Conductive foam with flame-retardant function
By introducing two layers of metal mesh and a honeycomb structure into the conductive foam and using elastic clip splicing components, the problems of poor electromagnetic shielding, insufficient flame retardancy, and heavy weight of conductive foam are solved, achieving better electromagnetic shielding, flame retardancy, and heat dissipation performance to meet the needs of different scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YONGQIAN IND CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-17
Smart Images
Figure CN224139364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conductive foam technology, and in particular to a conductive foam with flame-retardant function. Background Technology
[0002] A conductive foam with flame-retardant properties has a wide range of applications in electronics, electrical appliances, communications, automobiles, aerospace, and many other fields. As electronic devices continue to become smaller and more integrated, the dense arrangement of electronic components inside these devices leads to increasingly serious electromagnetic interference problems. This necessitates a material that can effectively shield against electromagnetic interference. At the same time, in some applications with high safety requirements, such as aerospace and electronic and electrical equipment, the flame-retardant properties of the material are crucial to prevent the spread of fire and significant losses in the event of a fire. Furthermore, for equipment that needs to be frequently moved or installed in space-constrained environments, the weight and heat dissipation performance of the material have become key factors. Therefore, developing a foam material that integrates multiple properties such as conductivity, flame retardancy, heat dissipation, and lightweight is of significant practical importance.
[0003] In existing technologies, materials used to solve electromagnetic shielding and flame retardancy problems typically employ a single structural or technical principle. Some materials achieve electromagnetic shielding by coating a conductive coating onto the surface of ordinary foam. This coating is generally composed of conductive metal powder or conductive polymer, utilizing the conductivity of the coating to reflect and absorb electromagnetic waves. In terms of flame retardancy, a common practice is to add flame retardants during the foam production process. These flame retardants are mostly halogen compounds or phosphorus compounds, which can decompose to produce non-combustible gases when exposed to an ignition source, thereby inhibiting the spread of flames. However, these technical principles and mechanical structures are relatively simple and have certain limitations in practical applications.
[0004] However, existing conductive foams suffer from poor electromagnetic shielding performance. Due to the limited conductivity of the surface coating, and the tendency for the coating to peel off and wear during long-term use, the electromagnetic shielding effectiveness gradually decreases, failing to meet the growing electromagnetic shielding requirements of electronic devices. Furthermore, while traditional flame-retardant methods can provide some degree of flame retardancy, excessive addition of flame retardants can affect the physical properties of the foam, such as reducing its elasticity and softness. Moreover, the effectiveness of flame retardants is significantly reduced at high temperatures. Additionally, existing foams have poor heat dissipation performance, easily accumulating heat during use, leading to increased equipment temperature and affecting normal operation. Moreover, the material's weight is relatively large, increasing the overall burden on the equipment and hindering its miniaturization and lightweight development. Therefore, a conductive foam with flame-retardant properties is proposed to address these issues. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a conductive foam with flame-retardant function, which aims to improve the problems of poor electromagnetic shielding effect, insufficient flame retardancy, poor heat dissipation and heavy weight of existing foams.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A conductive foam with flame-retardant function includes conductive foam, which is the main body of the device and is used to support the internal structure; a reinforcing component, which is disposed inside the conductive foam and is used to enhance the internal effect of the conductive foam; and a splicing component, which is disposed on the outer wall of the conductive foam and is used to splice multiple conductive foams.
[0008] The reinforcing component includes a first metal mesh and a second metal mesh. The outer wall of the first metal mesh is fixedly connected to the inside of the conductive foam, and the outer wall of the second metal mesh is fixedly connected to the inside of the conductive foam. The first metal mesh and the second metal mesh are stacked together to enhance the overall conductivity of the foam and impede the flame. The conductive foam has honeycomb-shaped pores inside, which have good heat insulation properties and can prevent the transfer of heat.
[0009] As a further description of the above technical solution:
[0010] The splicing assembly includes a card block, the outer wall of which is fixedly connected to the outer wall of the conductive foam.
[0011] As a further description of the above technical solution:
[0012] The conductive foam has a groove inside, and the outer wall of the card block is slidably connected to the inside of the groove.
[0013] As a further description of the above technical solution:
[0014] The conductive foam has a first slot inside and a second slot inside.
[0015] As a further description of the above technical solution:
[0016] The front end of the card block has an inclined groove, the outer wall of the inclined groove is slidably connected to the inside of the card slot, and a flat plate is fixedly connected to the front end of the card block, the flat plate engaging with the card slot.
[0017] As a further description of the above technical solution:
[0018] The card block has a second inclined groove in the middle, and the outer wall of the second inclined groove is slidably connected to the inside of the first card slot. A second flat plate is fixedly connected in the middle of the card block, and the second flat plate engages with the first card slot.
[0019] As a further description of the above technical solution:
[0020] The card block engages with the slide groove to splice multiple conductive foams and improve the overall effect.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, two layers of metal mesh are set inside the conductive foam with flame-retardant function, and honeycomb-shaped holes are opened at the same time. The two layers of metal mesh enhance the conductivity and thermal conductivity, strengthen the electromagnetic shielding effect, assist in flame retardancy and accelerate heat dissipation; the honeycomb-shaped holes reduce weight while ensuring mechanical properties, and their good thermal insulation helps flame retardancy and can also improve air permeability. This solves the problems of poor electromagnetic shielding effect, insufficient flame retardancy, poor heat dissipation and heavy weight of foam, and significantly improves the conductivity, flame retardancy, heat dissipation, stability and adaptability of foam.
[0023] 2. In this utility model, two layers of elastic clips are set on the edge of the conductive foam. Multiple conductive foams can be spliced by the interlocking of the clips and the slots. This solves the problem that traditional conductive foams have fixed sizes and are difficult to adapt to complex spaces. It breaks through the limitation of a single specification, improves the flexibility of use, and can be combined as needed to meet the size and shape requirements of different scenarios. It also enhances the overall structural stability, making the spliced foam less likely to separate or fall off during use. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of a conductive foam with flame-retardant function proposed in this utility model.
[0025] Figure 2 This is a schematic diagram of the internal structure of a conductive foam with flame-retardant function proposed in this utility model.
[0026] Figure 3 This is a schematic diagram of the structure of a metal mesh for conductive foam with flame-retardant function proposed in this utility model.
[0027] Figure 4 for Figure 2 Enlarged view of point A in the middle;
[0028] Figure 5 This is a schematic diagram of the structure of a conductive foam clip with flame-retardant function proposed in this utility model.
[0029] Legend:
[0030] 1. Conductive foam; 2. Clip; 3. Slide groove; 4. Metal mesh one; 5. Metal mesh two; 6. Honeycomb holes; 7. Slot one; 8. Slot two; 9. Inclined groove one; 10. Flat plate one; 11. Inclined groove two; 12. Flat plate two. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figure 1 and Figure 3 This utility model provides an embodiment of a conductive foam with flame-retardant function, comprising conductive foam 1, which is the main body of the device and is made of materials such as polyurethane foam, polyether foam, or polyethylene foam. These materials are lightweight, elastic, and have excellent cushioning performance, and are used to support the internal structure, providing basic physical performance protection for the conductive foam. The conductive foam 1 is the main body of the device and is used to support the internal structure. A reinforcing component is disposed inside the conductive foam 1 to enhance the internal effect of the conductive foam 1. A splicing component is disposed on the outer wall of the conductive foam 1 for splicing multiple conductive foams 1.
[0033] The reinforcing components include metal mesh 4 and metal mesh 5, both of which are made of copper or aluminum mesh, which have good electrical and thermal conductivity. Metal mesh 4 is fixedly connected to the inside of conductive foam 1, and metal mesh 5 is also fixedly connected to the inside of conductive foam 1. Metal mesh 4 and metal mesh 5 are stacked together to enhance the overall conductivity of the foam, effectively conduct current, avoid static electricity accumulation and discharge, prevent electromagnetic interference, and ensure the normal operation of electronic equipment. The conductive foam 1 has honeycomb-shaped holes 6 inside, which are composed of a series of regularly arranged hexagonal holes. This structure has good heat insulation properties, can prevent heat transfer, plays a positive role in flame retardancy, and can also increase the air permeability of the foam, improving its performance in some special environments. The honeycomb-shaped holes 6 have good heat insulation properties and can prevent heat transfer.
[0034] Specifically, when using conductive foam 1, its unique internal structure plays a crucial role. Conductive foam 1 is embedded with metal mesh 1 (4) and metal mesh 2 (5). These two layers of metal mesh greatly enhance the overall conductivity of conductive foam 1, making it extremely effective in electromagnetic shielding, effectively blocking electromagnetic wave interference and leakage. Simultaneously, metal mesh 1 (4) and metal mesh 2 (5) can hinder the propagation of flames, playing an auxiliary role in flame retardancy, and also helping to dissipate heat quickly, thereby reducing the temperature of conductive foam 1 during use and greatly improving its stability and safety. Furthermore, conductive foam 1 also has honeycomb-shaped holes (6) inside. These honeycomb-shaped holes (6) have good heat insulation properties, effectively preventing heat transfer and further enhancing the flame retardant effect of the foam. Moreover, the honeycomb-shaped holes (6) increase the air permeability of the foam, improving the performance of conductive foam 1 in some special environments, making its application range wider. This solves the problems of insufficient conductivity, poor flame retardancy, poor heat dissipation, and poor air permeability of ordinary conductive foam, improving the functionality, safety, and applicability of conductive foam.
[0035] Reference Figure 1 and Figure 2 , Figure 4 and Figure 5 The splicing assembly includes a locking block 2, which is made of high-strength plastic with a certain degree of elasticity and wear resistance. The outer wall of the locking block 2 is firmly fixed to the outer wall of the conductive foam 1 with strong adhesive, for subsequent splicing with other conductive foams 1. The outer wall of the locking block 2 is fixedly connected to the outer wall of the conductive foam 1. The conductive foam 1 has a sliding groove 3 inside, and the outer wall of the locking block 2 is slidably connected to the inside of the sliding groove 3. The conductive foam 1 has a locking groove 7 and a locking groove 8 inside. The front end of the locking block 2 has a slanted groove 9. Both locking groove 7 and locking groove 8 are rectangular groove structures used to engage with corresponding parts on the locking block 2. The outer wall of the slanted groove 9 is slidably connected to the inside of the locking groove 8. During the splicing process, the slanted groove 9... The sloping design makes it easier for the locking block 2 to slide into the second slot 8, serving as a guide and assisting in pushing. The front end of the locking block 2 is fixedly connected to a flat plate 10, which is a flat plastic plate whose size matches the second slot 8. The flat plate 10 engages with the second slot 8. When the flat plate 10 is fully engaged in the second slot 8, it can effectively prevent the locking block 2 from coming out of the sliding groove 3, enhancing the stability of the splicing. The flat plate 10 engages with the second slot 8. The locking block 2 has a sloping groove 211 in the middle. The outer wall of the sloping groove 211 is slidably connected to the inside of the first slot 7. The locking block 2 is fixedly connected to a flat plate 22 in the middle. The flat plate 212 engages with the first slot 7. The locking block 2 engages with the sliding groove 3, which is used to splice multiple conductive foams 1 to improve the overall effect.
[0036] Specifically, when using conductive foam 1, it is often necessary to splice multiple conductive foams 1 according to the actual use situation to adapt to the needs of different devices. When splicing, the locking block 2 is slid into the corresponding sliding groove 3. Since the inclined groove 9 at the front end of the locking block 2 and the inclined groove 11 in the middle are both inclined structures, they can slide into the sliding groove 3 relatively smoothly during the pushing process. When the locking block 2 is fully inserted into the sliding groove 3, the flat surfaces of the flat plate 10 and the flat plate 12 will engage with the corresponding locking groove 8 and locking groove 7 respectively. This engagement method ensures the stability of the connection of multiple conductive foams 1, so that the spliced conductive foam can better exert the advantages of its internal metal mesh 4, metal mesh 5 and honeycomb holes 6, such as enhanced conductivity, auxiliary flame retardancy, heat insulation and breathability.
[0037] Working principle: When using conductive foam 1, the internal embedded metal mesh 1 4 and metal mesh 2 5 enhance the overall conductivity of conductive foam 1, making it perform better in electromagnetic shielding. At the same time, metal mesh 1 4 and metal mesh 2 5 can also hinder the spread of flame, assist in flame retardancy, and help dissipate heat quickly, reducing the temperature of conductive foam 1 during use and improving its stability and safety. In addition, the conductive foam 1 has honeycomb-shaped holes 6 inside, which have good heat insulation performance, can prevent heat transfer, and have a positive effect on flame retardancy. Furthermore, the honeycomb-shaped holes 6 can also increase the air permeability of the foam and improve its performance in some special environments.
[0038] In addition, when using conductive foam 1, multiple conductive foams 1 need to be spliced together according to the usage to adapt to different devices. At this time, the locking block 2 is slid into the corresponding sliding groove 3. Because the front inclined groove 9 and the middle inclined groove 11 are slopes, they are pushed into the sliding groove 3. Then, the planes of the flat plate 10 and the flat plate 12 engage with the corresponding locking groove 8 and locking groove 7 to ensure the stability of the connection.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A conductive foam with flame-retardant properties, characterized in that, include: Conductive foam (1), the conductive foam (1) is the main body of the device and is used to support the internal structure; A reinforcing component is disposed inside the conductive foam (1) to enhance the internal effect of the conductive foam (1); A splicing assembly is disposed on the outer wall of the conductive foam (1) for splicing multiple conductive foams (1); The reinforcing component includes a metal mesh one (4) and a metal mesh two (5). The outer wall of the metal mesh one (4) is fixedly connected to the inside of the conductive foam (1), and the outer wall of the metal mesh two (5) is fixedly connected to the inside of the conductive foam (1). The metal mesh one (4) and the metal mesh two (5) are stacked together to enhance the overall conductivity of the foam and hinder the flame. The conductive foam (1) has honeycomb-shaped holes (6) inside. The honeycomb-shaped holes (6) have good heat insulation properties and can prevent the transfer of heat.
2. The conductive foam with flame-retardant function according to claim 1, characterized in that: The splicing assembly includes a card block (2), the outer wall of which is fixedly connected to the outer wall of the conductive foam (1).
3. The conductive foam with flame-retardant function according to claim 2, characterized in that: The conductive foam (1) has a groove (3) inside, and the outer wall of the card block (2) is slidably connected to the groove (3).
4. The conductive foam with flame-retardant function according to claim 3, characterized in that: The conductive foam (1) has a slot 1 (7) inside and a slot 2 (8) inside.
5. A conductive foam with flame-retardant function according to claim 4, characterized in that: The front end of the card block (2) is provided with a sloping groove (9), the outer wall of the sloping groove (9) is slidably connected to the inside of the card slot (8), and the front end of the card block (2) is fixedly connected with a flat plate (10), which engages with the card slot (8).
6. A conductive foam with flame-retardant function according to claim 5, characterized in that: The card block (2) has a slanted groove two (11) in the middle. The outer wall of the slanted groove two (11) is slidably connected to the inside of the card slot one (7). The card block (2) has a flat plate two (12) fixedly connected in the middle. The flat plate two (12) engages with the card slot one (7).
7. A conductive foam with flame-retardant function according to claim 6, characterized in that: The card block (2) engages with the slide groove (3) to splice multiple conductive foams (1) to improve the overall effect.