Flame-retardant sealing strip

Abstract

The utility model relates to the technical field of sealing strips, in particular to a flame-retardant sealing strip. According to the technical scheme, the flame-retardant sealing strip comprises a flame-retardant sealing strip body, a flexible steel wire mesh framework is arranged at the position, close to the outer surface, in the flame-retardant sealing strip body, the flexible steel wire mesh framework and the flame-retardant sealing strip body are integrally formed, a cavity is formed in the flame-retardant sealing strip body, and heated expansion gas is arranged in the cavity. Partitions are symmetrically arranged on the two sides of the interior of the cavity. According to the flame-retardant sealing strip, the appearance of the flame-retardant sealing strip can be kept unchanged in the long-time contact process of the flame-retardant sealing strip and the fire, the flame-retardant sealing strip can expand due to heating in the contact process of the flame-retardant sealing strip and the fire, a sealing gap possibly generated due to the fact that the sealing strip becomes soft due to heating is eliminated, and the sealing performance of the flame-retardant sealing strip and the fire blocking performance are improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing strip technology, specifically a flame-retardant sealing strip. Background Technology

[0002] Flame-retardant sealing strips, as a special sealing material, play an important role in ensuring safety. They are made by adding specific flame retardants to the material or by using raw materials with inherent flame-retardant properties. When exposed to a fire source, these flame-retardant components can inhibit the combustion reaction, slow down the spread of flames, and even stop combustion to a certain extent. This effectively prevents fire from spreading and expanding through sealed gaps. Due to their excellent flame-retardant properties, while maintaining good flexibility and sealing performance, they are widely used in the construction industry for doors, windows, curtain walls, and other parts, which can improve the overall fire safety level of buildings. In the automotive industry, they are used in engine compartments, body gaps, and other locations, ensuring the vehicle's sealing performance in high-temperature environments and delaying the spread of fire in the event of a fire, buying valuable time for evacuation and rescue.

[0003] Current flame-retardant sealing strips may soften after prolonged contact with fire during use, which can alter their shape, create gaps, reduce sealing performance, and render them ineffective at blocking fire. Therefore, we propose a flame-retardant sealing strip. Utility Model Content

[0004] The purpose of this utility model is to provide a flame-retardant sealing strip that maintains its shape even during prolonged contact with fire. Furthermore, the sealing strip expands due to heat during contact with fire, eliminating potential sealing gaps caused by softening due to heat. This improves the sealing performance and fire-blocking ability of the flame-retardant sealing strip, solving the problem that current flame-retardant sealing strips may soften after prolonged contact with fire, leading to changes in shape, sealing gaps, reduced sealing performance, and loss of fire-blocking capability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant sealing strip, comprising a flame-retardant sealing strip body, wherein a flexible steel wire mesh skeleton is provided inside the flame-retardant sealing strip body near the outer surface, and the flexible steel wire mesh skeleton and the flame-retardant sealing strip body are integrally formed, wherein a cavity is provided inside the flame-retardant sealing strip body, wherein a gas that expands upon heating is provided inside the cavity, and partition strips are symmetrically provided on both sides inside the cavity.

[0006] Preferably, the flame-retardant sealing strip body has symmetrically distributed limiting protrusions on both sides of the upper and lower surfaces. The four limiting protrusions are integrally formed with the flame-retardant sealing strip body, and the upper and lower surfaces of the flame-retardant sealing strip body form a groove. This provides a limiting and fixing function for the flame-retardant sealing strip body during installation.

[0007] Preferably, the upper and lower surfaces of the flame-retardant sealing strip body are provided with self-adhesive layers between the two limiting protrusions. The provision of two self-adhesive layers facilitates the pasting and fixing of the flame-retardant sealing strip body, improving the ease of use.

[0008] Preferably, the outer surface of the flame-retardant sealing strip body is provided with a heat-insulating coating. During the process of the flame-retardant sealing strip body coming into contact with the fire, the heat-insulating coating can reduce the heat transfer to the flame-retardant sealing strip body, so as to prevent the flame-retardant sealing strip body from softening rapidly due to heat.

[0009] Preferably, sound insulation cotton is provided inside the flame-retardant sealing strip body between the two partition strips, which can improve the sound insulation performance of the flame-retardant sealing strip body and reduce the harm of noise pollution to the human body.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model, by setting up a flame-retardant sealing strip body, cavity, thermally expanding gas, flexible steel wire mesh skeleton, and partition strip, achieves the goal of ensuring that the flame-retardant sealing strip maintains its shape during prolonged contact with fire. Furthermore, the flame-retardant sealing strip expands due to heat during contact with fire, eliminating potential sealing gaps caused by softening under heat. This improves the sealing performance and fire-blocking effect of the flame-retardant sealing strip. During prolonged contact between the flame-retardant sealing strip body and the fire, the flexible steel wire mesh skeleton enhances the stability of the flame-retardant sealing strip body structure, preventing the flame-retardant sealing strip body from... Due to prolonged heating, the flame-retardant sealing strip softens and deforms. Simultaneously, the internal gases expand due to heat, causing the flame-retardant sealing strip to expand. This eliminates the sealing gaps caused by the softening of the flame-retardant sealing strip, thereby improving its sealing performance and fire-blocking ability. Furthermore, the dividing strip divides the interior of the flame-retardant sealing strip into multiple chambers. This prevents the flame-retardant sealing strip from being destroyed by fire in a short time when it is in prolonged contact with the fire, further enhancing its sealing performance and fire-blocking ability.

[0012] 2. By incorporating sound-absorbing cotton, this utility model can improve the sound insulation performance of the flame-retardant sealing strip body, thereby reducing the harm of noise pollution to the human body. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model.

[0016] Reference numerals: 1. Flame-retardant sealing strip body; 2. Heat insulation coating; 3. Self-adhesive layer; 4. Limiting protrusion strip; 5. Cavity; 6. Separator strip; 7. Sound insulation cotton; 8. Heat-expanding gas; 9. Flexible steel wire mesh skeleton. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] like Figures 1-3 As shown, this utility model proposes a flame-retardant sealing strip, including a flame-retardant sealing strip body 1. A flexible steel wire mesh skeleton 9 is provided inside the flame-retardant sealing strip body 1 near its outer surface, and the flexible steel wire mesh skeleton 9 and the flame-retardant sealing strip body 1 are integrally formed. The flexible steel wire mesh skeleton 9 and the flame-retardant sealing strip body 1 are formed by extrusion. A cavity 5 is provided inside the flame-retardant sealing strip body 1. The cavity 5 is a sealed chamber and contains a heat-expanding gas 8, which is a non-combustible or combustion-supporting gas such as carbon dioxide. Two partition strips 6 are symmetrically provided on both sides inside the cavity 5, dividing the cavity 5 inside the flame-retardant sealing strip body 1 into three chambers. A heat-insulating coating 2 is provided on the outer surface of the flame-retardant sealing strip body 1. During the process of the flame-retardant sealing strip body 1 coming into contact with fire, the heat-insulating coating 2 can reduce the heat transfer to the flame-retardant sealing strip body 1, thereby preventing the flame-retardant sealing strip body 1 from softening rapidly due to heat.

[0020] In this embodiment, during the prolonged contact between the flame-retardant sealing strip body 1 and the fire, the flexible steel wire mesh skeleton 9 improves the structural stability of the flame-retardant sealing strip body 1, preventing it from softening and deforming due to prolonged heating. Simultaneously, after the flame-retardant sealing strip body 1 is heated, the internal heat-expanding gas 8 also expands, causing the flame-retardant sealing strip body 1 to expand and eliminate sealing gaps caused by softening. This improves the sealing performance and fire-blocking performance of the flame-retardant sealing strip body 1. Furthermore, the partition strip 6 divides the interior of the flame-retardant sealing strip body 1 into multiple chambers, preventing it from being destroyed in a short time during prolonged contact with the fire, further enhancing its sealing performance and fire-blocking performance.

[0021] Example 2

[0022] like Figures 1-3 As shown, the flame-retardant sealing strip proposed in this utility model, compared with Embodiment 1, further includes symmetrically distributed limiting protrusions 4 on both sides of the upper and lower surfaces of the flame-retardant sealing strip body 1. The four limiting protrusions 4 are integrally formed with the flame-retardant sealing strip body 1, and the upper and lower surfaces of the flame-retardant sealing strip body 1 form a groove, which plays a role in limiting and fixing the flame-retardant sealing strip body 1 during installation. Self-adhesive layers 3 are provided on both the upper and lower surfaces of the flame-retardant sealing strip body 1 between the two limiting protrusions 4. The setting of the two self-adhesive layers 3 facilitates the adhesive and fixing of the flame-retardant sealing strip body 1, improving the convenience of use. Sound insulation cotton 7 is provided inside the flame-retardant sealing strip body 1 between the two separators 6.

[0023] In this embodiment, the sound insulation cotton 7 can improve the sound insulation performance of the flame-retardant sealing strip body 1, thereby reducing the harm of noise pollution to the human body.

[0024] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A flame-retardant sealing strip comprising a flame-retardant sealing strip body (1), characterized in that: The fire -retardant sealing strip body (1) is provided with a flexible steel wire mesh framework (9) near the outer surface, and the flexible steel wire mesh framework (9) is integrally formed with the fire -retardant sealing strip body (1), the fire -retardant sealing strip body (1) is provided with a cavity (5), the cavity (5) is provided with a heat -expanding gas (8), and the cavity (5) is provided with a partition strip (6) on both sides.

2. The fire-retardant sealing strip according to claim 1, characterized in that: The fire -retardant sealing strip body (1) is provided with a fire -retardant sealing strip body (1) on both sides of the upper surface and the lower surface.

3. The fire-retardant sealing strip according to claim 2, characterized in that: The fire -retardant sealing strip body (1) is provided with a fire -retardant sealing strip body (1) on both sides of the upper surface and the lower surface.

4. The fire-retardant weather strip of claim 1, wherein: The fire -retardant sealing strip body (1) is provided with a fire -retardant sealing strip body (1) on both sides of the upper surface and the lower surface.

5. The fire-retardant weather strip of claim 1, wherein: The fire -retardant sealing strip body (1) is provided with a fire -retardant sealing strip body (1) on both sides of the upper surface and the lower surface.

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