High-strength, fireproof, heat-insulating, impact-resistant and bulletproof composite fabric

Abstract

The utility model provides a high-strength, fireproof, heat-insulating, impact-resistant and bulletproof composite fabric, and belongs to the field of safety protection equipment. The composite fabric comprises a fireproof coat cover, a functional layer and a diffusion layer from outside to inside; the functional layer comprises a bulletproof layer, a buffering fireproof layer and an energy absorption layer, the buffering fireproof layer is arranged between the bulletproof layer and the energy absorption layer, and the buffering fireproof layer comprises at least one aerogel layer. The fireproof inorganic fiber fabric and the high-strength impact-resistant fabric are integrally compounded by adopting a multi-layer composite lamination technology to obtain the fireproof impact-resistant body armor, and compared with a traditional metal plate body armor, the fireproof impact-resistant body armor can effectively reduce secondary damage to a human body caused by flow bombs generated by impact, effectively resist damage to the human body caused by the impact and improve the safety of the human body. The defect that a traditional bulletproof fabric is not fireproof and flame-retardant is overcome. The multifunctional composite fabric is more wear-resistant, more fireproof, more impact-resistant, better in bulletproof effect and suitable for high-quality functional special battle bulletproof clothes.

Description

Technical Field

[0001] This utility model relates to the field of safety protection equipment technology, specifically to a high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric. Background Technology

[0002] With the development of technology, military protective equipment is receiving increasing attention. Bulletproof vests, as essential personal protective equipment for soldiers, play a crucial role in protecting soldiers' lives and shielding them from bullet fragments. While existing conventional bulletproof vests can meet protection needs to a certain extent, they still have certain technical shortcomings. Patent CN209326459U discloses a high-strength bulletproof vest structure, employing a multi-layered structure consisting of a fire-resistant layer, a first blocking layer, a first absorbent layer, a second blocking layer, a second absorbent layer, an air-filled layer, and a cushioning layer. The fire-resistant layer is composed of basalt fiber; the first blocking and first cushioning layers are composed of ceramic sheets and at least six layers of aramid fiber fabric; the second blocking and second cushioning layers are composed of titanium alloy and four layers of aramid fiber fabric; and the air-filled and cushioning layers are composed of air and cotton fibers, respectively. This patent improves protective effectiveness and comfort, but suffers from problems such as easy leakage of the air layer, flammability of cotton fibers, and high cost of aramid fibers. The patent with publication number CN109579618A discloses a composite bulletproof vest, which consists of a bullet-absorbing layer, a protective layer, a buffer layer and an energy-absorbing layer. The bullet-absorbing layer is formed by aluminum foam sandwiched between carbon fiber plates. The buffer layer improves protection against stray bullets and energy absorption by designing a conical spherical structure, but reduces breathability, the conical structure is easy to deform, affecting impact resistance, and has poor fire resistance.

[0003] Therefore, how to effectively improve the fire resistance of bulletproof vests while maintaining their bulletproof performance, and how to overcome the problems of easy twisting and poor wearability by applying inorganic fibers to fabrics, so as to comprehensively improve the impact resistance and fire retardant performance of bulletproof vests, are urgent problems to be solved. Utility Model Content

[0004] In view of the technical problems existing in the background art, this application provides a high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric, which aims to solve the technical problem of poor impact resistance and fire-retardant performance of bulletproof vests.

[0005] This utility model provides a high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric, which consists of a fireproof hood, a functional layer, and a diffusion layer from the outside to the inside. The functional layer has a multi-layer structure, including a bulletproof layer, a buffer fireproof layer, and an energy-absorbing layer. The buffer fireproof layer is disposed between the bulletproof layer and the energy-absorbing layer, and the buffer fireproof layer includes at least one aerogel layer.

[0006] As a further improvement of this utility model, the functional layer has a three-layer structure, consisting of a bulletproof layer, a buffer fireproof layer, and an energy-absorbing layer from the outside to the inside; or the functional layer has a five-layer structure, consisting of a bulletproof layer, a buffer fireproof layer, an energy-absorbing layer, a buffer fireproof layer, and a bulletproof layer from the outside to the inside.

[0007] As a further improvement of this utility model, the fireproof cover is made of inorganic heat-insulating fiber and organic fireproof fiber. The inorganic heat-insulating fiber is composed of 50 to 450 multifilaments, and the diameter of a single fiber is 3 to 7 μm.

[0008] As a further improvement of this utility model, the inorganic heat-insulating fiber is one of basalt fiber, quartz fiber, ceramic fiber, silicon nitride fiber and silicon carbide fiber.

[0009] As a further improvement of this utility model, the organic fire-retardant fiber is one of polyimide fiber, flame-retardant acrylic fiber and flame-retardant viscose fiber, and the fineness of the organic fire-retardant fiber is 550-850 tex.

[0010] As a further improvement of this utility model, the bulletproof layer comprises 8 to 12 layers of ultra-high strength composite material, wherein the ultra-high strength composite material is one or two of ultra-high molecular weight polyethylene fiber, Kevlar aramid fiber, nylon fiber and shear thickening liquid.

[0011] As a further improvement of this utility model, the buffer fireproof layer includes 1 to 2 layers of aerogel and 4 to 6 layers of inorganic fiber fabric, wherein the inorganic fiber fabric is one or two of carbon fiber cloth, basalt fiber cloth, glass fiber cloth and ceramic fiber cloth.

[0012] As a further improvement of this utility model, the energy-absorbing layer comprises 4 to 6 layers of organic fiber cloth or inorganic fiber cloth; the organic fiber cloth is one or two of polyimide fiber, aramid fiber, polyester fiber, nylon fiber and spandex fiber; the inorganic fiber cloth is one or two of carbon fiber, silicon carbide fiber and silicon nitride fiber.

[0013] As a further improvement of this utility model, the diffusion layer is made of a high-strength flexible composite board, which is a high-strength graphene composite board or a polyurethane composite rock wool board.

[0014] As a further improvement of this utility model, the high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric also includes a fireproof cover disposed inside the diffusion layer.

[0015] The beneficial effects of this utility model are:

[0016] This invention provides a high-strength, fire-resistant, heat-insulating, and impact-resistant bulletproof composite fabric, comprising, from the outside to the inside, a fireproof vest, a functional layer, and a diffusion layer. The functional layer has a multi-layered structure, including a bulletproof layer, a buffer fireproof layer, and an energy-absorbing layer. The buffer fireproof layer is disposed between the bulletproof layer and the energy-absorbing layer, and includes at least one aerogel layer. This application, through the composite of multiple materials, effectively reduces secondary injuries to the human body from stray bullets compared to traditional metal plate bulletproof vests, effectively resisting impact injuries. The buffer fireproof layer, while buffering bullets, also has flame-retardant and fire-resistant functions, preventing ignition when resisting high-temperature bullets or stray bullets, thus combining bulletproof and fireproof capabilities. The energy-absorbing layer transforms the impact energy acting on the bulletproof vest from a point to a surface, reducing the damage caused by excessive local impact energy. This invention features a simple preparation method, multiple functions, excellent performance, and ease of industrialization.

[0017] The high-strength, fireproof, heat-insulating, and impact-resistant bulletproof composite fabric provided by this utility model can be applied to fields such as police bulletproof vests, military bulletproof vests, special protective clothing, and tank outer covers. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric in the embodiments of this application;

[0020] Figure 2 This is a cross-sectional schematic diagram of the high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric in Embodiment 1 of this application;

[0021] Figure 3 The bulletproof effect of the high-strength, fireproof, heat-insulating, and impact-resistant bulletproof composite fabrics prepared in Example 1 and Comparative Examples 1-2 of this application;

[0022] Figure 4 The results are the fire resistance performance test results of the buffer fireproof layer in Example 1 and Comparative Examples 3-4 of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Bulletproof layer; 2. Buffer fireproof layer; 3. Energy-absorbing layer; 4. Diffusing layer; 5. Fireproof clothing cover. Detailed Implementation

[0025] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In existing technologies, the fire resistance of bulletproof vests is generally insufficient, especially when facing high-heat impacts such as high-temperature grenade fragments. Traditional bulletproof vests mainly consist of a hood, a bulletproof layer, a cushioning layer, and bulletproof inserts. The aramid fibers or ultra-high molecular weight polyethylene fibers used in these vests are prone to carbonization or failure at high temperatures, thus reducing their protective effect.

[0030] To address the technical issues of poor impact resistance and fire retardant properties in bulletproof vests, this application provides a high-strength, fire-resistant, heat-insulating, and impact-resistant bulletproof composite fabric. Through the composite of multiple materials, the fabric possesses multiple protective functions, including high strength, fire resistance, heat insulation, impact resistance, and bulletproof protection, providing comprehensive protection for the user.

[0031] This application provides a high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric, which consists of a fireproof cover 5, a functional layer, and a diffusion layer 4 from the outside to the inside. The functional layer has a multi-layer structure, including a bulletproof layer 1, a buffer fireproof layer 2, and an energy-absorbing layer 3. The buffer fireproof layer 2 is disposed between the bulletproof layer 1 and the energy-absorbing layer 3, and the buffer fireproof layer 2 includes at least one aerogel layer.

[0032] Specifically, the processing method of the high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric provided in this application includes the following steps:

[0033] S1. Using inorganic heat-insulating fiber as the core yarn and organic fire-retardant fiber as the outer yarn, the core-spun yarn is formed through spinning technology and then processed by integrated weaving to obtain the fireproof clothing cover 5;

[0034] S2. Several layers of ultra-high strength composite material are bonded and laminated to obtain bulletproof layer 1;

[0035] S3. Several layers of inorganic fiber fabric and aerogel layer are bonded and laminated to obtain buffer fireproof layer 2;

[0036] S4. Composite several layers of organic or inorganic fiber cloth to obtain energy-absorbing layer 3;

[0037] S5. Using high-strength composite flexible board as diffusion layer 4, fireproof cover 5, bulletproof layer 1, buffer fireproof layer 2, energy-absorbing layer 3 and diffusion layer 4 are combined in order from the outside to the inside to obtain high-strength-fireproof heat insulation-impact-bulletproof composite fabric.

[0038] This application employs a multi-layered design, enabling multiple absorption and dispersion of impact energy, thereby improving the overall protective performance of the fabric. Through the selection and combination of materials in each layer, a comprehensive improvement in the fabric's strength, fire resistance, heat insulation, impact resistance, and ballistic performance is achieved. Integrated weaving, bonding, and lamination processes are used to tightly bond the materials together, forming a robust and stable composite fabric. The combined use of inorganic heat-insulating fibers and organic fire-retardant fibers enhances the fabric's heat insulation and fire resistance; the combination of ultra-high-strength composite materials and inorganic fiber fabrics improves the fabric's strength and impact resistance; and the use of organic or inorganic fiber fabrics with high-strength flexible composite materials enhances the fabric's energy absorption and diffusion properties. Through this multi-layered design and synergistic material effects, the resulting composite fabric provides comprehensive protection for the user.

[0039] Furthermore, in some embodiments, the functional layer has a three-layer structure, consisting of a bulletproof layer 1, a buffer fireproof layer 2, and an energy-absorbing layer 3 from the outside to the inside; or the functional layer has a five-layer structure, consisting of a bulletproof layer 1, a buffer fireproof layer 2, an energy-absorbing layer 3, a buffer fireproof layer 2, and a bulletproof layer 1 from the outside to the inside.

[0040] In the technical solutions of this application embodiment, through different structural configurations, this composite fabric can provide customized protective performance according to different application requirements. The three-layer structure provides necessary protection while ensuring lightness, while the five-layer structure provides a higher level of safety protection by adding an additional protective layer.

[0041] Furthermore, in some embodiments, the inorganic heat-insulating fiber is one of basalt fiber, quartz fiber, ceramic fiber, silicon nitride fiber, and silicon carbide fiber; the inorganic heat-insulating fiber is composed of 50 to 450 multifilaments, and the diameter of a single fiber is 3 to 7 μm. The organic fire-retardant fiber is one of polyimide fiber, flame-retardant acrylic fiber, and flame-retardant viscose fiber; the fineness of the organic fire-retardant fiber is 550 to 850 tex.

[0042] In the technical solution of this application embodiment, inorganic heat-insulating fibers have high melting points and good heat insulation properties, effectively preventing heat transfer. The fine fiber diameter helps increase the specific surface area of ​​the fibers, thereby enhancing their heat insulation performance and the overall strength of the composite material. Organic fire-retardant fibers have good fire-retardant properties, remaining stable at high temperatures and not easily burning or melting. The fineness of the organic fire-retardant fibers is 550 to 850 tex, which helps improve the strength and durability of the fabric. The spinning technology is one of ring spinning, friction spinning, rotor spinning, and vortex spinning.

[0043] Furthermore, in some embodiments, the bulletproof layer 1 comprises 8 to 12 layers of ultra-high strength composite material; the ultra-high strength composite material is one or two of ultra-high molecular weight polyethylene fiber, Kevlar aramid fiber, nylon fiber and shear thickening liquid.

[0044] In the technical solution of this application embodiment, lamination effectively bonds the layers together, reducing air residue and ensuring a tighter bond. This results in better protection during subsequent ballistic and impact resistance, reducing the probability of penetration. The bonding method is resin adhesive, with the resin accounting for 5-15% of the material, and the lamination settling time is 16-24 hours. This multi-layer structure design significantly enhances the protective capability of the ballistic layer 1, effectively resisting penetration by high-speed projectiles.

[0045] Furthermore, in some embodiments, the buffer fireproof layer 2 includes 1 to 2 aerogel layers and 4 to 6 layers of inorganic fiber fabric; the inorganic fiber fabric is one or two of carbon fiber cloth, basalt fiber cloth, glass fiber cloth and ceramic fiber cloth.

[0046] In the technical solution of this application embodiment, multi-layer inorganic fiber fabric is subjected to multi-layer adhesive lamination treatment. The adhesion method is one of bonding and composite bonding between layers with resin adhesive, knitted three-dimensional spacer fabric, and woven three-dimensional fabric. This allows the single-layer fabric to be effectively connected during the stacking process, and the multi-layer flexible fabric has a good cushioning effect. The multi-layer structure design can effectively absorb impact energy and provide good fireproof and heat insulation effects.

[0047] Furthermore, in some embodiments, the energy-absorbing layer 3 includes 4 to 6 layers of organic fiber cloth or inorganic fiber cloth; the organic fiber cloth is one or two of polyimide fiber, aramid fiber, polyester fiber, nylon fiber and spandex fiber; the inorganic fiber cloth is one or two of carbon fiber, silicon carbide fiber and silicon nitride fiber.

[0048] In the technical solution of this application embodiment, organic fibers have good flexibility and abrasion resistance, while inorganic fibers have high strength and good thermal stability. The multi-layer structure design helps to improve the energy absorption capacity of the energy-absorbing layer 3, enabling it to effectively disperse and absorb energy upon impact, thereby reducing harm to the human body. The composite method is resin bonding, with an adhesive content of 10% to 15%. The remaining energy after passing through the buffer layer diffuses from point to surface on the energy-absorbing layer 3, resulting in uniform energy diffusion and reducing further deformation of the bulletproof vest.

[0049] Furthermore, in some embodiments, the diffusion layer 4 is made of a high-strength composite flexible board, and the high-strength flexible composite material is a high-strength graphene composite board or a polyurethane composite rock wool board.

[0050] In the technical solution of this application embodiment, a high-strength composite flexible material is used to attach to the back of the energy-absorbing layer 3 and to the surface of human skin, so as to diffuse the energy passing through the energy-absorbing layer 3, avoid direct contact with the human body, and reduce damage.

[0051] Furthermore, in some embodiments, the high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric also includes a fireproof cover 5 disposed inside the diffusion layer 4.

[0052] In the technical solution of this application embodiment, the inner and outer fireproof clothing cover 5 can more effectively block heat and flames, improve the durability and reliability of the fabric, and the double-layer structure increases the service life of the fabric, maintaining its performance even under extreme conditions. The space between the inner and outer layers helps to more effectively absorb and disperse impact energy, improving bulletproof and impact resistance.

[0053] The following are some specific embodiments. It should be noted that the embodiments described below are exemplary and are only used to explain this application, and should not be construed as limiting this application. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments whose manufacturers are not specified are all conventional products that can be obtained commercially.

[0054] I. Preparation Method

[0055] Example 1

[0056] Example 1 provides a high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric, with the following structure: Figure 1 and Figure 2 As shown, from the outside to the inside, the structure consists of a fireproof cover 5, a bulletproof layer 1, a buffer fireproof layer 2, an energy-absorbing layer 3, a buffer fireproof layer 2, a bulletproof layer 1, a diffusion layer 4, and a fireproof cover 5. Its processing method includes the following steps:

[0057] S1. Basalt filaments are used as core yarns and flame-retardant viscose fibers are used as outer yarns. The basalt filaments are fed into the covering zone of the spinning machine with constant tension. The flame-retardant roving is drawn into uniformly arranged short fibers through the drafting zone of the spinning machine. In the yarn covering zone, the basalt filaments and short fibers merge to form fireproof and heat-insulating core yarn. The fireproof clothing cover 5 is obtained through integrated weaving.

[0058] S2, the bulletproof layer 1 is composed of 10 layers of ultra-high molecular weight polyethylene non-woven fabric, and the layers are bonded together with resin adhesive; the bulletproof vest consists of two bulletproof layers 1, which are placed in the second and sixth layers respectively;

[0059] S3, the buffer fireproof layer 2 is composed of 5 layers: 1 layer of carbon fiber cloth, 3 layers of basalt fiber cloth and 1 layer of aerogel layer, which are bonded together. The buffer fireproof layer 2 is placed in the third and fifth layers respectively, and the energy-absorbing layer 3 is sandwiched between the two buffer fireproof layers 2.

[0060] S4. The energy-absorbing layer 3 is composed of 5 layers of carbon fiber cloth and is placed between the two buffer fireproof layers 2, that is, the fourth layer. It can absorb energy to a greater extent. Using carbon fiber as the energy-absorbing layer 3 can conduct away the heat of the high-temperature impact object on the one hand, and transform the point impact into a surface impact on the other hand, so as to dissipate the energy to the maximum extent.

[0061] S5 and diffusion layer 4 are made of polyurethane composite rock wool board with a certain degree of hardness to ensure further diffusion of energy during impact and to ensure contact with the human body with minimal deformation.

[0062] Comparative Examples 1-4

[0063] Comparative Examples 1-4 each provide a high-strength, fire-resistant, heat-insulating, and impact-resistant bulletproof composite fabric. The only difference from Example 1 is that in Comparative Example 1, the positions of the buffer fireproof layer 2 and the bulletproof layer 1 are swapped, i.e., the buffer fireproof layer 2 is placed in the second and sixth layers, and the bulletproof layer 1 is placed in the third and fifth layers; Comparative Example 2 does not have a diffusion layer 4; in Comparative Example 3, the buffer fireproof layer 2 does not have a carbon fiber layer; in Comparative Example 4, the buffer fireproof layer 2 does not have a carbon fiber layer and the aerogel layer in the buffer fireproof layer 2 is replaced with an air layer; other conditions are basically the same as in Example 1, and will not be repeated here.

[0064] II. Testing Methods

[0065] 1. Impact resistance test

[0066] Before each test, the clay backing was placed in an oven (50℃) for 30 minutes to soften it. It was then rolled flat with a wooden stick, and a 1kg iron ball was dropped freely from a height of 2m above the clay, forming a crater on the clay surface. The depth of the crater was used to compare with the depth of the crater formed by subsequent impacts, reflecting the impact energy on the human body. The projectile used in this test was a 7.62mm diameter, 5.56g lead core bullet. The bullet velocity during the test was 400m / s.

[0067] 2. Fire resistance performance test

[0068] The fabric was scorched on one side with a spray gun, while the other side was monitored in real time with a temperature probe. The spray gun temperature was approximately 1142℃, and the treatment time was 30 seconds.

[0069] III. Analysis of Test Results for Each Embodiment and Comparative Example

[0070] like Figure 3 As shown, the flame-retardant and fireproof bulletproof vest prepared in Example 1 exhibits excellent overall bulletproof performance. After being hit by a lead-core bullet at 400 m / s, the crater formed on the back of the vest in the putty is 7.38 mm, providing good protection. The high-strength polyurethane board used in the skin-adhesive layer effectively diffuses the remaining energy. In Comparative Example 1, the basalt layer directly contacts the projectile, and the remaining energy is diffused using a high-strength polyurethane board. The crater depth is 12.76 mm, which is less effective than in Example 1, indicating that the buffer fireproof layer 2 placed in the inner layer has a significant effect. Comparative Example 2 lacks the diffusion layer 4, resulting in a larger crater depth and poorer protective effect.

[0071] The fire resistance performance test results of the buffer fireproof layer 2 are as follows: Figure 4 As shown, through the three-component spray gun experiment, the highest back temperature of the buffer fireproof layer 2 in Comparative Example 4 reached 119.933℃ after 30 seconds of spray gun action; the highest back temperature of the buffer fireproof layer 2 in Comparative Example 3 reached 76.900℃ after 30 seconds of spray gun action; and the highest back temperature of the buffer fireproof layer 2 in Example 1 reached 47.333℃ after 30 seconds of spray gun action. Compared with Comparative Example 4, the buffer fireproof layer 2 with the aerogel layer showed a significant fireproof and heat insulation effect within 30 seconds, with a heat insulation temperature increase of 43.033℃ compared to the fabric without the aerogel layer. Compared with Example 1 and Comparative Example 3, when adding the same aerogel layer, the addition of a carbon fiber cloth layer to the outer layer significantly improved the heat insulation performance of the fabric, increasing it by approximately 29.567℃, indicating that the addition of carbon fiber can improve the fireproof and heat insulation performance of the fabric.

[0072] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric, characterized in that, From the outside to the inside, the structure consists of a fireproof cover, a functional layer, and a diffusion layer. The functional layer has a multi-layer structure, including a bulletproof layer, a buffer fireproof layer, and an energy-absorbing layer. The buffer fireproof layer is disposed between the bulletproof layer and the energy-absorbing layer, and the buffer fireproof layer includes at least one aerogel layer.

2. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The functional layer has a three-layer structure, consisting of a bulletproof layer, a buffer fireproof layer, and an energy-absorbing layer from the outside in. Alternatively, the functional layer may have a five-layer structure, consisting of a bulletproof layer, a buffer fireproof layer, an energy-absorbing layer, a buffer fireproof layer, and a bulletproof layer, from the outside in.

3. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The fireproof cover is made of inorganic heat-insulating fiber and organic fire-resistant fiber. The inorganic heat-insulating fiber is composed of 50 to 450 multifilaments, and the diameter of a single fiber is 3 to 7 μm.

4. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 3, characterized in that, The inorganic heat-insulating fiber is one of basalt fiber, quartz fiber, ceramic fiber, silicon nitride fiber, and silicon carbide fiber.

5. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 3, characterized in that, The organic fire-retardant fiber is one of polyimide fiber, flame-retardant acrylic fiber, and flame-retardant viscose fiber, and the fineness of the organic fire-retardant fiber is 550~850 tex.

6. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The bulletproof layer comprises 8 to 12 layers of ultra-high strength composite material, which is one or two of ultra-high molecular weight polyethylene fiber, Kevlar aramid fiber, nylon fiber, and shear thickening liquid.

7. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The buffer fireproof layer includes 1-2 layers of aerogel and 4-6 layers of inorganic fiber fabric, wherein the inorganic fiber fabric is one or two of carbon fiber cloth, basalt fiber cloth, glass fiber cloth and ceramic fiber cloth.

8. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The energy-absorbing layer comprises 4 to 6 layers of organic or inorganic fiber cloth; the organic fiber cloth is one or two of polyimide fiber, aramid fiber, polyester fiber, nylon fiber and spandex fiber; the inorganic fiber cloth is one or two of carbon fiber, silicon carbide fiber and silicon nitride fiber.

9. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The diffusion layer is made of a high-strength composite flexible board, which is either a high-strength graphene composite board or a polyurethane composite rock wool board.

10. The high-strength, fire-resistant, heat-insulating, impact-resistant, and bulletproof composite fabric according to claim 1, characterized in that, The high-strength, fireproof, heat-insulating, impact-resistant, and bulletproof composite fabric also includes a fireproof cover installed inside the diffusion layer.

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