface layer is made of solid ceramic microspheres and a blend of mica powder modified nylon fiber and polyester fiber, and the inner layer is made of hollow microsphere modified nylon fiber and viscose fiber. The outer layer yarn count is 40, and the inner layer yarn count is 30. The mass ratio of the surface layer nylon fiber to polyester fiber is (2-3):1; the mass ratio of the inner layer viscose fiber to nylon fiber is (2-3):

1. The solid ceramic microspheres have a particle size of 1-4 micrometers, and the mica powder has a mesh size of 800-1250 mesh. The hollow microspheres have a particle size of 30-100 micrometers.

2. The thermal insulation school uniform fabric according to claim 1, characterized in that: The preparation of the solid ceramic microspheres and mica powder modified nylon fibers includes the following steps: A silane coupling agent is added to a 95% ethanol solution, followed by solid ceramic microspheres and mica powder. The pH is adjusted to 3.5-5 to obtain a mixed solution. After soaking for 30-45 minutes, the solution is filtered, washed, and dried to obtain modified ceramic microspheres and mica powder. The modified ceramic microspheres and mica powder are then added to a 95% ethanol solution, and the pH is adjusted to 3.5-5. Nylon fibers are then immersed in the solution for 2-3 hours, removed, filtered, washed, and dried to obtain solid ceramic microspheres and mica powder modified nylon fibers.

3. The thermal insulation school uniform fabric according to claim 1, characterized in that: The mass ratio of the solid ceramic microspheres to mica powder is 1:(4-5).

4. The thermal insulation school uniform fabric according to claim 1, characterized in that: The preparation steps of the hollow microsphere modified nylon fiber include: adding a silane coupling agent to a 95% ethanol solution, then adding hollow microspheres, adjusting the pH to 3.0-4.5, soaking for 30-40 minutes, filtering, washing, and drying to obtain modified hollow microspheres; adding the modified hollow microspheres to a 95% ethanol solution, adjusting the pH to 3.5-5, then immersing the nylon fiber in the solution, removing it after 2-2.5 hours, filtering, washing, and drying to obtain hollow microsphere modified nylon fiber.

5. The thermal insulation school uniform fabric according to claim 1, characterized in that: The surface layer and the inner layer are bonded together with adhesive.

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