A method for preparing bionic structure ceramic composite armor

Abstract

A method for preparing a bionic structure ceramic composite armor relates to the field of materials. The purpose of the present invention is to solve the problem that the current composite armor cannot be both lightweight and capable of ballistically guiding and reducing the speed of fragment loads. The method of the present invention comprises the following steps: preparing arc-shaped ceramic blocks, preparing steel plates, cutting ultra-high molecular weight polyethylene fibers, preparing ultra-high molecular weight polyethylene fiberboards, cleaning by sandblasting, laying the ultra-high molecular weight polyethylene fiberboards, steel plates and arc-shaped ceramic blocks in sequence, and curing by autoclave or vacuum-assisted molding. The ceramic block preparation process of the present invention, in which the ceramic powder and the adhesive are injected into a mold to form an integral part, is simple to operate, has high production efficiency, and is suitable for mass production. With the increasing demand for lightweight protective armor and diversified functions, the future application prospects will be broader.

Description

Technical Field

[0001] The invention relates to the field of materials, and in particular to a method for preparing a composite armor composed of a ceramic material, a metal material and an ultra-high molecular weight polyethylene (UHMWPE) material. Background Art

[0002] The demand for lightweight structure and high-efficiency protection in the field of armor protection is increasing day by day. Through the design and optimization of the structure, the reasonable configuration of different anti-ballistic materials can cope with the complex situations in various battlefield environments, which has become an important development trend in the field of armor protection.

[0003] Ceramic materials have excellent anti-ballistic penetration performance due to their high hardness, high strength and high compression modulus. However, due to their poor toughness and easy breakage, they cannot be used alone as protective armor materials. They are usually combined with metal materials or high-performance fiber-resin-based composite materials to form composite armor. Metal materials can support ceramic materials in composite armor due to their high strength and hardness. Fiber-resin-based composite materials have better specific strength and specific stiffness than metals, and have no "secondary killing effect". Therefore, they can give full play to their energy absorption advantages in composite armor, thereby improving the overall anti-ballistic performance of composite armor.

[0004] The existing composite armor is developing towards lightweight, but it is unable to take into account both the ballistic guidance and velocity reduction of the fragment load. For example, patent publication number CN110749235A discloses an ultra-light armor product and its preparation method, and provides an ultra-light armor product including a fiber laminate; a metal plate bonded to the surface of the fiber laminate; a fiber cloth bonded to the surface of the metal plate; a plurality of encapsulated ceramic blocks bonded to the surface of the fiber cloth, wherein the encapsulated ceramic blocks are ceramic blocks inside and encapsulated with fiber cloth outside; and fiber cloth bonded to the surface of the plurality of encapsulated ceramic blocks. Through three-dimensional wrapping and encapsulation, the independent small ceramic blocks are reconstructed into a whole, and the overall structural strength is large, and it has strong mechanical properties, such as bending performance, earthquake resistance, and collision damage resistance; the bulletproof ability is improved; it can be repaired and used for a second time, and the use efficiency of the ceramic plate is improved. However, the ultra-light armor of the patent document does not have the function of ballistic guidance of the fragment load, but is bulletproof through armor composed of metal plates, fiber layers and ceramics.

[0005] Patent publication number CN111811324B discloses a lightweight composite armor and a manufacturing method thereof, and provides that the lightweight composite armor includes an inner layer, a transition layer and an outer layer from the inside to the outside; the transition layer is fixed to the inner layer and the outer layer by epoxy resin respectively; the inner layer is a composite of carbon fiber and epoxy resin; the transition layer includes a corrugated ceramic plate and an ultra-high molecular weight polyethylene fiber cloth surrounding the outside of the ceramic plate; hollow rubber microspheres are arranged in the gap between the ceramic plate and the ultra-high molecular weight polyethylene fiber cloth, and filled with epoxy resin; the outer layer is a modified boron carbide ceramic plate; the modified boron carbide ceramic plate is prepared by mixing 50-60 parts of boron carbide fiber, 1-2 parts of cerium oxide, 30-40 parts of silicon carbide, and 6-12 parts of graphene according to weight, and then putting it into a grinder for grinding for 58-65 minutes, and then pressing the ground mixture into a shape, and hot pressing and sintering it. Although this patent application also uses silicon carbide ceramics or boron carbide ceramics, it does not provide any method for using such ceramics to prepare lightweight armor with fragment load for ballistic guidance and velocity reduction.

[0006] Patent publication number CN113310354A discloses a protective vehicle lightweight composite bulletproof armor plate and its preparation and installation method, and provides a protective vehicle lightweight composite bulletproof armor plate, which is arranged in sequence from the outside to the inside, including a panel cavity, a bulletproof base layer, an adhesive layer B, a bulletproof lining layer and a back plate layer; the panel cavity is located at the outermost side, and an adhesive layer A and a ceramic layer are arranged inside the panel cavity, and the adhesive layer A is a structural adhesive layer, which fixes and bonds the internal polygonal small ceramic sheet and the external panel cavity; the bulletproof base layer is a bulletproof steel plate; the bulletproof lining layer adopts an aramid fiber layer or a polyethylene fiber, which is bonded layer by layer by a phenolic modified resin and molded; the panel cavity is connected to the bulletproof base layer by a reinforced bolt assembly, and the reinforced bolt assembly includes a bolt, an armor plate steel reinforcement sheet located at the top of the bolt, a double nut and an armor plate steel washer sleeved on the bolt; the corresponding preparation and installation methods are also disclosed. This patent also uses small ceramic pieces in combination with panel cavities for effective protection, but the armor of this patent does not have the functions of ballistic guidance and speed reduction.

[0007] Based on this, developing a composite armor that is lightweight, ballistically guides fragment loads, and reduces velocity will help improve the protective performance of the armor. Summary of the invention

[0008] The purpose of the present invention is to solve the problem that the current composite armor cannot have both lightweight and the performance of ballistic guidance and velocity reduction of fragment load, and to provide a method for preparing a bionic structure ceramic composite armor.

[0009] The method for preparing a bionic structure ceramic composite armor of the present invention is carried out according to the following steps:

[0010] Step 1, preparation of arc-shaped ceramic blocks: injecting silicon carbide or boron carbide ceramic powder and adhesive into an arc-shaped ceramic block forming mold, forming by hot die casting, and demolding after pressure holding and condensation; the arc-shaped ceramic block has a curvature range of 0 to π / 2;

[0011] Step 2: Preparation of steel plate: cutting the steel plate according to the required size and bending the steel plate into the same shape as the arc-shaped ceramic block;

[0012] Step 3: Cutting of ultra-high molecular weight polyethylene fiber: placing the ultra-high molecular weight polyethylene fiber on a material cutting machine and cutting the required number of layers according to the set size;

[0013] Step 4, preparation of ultra-high molecular weight polyethylene fiber board: each layer of the ultra-high molecular weight polyethylene fiber cut in step 3 is evenly laid on the curing mold in sequence, and after the laying is completed, it is cured by using a high temperature and high pressure molding process;

[0014] Step 5: Use sandblasting to treat the surface of the steel plate in step 2, and then clean the surface of the steel plate;

[0015] Step 6, cleaning the surfaces of the arc-shaped ceramic block in step 1 and the ultra-high molecular weight polyethylene fiberboard in step 4 in turn;

[0016] Step seven, bonding the arc-shaped ceramic block, steel plate and ultra-high molecular weight polyethylene fiberboard processed in steps five and six: sticking adhesive film on both sides of the steel plate, laying them in the order of ultra-high molecular weight polyethylene fiberboard, steel plate and arc-shaped ceramic block, and curing them using an autoclave or vacuum-assisted molding process to complete the preparation of the bionic structural ceramic composite armor.

[0017] The present invention combines bionics to enable the composite armor to guide the trajectory and reduce the speed of fragment loads, thereby improving the overall anti-ballistic performance of the composite armor. Since the armor of the present invention is composited with lightweight ceramic materials and fiber materials on the basis of steel plates, it can meet the demand for lightweight composite armor in engineering practice.

[0018] The present invention has the following beneficial effects:

[0019] Compared with traditional protective armor, the composite armor involved in the present invention has innovative features such as lightweight structure, ballistic guidance of fragment loads and high anti-ballistic performance. The structural mass is reduced by introducing low-density ceramic materials and ultra-high molecular weight polyethylene (UHMWPE) fiber materials, thereby achieving the purpose of lightweight structure; by cutting ceramic blocks into curved special-shaped ceramic blocks, the trajectory of vertically incident fragment loads can be deflected after penetrating the composite armor, thereby achieving the purpose of trajectory guidance; compared with existing traditional protective armor, this invention can better achieve the protective effect required in engineering applications. The autoclave molding process and the vacuum-assisted molding process can reduce the production cost of the composite armor, and at the same time can make the protective materials in the composite armor give full play to their energy absorption capacity, thereby achieving the purpose of reducing the kinetic energy of the fragment load and improving the anti-ballistic performance of the armor ( Figure 3 ).

[0020] The ceramic block preparation process of the present invention, in which the ceramic powder and the adhesive are injected into the mold to form an integral body, is simple to operate and has high production efficiency, and is suitable for mass production. The ceramic blocks used in the composite armor of the present invention are all independently prepared and installed, avoiding the disadvantage that the overall ceramic of the same size is partially broken and affects the overall structural strength, and the damage of a single ceramic block can be partially repaired and replaced. The biggest feature of the corrugated composite armor designed in combination with the bionic concept of the present invention is that it is structurally different from traditional flat armor. By optimizing the surface shape of the armor, the flat structure is changed into a corrugated structure with a certain curvature, thereby achieving the purpose of guiding the trajectory of the fragment load ( Figure 5 , Figure 6 ). With the increasing demand for lightweight and diversified functions of protective armor, the future application prospects will be broader. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the bionic structure ceramic composite armor structure of the present invention; wherein A is an arc-shaped ceramic block, B is a steel plate, and C is an ultra-high molecular weight polyethylene fiberboard;

[0022] Figure 2 The failure mode diagram of different positions of the composite armor being impacted by fragment loads at different times; the fragment impact position on the left side of the figure is a circular arc convex point; the fragment impact position in the middle is a circular arc surface; the fragment impact position on the right side is a circular arc concave point; the total impact time of all fragments is 0.2ms, and the incident speed is 800m / s;

[0023] Figure 3 The energy absorption curve of each part of the composite armor changes with the fragment incident time when the fragment incident speed is 800m / s; among them, the ■ curve is the energy absorbed by all arc-shaped ceramics, the ● curve is the energy absorbed by the steel plate, and the ▲ curve is the energy absorbed by the ultra-high molecular weight polyethylene (UHMWPE) fiberboard;

[0024] Figure 4 It is the shape diagram of the arc-shaped ceramic block in the present invention;

[0025] Figure 5 It is the maximum residual velocity diagram of the fragment load under different arcs of the arc-shaped ceramic block;

[0026] Figure 6 It is a comparison diagram of the ballistic response when the fragment load impacts the composite armor of the present invention and the traditional planar composite armor of the same mass at the same distance from the armor. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clearly understood, the spirit of the contents disclosed by the present invention will be described in detail below. After understanding the embodiments of the contents of the present invention, any technician in the relevant technical field can change and modify them according to the techniques taught by the contents of the present invention without departing from the spirit and scope of the contents of the present invention.

[0028] Specific implementation method 1: A method for preparing a bionic structure ceramic composite armor in this implementation method is carried out according to the following steps:

[0029] Step 1, preparation of arc-shaped ceramic blocks: injecting silicon carbide or boron carbide ceramic powder and adhesive into an arc-shaped ceramic block forming mold, forming by hot die casting, and demolding after pressure holding and condensation; the arc-shaped ceramic block has a curvature range of 0 to π / 2;

[0030] Step 2: Preparation of steel plate: cutting the steel plate according to the required size and bending the steel plate into the same shape as the arc-shaped ceramic block;

[0031] Step 3: Cutting of ultra-high molecular weight polyethylene fiber: placing the ultra-high molecular weight polyethylene fiber on a material cutting machine and cutting the required number of layers according to the set size;

[0032] Step 4, preparation of ultra-high molecular weight polyethylene fiber board: each layer of the ultra-high molecular weight polyethylene fiber cut in step 3 is evenly laid on the curing mold in sequence, and after the laying is completed, it is cured by using a high temperature and high pressure molding process;

[0033] Step 5: Use sandblasting to treat the surface of the steel plate in step 2, and then clean the surface of the steel plate;

[0034] Step 6, cleaning the surfaces of the arc-shaped ceramic block in step 1 and the ultra-high molecular weight polyethylene fiberboard in step 4 in turn;

[0035] Step seven, bonding the arc-shaped ceramic block, steel plate and ultra-high molecular weight polyethylene fiberboard processed in steps five and six: sticking adhesive film on both sides of the steel plate, laying them in the order of ultra-high molecular weight polyethylene fiberboard, steel plate and arc-shaped ceramic block, and curing them using an autoclave or vacuum-assisted molding process to complete the preparation of the bionic structural ceramic composite armor.

[0036] Specific embodiment 2: This embodiment is different from the specific embodiment 1 in that the high temperature and high pressure molding process described in step 4 is:

[0037] First, evenly apply a layer of release agent or evenly place a layer of release cloth on the inside of the curing mold, then place the composite material into the curing mold, and then place it into the flat vulcanizer, adjust the pressure head so that it contacts the mold, set the temperature to 100-120°C, the pressure to 10-15MPa, and the curing time to 1-2h; after the curing is completed, the pressure is released and the temperature is cooled to room temperature, and the high temperature and high pressure molding is completed.

[0038] The rest is the same as the first specific implementation mode.

[0039] Specific implementation method three: This implementation method is different from the specific implementation method one in that the high temperature and high pressure molding process described in step four is:

[0040] First, evenly apply a layer of release agent or evenly place a layer of release cloth on the inside of the curing mold, then place the composite material into the curing mold, and then place it into the flat vulcanizer, adjust the pressure head so that it contacts the mold, set the temperature to 120°C, the pressure to 15MPa, and the curing time to 2h; after the curing is completed, the pressure is released and the temperature is cooled to room temperature, and the high temperature and high pressure molding is completed.

[0041] The rest is the same as the first specific implementation mode.

[0042] Specific embodiment 4: This embodiment is different from the specific embodiment 1 in that the autoclave molding process described in step 7 is:

[0043] First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them and put them into an autoclave for hot pressing; the hot pressing parameters are: keep warm at 70-90℃ for 20-30min, increase the pressure to 0.05-0.15MPa; keep warm at 120-140℃ for 80-90min, increase the pressure to 0.2-0.3MPa, then cool down to room temperature, release the pressure, and complete the curing process.

[0044] The rest is the same as the first specific implementation mode.

[0045] Specific embodiment 5: This embodiment is different from the specific embodiment 1 in that the autoclave molding process described in step 7 is:

[0046] First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them and put them into an autoclave for hot pressing; the hot pressing parameters are: keep warm at 80℃ for 30min, and increase the pressure to 0.1MPa; keep warm at 130℃ for 90min, and increase the pressure to 0.3MPa, then cool down to room temperature, release the pressure, and complete the curing process.

[0047] The rest is the same as the first specific implementation mode.

[0048] Specific embodiment 6: This embodiment is different from the specific embodiment 1 in that the vacuum assisted molding process described in step 7 is:

[0049] First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them, and put them into an oven or on the surface of a heating table for heating. The heating parameters are: keep warm for 20 to 30 minutes at 70 to 90 degrees Celsius, keep warm for 80 to 90 minutes at 120 to 140 degrees Celsius, then cool down to room temperature, release the pressure, and the curing process is completed.

[0050] The rest is the same as the first specific implementation mode.

[0051] Specific embodiment 7: This embodiment is different from the specific embodiment 1 in that the vacuum assisted molding process described in step 7 is:

[0052] First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them, and put them into an oven or on the surface of a heating table for heating. The heating parameters are: keep warm for 30 minutes at 80°C and keep warm for 90 minutes at 130°C. Then cool them down to room temperature, release the pressure, and the curing process is completed.

[0053] The rest is the same as the first specific implementation mode.

[0054] Specific implementation method eight: This implementation method is different from specific implementation method one in that the molecular weight of the ultra-high molecular weight polyethylene fiber is 1 million to 5 million.

[0055] The rest is the same as the first specific implementation mode.

[0056] Specific embodiment 9: This embodiment is different from specific embodiment 1 in that: the ultra-high molecular weight polyethylene fiber is a non-woven fabric.

[0057] The rest is the same as the first specific implementation mode.

[0058] Specific embodiment ten: The difference between this embodiment and specific embodiment one is that: the hot pressure casting of ceramic powder and adhesive described in step one, the specific process is: after the cooked ceramic powder and adhesive are melted, they are injected into the mold by compressed gas, and after pressure maintaining and condensing, they can be demoulded to obtain a wax blank, and then the blank is dewaxed at high temperature to obtain a ceramic block blank.

[0059] The rest is the same as the first specific implementation mode.

[0060] The exemplary embodiments of the present invention and the description thereof are used to explain the present invention but are not intended to limit the present invention.

[0061] Example 1

[0062] The preparation method of a bionic structure ceramic composite armor of this embodiment is carried out according to the following steps:

[0063] 1) Preparation of arc-shaped ceramic blocks: Silicon carbide or boron carbide ceramic powder is formed into a green body, and then the green body is sintered into a ceramic block, and finally the ceramic block is cut into a desired size by wire cutting technology.

[0064] 2) Preparation of steel plate: a whole flat steel plate is cut into the required size, and the steel plate is bent into the same shape as the arc-shaped ceramic block by manual bending.

[0065] 3) Cutting of ultra-high molecular weight polyethylene fiber (UHMWPE): Place a whole piece of ultra-high molecular weight polyethylene fiber (UHMWPE) on the material cutting machine and cut the required number of layers according to the set size. The ultra-high molecular weight polyethylene fiber (UHMWPE) is Shengmao continuous wide width non-woven fabric series UD-ZT75.

[0066] 4) Preparation of ultra-high molecular weight polyethylene fiber (UHMWPE) board: first evenly apply a layer of release agent or evenly place a layer of release cloth on the inside of the curing mold, and then evenly lay each layer of ultra-high molecular weight polyethylene fiber (UHMWPE) on the curing mold in turn. After laying, combine the upper and lower molds, and then put them into the flat vulcanizer, adjust the pressure head so that it contacts the mold, set the temperature to 120°C, the pressure to 15MPa, and the curing time to 2 hours. After the curing time is over, the pressure is released and the temperature is cooled to room temperature, and the curing process is completed.

[0067] 5) The formed steel plate is surface treated by sandblasting, and then the residual dirt on the surface of the steel plate is cleaned with an organic solvent.

[0068] 6) Using an organic solvent, the surfaces of the arc-shaped ceramic block and the ultra-high molecular weight polyethylene (UHMWPE) plate are cleaned in turn.

[0069] 7) Bonding between arc-shaped ceramic blocks, steel plates and ultra-high molecular weight polyethylene (UHMWPE) plates: At room temperature, adhesive films are pasted on both sides of the steel plates, and the ultra-high molecular weight polyethylene (UHMWPE) plates, steel plates and arc-shaped ceramic blocks are laid and fixed in sequence; first, a layer of breathable felt is wrapped around the composite armor, and it is placed in a sealed bag, and after vacuuming, it is placed in an autoclave for hot pressing; the hot pressing parameters are: keep warm at 80°C for 30 minutes, and the pressure increases to 0.1MPa; keep warm at 130°C for 90 minutes, and the pressure increases to 0.3MPa, and then cool to room temperature, release the pressure, and the curing process is completed. Alternatively, a layer of breathable felt is wrapped around the composite armor, and it is placed in a sealed bag, and after vacuuming, the composite armor is placed in an oven or on the surface of a heating table for heating, and the heating parameters are: keep warm at 80°C for 30 minutes, keep warm at 130°C for 90 minutes, and then cool to room temperature, release the pressure, and the curing process is completed.

[0070] Figure 2 is a failure mode diagram of composite armor at different locations impacted by fragment load at different times; Figure 2 It can be seen that the composite armor of the present invention can guide the trajectory of fragment loads at different positions. Figure 3 The energy absorption curve of each material of the composite armor changes with the fragment incident time when the fragment incident speed is 800m / s. Figure 3 It can be seen that the composite armor of the present invention prepared by the autoclave molding process or the vacuum assisted molding process can give full play to the energy absorption effect of the ultra-high molecular weight polyethylene fiber and the ceramic material. Figure 4 It can be seen that the arc-shaped ceramic block of this embodiment has an arc angle of π / 2 and a thickness of 8 mm. Figure 5 is the maximum residual velocity of the fragment load under different arcs of the arc-shaped ceramic block; the arc range of the arc-shaped ceramic block is 0~π / 2. Figure 5 It can be seen that when the curvature of the arc-shaped ceramic block increases, the maximum residual velocity in the fragment load gradually decreases. Therefore, the curvature of the arc-shaped ceramic block described in this embodiment can most effectively reduce the residual velocity of the fragment load, thereby improving the anti-ballistic performance of the composite armor. Figure 6 The ballistic response comparison of the fragment load when impacting the composite armor of the present invention and the conventional planar composite armor of the same mass at the same distance from the armor, the time at this time is 0.05ms. Figure 6 It can be seen that when the fragment load impacts the traditional planar composite armor, the trajectory of the fragment load does not change and has almost penetrated the armor; however, when the fragment load impacts the composite armor of the present invention, the trajectory of the fragment load undergoes a significant tilt change and does not penetrate the armor. Therefore, the composite armor described in this embodiment can effectively change the trajectory of the fragment load, play a role in extending the fragment load, and thus improve the anti-ballistic performance of the composite armor.

Claims

1. A method for preparing a bionic structure ceramic composite armor, characterized in that It is carried out according to the following steps: Step 1, preparation of arc-shaped ceramic blocks: injecting powder and adhesive into an arc-shaped ceramic block forming mold, forming by hot die casting, and demolding after pressure holding and condensation; the arc of the arc-shaped ceramic block varies in the range of 0~π / 2; the powder is silicon carbide ceramic powder or boron carbide ceramic powder; Step 2: Preparation of steel plate: cutting the steel plate according to the required size and bending the steel plate into the same shape as the arc-shaped ceramic block; Step 3: Cutting of ultra-high molecular weight polyethylene fiber: placing the ultra-high molecular weight polyethylene fiber on a material cutting machine and cutting the required number of layers according to the set size; Step 4, preparation of ultra-high molecular weight polyethylene fiber board: each layer of the ultra-high molecular weight polyethylene fiber cut in step 3 is evenly laid on the curing mold in sequence, and after the laying is completed, it is cured by using a high temperature and high pressure molding process; Step 5: Use sandblasting to treat the surface of the steel plate in step 2, and then clean the surface of the steel plate; Step 6, cleaning the surfaces of the arc-shaped ceramic block in step 1 and the ultra-high molecular weight polyethylene fiberboard in step 4 in turn; Step 7, bonding the arc-shaped ceramic block, steel plate and ultra-high molecular weight polyethylene fiberboard processed in step 5 and step 6: pasting adhesive films on both sides of the steel plate, laying them in the order of ultra-high molecular weight polyethylene fiberboard, steel plate and arc-shaped ceramic block, and curing them by autoclave or vacuum assisted molding process, thus completing the preparation of the bionic structural ceramic composite armor; the bionic structural ceramic composite armor is a corrugated composite armor, and the curvature of the corrugated composite armor varies in the range of 0~π / 2; In step 1, the ceramic powder and the adhesive are hot-pressed and molded. The specific process is as follows: the cooked ceramic powder and the adhesive are melted and injected into the mold by compressed gas, and then demolded after pressure-maintaining condensation to obtain a wax blank, and then the blank is dewaxed at high temperature to obtain a ceramic block blank; The high temperature and high pressure forming process described in step 4 is: First, evenly apply a layer of release agent or evenly place a layer of release cloth on the inner side of the curing mold, then put the composite material into the curing mold, and then put it into the flat vulcanizer, adjust the pressure head so that it contacts the mold, set the temperature to 120 ° C, the pressure to 15 MPa, and the curing time to 2 h; after the curing is completed, the pressure is released and the temperature is cooled to room temperature, and the high temperature and high pressure molding is completed; The autoclave molding process in step seven is: First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them and put them into an autoclave for hot pressing; the hot pressing parameters are: keep warm at 70~90℃ for 20~30 min, increase the pressure to 0.05~0.15MPa; keep warm at 120~140℃ for 80~90 min, increase the pressure to 0.2~0.3MPa, then cool down to room temperature, release the pressure, and the curing process is completed; The vacuum assisted forming process described in step seven is: First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them, and put them into an oven or on the surface of a heating table for heating. The heating parameters are: keep warm at 70~90℃ for 20~30 min, keep warm at 120~140℃ for 80~90min, then cool down to room temperature, release the pressure, and the curing process is completed.

2. The method for preparing a bionic structure ceramic composite armor according to claim 1, characterized in that The high temperature and high pressure forming process described in step 4 is: First, evenly apply a layer of release agent or evenly place a layer of release cloth on the inside of the curing mold, then put the composite material into the curing mold, and then put it into the flat vulcanizer, adjust the pressure head so that it contacts the mold, set the temperature to 120 ° C, the pressure to 15 MPa, and the curing time to 2 h; after the curing is completed, the pressure is released and the temperature is cooled to room temperature, and the high temperature and high pressure molding is completed.

3. The method for preparing a bionic structure ceramic composite armor according to claim 1, characterized in that The autoclave molding process described in step seven is: First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them and put them into an autoclave for hot pressing; the hot pressing parameters are: keep warm at 80°C for 30 min, increase the pressure to 0.1MPa; keep warm at 130°C for 90 min, increase the pressure to 0.3MPa, then cool down to room temperature, release the pressure, and complete the curing process.

4. The method for preparing a bionic structure ceramic composite armor according to claim 1, characterized in that The vacuum assisted forming process described in step seven is: First, wrap a layer of breathable felt around the laid structural parts, put them into a sealed bag, evacuate them, and put them into an oven or on the surface of a heating table for heating. The heating parameters are: keep warm for 30 min at 80°C and keep warm for 90 min at 130°C. Then cool them down to room temperature, release the pressure, and the curing process is completed.

5. The method for preparing a bionic structure ceramic composite armor according to claim 1, characterized in that The molecular weight of the ultra-high molecular weight polyethylene fiber is 1 million to 5 million.

6. The method for preparing a bionic structural ceramic composite armor according to claim 1, characterized in that The ultra-high molecular weight polyethylene fiber is a non-weft cloth.

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