Electric arc prevention boot

Abstract

The invention discloses an arc protection boot, and relates to the technical field of protection boots. The anti-skid wear-resistant boot comprises a boot vamp, the top of the boot vamp is fixedly connected with a boot leg, the bottom of the boot vamp is fixedly connected with a boot sole, the boot vamp is of a composite structure and sequentially comprises an electric arc shielding layer, a heat insulation buffer layer and a comfortable lining layer from outside to inside, the boot sole comprises an anti-skid wear-resistant layer, and the top of the anti-skid wear-resistant layer is fixedly connected with an insulating layer. By means of the unique multi-layer composite structure of the boot vamp, especially the reasonable proportion of metal fibers and high-performance synthetic fibers in the arc shielding layer and the design of the insulating layer of the boot sole, high temperature, current and shock waves of an arc can be effectively resisted, comprehensive and reliable protection is provided for the foot, the boot leg is made of the arc shielding material the same as the boot vamp, and the service life of the boot is prolonged. The protection range is further expanded, and the high-efficiency arc protection performance can significantly reduce the injury risk of the worker in an arc accident, thereby providing powerful guarantee for the life safety of the worker.

Description

Technical Field

[0001] The invention belongs to the technical field of protective boots, and in particular relates to arc protection boots. Background Art

[0002] With the rapid development of modern industry, the status of industries such as electricity, metallurgy, and chemical industry in the national economy has become increasingly important. However, there are many potential dangers in the working environment of these industries, and arc hazards are one of the more prominent ones. In the power industry, arc accidents often occur in the operation, maintenance, and troubleshooting of high-voltage equipment. When electrical equipment fails such as short circuits and overloads, strong currents will instantly break through the air, forming high-temperature, strong arcs. For example, during the switching operation of a substation, if the operation is improper, an arc may be triggered, and its temperature can reach thousands of degrees Celsius. The energy released instantly will not only cause serious damage to the equipment, but also cause great harm to the operator's body.

[0003] The existing protective boots on the market mainly focus on conventional anti-slip, anti-smashing, anti-puncture and other functions. Although some products claim to have certain anti-arc performance, the actual protection effect is not ideal. On the one hand, the protective materials and structural designs used in these products cannot effectively resist the high temperature and current generated by the arc. For example, some so-called anti-arc boots only add a thin layer of insulating coating on the surface. When the arc energy is large, this coating is easily punctured and cannot provide reliable protection for the feet. On the other hand, traditional anti-arc boots are often designed without paying attention to the comfort and breathability of wearing. After wearing for a long time, the feet are prone to sweating and stuffiness, which will not only reduce the comfort of the staff, but also may affect their work efficiency and operational flexibility. Moreover, the airtight environment is prone to breed bacteria and cause foot diseases, further affecting the health of the staff.

[0004] To this end, we provide arc protection boots to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an arc-proof boot, which solves the problem that the materials used in the arc-proof boots in the prior art cannot effectively resist the high temperature and current generated by the arc through the cooperation of the boot surface, the boot shaft and the boot sole.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention provides arc-proof boots, comprising a boot upper, wherein the top of the boot upper is fixedly connected to a boot shaft, and the bottom of the boot upper is fixedly connected to a boot sole. The boot upper adopts a composite structure, and from the outside to the inside, an arc shielding layer, a heat-insulating buffer layer and a comfortable lining layer are arranged in sequence. The boot sole comprises an anti-skid and wear-resistant layer, the top of the anti-skid and wear-resistant layer is fixedly connected to an insulating layer, and the top of the insulating layer is fixedly connected to a shock-absorbing layer. The boot shaft comprises an outer protective layer, the inner wall of the outer protective layer is fixedly connected to an inner protective layer, and the inner wall of the inner protective layer is fixedly connected to an inner lining structure layer. The height of the boot shaft is designed according to ergonomics, can effectively cover the calf part, and provide additional protection for the legs. The height of the boot shaft is adjusted after testing the legs of people of different heights. The size is obtained through big data statistical analysis to ensure that it is suitable for most workers. The anti-slip and wear-resistant layer on the sole of the boot makes the anti-arc boots also have anti-slip and wear-resistant functions. The reflective design of the boot shaft improves safety in low-light environments and meets the needs of different working environments. Whether on slippery ground, rough work sites, or in dimly lit places, the anti-arc boots can provide reliable protection for workers. In terms of material selection, such as the use of natural bamboo fiber fabrics, it not only meets functional needs, but also has certain environmental protection characteristics. Bamboo fiber is a renewable resource, and its growth process is environmentally friendly. In addition, the overall durable design of the boot shaft extends the service life of the product.

[0008] The present invention is further configured as follows: the arc shielding layer is formed by a blend of metal fiber and high-performance synthetic fiber, with the metal fiber content being 30% and the high-performance synthetic fiber content being 70%. The high-performance synthetic fiber is made of aramid flame-retardant fiber, and the blending process adopts air-jet spinning technology. The metal fiber is selected because it has good electrical conductivity, can effectively guide the arc current, disperse the arc energy, and prevent direct damage to the human body by the arc. The aramid flame-retardant fiber has high strength, high modulus and good wear resistance. The ceramic fiber has the characteristics of low thermal conductivity and high melting point, and can effectively block the high temperature generated by the arc from being transmitted to the feet.

[0009] The present invention is further configured such that the thermal insulation buffer layer is composited with ceramic fiber and polyurethane foam, the polyurethane foam has an open-pore structure, the thickness of the thermal insulation buffer layer is 5 mm, the polyurethane foam has an open-pore structure, has good buffering performance, reduces the impact force when the staff walks, and improves wearing comfort. The thickness of the thermal insulation buffer layer is 5 mm, which can ensure the thermal insulation effect without making the boot surface too thick.

[0010] The present invention is further configured as follows: the comfortable lining layer is made of natural bamboo fiber fabric, the bamboo fiber has a porous structure, and an antibacterial agent material is added therein, the antibacterial agent material is a nano-silver antibacterial agent, and the amount of the nano-silver antibacterial agent added is 0.5%-1% of the weight of the bamboo fiber fabric. The bamboo fiber has a unique porous structure, which makes it have good air permeability and moisture absorption, and can quickly absorb foot sweat and dissipate it to keep the feet dry and comfortable. At the same time, the natural antibacterial substances contained in the bamboo fiber give it certain antibacterial and deodorizing functions. On this basis, in order to further enhance the antibacterial effect, the nano-silver antibacterial agent is added. The nano-silver antibacterial agent has high-efficiency and long-lasting antibacterial properties, and has a significant inhibitory effect on a variety of bacteria and fungi.

[0011] The present invention is further configured such that the anti-skid and wear-resistant layer is made of nitrile rubber, and has anti-skid patterns on its surface, which are designed to be wavy. The anti-skid and wear-resistant layer is formed by an injection molding process. Nitrile rubber has good wear resistance and oil resistance, and is suitable for various complex terrains and working environments. The surface is provided with anti-skid patterns, which are designed to be wavy. The wavy patterns can increase the friction with the ground, provide reliable grip, and prevent workers from slipping.

[0012] The present invention is further configured such that the insulating layer adopts an insulating rubber material with an insulation resistance of not less than 10¹²Ω, the insulating rubber material is ethylene propylene rubber, and is bonded to the anti-slip and wear-resistant layer. The insulating layer adopts an insulating rubber material with an insulation resistance of not less than 10¹²Ω, which can effectively prevent the current from being transmitted to the human body through the sole of the boot and enhance the arc protection effect. The insulating rubber material is ethylene propylene rubber, and by adding specific insulating fillers and additives, and through processes such as internal mixing and open mixing, a rubber sheet with high insulation performance is made.

[0013] The present invention is further configured such that the shock absorbing layer is made of EVA material, the thickness of the shock absorbing layer is 8 mm, and the EVA material is pressed onto the insulating layer through a compression molding process. The EVA material has good elasticity and cushioning properties, which further reduces the impact force during walking and improves wearing comfort.

[0014] The present invention is further configured such that the outer protective layer adopts the same metal fiber and aramid flame retardant fiber blended fabric as the arc shielding layer of the boot upper, and the inner protective layer and material of the boot shaft and the manufacturing process of the inner lining structure layer are consistent with the corresponding layer of the boot upper. The outer protective layer adopts the same metal fiber and aramid flame retardant fiber blended fabric as the arc shielding layer of the boot upper, continues the arc protection function, ensures that the calf part can also resist the hazards of electric arc, is consistent with the corresponding layer of the boot upper, and ensures overall comfort and heat insulation.

[0015] The present invention is further configured such that the upper edge of the boot shaft is inlaid with a reflective strip, the reflective strip is made of high-brightness reflective material, the inlay of the reflective strip is welded by ultrasonic welding technology, and the reflective strip is made of high-brightness reflective material. In a dim working environment, the reflective strip can effectively reflect light, improve the visibility of the staff, and reduce the risk of accidents.

[0016] The manufacturing process of arc protection boots includes the following steps: S1: Arc shielding layer preparation: The two fibers are blended on an air spinning machine at a spinning speed of 8000 rpm with a ratio of 30% metal fiber and 70% aramid flame retardant fiber to obtain arc shielding layer fabric; Preparation of thermal insulation buffer layer: First, the ceramic fiber raw yarn is loosened and combed to form a uniform fiber felt, and then the polyurethane foam raw material prepared according to 100 parts of polyether polyol, 50 parts of isocyanate, 1 part of catalyst and 3 parts of foaming agent is injected into the ceramic fiber felt through a high-pressure foaming process at 120°C and 0.5MPa to form a thermal insulation buffer layer with a thickness of 5mm; Production of comfortable inner lining: natural bamboo fiber fabric is selected. During the fabric finishing process, the nano-silver antibacterial agent is prepared into a solution with a concentration of 0.8%. The antibacterial agent is evenly attached to the surface of the bamboo fiber through the padding process. The padding liquid carrying rate is controlled at 70%. Then it is dried at 100℃ for 30 minutes and then baked at 150℃ for 15 minutes to make the antibacterial agent and bamboo fiber firmly combined. After that, according to the pre-designed template, laser cutting technology is used, with the laser power set to 30W and the cutting speed set to 500mm / min, and it is cut into a suitable size as a comfortable inner lining; The arc shielding layer, the heat-insulating buffer layer and the comfortable lining layer are laminated together in sequence through a hot-pressing composite process at 150°C, 2MPa and pressure for 30 seconds to form a boot upper; S2: Preparation of anti-skid and wear-resistant layer: The nitrile rubber is plasticized at 60°C for 15 minutes to improve its plasticity and fluidity, and then the mold is heated to 180°C and maintained for 10 minutes to form an anti-skid and wear-resistant layer with wavy anti-skid patterns through injection molding; Insulation layer preparation: Add 100 parts of EPDM rubber, 30 parts of insulating filler and 5 parts of additives into an internal mixer, mix at 150°C for 10 minutes, then thin-pass 5 times and triangle-wrap 3 times on an open mixer to make an insulating rubber sheet, which is then laminated on the anti-slip and wear-resistant layer to ensure that the insulation resistance is not less than 10¹²Ω; Shock-absorbing layer production: preheat the EVA material at 80°C for 10 minutes, and then form an 8mm thick shock-absorbing layer on the insulating layer through a compression molding process at 150°C and 5MPa to complete the production of the boot sole; S3: The same blended fabric as the arc shielding layer of the boot is cut into a suitable size as the outer sheath; Production of inner protective layer and inner lining structure layer: according to the production process of the corresponding layer of the boot surface, the inner protective layer and inner lining structure layer of the boot shaft are produced respectively, and are bonded with the outer protective layer; Reflective strip inlay: Ultrasonic welding technology is used, with a welding power of 300W and a welding time of 0.5 seconds per point. 5mm wide reflective strips are firmly welded at the upper and lower edges of the boot shaft. S4: Assemble the prepared boot upper, boot sole and boot shaft through a gluing process. The boot upper and boot sole are combined by a special hot vulcanization process. First, apply a layer of epoxy resin glue on the edge of the boot upper. Then, place the boot sole in a special mold and align it precisely with the edge of the boot upper. The mold is heated and pressurized by a hot vulcanization equipment. The heating temperature is controlled at 180-200℃, and the pressure is maintained at 3-5MPa for 15-20 minutes. In this process, the epoxy resin glue penetrates and fuses with the arc shielding layer of the boot upper and the insulating layer of the boot sole to form a tight whole.

[0017] The present invention has the following beneficial effects.

[0018] 1. The present invention can effectively resist the high temperature, current and shock wave of the electric arc through the unique multi-layer composite structure of the boot upper, especially the reasonable ratio of metal fiber and high-performance synthetic fiber in the arc shielding layer, and the insulating layer design of the boot sole, so as to provide comprehensive and reliable protection for the feet. The boot shaft adopts the same arc shielding material as the boot upper, which further expands the protection range. This efficient arc protection performance can significantly reduce the risk of injury to workers in arc accidents and provide strong protection for their life safety. Due to its comprehensive protective performance and comfortable design, the arc protection boots are suitable for a variety of industries with arc hazards, including but not limited to electricity, metallurgy, chemical industry, etc. Its versatility makes it more convenient for enterprises to purchase protective equipment, and there is no need to choose a variety of different types of protective boots for different positions and work scenes, which reduces procurement costs and management costs.

[0019] 2. The present invention reduces the impact force during walking and improves the comfort of wearing by setting up the heat-insulating buffer layer and the shock-absorbing layer. At the same time, the natural bamboo fiber fabric of the comfortable lining layer has good air permeability and moisture absorption, which keeps the feet dry and reduces discomfort. When wearing the anti-arc boots for a long time, the staff will not be distracted by foot discomfort, thereby improving work efficiency. After adding nano-silver antibacterial agent to the comfortable lining layer, the antibacterial and deodorizing function is significantly enhanced, which can more effectively inhibit the growth of bacteria and provide a healthier wearing environment for the staff. This not only helps to prevent foot diseases, but also reduces the discomfort caused by odor and improves the overall work comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for describing the embodiment are briefly introduced below.

[0021] Figure 1 This is the front view of the arc protection boots.

[0022] Figure 2 This is a structural diagram of the shoe surface in the arc protection shoe.

[0023] Figure 3 This is a structural diagram of the sole of the arc protection boot.

[0024] Figure 4 This is a structural diagram of the boot shaft in arc protection boots.

[0025] Figure 5 This is the production flow chart of arc protection boots.

[0026] In the attached drawings: 1. Boot upper; 101. Arc shielding layer; 102. Heat insulation buffer layer; 103. Comfort lining layer; 2. Boot shaft; 201. Outer protective layer; 202. Inner protective layer; 203. Inner lining structure layer; 3. Boot sole; 301. Anti-skid and wear-resistant layer; 302. Insulating layer; 303. Shock-absorbing layer; 4. Reflective strip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0028] See also Figure 1-5 The present invention is an arc-proof boot, comprising a boot upper 1, a boot shaft 2 being fixedly connected to the top of the boot upper 1, a boot sole 3 being fixedly connected to the bottom of the boot upper 1, the boot upper 1 adopts a composite structure, and from the outside to the inside are an arc shielding layer 101, a heat-insulating buffer layer 102 and a comfortable lining layer 103, the boot sole 3 comprises an anti-skid and wear-resistant layer 301, an insulating layer 302 being fixedly connected to the top of the anti-skid and wear-resistant layer 301, a shock-absorbing layer 303 being fixedly connected to the top of the insulating layer 302, the boot shaft 2 comprises an outer protective layer 201, an inner protective layer 202 being fixedly connected to the inner wall of the outer protective layer 201, and an inner lining structure layer 203 being fixedly connected to the inner wall of the inner protective layer 202.

[0029] Specifically: the height of the boot shaft 2 is designed according to ergonomics, which can effectively cover the calf part and provide additional protection for the legs. The height of the boot shaft 2 is obtained through big data statistical analysis of the leg sizes of people of different heights to ensure that it is suitable for most workers. The anti-slip and wear-resistant layer 301 of the sole 3 makes the anti-arc boots also have anti-slip and wear-resistant functions. The reflective design of the boot shaft 2 improves the safety in low-light environments and meets the needs of different working environments. Whether on slippery ground, rough work sites, or in dimly lit places, the anti-arc boots can provide reliable protection for workers. In terms of material selection, such as the use of natural bamboo fiber fabrics, it not only meets functional needs, but also has certain environmental protection characteristics. Bamboo fiber is a renewable resource and its growth process is environmentally friendly. In addition, the overall durable design of the boot shaft 2 extends the service life of the product. Embodiment 2

[0030] See also Figure 1-5 On the basis of the first embodiment, the arc shielding layer 101 is blended by metal fiber and high-performance synthetic fiber, the metal fiber content is 30%, the high-performance synthetic fiber content is 70%, the high-performance synthetic fiber is aramid flame-retardant fiber, the blending process adopts air-spinning technology, the heat-insulating buffer layer 102 is composited by ceramic fiber and polyurethane foam, the polyurethane foam has an open-pore structure, the thickness of the heat-insulating buffer layer 102 is 5 mm, the comfortable lining layer 103 is made of natural bamboo fiber fabric, the bamboo fiber has a porous structure, and an antibacterial agent material is added therein, the antibacterial agent material is a nano-silver antibacterial agent, and the amount of the nano-silver antibacterial agent added is 0.5%-1% of the weight of the bamboo fiber fabric, the anti-slip and wear-resistant layer 301 is made of nitrile rubber, and the surface is provided with anti-slip texture, and the texture design is wave The anti-skid and wear-resistant layer 301 is wave-shaped and formed by an injection molding process. The insulating layer 302 adopts an insulating rubber material with an insulation resistance of not less than 10¹²Ω. The insulating rubber material is ethylene-propylene rubber and is bonded to the anti-skid and wear-resistant layer 301. The shock-absorbing layer 303 adopts EVA material with a thickness of 8mm. The EVA material is pressed on the insulating layer 302 by a compression molding process. The outer protective layer 201 adopts the same metal fiber and aramid flame-retardant fiber blended fabric as the arc shielding layer 101 of the boot upper 1. The inner protective layer 202 of the boot shaft 2 and the material and the manufacturing process of the lining structure layer 203 are consistent with the corresponding layer of the boot upper 1. The upper edge of the boot shaft 2 is inlaid with a reflective strip 4, which is made of high-brightness reflective material and is inlaid with ultrasonic welding technology.

[0031] Specifically: metal fiber is selected because it has good conductivity, can effectively guide the arc current, disperse the arc energy, and prevent the arc from directly harming the human body. Aramid flame retardant fiber has high strength, high modulus and good wear resistance. Ceramic fiber has the characteristics of low thermal conductivity and high melting point, which can effectively block the high temperature generated by the arc from being transmitted to the feet. Polyurethane foam has an open-cell structure and good cushioning performance, which can reduce the impact force when the staff walks and improve wearing comfort. The thickness of the thermal insulation buffer layer 102 is 5mm, which can not only ensure the thermal insulation effect, but also will not make the boot surface 1 too thick. Bamboo fiber has a unique porous structure, which makes it have good air permeability and moisture absorption, can quickly absorb foot sweat and dissipate it, and keep the feet dry and comfortable. At the same time, the natural antibacterial substances contained in bamboo fiber make it have certain antibacterial and deodorizing functions. On this basis, in order to further enhance the antibacterial effect, nano silver antibacterial agent is added. Nano silver antibacterial agent has high efficiency and lasting antibacterial performance, and has significant inhibitory effect on a variety of bacteria and fungi. Nitrile rubber has good wear resistance and oil resistance, and is suitable for The surface is provided with anti-skid patterns for various complex terrains and working environments. The patterns are designed to be wavy. The wavy patterns can increase the friction with the ground, provide reliable grip, and prevent workers from slipping. The insulating layer 302 is made of insulating rubber material with an insulation resistance of not less than 10¹²Ω, which can effectively prevent the current from being transmitted to the human body through the sole 3 and enhance the arc protection effect. The insulating rubber material is made of ethylene propylene rubber. By adding specific insulating fillers and additives, and through processes such as internal mixing and open mixing, a rubber sheet with high insulation performance is made. The EVA material has good elasticity and cushioning properties, which further reduces the impact force during walking and improves wearing comfort. The outer sheath 201 is made of the same metal fiber and aramid flame-retardant fiber blended fabric as the arc shielding layer 101 of the boot upper 1, continuing the arc protection function, ensuring that the calf part can also resist the arc hazard, and is consistent with the corresponding layer of the boot upper 1 to ensure overall comfort and heat insulation. The reflective strip 4 is made of high-brightness reflective material, which can effectively reflect light in a dark working environment, improve the visibility of workers, and reduce the risk of accidents. Embodiment 3

[0032] The manufacturing process of arc protection boots includes the following steps: S1: arc shielding layer 101 manufacturing: according to the ratio of 30% metal fiber content and 70% aramid flame retardant fiber content, the two fibers are blended on an air spinning machine at a spinning speed of 8000 rpm to obtain arc shielding layer 101 fabric; Preparation of the heat-insulating buffer layer 102: First, the ceramic fiber raw yarn is loosened and combed to form a uniform fiber felt, and then a polyurethane foam raw material prepared according to 100 parts of polyether polyol, 50 parts of isocyanate, 1 part of catalyst, and 3 parts of foaming agent is injected into the ceramic fiber felt through a high-pressure foaming process at 120° C. and 0.5 MPa to form a heat-insulating buffer layer 102 with a thickness of 5 mm; Preparation of the comfortable inner lining layer 103: natural bamboo fiber fabric is selected. During the fabric finishing process, the nano-silver antibacterial agent is prepared into a solution with a concentration of 0.8%. The antibacterial agent is uniformly attached to the surface of the bamboo fiber through a padding process. The padding liquid carrying rate is controlled at 70%. Then, it is dried at 100°C for 30 minutes and then baked at 150°C for 15 minutes to firmly combine the antibacterial agent with the bamboo fiber. After that, according to a pre-designed template, laser cutting technology is used, with the laser power set to 30W and the cutting speed set to 500mm / min, and the fabric is cut into a suitable size as the comfortable inner lining layer 103; The arc shielding layer 101, the heat insulating buffer layer 102 and the comfortable lining layer 103 are sequentially bonded together through a hot pressing composite process at 150° C., 2 MPa, and a holding pressure of 30 seconds to form a boot upper 1; S2: Preparation of the anti-skid and wear-resistant layer 301: The nitrile rubber is plasticized at 60° C. for 15 minutes to improve its plasticity and fluidity, and then the mold is heated to 180° C. and maintained for 10 minutes to form the anti-skid and wear-resistant layer 301 with wavy anti-skid patterns through an injection molding process; Preparation of the insulating layer 302: 100 parts of EPDM rubber, 30 parts of insulating filler and 5 parts of additives are added to an internal mixer, and mixed at 150°C for 10 minutes. Then, the mixture is thin-passed 5 times and triangularly packaged 3 times on an open mixer to form an insulating rubber sheet, which is then laminated on the anti-skid and wear-resistant layer 301 to ensure that the insulation resistance is not less than 10¹²Ω; Preparation of shock-absorbing layer 303: preheat the EVA material at 80°C for 10 minutes, and then form a shock-absorbing layer 303 with a thickness of 8 mm on the insulating layer 302 through a compression molding process at 150°C and 5 MPa, thereby completing the preparation of the boot sole 3; S3: Cut the same blended fabric as the arc shielding layer 101 of the boot upper 1 into a suitable size as the outer protective layer 201; Manufacturing of the inner protective layer 202 and the inner lining structure layer 203: According to the manufacturing process of the corresponding layer of the boot upper 1, the inner protective layer 202 and the inner lining structure layer 203 of the boot shaft 2 are manufactured respectively, and are bonded to the outer protective layer 201; Inlaying of reflective strips 4: Using ultrasonic welding technology, the welding power is 300W, and the welding time is 0.5 seconds per point. The reflective strips 4 with a width of 5mm are firmly welded at the corresponding positions at the upper and lower edges of the boot shaft 2; S4: Assemble the prepared upper 1, sole 3 and shaft 2 through a gluing process. The upper 1 and sole 3 are combined by a special hot vulcanization process. First, a layer of epoxy resin glue is applied to the edge of the upper 1. Then, the sole 3 is placed in a special mold and precisely aligned with the edge of the upper 1. The mold is heated and pressurized by a hot vulcanization device. The heating temperature is controlled at 180-200°C, and the pressure is maintained at 3-5MPa for 15-20 minutes. During this process, the epoxy resin glue penetrates and fuses with the arc shielding layer 101 of the upper 1 and the insulating layer 302 of the sole 3 to form a tight whole.

[0033] Epoxy resin has excellent electrical insulation properties, with an insulation resistance of up to 10¹ 5 Ω or more, which can effectively prevent arc current from passing through the joint between the surface and the bottom. It has good chemical corrosion resistance and can resist the erosion of common acids, alkalis and organic solvents, ensuring the stability of the adhesive performance in complex chemical environments. It has excellent heat resistance and can withstand high temperatures above 300°C without performance degradation. At the same time, it has excellent bonding performance and can be tightly bonded to the sole 3 material at high temperatures.

[0034] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. An arc protection boot, comprising a boot surface (1), characterized in that: The top of the boot upper (1) is fixedly connected to a boot shaft (2), and the bottom of the boot upper (1) is fixedly connected to a boot sole (3); the boot upper (1) adopts a composite structure, and comprises, from the outside to the inside, an arc shielding layer (101), a heat insulation buffer layer (102), and a comfortable lining layer (103); The boot sole (3) comprises an anti-skid and wear-resistant layer (301), the top of the anti-skid and wear-resistant layer (301) is fixedly connected to an insulating layer (302), and the top of the insulating layer (302) is fixedly connected to a shock-absorbing layer (303); The boot shaft (2) comprises an outer protective layer (201), the inner wall of the outer protective layer (201) is fixedly connected to an inner protective layer (202), and the inner wall of the inner protective layer (202) is fixedly connected to an inner lining structure layer (203).

2. The arc protection boot according to claim 1, characterized in that: The arc shielding layer (101) is formed by blending metal fibers and high-performance synthetic fibers, wherein the metal fiber content is 30% and the high-performance synthetic fiber content is 70%. The high-performance synthetic fiber is aramid flame-retardant fiber, and the blending process adopts air-jet spinning technology.

3. The arc protection boot according to claim 1, characterized in that: The heat-insulating buffer layer (102) is formed by compounding ceramic fibers and polyurethane foam, the polyurethane foam has an open-cell structure, and the thickness of the heat-insulating buffer layer (102) is 5 mm.

4. The arc protection boot according to claim 1, characterized in that: The comfortable inner lining layer (103) is made of natural bamboo fiber fabric. The bamboo fiber has a porous structure. Antibacterial material is added inside the bamboo fiber fabric. The antibacterial material is a nano-silver antibacterial agent. The amount of the nano-silver antibacterial agent added is 0.5%-1% of the weight of the bamboo fiber fabric.

5. The arc protection boot according to claim 1, characterized in that: The anti-skid and wear-resistant layer (301) is made of nitrile rubber and has anti-skid patterns on its surface. The patterns are designed to be wavy. The anti-skid and wear-resistant layer (301) is formed by an injection molding process.

6. The arc protection boot according to claim 1, characterized in that: The insulating layer (302) is made of insulating rubber material, the insulation resistance of which is not less than 10¹²Ω; the insulating rubber material is ethylene propylene rubber, and is bonded to the anti-slip and wear-resistant layer (301).

7. The arc protection boot according to claim 1, characterized in that: The shock-absorbing layer (303) is made of EVA material, and the thickness of the shock-absorbing layer (303) is 8 mm. The EVA material is pressed onto the insulating layer (302) through a compression molding process.

8. The arc protection boot according to claim 1, characterized in that: The outer protective layer (201) is made of the same metal fiber and aramid flame retardant fiber blended fabric as the arc shielding layer (101) of the boot upper (1), and the inner protective layer (202) of the boot shaft (2) and the material and manufacturing process of the lining structure layer (203) are consistent with the corresponding layers of the boot upper (1).

9. The arc protection boot according to claim 1, characterized in that: The upper edge of the boot shaft (2) is inlaid with a reflective strip (4), the reflective strip (4) is made of a high-brightness reflective material, and the reflective strip (4) is inlaid by welding using ultrasonic welding technology.

10. The manufacturing process of the arc protection shoe according to any one of claims 1 to 9, characterized in that: The steps include: S1: arc shielding layer (101) preparation: the two fibers are blended on an air spinning machine at a spinning speed of 8000 rpm in a ratio of 30% metal fiber content and 70% aramid flame retardant fiber content to obtain arc shielding layer (101) fabric; Preparation of the heat insulating buffer layer (102): firstly, the ceramic fiber raw yarn is loosened and combed to form a uniform fiber felt, and then a polyurethane foam raw material prepared according to 100 parts of polyether polyol, 50 parts of isocyanate, 1 part of catalyst, and 3 parts of foaming agent is injected into the ceramic fiber felt through a high-pressure foaming process under the conditions of 120° C. and 0.5 MPa to form a heat insulating buffer layer (102) with a thickness of 5 mm; Preparation of comfortable inner lining layer (103): natural bamboo fiber fabric is selected, and during the fabric finishing process, nano silver antibacterial agent is prepared into a solution with a concentration of 0.8%, and the antibacterial agent is uniformly attached to the surface of bamboo fiber through a padding process, and the padding liquid carrying rate is controlled at 70%, and then dried at 100°C for 30 minutes, and then baked at 150°C for 15 minutes to make the antibacterial agent and bamboo fiber firmly bonded, and then cut into a suitable size according to a pre-designed template using laser cutting technology, setting the laser power to 30W and the cutting speed to 500mm / min, as the comfortable inner lining layer (103); The arc shielding layer (101), the heat insulating buffer layer (102) and the comfortable lining layer (103) are sequentially bonded together through a hot pressing composite process at 150° C., 2 MPa and a holding pressure of 30 seconds to form a boot upper (1); S2: Preparation of the anti-skid and wear-resistant layer (301): plasticizing the nitrile rubber at 60° C. for 15 minutes to improve its plasticity and fluidity, and then heating the mold to 180° C. and maintaining it for 10 minutes to form the anti-skid and wear-resistant layer (301) with a wavy anti-skid pattern through an injection molding process; Preparation of the insulating layer (302): 100 parts of ethylene propylene rubber, 30 parts of insulating filler and 5 parts of additives are added to an internal mixer, and mixed at 150°C for 10 minutes, and then thin-passed 5 times and triangularly packaged 3 times on an open mixer to prepare an insulating rubber sheet, which is then laminated on the anti-skid and wear-resistant layer (301) to ensure that the insulation resistance is not less than 10¹²Ω; Preparation of the shock absorbing layer (303): preheating the EVA material at 80°C for 10 minutes, and then forming a shock absorbing layer (303) with a thickness of 8 mm on the insulating layer (302) through a compression molding process at 150°C and 5 MPa, thereby completing the preparation of the boot sole (3); S3: using the same blended fabric as the arc shielding layer (101) of the boot upper (1) and cutting it into a suitable size as the outer protective layer (201); Manufacturing the inner protective layer (202) and the inner lining structure layer (203): manufacturing the inner protective layer (202) and the inner lining structure layer (203) of the boot shaft (2) according to the manufacturing process of the corresponding layers of the boot upper (1), and laminating them with the outer protective layer (201); Inlaying of reflective strips (4): using ultrasonic welding technology, with a welding power of 300W and a welding time of 0.5 seconds per point, a 5 mm wide reflective strip (4) is firmly welded at the corresponding positions at the upper and lower edges of the boot shaft (2); S4: The manufactured boot upper (1), boot sole (3) and boot shaft (2) are assembled by gluing. The boot upper (1) and the boot sole (3) are bonded by a special hot vulcanization process. First, a layer of epoxy resin glue is applied to the edge of the boot upper (1). Then, the boot sole (3) is placed in a special mold and precisely aligned with the edge of the boot upper (1). The mold is heated and pressurized by a hot vulcanization device. The heating temperature is controlled at 180-200° C. and the pressure is maintained at 3-5 MPa for 15-20 minutes. During this process, the epoxy resin glue and the arc shielding layer (101) of the boot upper (1) and the insulating layer (302) of the boot sole (3) penetrate and fuse with each other to form a tight whole.

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