A method of bonding a composite ballistic armor panel

Abstract

The application discloses a kind of composite bulletproof armor plate sticking process method, its procedure includes material preparation, paste and auxiliary tool pressure one sequence, paste and auxiliary tool pressure two sequence, paste and auxiliary tool pressure three sequence and auxiliary tool removal;The process combines the physical properties of composite bulletproof armor plate itself and the adhesive used for sticking, follows the operation tempo of whole vehicle production, puts the composite bulletproof armor plate, which is an assembly part in the general assembly workshop, in front of the painting workshop for operation, uses the drying oven in the normal process of the painting workshop to accelerate the curing of the adhesive, fully utilizes the existing resources of the painting workshop, and effectively saves the logistics transfer site resources from the existing painting workshop to the general assembly workshop;Without disturbing the existing general assembly workshop process layout, effectively avoids the waiting waste of needing to assemble other parts after the adhesive of the composite bulletproof armor plate is cured in the general assembly workshop, so that the composite bulletproof armor plate sticking is suitable for large-line production.

Description

Technical Field

[0001] This invention belongs to the field of bulletproof technology, and more specifically, relates to a bonding process for composite bulletproof armor plates. Background Technology

[0002] Bulletproof vehicles, as a form of security equipment, are widely used in situations requiring exceptional protection. Depending on customer requirements, further enhancements to the vehicle's protective capabilities, specifically ballistic protection, are needed. This necessitates adding a layer of composite bulletproof armor plating to the already protected body. Composite bulletproof armor plating can typically be attached to the exterior of the vehicle body via a hanging method, or fixed to the interior of the passenger compartment via screws or adhesive. If hanging, a frame for securing the armor plating must first be installed on the exterior, suitable only for specific vehicle models. If using mortise and tenon screws, additional mounting holes must be drilled in the composite bulletproof armor plating, and studs must be welded or additional mounting holes added at the bonding points in the passenger compartment. With adhesive, only adhesive is needed to directly attach the composite bulletproof armor plating to the interior of the passenger compartment.

[0003] The bonding of composite bulletproof armor plates requires a certain level of cleanliness on the vehicle body. The bonding surfaces of the composite bulletproof armor plates on painted car bodies may become dusty and dirty during transport and temporary storage, hindering the bonding process or necessitating secondary cleaning of the vehicle body, resulting in unnecessary operational waste. Furthermore, if assembly work is carried out outside the production line, the factory lacks sufficient indoor handling space, which is also detrimental to vehicle body handling (the vehicle body is on a transfer trolley, requiring a tractor to tow it for transport). Even with ample space, it is unsuitable for work inside the vehicle (the transfer trolley lacks a braking system, requiring access tools from outside, posing a significant safety risk). Most importantly, the bonding method of composite bulletproof armor plates is only suitable for small-batch, long-cycle, and low-requirement small-scale modification production. If the bonding of composite bulletproof armor plates is carried out directly on the assembly line of the final assembly workshop, the adhesive must be allowed to cure naturally for at least 2 hours before the cover parts can be assembled. Furthermore, the bandages and struts used for auxiliary fixing of the composite bulletproof armor plates inside the vehicle cannot be touched. This would completely disrupt the existing assembly process and layout of the final assembly workshop or cause production to be delayed, resulting in the production line stopping and unable to operate normally.

[0004] To meet the production cycle of the entire vehicle, a bonding process for the composite bulletproof armor plate suitable for mass production needs to be designed based on the physical properties of the composite bulletproof armor plate and the adhesive. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a bonding process for composite bulletproof armor plates. The process includes material preparation, bonding and pressure application using auxiliary tools (step one), bonding and pressure application using auxiliary tools (step two), bonding and pressure application using auxiliary tools (step three), and removal of auxiliary tools. This process leverages the physical properties of the composite bulletproof armor plate itself and the adhesive used for bonding, following the operational rhythm of vehicle production. It moves the composite bulletproof armor plate, an assembly component typically found in the final assembly workshop, to the painting workshop for pre-assembly. The drying ovens in the painting workshop's normal processes accelerate the curing of the adhesive, fully utilizing existing resources in the painting workshop and effectively saving on logistics transfer space between the painting and final assembly workshops. Without disrupting the existing final assembly workshop layout, this process effectively avoids the wasteful waiting time required for adhesive curing before assembling other components in the final assembly workshop, making the bonding of composite bulletproof armor plates suitable for large-scale production lines.

[0006] To achieve the above objectives, the present invention provides a method for bonding composite bulletproof armor plates, comprising the following steps:

[0007] S1. Material preparation: After the body-in-white undergoes electrophoresis and electrophoresis drying, glue application and glue application drying processes, the composite bulletproof armor plate panels (1) processed according to the shape of the internal cabin of the body are classified and stored in the workbench next to the puttying process line. At the same time, adhesives, related tools and accessories are placed, and the adhesive main agent and accelerator are put into the two-component glue gun.

[0008] S2. Adhesion and Auxiliary Pressure Application Sequence: This is carried out simultaneously with the first putty application process in the painting process. Using a two-component glue gun, the adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate. After the adhesive is evenly spread using a shovel-like metal tool, the composite bulletproof armor plate is adhered to the corresponding positions of the top cover and side panel in the area between the A-pillar and B-pillar of the vehicle. The composite bulletproof armor plate is pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up.

[0009] S3. Adhesion and Auxiliary Pressure Application Sequence: This is carried out simultaneously with the second putty application process in the painting process. Using a two-component glue gun, the adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate. After the adhesive is evenly spread using a shovel-like metal tool, the composite bulletproof armor plate is adhered to the corresponding positions of the top cover and side panel in the area between the B-pillar and C-pillar of the vehicle. The composite bulletproof armor plate is then pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up.

[0010] S4. Adhesion and Auxiliary Pressure Application: This process is carried out simultaneously with the putty inspection and cleaning process in the painting process. Using a two-component glue gun, the adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate. After the adhesive is evenly spread using a shovel-like metal tool, the composite bulletproof armor plate is adhered to the corresponding positions of the roof, side panels, and rear panel in the area behind the C-pillar of the vehicle. The composite bulletproof armor plate is then pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up.

[0011] S5. Auxiliary tool removal: This is carried out simultaneously with the manual sanding process in the intermediate coating stage of the painting process. After the vehicle body has been dried in the putty drying oven and the adhesive has been accelerated to cure, the bandages and / or struts used to apply pressure and fix the composite bulletproof armor plate inside the vehicle are removed and recycled during the manual sanding process in the intermediate coating stage. They are then redistributed to the previous pasting and auxiliary tool pressure application stages one to three. The composite bulletproof armor plate is then painted along with the vehicle body in subsequent painting processes, including intermediate coating and intermediate coating drying, topcoat and topcoat drying.

[0012] Furthermore, the operating temperature of the composite bulletproof armor plate must not exceed 100°C.

[0013] Furthermore, the drying temperature for the electrophoretic drying and adhesive coating drying processes is >100℃.

[0014] Furthermore, the drying temperature for the putty drying, intermediate coat drying, and topcoat drying processes is <100℃.

[0015] Furthermore, the adhesive, under an environment of room temperature 25°C and humidity 50%, initially cures after 25 minutes, reaches 70% to 80% curing degree after 2 hours, and is fully cured after 48 hours.

[0016] Furthermore, the adhesive cures more slowly when the ambient temperature is below 18°C ​​and more quickly when the ambient temperature is above 26°C.

[0017] Furthermore, when the adhesive is used, the main agent and the accelerator are mixed evenly in a 1:1 ratio of equal volumes.

[0018] Furthermore, when the adhesive is cured at room temperature of 23°C, the time consumed from the contact and thorough mixing of the adhesive main agent and the accelerator to the point where it can no longer be operated is 5 min to 10 min.

[0019] Furthermore, when the adhesive is cured at room temperature of 23°C, the time required for it to achieve the effect of bearing a weight of 1kg on a 25mm×12.5mm bonding surface is 15min to 25min.

[0020] Furthermore, the adhesive thickness at the bonding surface between the vehicle body and the composite bulletproof armor plate is <1mm.

[0021] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0022] 1. The bonding process of the present invention, combining the physical properties of the composite bulletproof armor plate itself and the adhesive used for bonding, follows the work rhythm of the whole vehicle production, makes full use of the existing resources of the painting workshop, and moves the composite bulletproof armor plate, which is an assembly component in the final assembly workshop, to the painting workshop for processing. This effectively saves the logistics transfer space resources between the existing painting workshop and the final assembly workshop, and completely avoids the waiting waste that occurs when bonding the composite bulletproof armor plate in the final assembly workshop without disrupting the existing process layout of the final assembly workshop, which requires the adhesive to cure before other parts can be assembled.

[0023] 2. The bonding process of the present invention, in terms of production cycle, directly decomposes the 2-hour natural curing time of the adhesive into the natural process of the coating workshop, while effectively avoiding a curing time of not less than 120m. 2 The centralized and continuous use of temporary land also reduces the investment in temporary and auxiliary tools by no less than 50,000 yuan, while also avoiding the operational risks of using special vehicles for line-side activities.

[0024] 3. The adhesive used in the bonding process of the present invention is an advanced, low-odor, low-VOC, low-halogen, environmentally friendly two-component acrylic adhesive, which has superior performance when bonding metal surfaces without a primer. Under the bonding process of the present invention, its fastening effect can be better exerted.

[0025] 4. The bonding process of this invention fully considers the inherent characteristics of composite bulletproof armor plates, has a reasonable design process, has no negative impact on the quality of composite bulletproof armor plates, and ensures the overall safety performance of the vehicle. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall process flow for bonding composite bulletproof armor plates according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the temperature-time curve of the curing environment of the composite bulletproof armor plate adhesive at room temperature in an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the bonding position of the composite bulletproof armor plate to the cockpit in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the bonding process for composite bulletproof armor plates according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the composite bulletproof armor plate bonding process according to an embodiment of the present invention.

[0031] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-composite bulletproof armor plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 1-5 As shown, this embodiment of the invention provides a bonding process for composite bulletproof armor plates. The specific steps include material preparation, bonding and auxiliary pressure application (step one), bonding and auxiliary pressure application (step two), bonding and auxiliary pressure application (step three), and auxiliary removal. This process combines the physical properties of the composite bulletproof armor plate itself and the adhesive used for bonding, following the operational rhythm of vehicle production. It moves the composite bulletproof armor plate, an assembly component in the final assembly workshop, to the painting workshop for processing. The drying oven in the normal painting workshop process accelerates the curing of the adhesive, making full use of existing resources in the painting workshop and effectively saving logistics transfer space between the painting workshop and the final assembly workshop. Without disrupting the existing final assembly workshop layout, it effectively avoids the waste of waiting for the adhesive to cure before assembling other components in the final assembly workshop, making the bonding of composite bulletproof armor plates suitable for large-scale production lines.

[0034] like Figure 1 As shown, the traditional coating process includes electrophoresis and electrophoresis drying, adhesive application and adhesive drying, putty application and putty drying, intermediate coat and intermediate coat drying, and topcoat and topcoat drying.

[0035] Prior to the painting process, the body-in-white transferred from the welding process requires cleaning and surface treatment, including: removing oil stains with hot alkaline solution and / or organic solvents; sanding the fiberglass with 320-400 grit sandpaper, then cleaning away the fiberglass surface release agent with organic solvents; wiping the yellow rust on the body surface with a cleaning solution prepared with phosphoric acid to ensure good adhesion between the coating and the body surface; repairing machining defects on the body using mechanical methods to achieve the surface roughness required for painting; and cleaning the surfaces of metal parts. Afterwards, appropriate chemical methods can be used to further treat the surface to improve the adhesion and corrosion resistance of the paint film, and to enhance the bonding force between the paint film and the substrate. Phosphating treatment methods include overall spraying and overall immersion. It is applied as a primer before the electrophoretic coating process to improve the adhesion and corrosion resistance of the paint film layer. For example, a thin-film zinc salt rapid phosphating treatment can be used, with a phosphating film quality of 1-3 g / m, a film thickness of 1-2 μm, and a crystal particle size of 1-10 μm. Phosphating can be carried out at a low temperature of 25-35℃ or a medium temperature of 50-70℃.

[0036] Preferably, the bonding of the composite bulletproof armor plate requires a certain level of cleanliness of the vehicle body, and the bonding process is placed after the cleaning and surface treatment processes.

[0037] The electrophoresis and electrophoretic drying processes involve immersing the car body completely in a tank filled with a low-concentration electrophoretic coating, using it as the anode (or cathode). A corresponding cathode (or anode) is also placed in the tank. After a period of direct current application, a uniform, fine, and water-insoluble coating film is deposited on the surface of the car body, which serves as the anode (or cathode). This film exhibits excellent corrosion resistance, rust prevention, oil resistance, and chemical resistance. After the electrophoresis process, the car body needs to be dried under the following conditions: temperature > 100℃, time > 30 minutes.

[0038] The process of applying and drying adhesive involves filling weld seams, overlaps, and holes and gaps directly connecting the interior and exterior of the vehicle body with sealant in the adhesive application process. This ensures the vehicle body's airtightness, preventing harmful substances such as water, air, dust, and noise from entering the vehicle, thus improving the overall vehicle lifespan, reliability, and NVH performance. PVC anti-stone chip coating is applied to the underside of the floor and the front and rear wheel arches to prevent damage from stones during driving. It also provides some anti-corrosion, waterproofing, and sealing properties. Wax is applied to the cavities at the skid fixing points, covering the inner surface of the sheet metal within the cavity to ensure corrosion resistance and prevent direct contact between water, air, and dust, thereby improving the overall vehicle's corrosion resistance. After the adhesive application process, the vehicle body must be dried under the following conditions: temperature > 100℃, time > 30 minutes.

[0039] Preferably, the key step in the manufacturing process of composite bulletproof armor plates is to place the composite preform into the press mold, heat it to 110℃-130℃ and keep it at that temperature and pressure for 20 minutes, then keep it under pressure and cool it to below 100℃ before opening the mold and removing the plate. Finally, the plate is placed horizontally and allowed to cool naturally to room temperature before being finally formed.

[0040] Preferably, since operating temperatures exceeding 100°C can affect the performance of composite bulletproof armor plates, the bonding process is placed after the adhesive application and drying process.

[0041] The putty application and drying process involves applying the putty on a completely dry primer layer. The putty used is atomic filler, which is red or light yellow. The putty can be applied using a back-and-forth application method, a one-sided application method, or local patching. When the thickness of a single application exceeds 0.5mm, a large-area putty application method can be used, which easily creates a smooth, large-area surface. Multiple putty applications, starting with thicker layers and then thinner layers, can enhance the strength of the putty layer and further improve its smoothness. After the putty application process, the car body needs to be dried under the following conditions: temperature <100℃, time >10 minutes.

[0042] The intermediate coat and its drying process involve spraying the vehicle body with electrostatic or air spraying. Two coats are applied continuously, wet-on-wet, with a working viscosity of 18-24s and an interval of 5-10 minutes between each coat. After spraying, the coating is flash-dried for 5-10 minutes before being placed in the drying oven. The dry film thickness of the intermediate coat is 40-50 μm. The intermediate coat process is between the primer and topcoat processes. The paint used in the intermediate coat has a base content between that of the primer and topcoat, and the coating film is in a glossy or semi-gloss form. It can improve the stone chip resistance and adhesion to the primer, improve the smoothness and evenness of the surface of the coated object, and enhance the fullness and brightness of the topcoat. After the intermediate coat process, the vehicle body needs to be dried under the following conditions: temperature <100℃, time >30 minutes.

[0043] The topcoat and topcoat drying process involves applying the topcoat evenly to the vehicle body using electrostatic spraying or air spraying at a pressure of 0.4–0.5 MPa. The topcoat is applied first to the roof, then the engine hood, then the rear hood, and finally the sides. This prevents paint mist from splashing onto the already applied paint film and damaging it. Areas that do not require painting are sealed with masking paper, tape, or a masking cover. The topcoat process is the final painting step in the vehicle body painting operation, forming the outermost coating that directly affects the vehicle's appearance and abrasion resistance. After the topcoat process, the vehicle body must be dried under the following conditions: temperature < 100℃, time > 30 minutes.

[0044] like Figure 2As shown, the adhesive used in this bonding process is an advanced, low-odor, low-VOC, low-halogen, environmentally friendly two-component acrylic adhesive, exhibiting superior performance in primerless bonding of metal surfaces. When the adhesive cures at room temperature (23°C), the working time is 5-10 minutes, and the clamping time is 15-25 minutes. Specifically, the working time refers to the time consumed from the contact and thorough mixing of the adhesive's main component and accelerator until no further action is possible; the clamping time is the time required to achieve a 1kg weight-bearing capacity on a 25mm × 12.5mm bonding surface. At room temperature (25°C) and 50% humidity, the adhesive initially cures after approximately 25 minutes, reaches 70%-80% curing after 2 hours, and is fully cured after 48 hours. The curing speed slows down when the ambient temperature is below 18°C ​​and accelerates when the ambient temperature is above 26°C.

[0045] like Figure 1-5 As shown, based on the inherent physical properties of the composite bulletproof armor plate and the adhesive, and following the production cycle of the entire vehicle and the drying temperature of the drying process in the painting workshop, the composite bulletproof armor plate is bonded after the body-in-white is removed from the adhesive drying oven. This means the bonding of the composite bulletproof armor plate is performed simultaneously with the puttying process and the exterior puttying. Subsequent putty drying, intermediate coat drying, and topcoat drying processes accelerate the curing of the adhesive. Therefore, the time wasted waiting time required for the adhesive to cure at room temperature is decomposed into necessary steps, effectively avoiding a delay of at least 120m. 2 The centralized and continuous use of temporary land also reduces the investment in temporary and auxiliary tools by no less than 50,000 yuan, while also avoiding the operational risks of using special vehicles for line-side activities.

[0046] Specifically, the bonding process includes the following steps:

[0047] S1. Material preparation: After the body-in-white undergoes electrophoresis and electrophoresis drying, glue application and glue application drying processes, the composite bulletproof armor plate panels (1) processed according to the shape of the internal cabin of the body are classified and stored in the workbench next to the puttying process line. At the same time, adhesives, related tools and accessories are placed, and the adhesive main agent and accelerator are put into the two-component glue gun.

[0048] S2. Adhesion and Auxiliary Pressure Application Sequence: This is carried out simultaneously with the first putty application process in the painting process. Using a two-component glue gun, the adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate 1. After the adhesive is evenly applied using a shovel-like metal tool, the composite bulletproof armor plate 1 is adhered to the corresponding positions of the top cover and side panel in the area between the A-pillar and B-pillar of the vehicle. The composite bulletproof armor plate 1 is pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up.

[0049] S3. Adhesion and Auxiliary Pressure Application Sequence: This is carried out simultaneously with the second putty application process in the painting process. Using a two-component glue gun, the adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate 1. After the adhesive is evenly spread using a shovel-like metal tool, the composite bulletproof armor plate 1 is adhered to the corresponding positions of the top cover and side panel in the area between the B-pillar and C-pillar of the vehicle. The composite bulletproof armor plate 1 is pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up.

[0050] S4. The three-step process of pasting and applying pressure with auxiliary tools: The process is carried out simultaneously with the putty inspection and cleaning process of the painting process. The adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate 1 using a two-component glue gun. After the adhesive is evenly spread using a shovel-like metal tool, the composite bulletproof armor plate 1 is pasted onto the corresponding positions of the roof, side panel and rear panel in the area behind the C-pillar of the vehicle. The composite bulletproof armor plate 1 is pre-pressed and fixed using bandages and / or support rods and the excess adhesive is cleaned up.

[0051] S5. Auxiliary tool removal: This is carried out simultaneously with the manual sanding process in the intermediate coating stage of the painting process. After the vehicle body has been dried in the putty drying oven and the adhesive has been accelerated to cure, the bandages and / or struts used to apply pressure and fix the composite bulletproof armor plate inside the vehicle are removed and recycled in the manual sanding process of the intermediate coating stage. They are then redistributed to the previous pasting and auxiliary tool pressure application stages one to three. The composite bulletproof armor plate 1 is then painted along with the vehicle body in subsequent painting processes, including intermediate coating and intermediate coating drying, topcoat and topcoat drying.

[0052] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A bonding process for composite bulletproof armor plates, characterized in that, Includes the following steps: S1. Material preparation: After the body-in-white undergoes electrophoresis and electrophoresis drying, glue application and glue application drying processes, the composite bulletproof armor plate panels (1) processed according to the shape of the internal cabin of the body are classified and stored in the workbench next to the puttying process line. At the same time, adhesives, related tools and accessories are placed, and the adhesive main agent and accelerator are put into the two-component glue gun. S2, Adhesion and Auxiliary Pressure Sequence: Simultaneously with the first putty application process in the painting process, the adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate (1) using a two-component glue gun, and the adhesive is evenly applied using a shovel-like metal tool. The composite bulletproof armor plate (1) is then adhered to the corresponding positions of the top cover and side panel in the area between the A-pillar and B-pillar of the vehicle. The composite bulletproof armor plate (1) is pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up. S3, Adhesion and Auxiliary Pressure Application Sequence: The second putty application process is carried out simultaneously with the painting process. The adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate (1) using a two-component glue gun. After the adhesive is evenly applied using a shovel-like metal tool, the composite bulletproof armor plate (1) is adhered to the corresponding positions of the top cover and side panel in the area between the B-pillar and C-pillar of the vehicle. The composite bulletproof armor plate (1) is pre-pressed and fixed using bandages and / or support rods, and excess adhesive is cleaned up. S4. The three-step process of pasting and applying pressure with auxiliary tools: The process is carried out simultaneously with the putty inspection and cleaning process of the painting process. The adhesive is squeezed onto the bonding surface of the composite bulletproof armor plate (1) using a two-component glue gun. After the adhesive is evenly applied using a shovel-like metal tool, the composite bulletproof armor plate (1) is pasted onto the corresponding positions of the top cover, side panel and rear panel in the area behind the C-pillar of the vehicle. The composite bulletproof armor plate (1) is pre-pressed and fixed using bandages and / or support rods and the excess adhesive is cleaned up. S5, Auxiliary tool removal: The manual sanding process of the intermediate coating stage of the painting process is carried out simultaneously. After the body is dried in the putty drying oven and the adhesive is accelerated to cure, the bandages and / or struts used to apply pressure to fix the composite bulletproof armor plate in the manual sanding process of the intermediate coating stage are removed and recycled, and then reassigned to the previous pasting and auxiliary tool pressure first to third stages. The composite bulletproof armor plate (1) is painted with the body in subsequent painting processes, including intermediate coating and intermediate coating drying, topcoat and topcoat drying.

2. The bonding process method for a composite bulletproof armor plate according to claim 1, characterized in that, The operating temperature of the composite bulletproof armor plate (1) must not exceed 100°C.

3. The bonding process method for a composite bulletproof armor plate according to any one of claims 1, characterized in that, The drying temperature for the electrophoresis drying and coating drying processes is >100℃.

4. The bonding process method for a composite bulletproof armor plate according to any one of claims 1, characterized in that, The drying temperature for the putty drying, intermediate coat drying, and topcoat drying processes is <100℃.

5. A bonding process for a composite bulletproof armor plate according to any one of claims 1-4, characterized in that, The adhesive initially cures after 25 minutes at room temperature (25°C) and humidity (50%), reaches 70%–80% curing after 2 hours, and is fully cured after 48 hours.

6. A bonding process for a composite bulletproof armor plate according to any one of claims 1-4, characterized in that, The adhesive cures more slowly when the ambient temperature is below 18°C ​​and more quickly when the ambient temperature is above 26°C.

7. The bonding process method for a composite bulletproof armor plate according to claim 5, characterized in that, When using the adhesive, the main agent and the accelerator are mixed evenly in a 1:1 ratio of equal volumes.

8. The bonding process method for a composite bulletproof armor plate according to claim 7, characterized in that, When the adhesive is cured at room temperature of 23°C, the time from the contact and thorough mixing of the adhesive main agent and the accelerator to the point where it can no longer be operated is 5 to 10 minutes.

9. The bonding process method for a composite bulletproof armor plate according to claim 8, characterized in that, When the adhesive is cured at room temperature of 23°C, the time required for it to achieve the effect of bearing a weight of 1kg on a 25mm×12.5mm bonding surface is 15min to 25min.

10. The bonding process method for a composite bulletproof armor plate according to claim 1, characterized in that, The adhesive thickness of the bonding surface between the vehicle body and the composite bulletproof armor plate (1) is <1mm.

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