Attached fireproof fire extinguishing pad

Abstract

The invention discloses an attached fireproof fire extinguishing pad which comprises a first fire extinguishing layer, a second fire extinguishing layer, a heat insulation layer and an adhesive layer which are fixedly connected in sequence. The first fire extinguishing layer and the second fire extinguishing layer are both composed of adhesives and fire extinguishing microcapsules, and each fire extinguishing microcapsule comprises a capsule shell composed of macromolecule resin, low-melting-point paraffin and expanded graphite and a perfluorohexanone capsule core packaged in the capsule shell. The content of an adhesive in the first fire extinguishing layer is high, and the content of fire extinguishing microcapsules is low; and the second fire extinguishing layer is relatively low in adhesive content and relatively high in fire extinguishing micro-capsule content. When in use, the fireproof fire-extinguishing pad is attached to a protective surface through the adhesive layer, and the first fire-extinguishing layer faces a fire position. When a fire occurs, the surface adhesive is heated and melted, the fire extinguishing micro-capsules are released, the micro-capsules are heated and blasted to release perfluorohexanone, and first-time rapid fire extinguishing is achieved. And if the fire behavior is continuous, the second layer is started immediately after the first layer is used up, and a larger dosage of fire extinguishing agent is provided for supplementary fire extinguishing, so that the reliability and continuity of fire extinguishing are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of fire extinguishing tool technology, specifically relating to an adhesive fireproof extinguishing mat. Background Technology

[0002] As a critical piece of equipment for power supply and signal transmission within a building, the distribution cabinet has exposed electrical components and cables. In hot and humid environments, these parts may leak electricity and generate electric sparks. These sparks can easily ignite dust that has accumulated inside the equipment, causing a fire. Such accidents have occurred multiple times in actual operation.

[0003] Given the high fire risk of equipment such as power distribution cabinets and sub-distribution cabinets, it is usually necessary to install independent fire extinguishing devices or systems to enhance protection and control capabilities. However, this approach also brings problems such as increased system complexity, significantly higher manufacturing and installation costs, which in turn negatively impacts production economics and the ease of subsequent maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide an adhesive fireproof and extinguishing mat to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adhesive fireproof and extinguishing mat, comprising a first extinguishing layer, a second extinguishing layer fixedly connected to the first extinguishing layer, a heat insulation layer fixedly connected to the second extinguishing layer, and an adhesive layer fixedly connected to the heat insulation layer;

[0006] Both the first fire extinguishing layer and the second fire extinguishing layer are composed of adhesive and fire extinguishing microcapsules;

[0007] The first fire extinguishing layer consists of: 50-70% by mass of the adhesive and 10-15% by mass of the fire extinguishing microcapsules;

[0008] The second fire extinguishing layer consists of: 20-40 by mass of the adhesive and 21-50 by mass of the fire extinguishing microcapsules;

[0009] The adhesive comprises: 50-70% epoxy resin by mass and 13-35% flame retardant by mass.

[0010] The fire extinguishing microcapsule includes a shell and a core. The core is perfluorohexanone, and the shell is a polymer resin, low-melting-point paraffin wax, and expanded graphite.

[0011] Preferably, the first fire extinguishing layer comprises: 58 parts by mass of the adhesive and 14 parts by mass of the fire extinguishing microcapsules;

[0012] The second fire extinguishing layer consists of: 36 parts by mass of the adhesive and 38 parts by mass of the fire extinguishing microcapsules;

[0013] The adhesive comprises 58 parts by mass of epoxy resin and 23 parts by mass of flame retardant.

[0014] Preferably, the flame retardant is resorcinol bis(diphenyl phosphate) (RDP).

[0015] Preferably, the heat insulation layer is a multi-layered glass fiber woven fabric.

[0016] Preferably, the D50 particle size of the fire extinguishing microcapsules is 0.1mm-1.5mm.

[0017] Preferably, the heat insulation layer is fixedly mounted with a metal connecting piece, and the metal connecting piece is provided with a connecting hole.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When installing a fireproof extinguishing mat, the surface of the first extinguishing layer should face the location of the fire hazard. When a fire occurs, the surface heats up, causing its adhesive to melt, releasing and exposing the extinguishing microcapsules inside. After the microcapsules burst due to heat, the perfluorohexanone in the core is sprayed towards the fire source, achieving rapid fire extinguishing.

[0020] If the fire is not extinguished, the second fire extinguishing layer will activate after the first layer is depleted: its surface will also melt due to heat, releasing the internal fire extinguishing microcapsules; after the microcapsules burst due to heat, the perfluorohexanone in the core will be sprayed again to extinguish the fire. Because the content of fire extinguishing microcapsules in the second fire extinguishing layer is higher than that in the first fire extinguishing layer, the fire extinguishing dosage is increased, ensuring the reliability of the final fire extinguishing. Attached Figure Description

[0021] Figure 1 This is a structural view of the present invention.

[0022] Figure 2 This is a cross-sectional structural view of the present invention.

[0023] Figure 3 This is a structural view of the fire extinguishing microcapsule of the present invention.

[0024] The diagram is labeled as follows: First fire extinguishing layer 1, Second fire extinguishing layer 2, Insulation layer 3, Adhesive layer 4, Adhesive 5, Fire extinguishing microcapsule 6, Capsule shell 7, Capsule core 8. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1:

[0027] An adhesive fireproof extinguishing pad includes a first extinguishing layer 1, a second extinguishing layer 2 fixedly connected to the first extinguishing layer 1, a heat insulation layer 3 fixedly connected to the second extinguishing layer 2, and an adhesive layer 4 fixedly connected to the heat insulation layer 3. Both the first extinguishing layer 1 and the second extinguishing layer 2 are composed of an adhesive 5 and extinguishing microcapsules 6. The first extinguishing layer 1 is composed of 50-70 parts by weight of adhesive 5 and 10-15 parts by weight of extinguishing microcapsules 6. The second extinguishing layer 2 is composed of 20-40 parts by weight of adhesive 5 and 21-50 parts by weight of extinguishing microcapsules 6. The adhesive 5 is composed of 50-70 parts by weight of epoxy resin and 13-35 parts by weight of flame retardant. The extinguishing microcapsules 6 include a shell 7 and a core 8. The core 8 is perfluorohexanone, and the shell 7 is composed of a polymer resin, low-melting-point paraffin wax, and expanded graphite. The first fire extinguishing layer 1 consists of 58 parts by weight of adhesive 5 and 14 parts by weight of fire extinguishing microcapsules 6; the second fire extinguishing layer 2 consists of 36 parts by weight of adhesive 5 and 38 parts by weight of fire extinguishing microcapsules 6; the adhesive 5 comprises 58 parts by weight of epoxy resin and 23 parts by weight of flame retardant. The flame retardant is resorcinol bis(diphenyl phosphate) (RDP). The heat insulation layer 3 is a multi-layer fiberglass woven fabric. The D50 particle size of the fire extinguishing microcapsules 6 is 0.1mm-1.5mm. The heat insulation layer 3 is fixedly installed with metal connecting plates, which have connecting holes.

[0028] With the above technical solution, when installing the fireproof extinguishing mat, the surface of the first extinguishing layer 1 should face the location of the fire hazard. When a fire occurs, this surface is heated, and its adhesive 5 melts, releasing and exposing the extinguishing microcapsules 6; after the extinguishing microcapsules 6 burst due to heat, the perfluorohexanone in the capsule core 8 is sprayed towards the fire source, achieving rapid fire extinguishing.

[0029] If the fire is not extinguished, the second fire extinguishing layer 2 will activate immediately after the first fire extinguishing layer 1 is depleted: the surface of the second fire extinguishing layer 2 will also melt due to heat, releasing the internal fire extinguishing microcapsules 6; the microcapsules will burst due to heat, and the perfluorohexanone in the core 8 will be sprayed again to extinguish the fire. Because the content of fire extinguishing microcapsules 6 in the second fire extinguishing layer 2 is greater than that in the first fire extinguishing layer 1, the fire extinguishing dosage is increased, ensuring the reliability of the final fire extinguishing.

[0030] Example 2:

[0031] The fireproof and extinguishing mat of this embodiment is used inside electrical equipment such as distribution cabinets to address the risk of fire caused by leakage current or electrical sparks igniting dust. Through its multi-layered structure, the mat can release extinguishing agents sequentially in the event of a fire, achieving effective fire suppression. Its simple structure facilitates installation and helps reduce system complexity and cost.

[0032] This fireproof and extinguishing mat comprises four layers that are fixedly connected in sequence. The outermost layer is the first extinguishing layer 1, which faces the potential fire hazard. The first extinguishing layer 1 is fixedly connected to the second extinguishing layer 2. Below the second extinguishing layer 2, the heat insulation layer 3 is fixedly connected. Below the heat insulation layer 3, the adhesive layer 4 is fixedly connected. The adhesive layer 4 is used to bond and fix the entire fireproof and extinguishing mat to the inner wall of the electrical cabinet or other surfaces that require protection.

[0033] Both the first extinguishing layer 1 and the second extinguishing layer 2 are composed of a mixture of binder 5 and extinguishing microcapsules 6, but in different proportions. In the first extinguishing layer 1, the mass ratio of binder 5 is 50 to 70, and the mass ratio of extinguishing microcapsules 6 is 10 to 15. In the second extinguishing layer 2, the mass ratio of binder 5 is 20 to 40, and the mass ratio of extinguishing microcapsules 6 is 21 to 50. This difference in proportion results in different extinguishing agent storage and release characteristics between the two layers.

[0034] The adhesive 5 is composed of epoxy resin and flame retardant. The mass ratio of epoxy resin is 50 to 70, and the mass ratio of flame retardant is 13 to 35. The addition of flame retardant improves the fire resistance of the adhesive 5 itself. The extinguishing microcapsule 6 consists of a shell 7 enclosing a core 8. The core 8 is perfluorohexanone, a highly effective extinguishing agent. The shell 7 is made of a mixture of polymer resin, low-melting-point paraffin wax, and expanded graphite.

[0035] The heat insulation layer 3 is located between the fire extinguishing layer and the adhesive layer 4. Its function is to block the high temperature generated by the fire from being conducted to the surface to which it is bonded, preventing heat damage to equipment or ignition of adjacent areas, thus improving safety. The adhesive layer 4 provides a convenient fixing method, allowing the fireproof extinguishing pad to be firmly attached to the surface of the protected target.

[0036] The working principle of this fireproof extinguishing mat is as follows. During installation, the surface of the first extinguishing layer 1 is positioned facing areas within the electrical distribution cabinet prone to fire, such as near electrical components or cable joints. When a fault in this area generates an electrical spark that ignites dust, the flame or high temperature acts on the surface of the first extinguishing layer 1. Upon heating, the adhesive 5 within the first extinguishing layer 1 melts due to the increased temperature, exposing the previously encapsulated extinguishing microcapsules 6. The exposed extinguishing microcapsules 6 rapidly burst under high temperature, their shells rupture, and the internal core 8 (perfluorohexanone) is released and sprayed towards the fire source, achieving rapid, immediate fire suppression intervention.

[0037] If the fire is strong and cannot be completely extinguished by the first fire extinguishing layer 1, the flames will continue to act on and consume the first fire extinguishing layer 1. After the first fire extinguishing layer 1 is depleted, the fire will reach the second fire extinguishing layer 2. The second fire extinguishing layer 2 will also melt its adhesive 5 due to heat, releasing the internally encapsulated fire extinguishing microcapsules 6. These fire extinguishing microcapsules 6 will burst upon heating, releasing perfluorohexanone again to extinguish the fire. Because the proportion of fire extinguishing microcapsules 6 in the second fire extinguishing layer 2 is significantly higher than that in the first fire extinguishing layer 1, it can provide a larger dose of extinguishing agent, forming a stronger secondary fire extinguishing capability, ensuring that the fire can be reliably extinguished in the end. Through the sequential action of the first fire extinguishing layer 1 and the second fire extinguishing layer 2, this fireproof fire extinguishing pad achieves a graded and reliable fire extinguishing function.

[0038] Example 3:

[0039] The fireproof and extinguishing mat of this embodiment is used to attach to locations inside electrical equipment such as distribution cabinets and sub-distribution cabinets where there is a fire hazard, such as near exposed electrical components or cable joints. The structure of the fireproof and extinguishing mat includes a first extinguishing layer 1, a second extinguishing layer 2, a heat insulation layer 3, and an adhesive layer 4, which are sequentially fixedly connected. Both the first extinguishing layer 1 and the second extinguishing layer 2 are composed of an adhesive 5 and fire extinguishing microcapsules 6. The fire extinguishing microcapsules 6 consist of a shell 7 and a core 8. The core 8 is made of perfluorohexanone, and the shell 7 is made of a mixture of polymer resin, low-melting-point paraffin wax, and expanded graphite. The heat insulation layer 3 prevents the high temperature generated by a fire from being transmitted to the back of the mat, while the adhesive layer 4 is used to adhere and fix the entire fireproof and extinguishing mat in a predetermined position.

[0040] Specifically, in this embodiment, the composition of the first fire extinguishing layer 1 is as follows: the adhesive 5 accounts for 58% by mass, and the fire extinguishing microcapsules 6 account for 14% by mass. The composition of the second fire extinguishing layer 2 is as follows: the adhesive 5 accounts for 36% by mass, and the fire extinguishing microcapsules 6 account for 38% by mass. The adhesive 5 used comprises epoxy resin and flame retardant, with the epoxy resin accounting for 58% by mass and the flame retardant accounting for 23% by mass. This optimized composition achieves a better fire extinguishing effect.

[0041] The working principle of this fireproof and extinguishing mat is as follows. During installation, the fireproof and extinguishing mat is adhered and fixed near potential ignition points inside electrical equipment using adhesive layer 4, with the surface of the first extinguishing layer 1 facing the potential ignition source. When a fire occurs inside the equipment due to dust ignited by an electrical spark, the flames and high temperatures first act on the surface of the first extinguishing layer 1. After the surface is heated, the adhesive 5 in this layer melts due to the high temperature, exposing the extinguishing microcapsules 6 that were originally encased in the adhesive 5. Upon continued heating, the exposed extinguishing microcapsules 6 rupture their shells 7, and the perfluorohexanone stored in the inner core 8 is rapidly sprayed towards the fire source, exerting its extinguishing effect.

[0042] If the fire is strong and cannot be completely extinguished by the first fire suppression layer 1, it will continue to develop and affect the second fire suppression layer 2. At this time, the surface of the second fire suppression layer 2 will also melt due to heat, releasing the encapsulated fire extinguishing microcapsules 6. These microcapsules 6 will burst upon heating, and the perfluorohexanone in their core 8 will be sprayed back towards the fire source for supplementary extinguishing. Because the mass percentage of the fire extinguishing microcapsules 6 in the second fire suppression layer 2 is much higher than that in the first fire suppression layer 1, it can provide a larger dose of extinguishing agent, thus ensuring effective fire suppression even when the fire is large, improving the ultimate reliability of the extinguishing process. The insulation layer 3 blocks heat during this process, protecting the equipment surface attached to the back of the pad.

[0043] Example 4:

[0044] The flame retardant in this embodiment is resorcinol bis(diphenyl phosphate) (RDP). The adhesive fire-resistant extinguishing mat comprises a first extinguishing layer 1, a second extinguishing layer 2, a heat insulation layer 3, and an adhesive layer 4, which are sequentially and fixedly connected. During installation, the adhesive layer 4 is used to attach and fix the entire fire-resistant extinguishing mat to a suitable location on the inner wall of a distribution cabinet or near electrical components, ensuring that the surface of the first extinguishing layer 1 faces the potential fire hazard area. The heat insulation layer 3 is located between the second extinguishing layer 2 and the adhesive layer 4. Its function is to block or reduce the transmission of high flame temperature to the back of the mat and the attached substrate during a fire, preventing the spread of fire or overheating of the equipment back panel.

[0045] The first fire extinguishing layer 1 and the second fire extinguishing layer 2 are the core components for achieving the fire extinguishing function in this embodiment. Both layers are composed of a mixture of adhesive 5 and fire extinguishing microcapsules 6, but the proportions of the two components differ. Specifically, in the composition of the first fire extinguishing layer 1, the mass ratio of adhesive 5 is 5:8, and the mass ratio of fire extinguishing microcapsules 6 is 1:4. In the composition of the second fire extinguishing layer 2, the mass ratio of adhesive 5 is 3:6, and the mass ratio of fire extinguishing microcapsules 6 is 3:8. This differentiated design forms the basis for staged fire extinguishing.

[0046] In this embodiment, the adhesive 5 serves as the matrix for fixing the fire extinguishing microcapsules 6. The adhesive 5 comprises epoxy resin and a flame retardant, with the epoxy resin having a mass ratio of 5:8 and the flame retardant a mass ratio of 2:3. Specifically, the flame retardant used is resorcinol bis(diphenyl phosphate), i.e., RDP. RDP is a highly efficient phosphorus-based flame retardant. When uniformly dispersed in the epoxy resin matrix, it functions under heating conditions, enhancing the flame retardant properties of the adhesive 5 layer by promoting charring of the epoxy resin matrix and isolating oxygen and heat.

[0047] The extinguishing microcapsule 6 is the storage and release unit for the extinguishing agent. Each extinguishing microcapsule 6 consists of a shell 7 and a core 8. The core 8 is made of perfluorohexanone, a clean and highly efficient extinguishing agent with strong heat absorption during vaporization, and is non-conductive and leaves no residue. The shell 7 is made of a mixture of polymer resin, low-melting-point paraffin wax, and expanded graphite. This composite shell 7 material is designed to be sensitive to heat. When the ambient temperature rises to a specific range, the low-melting-point paraffin wax softens or melts first, the strength of the polymer resin decreases accordingly, and the expanded graphite expands due to heat. These factors work together to cause the shell 7 structure to rupture.

[0048] Its fire extinguishing principle is as follows: When an electrical spark is generated inside the distribution cabinet due to a fault and ignites combustibles, the flame or high temperature first acts on the surface of the first fire extinguishing layer 1 facing the fire source. The heat softens and melts the adhesive 5 in this layer, exposing the fire extinguishing microcapsules 6 that were originally encapsulated and fixed. The exposed fire extinguishing microcapsules 6 are rapidly heated, and their shells 7 rupture under the action of heat, instantly vaporizing and ejecting the perfluorohexanone core 8 stored inside, which directly acts on the initial fire source to achieve rapid suppression or extinguishing.

[0049] If the fire is strong and cannot be completely extinguished by the first extinguishing layer 1, as the material of the first extinguishing layer 1 is consumed, the flames or high temperatures will act on the second extinguishing layer 2. The second extinguishing layer 2 repeats the above process: the surface adhesive 5 melts upon heating, releasing the internally encapsulated extinguishing microcapsules 6; the microcapsules rupture upon heating, releasing perfluorohexanone for secondary fire extinguishing. Because the proportion of extinguishing microcapsules 6 in the second extinguishing layer 2 is significantly higher than that in the first extinguishing layer 1, it can provide a larger dose of extinguishing agent, forming a stronger fire extinguishing capability, ensuring effective extinguishing even when facing developing fires, and improving the ultimate reliability of fire extinguishing.

[0050] Example 5:

[0051] In this embodiment, the heat insulation layer 3 is constructed of multi-layered fiberglass woven fabric. This heat insulation layer 3 is fixedly connected to the second fire extinguishing layer 2, and its other side is fixedly connected to the adhesive layer 4. The multi-layered fiberglass woven fabric forms a dense heat insulation barrier through its woven structure, effectively preventing the high temperatures generated by the flames from being transferred to the back of the pad and the surface of the attached equipment. In the event of a fire, this structure reduces the rate at which heat is conducted through the pad to adjacent areas or the equipment itself, thereby providing the equipment with a longer period of safe protection. Combined with the fire extinguishing effect of the fire extinguishing layer, it comprehensively improves the overall fire safety effect.

[0052] In practical implementation, this adhesive fireproof and extinguishing mat is used to protect electrical equipment such as distribution cabinets and sub-cabinets. These devices contain exposed electrical components and cables, which, under certain conditions, may generate electrical sparks due to leakage, potentially igniting accumulated dust and causing a fire. The fireproof and extinguishing mat is directly attached to the inner wall of the cabinet or near key potential hazard points via its adhesive layer 4, with its first extinguishing layer 1 facing the potential ignition point. This installation method eliminates the need for a complex independent fire suppression system, simplifying the protective structure and reducing manufacturing costs and installation / maintenance difficulties.

[0053] When a fire breaks out inside the cabinet due to dust ignition caused by an electric spark, the flame or high temperature first acts on the surface of the first fire extinguishing layer 1. Upon heating, the adhesive 5 in this layer melts, exposing the previously encapsulated fire extinguishing microcapsules 6. The exposed microcapsules 6 rapidly burst under high temperature, their shells rupture, and the perfluorohexanone stored in the inner core 8 is released and sprayed towards the fire source, achieving initial rapid fire extinguishing.

[0054] If the fire is large or persistent, after the extinguishing microcapsules 6 in the first extinguishing layer 1 are depleted, the fire will reach the second extinguishing layer 2. The second extinguishing layer 2, also heated, will cause its adhesive 5 to melt, releasing a higher concentration of extinguishing microcapsules 6. These microcapsules 6 will then burst upon heating, releasing perfluorohexanone again for fire suppression. Because the proportion of extinguishing microcapsules 6 in the second extinguishing layer 2 is higher than in the first extinguishing layer 1, a larger dose of extinguishing agent can be provided, ensuring effective suppression of persistent or reignited fires and improving the ultimate reliability of fire suppression. Throughout the fire suppression process, the multi-layered fiberglass woven insulation layer 3 located on the back of the second extinguishing layer 2 continuously provides insulation, protecting the equipment structure on the back of the pad from high-temperature damage.

[0055] Example 6:

[0056] The fireproof and extinguishing mat of this embodiment is suitable for use inside electrical equipment such as distribution cabinets and sub-distribution cabinets, and is used to deal with fires caused by leakage current or electrical sparks igniting dust. Through a specific structural design, this fireproof and extinguishing mat can automatically activate and release extinguishing agent when a fire occurs, achieving rapid and effective initial fire suppression.

[0057] The structure of this adhesive fireproof extinguishing pad includes a first extinguishing layer 1, a second extinguishing layer 2, a heat insulation layer 3, and an adhesive layer 4, which are fixedly connected in sequence. Both the first extinguishing layer 1 and the second extinguishing layer 2 are composed of an adhesive 5 and extinguishing microcapsules 6. Specifically, in the first extinguishing layer 1, the mass ratio of adhesive 5 is 50 to 70, and the mass ratio of extinguishing microcapsules 6 is 10 to 15. In the second extinguishing layer 2, the mass ratio of adhesive 5 is 20 to 40, and the mass ratio of extinguishing microcapsules 6 is 21 to 50. The adhesive 5 is composed of epoxy resin in a mass ratio of 50 to 70 and a flame retardant in a mass ratio of 13 to 35. The extinguishing microcapsules 6 consist of a shell 7 and a core 8. The core 8 is made of perfluorohexanone, and the shell 7 is made of a mixture of polymer resin, low-melting-point paraffin wax, and expanded graphite.

[0058] The key to this embodiment is that the D50 particle size of the fire extinguishing microcapsules 6 is controlled within the range of 0.1 mm to 1.5 mm. This particle size range is set based on a comprehensive consideration of the dispersibility of the fire extinguishing microcapsules 6 in the fire extinguishing layer, their thermal response characteristics, and their compatibility with the adhesive 5. When the D50 particle size of the fire extinguishing microcapsules 6 is within this range, the mixing process of the microcapsules in the adhesive 5 is more uniform, which can avoid the problems of sedimentation caused by excessively large particle size or agglomeration caused by excessively small particle size, thereby ensuring the consistency of the distribution of the fire extinguishing microcapsules 6 in the first fire extinguishing layer 1 and the second fire extinguishing layer 2.

[0059] When a fire occurs, flames or high temperatures act on the surface of the attached fireproof extinguishing pad, i.e., the outer side of the first extinguishing layer 1. Heat transfer causes the adhesive 5 in the first extinguishing layer 1 to soften and gradually melt. As the adhesive 5 melts, the previously encapsulated and fixed extinguishing microcapsules 6 are exposed. Upon heating, the low-melting-point paraffin and other components inside the shell 7 of the extinguishing microcapsule 6 change, causing the shell 7 to rupture. After the shell 7 ruptures, the perfluorohexanone material encapsulated inside is rapidly released and vaporized, directly spraying towards the fire source area. Perfluorohexanone has excellent fire extinguishing performance and can quickly suppress flames.

[0060] If the fire is intense and the fire extinguishing microcapsules 6 of the first fire extinguishing layer 1 are not extinguished after all of them are released, the fire will continue to act on the already depleted first fire extinguishing layer 1, thereby heating the second fire extinguishing layer 2 below it. The activation mechanism of the second fire extinguishing layer 2 is the same as that of the first fire extinguishing layer 1: its adhesive 5 melts upon heating, releasing the internally encapsulated fire extinguishing microcapsules 6. Because the mass proportion of the fire extinguishing microcapsules 6 in the second fire extinguishing layer 2 is significantly higher than that in the first fire extinguishing layer 1, it releases a larger dose of perfluorohexanone, providing stronger and more sustained fire extinguishing capabilities to ensure the complete extinguishing of the fire.

[0061] In this process, the D50 particle size of the fire extinguishing microcapsules 6 is 0.1 mm to 1.5 mm, and this size characteristic plays an important role. The suitable particle size ensures that when the microcapsules are heated, heat can be transferred relatively evenly and quickly to the capsule shell 7, prompting it to rupture in time. At the same time, when the microcapsules in this particle size range burst, the release rate and diffusion pattern of the perfluorohexanone in the capsule core 8 are more ideal, allowing for full contact with the fire source, thereby improving the fire extinguishing efficiency. The heat insulation layer 3 can effectively block the transmission of high temperature to the protected equipment body during a fire, while the adhesive layer 4 is used to firmly attach the entire fireproof extinguishing pad to the predetermined position on the inner wall of equipment such as electrical cabinets.

[0062] By adopting the above structure, especially by limiting the D50 particle size of the fire extinguishing microcapsules 6 to 0.1 mm to 1.5 mm, the attached fireproof and extinguishing pad of this embodiment solves the problems of high cost and difficult maintenance of installing complex fire extinguishing systems in confined spaces such as power distribution cabinets, and provides a passive fire protection solution with simple structure, fast response and reliable fire extinguishing.

[0063] Example 7:

[0064] In this embodiment, a metal connecting piece is fixedly installed on the heat insulation layer 3, and the metal connecting piece is provided with a connecting hole. This structural feature provides an alternative installation and fixing method for the fireproof and fire-extinguishing pad besides the adhesive layer 4.

[0065] The metal connecting plates are fixedly connected to the insulation layer 3 by mechanical means or welding. The connecting holes on the connecting plates are matched with the size of standard fasteners such as screws or bolts. Installers can pre-drill holes or set threaded holes at appropriate locations on the inner wall of the cabinet according to the cabinet structure of the specific protected object, such as the distribution cabinet or sub-box. Then, align the connecting holes on the metal connecting plates of the fireproof and extinguishing pad with the holes on the cabinet, and use screws to pass through the connecting holes and screw them into the threaded holes of the cabinet to firmly fix the entire fireproof and extinguishing pad in the predetermined position.

[0066] This installation method utilizes the mechanical strength of the metal connecting plates, enabling the fireproof and extinguishing pad to withstand certain external forces or vibrations, resulting in a more stable and reliable installation. It is particularly suitable for scenarios with uneven cabinet surfaces or where higher requirements are placed on long-term bonding reliability. When maintenance or replacement of the fireproof and extinguishing pad is needed, it can be removed simply by loosening the screws, making operation easy and maintenance convenient.

[0067] During fire protection, the metal connecting piece is tightly fixed to the insulation layer 3. The insulation layer 3 effectively blocks the high temperature generated by the fire from being conducted to the cabinet wall, protecting the connecting piece and its fasteners from premature failure due to overheating. This ensures the overall structural integrity and stable installation of the fireproof extinguishing pad during firefighting operations. The structure of the metal connecting piece and its connecting holes, combined with the bonding method provided by the adhesive layer 4, effectively complements the design, offering users flexible and diverse installation options. This simplifies the installation process inside various electrical cabinets and enhances the applicability and ease of installation of the fireproof extinguishing pad.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. An adhesive fireproof and extinguishing mat, characterized in that, It includes a first fire extinguishing layer, a second fire extinguishing layer fixedly connected to the first fire extinguishing layer, a heat insulation layer fixedly connected to the second fire extinguishing layer, and an adhesive layer fixedly connected to the heat insulation layer. Both the first fire extinguishing layer and the second fire extinguishing layer are composed of adhesive and fire extinguishing microcapsules; The first fire extinguishing layer consists of: 50-70% by mass of the adhesive and 10-15% by mass of the fire extinguishing microcapsules; The second fire extinguishing layer consists of: 20-40 by mass of the adhesive and 21-50 by mass of the fire extinguishing microcapsules; The adhesive comprises: 50-70% epoxy resin by mass and 13-35% flame retardant by mass. The fire extinguishing microcapsule includes a shell and a core. The core is perfluorohexanone, and the shell is a polymer resin, low-melting-point paraffin wax, and expanded graphite.

2. The attachable fireproof and extinguishing mat according to claim 1, characterized in that, The first fire extinguishing layer consists of 58 parts by mass of the adhesive and 14 parts by mass of the fire extinguishing microcapsules; the second fire extinguishing layer consists of 36 parts by mass of the adhesive and 38 parts by mass of the fire extinguishing microcapsules. The adhesive comprises 58 parts by mass of epoxy resin and 23 parts by mass of flame retardant.

3. The attachable fireproof and extinguishing mat according to claim 2, characterized in that, The flame retardant is resorcinol bis(diphenyl phosphate) (RDP).

4. The attachable fireproof and extinguishing mat according to claim 1, characterized in that, The insulation layer is a multi-layered fiberglass woven fabric.

5. The attachable fireproof and extinguishing mat according to claim 1, characterized in that, The D50 particle size of the fire extinguishing microcapsules is 0.1mm-1.5mm.

6. The attachable fireproof and extinguishing mat according to claim 1, characterized in that, The heat insulation layer is fixedly installed with a metal connecting piece, and the metal connecting piece is provided with a connecting hole.

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