Lightweight recyclable thermoplastic antenna housing

Abstract

The utility model relates to the technical field of antenna housing manufacturing, especially relates to the IPC H01Q1 field, and more specifically relates to a lightweight recyclable thermoplastic antenna housing. Comprising a connecting piece (1) and a functional piece (2), and the connecting piece (1) and the functional piece (2) are fixedly connected. According to the thermoplastic antenna housing provided by the utility model, the functional member and the connecting member can be separately optimized, and can also be arranged to form an integrated structure; the thickness of the main wall of the functional part is designed, so that the purpose of greatly reducing the weight of the product can be achieved; by setting different fixed connection modes, the purpose of light weight can be achieved on the basis of ensuring air tightness.

Description

Technical Field

[0001] The utility model relates to the technical field of radome manufacturing, especially in the field of IPC H01Q1, and more specifically, to a lightweight and recyclable thermoplastic radome. Background Art

[0002] The development of mobile communication technology has put forward more and more diverse requirements for the design and molding process of radomes. In different usage scenarios, the wall thickness of the radome should match the signal to enable the antenna to work stably and efficiently. In recent years, with the development of new thermoplastic resin material systems and new molding processes, thermoplastic resins have shown significant improvements in mechanical properties, environmental adaptability, and electrical properties, and have the advantage of being recyclable, with an increasingly wide range of applications. However, thermoplastic resin systems generally have the following problems when applied to radomes: (1) The main wall thickness of integrally molded radomes is generally above 3 mm, and products with a smaller main wall thickness are at a greater risk of warping, cracking, and failing the airtightness test; (2) Due to the limitation of the wall thickness, it is not conducive to achieving overall weight reduction of the radome.

[0003] CN116239879A provides a composite material for a thin-wall wide-section low-dielectric radome, using a specific ratio of high and low-temperature curing agents to achieve curing relay, with a higher exothermic temperature during the curing reaction, and retaining the interfacial properties and mechanical properties of the composite material. However, the resin system of this utility model selects thermosetting resin systems such as unsaturated polyester resin, vinyl ester resin, and one-component polyurethane resin, which cannot be reused after curing.

[0004] CN113692326B obtains an electronic device housing by insert molding to join a metal component and a plastic. This joining method eliminates the connection problem between the metal part and the plastic radome. The production efficiency of the products molded by this method is improved, and the airtightness of the interface meets the design requirements. However, the thickness of the metal part in this solution is about 2 mm, and the thickness of the plastic part is about 2 mm. The feasibility of connecting plastic parts with a main wall thickness less than 2 mm and the deformation of the plastic parts after molding is limited. Summary of the Utility Model

[0005] The first aspect of the utility model provides a lightweight and recyclable thermoplastic radome, including a connecting part and a functional part, and the connecting part and the functional part are fixedly connected.

[0006] The connecting part and the functional part include an integrated structure.

[0007] The connecting part and the functional part are of a split structure.

[0008] The way of the fixed connection includes one of gluing, welding, and injection molding.

[0009] Preferably, the preferred adhesive system for the bonding process can be one of epoxy system, polyurethane system and acrylic system.

[0010] Through various connection methods, the application range can be expanded and flexibly selected according to requirements.

[0011] The thickness of the functional part is 0.3 - 3.5 mm.

[0012] The connecting part and the functional part include an integrated structure, and the thickness of the functional part is 0.3 - 2.5 mm.

[0013] The connecting part and the functional part are of a split structure, and the thickness of the functional part is 2.5 - 3.5 mm.

[0014] The setting of the specific thickness can achieve both lightweight and stability after fixed connection.

[0015] The radome further includes an adhesive block, and the bonding is provided with an "L"-shaped cross-section on the connecting part.

[0016] The radome further includes a groove, the welding is provided with an "L"-shaped cross-section on the connecting part, and the groove is arranged at the lower part of the "L"-shaped cross-section.

[0017] The setting of the groove can improve the stability of welding and reduce the use of solder at the same time.

[0018] The injection molding is provided with a "concave" part at the end of the connecting part and is fixedly connected with the "convex" part arranged at the end of the functional part.

[0019] The setting of the "convex" part can improve the stability of injection molding connection and further reduce the requirement for connection accuracy.

[0020] The forming method of the thermoplastic radome includes the following forming steps: (1) forming of the connecting part; (2) forming of the functional part; (3) connection of the connecting part and the functional part.

[0021] The thermoplastic radome material is selected from thermoplastic resins, and the thermoplastic resin can be a single resin or a copolymer of several resins.

[0022] Preferably, the resin system can be one of PP, ABS, PC, PC / ABS, PEI, PBT, ASA.

[0023] Preferably, the resin copolymer can be one of ABS, PC / ABS, PC / ASA, PC / PBT.

[0024] In some preferred embodiments, the thermoplastic resin can be without filler or with filler added.

[0025] Preferably, the filler added includes one or more of chopped glass fibers or chopped quartz fibers, a halogen-free flame retardant, and a toughening agent.

[0026] Preferably, the length of the chopped glass fibers or chopped quartz fibers is 0.2 - 2 mm, and the mass fraction is preferably 20% - 40%.

[0027] Preferably, the halogen-free flame retardant is a silicon-based flame retardant, and the toughening filler can be either a rubber-based toughening agent or a thermoplastic elastomer toughening agent.

[0028] Beneficial effects:

[0029] 1. The thermoplastic radome proposed by the present utility model can optimize the functional components and connecting components separately or can be set to form an integrated structure.

[0030] 2. By designing the main wall thickness of the functional component, the purpose of significantly reducing the weight of the product can be achieved.

[0031] 3. By setting different fixed connection methods, the purpose of lightweight can be achieved on the basis of ensuring airtightness. Description of the drawings

[0032] Figure 1 Schematic diagram of the thermoplastic radome prepared for the embodiment.

[0033] Figure 2 Cross-sectional view of the thermoplastic radome prepared for Example 1.

[0034] Figure 3 Cross-sectional view of the thermoplastic radome prepared for Example 2.

[0035] Figure 4 Cross-sectional view of the thermoplastic radome prepared for Example 3.

[0036] Figure 5 Cross-sectional view of the thermoplastic radome prepared for Example 4.

[0037] Among them, 1, connecting component; 2, functional component; 3, adhesive block; 4, groove. Detailed implementation manners

[0038] Example 1

[0039] A lightweight recyclable thermoplastic radome, the material used for the radome is recyclable PC, including a connecting component 1 and a functional component 2, which is integrally formed, as Figure 1 shown, the main wall thickness of the functional area is 3.5 ± 0.05 mm, as Figure 2 shown.

[0040] Example 2

[0041] A lightweight recyclable thermoplastic radome, the material used for the radome is recyclable PC, including a connector 1, a functional part 2 and an adhesive block 3. The connector 1 is injection-molded; the functional part 2 can be molded by pressing, and the thickness of the functional part is 2.4 ± 0.05 mm; the "L"-shaped cross-section provided on the connector 1 is fixedly connected to the functional part 2 through the adhesive block 3, as Figure 3 shown.

[0042] Example 3

[0043] A lightweight recyclable thermoplastic radome, the material used for the radome is recyclable PC, including a connector 1 and a functional part 2. The connector 1 is injection-molded; the functional part 2 can be molded by pressing, and the thickness of the functional part is 2.4 ± 0.05 mm. An "inward concave" part is provided at the end of the connector 1 and is injection-molded and fixedly connected to the "outward convex" part provided at the end of the functional part 2, as Figure 4 shown.

[0044] Example 4

[0045] A lightweight recyclable thermoplastic radome, the material used for the radome is recyclable PP, including a connector 1, a functional part 2 and a groove 4. An "L"-shaped cross-section is provided on the connector 1, and the groove 4 is provided at the lower part of the "L"-shaped cross-section. Solder is filled in the groove 4 to connect the connector 1 and the functional part 2.

[0046] Performance test method

[0047] Air tightness test: The value represents the internal and external pressure difference. A negative sign indicates that the air pressure inside the radome is less than the external air pressure during the test, and a positive sign indicates that the air pressure inside the radome is greater than the external air pressure during the test.

[0048] Performance test data

[0049] Table 1

[0050]

Claims

1. A lightweight recyclable thermoplastic radome, characterized in that, It includes a connecting member (1) and a functional member (2), and the connecting member (1) and the functional member (2) are fixedly connected; the connecting member (1) and the functional member (2) include one of an integrated structure and a split structure; the way of the fixed connection includes one of gluing, welding, and injection molding.

2. The lightweight recyclable thermoplastic radome according to claim 1, wherein The thickness of the functional member (2) is 0.3 - 3.5 mm.

3. The lightweight recyclable thermoplastic radome according to claim 2, wherein The thickness of the functional member (2) is 0.3 - 2.5 mm.

4. The lightweight recyclable thermoplastic radome according to claim 3, characterized in that, The thickness of the functional member (2) is 2.5 - 3.5 mm.

5. The lightweight recyclable thermoplastic radome according to claim 4, wherein The radome further includes an adhesive block (3), and for gluing, the connecting member (1) is provided with an "L"-shaped cross-section.

6. The lightweight recyclable thermoplastic radome according to claim 5, characterized in that The radome further includes a groove (4), and for welding, the connecting member (1) is provided with an "L"-shaped cross-section, and the groove (4) is arranged at the lower part of the "L"-shaped cross-section.

7. The lightweight recyclable thermoplastic radome according to claim 6, wherein For injection molding, a "concave" part is arranged at the end of the connecting member (1) and is fixedly connected with a "convex" part arranged at the end of the functional member (2).

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