Manufacturing method of arc-proof insulating gloves
By using a double-knitted structure and modified materials, the arc-proof insulating gloves have improved arc resistance, insulation, and abrasion resistance, solving the problems of high-temperature carbonization, poor breathability, and insufficient abrasion resistance of traditional gloves, thus achieving higher safety and durability.
Patent Information
- Application Number
- CN202511170780.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2025-11-11
AI Technical Summary
Existing arc-proof insulating gloves have shortcomings in terms of arc protection, insulation, and abrasion resistance. Traditional coatings are prone to carbonization, have poor breathability, and uneven abrasion layers, resulting in insufficient safety and durability.
It adopts a double-layer knitted structure, with an outer layer of aramid 1313 fiber and an inner layer of cotton fiber blended together. Modified carbon nanotubes reinforce the latex coating, and a nano-silica coating strengthens the wear-prone parts. The conductive fiber mesh layer balances the electric field. The material performance is improved through modification and thermosetting treatment.
This technology achieves multi-dimensional performance improvements for gloves, including enhanced arc resistance, superior insulation, improved abrasion resistance, and extended service life.
Smart Images
Figure BDA0005557972610000131
Abstract
Description
Technical Field
[0001] This invention relates to the field of insulating gloves, specifically a method for manufacturing arc-resistant insulating gloves. Background Technology
[0002] In high-risk work areas such as power maintenance, metallurgical smelting, and chemical welding, arc-resistant insulating gloves are critical protective equipment for ensuring the safety of operators, and their performance directly affects the health and lives of workers. These gloves must simultaneously possess excellent arc-breakdown protection, reliable insulation performance, and outstanding abrasion resistance to effectively resist potential risks of arc discharge, current leakage, and mechanical wear in the working environment.
[0003] Currently, arc flash protection gloves on the market still face many problems in practical applications. In terms of arc flash protection, traditional nitrile rubber latex coatings primarily rely on physical barriers to resist electric arcs. However, when an arc occurs, the instantaneous release of high-temperature energy reaches thousands of degrees Celsius, making ordinary nitrile rubber latex coatings highly susceptible to carbonization at such high temperatures. Carbonized coatings not only fail to provide protection but also form holes, allowing the arc to easily penetrate the glove. Furthermore, to enhance arc flash protection, some gloves incorporate materials such as carbon nanotubes. However, due to the uneven dispersion of carbon nanotubes in the latex, conductive defects form in the coating. These defects prevent the rapid dissipation of arc energy, further reducing the glove's arc flash protection performance and seriously threatening the safety of workers.
[0004] Existing technologies for manufacturing gloves also face challenges in balancing insulation and breathability. To achieve higher insulation standards, the coating thickness is often increased. However, this thickening significantly reduces breathability. During prolonged work, hands become hot and sweaty due to lack of ventilation, easily leading to hand fatigue and potentially affecting the glove's insulation performance. Sweat also promotes the growth of bacteria. Furthermore, the weak bond between the inner fiber layer and the outer latex layer allows air gaps to form during use. These air gaps act as hidden "conductive channels," providing conditions for current leakage and greatly weakening the glove's overall insulation performance.
[0005] In terms of abrasion resistance, traditional arc flash protective gloves also have significant shortcomings. The fingertips and other areas of the glove frequently come into contact with various tools and objects during operation, making them high-frequency abrasion zones. However, existing gloves often lack targeted reinforcement treatment for these critical areas, and traditional coatings are prone to peeling off after repeated friction. Furthermore, the nanofillers added to the abrasion-resistant layer, due to uneven dispersion, lead to unstable mechanical properties of the layer. Some areas are too strong, while others are too thin, making the gloves prone to localized damage during use, significantly shortening their lifespan, increasing usage costs, and creating safety hazards.
[0006] To address the aforementioned issues, this invention aims to develop a superior arc-resistant insulating glove through composite material design and process optimization, thereby significantly improving the glove's safety and durability in complex working environments. Summary of the Invention
[0007] To address the problems in the prior art, the present invention provides a method for manufacturing arc-resistant insulating gloves.
[0008] The technical solution adopted by this invention to solve its technical problem is: a method for manufacturing arc-resistant insulating gloves, comprising the following steps:
[0009] Prepare double-layer knitted gloves, wherein the double-layer composite structure includes an outer layer knitted from aramid 1313 fibers and an inner layer made of a 2:1 blend of cotton fibers and acrylic fibers;
[0010] To prepare a modified nitrile rubber latex coating, 16-18 wt% modified carbon nanotubes were added to the nitrile rubber latex.
[0011] A modified latex slurry is obtained by mixing nitrile latex with a solid content of 50%-55% with magnesium oxide, sulfur, and tetramethylthiuram disulfide in a ratio of 100:3-4:1-2:0.5-0.8.
[0012] Double-layer knitted gloves are immersed in modified latex slurry and vulcanized at 80-90℃ for 5-6 hours to form a dense coating;
[0013] A nano-silica coating is added to easily worn areas such as the fingertips of gloves through a secondary impregnation process. In the secondary impregnation process, the solid content of the impregnation liquid for the nano-silica coating is 10%-12%, and the coating thickness reaches 1.2mm.
[0014] After adding the nano-silica coating, the coating is subjected to heat curing treatment at a temperature of 100-116℃ for 1-2 hours.
[0015] As a further technical solution: the outer layer has 14-18 needles, and the inner layer has 16-20 needles.
[0016] As a further technical solution: Before immersion, the double-knitted gloves are pre-dried at a temperature of 60-70℃ for 1-2 hours.
[0017] As a further technical solution: after vulcanization, the gloves with the coating are washed with water at a temperature of 40-50℃ for 10-20 minutes.
[0018] As a further technical solution: the method for preparing modified carbon nanotubes is as follows:
[0019] Carbon nanotubes were mixed with 1,3-bis(aminopropane)tetramethyldisiloxane and formaldehyde solution in a ratio of 20-25g:3-4g:80-90g, and the mixture was reacted at 50-70℃ for 3-4 hours to modify the surface. Then, ultrasonic-assisted ball milling was used to treat the surface. Finally, the mixture was filtered, washed and dried to obtain the final product.
[0020] The formaldehyde solution has a mass fraction of 20%.
[0021] As a further technical solution: the ultrasonic frequency of the ultrasonic-assisted ball milling method is 35-40kHz, the ball milling speed is 300-500r / min, and the ball milling time is 3-5 hours.
[0022] As a further technical solution: when preparing a double-layer composite structure glove, a conductive fiber mesh layer is provided between the outer layer and the inner layer.
[0023] As a further technical solution, the linear density of the conductive fiber mesh layer is 14-20 dtex, and the mesh spacing is 6-10 mm.
[0024] As a further technical solution: In the secondary impregnation process, a coupling agent is added to the impregnation solution of the nano-silica coating. The coupling agent is a silane coupling agent, and the amount added is 1-1.6% of the mass of the impregnation solution.
[0025] The beneficial effects of this invention are:
[0026] This invention achieves multi-dimensional improvements in the gloves' anti-arc, insulation, and abrasion resistance through innovative material systems and structural design.
[0027] The synergistic protection of the double-layer knitted structure is achieved through two layers. The outer layer acts as the first line of defense, providing protection against electric arcs and offering mechanical support. Aramid 1313 fiber boasts high-temperature resistance up to 370℃, and its strong hydrogen bonds between molecular chains resist the high-temperature impact of electric arcs, preventing fiber melting and carbonization. The high-density knitted structure forms a dense mesh, effectively preventing electric arc penetration. The inner layer enhances wearing comfort and aids in insulation and static discharge. A blend of cotton and acrylic fibers forms a porous, moisture-absorbing network that absorbs hand sweat, reducing interfacial resistance and preventing insulation failure due to moisture. The medium-density knitted structure retains an air layer, further enhancing the dielectric strength of the inner layer through air insulation. The middle layer, a conductive fiber mesh, constructs a static dissipation channel, balancing the electric field distribution. Conductive fibers are embedded between the inner and outer layers at a mesh spacing of 6-10mm, forming a uniform conductive network that quickly dissipates locally accumulated charges to the ground, preventing electric arc breakdown caused by concentrated electric fields. The mesh structure also strengthens the interfacial bonding between the inner and outer layers, inhibiting interlayer delamination.
[0028] The anti-arc resistance of nitrile rubber latex coating is enhanced by modifying the dispersion of carbon nanotubes, thereby improving the coating's conductivity uniformity and mechanical strength. Surface modification with 1,3-bis(aminopropane)tetramethyldisiloxane and grafting of amino groups onto the carbon nanotube surface create hydrogen bonds with the cyano groups in the nitrile rubber latex. After ultrasonic-assisted ball milling at 35-40 kHz, the dispersed particle size is reduced to 50-80 nm, uniformly distributed within the latex matrix, forming a continuous conductive pathway that rapidly dissipates energy via thermal conduction during arc impact. Optimized crosslinking of the vulcanization system constructs a dense network structure, enhancing resistance to arc erosion. Magnesium oxide acts as a vulcanization accelerator, accelerating the crosslinking reaction between double bonds and sulfur in the nitrile rubber latex, forming a crosslinking density of 3-5 crosslinking points / nm. 2 The three-dimensional network structure; tetramethylthiuram disulfide, as an ultra-fast curing agent, shortens the curing time to 5-6 hours, so that the coating forms a sealed layer at 80-90℃, blocking the intrusion of electric arc energy.
[0029] Nano-silica wear-resistant coatings improve the friction resistance of easily worn areas such as fingertips. Thermosetting synergistically enhances the interfacial adhesion of the coating and inhibits crack propagation. The 100-116℃ thermosetting treatment fully hydrolyzes the silane coupling agent, forming a 5-10nm transition layer at the interface between nano-silica and the latex. Simultaneously, it promotes further cross-linking of the nitrile latex, significantly improving the adhesion between the wear-resistant layer and the substrate, avoiding the problem of easy peeling of traditional coatings.
[0030] This invention achieves excellent arc resistance and insulation performance, and improves wear resistance life through a four-level protection mechanism: a conductive grid to balance the electric field, an aramid outer layer to resist ablation, a latex coating to conduct energy, and a nano-inner layer to enhance wear resistance. Detailed Implementation
[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.
[0032] This invention provides a method for manufacturing arc-resistant insulating gloves, comprising the following steps:
[0033] Prepare double-layer knitted gloves, wherein the double-layer composite structure includes an outer layer knitted from aramid 1313 fibers and an inner layer blended from cotton fibers and acrylic fibers in a 2:1 ratio; the outer layer has 14-18 stitches and the inner layer has 16-20 stitches.
[0034] A modified nitrile rubber latex coating was prepared by adding 16-18 wt% modified carbon nanotubes to the nitrile rubber latex. The modified carbon nanotubes were prepared by mixing carbon nanotubes with 1,3-bis(aminopropane)tetramethyldisiloxane and formaldehyde solution (mass fraction 20%) in a ratio of 20-25 g: 3-4 g: 80-90 g, reacting at 50-70℃ for 3-4 hours for surface modification, followed by ultrasonic-assisted ball milling (ultrasonic frequency 35-40 kHz, ball milling speed 300-500 r / min, ball milling time 3-5 hours), and finally, after filtration, washing and drying, the coating was obtained.
[0035] A modified latex slurry is obtained by mixing nitrile latex with a solid content of 50%-55% with magnesium oxide, sulfur, and tetramethylthiuram disulfide in a ratio of 100:(3-4):(1-2):(0.5-0.8).
[0036] Before impregnating the double-layer knitted gloves, pre-dry them at a temperature of 60-70℃ for 1-2 hours.
[0037] Double-layer knitted gloves are immersed in modified latex slurry and vulcanized at 80-90℃ for 5-6 hours to form a dense coating;
[0038] After vulcanization, the gloves with the coating are washed with water at a temperature of 40-50℃ for 10-20 minutes.
[0039] A nano-silica coating is added to easily worn parts such as the fingertips of gloves through a secondary impregnation process. In the secondary impregnation process, the solid content of the impregnation solution for the nano-silica coating is 10%-12%, the coating thickness is 1.2mm, and a silane coupling agent is added to the impregnation solution for the nano-silica coating at a rate of 1-1.6% of the impregnation solution mass.
[0040] After adding the nano-silica coating, the coating is subjected to heat curing treatment at a temperature of 100-116℃ for 1-2 hours.
[0041] In the preparation of double-layer composite structure gloves, a conductive fiber mesh layer is provided between the outer layer and the inner layer. The linear density of the conductive fiber mesh layer is 14-20 dtex and the mesh spacing is 6-10 mm.
[0042] The materials and equipment used in this invention are all commercially available products in the field.
[0043] The technical solutions of this invention will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.
[0044] Example 1
[0045] Preparation of double-layer knitted gloves: the outer layer is made of aramid 1313 fiber with 14 needles; the inner layer is made of cotton fiber and acrylic fiber (2:1) blend with 16 needles; a conductive fiber mesh layer (linear density 14dtex, mesh spacing 10mm) is set between the outer and inner layers.
[0046] Preparation of modified carbon nanotubes: 20g of carbon nanotubes, 3g of 1,3-bis(aminopropane)tetramethyldisiloxane, and 80g of 20% formaldehyde solution were mixed and reacted at 50℃ for 3 hours. Then, the mixture was treated by ultrasonic-assisted ball milling at an ultrasonic frequency of 35kHz, a ball milling speed of 300r / min, and a ball milling time of 3 hours. Finally, the mixture was filtered, washed, and dried to obtain modified carbon nanotubes.
[0047] Preparation of modified latex slurry: Take 100g of nitrile latex with a solid content of 50%, add 3g of magnesium oxide, 1g of sulfur and 0.5g of tetramethylthiuram disulfide, mix evenly to obtain modified latex slurry.
[0048] Pre-drying and impregnation: The double-layer knitted gloves are pre-dried at 60°C for 1 hour; the pre-dried gloves are then immersed in modified latex slurry and vulcanized at 80°C for 5 hours, followed by washing at 40°C for 10 minutes.
[0049] Secondary impregnation and curing: Prepare an impregnation solution for the nano-silica coating (solid content 10%, silane coupling agent added at 1% of the impregnation solution mass), and add the nano-silica coating to easily worn parts such as the fingertips of the gloves through a secondary impregnation process, so that the coating thickness reaches 1.2mm; then the coating is subjected to heat curing treatment at 100℃ for 1 hour.
[0050] Example 2
[0051] Preparation of double-layer knitted gloves: the outer layer is made of aramid 1313 fiber with 16 needles; the inner layer is made of cotton fiber and acrylic fiber (2:1) blend with 18 needles; a conductive fiber mesh layer (linear density 17dtex, mesh spacing 8mm) is set between the outer and inner layers.
[0052] Preparation of modified carbon nanotubes: 23g of carbon nanotubes, 3.5g of 1,3-bis(aminopropane)tetramethyldisiloxane, and 85g of 20% formaldehyde solution were mixed and reacted at 65℃ for 3.5 hours. Then, the mixture was treated by ultrasonic-assisted ball milling at an ultrasonic frequency of 38kHz, a ball milling speed of 400r / min, and a ball milling time of 4 hours. Finally, the mixture was filtered, washed, and dried to obtain modified carbon nanotubes.
[0053] Preparation of modified latex slurry: Take 100g of nitrile latex with a solid content of 53%, add 3.5g of magnesium oxide, 1.5g of sulfur, and 0.6g of tetramethylthiuram disulfide, mix evenly to obtain modified latex slurry.
[0054] Pre-drying and impregnation: The double-layer knitted gloves are pre-dried at 65°C for 1.5 hours; the pre-dried gloves are then immersed in modified latex slurry and vulcanized at 85°C for 5.5 hours, followed by washing at 45°C for 15 minutes.
[0055] Secondary impregnation and curing: Prepare an impregnation solution for the nano-silica coating (solid content 11%, silane coupling agent added at 1.3% of the impregnation solution mass), and apply the nano-silica coating to easily worn areas such as the fingertips of the gloves through a secondary impregnation process, so that the coating thickness reaches 1.2 mm; then perform heat curing treatment on the coating at a temperature of 110℃ for 1.5 hours.
[0056] Example 3
[0057] Preparation of double-layer knitted gloves: the outer layer is made of aramid 1313 fiber with 18 stitches; the inner layer is made of cotton fiber and acrylic fiber (2:1) blend with 20 stitches; a conductive fiber mesh layer (linear density 20 dtex, mesh spacing 6 mm) is set between the outer and inner layers.
[0058] Preparation of modified carbon nanotubes: 25g of carbon nanotubes, 4g of 1,3-bis(aminopropane)tetramethyldisiloxane, and 90g of 20% formaldehyde solution were mixed and reacted at 70℃ for 4 hours. Then, the mixture was treated by ultrasonic-assisted ball milling at an ultrasonic frequency of 40kHz, a ball milling speed of 500r / min, and a ball milling time of 5 hours. Finally, the mixture was filtered, washed, and dried to obtain modified carbon nanotubes.
[0059] Preparation of modified latex slurry: Take 100g of nitrile latex with a solid content of 55%, add 4g of magnesium oxide, 2g of sulfur and 0.8g of tetramethylthiuram disulfide, mix evenly to obtain modified latex slurry.
[0060] Pre-drying and impregnation: The double-layer knitted gloves are pre-dried at 70°C for 2 hours; the pre-dried gloves are then immersed in modified latex slurry and vulcanized at 90°C for 6 hours, followed by washing at 50°C for 20 minutes.
[0061] Secondary impregnation and curing: Prepare an impregnation solution for the nano-silica coating (solid content 12%, silane coupling agent added at 1.6% of the impregnation solution mass), and apply the nano-silica coating to easily worn areas such as the fingertips of the gloves through a secondary impregnation process, so that the coating thickness reaches 1.2 mm; then perform heat curing treatment on the coating at a temperature of 116℃ for 2 hours.
[0062] Example 4
[0063] Preparation of double-layer knitted gloves: the outer layer is made of aramid 1313 fiber with 16 needles; the inner layer is made of cotton fiber and acrylic fiber (2:1) blend with 18 needles; a conductive fiber mesh layer (linear density 17dtex, mesh spacing 7mm) is set between the outer and inner layers.
[0064] Preparation of modified carbon nanotubes: 23g of carbon nanotubes, 3.5g of 1,3-bis(aminopropane)tetramethyldisiloxane, and 85g of 20% formaldehyde solution were mixed and reacted at 65℃ for 3.5 hours. Then, the mixture was treated by ultrasonic-assisted ball milling at an ultrasonic frequency of 38kHz, a ball milling speed of 400r / min, and a ball milling time of 4 hours. Finally, the mixture was filtered, washed, and dried to obtain modified carbon nanotubes.
[0065] Preparation of modified latex slurry: Take 100g of nitrile latex with a solid content of 53%, add 3.5g of magnesium oxide, 1.5g of sulfur, and 0.6g of tetramethylthiuram disulfide, mix evenly to obtain modified latex slurry.
[0066] Pre-drying and impregnation: The double-layer knitted gloves are pre-dried at 65°C for 1.5 hours; the pre-dried gloves are then immersed in modified latex slurry and vulcanized at 85°C for 5.5 hours, followed by washing at 45°C for 15 minutes.
[0067] Secondary impregnation and curing: Prepare an impregnation solution for the nano-silica coating (solid content 11%, silane coupling agent added at 1.3% of the impregnation solution mass), and apply the nano-silica coating to easily worn areas such as the fingertips of the gloves through a secondary impregnation process, so that the coating thickness reaches 1.2 mm; then perform heat curing treatment on the coating at a temperature of 110℃ for 1.5 hours.
[0068] Example 5
[0069] Preparation of double-layer knitted gloves: the outer layer is made of aramid 1313 fiber with 18 stitches; the inner layer is made of cotton fiber and acrylic fiber (2:1) blend with 20 stitches; a conductive fiber mesh layer (linear density 20 dtex, mesh spacing 6 mm) is set between the outer and inner layers.
[0070] Preparation of modified carbon nanotubes: 25g of carbon nanotubes, 4g of 1,3-bis(aminopropane)tetramethyldisiloxane, and 90g of 20% formaldehyde solution were mixed and reacted at 70℃ for 4 hours. Then, the mixture was treated by ultrasonic-assisted ball milling at an ultrasonic frequency of 40kHz, a ball milling speed of 500r / min, and a ball milling time of 5 hours. Finally, the mixture was filtered, washed, and dried to obtain modified carbon nanotubes.
[0071] Preparation of modified latex slurry: Take 100g of nitrile latex with a solid content of 55%, add 4g of magnesium oxide, 2g of sulfur and 0.8g of tetramethylthiuram disulfide, mix evenly to obtain modified latex slurry.
[0072] Pre-drying and impregnation: The double-layer knitted gloves are pre-dried at 70°C for 2 hours; the pre-dried gloves are then immersed in modified latex slurry and vulcanized at 90°C for 6 hours, followed by washing at 50°C for 20 minutes.
[0073] Secondary impregnation and curing: Prepare an impregnation solution for the nano-silica coating (solid content 12%, silane coupling agent added at 1.6% of the impregnation solution mass), and apply the nano-silica coating to easily worn areas such as the fingertips of the gloves through a secondary impregnation process, so that the coating thickness reaches 1.1 mm; then perform heat curing treatment on the coating at a temperature of 116℃ for 2 hours.
[0074] Comparative Example 1
[0075] The difference from Example 1 is that unmodified carbon nanotubes were used.
[0076] Comparative Example 2
[0077] The difference from Example 1 is that no conductive fiber mesh layer is provided.
[0078] Comparative Example 3
[0079] The difference from Example 1 is that it does not undergo secondary impregnation and curing treatment.
[0080] test:
[0081] Arc resistance performance test
[0082] Method: In accordance with ASTM F1506 standard, an arc current of 10 kA was applied to the surface of the glove for 0.1 s, and the carbonization of the coating was observed.
[0083] Insulation performance test
[0084] Method: According to GB / T17622-2008, a 50Hz, 10kV AC voltage was applied to the inner and outer layers of the glove for 1 minute, and the leakage current was measured.
[0085] Abrasion resistance test
[0086] Method: A Martindale abrasion tester was used. The glove sample was fixed on the worktable of the tester. A suitable friction cloth was selected and the number of friction cycles was set to 100,000. After the friction was completed, the mass loss of the sample was measured using an electronic balance and the mass loss rate was calculated to evaluate the abrasion resistance.
[0087] The following are the test results;
[0088] Table 1
[0089]
[0090] As can be seen from Table 1, the gloves prepared by this invention have excellent arc insulation properties, and at the same time, their wear resistance is significantly improved, which can increase their service life.
[0091] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A method for manufacturing an arc-resistant insulating glove, characterized in that, Includes the following steps: Prepare double-layer knitted gloves, wherein the double-layer composite structure includes an outer layer knitted from aramid 1313 fibers and an inner layer made of a 2:1 blend of cotton fibers and acrylic fibers; To prepare a modified nitrile rubber latex coating, 16-18 wt% modified carbon nanotubes were added to the nitrile rubber latex. A modified latex slurry is obtained by mixing nitrile latex with a solid content of 50%-55% with magnesium oxide, sulfur, and tetramethylthiuram disulfide in a ratio of 100:(3-4):(1-2):(0.5-0.8). Double-layer knitted gloves are immersed in modified latex slurry and vulcanized at 80-90℃ for 5-6 hours to form a dense coating; A nano-silica coating is added to easily worn areas such as the fingertips of gloves through a secondary impregnation process. In the secondary impregnation process, the solid content of the impregnation liquid for the nano-silica coating is 10%-12%, and the coating thickness reaches 1.2mm. After adding the nano-silica coating, the coating is subjected to heat curing treatment at a temperature of 100-116℃ for 1-2 hours.
2. The method for manufacturing arc-resistant insulating gloves according to claim 1, characterized in that: The outer layer has 14-18 needles, and the inner layer has 16-20 needles.
3. The method for manufacturing arc-resistant insulating gloves according to claim 1, characterized in that: Before impregnating the double-knitted gloves, pre-dry them at a temperature of 60-70℃ for 1-2 hours.
4. The method for manufacturing the arc-resistant insulating gloves according to claim 1, characterized in that: After vulcanization, the gloves with the coating are washed with water at a temperature of 40-50℃ for 10-20 minutes.
5. The method for manufacturing the arc-resistant insulating gloves according to claim 1, characterized in that: The method for preparing modified carbon nanotubes is as follows: Carbon nanotubes were mixed with 1,3-bis(aminopropane)tetramethyldisiloxane and formaldehyde solution in a ratio of 20-25g:3-4g:80-90g, and the mixture was reacted at 50-70℃ for 3-4 hours to modify the surface. Then, ultrasonic-assisted ball milling was used to treat the surface. Finally, the mixture was filtered, washed and dried to obtain the final product. The formaldehyde solution has a mass fraction of 20%.
6. The method for manufacturing arc-resistant insulating gloves according to claim 5, characterized in that: The ultrasonic frequency of the ultrasonic-assisted ball milling method is 35-40kHz, the ball milling speed is 300-500r / min, and the ball milling time is 3-5 hours.
7. The method for manufacturing arc-resistant insulating gloves according to claim 1, characterized in that: In the preparation of double-layer composite gloves, a conductive fiber mesh layer is set between the outer layer and the inner layer.
8. The method for manufacturing arc-resistant insulating gloves according to claim 7, characterized in that, The conductive fiber mesh layer has a linear density of 14-20 dtex and a mesh spacing of 6-10 mm.
9. The method for manufacturing the arc-resistant insulating gloves according to claim 1, characterized in that: In the secondary impregnation process, a coupling agent is added to the impregnation solution of the nano-silica coating. The coupling agent is a silane coupling agent, and the amount added is 1-1.6% of the mass of the impregnation solution.