A composite thermal storage fabric made of volcanic rock, aerogel, and graphene and its preparation method

Abstract

This invention relates to a composite thermal storage fabric made of volcanic rock, aerogel, and graphene, and its preparation method. The fabric comprises an inner layer, a composite middle layer, and an outer layer arranged sequentially. The composite middle layer includes a first support layer and a second support layer, both of which consist of alternating concave and convex portions. A plurality of wrapping elements are symmetrically arranged on the inner walls of the concave portions of both the first and second support layers. This invention, by forming a composite aerogel layer between the support strips and providing wrapping elements that encircle the support strips and the composite aerogel layer, and with vertical support elements providing support for the wrapping elements, achieves a more stable composite middle layer structure through the coordinated use of the support strips, composite aerogel layer, wrapping elements, and vertical support elements. This results in a longer-lasting moisture absorption and heat generation performance of the composite thermal storage fabric, improved washability, and significantly enhanced tear resistance and down-proof properties.

Description

Technical Field

[0001] This invention belongs to the field of clothing fabric technology, specifically relating to a composite heat-storing fabric of volcanic rock, aerogel, and graphene and its preparation method. Background Technology

[0002] Polyvinyl alcohol (PVA) is one of the raw materials for aerogel fabrics. In the preparation of aerogels, PVA is often used as a base material, combined with other materials such as volcanic rock nanoparticles and graphene oxide to form aerogel fibers / fabrics with good heat storage and insulation effects. However, the mechanical properties, stability, and tear resistance of the composite layer of volcanic rock nanoparticles, aerogel, and graphene oxide prepared by electrospinning technology in the prior art are poor, which cannot meet the requirements of down jacket fabrics. After repeated washing, it is prone to deformation, breakage, and shedding, resulting in a significant decrease in the heat storage and insulation effect of the fabric. In addition, down jacket fabrics also require good down-proof effect to avoid or reduce down leakage. Therefore, we provide a volcanic rock, aerogel, and graphene composite heat storage fabric and its preparation method to solve the above technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide a composite thermal storage fabric of volcanic rock, aerogel, and graphene, and its preparation method, in order to solve the above-mentioned problems.

[0004] The present invention achieves the above objectives through the following technical solutions:

[0005] A composite thermal storage fabric made of volcanic rock, aerogel, and graphene includes an inner layer, a composite middle layer, and an outer layer arranged sequentially.

[0006] The composite middle layer includes a support layer one and a support layer two respectively disposed on opposite sides of the inner layer and the outer layer. The support layer one and the support layer two are alternating concave and convex portions, and the concave and convex portions of the support layer one and the support layer two correspond to each other. Several wrapping elements are symmetrically arranged on the inner wall of the concave portion of the support layer one and the support layer two. Several support strips are arranged between the symmetrical wrapping elements, and a composite aerogel layer is formed between the support strips.

[0007] The package consists of two continuously connected sides. The support strips on the first and second support layers and the four package sides near the support strips are hot-pressed into a centrally contracted shape. The package side near the support strips wraps around the support strips and the composite aerogel layer in a ring shape. The other side of the package is located between the corresponding protrusions of the first and second support layers and is fixed together by hot pressing.

[0008] As a further optimization of the present invention, a vertical support member for supporting the package is provided between the upper and lower corresponding package components.

[0009] As a further optimization of the present invention, the middle part of the vertical support is hollow, the outer wall of the vertical support fits against the side of the package, and the two sides of the vertical support extend outward to form a pressing part.

[0010] As a further optimization of the present invention, the first support layer, the second support layer, the support strip, the wrapping component, and the vertical support component are all made of polyamide or polypropylene material, and the composite aerogel layer is made of volcanic rock nanoparticles, graphene oxide, and PVA material.

[0011] A method for preparing a composite thermal storage fabric of volcanic rock, aerogel, and graphene, comprising the following steps:

[0012] Step 1: Support layer 1 and support layer 2 are integrally extruded on the inner and outer layers using a mold. Support layer 1 and support layer 2 are alternating concave and convex parts. Several wrapping parts and several support strips are integrally extruded from the concave parts of support layer 1 and support layer 2 using a mold.

[0013] Step 2: An aerogel spinning solution containing volcanic rock nanoparticles and graphene oxide is electrospinned to form a composite aerogel layer between the inner and outer support strips.

[0014] Step 3: Place the inner and outer support layers 1 and 2 on top of each other, with the concave and convex parts of support layer 1 and support layer 2 corresponding to each other. A cavity is formed between the concave parts of support layer 1 and support layer 2, and the wrapping parts of support layer 1 and support layer 2 correspond to each other. Heat-press the side of the wrapping part near the support strip to the support strip of support layer 1 and support layer 2 to form a central shrinkage shape.

[0015] Step 4: Hot-press the protrusions of support layer 1 and support layer 2, as well as the inner layer, composite middle layer, and outer layer at both ends of the cavity together to obtain the composite heat storage fabric.

[0016] As a further optimization of the present invention, in step one, a vertical support member is extruded by integral molding through a mold. The vertical support member is hollow in the middle and extends on both sides to form a pressing part.

[0017] In step three, the vertical support is placed between the upper and lower corresponding wrapping parts, so that the outer wall of the vertical support fits against the side of the wrapping part. Then, the pressing part on one side of the vertical support and the side of the wrapping part near the support strip are hot-pressed together with the support strips of support layer one and support layer two to form a central shrinkage shape.

[0018] As a further optimization of the present invention, in step three, the hot pressing temperature is 105-115℃, the hot pressing pressure is 2-4MPa, the number of hot pressing cycles is 2-4, and the hot pressing time for each cycle is 4-7min.

[0019] As a further optimization of the present invention, in step four, the hot pressing temperature is 155-170℃, the hot pressing pressure is 5-8MPa, the number of hot pressing cycles is 3-5, and the hot pressing time for each cycle is 3-6min.

[0020] The beneficial effects of this invention are as follows:

[0021] 1) This invention forms a composite aerogel layer between support strips and provides a wrapping component that wraps around the support strips and composite aerogel layer. The vertical support component supports the wrapping component. The cooperation between the support strips, composite aerogel layer, wrapping component and vertical support component can make the entire composite middle layer structure more stable, thereby making the moisture absorption and heat generation performance of the composite heat storage fabric more durable, water-resistant, and significantly improving the tear resistance and down-proof performance of the composite heat storage fabric.

[0022] 2) The present invention enables the composite aerogel layer to adhere to the support strip, thereby increasing the stability of the composite aerogel layer. The upper and lower corresponding wrapping parts are wrapped around the support strip and the composite aerogel layer in a ring shape after being hot-pressed, which can play a certain protective role for the support strip and the composite aerogel layer, thereby further increasing the stability of the composite aerogel layer. The vertical support can support the wrapping parts, which is to improve the stability of the structure in which the wrapping parts are wrapped around the support strip and the composite aerogel layer, thereby further increasing the stability of the composite aerogel layer. Ultimately, the moisture absorption and heat generation performance of the composite heat storage fabric is maintained for a longer period of time, and the tear resistance and down-proof performance of the composite heat storage fabric are also improved.

[0023] 3) The present invention forms a cavity between the recesses of support layer one and support layer two. The cavity is divided into several spaces of different sizes by support strips, composite aerogel layer, wrapping component and vertical support component, making it difficult for down to come out, which can further improve the down-proof effect of composite heat storage fabric. Attached Figure Description

[0024] Figure 1 This is a cross-sectional schematic diagram of the composite heat-retaining fabric of the present invention.

[0025] Figure 2 This is a cross-sectional schematic diagram of the composite middle layer of the present invention.

[0026] Figure 3 This is a cross-sectional schematic diagram of the packaging component and the vertical support component of the present invention.

[0027] Figure 4 This is a cross-sectional schematic diagram of the package of the present invention.

[0028] Figure 5 This is a cross-sectional schematic diagram of the vertical support member of the present invention.

[0029] Figure 6 This is a cross-sectional schematic diagram of the composite middle layer of the composite heat-retaining fabric of Comparative Example 1 of the present invention.

[0030] Figure 7 This is a cross-sectional schematic diagram of the composite middle layer of the composite heat-retaining fabric in Comparative Example 2 of the present invention.

[0031] In the diagram: 1. Inner layer; 2. Composite middle layer; 21. Support layer one; 22. Support layer two; 23. Support strip; 24. Composite aerogel layer; 25. Wrapping component; 26. Vertical support component; 3. Outer layer. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] I. Materials

[0034] 1. In this application, the inner layer 1 is a commercially available pure cotton fabric, and the outer layer 3 is a commercially available 210T spring spun fabric.

[0035] 2. In the aerogel spinning solution containing volcanic rock nanoparticles and graphene oxide in this application, the mass ratio of PVA (polyvinyl alcohol), graphene oxide and volcanic rock nanoparticles is 10:1:1.

[0036] Unless otherwise specified, the methods used in this embodiment are all conventional methods known to those skilled in the art, and the reagents and materials used are all commercially available products.

[0037] II. Methods

[0038] To investigate the effects of different structural designs of the composite middle layer 2 on the durability of the moisture absorption and heat generation performance, tear resistance, and down-proof performance of the composite heat-retaining fabric, the following technical solutions of Examples 1-2 and Comparative Examples 1-2 were designed, as detailed below:

[0039] Example 1

[0040] A composite thermal storage fabric made of volcanic rock, aerogel, and graphene includes an inner layer 1, a composite middle layer 2, and an outer layer 3 arranged sequentially.

[0041] The composite middle layer 2 includes a support layer 1 21 and a support layer 22 respectively disposed on opposite sides of the inner layer 1 and the outer layer 3. The support layer 1 21 and the support layer 22 are alternating concave and convex portions, and the concave and convex portions of the support layer 1 21 and the support layer 22 correspond to each other. Several wrapping elements 25 are symmetrically arranged on the inner wall of the concave portion of the support layer 1 21 and the support layer 22. Several support strips 23 are provided between the symmetrical wrapping elements 25, and a composite aerogel layer 24 is formed between the support strips 23.

[0042] The package 25 consists of two continuously connected sides. The support strips 23 on the support layer 1 21 and the support layer 22, as well as the sides of the four packages 25 near the support strips 23, are hot-pressed into a centrally contracted shape. The side of the package 25 near the support strips 23 is wrapped around the support strips 23 and the composite aerogel layer 24 in a ring shape. The other side of the package 25 is located between the corresponding protrusions of the support layer 1 21 and the support layer 22 and is fixed together by hot pressing.

[0043] Preferably, the first support layer 21, the second support layer 22, the support strip 23, and the wrapping component 25 are all made of polyamide or polypropylene.

[0044] A method for preparing a composite thermal storage fabric of volcanic rock, aerogel, and graphene, comprising the following steps:

[0045] Step 1: Support layer 1 21 and support layer 22 are integrally extruded on inner layer 1 and outer layer 3 respectively by mold. Support layer 1 21 and support layer 22 are alternating concave and convex parts. Several wrapping parts 25 and several support strips 23 are integrally extruded on the concave parts of support layer 1 21 and support layer 22 by mold.

[0046] Step 2: An aerogel spinning solution containing volcanic rock nanoparticles and graphene oxide is used to form a composite aerogel layer 24 between the support strips 23 of the inner layer 1 and the outer layer 3 respectively through electrospinning technology.

[0047] Step 3: Place the support layer 1 21 and support layer 22 of the inner layer 1 and outer layer 3 on top of each other, with the concave and convex parts of support layer 1 21 and support layer 22 corresponding to each other. A cavity is formed between the concave parts of support layer 1 21 and support layer 22. The wrapping parts 25 of support layer 1 21 and support layer 22 correspond to each other. Heat-press the side of the wrapping part 25 near the support strip 23 to the support strip 23 of support layer 1 21 and support layer 22 to form a central shrinkage shape.

[0048] It should be noted that in step three, the hot pressing temperature is 110℃, the hot pressing pressure is 3MPa, the hot pressing is performed 3 times, and the hot pressing time for each time is 6min.

[0049] Step 4: Hot-press the protrusions of support layer 1 21 and support layer 2 22, as well as the inner layer 1, composite middle layer 2, and outer layer 3 at both ends of the cavity together to obtain the composite heat storage fabric.

[0050] It should be noted that in step four, the hot pressing temperature is 165℃, the hot pressing pressure is 7MPa, the hot pressing is performed 4 times, and the hot pressing time for each time is 5min.

[0051] It should be noted that in this embodiment, after the inner layer 1, composite middle layer 2, and outer layer 3 at both ends of the cavity are hot-pressed together, the cavity can maintain a sealed state.

[0052] Example 2

[0053] like Figure 1-5 As shown, a composite heat storage fabric of volcanic rock, aerogel, and graphene is provided in this embodiment, based on Example 1, with a vertical support 26 for supporting the package 25 between the upper and lower corresponding package 25.

[0054] Preferably, the vertical support member 26 is hollow in the middle, the outer wall of the vertical support member 26 is in contact with the side of the wrapping member 25, and the two sides of the vertical support member 26 extend outward to form a pressing part.

[0055] A method for preparing a composite thermal storage fabric of volcanic rock, aerogel, and graphene, comprising the following steps:

[0056] Step 1: Support layer 1 21 and support layer 22 are integrally extruded on inner layer 1 and outer layer 3 respectively by mold. Support layer 1 21 and support layer 22 are alternating concave and convex parts. Several wrapping parts 25 and several support strips 23 are integrally extruded on the concave parts of support layer 1 21 and support layer 22 by mold. Vertical support part 26 is integrally extruded by mold. The vertical support part 26 is hollow in the middle and extends on both sides to form a pressing part.

[0057] Step 2: An aerogel spinning solution containing volcanic rock nanoparticles and graphene oxide is used to form a composite aerogel layer 24 between the support strips 23 of the inner layer 1 and the outer layer 3 respectively through electrospinning technology.

[0058] Step 3: Place the support layer 1 21 and support layer 22 of the inner layer 1 and outer layer 3 on top of each other, with the concave and convex parts of support layer 1 21 and support layer 22 corresponding to each other. A cavity is formed between the concave parts of support layer 1 21 and support layer 22. The wrapping parts 25 of support layer 1 21 and support layer 22 correspond to each other. Place the vertical support 26 between the corresponding upper and lower wrapping parts 25, so that the outer wall of the vertical support 26 fits against the side of the wrapping part 25. Heat-press the pressed part on one side of the vertical support 26 and the side of the wrapping part 25 near the support strip 23 with the support strip 23 of support layer 1 21 and support layer 22 to form a central shrinkage shape.

[0059] It should be noted that in step three, the hot pressing temperature is 110℃, the hot pressing pressure is 3MPa, the hot pressing is performed 3 times, and the hot pressing time for each time is 6min.

[0060] Step 4: Hot-press the protrusions of support layer 1 21 and support layer 2 22, as well as the inner layer 1, composite middle layer 2, and outer layer 3 at both ends of the cavity together to obtain the composite heat storage fabric.

[0061] It should be noted that in step four, the hot pressing temperature is 165℃, the hot pressing pressure is 7MPa, the hot pressing is performed 4 times, and the hot pressing time for each time is 5min.

[0062] It should be noted that in this embodiment, after the inner layer 1, composite middle layer 2, and outer layer 3 at both ends of the cavity are hot-pressed together, the cavity can maintain a sealed state.

[0063] Comparative Example 1

[0064] like Figure 6 As shown, a composite heat storage fabric of volcanic rock, aerogel, and graphene is presented in Comparative Example 1. The difference between Comparative Example 1 and Example 2 is that the structural design of the support strip 23 and the vertical support member 26 is not present in Comparative Example 1, while the rest is consistent with Example 2.

[0065] Comparative Example 2

[0066] like Figure 7 As shown, a composite heat storage fabric of volcanic rock, aerogel, and graphene is presented in Comparative Example 2. The difference between Comparative Example 2 and Example 2 is that the structural design of the support strip 23, wrapping component 25, and vertical support component 26 is not present. All other aspects are consistent with Example 2.

[0067] III. Performance Testing Experiment

[0068] The composite heat-retaining fabrics used in the following tests on moisture absorption and heat generation performance, tear resistance performance, and down-proof performance were both unwashed composite heat-retaining fabrics and composite heat-retaining fabrics that had been washed 30 times (30 washes in a drum washing machine at a speed of 1200 r / min, with each wash lasting 23 min).

[0069] Moisture absorption and heat generation performance: The test was conducted according to GB / T29866-2013 "Test Method for Moisture Absorption and Heat Generation Performance of Textiles". The sewn fabric samples were placed in a forced-air drying oven, dried, and then transferred to a desiccant for cooling. The desiccant was then placed in a constant temperature and humidity chamber for equilibration. A temperature sensor was inserted into the sample bag, and temperature data was recorded every 30 seconds for a total measurement time of 30 minutes. After the test, the average and maximum temperature rise values ​​of the composite heat storage fabrics of Examples 1-2 and Comparative Examples 1-2 were calculated. The test data are shown in Table 1.

[0070] Table 1. Data Recording Table for Moisture Absorption and Heat Generation Performance Tests

[0071]

[0072] Experimental Results: As can be seen from the data in Table 1, there is no significant difference in the average temperature rise and maximum temperature rise of the unwashed composite heat storage fabrics of Examples 1-2 and Comparative Examples 1-2. However, the average temperature rise and maximum temperature rise of the composite heat storage fabric of Example 2 after 30 washes are significantly higher. This indicates that the composite heat storage fabric of Example 2 has better durability of moisture absorption and heat generation performance, that is, the composite heat storage fabric has better durability of heat storage performance and is more resistant to washing.

[0073] Comparing the test data of the composite heat-retaining fabrics of Examples 1-2 and Comparative Examples 1-2 after 30 washes, it can be seen that the average and maximum temperature rise values ​​of the composite heat-retaining fabrics of Comparative Examples 1-2 decreased significantly after 30 washes. Example 1, compared to Example 2, lacks the vertical support member 26. Comparative Example 1, compared to Example 2, lacks both the support strip 23 and the vertical support member 26. Comparative Example 2, compared to Example 2, lacks both the support strip 23, the wrapping member 25, and the vertical support member 26. This demonstrates that the structure of the support strip 23 allows the composite aerogel layer 24 to adhere to the support strip 23, thereby increasing the stability of the composite aerogel layer 24 and making it less prone to loosening and deformation after washing, thus enhancing the composite heat-retaining properties. The moisture absorption and heat generation performance of the thermal fabric is maintained for a longer period of time. The upper and lower corresponding wrapping parts 25 are wrapped around the support strip 23 and the composite aerogel layer 24 in a ring shape after being hot-pressed. This can provide a certain degree of protection for the support strip 23 and the composite aerogel layer 24, thereby further increasing the stability of the composite aerogel layer 24 and making it less prone to deformation, loosening, falling off, or breaking after washing. This also further makes the moisture absorption and heat generation performance of the composite thermal storage fabric last longer. The vertical support part 26 can support the wrapping part 25 to improve the stability of the structure in which the wrapping part 25 is wrapped around the support strip 23 and the composite aerogel layer 24, thereby further increasing the stability of the composite aerogel layer 24. Ultimately, this makes the moisture absorption and heat generation performance of the composite thermal storage fabric last longer.

[0074] In summary, the composite aerogel layer 24 is formed between the support strips 23, and a wrapping element 25 is provided to wrap around the support strips 23 and the composite aerogel layer 24 in a ring shape. The vertical support element 26 supports the wrapping element 25. The structural design of the two elements working together can make the entire composite middle layer 2 structure more stable, thereby making the moisture absorption and heat generation performance of the composite heat storage fabric last longer.

[0075] Tear resistance test: Experimental equipment: Q800 dynamic mechanical analyzer (DMA, TA Instruments, Inc., USA). Experimental method: The composite heat storage fabrics of Examples 1-2 and Comparative Examples 1-2 were used as samples. The sample size was a strip of 230×150mm. The sample was placed in a tensile fixture, with one end fixed and the other end movable with the fixture. The temperature was 22℃±3℃, the frequency was set to 3Hz, and the applied stress was gradually increased from 0 at a rate of 4MPa / s. The strain change of the sample was recorded until the sample broke. The stress at the fracture point was taken as the tensile strength of the sample. The test data are shown in Table 2.

[0076] Table 2. Tear Resistance Test Data Recording Table

[0077]

[0078] Experimental Results: As shown in Table 2, compared with Comparative Examples 1-2, the composite heat storage fabrics of Examples 1 and 2 have better tear resistance. This indicates that the structural design of forming a composite aerogel layer 24 between the support strips 23, and providing a wrapping element 25 that wraps around the support strips 23 and the composite aerogel layer 24, with the vertical support element 26 supporting the wrapping element 25, makes the entire composite middle layer 2 structure more stable through the cooperation of the support strips 23, composite aerogel layer 24, wrapping element 25, and vertical support element 26. This improves the structural stability of the composite heat storage fabric, increases its mechanical properties, and gives the composite heat storage fabric a better tear resistance.

[0079] Down-proof performance test: The down-proof performance of the fabric was tested according to the national standard GB / T12705.2-2009 "Textiles - Test Method for Down-proof Performance of Fabrics - Part 2: Rotating Box Method". When the number of down threads is >15, the down-proof performance is poor; when 5 < down thread count ≤15, it has down-proof performance; when the number of down threads is ≤5, it has good down-proof performance. The test data are shown in Table 3.

[0080] Table 3. Data Recording Table for Downproof Performance Test

[0081]

[0082]

[0083] Experimental Results: As shown in Table 3, the composite heat-retaining fabrics of Examples 1-2 all have good down-proof effects. A composite aerogel layer 24 is formed between the support strips 23, and a wrapping component 25 is provided to wrap around the support strips 23 and the composite aerogel layer 24. The vertical support component 26 supports the wrapping component 25. The structure design of the composite middle layer 2 is more stable and less prone to deformation after washing. Moreover, the two ends of the cavity are heat-pressed to form a sealed state, which makes it less likely for down to escape. In addition, the support strips 23, composite aerogel layer 24, wrapping component 25 and vertical support component 26 divide the cavity into several spaces of different sizes, making it difficult for down to escape, which further improves the down-proof effect of the composite heat-retaining fabric.

[0084] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A composite thermal storage fabric made of volcanic rock, aerogel, and graphene, characterized in that: It includes an inner layer (1), a composite middle layer (2), and an outer layer (3) arranged sequentially. The composite middle layer (2) includes a support layer one (21) and a support layer two (22) respectively disposed on opposite sides of the inner layer (1) and the outer layer (3). The support layer one (21) and the support layer two (22) are alternating concave and convex parts. The concave and convex parts of the support layer one (21) and the support layer two (22) correspond to each other. A number of wrapping parts (25) are symmetrically arranged on the inner wall of the concave part of the support layer one (21) and the support layer two (22). A number of support strips (23) are arranged between the symmetrical wrapping parts (25). A composite aerogel layer (24) is formed between the support strips (23). The package (25) consists of two continuously connected sides. The support strips (23) on the support layer one (21) and support layer two (22) and the four packages (25) are formed by hot pressing into a central shrinkage shape on the side of the support strip (23). The side of the package (25) on the side of the support strip (23) is wrapped around the support strip (23) and the composite aerogel layer (24) in a ring shape. The other side of the package (25) is located between the corresponding protrusions of support layer one (21) and support layer two (22) and is fixed together by hot pressing. A vertical support (26) is provided between the upper and lower corresponding package pieces (25) for supporting the package pieces (25). The vertical support member (26) is hollow in the middle, the outer wall of the vertical support member (26) is in contact with the side of the wrapping member (25), and the two sides of the vertical support member (26) extend outward to form a pressing part; The support layer one (21), support layer two (22), support strip (23), wrapping component (25), and vertical support component (26) are all made of polyamide or polypropylene material, and the composite aerogel layer (24) is made of volcanic rock nanoparticles, graphene oxide, and PVA material.

2. A method for preparing the composite thermal storage fabric of volcanic rock, aerogel, and graphene as described in claim 1, characterized in that: The specific steps are as follows: Step 1: Support layer 1 (21) and support layer 2 (22) are integrally formed on the inner layer (1) and outer layer (3) respectively by mold. Support layer 1 (21) and support layer 2 (22) are alternating concave and convex parts. Several wrapping parts (25) and several support strips (23) are integrally formed on the concave parts of support layer 1 (21) and support layer 2 (22) by mold. Step 2: An aerogel spinning solution containing volcanic rock nanoparticles and graphene oxide is electrospinned to form a composite aerogel layer (24) between the support strips (23) of the inner layer (1) and the outer layer (3). Step 3: Place the support layer 1 (21) and support layer 2 (22) of the inner layer (1) and outer layer (3) on top of each other, with the concave and convex parts of support layer 1 (21) and support layer 2 (22) corresponding to each other, forming a cavity between the concave parts of support layer 1 (21) and support layer 2 (22), and the wrapping parts (25) of support layer 1 (21) and support layer 2 (22) corresponding to each other. Heat-press the side of the wrapping part (25) near the support strip (23) to the support strip (23) of support layer 1 (21) and support layer 2 (22) to form a central shrinkage shape. Step 4: Hot press together the protrusions of support layer 1 (21) and support layer 2 (22) and the inner layer (1), composite middle layer (2) and outer layer (3) at both ends of the cavity to obtain the composite heat storage fabric.

3. The method for preparing a composite thermal storage fabric of volcanic rock, aerogel, and graphene according to claim 2, characterized in that: In step one, a vertical support component (26) is integrally formed by a mold. The vertical support component (26) is hollow in the middle and extends on both sides to form a pressing part. In step three, the vertical support (26) is placed between the upper and lower corresponding wrapping pieces (25), so that the outer wall of the vertical support (26) fits against the side of the wrapping piece (25), and then the pressing part on one side of the vertical support (26), the side of the wrapping piece (25) near the support strip (23), and the support strip (23) of the support layer one (21) and the support layer two (22) are hot-pressed together to form a central shrinkage shape.

4. The method for preparing a composite thermal storage fabric of volcanic rock, aerogel, and graphene according to claim 3, characterized in that: In step three, the hot pressing temperature is 105-115℃, the hot pressing pressure is 2-4MPa, the hot pressing is performed 2-4 times, and the hot pressing time for each time is 4-7min.

5. The method for preparing a composite thermal storage fabric of volcanic rock, aerogel, and graphene according to claim 3, characterized in that: In step four, the hot pressing temperature is 155-170℃, the hot pressing pressure is 5-8MPa, the number of hot pressing cycles is 3-5, and the hot pressing time for each cycle is 3-6 minutes.

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