Inner cavity cross beam silica gel structure and preparation process thereof

Abstract

The invention relates to the technical field of metal surface treatment, in particular to an inner cavity cross beam silica gel structure and a preparation process thereof. The method comprises the following steps: obtaining an environment-friendly coating material, and optimizing the dispersity of the material; according to surface treatment requirements, aluminum alloy surface pretreatment process parameters are obtained, and the aluminum alloy surface is pretreated; preparing a silica gel composite coating according to coating performance requirements, and spraying the silica gel composite coating on the surface of the aluminum alloy; the thickness of the coating is detected and adjusted on line, spraying parameters are adjusted in real time, and the quality control requirement of the coating is ensured; by the adoption of the mode, the corrosion resistance, adhesive force and attractiveness of the aluminum alloy battery box inner cavity cross beam are remarkably improved, and the requirements of the industry for environmental protection, functionality and attractiveness can be met.

Description

Technical Field

[0001] This invention relates to the field of metal surface treatment technology, and in particular to a silicone structure for an inner cavity crossbeam and its preparation process. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the battery box, as the core component supporting the power battery, directly affects the vehicle's safety, driving range, and service life. Aluminum alloy housings, with their advantages of lightweight, corrosion resistance, and ease of forming, have become the mainstream material for battery boxes. However, the long-term exposure of battery boxes to complex environments (high humidity, salt spray, vibration, etc.) and insufficient durability of surface treatment processes can lead to corrosion, leakage, and even fire risks.

[0003] Currently, domestic processes mainly involve anodizing, phosphating, and powder coating, but these have problems such as thin film (insufficient corrosion resistance), high energy consumption (e.g., high-temperature baking), and poor environmental performance (containing hexavalent chromium and heavy metals). The hidden technology of composite processes: domestic composite processes mostly adopt multi-layer spraying or simple superposition structures, which have weak interfacial bonding and are prone to delamination and peeling.

[0004] In summary, traditional processes suffer from high energy consumption, significant pollution, insufficient adhesion, and poor concealment of composite processes, making it difficult to meet the industry's demands for environmental friendliness, functionality, and aesthetics. Summary of the Invention

[0005] The purpose of this invention is to provide an inner cavity crossbeam silicone structure and its preparation process, aiming to solve the technical problems of high energy consumption, high pollution, insufficient adhesion and poor concealment of composite processes in existing traditional processes, which make it difficult to meet the industry's requirements for environmental protection, functionality and aesthetics.

[0006] To achieve the above objectives, the present invention employs a silicone preparation process for an inner cavity crossbeam, comprising the following steps: Obtain environmentally friendly coating materials and optimize material dispersibility; Based on the surface treatment requirements, obtain the surface pretreatment process parameters for aluminum alloys and perform surface pretreatment on the aluminum alloys. Based on the coating performance requirements, a silicone composite coating was prepared and then sprayed onto the aluminum alloy surface. The coating thickness is monitored and adjusted online, and the spraying parameters are adjusted in real time to ensure the coating quality control requirements are met.

[0007] First, environmentally friendly coating materials are obtained and their dispersibility is optimized. Then, based on the surface treatment requirements, the pretreatment process parameters for the aluminum alloy surface are obtained, and the aluminum alloy surface is pretreated. According to the coating performance requirements, a silicone composite coating is prepared and sprayed onto the aluminum alloy surface. At the same time, the coating thickness is monitored and adjusted online, and the spraying parameters are adjusted in real time to ensure the coating quality control requirements are met.

[0008] In the steps of obtaining environmentally friendly coating materials and optimizing material dispersibility: A waterborne epoxy resin / graphene composite coating was prepared, and the graphene dispersion was optimized through molecular dynamics simulation to ensure the coating density. Nano-silane coupling agents were prepared for subsequent surface modification of aluminum alloys.

[0009] Among them, in the step of obtaining the aluminum alloy surface pretreatment process parameters according to the surface treatment requirements, and performing surface pretreatment on the aluminum alloy: Low-temperature plasma cleaning equipment is used to clean the aluminum alloy surface, remove the oxide film, and improve the surface roughness; The surface of the cleaned aluminum alloy was modified using a nano-silane coupling agent.

[0010] In the step of using low-temperature plasma cleaning equipment to clean the aluminum alloy surface, remove the oxide film, and improve the surface roughness: The power was set to 100~300W, the gas flow ratio Ar / O2=4:1, and the surface roughness was improved to Ra≤0.05μm.

[0011] In the step of preparing a silicone composite coating according to the coating performance requirements and spraying the silicone composite coating onto the aluminum alloy surface: A nano-ceramic layer is deposited on the surface of an aluminum alloy using magnetron sputtering technology to form an underlayer coating. An ultrasonic atomization spraying technology is used to uniformly spray a water-based epoxy resin / graphene composite coating onto a nano-ceramic layer to form an intermediate layer. A top coating is prepared, and an aqueous resin layer is cured on the intermediate coating using UV curing technology.

[0012] In the step of preparing a silicone composite coating according to the coating performance requirements and spraying the silicone composite coating onto the aluminum alloy surface: The thickness of the nano-ceramic layer is controlled at 50~100nm, and the thickness of the water-based resin layer is controlled at 50~80μm.

[0013] Among the steps, online detection and adjustment of coating thickness, and real-time adjustment of spraying parameters are conducted to ensure coating quality control requirements are met. Construct a machine vision-based online coating thickness detection system to monitor coating thickness in real time; By combining AI algorithms, the spraying parameters are adjusted in real time based on the coating thickness detection results to ensure that the coating thickness is uniform and consistent.

[0014] In the step of combining AI algorithms to adjust spraying parameters in real time based on coating thickness detection results to ensure uniform coating thickness: Spraying parameters include pressure, temperature, and speed.

[0015] The present invention also provides an inner cavity crossbeam silicone structure, including crossbeam silicone, wherein the crossbeam silicone has grooves.

[0016] This invention discloses an internal cavity crossbeam silicone structure and its preparation process. First, an environmentally friendly coating material is obtained, and its dispersibility is optimized to improve the overall performance and density of the coating. Then, according to the stringent requirements for aluminum alloy surface treatment, pretreatment process parameters for the aluminum alloy surface are obtained. The aluminum alloy surface is pretreated, and a silicone composite coating is prepared according to the coating performance requirements. This silicone composite coating is then sprayed onto the aluminum alloy surface, forming a "rigid-flexible" composite structure. This effectively improves the coating's corrosion resistance, adhesion, and aesthetics. Simultaneously, the coating thickness is monitored and adjusted online, and spraying parameters are adjusted in real time to ensure the uniformity and consistency of the coating thickness, thereby meeting the high requirements for coating quality control. Using the above method, the corrosion resistance, adhesion, and aesthetics of the aluminum alloy battery box internal cavity crossbeam are significantly improved, meeting the industry's needs for environmental protection, functionality, and aesthetics. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart of the process for preparing the silicone inner beam of the present invention.

[0019] Figure 2 This is a flowchart of the steps in S100 of the silicone preparation process for the inner cavity beam of the present invention.

[0020] Figure 3 This is a flowchart of step S200 in the silicone preparation process of the inner cavity beam of the present invention.

[0021] Figure 4 This is a flowchart of step S300 in the silicone preparation process of the inner cavity beam of the present invention.

[0022] Figure 5 This is a flowchart of step S400 in the silicone preparation process of the inner cavity beam of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of Embodiment 1 of the silicone structure of the inner cavity beam of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the silicone structure of the inner cavity beam of the present invention.

[0025] Figure 8 This is a schematic diagram of the structure of Embodiment 3 of the silicone structure of the inner cavity beam of the present invention.

[0026] 501 - Silicone for crossbeams, 502 - Groove. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0029] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0031] Please see Figures 1-5 , Figure 1 This is a flowchart illustrating the steps of the silicone preparation process for the inner cavity beam of the present invention. Figure 2 This is a flowchart of steps S100 of the present invention. Figure 3 This is a flowchart of steps S200 of the present invention. Figure 4 This is a flowchart of steps S300 of the present invention. Figure 5This is a flowchart of steps S400 of the present invention; This invention provides a process for preparing silicone for an inner cavity crossbeam, comprising the following steps: S100: Obtain environmentally friendly coating materials and optimize material dispersion.

[0032] In this embodiment, an environmentally friendly coating material is obtained, and its dispersibility is optimized. The specific process is as follows: S101: Prepare an aqueous epoxy resin / graphene composite coating, optimize the graphene dispersion through molecular dynamics simulation, and ensure the coating density; S102: Prepare nano-silane coupling agents for subsequent aluminum alloy surface modification.

[0033] In the above process, an aqueous epoxy resin / graphene composite coating is first prepared. This coating combines the environmentally friendly characteristics of aqueous epoxy resin with the high conductivity and high strength of graphene. The dispersion of graphene in aqueous epoxy resin is optimized by molecular dynamics simulation technology to ensure that graphene nanosheets are uniformly distributed in the coating, thereby improving the density and overall performance of the coating. At the same time, a nano-silane coupling agent is prepared for subsequent modification treatment of aluminum alloy surface to enhance the interfacial bonding between the coating and the substrate.

[0034] S200: Based on the surface treatment requirements, obtain the surface pretreatment process parameters for aluminum alloys and perform surface pretreatment on the aluminum alloys.

[0035] In this embodiment, based on the surface treatment requirements, the pretreatment process parameters for the aluminum alloy surface are obtained, and the aluminum alloy surface is pretreated. The specific process is as follows: S201: Use low-temperature plasma cleaning equipment with a power setting of 100~300W and a gas flow ratio of Ar / O2=4:1 to clean the aluminum alloy surface, remove the oxide film, and improve the surface roughness to Ra≤0.05μm; S202: Modification treatment of the cleaned aluminum alloy surface using nano-silane coupling agent.

[0036] In the above process, a low-temperature plasma cleaning device was used with a power of 100~300W and a gas flow ratio of Ar / O2=4:1 to deeply clean the aluminum alloy surface, effectively removing oxide film and oil stains, while improving the surface roughness to Ra≤0.05μm, providing a good foundation for subsequent coating deposition. Then, a nano-silane coupling agent was used to modify the cleaned aluminum alloy surface. Through chemical bonding, an organosilane film was formed on the aluminum alloy surface, which significantly enhanced the interfacial bonding strength between the coating and the substrate.

[0037] S300: Prepare a silicone composite coating according to the coating performance requirements, and spray the silicone composite coating onto the aluminum alloy surface.

[0038] In this embodiment, a silicone composite coating is prepared according to the coating performance requirements, and the silicone composite coating is sprayed onto the aluminum alloy surface. The specific process is as follows: S301: A nano-ceramic layer is deposited on the surface of an aluminum alloy using magnetron sputtering technology, with a thickness controlled at 50~100nm, to form the bottom coating. S302: Using ultrasonic atomization spraying technology, a water-based epoxy resin / graphene composite coating is uniformly sprayed onto the nano-ceramic layer to form an intermediate layer. S303: Prepare the top coating layer, and cure a water-based resin layer on the intermediate coating layer by UV curing technology, with the thickness controlled at 50~80μm.

[0039] In the above process, a nano-ceramic layer with a thickness of 50-100 nm is first deposited on the aluminum alloy surface using magnetron sputtering technology to form the bottom layer coating. The nano-ceramic layer has high hardness and wear resistance, which can effectively improve the overall protective capability of the coating. Then, an ultrasonic atomization spraying technology is used to uniformly spray a water-based epoxy resin / graphene composite coating onto the nano-ceramic layer to form an intermediate layer. This coating combines the adhesion of water-based epoxy resin with the conductivity and high strength of graphene, further enhancing the adhesion and corrosion resistance of the coating. Subsequently, a water-based resin layer with a thickness of 50-80 μm is cured on the intermediate layer coating using UV curing technology. The UV-cured water-based resin layer has the characteristics of rapid curing and environmental protection without pollution, and can form a dense and smooth protective film, improving the overall performance and aesthetics of the coating.

[0040] S400: Performs online detection and adjustment of coating thickness, and adjusts spraying parameters in real time to ensure coating quality control requirements.

[0041] In this embodiment, the coating thickness is detected and adjusted online, and the spraying parameters are adjusted in real time to ensure the coating quality control requirements are met. The specific process is as follows: S401: Construct an online coating thickness detection system based on machine vision to monitor coating thickness in real time; S402: Combining AI algorithms, the spraying parameters are adjusted in real time based on the coating thickness detection results to ensure uniform coating thickness.

[0042] In the above process, a machine vision-based online coating thickness detection system is constructed. High-precision cameras and image processing algorithms are used to monitor the coating thickness in real time to ensure that the coating thickness is uniform. Combined with AI algorithms (LSTM neural network), the spraying parameters are adjusted in real time according to the coating thickness detection results to ensure that the coating thickness is uniform.

[0043] Example 1, please refer to Figure 6 , Figure 6 This is a schematic diagram of the structure of Embodiment 1 of the silicone structure of the inner cavity beam of the present invention; The present invention also provides an inner cavity crossbeam silicone structure, including a crossbeam silicone 501, wherein the crossbeam silicone 501 has a groove 502.

[0044] In this embodiment, the inner cavity of the groove 502 and the two end faces of the crossbeam silicone 501 shall not have burrs or flash, the product surface shall not have obvious parting lines, the concealed parting position shall not be cracked, the concealed parting position shall not have obvious burrs, and the concealed parting position shall not show obvious aging after 200 uses in an environment of 130℃ and 60min.

[0045] Example 2, please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the silicone structure of the inner cavity beam of the present invention; The present invention also provides an inner cavity crossbeam silicone structure, including a crossbeam silicone 501, wherein the crossbeam silicone 501 has a groove 502.

[0046] In this embodiment, the inner cavity of the groove 502 and the two side walls of the crossbeam silicone 501 shall not have burrs or flash, the product surface shall not have obvious parting lines, the concealed parting position shall not be cracked, the concealed parting position shall not have obvious burrs, and the concealed parting position shall not show obvious aging after 200 uses in an environment of 130℃ and 60min.

[0047] Example 3, please refer to Figure 8 , Figure 8 This is a schematic diagram of the structure of Embodiment 3 of the silicone structure of the inner cavity beam of the present invention; The present invention also provides an inner cavity crossbeam silicone structure, including a crossbeam silicone 501, wherein the crossbeam silicone 501 has a groove 502.

[0048] In this embodiment, the inner cavity of the groove 502 and the two side walls of the crossbeam silicone 501 shall not have burrs or flash, the product surface shall not have obvious parting lines, the concealed parting position shall not be cracked, the concealed parting position shall not have obvious burrs, and the concealed parting position shall not show obvious aging after 200 uses in an environment of 130℃ and 60min.

[0049] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0050] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A process for preparing silicone for an inner cavity crossbeam, characterized in that, Includes the following steps: Obtain environmentally friendly coating materials and optimize material dispersibility; Based on the surface treatment requirements, obtain the surface pretreatment process parameters for aluminum alloys and perform surface pretreatment on the aluminum alloys. Based on the coating performance requirements, a silicone composite coating was prepared and then sprayed onto the aluminum alloy surface. The coating thickness is monitored and adjusted online, and the spraying parameters are adjusted in real time to ensure the coating quality control requirements are met.

2. The silicone preparation process for the inner cavity beam as described in claim 1, characterized in that, In the steps of obtaining environmentally friendly coating materials and optimizing material dispersibility: A waterborne epoxy resin / graphene composite coating was prepared, and the graphene dispersion was optimized through molecular dynamics simulation to ensure the coating density. Nano-silane coupling agents were prepared for subsequent surface modification of aluminum alloys.

3. The silicone preparation process for the inner cavity beam as described in claim 1, characterized in that, In the steps of obtaining aluminum alloy surface pretreatment process parameters according to surface treatment requirements, the following steps are taken for aluminum alloy surface pretreatment: Low-temperature plasma cleaning equipment is used to clean the aluminum alloy surface, remove the oxide film, and improve the surface roughness; The surface of the cleaned aluminum alloy was modified using a nano-silane coupling agent.

4. The silicone preparation process for the inner cavity beam as described in claim 3, characterized in that, In the step of using low-temperature plasma cleaning equipment to clean the aluminum alloy surface, remove the oxide film, and improve the surface roughness: The power was set to 100~300W, the gas flow ratio Ar / O2=4:1, and the surface roughness was improved to Ra≤0.05μm.

5. The silicone preparation process for the inner cavity beam as described in claim 1, characterized in that, In the steps of preparing a silicone composite coating according to the coating performance requirements and spraying the silicone composite coating onto the aluminum alloy surface: A nano-ceramic layer is deposited on the surface of an aluminum alloy using magnetron sputtering technology to form an underlayer coating. An ultrasonic atomization spraying technology is used to uniformly spray a water-based epoxy resin / graphene composite coating onto a nano-ceramic layer to form an intermediate layer. A top coating is prepared, and an aqueous resin layer is cured on the intermediate coating using UV curing technology.

6. The silicone preparation process for the inner cavity beam as described in claim 5, characterized in that, In the steps of preparing a silicone composite coating according to the coating performance requirements and spraying the silicone composite coating onto the aluminum alloy surface: The thickness of the nano-ceramic layer is controlled at 50~100nm, and the thickness of the water-based resin layer is controlled at 50~80μm.

7. The silicone preparation process for the inner cavity beam as described in claim 6, characterized in that, In the steps of online detection and adjustment of coating thickness, and real-time adjustment of spraying parameters to ensure coating quality control requirements: Construct a machine vision-based online coating thickness detection system to monitor coating thickness in real time; By combining AI algorithms, the spraying parameters are adjusted in real time based on the coating thickness detection results to ensure that the coating thickness is uniform and consistent.

8. The silicone preparation process for the inner cavity beam as described in claim 7, characterized in that, In the step of combining AI algorithms to adjust spraying parameters in real time based on coating thickness detection results to ensure uniform coating thickness: Spraying parameters include pressure, temperature, and speed.

9. A silicone structure for an inner cavity beam, manufactured using the silicone preparation process for an inner cavity beam as described in claim 1, characterized in that, Includes a crossbeam silicone, the crossbeam silicone having grooves.

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