A cable branch head with flame extinguishing function

Abstract

This utility model provides a cable branch head with flame extinguishing function, belonging to the technical field of cable installation accessories. It solves the technical problems of traditional cable branch heads, such as cumbersome wire stripping operation, simple connection structure, and lack of active fire extinguishing function. It includes a shell and a connecting cylinder, with the connecting cylinder located inside the shell. Three circumferentially distributed connecting components are provided on one end of the outer circle of the connecting cylinder. A first stripping groove and a second stripping groove are provided on the other end of the outer circle of the connecting cylinder. Two symmetrical blades are detachably installed inside the first stripping groove, perpendicular to its axis. A second blade is detachably installed inside the second stripping groove, along its axis. Both the inner and outer surfaces of the shell are coated with a microcapsule-type fire extinguishing coating. This utility model integrates wire stripping function, simplifies operation, ensures circuit stability through optimized connection structure, and improves safety performance through the fire extinguishing coating and sealing design.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable installation accessories, and relates to a cable branch head with flame extinguishing function. Background Technology

[0002] Currently, traditional cable branch joints have many limitations in practical applications. The wire stripping process requires external tools, which is cumbersome and inefficient. Tool incompatibility can easily lead to improper insulation stripping, affecting subsequent connection quality. Connection structures often use simple crimping or bolt fixing, resulting in insufficient cable fit and poor contact. Furthermore, inappropriate selection of conductive component materials can increase resistance and cause overheating. In multi-core connections, core wire confusion and misalignment are also common. In addition, their protective performance is weak; most only provide basic outer shell protection and lack active fire suppression. When a fire breaks out at the joint due to a short circuit, the fire can easily spread. Simultaneously, insufficient sealing at the cable exit point allows dust and moisture to enter, leading to dampness and corrosion, significantly reducing the safety and lifespan of the cable branch joint.

[0003] Therefore, we propose a cable branch with flame extinguishing function, which integrates wire stripping function, simplifies operation, ensures circuit stability through optimized connection structure, and improves safety protection performance with the help of fire extinguishing coating and sealing design. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a cable branch head with flame extinguishing function. The technical problem to be solved by this utility model is: how to achieve integrated wire stripping function in the cable branch head, simplify operation, optimize connection structure, ensure circuit stability, and improve safety protection performance through fire extinguishing coating and sealing design.

[0005] The objective of this utility model can be achieved through the following technical solutions: A cable branch head with flame extinguishing function includes two symmetrical outer shells and a connecting cylinder. One end of each outer shell has a main line cavity, and the other end of each outer shell has a main line cavity and a branch line cavity. The two outer shells are joined together to form a complete shell. The corresponding main line cavities on the two outer shells form a main line outlet, and the corresponding branch line cavities on the two outer shells form a branch line outlet. The connecting cylinder is located inside the complete shell. One end of the outer circle of the connecting cylinder is provided with three circumferentially distributed connecting components. The other end of the outer circle of the connecting cylinder is provided with a stripping groove 1 and a stripping groove 2. The inside of the stripping groove 1 is provided with two symmetrical blades 1, which are arranged perpendicular to the axis of the stripping groove 1. The inside of the stripping groove 2 is provided with a blade 2, which is arranged along the axis of the stripping groove 2. Both the inner and outer surfaces of the two outer shells are provided with a microcapsule-type fire extinguishing coating.

[0006] The working principle of this utility model is as follows: When in use, the two outer shells are disassembled, and the insulation layer on the main cable and branch cable is cut off by the first blade on the connecting cylinder. Then, the insulation layer is cut along the axial direction by the second blade, thereby peeling off the insulation layer. The main cable and branch cable are then connected by the three circumferentially distributed connecting components on the connecting cylinder. After connection, the two outer shells are put together to protect the joint. The two ends of the main cable are placed in the main cable outlet, and the branch cable is placed in the branch cable outlet. In case of fire, the microcapsule-type fire extinguishing coating on the inner and outer surfaces of the two outer shells can play a flame extinguishing function.

[0007] The connecting assembly includes a connecting block 1. A main groove 1 is formed on the end face of the connecting block 1 away from the axis of the connecting cylinder. The axis of the main groove 1 is parallel to the axis of the connecting cylinder. A branch hole 1 is formed on one end of the connecting block 1. The branch hole 1 is located on one side of the main groove 1. The axis of the branch hole 1 is parallel to the axis of the main groove 1. A through hole is formed on the side wall of the branch hole 1, and the branch hole 1 communicates with the main groove 1 through the through hole. An installation cavity is formed on the groove wall of the main groove 1 away from the branch hole 1. A screw is rotatably installed inside the installation cavity. The end of the screw away from the main groove 1 extends out of the installation cavity and is fixed with an internal hexagonal rotating block. A movable block is slidably installed inside the installation cavity. The movable block is sleeved on the screw and screwed to the screw. A main wire pressure block and a branch wire pressure block are fixed on the end of the movable block near the main groove 1. The position and specifications of the branch wire pressure block correspond to the through hole. The main wire pressure block, the branch wire pressure block and the movable block are all made of conductive material, and the internal hexagonal rotating block is made of insulating material.

[0008] Using the above structure, when connecting the main cable and the branch cable, the exposed part of the main cable with its insulation stripped is placed into the main cable groove one, and the exposed end of the branch cable's insulation layer is placed into the branch cable hole one. The screw is rotated by the internal hexagonal rotating block, and the moving block screwed on the screw slides in the mounting cavity. The main cable clamping block and the branch cable clamping block on the moving block move towards the main cable and the branch cable respectively. The main cable clamping block fixes the main cable in the main cable groove one, and the branch cable clamping block fixes the branch cable in the branch cable hole one through the through hole. The main cable clamping block, the branch cable clamping block and the moving block connect the corresponding paths of the main cable and the branch cable. The three connecting components connect the corresponding core wires in the main cable and the branch cable respectively, thereby realizing the connection of the main cable and the branch cable.

[0009] The main line pressure block, branch line pressure block, and moving block are all made of copper-zinc alloy, while the internal hexagonal rotating block is made of hard plastic. The main line pressure block and the branch line pressure block are each provided with an arc-shaped opening groove at the end away from the moving block, and the axis of the arc-shaped opening groove is parallel to the axis of the main line groove.

[0010] With the above structure, the copper-zinc alloy material has good conductivity, the hard plastic material is wear-resistant and insulating, and the arc-shaped opening groove will cooperate with the main cable groove and the branch cable hole respectively. The arc structure better fits the outer surface of the main cable and the branch cable, thereby enhancing the fixing effect of the main cable and the branch cable and ensuring a stable connection.

[0011] The cylindrical sidewall of the connecting cylinder has three circumferentially distributed main grooves II, the position and specifications of which correspond to the main groove I. The cylindrical end face of one of the connecting cylinders has three circumferentially distributed branch holes II, the position and specifications of which correspond to the branch hole I.

[0012] With the above structure, during the cable connection process, main cable tray 2 cooperates with main cable tray 1, and branch cable hole 2 cooperates with branch cable hole 1. This allows for better positioning and placement of the main cable and branch cable, facilitating subsequent connection operations via the connecting components.

[0013] Sealing gaskets are provided on the splicing end faces of the two shells. Several connecting blocks are fixed on both shells. The two shells are connected to each other by connecting blocks and bolts. Positioning baffles are fixed on the four corners of one of the shells.

[0014] With the above structure, the two outer shells are connected to each other by connecting block two and bolts, thereby ensuring the stability of the shells. At the same time, the positioning baffles on the four corners of the shells can facilitate the alignment of the two shells during the assembly process, ensuring precise docking and facilitating installation.

[0015] Both the main line outlet and the branch line outlet are equipped with sealing rings inside.

[0016] With the above structure, the sealing ring will fit tightly against the main cable and branch cable passing through, thereby enhancing the sealing at the outlet and effectively preventing external dust, moisture and other impurities from entering the housing, protecting the internal connection components and cable joints from corrosion.

[0017] The microcapsule-type fire extinguishing coating is a solidified coating applied to the inner and outer surfaces of the outer shell. The thickness of the microcapsule-type fire extinguishing coating is 1.7-2.0 mm. The microcapsule-type fire extinguishing coating is made by mixing microcapsule flame extinguishing particles and modified acrylic emulsion. The particle size of the microcapsule flame extinguishing particles is 20-145 nm.

[0018] With the above structure, the microcapsule flame extinguishing particles can release the extinguishing agent when the ambient temperature reaches a certain threshold. The modified acrylic emulsion gives the coating good flexibility, adhesion and film-forming properties, which facilitates the formation of the microcapsule-type flame extinguishing coating.

[0019] Compared with existing technologies, this flame-extinguishing cable branch has the following advantages: 1. By connecting the cylinder and blade one and blade two together, the wire stripping function is integrated into the connecting cylinder, which can directly complete the cutting and axial cutting of the cable insulation layer without the need for additional tools, simplifying the pre-processing process and improving installation efficiency.

[0020] 2. By setting up connecting components and driving the moving block with a screw, the main wire pressure block, the branch wire pressure block and the main wire slot 1 and the branch wire hole 1 are tightly fitted together, and the arc-shaped opening slot enhances the fit; the main wire pressure block, the branch wire pressure block and the moving block made of copper-zinc alloy ensure good conductivity, and the three connecting components correspond to different core wire connections to ensure circuit stability.

[0021] 3. By setting a microcapsule-type fire extinguishing coating, fire extinguishing agent is released at high temperatures to achieve active flame extinguishing; the sealing rings of the main line outlet and branch line outlet effectively block dust and moisture, preventing the joints from getting damp or contaminated, and the double protection reduces the risk of failure. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is an exploded structural diagram of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the connecting cylinder in this utility model.

[0025] Figure 4 yes Figure 3 A structural diagram from another perspective.

[0026] Figure 5 This is a three-dimensional structural diagram of the connecting component in this utility model.

[0027] Figure 6 This is a cross-sectional structural diagram of the connecting component in this utility model.

[0028] In the diagram: 1. Outer shell; 2. Main line outlet; 3. Branch line outlet; 4. Connecting cylinder; 5. Connecting assembly; 6. Stripping groove one; 7. Blade one; 8. Stripping groove two; 9. Blade two; 10. Connecting block one; 11. Main line groove one; 12. Branch line hole one; 13. Through hole; 14. Main line pressure block; 15. Branch line pressure block; 16. Moving block; 17. Screw; 18. Hexagonal socket rotating block; 19. Main line groove two; 20. Branch line hole two; 21. Connecting block two; 22. Positioning baffle; 23. Sealing ring. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figures 1-6 As shown, this cable branch head with flame extinguishing function includes two symmetrical outer shells 1 and a connecting cylinder 4. One end of the outer shell 1 is provided with a main line cavity, and the other end of the outer shell 1 is provided with a main line cavity and a branch line cavity. The two outer shells 1 are assembled to form a complete shell. The corresponding main line cavities on the two outer shells 1 form a main line outlet 2, and the corresponding branch line cavities on the two outer shells 1 form a branch line outlet 3. The connecting cylinder 4 is located inside the complete shell. Three circumferentially distributed connecting components 5 are provided on one end of the outer circle side of the connecting cylinder 4. The other end of the outer circle side of the connecting cylinder 4 is provided with a wire stripping groove 1 6 and a wire stripping groove 2 8. The inside of the wire stripping groove 1 6 is detachably provided with two symmetrical blades 1 7, which are arranged perpendicular to the axis of the wire stripping groove 1 6. The inside of the wire stripping groove 2 8 is detachably provided with a blade 2 9, which is arranged along the axis of the wire stripping groove 2 8. The inner and outer surfaces of the two outer shells 1 are provided with microcapsule-type fire extinguishing coatings.

[0031] In this embodiment, during use, the two outer shells 1 are disassembled, and the insulation layers on the main cable and branch cable are cut using the blade 7 on the connecting cylinder 4. Then, the insulation layer is cut along the axial direction using the blade 9, thereby peeling off the insulation layer. The main cable and branch cable are then connected by the three circumferentially distributed connecting components 5 on the connecting cylinder 4. After connection, the two outer shells 1 are put together to protect the joint. The two ends of the main cable are placed in the main cable outlet 2, and the branch cable is placed in the branch cable outlet 3. In case of fire, the microcapsule-type fire extinguishing coating on the inner and outer surfaces of the two outer shells 1 can play a flame extinguishing function.

[0032] The connecting assembly 5 includes a connecting block 10. A main groove 11 is formed on the end face of the connecting block 10 away from the axis of the connecting cylinder 4. The axis of the main groove 11 is parallel to the axis of the connecting cylinder 4. A branch hole 12 is formed on one end of the connecting block 10, located on one side of the main groove 11. The axis of the branch hole 12 is parallel to the axis of the main groove 11. A through hole 13 is formed on the side wall of the branch hole 12, communicating with the main groove 11 through the through hole 13. A groove wall on the side of the main groove 11 away from the branch hole 12 is provided with… The mounting cavity contains a screw 17 that rotates inside. One end of the screw 17, away from the main cable groove 11, extends out of the mounting cavity and is fixed with an internal hexagonal rotating block 18. A movable block 16 is slidably provided inside the mounting cavity. The movable block 16 is sleeved on the screw 17 and screwed to it. A main cable pressure block 14 and a branch cable pressure block 15 are fixed on the end of the movable block 16 near the main cable groove 11. The position and specifications of the branch cable pressure block 15 correspond to the through hole 13. The main cable pressure block 14, the branch cable pressure block 15, and the movable block 16 are all made of conductive material, while the internal hexagonal rotating block 18 is made of insulating material.

[0033] In this embodiment, when connecting the main cable and the branch cable, the exposed portion of the main cable with its insulation stripped is placed into the main cable groove 11, and the exposed end of the branch cable's insulation layer is placed into the branch cable hole 12. The screw 17 is rotated by the internal hexagonal rotating block 18, and the movable block 16 screwed onto the screw 17 slides in the mounting cavity. The main cable clamping block 14 and the branch cable clamping block 15 on the movable block 16 move toward the main cable and the branch cable, respectively. The main cable clamping block 14 fixes the main cable in the main cable groove 11, and the branch cable clamping block 15 fixes the branch cable in the branch cable hole 12 through the through hole 13. The corresponding paths of the main cable and the branch cable are connected by the main cable clamping block 14, the branch cable clamping block 15, and the movable block 16. The three connecting components 5 are respectively connected to the corresponding core wires in the main cable and the branch cable, thereby realizing the connection between the main cable and the branch cable.

[0034] The main line pressure block 14, the branch line pressure block 15 and the moving block 16 are all made of copper-zinc alloy, and the internal hexagonal rotating block 18 is made of hard plastic. The main line pressure block 14 and the branch line pressure block 15 are provided with arc-shaped opening slots at the ends away from the moving block 16, and the axis of the arc-shaped opening slots is parallel to the axis of the main line slot 11.

[0035] In this embodiment, the copper-zinc alloy material has good conductivity, the hard plastic material is wear-resistant and insulating, and the arc-shaped opening groove will cooperate with the main cable groove 11 and the branch cable hole 12 respectively. The arc structure better fits the outer surface of the main cable and the branch cable, thereby enhancing the fixing effect of the main cable and the branch cable and ensuring a stable connection.

[0036] Three circumferentially distributed main grooves 19 are provided on the cylindrical sidewall of the connecting cylinder 4. The position and specifications of the main grooves 19 correspond to the main grooves 11. Three circumferentially distributed branch holes 20 are provided on one of the cylindrical end faces of the connecting cylinder 4. The position and specifications of the branch holes 20 correspond to the branch holes 12.

[0037] In this embodiment, during the cable connection process, the second main cable trough 19 cooperates with the first main cable trough 11, and the second branch cable hole 20 cooperates with the first branch cable hole 12. This allows for better positioning and placement of the main cable and branch cable, so that they can be connected later through the connecting component 5.

[0038] Sealing gaskets are provided on the splicing end faces of the two outer shells 1. Several connecting blocks 21 are fixed on both outer shells 1. The two outer shells 1 are connected to each other by connecting blocks 21 and bolts. Positioning baffles 22 are fixed on the four corners of one of the outer shells 1.

[0039] In this embodiment, the two outer shells 1 are connected to each other by connecting block 21 and bolts to ensure the stability of the shells. At the same time, the positioning baffles 22 on the four corners of the outer shells 1 can facilitate the alignment of the two outer shells 1 during the assembly process, ensuring precise docking and facilitating installation.

[0040] Both the main line outlet 2 and the branch line outlet 3 are equipped with sealing rings 23.

[0041] In this embodiment, the sealing ring 23 will fit tightly against the main cable and branch cable passing through, thereby enhancing the sealing at the outlet and effectively preventing external dust, moisture and other impurities from entering the housing, protecting the internal connecting components 5 and cable joints from corrosion.

[0042] The microcapsule-type fire extinguishing coating is a solidified coating applied to the inner and outer surfaces of the outer shell 1. The thickness of the microcapsule-type fire extinguishing coating is 1.7-2.0 mm. The microcapsule-type fire extinguishing coating is made by mixing microcapsule flame extinguishing particles and modified acrylic emulsion. The particle size of the microcapsule flame extinguishing particles is 20-145 nm.

[0043] In this embodiment, the microcapsule flame extinguishing particles can release the extinguishing agent when the ambient temperature reaches a certain threshold. The modified acrylic emulsion gives the coating good flexibility, adhesion and film-forming properties, which facilitates the formation of the microcapsule-type flame extinguishing coating.

[0044] The working principle of this utility model is as follows: In use, first disassemble the two symmetrical outer shells 1. Use the two blades 7 in the stripping groove 16 on the connecting cylinder 4 to cut the insulation layer of the main cable and branch cable. Then, use the blade 9 in the stripping groove 28 to cut and strip the insulation layer along the axial direction. Next, connect the cables. Place the exposed part of the main cable into the main cable groove 11 and main cable groove 29, and place the exposed end of the branch cable into the branch hole 12 and branch hole 20. Rotate the screw 17 in the mounting cavity using the internal hexagonal rotating block 18, causing the moving block 16 screwed onto the screw 17 to slide. This moves the main cable clamping block 14 and branch cable clamping block 15 on the moving block 16. The main cable clamping block 14 engages with the main cable groove 11, and the branch cable clamping block 15 connects to the branch cable through the through hole 13. The hole 12 fits together, and the arc-shaped opening groove fits the outer surface of the cable to enhance the fixing effect. At the same time, the main line clamping block 14, the branch line clamping block 15 and the moving block 16, made of copper-zinc alloy, connect the circuit. The three connecting components 5 connect the corresponding core wires of the main cable and the branch cable respectively. After the connection is completed, the two shells 1 are connected by several connecting blocks 21 and bolts. The positioning baffle 22 ensures precise docking. The main cable passes through the main line outlet 2 and the branch cable passes through the branch line outlet 3. The sealing rings 23 inside both fit tightly against the cable to enhance the sealing performance and prevent external dust, moisture and other impurities from entering. In addition, the microcapsule-type fire extinguishing coating on the inner and outer surfaces of the two shells 1 releases fire extinguishing agent when the ambient temperature reaches the threshold to achieve the flame extinguishing function, and the whole provides effective protection for the cable joint.

[0045] In summary, by using the connecting cylinder 4, blade 7, and blade 9 together, the wire stripping function is integrated into the connecting cylinder 4, which can directly complete the cutting and axial cutting of the cable insulation layer without the need for additional tools, simplifying the pre-processing process and improving installation efficiency. By setting the connecting component 5, the moving block 16 is driven by the screw 17 to make the main wire pressure block 14, the branch wire pressure block 15 fit tightly with the main wire groove 11 and the branch wire hole 12. The arc-shaped opening groove enhances the fit. The copper-zinc alloy main wire pressure block 14, the branch wire pressure block 15 and the moving block 16 ensure good conductivity. The three connecting components 5 correspond to different core wire connections to ensure circuit stability. By setting a microcapsule-type fire extinguishing coating, fire extinguishing agent is released at high temperatures to achieve active flame extinguishing; the sealing rings 23 of the main line outlet 2 and the branch line outlet 3 effectively block dust and moisture, preventing the joints from getting damp or contaminated, and the double protection reduces the risk of failure.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A cable branch head with flame extinguishing function, comprising two symmetrical outer shells (1) and a connecting cylinder (4), characterized in that, One end of the outer shell (1) is provided with a main line cavity, and the other end of the outer shell (1) is provided with a main line cavity and a branch line cavity. The two outer shells (1) are assembled to form a complete shell. The corresponding main line cavities on the two outer shells (1) form a main line outlet (2), and the corresponding branch line cavities on the two outer shells (1) form a branch line outlet (3). The connecting cylinder (4) is located inside the complete shell. Three circumferentially distributed connecting components (5) are provided on one end of the outer circle side of the connecting cylinder (4). The other end of the outer circle side of the connecting cylinder (4) is provided with a wire stripping groove one (6) and a wire stripping groove two (8). The inside of the wire stripping groove one (6) is provided with two symmetrical blades one (7). The blades one (7) are arranged perpendicular to the axis of the wire stripping groove one (6). The inside of the wire stripping groove two (8) is provided with a blade two (9). The blades two (9) are arranged along the axis of the wire stripping groove two (8). The inner and outer surfaces of the two outer shells (1) are provided with microcapsule-type fire extinguishing coatings.

2. A cable branch head with flame extinguishing function according to claim 1, characterized in that, The connecting component (5) includes a connecting block (10). A main groove (11) is provided on the end face of the connecting block (10) away from the axis of the connecting cylinder (4). The axis of the main groove (11) is parallel to the axis of the connecting cylinder (4). A branch hole (12) is provided on one end of the connecting block (10). The branch hole (12) is located on one side of the main groove (11). The axis of the branch hole (12) is parallel to the axis of the main groove (11). A through hole (13) is provided on the side wall of the branch hole (12). The branch hole (12) communicates with the main groove (11) through the through hole (13). The main groove (11) is located on the side wall away from the branch hole (12). An installation cavity is provided, and a screw (17) is rotatably provided inside the installation cavity. The end of the screw (17) away from the main wire groove (11) extends out of the installation cavity and is fixed with an internal hexagonal rotating block (18). A movable block (16) is slidably provided inside the installation cavity. The movable block (16) is sleeved on the screw (17) and screwed to the screw (17). A main wire pressure block (14) and a branch wire pressure block (15) are fixed on the end of the movable block (16) near the main wire groove (11). The position and specifications of the branch wire pressure block (15) correspond to the through hole (13). The main wire pressure block (14), the branch wire pressure block (15) and the movable block (16) are all made of conductive material, and the internal hexagonal rotating block (18) is made of insulating material.

3. A cable branch head with flame extinguishing function according to claim 2, characterized in that, The main line pressure block (14), branch line pressure block (15) and moving block (16) are all made of copper-zinc alloy material, and the internal hexagonal rotating block (18) is made of hard plastic material. The main line pressure block (14) and branch line pressure block (15) are provided with arc-shaped opening grooves at the ends away from the moving block (16), and the axis of the arc-shaped opening groove is parallel to the axis of the main line groove (11).

4. A cable branch head with flame extinguishing function according to claim 3, characterized in that, The cylindrical sidewall of the connecting cylinder (4) is provided with three circumferentially distributed main grooves (19), the position and specifications of which correspond to the main groove (11). Three circumferentially distributed branch holes (20) are provided on one of the cylindrical end faces of the connecting cylinder (4), the position and specifications of which correspond to the branch hole (12).

5. A cable branch head with flame extinguishing function according to claim 4, characterized in that, Sealing gaskets are provided on the splicing end faces of the two outer shells (1). Several connecting blocks (21) are fixed on both outer shells (1). The two outer shells (1) are connected to each other by connecting blocks (21) and bolts. Positioning baffles (22) are fixed on the four corners of one of the outer shells (1).

6. A cable branch head with flame extinguishing function according to claim 5, characterized in that, Both the main line outlet (2) and the branch line outlet (3) are equipped with sealing rings (23).

7. A cable branch head with flame extinguishing function according to claim 6, characterized in that, The microcapsule-type fire extinguishing coating is a solidified coating applied to the inner and outer surfaces of the outer shell (1). The thickness of the microcapsule-type fire extinguishing coating is 1.7-2.0 mm. The microcapsule-type fire extinguishing coating is made by mixing microcapsule flame extinguishing particles and modified acrylic emulsion. The particle size of the microcapsule flame extinguishing particles is 20-145 nm.

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