A basalt fiber high-voltage arc barrier plate
By coating the surface of basalt fiber with nano-silicon carbide and unsaturated polyester resin layers, and combining them with an adhesive to make a barrier plate, the problem of arc breakdown of high-voltage electrical components during short circuits is solved, providing effective protection and improved mechanical properties, and it is suitable for the protection of electronic components.
Patent Information
- Application Number
- CN202410369564.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2044-03-28
AI Technical Summary
Existing high-voltage electrical components cannot effectively block high-voltage arcs during short circuits, leading to the puncture and combustion of the inner wall of the component housing, indicating a lack of effective protection measures.
Using basalt fiber as the base material, a barrier plate is made by coating its surface with a nano-silicon carbide layer and an unsaturated polyester resin layer, and combining it with an adhesive. By utilizing the high strength of basalt fiber and the high temperature resistance of silicon carbide, combined with the mechanical properties of unsaturated polyester resin, barrier plates of different thicknesses can be made to resist the arc impact of different voltages and currents.
It effectively blocks high-voltage arcs, protecting electrical components from breakdown and combustion, while also possessing good mechanical properties and voltage resistance, making it suitable for the protection of electronic components.
Abstract
Description
Technical Field
[0001] This invention relates to a basalt fiber high-voltage arc barrier plate. Background Technology
[0002] When a high-voltage electrical component is short-circuited, it will generate a powerful high-voltage arc, and the instantaneous temperature can reach up to 6000℃. Therefore, a protective plate is needed to block the high-voltage arc, so that the high-voltage arc cannot penetrate the inner wall of the electrical component box and is non-flammable, thereby protecting the electrical component. Summary of the Invention
[0003] This invention provides a basalt fiber high-voltage arc barrier and its preparation method. The barrier comprises modified basalt fiber and a binder. The method includes coating the surface of the basalt fiber with a nano-silicon carbide coating; then attaching an unsaturated polyester resin layer to the surface of the basalt fiber coated with nano-silicon carbide; finally, fabricating the basalt fiber into fabrics of different weights according to a certain warp and weft direction; and then combining the fabric with the binder to form a plate of different thicknesses. The barrier of this invention, with different thicknesses, can block arc impacts of different voltages and currents respectively, and has good mechanical properties, making it widely applicable as a protective component for electronic components.
[0004] A method for preparing a basalt fiber high-voltage arc barrier plate, characterized in that the preparation method includes:
[0005] 1) Basalt fibers are twisted into coarse sand and then placed in a tube furnace. Argon gas is introduced to purge the air in the tube furnace. The temperature is heated to 350-400 degrees Celsius. Acetylene gas is introduced and the pressure inside the tube furnace is controlled at 40-50 kPa. The temperature is held for 5-10 minutes. Then the temperature is heated to 800-850 degrees Celsius. A mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:10-20. The pressure inside the tube furnace is controlled at 120-150 kPa. The temperature is held for 15-30 minutes to obtain silicon carbide-coated basalt fibers.
[0006] 2) The basalt fibers obtained in step 1) are immersed in an unsaturated polyester solution, and then dried at 60-80 degrees Celsius to obtain silicon carbide-coated basalt fibers with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 45-50 parts by weight of unsaturated polyester resin emulsion, 5-8 parts by weight of dicyclopentadiene phenolic epoxy resin, 5-8 parts by weight of didecyl dimethyl ammonium chloride, 3-5 parts by weight of benzoyl peroxide, and 1-2 parts by weight of cobalt naphthenate; in this invention, the unsaturated polyester is not particularly limited, and common unsaturated polyester resins can be used;
[0007] 3) The fibers obtained in step 2) are spun into a fiber cloth with a weight of 200-800 g / m2;
[0008] 4) Prepare the adhesive by mixing 20-30 parts by weight of polytetrafluoroethylene suspension, 2-4 parts by weight of polyimide, 1-2 parts by weight of antistatic agent, 1-3 parts by weight of flame retardant, 1-1.5 parts by weight of curing agent, 3-5 parts by weight of tungsten disulfide, and 2-5 parts by weight of unsaturated polyester resin in a certain proportion.
[0009] 5) Combine one or more sheets of fiber cloth obtained in step 3) with the adhesive in step 4) as needed to obtain basalt fiber high-voltage arc barrier plates of different thicknesses.
[0010] Furthermore, in step 1), basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000-4000 tex.
[0011] Furthermore, in step 2), the solution of the unsaturated polyester comprises: 48 parts by mass of unsaturated polyester resin emulsion, 6 parts by mass of dicyclopentadiene phenolic epoxy resin, 6 parts by mass of bis(decyl)dimethylammonium chloride, 4 parts by mass of benzoyl peroxide, and 1.5 parts by mass of cobalt naphthenate.
[0012] Furthermore, in step 3), the basis weight of the fiber cloth is 200-800 g•m-2.
[0013] Furthermore, in step 4), the adhesive comprises 25 parts by weight of polytetrafluoroethylene suspension, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent, 2 parts by weight of flame retardant, 1 part by weight of curing agent, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0014] Furthermore, in this invention, the curing agent, flame retardant, and antistatic agent are not particularly limited. Preferably, the curing agent is an isocyanate, the flame retardant is a phosphorus-based flame retardant, and the antistatic agent is 1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide.
[0015] Furthermore, in step 5), the fiber cloth is bonded to the adhesive using vacuum infusion, molding, or RTM processes to produce boards of different thicknesses.
[0016] A basalt fiber high-voltage arc barrier plate, obtained by the aforementioned preparation method.
[0017] Beneficial technical effects of the present invention
[0018] 1) Basalt fiber possesses excellent tensile strength and is inexpensive. Combining basalt fiber with silicon carbide leverages the high strength, high modulus, and high toughness of basalt fiber to create a good interfacial bond with the silicon carbide matrix. This results in low interfacial stress and better compatibility with unsaturated polyester resin, producing high-strength, high-temperature resistant, and high-voltage resistant high-performance fiber-reinforced silicon carbide composite materials. Furthermore, the resulting material exhibits many unique and superior properties, including heat insulation, moisture resistance, water resistance, fire resistance, corrosion resistance, and long-term durability without degradation or deterioration.
[0019] 2) The unsaturated polyester resin layer can increase the mechanical modulus of basalt fiber cloth and improve the mechanical properties of the barrier plate.
[0020] 3) The addition of flame retardants and antistatic agents to the adhesive improves the fire resistance and voltage resistance of the barrier plate. Example
[0021] The invention will be described in more detail by way of examples and comparative examples, but the invention is not limited to these examples without departing from its spirit.
[0022] Example 1
[0023] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, the fibers are placed in a tube furnace, and argon gas is introduced to purge the air from the tube furnace. The furnace is heated to 350 degrees Celsius, and acetylene gas is introduced. The pressure inside the tube furnace is controlled at 40 kPa, and the temperature is maintained for 5 minutes. Then, the furnace is heated to 800 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:10. The pressure inside the tube furnace is controlled at 150 kPa, and the temperature is maintained for 15 minutes to obtain silicon carbide-coated basalt fibers.
[0024] 2) The basalt fibers obtained in step 1) are immersed in an unsaturated polyester solution, taken out and dried at 60 degrees Celsius to obtain silicon carbide-coated basalt fibers with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 45 parts by mass of unsaturated polyester resin emulsion, 5 parts by mass of dicyclopentadiene phenolic epoxy resin, 5 parts by mass of didecyl dimethyl ammonium chloride, 3 parts by mass of benzoyl peroxide and 1 part by mass of cobalt naphthenate.
[0025] 3) Spin the fibers obtained in step 2) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0026] 4) Prepare the adhesive by mixing 20 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 2 parts by weight of polyimide, 1 part by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 1 part by weight of phosphorus flame retardant, 1 part by weight of curing agent isocyanate, 3 parts by weight of tungsten disulfide, and 2 parts by weight of unsaturated polyester resin.
[0027] 5) Combine the three fiber cloths obtained in step 3) and the adhesive in step 4) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4 mm.
[0028] Example 2
[0029] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, the fibers are placed in a tube furnace, and argon gas is introduced to purge the air from the tube furnace. The furnace is heated to 370 degrees Celsius, and acetylene gas is introduced. The pressure inside the tube furnace is controlled at 45 kPa, and the temperature is maintained for 6 minutes. Then, the furnace is heated to 820 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:14. The pressure inside the tube furnace is controlled at 130 kPa, and the temperature is maintained for 1200 minutes to obtain silicon carbide-coated basalt fibers.
[0030] 2) The basalt fibers obtained in step 1) are immersed in an unsaturated polyester solution, taken out and dried at 65 degrees Celsius to obtain silicon carbide-coated basalt fibers with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 48 parts by mass of unsaturated polyester resin emulsion, 6 parts by mass of dicyclopentadiene phenolic epoxy resin, 6 parts by mass of didecyl dimethyl ammonium chloride, 4 parts by mass of benzoyl peroxide and 1.5 parts by mass of cobalt naphthenate;
[0031] 3) Spin the fibers obtained in step 2) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0032] 4) Prepare the adhesive by mixing 25 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 2 parts by weight of phosphorus flame retardant, 1 part by weight of curing agent isocyanate, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0033] 5) Combine the three fiber cloths obtained in step 3) and the adhesive in step 4) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4 mm.
[0034] Example 3
[0035] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, they are placed in a tube furnace, and argon gas is introduced to purge the air in the tube furnace. The furnace is heated to 380 degrees Celsius, and acetylene gas is introduced. The pressure inside the tube furnace is controlled at 48 kPa, and the temperature is maintained for 7 minutes. Then, the furnace is heated to 840 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:16. The pressure inside the tube furnace is controlled at 140 kPa, and the temperature is maintained for 25 minutes to obtain silicon carbide-coated basalt fibers.
[0036] 2) The basalt fibers obtained in step 1) are immersed in an unsaturated polyester solution, taken out and dried at 70 degrees Celsius to obtain silicon carbide-coated basalt fibers with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 48 parts by mass of unsaturated polyester resin emulsion, 7 parts by mass of dicyclopentadiene phenolic epoxy resin, 7 parts by mass of didecyl dimethyl ammonium chloride, 4 parts by mass of benzoyl peroxide and 1.5 parts by mass of cobalt naphthenate;
[0037] 3) Spin the fibers obtained in step 2) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0038] 4) Prepare the adhesive by mixing 26 parts by weight of a 60% solids content polytetrafluoroethylene suspension, 3 parts by weight of polyimide, 1.5 parts by weight of an antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 2 parts by weight of a phosphorus-based flame retardant, 1.5 parts by weight of a curing agent isocyanate, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0039] 5) Combine the three fiber cloths obtained in step 3) and the adhesive in step 4) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4 mm.
[0040] Example 4
[0041] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, they are placed in a tube furnace, and argon gas is introduced to purge the air in the tube furnace. The furnace is heated to 400 degrees Celsius, and acetylene gas is introduced. The gas pressure inside the tube furnace is controlled at 50 kPa, and the temperature is maintained for 10 min. Then, the furnace is heated to 850 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:20. The pressure inside the tube furnace is controlled at 150 kPa, and the temperature is maintained for 30 min to obtain silicon carbide-coated basalt fibers.
[0042] 2) The basalt fibers obtained in step 1) are immersed in an unsaturated polyester solution, taken out and dried at 80 degrees Celsius to obtain silicon carbide-coated basalt fibers with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 50 parts by mass of unsaturated polyester resin emulsion, 8 parts by mass of dicyclopentadiene phenolic epoxy resin, 8 parts by mass of didecyl dimethyl ammonium chloride, 5 parts by mass of benzoyl peroxide and 2 parts by mass of cobalt naphthenate.
[0043] 3) Spin the fibers obtained in step 2) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0044] 4) Prepare the adhesive by mixing 30 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 3 parts by weight of phosphorus flame retardant, 1.5 parts by weight of curing agent isocyanate, 5 parts by weight of tungsten disulfide, and 5 parts by weight of unsaturated polyester resin.
[0045] 5) Combine the three fiber cloths obtained in step 3) and the adhesive in step 4) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4 mm.
[0046] Comparative Example 1 (without silicon carbide layer)
[0047] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex, and then impregnated in a solution of unsaturated polyester. After being removed and dried at 65 degrees Celsius, basalt fibers coated with an unsaturated polyester layer are obtained. The unsaturated polyester solution includes 48 parts by weight of unsaturated polyester resin emulsion, 6 parts by weight of dicyclopentadiene phenolic epoxy resin, 6 parts by weight of didecyl dimethyl ammonium chloride, 4 parts by weight of benzoyl peroxide, and 1.5 parts by weight of cobalt naphthenate.
[0048] 2) Spin the fibers obtained in step 1) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0049] 3) Prepare the adhesive by mixing 25 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 2 parts by weight of phosphorus flame retardant, 1 part by weight of curing agent isocyanate, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0050] 4) Combine the three fiber cloths obtained in step 2) and the adhesive in step 3) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4mm.
[0051] Comparative Example 2 (without acetylene pretreatment)
[0052] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, they are placed in a tube furnace, and argon gas is introduced to purge the air in the tube furnace. The furnace is heated to 820 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:14. The pressure inside the tube furnace is controlled at 130 kPa, and the temperature is maintained for 1200 min to obtain silicon carbide-coated basalt fibers.
[0053] 2) The basalt fibers obtained in step 1) are immersed in an unsaturated polyester solution, taken out and dried at 65 degrees Celsius to obtain silicon carbide-coated basalt fibers with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 48 parts by mass of unsaturated polyester resin emulsion, 6 parts by mass of dicyclopentadiene phenolic epoxy resin, 6 parts by mass of didecyl dimethyl ammonium chloride, 4 parts by mass of benzoyl peroxide and 1.5 parts by mass of cobalt naphthenate;
[0054] 3) Spin the fibers obtained in step 2) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0055] 4) Prepare the adhesive by mixing 25 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 2 parts by weight of phosphorus flame retardant, 1 part by weight of curing agent isocyanate, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0056] 5) Combine the three fiber cloths obtained in step 3) and the adhesive in step 4) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4 mm.
[0057] Comparative Example 3 (without polyester coating)
[0058] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, the fibers are placed in a tube furnace, and argon gas is introduced to purge the air from the tube furnace. The furnace is heated to 370 degrees Celsius, and acetylene gas is introduced. The pressure inside the tube furnace is controlled at 45 kPa, and the temperature is maintained for 6 minutes. Then, the furnace is heated to 820 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:14. The pressure inside the tube furnace is controlled at 130 kPa, and the temperature is maintained for 1200 minutes to obtain silicon carbide-coated basalt fibers.
[0059] 2) Spin the fibers obtained in step 1) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0060] 3) Prepare the adhesive by mixing 25 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 2 parts by weight of phosphorus flame retardant, 1 part by weight of curing agent isocyanate, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0061] 4) Combine the three fiber cloths obtained in step 2) and the adhesive in step 3) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4mm.
[0062] Comparative Example 4 (No Additives)
[0063] 1) Basalt fibers are twisted into coarse sand using a stranding machine, with a linear density of 2000 tex. Then, the fibers are placed in a tube furnace, and argon gas is introduced to purge the air from the tube furnace. The furnace is heated to 370 degrees Celsius, and acetylene gas is introduced. The pressure inside the tube furnace is controlled at 45 kPa, and the temperature is maintained for 6 minutes. Then, the furnace is heated to 820 degrees Celsius, and a mixture of acetylene and trichloromethylsilane is introduced, with a volume ratio of acetylene to trichloromethylsilane of 1:14. The pressure inside the tube furnace is controlled at 130 kPa, and the temperature is maintained for 1200 minutes to obtain silicon carbide-coated basalt fibers.
[0064] 2) The basalt fiber obtained in step 1) is immersed in an unsaturated polyester solution, taken out and dried at 65 degrees Celsius to obtain silicon carbide-coated basalt fiber with an unsaturated polyester layer on the surface; the unsaturated polyester solution includes 48 parts by mass of unsaturated polyester resin emulsion, 4 parts by mass of benzoyl peroxide and 1.5 parts by mass of cobalt naphthenate.
[0065] 3) Spin the fibers obtained in step 2) into a yarn with a weight of 200 g / m². 2 Fiber cloth;
[0066] 4) Prepare the adhesive by mixing 25 parts by weight of polytetrafluoroethylene suspension with a solid content of 60%, 4 parts by weight of polyimide, 2 parts by weight of antistatic agent (1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl)imide), 2 parts by weight of phosphorus flame retardant, 1 part by weight of curing agent isocyanate, 4 parts by weight of tungsten disulfide, and 4 parts by weight of unsaturated polyester resin.
[0067] 5) Combine the three fiber cloths obtained in step 3) and the adhesive in step 4) using the RTM process to obtain a basalt fiber high-voltage arc barrier plate with a thickness of 4 mm.
[0068] Experimental results
[0069] A 4mm thick sample plate was used, and its thermal conductivity was measured using an interface material thermal resistance and thermal conductivity measuring device according to the ASTM D5470 steady-state heat flow method. The dielectric strength was tested using an electrical dielectric strength tester according to GB / T 1408-2006 standard. The results for bending strength, thermal conductivity, dielectric strength, minimum breakdown voltage, and maximum current intensity that can block an electric arc are shown in Table 1.
[0070] Table 1
[0071] Bending strength (MPa) Thermal conductivity (W / m·K) Dielectric strength (MVm) Minimum breakdown voltage (V) Maximum current intensity (Ka) Example 1 205 2.55 16.2 6000 20 Example 2 201 2.58 16.4 6000 20 Example 3 211 2.62 16.5 6000 20 Example 4 204 2.52 16.3 6000 20 Comparative Example 1 175 2.26 14.2 5000 16 Comparative Example 2 188 2.41 15.9 6000 20 Comparative Example 3 162 2.52 15.1 5500 18 Comparative Example 4 180 2.55 15.9 6000 20
[0072] As can be seen from the data in the examples and comparative examples, the silicon carbide coating layer of the present invention improves the mechanical properties of the barrier plate. Its addition enhances the bonding ability with unsaturated polyester resin and also improves the voltage resistance of the barrier plate. Furthermore, the acetylene surface pretreatment of basalt fibers before the silicon carbide coating process improves the coating performance of silicon carbide and enhances the mechanical properties of the barrier plate. The unsaturated polyester resin coating significantly improves the bending resistance and mechanical properties of the barrier plate, with the addition of dicyclopentadiene phenolic epoxy resin and didecyl dimethyl ammonium chloride being particularly effective in improving mechanical properties. Plates of different thicknesses can respectively block arc impacts of different voltages and currents. Taking the 4mm plate of the present invention as an example, it can block an arc with a voltage of 6000 volts and a current of 20kA.
[0073] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention.
Claims
1. A method of making a basalt fiber high voltage arc barrier panel, characterized by, The preparation method comprises: 1) twisting basalt fibers into coarse sand, and then placing them in a tube furnace, introducing argon to exhaust air in the tube furnace, heating to 350-400 degrees Celsius, introducing acetylene gas, controlling the pressure in the tube furnace to be 40-50 kPa, keeping for 5-10 minutes, then heating to 800-850 degrees Celsius, introducing a mixed gas of acetylene and trichloromethylsilane, wherein the volume ratio of acetylene to trichloromethylsilane is 1:10-20, controlling the pressure in the tube furnace to be 120-150 kPa, keeping for 15-30 minutes, to obtain basalt fibers coated with silicon carbide; 2) immersing the basalt fibers obtained in step 1) in a solution of unsaturated polyester, taking out and drying at 60-80 degrees Celsius, to obtain basalt fibers coated with silicon carbide and an unsaturated polyester layer on the surface; the solution of unsaturated polyester comprises 45-50 parts by mass of an unsaturated polyester resin emulsion, 5-8 parts by mass of a dicyclopentadiene phenolic epoxy resin, 5-8 parts by mass of a ditetradecyl dimethyl ammonium chloride, 3-5 parts by mass of dibenzoyl peroxide, and 1-2 parts by mass of cobalt naphthenate; 3) the fibers obtained in step 2) are woven into a fiber cloth having a weight of 200-800 g / m 2 2). 4) configuring an adhesive, and proportioning 20-30 parts by mass of a polytetrafluoroethylene suspension, 2-4 parts by mass of a polyimide, 1-2 parts by mass of an antistatic agent, 1-3 parts by mass of a flame retardant, 1-1.5 parts by mass of a curing agent, 3-5 parts by mass of tungsten disulfide, and 2-5 parts by mass of an unsaturated polyester resin to obtain an adhesive; 5) combining one or more fiber cloths obtained in step 3) and the adhesive of step 4) as needed to obtain basalt fiber high-voltage arc barrier plates of different thicknesses.
2. The production method according to claim 1, wherein In step 1), the basalt fibers are twisted into coarse sand using a stranding machine, and the linear density is 2000-4000 tex.
3. The production method according to claim 1, wherein In step 2), the solution of unsaturated polyester comprises 48 parts by mass of an unsaturated polyester resin emulsion, 6 parts by mass of a dicyclopentadiene phenolic epoxy resin, 6 parts by mass of a ditetradecyl dimethyl ammonium chloride, 4 parts by mass of dibenzoyl peroxide, and 1.5 parts by mass of cobalt naphthenate.
4. The production method according to claim 1, wherein In step 4), the adhesive comprises 25 parts by mass of a polytetrafluoroethylene suspension, 4 parts by mass of a polyimide, 2 parts by mass of an antistatic agent, 2 parts by mass of a flame retardant, 1 part by mass of a curing agent, 4 parts by mass of tungsten disulfide, and 4 parts by mass of an unsaturated polyester resin.
5. The production method according to claim 4, wherein The curing agent is isocyanate, the flame retardant is a phosphorus-based flame retardant, and the antistatic agent is 1-ethyl-3-methylimidazoline bis(trifluoromethylsulfonyl) imide.
6. The production method according to claim 1, wherein In step 5), the fiber cloth and the adhesive are combined using a vacuum introduction, molding, or RTM process to make plates of different thicknesses.
7. A basalt fiber high voltage arc barrier panel characterized by, The basalt fiber high-voltage arc barrier plate is obtained by the preparation method of any one of claims 1-6.
Citation Information
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