A temperature-adaptive fabric, its preparation method and application

Abstract

This invention discloses a temperature-adaptive fabric, its preparation method, and its applications, belonging to the field of thermal management fabric technology. The invention uses a polyamide fiber fabric as a matrix, coats one side of the matrix with a photothermal material, dries it, and then cuts an opening pattern into the resulting sample to obtain the temperature-adaptive fabric. The application range of this temperature-adaptive fabric is not limited to outdoor environments; it can also be applied to fields such as smart clothing manufacturing, helping people achieve intelligent regulation of body temperature.

Description

Technical Field

[0001] This invention belongs to the field of thermal management fabric technology, and particularly relates to a temperature-adaptive fabric, its preparation method and application. Background Technology

[0002] Thermal comfort is directly related to human health and safety and is an important issue in daily life. Indoor environments, temperature can be regulated using various cooling / heating devices (such as heating, ventilation, and air conditioning). Meanwhile, people also spend a significant amount of time outdoors engaging in essential activities. In contrast, due to unpredictable weather and vast open spaces, there is a lack of universal thermal management methods for outdoor environments. Outdoor temperatures can vary by as much as 20°C within a single day, exceeding the body's self-regulating capacity; therefore, outdoor thermal management strategies are particularly important.

[0003] Personal thermal management is a technology for localized temperature regulation of an individual, and it has attracted increasing attention due to its advantages such as energy saving, cost-effectiveness, and personalized design. Fabrics, as the body's second skin, play a crucial role in protection and temperature regulation, making them suitable for the field of personal thermal management. Extensive research has been conducted in the field of personal thermal management fabrics, resulting in the development of a series of temperature control methods, including photothermal heating, Joule heating, radiative heating / cooling, and heating / cooling based on phase change materials. Among these, bimodal thermal management fabrics have a significant advantage due to their ability to integrate cooling and heating functions on both sides of a single fabric. However, most reported thermal management fabrics exhibit static thermal regulation characteristics after material fabrication, making it difficult to adapt to the frequent changes in ambient temperature that require temperature regulation. To address this issue, an adaptive thermal management fabric capable of automatically switching between cold and hot modes based on changes in ambient temperature, with zero energy input, is of great significance and urgently needed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a temperature-adaptive fabric, its preparation method, and its applications. The temperature-adaptive fabric can automatically adjust body temperature according to changes in ambient temperature.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] One of the objectives of this invention is to provide a temperature-adaptive fabric comprising a polyamide fiber fabric and a photothermal material coating applied to the polyamide fiber fabric, and having an open pattern on the temperature-adaptive fabric.

[0007] The temperature-adaptive fabric provided by this invention absorbs solar energy and converts it into heat energy in outdoor low-temperature and sunlight environments, thereby heating the human body. When the temperature rises, the evaporation of sweat causes the polyamide fiber fabric to absorb moisture and expand, which in turn causes the photothermal material coating to deform and the fabric opening pattern to bend away from the human body, thereby causing sweat to evaporate, thus taking away heat and lowering the body temperature, achieving the purpose of automatic temperature regulation.

[0008] Furthermore, the thickness of the polyamide fiber fabric is 50-1000 μm.

[0009] Furthermore, the polyamide fiber fabric is processed by one of the following methods: woven, knitted, or nonwoven fabric manufacturing.

[0010] Furthermore, the photothermal material coating contains at least one of carbon nanotubes, carbon black, carbon powder, graphene, MXene, PPy@MXene, metal nanoparticles, metal nanowires, black TiO2, MoO3 quantum dots, and Fe3O4.

[0011] The second objective of this invention is to provide a method for preparing a temperature-adaptive fabric, comprising the following steps: using a polyamide fiber fabric as a substrate, coating a photothermal material on any side of the substrate, drying it, and then cutting an opening pattern on the resulting sample to obtain the temperature-adaptive fabric.

[0012] Furthermore, the coating method is at least one of screen printing, brushing, and spraying.

[0013] Furthermore, the pattern is cut using laser cutting, and there is at least one point connecting the pattern to the substrate.

[0014] Furthermore, the coating amount of the photothermal material is 1-6 mg / cm³. 2 .

[0015] The third objective of this invention is to provide an application of temperature-adaptive fabric in smart clothing manufacturing.

[0016] The fourth objective of this invention is to provide an application of temperature-adaptive fabric in the manufacture of outdoor materials.

[0017] The temperature-adaptive fabric provided by this invention changes its working mode according to environmental changes, thereby achieving intelligent regulation of human body temperature.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects:

[0019] This invention achieves intelligent temperature regulation of fabrics by incorporating a photothermal material coating and an openwork pattern. In low-temperature, light-illuminating environments, the photothermal material coating absorbs solar energy and converts it into heat, providing warmth to the body and achieving the purpose of warming. In high-temperature environments, the body produces sweat and it evaporates. The polyamide fabric absorbs moisture and expands, while the coating's volume change is minimal, causing it to deform. This causes the openwork pattern to bend away from the body, promoting sweat evaporation and enhancing heat convection, thereby achieving the purpose of cooling. This temperature-adaptive function automatically adjusts according to environmental changes, making the fabric more flexible in use.

[0020] The application scope of this invention is not limited to outdoor environments, but can also be applied to fields such as smart clothing manufacturing, helping people to achieve intelligent regulation of body temperature. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a schematic diagram illustrating the working principle of the temperature-adaptive fabric of the present invention;

[0023] Figure 2 This is a flowchart illustrating the preparation process of the temperature-adaptive fabric of the present invention.

[0024] Figure 3 In the image, 'a' is a scanning electron microscope image of the MXene nanosheets in Example 1. Figure 3 b in the image is a scanning electron microscope image of the PPy@MXene nanomaterial in Example 1;

[0025] Figure 4 A photograph of the temperature-adaptive fabric prepared in Example 1;

[0026] Figure 5 The images show the microstructure of the temperature-adaptive fabric prepared in Example 1, where a and a' are microstructures of the polyamide fiber fabric, and b and b' are microstructures of the fabric containing the PPy@MXene nanophotothermal material coating.

[0027] Figure 6 In this context, 'a' represents the state of the temperature-adaptive fabric prepared in Example 1 on the moisture-ventilated front chamber. Figure 6 In this context, 'b' represents the state of the temperature-adaptive fabric prepared in Example 1 on the chamber 30 seconds after moisture is introduced;

[0028] Figure 7 The relative humidity changes inside a chamber with the temperature-adaptive fabric prepared in Example 1 after moisture is introduced.

[0029] Figure 8 Temperature changes of the temperature-adaptive fabric prepared in Example 1 under a solar simulator;

[0030] Figure 9 A schematic diagram showing the temperature-adaptive fabric prepared in Example 1 being attached to the back of a T-shirt worn by a volunteer;

[0031] Figure 10 The graph shows the change in bending angle of PPy@MXene / PA coated fabrics of different thicknesses prepared in Examples 1-3 during the opening and closing of the moisture airflow.

[0032] Figure 11 The graph shows the relative humidity change of the PPy@MXene / PA coated fabric prepared in Example 1 inside the chamber after moisture was introduced.

[0033] Figure 12 Temperature changes of the PPy@MXene / PA coated fabric prepared in Example 1 under a solar simulator;

[0034] Figure 13 The image shows a scanning electron microscope (SEM) image of the coated fabric prepared in Example 4, where a is 500 μm and b is 10 μm.

[0035] Figure 14 Temperature variation diagram of the coated fabric prepared in Example 4 under a solar simulator;

[0036] Figure 15 Temperature variation diagram of the coated fabric prepared in Example 5 under a solar simulator;

[0037] Figure 16 Temperature variation diagram of the coated fabric prepared in Example 6 under a solar simulator. Detailed Implementation

[0038] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0039] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Every smaller range between any stated value or intermediate value within a stated range, and any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0040] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0041] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be readily apparent to those skilled in the art. This specification and embodiments are merely exemplary.

[0042] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0043] This invention provides a temperature-adaptive fabric, wherein one side of the fabric is a polyamide fiber fabric and the other side is a photothermal material coating, and the fabric has an open pattern. The thickness of the polyamide fiber fabric is 50-1000 μm. A schematic diagram of its working principle is shown below. Figure 1 As shown, in outdoor low-temperature, high-sunlight environments, the photothermal material coating absorbs solar energy and converts it into heat, thus warming the body. When the temperature rises, sweat evaporation causes the polyamide fiber fabric to absorb moisture and expand, while the coating volume changes little. This causes the fabric's opening pattern to bend away from the body, allowing sweat to evaporate and carrying away heat, thus lowering body temperature. The temperature-adaptive fabric's working mode changes according to environmental changes, thereby achieving intelligent regulation of the body's temperature.

[0044] The method for preparing the temperature-adaptive fabric includes the following steps:

[0045] Using polyamide fiber fabric as the matrix, a photothermal material coating is applied to any side of the matrix, dried, and then an opening pattern is cut out on the resulting sample to obtain a temperature-adaptive fabric.

[0046] In some embodiments, the polyamide fiber fabric can be processed by one of the following methods: woven, knitted, or nonwoven fabric manufacturing. This variety of choices is intended to address different environmental conditions. For example, in the following embodiments of the invention, the polyamide fiber fabric (PA6) can be prepared by electrospinning, specifically including the following steps: adding polyamide powder to a mixed solution of formic acid and acetic acid (mass ratio of formic acid to acetic acid is 1:1) to obtain a polyamide solution; and preparing the polyamide fiber fabric from the polyamide solution using electrospinning technology. The electrospinning conditions are: syringe advance speed of 0.5 mL / h, distance between the needle tip and the receiving roller maintained at 20 cm, receiving roller speed of 200 rpm, voltage of 22 kV, and spinning time of 8 h. As another example, the polyamide fiber fabric can also be prepared by a woven process.

[0047] In some embodiments, the photothermal effect nanomaterial contained in the photothermal material coating may be selected from at least one of carbon nanotubes, carbon black, carbon powder, graphene, MXene, PPy@MXene, metal nanoparticles, metal nanowires, black TiO2, MoO3 quantum dots, and Fe3O4. This variety of selection is intended to address different environmental conditions. The photothermal material coating is a composite coating of polymer and photothermal effect nanomaterials prepared by self-polymerization of photothermal particles and polymer monomers. Exemplarily, in the following embodiments of the present invention, the photothermal effect nanomaterial contained in the photothermal material coating may be selected from MXene or PPy@MXene.

[0048] For example, in the following embodiments of the present invention, the photothermal material coating can be selected as polypyrrole (PPy)@MXene photothermal material, specifically including the following steps: dispersing MXene nanosheets in deionized water to obtain an MXene dispersion, then adding pyrrole (Py) monomer, stirring, centrifuging, washing, and redispersing the obtained PPy@MXene nanomaterials in deionized water. The MXene nanosheets are self-made and exist in a single-layer state. Compared with commercially available multilayer MXene nanosheets, the single-layer MXene nanosheets provided by the present invention have superior performance. Furthermore, the photothermal performance of the synthesized PPy@MXene composite material is improved compared to that of pure MXene.

[0049] In some embodiments, the coating method may be selected from at least one of screen printing, brushing, and spraying methods, with multiple selections intended to address different environmental conditions. Exemplarily, in the following embodiments of the invention, the coating method may be brushing.

[0050] In some embodiments, the pattern is cut using laser cutting, and the pattern is connected to the substrate at least at one point. Specifically, the pattern is designed in the computer software SolidWorks, and then cut according to the designed pattern using a laser cutter (100W laser intensity).

[0051] In some embodiments, the coating and drying process may be repeated multiple times until the amount of photothermal material coated on the surface of the polyamide fiber fabric is 1-6 mg / cm². 2 For example, in the following embodiments of the present invention, the coating amount can be selected as 1 mg / cm³. 2 2mg / cm 2 3mg / cm 2 6mg / cm 2 The amount of coating has little effect on the photothermal properties of the material.

[0052] The resulting temperature-adaptive fabric can be used in the manufacture of smart clothing or outdoor materials.

[0053] Unless otherwise specified, "room temperature" in this invention refers to 20±2℃.

[0054] All raw materials used in this invention were purchased from the market.

[0055] The technical solution of the present invention will be further illustrated by the following embodiments.

[0056] Figure 1 This is a schematic diagram illustrating the working principle of the temperature-adaptive fabric of the present invention.

[0057] Figure 2 This is a flowchart illustrating the preparation process of the temperature-adaptive fabric of the present invention.

[0058] Example 1

[0059] A method for preparing a temperature-adaptive fabric, the preparation flowchart is shown below. Figure 2 Specifically, it includes the following steps:

[0060] (1) Preparation of polyamide fiber fabric (PA6): Polyamide powder was added to a mixed solution of formic acid and acetic acid (the mass ratio of formic acid and acetic acid was 1:1) and stirred thoroughly for 12 h to obtain a polyamide solution with a concentration of 15 wt%. The obtained polyamide solution was placed on an electrospinning injection pump for electrospinning. The electrospinning conditions were: the syringe advance speed was 0.5 mL / h, the distance between the needle tip and the receiving roller was 20 cm, the speed of the receiving roller was 200 rpm, and the voltage was 22 kV. After spinning for 8 h, the polyamide fiber fabric was removed from the receiving roller to obtain a polyamide fiber fabric with a thickness of 160 μm.

[0061] (2) Preparation of polypyrrole (PPy)@MXene nanophotothermal materials:

[0062] Preparation of MXene nanosheet dispersion: 2g of lithium fluoride powder was slowly added to 40mL of 9mol / L concentrated hydrochloric acid and stirred at room temperature for 30 minutes. Then, 2g of Ti3AlC2 was slowly added and stirred at 35℃ for 48 hours. The resulting dispersion was then centrifuged and washed with a large amount of water until its pH value was 6. The obtained MXene was redispersed in water and ultrasonicated for 1h using an ultrasonic cleaner with a power of 100W to obtain an MXene nanosheet dispersion with a concentration of 5mg / mL.

[0063] Take 40 mL of MXene dispersion and slowly add 50 μL of pyrrole (Py) monomer, stir at 400 rpm for 6 h; then centrifuge and wash with water 3 times to obtain PPy@MXene nanophotothermal material. Redisperse the obtained PPy@MXene nanophotothermal material in 40 mL of deionized water to obtain PPy@MXene nanophotothermal material dispersion.

[0064] (3) Preparation of PPy@MXene / PA coated fabric: The PPy@MXene nanophotothermal material dispersion was brushed onto one side of a polyamide fiber fabric (PA6) and dried in an oven at 60°C. The brushing and drying steps were repeated multiple times until the coating content on the surface of the polyamide fiber fabric reached 1 mg / cm³. 2 PPy@MXene / PA coated fabric was obtained (one side of the PPy@MXene / PA coated fabric is a polyamide fiber fabric, and the other side is a coating containing PPy@MXene nanophotothermal material);

[0065] (4) Preparation of temperature-adaptive fabric: Design the pattern on the computer software SolidWorks, and cut the fabric according to the design using a laser cutter (laser intensity 100W) to obtain the temperature-adaptive fabric.

[0066] Figure 3 Figure a is a scanning electron microscope image of MXene nanosheets in Example 1. As can be seen from Figure a, the MXene used in this invention is a two-dimensional nanosheet structure with a sheet size of several hundred nanometers.

[0067] Figure 3 Figure b is a scanning electron microscope image of the PPy@MXene nanomaterial in Example 1. As can be seen from Figure b, the polypyrrole polymerized under the action of MXene nanosheets is in the form of nanoparticles, mainly distributed at the edges and defects of the MXene sheets.

[0068] Figure 4 A photograph of the temperature-adaptive fabric prepared in Example 1.

[0069] Figure 5 The images show the microstructure of the temperature-adaptive fabric prepared in Example 1, where a and a' are microstructures of the polyamide fiber fabric, and b and b' are microstructures of the fabric containing the PPy@MXene nanophotothermal material coating. From a and a', it can be seen that the fibers obtained by electrospinning are interwoven, and the fiber surface is smooth and glossy; from b and b', it can be seen that the coating forms a continuous thin film on the fabric surface.

[0070] Application Example 1

[0071] The temperature-adaptive fabric prepared in Example 1 was attached to a chamber with one open side, and water-containing air was uniformly introduced into the chamber. The temperature-adaptive fabric was in the following state before the moisture was released: Figure 6 As shown in 'a'. After 30 seconds of moisture introduction, the temperature-adaptive fabric state is as follows. Figure 6 As shown in b, the temperature-adaptive fabric deforms after absorbing moisture, causing the patterned areas to curl away from PA, thus allowing moisture to escape from the chamber promptly. The relative humidity change inside the chamber after moisture begins to enter is shown in the figure. Figure 7 As shown in the diagram, the relative humidity inside the chamber gradually increases as moisture is introduced, then reaches equilibrium (approximately 60%). When this system is placed under a solar simulator, and the simulator is turned on for 180 seconds and then off, the temperature adapts to the fabric's temperature changes as shown in the diagram. Figure 8 As shown in the figure. It can be seen that under low light conditions (20mW / cm²), 2 The fabric temperature is approximately 30°C, which is 10°C higher than room temperature, indicating that the temperature-adaptive fabric prepared in Example 1 of this invention can provide good heating for the human body in places with insufficient sunlight; and in places with sunlight intensity of 100mW / cm². 2 At that time, the fabric temperature reached about 55℃.

[0072] Application Example 2

[0073] The temperature-adaptive fabric prepared in Example 1 was attached to the back of a T-shirt worn by a volunteer, such as... Figure 9 As shown. It can be seen that during outdoor activities, the temperature-adaptive fabric is initially flat ( Figure 9 (a) After volunteers have been exercising for a period of time and have started to sweat, the temperature-adaptive fabric's open pattern curls, thereby opening channels for rapid sweat evaporation and cooling the body. Figure 9 (b) When the human body stops moving and its body temperature drops, the bent fabric returns to its original shape. Figure 9 (c)

[0074] Example 2

[0075] Same as Example 1, except that in step (1) the polyamide fiber fabric (PA6) preparation process, spinning for 6 hours to obtain a polyamide fiber fabric with a thickness of 100μm, PPy@MXene / PA coated fabric is obtained through steps (2)-(3), and temperature adaptive fabric is obtained through step (4).

[0076] Example 3

[0077] Same as Example 1, except that in step (1) the polyamide fiber fabric (PA6) preparation process, spinning for 10 hours to obtain a polyamide fiber fabric with a thickness of 240μm, PPy@MXene / PA coated fabric is obtained through steps (2)-(3), and temperature adaptive fabric is obtained through step (4).

[0078] Application Example 3

[0079] The PPy@MXene / PA coated fabrics prepared in Examples 1-3 were attached to a chamber with one open side, and water-containing air was uniformly introduced into the chamber. The changes in bending angle of the PPy@MXene / PA coated fabrics of different thicknesses prepared in Examples 1-3 during the opening and closing of the humid airflow are shown in the figure. Figure 10 As shown in the figure, it can be seen that with the increase of fabric thickness, both the maximum bending angle and the recovery speed decrease. The relative humidity change of the PPy@MXene / PA coated fabric prepared in Example 1 inside the chamber after the initial introduction of moisture is shown in the figure. Figure 11 As shown in the figure, the relative humidity inside the chamber increases as moisture is introduced, then gradually reaches equilibrium at approximately 73%. When this system is placed under a solar simulator, the temperature change of the PPy@MXene / PA coated fabric is as follows... Figure 12 As shown, under weak light conditions, the temperature performance of the PPy@MXene / PA coated fabric is comparable to that of the temperature-adaptive fabric under the same conditions; at a sunlight intensity of 100 mW / cm², the temperature performance is similar. 2 At that time, the PPy@MXene / PA coated fabric reached approximately 70.5°C. Therefore, compared to the temperature-adaptive fabric, the temperature-adaptive fabric in Example 1 exhibits reduced heating under strong light conditions, indicating that the temperature-adaptive fabric prepared in Example 1 possesses automatic temperature regulation capabilities.

[0080] Example 4

[0081] A method for preparing a coated fabric includes the following steps:

[0082] (1) Preparation of MXene nanosheet dispersion: 2g of lithium fluoride powder was slowly added to 9mol / L concentrated hydrochloric acid (40mL) and stirred at room temperature for 30 minutes. Then, 2g of Ti3AlC2 was slowly added and stirred at 35℃ for 48 hours. The resulting dispersion was then centrifuged and washed with a large amount of water until its pH value was 6. The obtained MXene was redispersed in water and ultrasonicated for 1h using an ultrasonic cleaner with a power of 100W to obtain an MXene nanosheet dispersion with a concentration of 20mg / mL.

[0083] (2) Using commercially available woven polyamide fabric, a 20 mg / mL MXene dispersion was applied to one side of the fabric by brushing until the coating content on the surface of the commercially available woven polyamide fabric reached 2 mg / cm². 2 The coated fabric is dried in an oven at 50°C.

[0084] Figure 13 The image shows a scanning electron microscope (SEM) image of the coated fabric prepared in Example 4, where a shows that the coated fabric consists of a woven fabric substrate, and b shows that the MXene coating is tightly wrapped around the fiber surface.

[0085] Application Example 4

[0086] The coated fabric prepared in Example 4 was attached to a chamber with one open side. Water-containing air was uniformly introduced into the chamber, and it was placed under a solar simulator. The simulator was turned on for 180 seconds and then turned off. The temperature change of the coated fabric was as follows: Figure 14 As shown, the fabric temperature increases with increasing light intensity; at a light intensity of 150 mW / cm², the temperature of the fabric increases further. 2 At that time, the fabric temperature rose to 50℃.

[0087] Example 5

[0088] A method for preparing a temperature-adaptive fabric specifically includes the following steps:

[0089] (1) Preparation of polyamide fiber fabric (PA6): Polyamide powder was added to a mixed solution of formic acid and acetic acid (the mass ratio of formic acid and acetic acid was 1:1) and stirred thoroughly for 12 h to obtain a polyamide solution with a concentration of 15 wt%. The obtained polyamide solution was placed on an electrospinning injection pump for electrospinning. The electrospinning conditions were: the syringe advance speed was 0.5 mL / h, the distance between the needle tip and the receiving roller was 20 cm, the speed of the receiving roller was 200 rpm, and the voltage was 22 kV. After spinning for 8 h, the polyamide fiber fabric was removed from the receiving roller to obtain a polyamide fiber fabric with a thickness of 160 μm.

[0090] (2) Preparation of MXene nanophotothermal materials:

[0091] 2g of lithium fluoride powder was slowly added to 40mL of 9mol / L concentrated hydrochloric acid and stirred at room temperature for 30 minutes. Then, 2g of Ti3AlC2 was slowly added and stirred at 35°C for 48 hours. The resulting dispersion was then centrifuged and washed with a large amount of water until its pH value was 6. The resulting MXene was redispersed in water and ultrasonicated for 1 hour using an ultrasonic cleaner with a power of 100W to obtain an MXene nanosheet dispersion with a concentration of 5mg / mL.

[0092] (3) Preparation of MXene / PA coated fabric: The MXene nanophotothermal material dispersion was brushed onto one side of a polyamide fiber fabric (PA6) and dried in an oven at 60°C. The brushing and drying steps were repeated multiple times until the coating content on the surface of the polyamide fiber fabric reached 1 mg / cm³. 2 An MXene / PA coated fabric was obtained (one side of the MXene / PA coated fabric is a polyamide fiber fabric, and the other side is a coating containing MXene nanophotothermal material);

[0093] (4) Preparation of temperature-adaptive fabric: Design the pattern on the computer software SolidWorks, and cut the fabric according to the design using a laser cutter (laser intensity 100W) to obtain the temperature-adaptive fabric.

[0094] Application Example 5

[0095] The MXene / PA coated fabric prepared in Example 5 was attached to a chamber with one open side, and water-containing air was uniformly introduced into the chamber. The system was placed under a solar simulator, which was turned on for 180 seconds and then off. The temperature change of the fabric during the opening and closing of the solar simulator was recorded. Figure 15 As shown. From Figure 15 It can be seen that the fabric temperature rises to 64.6℃. In comparison, the PPy@MXene / PA prepared in Example 1 has better photothermal performance, reaching 70.5℃.

[0096] Example 6

[0097] Same as Example 1, except that in step (3), the content of the polyamide fiber fabric surface coating reaches 2 mg / cm³. 2 3mg / cm 2 6mg / cm 2 .

[0098] Application Example 6

[0099] The three groups of different PPy@MXene / PA coated fabrics prepared in Example 6 were subjected to performance tests. Specifically, fabrics with different coating qualities were placed under a solar simulator. The simulator was turned on for 180 seconds and then turned off, and the temperature changes of the fabrics during the switching on and off of the simulator were recorded. The results are as follows: Figure 16 As shown in the figure, the photothermal properties of fabrics with different coating amounts do not change significantly with increasing coating quality; this indicates that PPy@MXene has excellent photothermal conversion capabilities at 1 mg / cm³. 2 At a certain content, it can achieve good heating performance for fabrics.

[0100] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for preparing a temperature-adaptive fabric, characterized in that, The process includes the following steps: using a polyamide fiber fabric as a substrate, coating a photothermal material onto any side of the substrate, drying it, and then cutting an opening pattern on the resulting sample to obtain a temperature-adaptive fabric; the pattern is connected to the substrate at least at one point; The temperature-adaptive fabric includes a polyamide fiber fabric and a photothermal material coating applied to the polyamide fiber fabric, and has an open pattern on the temperature-adaptive fabric; the thickness of the polyamide fiber fabric is 50-1000 μm; The coating amount of the photothermal material is 1 mg / cm³. 2 ; The photothermal material is PPy@MXene; The preparation of the polyamide fiber fabric specifically includes the following steps: adding polyamide powder to a mixed solution of formic acid and acetic acid to obtain a polyamide solution; preparing the polyamide solution into a polyamide fiber fabric by electrospinning technology; the mixed solution is composed of formic acid and acetic acid mixed in a mass ratio of 1:

1.

2. The preparation method according to claim 1, characterized in that, The coating method is at least one of screen printing, brushing, and spraying.

3. The preparation method according to claim 1, characterized in that, The pattern is created using laser cutting.

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