Temperature-adjustable impact-resistant fabric and production method thereof

Abstract

The invention relates to a temperature-adjustable impact-resistant fabric and a production method thereof, and belongs to the technical field of textiles. The temperature-adjustable impact-resistant fabric comprises a three-dimensional spacer fabric and a PU coating coated at the bottom of the three-dimensional spacer fabric, the three-dimensional spacer fabric comprises a surface layer located on the upper surface and a spacer layer connected with the surface layer, the spacer layer is located between the surface layer and the PU coating, the spacer layer comprises a plurality of spacer filaments arranged at intervals, and the spacer filaments are connected with the PU coating. A fluid conveying pipe is laid between every two adjacent spaced filaments. The temperature-adjustable impact-resistant fabric disclosed by the invention is controllable and adjustable in temperature, long in temperature control time and good in impact-resistant buffering effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of textiles and relates to a temperature-adjustable and impact-resistant fabric and a production method thereof. Background Art

[0002] In high-temperature or low-temperature working environments, the temperature of the staff's body surface will rise or fall rapidly due to the excessively high or low ambient temperature, thus causing physical discomfort, affecting work efficiency, and in severe cases, heat stroke or hypothermia may occur, threatening the life safety of the staff. In addition, in outdoor work, it often happens that high-altitude falling objects or item collisions cause injuries to people, and corresponding buffer protection for the human body is required. Chinese patent document CN107458051A discloses a double-sided high-strength impact-resistant textile fabric, which forms a first impact-resistant layer by filling elastic cotton in a hexagonal prism structure and forms a second impact-resistant layer by filling impact-resistant spheres, so as to achieve the purpose of fabric impact resistance. The purpose of fabric heat preservation is mostly achieved by simply filling various heat preservation materials. For example, in the technical solutions disclosed in Chinese patent documents CN105919199A and CN107718786A, the heat preservation of the fabric is achieved through silica gel filling and PE flocking, and in the technical solution disclosed in Chinese patent document CN102366178A, the heat preservation of the fabric is achieved through fillers such as sponge, thermoplastic elastomer, and silica gel. The above-mentioned prior arts have the technical problems of heat preservation and impact protection required for staff in special working environments. Summary of the Invention

[0003] The object of the present invention is to address the technical problem that in the prior art, staff in special working environments need heat preservation and impact protection. A temperature-adjustable and impact-resistant fabric is proposed. By installing fluid delivery pipes that can communicate with the outside world in the fabric, temperature control adjustment is achieved, and phase change materials are used to extend the time of temperature control. At the same time, a three-dimensional spacer layer is installed to provide an impact buffering effect, and a high-strength fiber surface layer is used to achieve the effect of puncture resistance.

[0004] The object of the present invention can be achieved by the following technical solutions:

[0005] A temperature-adjustable and impact-resistant fabric, the temperature-adjustable and impact-resistant fabric comprising a three-dimensional spacer fabric and a PU coating coated on the bottom of the three-dimensional spacer fabric. The three-dimensional spacer fabric comprises a surface layer on the upper surface and a spacer layer connected to the surface layer. The spacer layer is located between the surface layer and the PU coating. The spacer layer comprises a plurality of spacer filaments arranged at intervals, and a fluid delivery pipe is laid between two adjacent spacer filaments.

[0006] The width between two adjacent spacer filaments is greater than or equal to the diameter of the fluid delivery pipe, so that the fluid delivery pipe can be smoothly laid between the spacer filaments. The spacer filaments are located between the surface layer and the PU coating, and are used to support the surface layer and the PU coating. The surface layer is connected above the spacer filaments.

[0007] Preferably, the three-dimensional spacer fabric further includes a bottom layer connected below the spacer layer. The bottom layer is composed of a plurality of strip-shaped fabrics arranged at intervals. The strip-shaped fabrics correspond to the spacer filaments one by one and have the same length direction. The width of the strip-shaped fabric is greater than that of the spacer filament.

[0008] The width between two adjacent strip-shaped fabrics is less than the diameter of the fluid delivery pipe.

[0009] Both the spacer filaments and the strip-shaped fabrics are strip-shaped, and the width of the strip-shaped fabric is greater than that of the spacer filament, which can fix the fluid delivery pipe more firmly in the spacer layer.

[0010] The surface layer is connected above the spacer filaments, and the strip-shaped fabric is connected below the spacer filaments. The strip-shaped fabric is connected below the PU coating. The spacer filaments support the surface layer and the bottom layer.

[0011] Preferably, the spacer filaments are filled with phase change microcapsules.

[0012] Preferably, the thickness of the temperature-adjustable and impact-resistant fabric is 4 mm to 8 mm, the thickness of the surface layer is 0.2 mm to 0.4 mm, the thickness of the bottom layer is 0.2 mm to 0.4 mm, and the diameter of the fluid delivery pipe is 4 mm to 6 mm.

[0013] The three-dimensional spacer fabric of the present invention has a three-dimensional hollow structure, and the surface layer and the bottom layer are supported by thick spacer filaments in the middle. The surface layer of the present invention is a tight weave. The strip-shaped fabrics and the spacer filaments of the bottom layer are both strip-shaped structures, forming longitudinal strip-shaped grooves, i.e., the embedding space for the fluid delivery pipes. By laying fluid delivery pipes in the spacer layer, the delivery of cold and warm fluids can be realized, so as to achieve the purpose of temperature adjustment of the fabric. Further, the present invention is filled with a phase change material in the spacer layer of the fabric, and the temperature adjustment time can be extended by absorbing and releasing heat. The surface layer and the bottom layer are woven from aramid and high-strength polyethylene fibers as raw materials, with high strength and good toughness, endowing the fabric with stab-proof function. Moreover, the spacer filaments are made of polyester thick monofilaments as raw materials, and the monofilaments are interwoven with the upper and lower two surfaces to form a spacer layer with a hollow structure. When impacted, the middle spacer layer will bend and deform, playing an excellent buffering role, so as to achieve the impact-resistant effect.

[0014] Another object of the present invention is to provide a production method of a temperature-adjustable and impact-resistant fabric. The production method includes the following steps

[0015] S1. A three-dimensional spacer fabric having a surface layer, a spacer layer and a bottom layer is woven by a double needle bed warp knitting process;

[0016] S2, laying the fluid delivery pipe between two adjacent spacer wire strips;

[0017] S3. Use PU coating glue to scrape and coat the bottom of the three-dimensional spacer fabric to fix the fluid delivery tube in the three-dimensional spacer fabric.

[0018] Preferably, there is a step of filling phase change microcapsules between steps S1 and S2, specifically: phase change microcapsules are mixed with aqueous polyurethane emulsion to form a phase change finishing liquid, the three-dimensional spacer fabric is immersed in the phase change finishing liquid, and then taken out and dried at 70°C to 90°C to deposit the phase change microcapsules in the spacer layer of the three-dimensional spacer fabric.

[0019] Preferably, the raw material of the surface layer in step S1 is one or both of aramid filaments and high-strength polyethylene fiber filaments, the raw material of the bottom layer is one or both of aramid filaments and high-strength polyethylene fiber filaments, and the raw material of the spacer wire strips is polyester monofilament.

[0020] The high-strength polyethylene fiber is an ultra-high molecular weight polyethylene fiber.

[0021] Preferably, the fineness of the aramid filaments and high-strength polyethylene fiber filaments is 300D-1000D, and the diameter of the polyester monofilament is 0.1-0.5mm.

[0022] Preferably, the phase change transformation temperature of the phase change microcapsule is 26°C to 30°C.

[0023] Preferably, the mass fraction of the phase change microcapsules in the phase change finishing liquid is 15% to 25%.

[0024] The fluid delivery tube is a PU tube or a silicone tube. The PU tube or the silicone tube has good flexibility and elasticity, which is beneficial to the overall impact resistance of the fabric.

[0025] Compared with the prior art, the present invention has the following beneficial effects: the temperature of the fabric can be controlled and adjusted, and the temperature control time is long, and at the same time it has a good impact resistance and buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the cross-sectional structure of the temperature-adjustable impact-resistant fabric in Example 1 of the present invention.

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the temperature-adjustable impact-resistant fabric in Example 2 of the present invention.

[0028] Figure 3This is a schematic cross-sectional structure diagram of the three-dimensional spacer fabric without filled phase change microcapsules in Embodiment 2 of the present invention. Detailed implementation manners

[0029] The following are specific embodiments of the present invention. The technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0030] Embodiment 1

[0031] As Figure 1 shown, the temperature-adjustable and impact-resistant fabric in this embodiment includes a three-dimensional spacer fabric 1 and a PU coating 2 coated on the bottom of the three-dimensional spacer fabric 1. The three-dimensional spacer fabric 1 includes a surface layer 11 on the upper surface and a spacer layer 12 connected to the surface layer 11. The surface layer is a tight weave. The spacer layer 12 is composed of a plurality of spaced-apart spacer filaments 121. The spacer filaments 121 are located between the surface layer 11 and the PU coating 2 and are used to support the surface layer and the PU coating 2. The upper part of the spacer filaments 121 is connected to the surface layer 11. A fluid delivery pipe 122 is laid between two adjacent spacer filaments 121. The width between two adjacent spacer filaments 121 is greater than or equal to the diameter of the fluid delivery pipe 122 to facilitate the smooth laying of the fluid delivery pipe 122 between the spacer filaments 121. Phase change microcapsules 123 are also filled in the spacer filaments 121.

[0032] The thickness of the temperature-adjustable and impact-resistant fabric in this embodiment is 5.8 mm. Among them, the thickness of the surface layer 11 is 0.4 mm, the diameter of the fluid delivery pipe is 5 mm, and the thickness of the PU coating 2 is 0.4 mm.

[0033] Embodiment 2

[0034] As Figure 2 and Figure 3 shown, the temperature-adjustable and impact-resistant fabric in this embodiment includes a three-dimensional spacer fabric 1 and a PU coating 2 coated on the bottom of the three-dimensional spacer fabric 1. The three-dimensional spacer fabric 1 includes a surface layer 11, a spacer layer 12, and a bottom layer 13 that are connected in sequence. The surface layer 11 is a tight weave; the spacer layer 12 is composed of a plurality of spaced-apart spacer filaments 121, and the bottom layer 13 is composed of a plurality of spaced strip-shaped fabrics 131. The strip-shaped fabrics 131 correspond to the spacer filaments 121 one by one and have the same length direction, and the width of the strip-shaped fabrics 131 is greater than that of the spacer filaments 121; the upper part of the spacer filaments 121 is connected to the surface layer 11, the lower part is connected to the strip-shaped fabrics 131, and the lower part of the strip-shaped fabrics 131 is connected to the PU coating 2. The spacer filaments 121 support the surface layer and the bottom layer.

[0035] A fluid delivery tube 122 is laid between two adjacent spacer wires 121 of the spacer layer 12. The width between two adjacent spacer wires 121 is greater than or equal to the diameter of the fluid delivery tube 122, so that the fluid delivery tube 122 can be smoothly laid between the spacer wires 121. The width between two adjacent strip fabrics 131 is less than the diameter of the fluid delivery tube 122. The spacer wires 121 of the spacer layer 12 are also filled with phase change microcapsules 123.

[0036] In this embodiment, the thickness of the temperature-adjustable impact-resistant fabric is 6 mm, wherein the thickness of the surface layer 11 and the bottom layer 13 are both 0.3 mm, the diameter of the fluid delivery pipe is 5 mm, and the thickness of the PU coating 2 is 0.4 mm.

[0037] Example 3

[0038] The production steps of the temperature-adjustable impact-resistant fabric in this embodiment are as follows:

[0039] (1) 800D aramid filament was selected as the surface layer material and 0.5 mm diameter polyester monofilament was selected as the spacer layer material. A three-dimensional spacer fabric having a surface layer and a spacer layer was woven by a double needle bed warp knitting process, and the surface layer was made of ribbed structure;

[0040] (2) preparing a phase change finishing liquid by mixing phase change microcapsules with an aqueous polyurethane emulsion, wherein the mass fraction of the phase change microcapsules in the phase change finishing liquid is 20%, and the phase change conversion temperature of the phase change microcapsules is 28° C., immersing the three-dimensional spacer fabric in the phase change finishing liquid, and then taking it out and drying it at 80° C., so that the phase change microcapsules are deposited in the spacer layer of the three-dimensional spacer fabric;

[0041] (3) Laying the fluid delivery pipe between two adjacent spacer wire strips;

[0042] (4) PU coating glue is applied on the bottom of the three-dimensional spacer fabric to fix the fluid delivery tube in the three-dimensional spacer fabric.

[0043] The fabric prepared in this embodiment is a temperature-adjustable impact-resistant fabric having the structure in Embodiment 1.

[0044] Example 4

[0045] The production steps of the temperature-adjustable impact-resistant fabric in this embodiment are as follows:

[0046] (1) 800D aramid filament is selected as the surface layer material, 800D ultra-high molecular weight polyethylene fiber filament is selected as the bottom layer fabric, and 0.3mm diameter polyester monofilament is selected as the spacer layer material. A three-dimensional spacer fabric having a surface layer, a spacer layer and a bottom layer is woven by a double needle bed warp knitting process, and the surface layer adopts a rib structure;

[0047] (2) Prepare a phase change finishing solution by mixing phase change microcapsules with an aqueous polyurethane emulsion. The mass fraction of the phase change microcapsules in the phase change finishing solution is 20%, and the phase change conversion temperature of the phase change microcapsules is 28°C. Immerse the three-dimensional spacer fabric in the phase change finishing solution, and then take it out and dry it at 80°C to deposit the phase change microcapsules in the spacer layer of the three-dimensional spacer fabric;

[0048] (3) Lay the fluid delivery tube between two adjacent spacer filaments;

[0049] (4) Use a PU coating adhesive to scrape and coat on the bottom of the three-dimensional spacer fabric to fix the fluid delivery tube in the three-dimensional spacer fabric.

[0050] The fabric obtained in this example is a temperature-adjustable and impact-resistant fabric with the structure in Example 2.

[0051] Example 5

[0052] The production steps of the temperature-adjustable and impact-resistant fabric in this example are as follows:

[0053] (1) Select 500D aramid filaments as the surface layer material, 600D ultra-high molecular weight polyethylene fiber filaments as the bottom layer fabric, and 0.2mm diameter polyester monofilaments as the spacer layer material, and use a double needle bed warp knitting process to weave a three-dimensional spacer fabric with a surface layer, a spacer layer, and a bottom layer; the surface layer adopts a ribbed structure;

[0054] (2) Prepare a phase change finishing solution by mixing phase change microcapsules with an aqueous polyurethane emulsion. The mass fraction of the phase change microcapsules in the phase change finishing solution is 25%, and the phase change conversion temperature of the phase change microcapsules is 26°C. Immerse the three-dimensional spacer fabric in the phase change finishing solution, and then take it out and dry it at 70°C to deposit the phase change microcapsules in the spacer layer of the three-dimensional spacer fabric;

[0055] (3) Lay the fluid delivery tube between two adjacent spacer filaments;

[0056] (4) Use a PU coating adhesive to scrape and coat on the bottom of the three-dimensional spacer fabric to fix the fluid delivery tube in the three-dimensional spacer fabric.

[0057] The fabric obtained in this example is a temperature-adjustable and impact-resistant fabric with the structure in Example 2.

[0058] Example 6

[0059] The production steps of the temperature-adjustable and impact-resistant fabric in this example are as follows:

[0060] (1) Select 1000D aramid filaments as the surface layer material, 800D ultra-high molecular weight polyethylene fiber filaments as the bottom layer material, and polyester monofilaments with a diameter of 0.5 mm as the spacer layer material, and use a double needle bed warp knitting process to weave a three-dimensional spacer fabric with a surface layer, a spacer layer, and a bottom layer; the surface layer adopts a ribbed structure;

[0061] (2) Prepare a phase change finishing liquid by mixing phase change microcapsules and aqueous polyurethane emulsion. The mass fraction of phase change microcapsules in the phase change finishing liquid is 18%, and the phase change conversion temperature of the phase change microcapsules is 29°C. Immerse the three-dimensional spacer fabric in the phase change finishing liquid, and then take it out and dry it at 90°C to deposit the phase change microcapsules in the spacer layer of the three-dimensional spacer fabric;

[0062] (3) Lay the fluid delivery pipe between two adjacent spacer filaments;

[0063] (4) Use PU coating glue to scrape and coat on the bottom of the three-dimensional spacer fabric to fix the fluid delivery pipe in the three-dimensional spacer fabric.

[0064] The fabric prepared in this example is a temperature-adjustable and impact-resistant fabric with the structure in Example 2.

[0065] In the above embodiments of the present invention, the thickness of the temperature-adjustable and impact-resistant fabric can also be 4 mm, 5 mm, 7 mm, 8 mm, or any value in the range of 4 mm to 8 mm. The thickness of the surface layer can also be 0.2 mm or any value in the range of 0.2 mm to 0.4 mm. The thickness of the bottom layer is 0.2 mm or any value in the range of 0.2 mm to 0.4 mm. The diameter of the fluid delivery pipe is 4 mm, 6 mm, or any value in the range of 4 mm to 6 mm. The fineness of the aramid filaments and high-strength polyethylene fiber filaments can also be 300D, 400D, 600D, 700D, 900D, 1000D, or any value in the range of 300D - 1000D. The diameter of the polyester monofilaments is 0.2 mm or any value in the range of 0.1 mm to 0.5 mm. The raw material of the surface layer can also be high-strength polyethylene fiber filaments, and the raw material of the bottom layer can also be aramid filaments.

[0066] Comparative Example 1

[0067] A fabric with a thickness of 6 mm woven from polyester monofilaments with a diameter of 0.3 mm, and the others are the same as in Example 4.

[0068] For the temperature-adjustable and impact-resistant fabric prepared by the present invention, when the ambient temperature is 35 °C and a low-temperature liquid at 15 °C is introduced into the tube for 10 min, the temperature of the fabric in Example 3 can be maintained at 26 °C for 27 min, the temperature of the fabric in Example 4 can be maintained at 26 °C for 33 min, the temperature of the fabric in Example 5 can be maintained at 26 °C for 30 min, and the temperature of the fabric in Example 6 can be maintained at 26 °C for 28 min. Meanwhile, an impact test was carried out on the fabric by using a falling weight impact tester. The results show that at an impact speed of 1.5 m / s, the peak impact load of the fabric in Example 3 is reduced by 46% compared with that in Comparative Example 1, the peak impact load of the fabric in Example 4 is reduced by 52% compared with that in Comparative Example 1, the peak impact load of the fabric in Example 5 is reduced by 50% compared with that in Comparative Example 1, and the peak impact load of the fabric in Example 5 is reduced by 49% compared with that in Comparative Example 1.

[0069] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An adjustable temperature and impact-resistant fabric, characterized in that, The temperature-adjustable and impact-resistant fabric comprises a three-dimensional spacer fabric and a PU coating applied to the bottom of the three-dimensional spacer fabric. The three-dimensional spacer fabric includes a surface layer on the upper surface and a spacer layer connected to the surface layer. The spacer layer is located between the surface layer and the PU coating. The spacer layer includes a plurality of spacer filaments arranged at intervals, and a fluid delivery pipe is laid between two adjacent spacer filaments.

2. The temperature-adjustable and impact-resistant fabric according to claim 1, wherein, The three-dimensional spacer fabric further includes a bottom layer connected below the spacer layer. The bottom layer is composed of a plurality of strip-shaped fabrics arranged at intervals. The strip-shaped fabrics correspond to the spacer filaments one by one and have the same length direction. The width of the strip-shaped fabric is greater than that of the spacer filament.

3. The temperature-adjustable and impact-resistant fabric according to claim 1, characterized in that, The spacer filaments are filled with phase change microcapsules.

4. The temperature-adjustable and impact-resistant fabric according to claim 2, wherein The thickness of the temperature-adjustable and impact-resistant fabric is 4 mm to 8 mm, the thickness of the surface layer is 0.2 mm to 0.4 mm, the thickness of the bottom layer is 0.2 mm to 0.4 mm, and the diameter of the fluid delivery pipe is 4 mm to 6 mm.

5. The production method of the temperature-adjustable and impact-resistant fabric according to any one of claims 1 to 4, characterized in that The production method includes the following steps. S1. Weave a three-dimensional spacer fabric with a surface layer, a spacer layer and a bottom layer by double needle bed warp knitting process. S2. Lay the fluid delivery pipe between two adjacent spacer filaments. S3. Use a PU coating adhesive to scrape and coat on the bottom of the three-dimensional spacer fabric to fix the fluid delivery pipe in the three-dimensional spacer fabric.

6. The production method of the temperature-adjustable and impact-resistant fabric according to claim 5, characterized in that, There is also a step of filling phase change microcapsules between steps S1 and S2. Specifically, phase change microcapsules and an aqueous polyurethane emulsion are formulated into a phase change finishing liquid. The three-dimensional spacer fabric is immersed in the phase change finishing liquid and then taken out and dried at 70 °C to 90 °C to deposit the phase change microcapsules in the spacer layer of the three-dimensional spacer fabric.

7. The production method of the temperature-adjustable and impact-resistant fabric according to claim 5, characterized in that In step S1, the raw material of the surface layer is one or two of aramid filaments and high-strength polyethylene fiber filaments. The raw material of the bottom layer is one or two of aramid filaments and high-strength polyethylene fiber filaments. The raw material of the spacer filaments is polyester monofilament.

8. The production method of the temperature-adjustable and impact-resistant fabric according to claim 7, characterized in that The fineness of the aramid filaments and high-strength polyethylene fiber filaments is 300 D - 1000 D, and the diameter of the polyester monofilament is 0.1 - 0.5 mm.

9. The production method of the temperature-adjustable and impact-resistant fabric according to claim 6, characterized in that The phase change conversion temperature of the phase change microcapsules is 26 °C to 30 °C.

10. The production method of the temperature-adjustable and impact-resistant fabric according to claim 6, characterized in that, The mass fraction of the phase change microcapsules in the phase change finishing liquid is 15% - 25%.

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