Temperature self-adaptive fabric as well as preparation method and application thereof

Abstract

The invention discloses a temperature self-adaptive fabric as well as a preparation method and application thereof, and belongs to the technical field of thermal management fabrics. A polyamide fiber fabric is used as a matrix, any side of the matrix is coated with a photo-thermal material coating and dried, then an opening pattern is cut on an obtained sample, and the temperature self-adaptive fabric is obtained. The application range of the temperature self-adaptive fabric is not limited to outdoor environments, and the temperature self-adaptive fabric can also be applied to the fields of intelligent clothing manufacturing and the like to help people to realize intelligent regulation and control of body temperature.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management fabrics, and in particular relates to a temperature-adaptive fabric and a preparation method and application thereof. Background Art

[0002] Thermal comfort is directly related to human health and safety and is an important issue in daily life. In indoor environments, temperature can be regulated by various cooling / heating tools (such as heating, ventilation, air conditioning, etc.). At the same time, people also need to spend a lot of time outdoors for essential activities. Relatively speaking, due to unpredictable weather and huge open spaces, the outdoor environment lacks a universal thermal management method. The outdoor temperature can vary by up to 20°C in a day, which is beyond the human body's self-regulation ability, so outdoor thermal management strategies are particularly important.

[0003] Personal thermal management is a temperature regulation technology for individual parts. It has attracted more and more attention due to its advantages such as energy saving, high cost performance and personalized design. Fabric, as the second skin of the human body, plays a vital role in protecting and regulating the temperature of the human body and is suitable for the field of human thermal management. People have carried out extensive research in the field of personal thermal management fabrics and developed a series of temperature control methods, including photothermal heating, Joule heating, radiation heating / cooling, heating / cooling based on phase change materials, etc. Among them, dual-mode thermal management fabrics have outstanding advantages because they can integrate cooling and heating functions on both sides of a piece of fabric. However, the thermal regulation characteristics of most thermal management fabrics reported so far are static after the material is made, and it is difficult to adapt to the needs of body temperature regulation caused by frequent changes in ambient temperature. In order to solve this problem, an adaptive thermal management fabric that can automatically switch between cold / hot modes according to changes in ambient temperature and has zero energy input is of great significance and urgent need. Summary of the invention

[0004] In view of the above technical problems, the present invention proposes a temperature-adaptive fabric and a preparation method and application thereof. The temperature-adaptive fabric can automatically adjust the body temperature according to the change of ambient temperature.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] One of the purposes of the present invention is to provide a temperature-adaptive fabric, which comprises a polyamide fiber fabric and a photothermal material coating applied on the polyamide fiber fabric, and an opening pattern is provided on the temperature-adaptive fabric.

[0007] In an outdoor low-temperature lighting environment, the temperature-adaptive fabric provided by the present invention absorbs solar energy and converts it into heat energy, thereby heating the human body; when the temperature rises, the evaporation of sweat causes the polyamide fiber fabric to absorb moisture and expand, thereby causing the photothermal material coating to deform and the fabric opening pattern to bend to the side away from the human body, thereby causing the sweat to evaporate, thereby taking away the heat and lowering the body temperature, thereby achieving the purpose of automatic temperature control.

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

[0009] Furthermore, the polyamide fiber fabric is processed by one of weaving, knitting and non-woven fabric processes.

[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 object of the present 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 coating on either side of the substrate, drying, and then cutting an opening pattern on the obtained sample to obtain a temperature-adaptive fabric.

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

[0013] Furthermore, the pattern is cut by laser cutting, and the pattern is connected to the substrate at least at one point.

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

[0015] A third object of the present invention is to provide an application of temperature-adaptive fabric in the manufacture of smart clothing.

[0016] A fourth object of the present invention is to provide an application of temperature-adaptive fabric in the manufacture of outdoor materials.

[0017] The working mode of the temperature-adaptive fabric provided by the present invention will change according to environmental changes, thereby realizing intelligent regulation of human body temperature.

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

[0019] The present invention realizes the intelligent temperature regulation function of the fabric by setting a photothermal material coating and an opening pattern. In a low-temperature lighting environment, the photothermal material coating can absorb solar energy and convert it into thermal energy, provide heat for the human body, and achieve the purpose of warming up. In a high-temperature environment, the human body produces sweat and evaporates, the polyamide fabric absorbs moisture and expands, and the volume change of the coating is not obvious, which causes it to deform, and then the opening pattern bends to the side away from the human body, which can promote the evaporation of sweat and enhance heat convection, thereby achieving the purpose of cooling. This temperature adaptive function can automatically adjust according to changes in the environment, making the use of the fabric more flexible.

[0020] The application scope of the present invention is not limited to outdoor environments, but can also be applied to fields such as smart clothing manufacturing to help people achieve intelligent regulation of body temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

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

[0023] Figure 2 The present invention is a flow chart of the preparation of the temperature adaptive fabric;

[0024] Figure 3 a in the figure is a scanning electron microscope image of the MXene nanosheet in Example 1. Figure 3 b is the scanning electron microscope image of the PPy@MXene nanomaterial in Example 1;

[0025] Figure 4 This is a real photo of the temperature adaptive fabric prepared in Example 1;

[0026] Figure 5 The microscopic morphology of the temperature-adaptive fabric prepared in Example 1, wherein a and a' are microscopic morphology of polyamide fiber fabrics, and b and b' are microscopic morphology of coatings containing PPy@MXene nanophotothermal materials;

[0027] Figure 6 a in the figure is the state of the temperature-adaptive fabric prepared in Example 1 on the cabin body before moisture is opened, Figure 6 b in the figure is the state of the temperature-adaptive fabric prepared in Example 1 on the cabin after moisture is introduced for 30 seconds;

[0028] Figure 7 The relative humidity changes in the cabin to which the temperature-adaptive fabric prepared in Example 1 is attached after moisture begins to flow into the cabin;

[0029] Figure 8 The temperature change of the temperature-adaptive fabric prepared in Example 1 under the solar simulator;

[0030] Fig. 9 This is a schematic diagram of the temperature-adaptive fabric prepared in Example 1 attached to the back of a T-shirt worn by a volunteer;

[0031] Fig.10 The graph showing the change in bending angle of PPy@MXene / PA coated fabrics of different thicknesses prepared in Examples 1-3 during the process of turning on and off the moisture airflow;

[0032] Fig.11 This is a graph showing the change in relative humidity of the PPy@MXene / PA coated fabric prepared in Example 1 in the cabin after moisture begins to flow in;

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

[0034] Fig.13 This is a scanning electron microscope image of the coated fabric prepared in Example 4, wherein a is 500 μm and b is 10 μm;

[0035] Fig.14 It is a temperature variation diagram of the coated fabric prepared in Example 4 under the solar simulator;

[0036] Fig.15 It is a temperature variation diagram of the coated fabric prepared in Example 5 under a solar simulator;

[0037] Fig.16 This is a temperature change diagram of the coated fabric prepared in Example 6 under a solar simulator. DETAILED DESCRIPTION

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

[0039] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0040] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0041] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present invention description and examples are exemplary only.

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

[0043] The present invention provides a temperature-adaptive fabric, one side of the temperature-adaptive fabric is a polyamide fiber fabric, the other side is a photothermal material coating, and an opening pattern is provided on the temperature-adaptive fabric. The thickness of the polyamide fiber fabric is 50-1000 μm. The schematic diagram of its working principle is as follows Figure 1 As shown. In an outdoor low-temperature light environment, the photothermal material coating absorbs solar energy and converts it into heat energy, thereby heating the human body; when the temperature rises, the evaporation of sweat causes the polyamide fiber fabric to absorb moisture and expand, while the volume of the coating does not change much, causing the fabric opening pattern to bend away from the human body, thereby evaporating sweat and taking away heat to reduce body temperature. The working mode of the temperature-adaptive fabric will change according to environmental changes, thereby realizing intelligent regulation of human body temperature.

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

[0045] A polyamide fiber fabric is used as a substrate, a photothermal material coating is coated on any side of the substrate, dried, and then an opening pattern is cut on the obtained sample to obtain a temperature-adaptive fabric.

[0046] In some embodiments, the polyamide fiber fabric can be processed by one of weaving, knitting and non-woven fabric processes, and the purpose of multiple selections is to cope with different environmental conditions. Exemplarily, in the following embodiments of the present invention, polyamide fiber fabric (PA6) can be prepared by electrostatic spinning technology, specifically comprising the following steps: adding polyamide powder to a mixed solution of formic acid and acetic acid (the mass ratio of formic acid and acetic acid is 1:1) to obtain a polyamide solution; preparing the polyamide solution into polyamide fiber fabric by electrostatic spinning technology; wherein the conditions for electrostatic spinning are: the syringe propulsion speed is 0.5mL / h, the distance between the needle tip and the receiving roller is maintained at 20cm, the speed of the receiving roller is 200rpm, the voltage is 22kV, and the spinning time is 8h. As another example, the polyamide fiber fabric can also be selected from fabrics prepared by a weaving process.

[0047] In some embodiments, the photothermal effect nanomaterial contained in the photothermal material coating can 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. The purpose of multiple selections is to cope with different environmental conditions. The photothermal material coating is a composite coating of polymers 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 can be selected from MXene or PPy@MXene.

[0048] Exemplarily, in the following embodiments of the present invention, the photothermal material coating can select polypyrrole (PPy) @MXene photothermal material, which specifically includes the following steps: dispersing MXene nanosheets in deionized water to obtain a MXene dispersion, then adding pyrrole (Py) monomer, stirring, centrifuging, washing, and re-dispersing the obtained PPy @MXene nanomaterial in deionized water. The MXene nanosheet is homemade and in a single-layer state. Compared with the multi-layer MXene nanosheets purchased on the market, the single-layer MXene nanosheet provided by the present invention has better performance. The photothermal performance of the synthesized PPy @ MXene composite material is improved compared to the photothermal performance of pure MXene.

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

[0050] In some embodiments, the pattern is cut by laser cutting, and the pattern is connected to the substrate at least at one point. The specific operation is: design the pattern on the computer software solidworks, and use a laser cutting machine (laser intensity 100W) to cut according to the designed pattern.

[0051] In some embodiments, the coating and drying process may be repeated multiple times until the coating amount of the photothermal material on the surface of the polyamide fiber fabric is 1-6 mg / cm 2 For example, in the following embodiments of the present invention, the coating amount can be selected as 1 mg / cm 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 prepared temperature-adaptive fabric can be used in the manufacture of smart clothing or outdoor materials.

[0053] Unless otherwise specified, the "room temperature" in the present invention refers to 20±2°C.

[0054] The raw materials used in the present invention are all purchased from the market.

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

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

[0057] Figure 2 The present invention is a flow chart for preparing the temperature-adaptive fabric.

[0058] Example 1

[0059] A method for preparing a temperature-adaptive fabric, the preparation flow chart is shown in Figure 2 , specifically including 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 to acetic acid was 1:1) and stirred for 12 h to obtain a polyamide solution with a concentration of 15 wt %; the obtained polyamide solution was placed on an electrospinning syringe pump for electrospinning, and the electrospinning conditions were as follows: the syringe propulsion speed was 0.5 mL / h, the distance between the needle tip and the receiving roller was maintained at 20 cm, the speed of the receiving roller was 200 rpm, the voltage was 22 kV, and 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: 2 g of lithium fluoride powder was slowly added to 9 mol / L concentrated hydrochloric acid (40 mL) and stirred at room temperature for 30 minutes, then 2 g of Ti3AlC2 was slowly added and stirred at 35°C for 48 hours; the obtained 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 1 hour using an ultrasonic cleaner with a power of 100 W to obtain a MXene nanosheet dispersion with a concentration of 5 mg / mL;

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

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

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

[0066] Figure 3 a in the figure is a scanning electron microscope image of the MXene nanosheet in Example 1. As can be seen from Figure a, the MXene used in the present 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. It can be seen from Figure b that the polypyrrole polymerized under the action of the MXene nanosheets is in the form of nanoparticles, which are mainly distributed at the edges and defects of the MXene sheets.

[0068] Figure 4 This is a real photo of the temperature adaptive fabric prepared in Example 1.

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

[0070] Application Example 1

[0071] The temperature-adaptive fabric prepared in Example 1 is attached to a cabin with one side open, and air containing water is uniformly input into the cabin. The state of the temperature-adaptive fabric before the moisture is opened is as follows: Figure 6 As shown in a in the figure. After the moisture is introduced for 30 seconds, the state of the temperature adaptive fabric is as follows Figure 6 As shown in b in the figure, it can be seen that the temperature-adaptive fabric deforms after absorbing moisture, causing the patterned part of the temperature-adaptive fabric to curl toward the side away from the PA, so that moisture can be discharged from the cabin in time. The relative humidity changes in the cabin after moisture begins to enter are shown in Figure 7 As shown in the figure, the relative humidity in the cabin gradually increases with the introduction of moisture, and then reaches equilibrium (about 60%). The system is placed under a solar simulator, and the simulator is turned on for 180 seconds and then turned off. The temperature change of the temperature-adaptive fabric is shown in the figure below. Figure 8 As shown. It can be seen that under weak light (20mW / cm 2 ), the fabric temperature is about 30°C, which is 10°C higher than the room temperature, indicating that the temperature-adaptive fabric prepared in Example 1 of the present invention can achieve good heating for the human body in places where sunlight is insufficient; when the sunlight intensity is 100mW / cm 2 When the fabric temperature reaches 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. Fig. 9 As shown. It can be seen that during outdoor activities, the temperature adaptive fabric is initially flat ( Fig. 9 a); After the volunteers began to sweat after exercising for a while, the opening pattern of the temperature-adaptive fabric curled up, thus opening a channel for the rapid evaporation of sweat and cooling the body ( Fig. 9 b); when the human body stops moving and the body temperature drops, the bent fabric returns to its original shape ( Fig. 9 c) in.

[0074] Example 2

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

[0076] Example 3

[0077] The same as Example 1, except that, in the preparation process of the polyamide fiber fabric (PA6) in step (1), spinning is performed for 10 hours to obtain a polyamide fiber fabric with a thickness of 240 μm, and the PPy@MXene / PA coated fabric is obtained through steps (2) to (3), and the 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 cabin with one side open, and air containing water was uniformly introduced into the cabin. The changes in the bending angles of the PPy@MXene / PA coated fabrics of different thicknesses prepared in Examples 1-3 during the process of turning the humid air flow on and off are shown in Figure 2. Fig.10 As shown in the figure, it can be seen that as the thickness of the fabric increases, the maximum bending angle and the recovery speed both decrease. The relative humidity of the PPy@MXene / PA coated fabric prepared in Example 1 changes in the cabin after the moisture begins to flow in. Fig.11 As shown. It can be seen that the relative humidity in the cabin rises as the moisture enters, and then gradually reaches equilibrium, with a humidity of about 73%. The system is placed under a solar simulator, and the temperature change of the PPy@MXene / PA coated fabric is shown in Fig.12 As shown in the figure, it can be seen that under weak light, the temperature of the PPy@MXene / PA coated fabric is comparable to that of the temperature adaptive fabric under the same conditions; when the sunlight intensity is 100mW / cm 2 When the temperature of the PPy@MXene / PA coated fabric reaches about 70.5°C, it can be seen that compared with the temperature adaptive fabric, the heating effect of the PPy@MXene / PA coated fabric in Example 1 is weakened under strong light conditions, indicating that the temperature adaptive fabric prepared in Example 1 has the ability to automatically adjust the temperature.

[0080] Example 4

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

[0082] (1) Preparation of MXene nanosheet dispersion: 2 g of lithium fluoride powder was slowly added to 9 mol / L concentrated hydrochloric acid (40 mL) and stirred at room temperature for 30 minutes, followed by slow addition of 2 g of Ti3AlC2 and stirring 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 100 W to obtain a MXene nanosheet dispersion with a concentration of 20 mg / mL;

[0083] (2) Commercial woven polyamide fabric was selected and 20 mg / mL MXene dispersion was applied to one side of the polyamide fabric by brushing until the surface coating content of the commercial woven polyamide fabric reached 2 mg / cm 2 , and dried in an oven at 50°C to obtain a coated fabric.

[0084] Fig.13 This is a scanning electron microscope image of the coated fabric prepared in Example 4, where a shows that the coated fabric is composed of a woven fabric substrate, and b shows that the MXene coating is tightly wrapped on the fiber surface.

[0085] Application Example 4

[0086] The coated fabric prepared in Example 4 was attached to a cabin with an open side, and air containing water was uniformly introduced into the cabin. The cabin 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: Fig.14 As shown in Figure 2, it can be seen that the temperature of the fabric increases with the increase of light intensity; when the light intensity is 150mW / cm 2 When the fabric temperature rises to 50℃.

[0087] Example 5

[0088] A method for preparing a temperature-adaptive fabric comprises 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 to acetic acid was 1:1) and stirred for 12 h to obtain a polyamide solution with a concentration of 15 wt %; the obtained polyamide solution was placed on an electrospinning syringe pump for electrospinning, and the electrospinning conditions were as follows: the syringe propulsion speed was 0.5 mL / h, the distance between the needle tip and the receiving roller was maintained at 20 cm, the speed of the receiving roller was 200 rpm, the voltage was 22 kV, and 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] 2 g of lithium fluoride powder was slowly added to 9 mol / L concentrated hydrochloric acid (40 mL) and stirred at room temperature for 30 minutes, and then 2 g 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 obtained MXene was redispersed in water and ultrasonicated for 1 hour using an ultrasonic cleaner with a power of 100 W to obtain a MXene nanosheet dispersion with a concentration of 5 mg / mL;

[0092] (3) Preparation of MXene / PA coated fabric: The MXene nano-photothermal material dispersion was applied to one side of the polyamide fiber fabric (PA6) by brushing and dried in an oven at 60 °C. The brushing and drying steps were repeated several times until the coating content on the surface of the polyamide fiber fabric reached 1 mg / cm 2 , obtaining a MXene / PA coated fabric (one side of the MXene / PA coated fabric is a polyamide fiber fabric, and the other side is a coating containing a MXene nano-photothermal material);

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

[0094] Application Example 5

[0095] The MXene / PA coated fabric prepared in Example 5 was attached to a cabin with one side open, and air containing water was uniformly introduced into the cabin. The system was placed under a solar simulator, and the simulator was turned on for 180 seconds and then turned off. The temperature change of the fabric during the process of turning the solar simulator on and off was recorded, as shown in FIG. Fig.15 As shown. Fig.15 It can be seen that the temperature of the fabric rises to 64.6°C. In comparison, the photothermal performance of PPy@MXene / PA prepared in Example 1 is better and can reach 70.5°C.

[0096] Example 6

[0097] Same as Example 1, except that the content of the polyamide fiber fabric surface coating in step (3) reaches 2 mg / cm 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 tested for performance. The specific test method was: the 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 change of the fabrics during the process of turning the solar simulator on and off was recorded. The results are shown in Figure 2. Fig.16 As shown in the figure, it can be seen that with the increase of coating mass, the photothermal properties of fabrics with different coating amounts do not change much, indicating that PPy@MXene has excellent photothermal conversion ability. 2 Good heating performance can be achieved on the fabric at a content of

[0100] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A temperature adaptive fabric, characterized in that: The temperature self-adapting fabric comprises a polyamide fiber fabric and a photothermal material coating coated on the polyamide fiber fabric, and an opening pattern is arranged on the temperature self-adapting fabric.

2. The temperature adaptive fabric according to claim 1, characterized in that: The thickness of the polyamide fiber fabric is 50-1000 μm.

3. The temperature adaptive fabric according to claim 1, characterized in that: The polyamide fiber fabric is processed by one of weaving, knitting and non-woven fabric processes.

4. The temperature adaptive fabric according to claim 1, characterized in that: 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.

5. A method for preparing the temperature adaptive fabric according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: taking polyamide fiber fabric as a substrate, coating a photothermal material coating on any side of the substrate, drying, and then cutting an opening pattern on the obtained sample to obtain a temperature-adaptive fabric.

6. The method for preparing the temperature adaptive fabric according to claim 5, characterized in that: The coating method is at least one of screen printing, brushing and spraying.

7. The method for preparing the temperature adaptive fabric according to claim 5, characterized in that: The pattern is cut by laser cutting, and the pattern is connected to the substrate at least at one point.

8. The method for preparing the temperature adaptive fabric according to claim 5, characterized in that: The coating amount of the photothermal material coating is 1-6 mg / cm 2 .

9. Application of the temperature adaptive fabric according to any one of claims 1 to 4 in the manufacture of smart clothing.

10. Use of the temperature-adaptive fabric according to any one of claims 1 to 4 in the manufacture of outdoor materials.

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