A fast-response fireproof tape

Abstract

This utility model relates to the field of electrical and electronic equipment safety protection, specifically to a fast-response fireproof tape. It features a thermochromic layer that changes color as the temperature rises, providing a clear indication of fire risk and early warning for personnel evacuation or firefighting. An insulation layer reduces the temperature of the tape surface and the underlying functional layer, slowing the spread of fire. When the ambient temperature rises, the perfluorohexanone microcapsules rupture, releasing perfluorohexanone which rapidly diffuses into the fire area. Through the synergistic design of thermochromic warning, insulation, and perfluorohexanone microcapsule fire extinguishing, real-time fire warning, heat barrier, and immediate release of extinguishing agent are achieved, comprehensively improving fire protection performance and solving the problem of insufficient response time in traditional fireproof tapes.

Description

Technical Field

[0001] This utility model relates to the field of electrical and electronic equipment safety protection technology, and in particular to a fast-response fireproof tape. Background Technology

[0002] Fire-retardant tape, as a core material for cable insulation, building fire protection, and industrial equipment protection, is widely used in the field of electrical and electronic equipment safety protection technology.

[0003] However, traditional fireproof tape has the problem of insufficient response time. Specifically, it lacks early fire warning function and cannot actively alert when a fire first breaks out at a temperature of 50-70°C; its heat insulation effect is insufficient, resulting in rapid heat transfer and the fire spreading to adjacent areas within 10-30 seconds; and the release of extinguishing agents is delayed or unevenly distributed.

[0004] These problems cause traditional fire tapes to miss critical response windows in fire prevention and control, exacerbating property damage and safety risks. Cable short-circuit fires can spiral out of control within seconds; therefore, given the instantaneous nature of fires, existing fire-resistant tapes are insufficient to meet modern safety requirements, necessitating a rapidly responding fire-resistant tape. Utility Model Content

[0005] To address the problem of insufficient response time in traditional fireproof tape.

[0006] This invention provides a fast-response fireproof tape, comprising an adhesive layer and release paper at the bottom, and further comprising a thermochromic layer, a heat insulation layer, and a functional layer arranged and connected from top to bottom; the thermochromic layer contains thermochromic microcapsules and is used for early warning of fire; the heat insulation layer contains heat-insulating microparticles and is used to block heat transfer; the functional layer is filled with perfluorohexanone microcapsules, which rapidly rupture at high temperatures to release perfluorohexanone; wherein the width of the functional layer is equal to the width of the thermochromic layer, and the width of the heat insulation layer is half the width of the thermochromic layer.

[0007] Preferably, the thermochromic microcapsules are either fluorane microcapsules or phenol-free microcapsules.

[0008] Preferably, the heat-insulating microparticles are one of hollow glass microspheres or nano-silica aerogel.

[0009] Preferably, the perfluorohexanone microcapsule includes a wall material and perfluorohexanone filling the interior of the wall material, wherein the wall material is one of modified polyurethane, modified polyethylene, modified TPE, or chitosan.

[0010] Preferably, the fast-response fireproof tape also includes a substrate support layer, which is located below the functional layer. The top surface of the substrate support layer is composite with the bottom surface of the functional layer. The substrate support layer is used to provide structural support and enhance thermal stability.

[0011] Preferably, the substrate support layer is either a polyimide film or a composite ceramic fiber cloth.

[0012] The beneficial effects of this utility model are reflected in the following aspects: 1) By setting up a thermochromic layer that changes color when the temperature rises, it visually indicates the fire risk and provides early warning for personnel evacuation or fire fighting.

[0013] 2) By setting up an insulation layer, the temperature of the tape surface and the functional layer behind it is reduced, thus delaying the spread of the fire to a deeper level.

[0014] 3) When the ambient temperature rises, the perfluorohexanone microcapsules rupture upon heating, releasing perfluorohexanone which rapidly diffuses into the fire area. Perfluorohexanone vaporizes at high temperatures, diluting the local oxygen concentration and entering the flame reaction zone to efficiently capture reactive free radicals, interrupting the chain reaction of combustion. Simultaneously, the vaporization process absorbs a large amount of heat, achieving rapid local cooling. Through the synergistic effect of chemical inhibition and physical cooling, a dual fire extinguishing mechanism is formed, effectively extinguishing initial fires and inhibiting heat spread.

[0015] 4) The width of the insulation layer is only half that of the thermochromic layer. It is used to match the overlapping characteristics of the edges when the tape is wrapped, to specifically block heat transfer, save costs, avoid ineffective coverage, make heat transfer more uniform, and avoid uneven release time of perfluorohexanone, which weakens the fire extinguishing effect.

[0016] Through the synergistic design of thermochromic warning, heat insulation and perfluorohexanone microcapsule fire extinguishing, real-time fire warning, heat isolation and immediate release of extinguishing agent are achieved, comprehensively improving fire protection performance and solving the problem of insufficient response time of traditional fireproof tape. Attached Figure Description

[0017] Figure 1 This is a perspective view of the fast-response fireproof tape provided by this utility model.

[0018] Figure 2 This is a cross-sectional view of the fast-response fireproof tape provided by this utility model.

[0019] In the diagram: 1-Thermochromic layer; 2-Insulation layer; 3-Functional layer; 4-Substrate support layer; 5-Adhesive layer; 6-Release paper. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Reference Figures 1-2 A fast-response fireproof tape includes an adhesive layer 5 and a release paper 6 at the bottom, and also includes a thermochromic layer 1, a heat insulation layer 2, and a functional layer 3 arranged and connected from top to bottom; the thermochromic layer 1 contains thermochromic microcapsules and is used to warn of fire; the heat insulation layer 2 contains heat-insulating microparticles and is used to block heat transfer; the functional layer 3 is filled with perfluorohexanone microcapsules, which rapidly rupture at high temperatures to release perfluorohexanone; wherein the width of the functional layer 3 is equal to the width of the thermochromic layer 1, and the width of the heat insulation layer 2 is half the width of the thermochromic layer 1.

[0022] By incorporating a thermochromic layer 1 that changes color with increasing temperature, it visually indicates fire risk, providing early warning for personnel evacuation or firefighting. An insulating layer 2 reduces the temperature of the tape surface and the functional layer 3 behind it, slowing the spread of fire. When the ambient temperature rises, the perfluorohexanone microcapsules rupture, releasing perfluorohexanone which rapidly diffuses into the fire area. Perfluorohexanone vaporizes at high temperatures, diluting the local oxygen concentration and entering the flame reaction zone to efficiently capture active free radicals, interrupting the chain reaction of combustion. Simultaneously, the vaporization process absorbs a large amount of heat, achieving rapid local cooling. Through the synergistic effect of chemical inhibition and physical cooling, a dual fire extinguishing mechanism is formed, effectively extinguishing initial fires and inhibiting heat spread. The insulating layer 2 is only half the width of the thermochromic layer 1, designed to match the overlapping edges of the tape during wrapping, specifically blocking heat transfer, avoiding ineffective coverage, resulting in more uniform heat distribution, and preventing uneven release of perfluorohexanone that could weaken the fire extinguishing effect. Through the synergistic design of thermochromic warning, heat insulation and perfluorohexanone microcapsule fire extinguishing, real-time fire warning, heat isolation and immediate release of extinguishing agent are achieved, comprehensively improving fire protection performance and solving the problem of insufficient response time of traditional fireproof tape.

[0023] When the heat source comes from the outside, the heat is transferred sequentially, causing the thermochromic layer 1 to change color first to serve as an early warning, while the heat insulation layer 2 delays the internal transfer of heat, providing directional response time for the functional layer 3. When the heat source comes from the inside, the heat directly triggers the perfluorohexanone microcapsules in the functional layer 3 to rupture rapidly, releasing perfluorohexanone to extinguish the fire. This fast-response fireproof tape achieves rapid response and protection against fires from both inside and outside.

[0024] The heat insulation layer 2 can be located on one side of the fireproof tape, or it can be located in the middle of the fireproof tape, forming a stepped shape that is wider in the middle and narrower on both sides. The adhesive layer 5 is made of high-temperature resistant silicone or ceramicized adhesive.

[0025] In some embodiments, the thermochromic microcapsules are either fluorane microcapsules or phenol-free microcapsules.

[0026] When the ambient temperature rises due to a potential fire and reaches the color change threshold of fluorescein microcapsules or phenol-free microcapsules, both fluorescein and phenol-free microcapsules will change from one color to another or become colorless. The fireproof tape will then undergo a rapid, visible color change, thus serving as a warning.

[0027] In some embodiments, the heat-insulating microparticles are either hollow glass microspheres or nano-silica aerogels.

[0028] The purpose of selecting hollow glass microspheres or nano-silica aerogel as heat insulation particles is to block heat transfer by utilizing the lightweight and high-efficiency heat insulation properties of hollow glass microspheres or nano-silica aerogel. This also significantly reduces the overall weight of the fireproof tape, making it easier to construct and apply.

[0029] In some embodiments, the perfluorohexanone microcapsules include a wall material and perfluorohexanone filling the interior of the wall material, wherein the wall material is one of modified polyurethane, modified polyethylene, modified TPE, or chitosan.

[0030] Choosing modified polyurethane, modified polyethylene, modified TPE, or chitosan as the wall material allows for precise control of the wall material's rupture temperature, ensuring that perfluorohexanone is only released when the preset temperature is reached. Furthermore, these materials exhibit good chemical and physical stability at room temperature, effectively preventing the core material from contacting the external environment and preventing perfluorohexanone from volatilizing, decomposing, leaching, or reacting adversely with the external environment, thus ensuring that perfluorohexanone maintains its activity during storage and its service life.

[0031] In some embodiments, the fast-response fireproof tape also includes a substrate support layer 4, which is located below the functional layer 3. The top surface of the substrate support layer 4 is composite with the bottom surface of the functional layer 3. The substrate support layer 4 is used to provide structural support and enhance thermal stability.

[0032] Preferably, the substrate support layer 4 is either a polyimide film or a composite ceramic fiber cloth.

[0033] The substrate support layer 4 is located below the functional layer 3, providing key structural support and thermal stability, effectively delaying heat transfer, ensuring that the perfluorohexanone microcapsules are released only at a preset high temperature, and avoiding accidental triggering; at the same time, it acts as a physical barrier to protect the functional layer 3 from mechanical damage and environmental erosion, significantly extending the service life of the fireproof tape.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast-response fire-retardant tape, comprising an adhesive layer at the bottom and a release paper, characterized in that: It also includes composite connections arranged from top to bottom: Thermochromic layer, containing thermochromic microcapsules, is used for early warning of fires; The insulation layer contains insulating particles to block heat transfer. The functional layer is filled with perfluorohexanone microcapsules, which rapidly rupture at high temperatures to release perfluorohexanone. The width of the functional layer is equal to the width of the thermochromic layer, and the width of the insulation layer is half the width of the thermochromic layer.

2. The fast-response fireproof tape according to claim 1, characterized in that: The thermochromic microcapsules are either fluorane microcapsules or phenol-free microcapsules.

3. The fast-response fireproof tape according to claim 1, characterized in that: The heat-insulating microparticles are either hollow glass microspheres or nano-silica aerogels.

4. The fast-response fireproof tape according to claim 1, characterized in that: The perfluorohexanone microcapsules include a wall material and perfluorohexanone filling the interior of the wall material. The wall material is one of modified polyurethane, modified polyethylene, modified TPE, or chitosan.

5. The fast-response fireproof tape according to claim 1, characterized in that: It also includes a substrate support layer, which is located below the functional layer. The top surface of the substrate support layer is composite with the bottom surface of the functional layer. The substrate support layer is used to provide structural support and enhance thermal stability.

6. The fast-response fireproof tape according to claim 5, characterized in that: The substrate support layer is either a polyimide film or a composite ceramic fiber cloth.

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