Preparation method of carbon fiber reinforced thermosetting resin composite material brake pad

Abstract

The invention relates to a preparation method of a carbon fiber reinforced thermosetting resin composite material brake pad. The preparation method comprises the following steps: adding polyacrylonitrile-based carbon fibers, a ceramic matrix and phenolic resin into a high-speed mixer, and stirring and mixing to obtain a mixed material; putting the mixed material into a mold, and carrying out compression molding to prepare a brake pad blank; putting the brake pad blank into a curing oven, and heating and curing; putting the cured brake pad blank into a high-temperature sintering furnace, and carrying out high-temperature sintering in an argon protective atmosphere; carrying out surface grinding and polishing treatment on the brake pad subjected to high-temperature sintering; the MOF accelerant is prepared from a zeolite imidazate framework material ZIF-8, dichloromethane, 4-vinyl benzocyclobutene, triethylamine, biphenyl-4, 4 '-dithiol and a lanthanum nitrate aqueous solution; the prepared carbon fiber reinforced ceramic-based brake pad is small in friction coefficient fluctuation, good in wear resistance, excellent in heat stability and good in comprehensive performance.

Description

A method for preparing carbon fiber reinforced thermosetting resin composite brake pads Technical Field

[0001] This invention relates to the field of carbon fiber reinforced thermosetting resin matrix composite technology, and in particular to a method for preparing carbon fiber reinforced ceramic matrix phenolic resin brake pads. Background Technology

[0002] As a key component of a vehicle's braking system, brake pads' performance directly affects driving safety. With the development of the automotive industry and the widespread use of high-speed trains and other modes of transportation, the performance requirements for brake pads are becoming increasingly stringent, demanding characteristics such as a high coefficient of friction, good wear resistance, excellent thermal stability, and a short braking distance.

[0003] Traditional brake pad materials, such as semi-metallic and organic brake pads, are prone to problems such as decreased friction coefficient and accelerated wear at high temperatures, making it difficult to meet the demands of high-performance braking. While ceramic-based brake pads have better high-temperature performance, pure ceramic materials have poor toughness and are prone to cracking during braking.

[0004] Carbon fiber reinforced ceramic matrix composites combine the high strength and toughness of carbon fibers with the high hardness, high temperature resistance, and wear resistance of ceramic materials, making them ideal materials for preparing high-performance brake pads. However, existing methods for preparing carbon fiber reinforced ceramic matrix brake pads suffer from problems such as complex processes, high costs, and unstable brake pad performance, limiting their large-scale application. Therefore, developing a simple, low-cost method for preparing high-performance carbon fiber reinforced ceramic matrix brake pads is of significant practical importance. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a method for preparing carbon fiber reinforced thermosetting resin composite brake pads. The method comprises the following steps: S1 Raw material mixing: 10-20 parts of polyacrylonitrile-based carbon fiber, 60-80 parts of ceramic matrix, 10-20 parts of phenolic resin, and 0.1-0.5 parts of MOF accelerator are added to a high-speed mixer and mixed for 15-30 minutes at a speed of 800-1200 r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is cured... The brake pad blank is placed in a curing furnace for curing treatment, and then cooled to room temperature with the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank. S4 High-Temperature Sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, then cooled to room temperature with the furnace. During high-temperature sintering, the ceramic matrix raw materials undergo solid-phase reactions and the glass phase melts, densifying the ceramic matrix and enhancing the interfacial bonding between the carbon fibers and the ceramic matrix. S5 Surface Treatment: The heat-treated brake pads undergo surface grinding and polishing to improve the contact area and friction performance between the brake pads and the brake disc.

[0006] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 40-60:20-30:10-20:5-15.

[0007] The compression molding process involves a pressure of 10-30 MPa, a temperature of 150-200°C, and a time of 10-20 minutes.

[0008] The curing process involves a heating rate of 2-5℃ / min, heating to 200-240℃, and holding at that temperature for 2-4 hours.

[0009] The heating rate of the high-temperature sintering is 3-8℃ / min, the temperature is raised to 1500-1700℃, and the temperature is held for 3-5 hours.

[0010] The preparation method of the MOF accelerator is as follows: 80-100 parts of zeolite imidazole ester framework material ZIF-8 are dispersed in 500-1000 parts of dichloromethane, 80-120 parts of 4-vinylbenzocyclobutene and 5-10 parts of triethylamine are added, and the mixture is stirred at 50-60℃ for 16-24 hours to form ZIF-8@VBCB precursor; the system is heated to 160-180℃ and reacted for 3-4 hours, then 15-25 parts of biphenyl-4,4''-dithiol are added, and the mixture is reacted at 80-90℃ for 1-4 hours; 80-100 parts of the reaction product are dispersed in 1000-1500 parts of 10-18% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 9-12 hours, filtered, and dried to obtain the MOF accelerator.

[0011] The core of the preparation of the multifunctional MOF accelerator for brake pads lies in the multi-step modification of ZIF-8. First, 4-vinylbenzocyclobutene is grafted onto the ZIF-8 surface via nucleophilic addition or free radical polymerization under triethylamine catalysis, forming the ZIF-8@VBCB precursor. Second, benzocyclobutene undergoes ring-opening crosslinking, followed by the addition of biphenyl-4,4''-dithiol, whose thiol groups react with the crosslinked polymer layer. Finally, La³⁺ in lanthanum nitrate solution coordinates with ZIF-8 and the polymer layer, completing the modification. The entire process, through the breaking and recombination of chemical bonds, endows ZIF-8 with new functional groups and structural properties.

[0012] Technical Effects: This invention discloses a method for preparing carbon fiber reinforced thermosetting resin composite brake pads. Compared with existing technologies, this invention has the following significant effects: 1. In terms of performance improvement, the modified MOF accelerator, due to its cross-linking structure and metal coordination, enhances the frictional stability of the brake pads and reduces thermal fading at high temperatures; the synergistic effect of ZIF-8 nanoparticles and the organic polymer layer reduces wear rate and extends service life. Simultaneously, organic modification improves the compatibility between MOF and the matrix, enhancing the mechanical properties of the composite material and maintaining good performance even in complex environments such as humid and oily conditions.

[0013] 2. The carbon fiber reinforced ceramic-based brake pads prepared by this invention have small fluctuations in the coefficient of friction, good wear resistance, excellent thermal stability, and good overall performance. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description is provided in conjunction with embodiments and comparative examples: Friction coefficient, wear rate, and thermal expansion rate testing: The XD-MSM constant-speed friction testing machine was used, and the measurements were performed according to GB / T5763-2008. Example 1

[0015] A method for preparing carbon fiber reinforced thermosetting resin composite brake pads includes the following steps: S1 Raw material mixing: 10g of polyacrylonitrile-based carbon fiber, 60g of ceramic matrix, 10g of phenolic resin, and 0.1g of MOF accelerator are added to a high-speed mixer and mixed for 15 minutes at a speed of 800 r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment. Then, the brake pad blank is cooled to room temperature in the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, and then cooled to room temperature in the furnace; During the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and melting of the glass phase, which densifies the ceramic matrix and enhances the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment: The heat-treated brake pads are surface ground and polished to improve the contact area and friction performance between the brake pads and the brake disc.

[0016] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 40:20:10:5.

[0017] The compression molding process involves a pressure of 10 MPa, a temperature of 150°C, and a time of 10 minutes.

[0018] The curing process is carried out at a heating rate of 2℃ / min, heated to 200℃, and held for 2 hours.

[0019] The high-temperature sintering process involves a heating rate of 3°C / min, heating to 1500°C, and holding at that temperature for 3 hours.

[0020] The preparation method of the MOF accelerator is as follows: 80g of zeolite imidazole ester framework material ZIF-8 is dispersed in 500g of dichloromethane, 80g of 4-vinylbenzocyclobutene and 5g of triethylamine are added, and the mixture is stirred at 50℃ for 16 hours to form the ZIF-8@VBCB precursor; the system is heated to 160℃ and reacted for 3 hours, then 15g of biphenyl-4,4''-dithiol is added, and the mixture is reacted at 80℃ for 1 hour; 80g of the reaction product is dispersed in 1000g of 10% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 9 hours, filtered, and dried to obtain the MOF accelerator. Example 2

[0021] A method for preparing carbon fiber reinforced thermosetting resin composite brake pads includes the following steps: S1 Raw material mixing: 13g of polyacrylonitrile-based carbon fiber, 65g of ceramic matrix, 13g of phenolic resin, and 0.2g of MOF accelerator are added to a high-speed mixer and mixed for 20 minutes at a speed of 900 r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment. Then, the brake pad blank is cooled to room temperature in the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, and then cooled to room temperature in the furnace; During the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and melting of the glass phase, which densifies the ceramic matrix and enhances the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment: The heat-treated brake pads are surface ground and polished to improve the contact area and friction performance between the brake pads and the brake disc.

[0022] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 45:24:13:8.

[0023] The compression molding process involves a pressure of 15 MPa, a temperature of 160°C, and a time of 15 minutes.

[0024] The curing process is carried out at a heating rate of 3℃ / min, heated to 210℃, and held for 3 hours.

[0025] The high-temperature sintering process involves a heating rate of 5°C / min, heating to 1550°C, and holding at that temperature for 4 hours.

[0026] The preparation method of the MOF accelerator is as follows: 85g of zeolite imidazole ester framework material ZIF-8 is dispersed in 600g of dichloromethane, 90g of 4-vinylbenzocyclobutene and 6g of triethylamine are added, and the mixture is stirred at 55°C for 18 hours to form the ZIF-8@VBCB precursor; the system is heated to 165°C and reacted for 3.5 hours, then 18g of biphenyl-4,4''-dithiol is added, and the mixture is reacted at 85°C for 2 hours; 85g of the reaction product is dispersed in 1100g of 12% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 10 hours, filtered, and dried to obtain the MOF accelerator. Example 3

[0027] A method for preparing carbon fiber reinforced thermosetting resin composite brake pads includes the following steps: S1 Raw material mixing: 18g of polyacrylonitrile-based carbon fiber, 75g of ceramic matrix, 18g of phenolic resin, and 0.4g of MOF accelerator are added to a high-speed mixer and mixed for 25 minutes at a speed of 1100 r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment. Then, the brake pad blank is cooled to room temperature in the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, and then cooled to room temperature in the furnace; During the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and melting of the glass phase, which densifies the ceramic matrix and enhances the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment: The heat-treated brake pads are surface ground and polished to improve the contact area and friction performance between the brake pads and the brake disc.

[0028] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 55:28:17:13.

[0029] The compression molding process involves a pressure of 25 MPa, a temperature of 180°C, and a time of 15 minutes.

[0030] The curing process is carried out at a heating rate of 4℃ / min, heated to 230℃, and held for 3 hours.

[0031] The high-temperature sintering process involves a heating rate of 7°C / min, heating to 1650°C, and holding at that temperature for 4 hours.

[0032] The preparation method of the MOF accelerator is as follows: 95g of zeolite imidazole ester framework material ZIF-8 is dispersed in 900g of dichloromethane, 110g of 4-vinylbenzocyclobutene and 8g of triethylamine are added, and the mixture is stirred at 55°C for 22 hours to form the ZIF-8@VBCB precursor; the system is heated to 175°C and reacted for 3.5 hours, then 23g of biphenyl-4,4''-dithiol is added, and the mixture is reacted at 85°C for 3 hours; 95g of the reaction product is dispersed in 1400g of 16% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 11 hours, filtered, and dried to obtain the MOF accelerator. Example 4

[0033] A method for preparing carbon fiber reinforced thermosetting resin composite brake pads includes the following steps: S1 Raw material mixing: 20g of polyacrylonitrile-based carbon fiber, 80g of ceramic matrix, 20g of phenolic resin, and 0.5g of MOF accelerator are added to a high-speed mixer and mixed for 30 minutes at a speed of 1200r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment. Then, the brake pad blank is cooled to room temperature in the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, and then cooled to room temperature in the furnace; During the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and melting of the glass phase, which densifies the ceramic matrix and enhances the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment: The heat-treated brake pads are surface ground and polished to improve the contact area and friction performance between the brake pads and the brake disc.

[0034] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 60:30:20:15.

[0035] The compression molding process involves a pressure of 30 MPa, a temperature of 200°C, and a time of 20 minutes.

[0036] The curing process involves a heating rate of 5°C / min, heating to 240°C, and holding at that temperature for 4 hours.

[0037] The heating rate for the high-temperature sintering is 8℃ / min, the temperature is raised to 1700℃, and held for 5 hours.

[0038] The preparation method of the MOF accelerator is as follows: 100g of zeolite imidazole ester backbone material ZIF-8 is dispersed in 1000g of dichloromethane, 120g of 4-vinylbenzocyclobutene and 10g of triethylamine are added, and the mixture is stirred at 60℃ for 24 hours to form ZIF-8@VBCB precursor; the system is heated to 180℃ and reacted for 4 hours, then 25g of biphenyl-4,4''-dithiol is added and reacted at 90℃ for 4 hours; 100g of the reaction product is dispersed in 1500g of 18% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 12 hours, filtered, and dried to obtain the MOF accelerator.

[0039] Comparative Example 1: A method for preparing a carbon fiber reinforced thermosetting resin composite brake pad, comprising the following steps: S1 Raw material mixing: 10g of polyacrylonitrile-based carbon fiber, 60g of ceramic matrix, and 10g of phenolic resin are added to a high-speed mixer and mixed for 15 minutes at a speed of 800r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment, and then cured in the oven. Cooling to room temperature allows the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering places the cured brake pad blank into a high-temperature sintering furnace for high-temperature sintering under an argon protective atmosphere, and then cools it to room temperature with the furnace; during the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and glass phase melting, making the ceramic matrix denser and enhancing the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment involves surface grinding and polishing of the heat-treated brake pads to improve the contact area and friction performance between the brake pads and the brake disc.

[0040] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 40:20:10:5.

[0041] The compression molding process involves a pressure of 10 MPa, a temperature of 150°C, and a time of 10 minutes.

[0042] The curing process is carried out at a heating rate of 2℃ / min, heated to 200℃, and held for 2 hours.

[0043] The high-temperature sintering process involves a heating rate of 3°C / min, heating to 1500°C, and holding at that temperature for 3 hours.

[0044] Comparative Example 2: A method for preparing a carbon fiber reinforced thermosetting resin composite brake pad, comprising the following steps: S1 Raw material mixing: 10g of polyacrylonitrile-based carbon fiber, 60g of ceramic matrix, 10g of phenolic resin, and 0.1g of accelerator are added to a high-speed mixer and mixed for 15 minutes at a speed of 800r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment. Then, the brake pad blank is cooled to room temperature in the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, and then cooled to room temperature in the furnace; During the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and melting of the glass phase, which densifies the ceramic matrix and enhances the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment: The heat-treated brake pads are surface ground and polished to improve the contact area and friction performance between the brake pads and the brake disc.

[0045] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 40:20:10:5.

[0046] The compression molding process involves a pressure of 10 MPa, a temperature of 150°C, and a time of 10 minutes.

[0047] The curing process is carried out at a heating rate of 2℃ / min, heated to 200℃, and held for 2 hours.

[0048] The high-temperature sintering process involves a heating rate of 3°C / min, heating to 1500°C, and holding at that temperature for 3 hours.

[0049] The preparation method of the accelerator is as follows: 80g of zeolite imidazole ester skeleton material ZIF-8 is dispersed in 500g of dichloromethane, 5g of triethylamine is added, and the mixture is stirred at 50℃ for 16 hours. Then, the system is heated to 160℃ and reacted for 3 hours. Subsequently, 15g of biphenyl-4,4''-dithiol is added, and the mixture is reacted at 80℃ for 1 hour. 80g of the reaction product is dispersed in 1000g of 10% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 9 hours, filtered, and dried to obtain the accelerator.

[0050] Comparative Example 3: A method for preparing a carbon fiber reinforced thermosetting resin composite brake pad, comprising the following steps: S1 Raw material mixing: 10g of polyacrylonitrile-based carbon fiber, 60g of ceramic matrix, 10g of phenolic resin, and 0.1g of accelerator are added to a high-speed mixer and mixed for 15 minutes at a speed of 800r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed in a curing oven for curing treatment. Then, the brake pad blank is cooled to room temperature in the furnace to allow the binder to fully cure, improving the strength and stability of the brake pad blank; S4 High-temperature sintering: The cured brake pad blank is placed in a high-temperature sintering furnace and sintered at high temperature under an argon protective atmosphere, and then cooled to room temperature in the furnace; During the high-temperature sintering process, the ceramic matrix raw materials undergo solid-phase reaction and melting of the glass phase, which densifies the ceramic matrix and enhances the interfacial bonding between the carbon fiber and the ceramic matrix; S5 Surface treatment: The heat-treated brake pads are surface ground and polished to improve the contact area and friction performance between the brake pads and the brake disc.

[0051] The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 40:20:10:5.

[0052] The compression molding process involves a pressure of 10 MPa, a temperature of 150°C, and a time of 10 minutes.

[0053] The curing process is carried out at a heating rate of 2℃ / min, heated to 200℃, and held for 2 hours.

[0054] The high-temperature sintering process involves a heating rate of 3°C / min, heating to 1500°C, and holding at that temperature for 3 hours.

[0055] The preparation method of the accelerator is as follows: 80g of zeolite imidazole ester framework material ZIF-8 is dispersed in 500g of dichloromethane, 80g of 4-vinylbenzocyclobutene and 5g of triethylamine are added, and the mixture is stirred at 50℃ for 16 hours to form ZIF-8@VBCB precursor. The system is then heated to 160℃ and reacted for 3 hours. 80g of the reaction product is dispersed in 1000g of 10% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 9 hours, filtered, and dried to obtain the accelerator.

[0056] Friction coefficient and wear rate / 10 -7 cm 3 / N·m Thermal Expansion Rate / % Example 1 0.44 0.17 1.1 Example 2 0.45 0.15 1.0 Example 3 0.47 0.13 0.8 Example 4 0.48 0.12 0.7 Comparative Example 1 0.31 0.45 2.3 Comparative Example 2 0.38 0.28 1.6 Comparative Example 3 0.40 0.25 1.5 Based on the data analysis of the above embodiments and comparative examples, the carbon fiber reinforced ceramic matrix brake pads prepared by the present invention exhibit small fluctuations in the coefficient of friction, good wear resistance, excellent thermal stability, and good overall performance.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for preparing a carbon fiber reinforced thermosetting resin composite brake pad, comprising the following steps: S1 Raw material mixing: 10-20 parts of polyacrylonitrile-based carbon fiber, 60-80 parts of ceramic matrix, 10-20 parts of phenolic resin, and 0.1-0.5 parts of MOF accelerator are added to a high-speed mixer and mixed for 15-30 minutes at a speed of 800-1200 r / min to ensure thorough and uniform mixing of all components, resulting in a mixture; S2 Compression molding: The mixture is placed into a mold and compression molded to form a brake pad blank; S3 Curing treatment: The brake pad blank is placed into a curing treatment... In the curing furnace, the brake pads undergo curing treatment and are then cooled to room temperature to fully solidify the binder, improving the strength and stability of the brake pad blank. In S4, high-temperature sintering involves placing the cured brake pad blank into a high-temperature sintering furnace and sintering it under an argon protective atmosphere, followed by cooling to room temperature. During high-temperature sintering, the ceramic matrix raw materials undergo solid-phase reactions and glass phase melting, densifying the ceramic matrix and enhancing the interfacial bonding between the carbon fibers and the ceramic matrix. S5, surface treatment, involves grinding and polishing the surface of the heat-treated brake pads to improve the contact area and friction performance between the brake pads and the brake disc.

2. The method for preparing a carbon fiber reinforced thermosetting resin composite brake pad according to claim 1, characterized in that: The ceramic matrix is ​​composed of silicon carbide, alumina, titanium dioxide, and borosilicate glass powder in a mass ratio of 40-60:20-30:10-20:5-15.

3. The method for preparing a carbon fiber reinforced thermosetting resin composite brake pad according to claim 1, characterized in that: The compression molding process involves a pressure of 10-30 MPa, a temperature of 150-200°C, and a time of 10-20 minutes.

4. The method for preparing a carbon fiber reinforced thermosetting resin composite brake pad according to claim 1, characterized in that: The curing process involves a heating rate of 2-5℃ / min, heating to 200-240℃, and holding at that temperature for 2-4 hours.

5. The method for preparing a carbon fiber reinforced thermosetting resin composite brake pad according to claim 1, characterized in that: The heating rate of the high-temperature sintering is 3-8℃ / min, the temperature is raised to 1500-1700℃, and the temperature is held for 3-5 hours.

6. The method for preparing a carbon fiber reinforced thermosetting resin composite brake pad according to claim 1, characterized in that: The preparation method of the MOF accelerator is as follows: 80-100 parts of zeolite imidazole ester framework material ZIF-8 are dispersed in 500-1000 parts of dichloromethane, 80-120 parts of 4-vinylbenzocyclobutene and 5-10 parts of triethylamine are added, and the mixture is stirred at 50-60℃ for 16-24 hours to form ZIF-8@VBCB precursor; the system is heated to 160-180℃ and reacted for 3-4 hours, then 15-25 parts of biphenyl-4,4''-dithiol are added, and the mixture is reacted at 80-90℃ for 1-4 hours; 80-100 parts of the reaction product are dispersed in 1000-1500 parts of 10-18% (w / w) lanthanum nitrate aqueous solution, stirred at room temperature for 9-12 hours, filtered, and dried to obtain the MOF accelerator.