Detachable helmet with additional reinforcing module and preparation method of detachable helmet

Abstract

The invention discloses a detachable helmet with an additional reinforcing module and a preparation method of the detachable helmet. The reinforcing module and a helmet shell of the helmet are connected through a bonding layer. The reinforcing module is made of one or more of ultra-high molecular weight polyethylene non-woven cloth or woven cloth, aramid fiber woven cloth, carbon fiber prepreg cloth and PBO fiber woven cloth in a mixed weaving mode. The helmet shell is made of a structure formed by weaving one or more of ultra-high molecular weight polyethylene non-woven cloth, aramid fiber woven cloth, carbon fiber prepreg cloth and PBO fiber woven cloth in a mixed mode. According to the scheme, the helmet can effectively consume impact energy of a bullet body in the initial process of bullet target action with the strongest bullet penetration power, meanwhile, a bullet head is broken to reduce killing power, damage directly acting on a helmet shell of the helmet can be effectively weakened, more effective protection capacity is provided for the head, the manufacturing process is simple and convenient, modular design is adopted, and the manufacturing cost is low. And the detachable helmet with the required strength can be quickly obtained.

Description

Technical Field

[0001] This invention belongs to the field of reinforced equipment and materials, specifically a detachable helmet with an additional reinforced module and its preparation method. Background Technology

[0002] To improve protective capabilities and reduce helmet weight, new helmets, such as the IHPS and Virtus helmets, utilize lightweight ultra-high molecular weight polyethylene (UHMWPE) fiber as their ballistic material. The protective capabilities of these helmets are increasingly designed to withstand rifle bullets. UHMWPE fiber has a higher ballistic coefficient and lower density than aramid fiber, while current helmets in service in my country still use aramid as their primary ballistic material, making it impossible to simultaneously achieve the design requirements of lightweighting and improved protective performance. The protective capabilities of current helmets are gradually lagging behind the pace of technological advancements in weaponry designed for individual soldiers. Developing high-strength helmets capable of withstanding rifle bullet penetration is crucial for protecting the lives of our users.

[0003] To improve the protective capabilities of helmets while reducing their surface density to enhance their practical value, commonly used methods include the application of new ballistic fiber and ceramic materials, the design of ballistic structures, and the design of fiber layup structures. Specifically:

[0004] Patent CN 203657619U discloses a boron carbide-silicon carbide composite ceramic bulletproof helmet formed by slip casting. The helmet is formed in one piece, but due to the presence of the large curved surface of the helmet, the sintering process is complicated and the deformation of the complex irregular structure is large.

[0005] Patent CN 114001591A discloses a manufacturing process for a multi-layer composite bulletproof helmet. It uses a multi-layer fiber composite structure to fully utilize the blocking effect of fibers at different stages on bullets. At the same time, a carbon fiber support layer is used to reduce the indentation value. However, it cannot meet the requirements for protection against rifle bullets, and the overall weight is also too high.

[0006] Patent CN 116718076A discloses a method for preparing an aramid composite polyethylene helmet, which aims to reduce weight and production costs. However, it is mainly designed for protection against Type 54 pistol / Type 51 lead-core bullets and is insufficient for protection against rifle bullets.

[0007] Patent number CN 112428630A discloses a shell for a spliced ​​bulletproof helmet, but the splicing position is a weak area in the overall protection, and the molding process is also relatively complicated.

[0008] Based on the above technical analysis, currently available helmets suffer from problems such as insufficient lightweight design to meet wearing comfort requirements, inadequate protective capabilities, and complex molding methods. Summary of the Invention

[0009] To address the aforementioned problems, the present invention aims to provide a detachable helmet with an additional reinforcement module and its manufacturing method. Based on modular design principles, the helmet shell and reinforcement module are combined for a differentiated head protection solution. Without the reinforcement module, the helmet shell provides the same protective capability as existing bulletproof helmets. With the reinforcement module, the helmet as a whole can withstand rifle bullets. To achieve lightweighting, the present invention proposes to use a hybrid structure of one or more fiber fabrics, such as ultra-high molecular weight polyethylene nonwoven fabric, aramid woven fabric, carbon fiber prepreg fabric, and PBO fiber woven fabric, to meet the system's weight reduction requirements. By utilizing the differences in shear strength, tensile strength, and tensile deformation capacity of different fibers, the energy dissipation of the bullet at different penetration stages is maximized.

[0010] The specific technical solution for achieving the objective of this invention is as follows:

[0011] A detachable helmet with an additional reinforcement module includes the reinforcement module, an adhesive layer, and a helmet shell;

[0012] The reinforcement module and the helmet shell are connected by an adhesive layer;

[0013] The reinforcing module is made of one or more of the following materials: ultra-high molecular weight polyethylene nonwoven fabric or woven fabric, aramid woven fabric, carbon fiber prepreg fabric, PBO fiber woven fabric, and is formed by hot pressing.

[0014] The helmet shell is made of one or more of the following materials: ultra-high molecular weight polyethylene nonwoven fabric, aramid woven fabric, carbon fiber prepreg fabric, and PBO fiber woven fabric, and is formed by hot pressing.

[0015] Furthermore, the detachable helmet also includes an external coating and a paint layer;

[0016] The external coating material is polyurea, which is sprayed on the outer surface of the reinforcing module and the inner and outer surfaces of the helmet shell to enhance the helmet's impact resistance and penetration resistance.

[0017] The paint layer is sprayed onto the outside of the outer coating to improve the helmet's weather resistance.

[0018] The present invention also provides a method for manufacturing a detachable helmet with the above-mentioned additional reinforcement module, comprising the following steps:

[0019] Step 1: Prepare the enhancement module;

[0020] Step 2: Prepare the helmet shell;

[0021] Step 3: Post-process the prepared reinforcement module and helmet shell;

[0022] Step 4: Spray the outer coating and paint layer;

[0023] Step 5: Assemble the reinforcement module and helmet shell using the adhesive layer.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The detachable helmet with additional reinforcement modules and its manufacturing method provided in this solution feature a reinforcement module and helmet shell made of one or more of the following mixed-weave structures: ultra-high molecular weight polyethylene fiber, aramid fiber, poly(p-phenylene benzodioxazole) (PBO) fiber, and carbon fiber. Lightweighting is achieved through the selection and combination of lightweight materials. The reinforcement module and helmet shell are fitted together using Velcro or other methods, which facilitates modular combination to meet the application requirements of different combat scenarios.

[0026] On the other hand, during the possible penetration of the projectile, the reinforcement module effectively dissipates the projectile's impact energy during the initial stage of impact with the target, where the projectile's impact force is strongest. Simultaneously, it fragments the projectile to reduce its lethality, thus effectively mitigating damage to the helmet shell from direct impact and providing more effective head protection. When the projectile penetrates the reinforcement module, its kinetic energy decreases significantly, its penetration path changes, and the projectile becomes noticeably unstable. After penetrating the helmet shell, it experiences significant deceleration and ultimately terminates within the helmet shell.

[0027] The preparation process of this solution is simple, and the modular design allows for the rapid production of detachable helmets with the required strength.

[0028] The present invention will be further described below with reference to specific embodiments. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the detachable helmet structure with additional reinforcement modules according to the present invention.

[0030] Figure 2 This is a schematic diagram of the enhanced module structure of the present invention.

[0031] Figure 3 This is a schematic diagram of the helmet shell structure of the present invention.

[0032] Figure 4 This is a schematic diagram of the cutting pattern of the reinforcing module and the windmill-shaped template mold for the helmet shell of the present invention.

[0033] Figure 5 This is a schematic diagram of the cutting pattern of the reinforcing module and the petal-shaped template mold for the helmet shell of the present invention.

[0034] Figure 6 This is a schematic diagram of the cutting pattern of the reinforcing module and the helmet shell fan-shaped template mold of the present invention.

[0035] Figure 7 This is a cross-sectional fiber diagram of the reinforcement module of the present invention.

[0036] Figure 8 This is a schematic diagram of the cross-sectional fiber structure of the helmet shell of the present invention. Detailed Implementation

[0037] Example

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0041] Combination Figures 1 to 3 A detachable helmet with an additional reinforcement module includes a reinforcement module 1, an adhesive layer 2, a helmet shell 3, an outer coating 4, and a paint layer 5.

[0042] The reinforcing module 1 and the helmet shell 3 are connected by an adhesive layer 2;

[0043] The reinforcing module 1 is made of one or more of the following materials: ultra-high molecular weight polyethylene nonwoven fabric or woven fabric, aramid woven fabric, carbon fiber prepreg fabric, PBO fiber woven fabric, and is formed by hot pressing.

[0044] The helmet shell 3 is made of one or more of the following materials: ultra-high molecular weight polyethylene nonwoven fabric, aramid woven fabric, carbon fiber prepreg fabric, and PBO fiber woven fabric, and is formed by hot pressing.

[0045] The external coating 4 is made of polyurea and is sprayed on the outer surface of the reinforcing module 1 and the inner and outer surfaces of the helmet shell 3 to enhance the helmet's impact resistance and penetration resistance.

[0046] The paint layer 5 is sprayed on the outside of the outer coating 4 to improve the helmet's weather resistance.

[0047] The method for manufacturing the detachable helmet with additional reinforcement module of this application is described below with reference to specific embodiments.

[0048] Example 1

[0049] A method for manufacturing a detachable helmet with an additional reinforcement module includes the following steps:

[0050] Step 1: Prepare Enhancement Module 1:

[0051] Step 1-1: Cut the fabric pieces of the corresponding size according to one or more materials selected by the reinforcement module 1, and weigh them according to the areal density design to determine the number of layers.

[0052] For example, in this embodiment, the reinforcing module 1 is made of aramid fiber woven fabric and ultra-high molecular weight polyethylene fiber nonwoven fabric, and the size of the cut fabric piece is 200mm×200mm.

[0053] Among them, the areal density of aramid fiber woven fabric is 180 g / m². 2 ~200 g / m 2 The resin content of woven fabrics ranges from 5% to 15%; the surface density of non-woven fabrics is 135 g / m². 2 ~160 g / m 2 Between these values, the resin content of the non-woven fabric is between 11% and 13%; the number of layers for aramid woven fabric and ultra-high molecular weight polyethylene fiber non-woven fabric are 15 and 20, respectively.

[0054] Steps 1-2: Cut the selected material for reinforcement module 1 into windmill, petal, or fan shapes, such as... Figures 4 to 6 As shown, based on this cutting shape, non-overlapping layering can be achieved;

[0055] Steps 1-3: Place the cut reinforcing module 1 onto the hot press die for pre-pressing and shaping, such as... Figure 7 As shown;

[0056] Steps 1-4: Heating and curing the pre-compressed reinforced module 1; During the heating and curing process, it is necessary to maintain the temperature uniformity of each position of the hot press and use multi-stage heating to achieve curing. After curing, a rough sample of the reinforced module 1 is obtained.

[0057] In this embodiment, during the heating and curing process:

[0058] Preheat the hot press to 80°C at a rate of 3°C / min and hold for 10min.

[0059] The hot press device is heated again to 105℃ at a rate of 2℃ / min to remove the internal cavity gas.

[0060] Finally, heat the hot press to 125℃~135℃, adjust the pressure of the hot press to 18MPa~25MPa, hold the pressure for 25min~35min and then cool down.

[0061] After cooling to 65°C, turn on the hot press to release the pressure.

[0062] Step 2, Prepare the helmet shell 3:

[0063] Step 2-1: Cut the selected one or more materials for the helmet shell 3 into pieces of fabric of the appropriate size, and weigh them according to the surface density design to determine the number of layers.

[0064] In this embodiment, the helmet shell 3 is made of ultra-high molecular weight polyethylene fiber woven fabric, ultra-high molecular weight polyethylene fiber non-woven fabric, and carbon fiber prepreg fabric; the size of the cut fabric piece is 350mm×350mm.

[0065] Among them, the areal density of ultra-high molecular weight polyethylene fiber woven fabric is 180 g / m². 2 ~200 g / m 2 The resin content of the woven fabric is between 11% and 13%, and the areal density of the ultra-high molecular weight polyethylene fiber nonwoven fabric is 135 g / m². 2 ~160 g / m 2 The resin content of the non-woven fabric is between 11% and 13%; the areal density of the carbon fiber prepreg fabric is 125 g / cm³. 3 ~150g / cm 3 The resin content of carbon fiber woven fabric is between 5% and 15%; the number of layers of ultra-high molecular weight polyethylene fiber woven fabric, ultra-high molecular weight polyethylene fiber non-woven fabric and carbon fiber woven fabric are 1 layer, 52 layers and 2 layers respectively.

[0066] Step 2-2: Cut the selected material for the helmet shell 3 into a windmill shape, petal shape, or fan shape;

[0067] Steps 2-3: Place the cut helmet shell 3 onto the hot press die for pre-pressing and shaping, such as... Figure 8 As shown;

[0068] Steps 2-4: Heating and curing the pre-compressed helmet shell 3; During the heating and curing process, it is necessary to maintain the temperature uniformity of each position of the hot press and use multi-stage heating to achieve curing. After curing, a rough sample of the helmet shell 3 is obtained.

[0069] During the heating and curing process of the pre-compressed and shaped helmet shell 3:

[0070] Preheat the hot press to 80°C at a rate of 3°C / min and hold for 10min.

[0071] The hot press device is heated again to 105℃ at a rate of 2℃ / min to remove the internal cavity gas.

[0072] Finally, heat the hot press to 125℃~135℃, adjust the pressure of the hot press to 18MPa~25MPa, hold the pressure for 25min~35min and then cool down.

[0073] After cooling to 65°C, turn on the hot press to release the pressure.

[0074] Step 3: Post-processing of the prepared reinforcement module 1 and helmet shell 3:

[0075] The obtained rough samples of the reinforcement module 1 and helmet shell 3 are fixed on the positioning pin. The excess parts of the upper edge of the reinforcement module 1 and helmet shell 3 are removed by a three-dimensional laser cutting machine, and the burrs at the edge are polished smooth.

[0076] Rubber edging is wrapped around the edge of the helmet shell 3.

[0077] Step 4: Spray the outer coating 4 and paint layer 5;

[0078] The thickness of the outer coating 4 is 1mm to 1.5mm;

[0079] After the outer coating 4 has cured, paint layer 5 is then sprayed onto the reinforcing module 1 and the helmet shell 3.

[0080] Step 5: Assemble the reinforcement module 1 and the helmet shell 3 using adhesive layer 2, such as Velcro.

[0081] Example 2

[0082] A method for manufacturing a detachable helmet with an additional reinforcement module includes the following steps:

[0083] Step 1: Prepare Enhancement Module 1:

[0084] Step 1-1: Cut the fabric pieces of the corresponding size according to one or more materials selected by the reinforcement module 1, and weigh them according to the areal density design to determine the number of layers.

[0085] For example, in this embodiment, the reinforcing module 1 is made of aramid fiber woven fabric and ultra-high molecular weight polyethylene fiber nonwoven fabric, and the size of the cut fabric piece is 200mm×200mm.

[0086] Among them, the areal density of aramid fiber woven fabric is 180 g / m². 2 ~200 g / m 2 The resin content of woven fabrics ranges from 5% to 15%; the surface density of non-woven fabrics is 135 g / m². 2 ~160 g / m 2 Between these values, the resin content of the non-woven fabric is between 11% and 13%; the number of layers for aramid woven fabric and ultra-high molecular weight polyethylene fiber non-woven fabric are 12 and 25, respectively.

[0087] In other embodiments, the number of layers of aramid woven fabric and ultra-high molecular weight polyethylene fiber nonwoven fabric can also be 8 and 15 layers, or 5 and 20 layers, respectively.

[0088] Steps 1-2: Cut the selected material for reinforcement module 1 into windmill, petal, or fan shapes, such as... Figures 4 to 6 As shown, based on this cutting shape, non-overlapping layering can be achieved;

[0089] Steps 1-3: Place the cut reinforcing module 1 onto the hot press die for pre-pressing and shaping, such as... Figure 7 As shown;

[0090] Steps 1-4: Heating and curing the pre-compressed reinforced module 1; During the heating and curing process, it is necessary to maintain the temperature uniformity of each position of the hot press and use multi-stage heating to achieve curing. After curing, a rough sample of the reinforced module 1 is obtained.

[0091] In this embodiment, during the heating and curing process:

[0092] Preheat the hot press to 80°C at a rate of 3°C / min and hold for 10min.

[0093] The hot press device is heated again to 105℃ at a rate of 2℃ / min to remove the internal cavity gas.

[0094] Finally, heat the hot press to 125℃~135℃, adjust the pressure of the hot press to 18MPa~25MPa, hold the pressure for 25min~35min and then cool down.

[0095] After cooling to 65°C, turn on the hot press to release the pressure.

[0096] Step 2, Prepare the helmet shell 3:

[0097] Step 2-1: Cut the selected one or more materials for the helmet shell 3 into pieces of fabric of the appropriate size, and weigh them according to the surface density design to determine the number of layers.

[0098] In this embodiment, the helmet shell 3 is made of ultra-high molecular weight polyethylene fiber woven fabric, ultra-high molecular weight polyethylene fiber non-woven fabric, and carbon fiber prepreg fabric; the size of the cut fabric piece is 350mm×350mm.

[0099] Among them, the areal density of ultra-high molecular weight polyethylene fiber woven fabric is 180 g / m². 2 ~200 g / m 2 The resin content of the woven fabric is between 11% and 13%, and the areal density of the ultra-high molecular weight polyethylene fiber nonwoven fabric is 135 g / m². 2 ~160 g / m 2 The resin content of the non-woven fabric is between 11% and 13%; the areal density of the carbon fiber prepreg fabric is 125 g / cm³. 3 ~150g / cm 3 The resin content of carbon fiber woven fabric is between 5% and 15%; the number of layers of ultra-high molecular weight polyethylene fiber woven fabric, ultra-high molecular weight polyethylene fiber non-woven fabric and carbon fiber woven fabric are 1 layer, 52 layers and 2 layers respectively.

[0100] Step 2-2: Cut the selected material for the helmet shell 3 into a windmill shape, petal shape, or fan shape;

[0101] Steps 2-3: Place the cut helmet shell 3 onto the hot press die for pre-pressing and shaping, such as... Figure 8 As shown;

[0102] Steps 2-4: Heating and curing the pre-compressed helmet shell 3; During the heating and curing process, it is necessary to maintain the temperature uniformity of each position of the hot press and use multi-stage heating to achieve curing. After curing, a rough sample of the helmet shell 3 is obtained.

[0103] During the heating and curing process of the pre-compressed and shaped helmet shell 3:

[0104] Preheat the hot press to 80°C at a rate of 3°C / min and hold for 10min.

[0105] The hot press device is heated again to 105℃ at a rate of 2℃ / min to remove the internal cavity gas.

[0106] Finally, heat the hot press to 125℃~135℃, adjust the pressure of the hot press to 18MPa~25MPa, hold the pressure for 25min~35min and then cool down.

[0107] After cooling to 65°C, turn on the hot press to release the pressure.

[0108] Step 3: Post-processing of the prepared reinforcement module 1 and helmet shell 3:

[0109] The obtained rough samples of the reinforcement module 1 and helmet shell 3 are fixed on the positioning pin. The excess parts of the upper edge of the reinforcement module 1 and helmet shell 3 are removed by a three-dimensional laser cutting machine, and the burrs at the edge are polished smooth.

[0110] Rubber edging is wrapped around the edge of the helmet shell 3.

[0111] Step 4: Spray the outer coating 4 and paint layer 5;

[0112] The thickness of the outer coating 4 is 1mm to 1.5mm;

[0113] After the outer coating 4 has cured, paint layer 5 is then sprayed onto the reinforcing module 1 and the helmet shell 3.

[0114] Step 5: Assemble the reinforcement module 1 and the helmet shell 3 using adhesive layer 2, such as Velcro.

[0115] Based on the detachable helmet with reference additional reinforcement module prepared according to this scheme, the protective performance of the helmet in this embodiment is tested according to the "Safety Technical Performance Requirements for Bulletproof Helmets" GJB 5115A-2012. The helmet prepared according to the test can effectively block the penetration of M193 rifle bullets under the condition of additional reinforcement module, and the bullets do not cause penetrating damage to the bulletproof helmet.

[0116] The embodiments described above are merely one implementation method of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A detachable helmet with an additional reinforcement module, characterized in that, Includes reinforcement module (1), adhesive layer (2), helmet shell (3); The reinforcing module (1) and the helmet shell (3) are connected by an adhesive layer (2); The reinforcing module (1) is made of one or more of the following materials: ultra-high molecular weight polyethylene nonwoven fabric or woven fabric, aramid woven fabric, carbon fiber prepreg fabric, PBO fiber woven fabric, and is formed by hot pressing. The helmet shell (3) is made of one or more of the following materials: ultra-high molecular weight polyethylene nonwoven fabric, aramid woven fabric, carbon fiber prepreg fabric, and PBO fiber woven fabric, and is formed by hot pressing.

2. The detachable helmet with an additional reinforcement module according to claim 1, characterized in that, The detachable helmet also includes an external coating (4) and a paint layer (5); The external coating (4) is made of polyurea and is sprayed on the outer surface of the reinforcing module (1) and the inner and outer surfaces of the helmet shell (3) to enhance the helmet's impact resistance and penetration resistance. The paint layer (5) is sprayed on the outside of the outer coating (4) to improve the helmet's weather resistance.

3. A method for manufacturing a detachable helmet with an additional reinforcement module according to any one of claims 1-2, characterized in that, Includes the following steps: Step 1, Prepare the enhancement module (1); Step 2, prepare the helmet shell (3); Step 3: Post-process the prepared reinforcement module (1) and helmet shell (3); Step 4: Spray the outer coating (4) and paint layer (5); Step 5: Assemble the reinforcement module (1) and helmet shell (3) using the adhesive layer (2).

4. The method for manufacturing a detachable helmet with an additional reinforcement module according to claim 3, characterized in that, Step 1 includes: Step 1-1: According to the one or more materials selected by the reinforcement module (1), cut them into fabric pieces of the corresponding size, and weigh them according to the areal density design to determine the number of layers; Step 1-2: Cut the material selected for the determined reinforcement module (1) into a windmill shape, petal shape, or fan shape; Steps 1-3: Place the cut reinforcing module (1) on the hot press punch for pre-pressing and shaping; Steps 1-4: Heating and curing the pre-compressed reinforced module (1); During the heating and curing process, the temperature of each position of the hot press should be kept uniform, and multi-stage heating should be used to achieve curing. After curing, a rough sample of the reinforced module (1) is obtained.

5. The method for manufacturing a detachable helmet with an additional reinforcement module according to claim 4, characterized in that, The reinforcing module (1) is made of aramid fiber cloth and ultra-high molecular weight polyethylene fiber nonwoven cloth, and the size of the cut cloth piece is 200mm×200mm. During the heating and curing process of the pre-compressed reinforced module (1): Preheat the hot press to 80°C at a rate of 3°C / min and hold for 10min. The hot press device is heated again to 105℃ at a rate of 2℃ / min to remove the internal cavity gas. Finally, heat the hot press to 125℃~135℃, adjust the pressure of the hot press to 18MPa~25MPa, hold the pressure for 25min~35min and then cool down. After cooling to 65°C, turn on the hot press to release the pressure.

6. The method for manufacturing a detachable helmet with an additional reinforcement module according to claim 3, characterized in that, Step 2 includes: Step 2-1: According to the one or more materials selected for the helmet shell (3), cut them into pieces of cloth of the corresponding size, and weigh them according to the surface density design to determine the number of layers; Step 2-2: Cut the selected material for the helmet shell (3) into a windmill shape, petal shape, or fan shape; Steps 2-3: Place the cut helmet shell (3) on the hot press punch for pre-pressing and shaping; Steps 2-4: Heating and curing the pre-compressed helmet shell (3); During the heating and curing process, the temperature of each position of the hot press should be kept uniform, and multi-stage heating should be used to achieve curing. After curing, a rough sample of the helmet shell (3) is obtained.

7. The method for manufacturing a detachable helmet with an additional reinforcement module according to claim 6, characterized in that, The helmet shell (3) is made of ultra-high molecular weight polyethylene fiber woven fabric, ultra-high molecular weight polyethylene fiber non-woven fabric and carbon fiber prepreg fabric; the size of the cut fabric piece is 350mm×350mm. During the heating and curing process of the pre-compressed helmet shell (3): Preheat the hot press to 80°C at a rate of 3°C / min and hold for 10min. The hot press device is heated again to 105℃ at a rate of 2℃ / min to remove the internal cavity gas. Finally, heat the hot press to 125℃~135℃, adjust the pressure of the hot press to 18MPa~25MPa, hold the pressure for 25min~35min and then cool down. After cooling to 65°C, turn on the hot press to release the pressure.

8. The method for manufacturing a detachable helmet with an additional reinforcement module according to claim 3, characterized in that, The post-processing in step 3 includes: The rough samples of the reinforcement module (1) and helmet shell (3) were fixed on the positioning pin. The excess parts of the upper edge of the reinforcement module (1) and helmet shell (3) were removed by a three-dimensional laser cutting machine, and the burrs at the edge were polished smooth. Rubber edging is wrapped around the edge of the helmet shell (3).

9. The method for manufacturing a detachable helmet with an additional reinforcement module according to claim 3, characterized in that, The thickness of the external coating (4) in step 4 is 1mm to 1.5mm. After the outer coating (4) has cured, paint layer (5) is sprayed on the reinforcing module (1) and helmet shell (3).

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