Preparation method of phenolic resin friction material for reinforcing fiber interface

Abstract

The invention relates to the field of wear-resistant materials, in particular to a preparation method of a phenolic resin friction material with a reinforced fiber interface, which comprises the following steps: 1, preparation of fibers with an organic silicon modified graphene oxide reinforced interface: pre-mixing graphene oxide and an organic silicon coupling agent for reaction, dispersing in a solvent under the condition of ultrasonic waves, and drying to obtain the fibers with the reinforced fiber interface; adding reinforced fibers into the graphene mixed solution; the phenolic resin, the reinforcing fibers and the filler are fully and evenly mixed and then poured into a preheated mold, heating compression is conducted under certain pressure and temperature, curing forming is conducted after a certain time, graphene oxide not only improves the interface bonding strength, but also improves the friction performance of the friction material; and the heat transfer efficiency of the whole composite material is also improved, so that the composite material has more stable performance under a high-temperature condition. The preparation method comprises the steps of mixing, dispersing, molding and curing the phenolic resin, the reinforced fibers, the graphene oxide and the coupling agent.

Description

Technical Field

[0001] The present application relates to the field of wear-resistant materials, and in particular to a method for preparing a phenolic resin friction material for reinforcing a fiber interface. Background Art

[0002] Automobile clutch friction surface is an important key component of automobile transmission parts. The development and improvement of clutch friction materials is a strong guarantee for the development of automobile industry. High speed, heavy load, safety and comfort are the development trends of heavy-duty vehicles, which puts forward higher and higher requirements for clutch friction surface. Fiber-reinforced materials are the supporting skeleton of clutch friction materials. They can provide the mechanical strength required by automobile friction materials and ensure that they can bear various impact forces, shear forces and contact pressures generated by automobile clutches during power transmission.

[0003] In order to make up for the shortcomings of conventional fibers in these aspects, people usually use methods such as silicone coupling agent treatment, plasma treatment, and chemical oxidation to improve the bonding force between the fiber and the matrix phenolic resin. At present, the fiber surface is chemically modified by silicone treatment to improve the wettability and compatibility of the fiber-resin interface. However, since the single silicone only forms a "point-to-point" bond between the resin matrix and the fiber surface, the degree of performance improvement is limited. Therefore, it is very necessary to propose a preparation method for a phenolic resin friction material that strengthens the fiber interface. Summary of the invention

[0004] The purpose of this application is to provide a method for preparing a phenolic resin friction material with a reinforced fiber interface, improve the thermal stability and chemical stability of the material, so that the application has good durability in complex environments, improve the performance of the friction material, and solve the existing technical defects and unattainable technical requirements.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a method for preparing a phenolic resin friction material for reinforcing a fiber interface, comprising the following steps: 1. Preparation of fibers with silicone-modified graphene oxide reinforced interfaces: Graphene oxide and an organosilicon coupling agent are pre-mixed and reacted, dispersed in a solvent under ultrasonic conditions, and the reinforced fibers are added to the graphene mixture.

[0006] 1.1. Mix 1-10 parts of graphene oxide, 1-10 parts of silicone coupling agent, 80-100 parts of solvent and 1-2 parts of catalyst; 1.2. Adjust the pH to 4-6, raise the temperature to 50-80°C, and fully stir the mixed solution obtained in step 1 for 6-24 hours to obtain an organosilicon-modified graphene oxide solution; 1.3. Mix 83-122 parts of the organosilicon-modified graphene oxide solution with 4-8 parts of water, adjust the pH value of the mixed solution to 3-5, and stir for 2-10 hours to obtain an organosilicon-modified graphene oxide reinforcing agent; 1.4. Add 10-25 parts of reinforcing fiber to the organosilicon-modified graphene oxide reinforcing agent and soak it in ultrasound for 10 min-2 h; In the present application, it should be noted that the reinforcing agent is in excess as a treatment liquid, and 10-25 parts of reinforcing fibers are a ratio relative to the friction resin formula and have nothing to do with the treatment liquid. Therefore, no matter how much organosilicon-modified graphene oxide reinforcing agent is used, it corresponds to 10-25 parts of reinforcing fibers.

[0007] In the present application, the parts are calculated by mass. Specifically, mass parts is an intuitive mass ratio method used in industry for the convenience of calculation, and the numbers directly represent the mass of the required ratio of substances.

[0008] 1.5. Take out after soaking, and dry in a drying environment at 60-80°C to obtain a fiber with an organosilicon-modified graphene oxide reinforced interface; 2. Preparation of fiber interface reinforced phenolic resin-based friction material: Phenolic resin, reinforcing fiber and filler are fully and evenly mixed and poured into a preheated mold, heated and compressed under a certain pressure and temperature, and solidified after a certain period of time.

[0009] 2.1. Mixing: put 10-25 parts of fiber with organosilicon-modified graphene oxide reinforced interface, 25-35 parts of phenolic resin, 5-10 parts of barium sulfate filler, 5-10 parts of calcium carbonate filler, 3-7 parts of aluminum oxide and 10-20 parts of graphite into a mixer and mix for 20-40 minutes; 2.2. Cold pressing: Place the product obtained in step 2.1 into a mold and pressurize it at a pressure of 5-10 MPa; 2.3. Hot pressing: put the product obtained in step 2.2 into a mold, control the pressing temperature to 140-180°C, the holding time to 30min-2h, and the pressing pressure to 20-40MPa; 2.4. Post-treatment: Put the product obtained in step 2.3 into an oven for heat preservation at a temperature of 160-200° C. for 2-5 hours to obtain a phenolic resin friction material with a reinforced fiber interface.

[0010] Preferably, in step 1.1, the solvent is ethanol, methanol, DMF or ethylene glycol.

[0011] Preferably, in step 1.1, the organic coupling agent is one or more of 3-aminopropyltriethoxysilane, γ-(2,3-epoxypropyloxy)propyltrimethoxysilane, tetraethyl orthosilicate and methyl orthosilicate.

[0012] Preferably, in step 1.1, the catalyst is one or more of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, N-hydroxysuccinimide, acetic acid and concentrated hydrochloric acid.

[0013] Preferably, in step 1.4, the reinforcing fibers are composed of one or more of metal fibers, glass fibers and ceramic fibers.

[0014] Preferably, in step 2.1, the phenolic resin is a powdered phenolic resin.

[0015] Compared with the prior art, the beneficial effects of this application are: The present invention modifies graphene oxide with organosilicon and introduces silanol groups through the hydrolysis and condensation reaction of organosilicon, which significantly enhances the chemical bonding between graphene oxide and various fibers. By forming stable chemical bonds, the adhesion and strength of the fiber-resin interface are improved, and the mechanical properties of the material are effectively improved. At the same time, the cross-linked structure between silicones further enhances the durability and thermal stability of the material, making the fibers of the composite material more resistant to extraction during use and improving the wear resistance. In addition, the introduction of graphene oxide into the resin matrix significantly improves the physical properties of the composite material. The two-dimensional structure of graphene oxide gives the material excellent anti-friction properties, which can effectively reduce the friction coefficient and stabilize the friction performance, thereby reducing wear and improving the strength and toughness of the overall material. This physical reinforcement effect significantly improves the deformation ability and impact resistance of the composite material when subjected to external forces. The dual effects of chemical modification and interface strengthening improve the thermal stability and chemical stability of the material, making the material more durable in complex environments.

[0016] 2. The organosilicon-modified graphene oxide and reinforced fibers of the present application are both one-step reactions, and the modification of the fibers by graphene can be achieved through simple mixing and dissolving steps. They are easy to construct, convenient for industrial large-scale production, and can be processed in large quantities. The modified fibers can significantly improve material properties, and in the long run, may reduce material usage and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the fiber synthesis structure of the organosilicon-modified graphene oxide enhanced interface in this application; Figure 2 This is a SEM image of a cross section of a phenolic resin friction material with a reinforced fiber interface in this application; Figure 3 This is the ATR infrared spectrum of organosilicon-modified graphene oxide in Example 1 of the present application; Figure 4 An overall view of a phenolic resin friction material with a reinforced fiber interface in the present application; In the figure: A, -OH stretching vibration peak at 3200cm-1; B, -C=O infrared absorption peak at 1723cm-1, C, C=C bond existing in graphene; D, infrared absorption peak of Si-O-Si at 1066cm-1. DETAILED DESCRIPTION

[0018] The following will be combined with the attached examples of the present application Figure 1-4 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0019] See also Figure 1-4 , Embodiments of the present application: Example

[0020] like Figure 1-4 As shown: 1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 1.1. Mix 5 parts of graphene oxide, 5 parts of 3-aminopropyltriethoxysilane, 89 parts of DMF solvent and 1 part of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride; 1.2. Adjust the pH to 4, raise the temperature to 60°C, and stir thoroughly for 12 hours to obtain an organosilicon-modified graphene oxide solution; 1.3. Mix 100 parts of the obtained organosilicon-modified graphene oxide solution with 4 parts of water, adjust the pH to 3, and stir for 4 hours to obtain an organosilicon-modified graphene oxide reinforcing agent; 1.4. Add 15 parts of glass fiber to the obtained organosilicon-modified graphene oxide reinforcing agent and soak it in ultrasound for 20 minutes; 1.5. Take out after immersion and dry at 80°C to obtain fibers with organosilicon-modified graphene oxide reinforced interface.

[0021] 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 2.1. Mixing: 20 parts of fiber with organosilicon-modified graphene oxide reinforced interface, 25 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 5 parts of aluminum oxide and 20 parts of graphite are put into a mixer and mixed for 30 minutes; 2.2, Cold pressing: the obtained product is poured into the mold with a pressure of 10MPa; 2.3. Hot pressing: then heat to 160°C, pressure 30Mpa, maintain pressure for 30min; 2.4. Post-treatment: The obtained product was placed in an oven and kept at 180°C for 3 hours. Example

[0022] 1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 1.1. Mix 10 parts of graphene oxide, 10 parts of 3-aminopropyltriethoxysilane, 80 parts of ethylene glycol and 2 parts of N-hydroxysuccinimide; 1.2. Adjust the pH to 4, raise the temperature to 70°C, and stir thoroughly for 18 hours to obtain an organosilicon-modified graphene oxide solution; 1.3. Mix 102 parts of the obtained organosilicon-modified graphene oxide solution with 4 parts of water, adjust the pH to 3, and stir for 4 hours to obtain an organosilicon-modified graphene oxide reinforcing agent; 1.4. Add 15 parts of glass fiber to the obtained organosilicon-modified graphene oxide reinforcing agent and soak it in ultrasound for 20 minutes; 1.5. Take out the fiber and dry it at 70°C to obtain the fiber with organosilicon-modified graphene oxide reinforced interface.

[0023] 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 2.1. Mixing: 20 parts of fiber with organosilicon-modified graphene oxide reinforced interface, 25 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 5 parts of aluminum oxide and 20 parts of graphite were put into a mixer and mixed for 30 minutes; 2.2, Cold pressing: the obtained product is poured into the mold with a pressure of 10MPa; 2.3. Hot pressing: then heat to 180℃, pressure 30Mpa, keep pressure for 30min; 2.4. Post-treatment: The obtained product was placed in an oven and kept at 160°C for 4 hours. Example

[0024] 1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 1.1. Mix 10 parts of graphene oxide, 10 parts of γ-(2,3-epoxypropyloxy)propyltrimethoxysilane, 80 parts of DMF and 2 parts of acetic acid; 1.2. Adjust the pH to 6, raise the temperature to 80°C, and stir thoroughly for 6 hours to obtain an organosilicon-modified graphene oxide solution; 1.3. Mix 102 parts of the obtained organosilicon-modified graphene oxide solution with 4 parts of water, adjust the pH to 3, and stir for 4 hours to obtain an organosilicon-modified graphene oxide reinforcing agent; 1.4. Add 15 parts of ceramic fiber to the obtained organosilicon-modified graphene oxide reinforcing agent and soak it in ultrasound for 20 minutes; 1.5. Take out and dry at 60°C to obtain fibers with organosilicon-modified graphene oxide reinforced interface.

[0025] 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 2.1. Mixing: 20 parts of organosilicon-modified graphene oxide reinforced interface fibers, 25 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 5 parts of aluminum oxide and 20 parts of graphite were put into a mixer and mixed for 30 minutes; 2.2, Cold pressing: the obtained product is poured into the mold with a pressure of 5MPa; 2.3. Hot pressing: heat to 180℃, pressure 30Mpa, maintain pressure for 30min; 2.4. Post-treatment: The obtained product was placed in an oven and kept at 200°C for 3 hours. Example

[0026] 1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 1.1. Mix 10 parts of graphene oxide, 8 parts of 3-aminopropyltriethoxysilane, 2 parts of tetraethyl orthosilicate, 89 parts of DMF solvent and 1 part of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride; 1.2. Adjust the pH to 4, raise the temperature to 50°C, and stir for 24 hours to obtain an organosilicon-modified graphene oxide solution. 1.3. Mix 100 parts of the obtained organosilicon-modified graphene oxide solution with 4 parts of water, adjust the pH to 3, and stir for 4 hours to obtain an organosilicon-modified graphene oxide reinforcing agent; 1.4. Add 15 parts of metal fiber to the obtained organosilicon-modified graphene oxide reinforcing agent and soak it in ultrasound for 20 minutes; 1.5. Take out and dry at 70°C to obtain fibers with organosilicon-modified graphene oxide reinforced interfaces.

[0027] 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 2.1. Put 20 parts of fiber with organosilicon-modified graphene oxide reinforced interface, 25 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 5 parts of aluminum oxide and 20 parts of graphite into a mixer and mix for 30 minutes; 2.2. The obtained product is poured into the mold at a pressure of 10 MPa; 2.3. Then raise the temperature to 170℃, pressure to 30Mpa, and maintain the pressure for 30min; 2.4. The obtained product was placed in an oven and kept at 190°C for 3 hours. Example

[0028] 1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 1.1. Mix 1 part of graphene oxide, 1 part of 3-aminopropyltriethoxysilane, 80 parts of ethanol and 1 part of N-hydroxysuccinimide; 1.2. Adjust the pH to 4, raise the temperature to 60°C, and stir thoroughly for 12 hours to obtain an organosilicon-modified graphene oxide solution; 1.3. Mix 83 parts of the obtained organosilicon-modified graphene oxide solution with 5 parts of water, adjust the pH to 3, and stir for 2 hours; 1.4. Add 15 parts of glass fiber to the obtained organosilicon-modified graphene oxide reinforcing agent and soak it in ultrasound for 30 minutes; 1.5. Take out and dry at 80°C to obtain fibers with organosilicon-modified graphene oxide reinforced interface.

[0029] 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 2.1. Mixing: 10 parts of fiber with organosilicon-modified graphene oxide reinforced interface, 35 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 3 parts of aluminum oxide and 10 parts of graphite are put into a mixer and mixed for 30 minutes; 2.2, Cold pressing: the obtained product is poured into the mold with a pressure of 10MPa; 2.3. Hot pressing: then heat to 160℃, pressure 40Mpa, keep pressure for 30min; 2.4. Post-treatment: The obtained product was placed in an oven and kept at 180°C for 3 hours.

[0030] The formula of Comparative Example 1 is the same as that of Example 1, except that the addition of the catalyst is removed in the preparation process of the fiber with organic silicon modified graphene oxide enhanced interface. 1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 5 parts of graphene oxide, 5 parts of 3-aminopropyltriethoxysilane and 89 parts of DMF solvent, adjust the pH to 4, heat to 60°C, and stir thoroughly for 12 hours to obtain an organosilicon-modified graphene oxide solution. 100 parts of the obtained organosilicon-modified graphene oxide solution were mixed with 4 parts of water, the pH was adjusted to 3, and stirred for 4 hours. 15 parts of glass fiber were added to the obtained organosilicon-modified graphene oxide reinforcing agent and ultrasonically soaked for 20 minutes. The fiber was taken out and dried at 80°C to obtain a fiber with an organosilicon-modified graphene oxide reinforced interface.

[0031] 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 20 parts of fiber with organic silicon modified graphene oxide reinforced interface, 25 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 5 parts of aluminum oxide, and 20 parts of graphite were put into a mixer and mixed for 30 minutes. The obtained product was poured into a mold with a pressure of 10MPa, and then heated to 160°C, with a pressure of 30Mpa, and kept at the pressure for 30 minutes. The obtained product was placed in an oven and kept at 180°C for 3 hours.

[0032] Comparative Example 2 has the same formula as Example 1, except that the step of removing the fiber step with the organosilicon-modified graphene oxide reinforced interface is removed. That is, 20 parts of glass fiber, 25 parts of phenolic resin, 10 parts of barium sulfate filler, 10 parts of calcium carbonate filler, 5 parts of aluminum oxide, and 20 parts of graphite are put into a mixer and mixed for 30 minutes. The obtained product is poured into a mold at a pressure of 10 MPa, and then the temperature is raised to 160°C, the pressure is 30 MPa, and the pressure is maintained for 30 minutes. The obtained product is placed in an oven and kept at 180°C for 3 hours. The impact strength and 350°C friction and wear tests were performed on Examples 1-5 and Comparative Examples 1-2. The experimental results are shown in Table 1.

[0033] Table 1 Test results of phenolic resin friction material at the interface of organosilicon graphene oxide reinforced fiber Serial number Impact strength kJ / m² Friction coefficient <![CDATA[Wear rate (10 -7 cm 3 / N.m)]]> Example 1 5.28 0.34 0.63 Example 2 5.72 0.26 0.42 Example 3 5.31 0.38 0.52 Example 4 5.63 0.28 0.41 Example 5 5.07 0.40 0.69 Comparative Example 1 4.42 0.54 1.23 Comparative Example 2 3.83 0.57 1.93 It can be seen from Table 1 that the impact strength of the phenolic resin friction materials at the interface of the organosilicon graphene oxide reinforced fiber in Examples 1-5 is greater than 5.0 kJ / m², the friction coefficient is greater than 0.25, and the wear rate is less than 0.7×10-7cm 3 / N•m. Compared with comparative examples 1-2, the overall performance of the friction plate of the high temperature resistant friction material is improved.

[0034] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that those skilled in the art can understand.

Claims

1. A method for preparing a phenolic resin friction material for reinforcing a fiber interface, characterized in that it comprises the following steps:

1. Preparation of fibers with silicone-modified graphene oxide reinforced interface 1.

1. Mix graphene oxide, silicone coupling agent, solvent and catalyst; 1.

2. Adjust the pH, raise the temperature, and fully stir the mixed solution obtained in step 1 to obtain an organosilicon-modified graphene oxide solution; 1.

3. Mixing the organosilicon-modified graphene oxide solution with water, adjusting the pH value of the mixed solution, and stirring to obtain an organosilicon-modified graphene oxide reinforcing agent; 1.

4. Add reinforcing fibers to the organosilicon-modified graphene oxide reinforcing agent and soak it with ultrasonic waves; 1.

5. Take out after immersion and dry to obtain fibers with organosilicon-modified graphene oxide reinforced interface; 2. Preparation of phenolic resin-based friction materials reinforced by fiber interface 2.

1. Mixing: Put the fiber with organic silicon modified graphene oxide reinforced interface, phenolic resin, barium sulfate filler, calcium carbonate filler, aluminum oxide and graphite into a mixer and mix; 2.2, cold pressing: placing the product obtained in step 2.1 into a mold and applying pressure; 2.

3. Hot pressing: putting the product obtained in step 2.2 into a mold, and pressurizing by controlling the pressing temperature and holding time; 2.

4. Post-treatment: Put the product obtained in step 2.3 into an oven for heat preservation to obtain a phenolic resin friction material with a reinforced fiber interface.

2. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 1, characterized in that, during the preparation process, the component ratio of each material in each step is: In the step 1.1, 1-10 parts of graphene oxide, 1-10 parts of silicone coupling agent, 80-100 parts of solvent and 1-2 parts of catalyst are mixed; In the step 1.3, 83-122 parts of the organosilicon-modified graphene oxide solution are mixed with 4-8 parts of water; In the step 1.4, 10-25 parts of reinforcing fibers are added to the organosilicon-modified graphene oxide reinforcing agent; In the step 2.1, 10-25 parts of organic silicon modified graphene oxide reinforced interface fibers, 25-35 parts of phenolic resin, 5-10 parts of barium sulfate filler, 5-10 parts of calcium carbonate filler, 3-7 parts of aluminum oxide and 10-20 parts of graphite are mixed.

3. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 1 or 2, characterized in that: During the preparation process, the contents that need to adjust the pH of the solution are: In step 1.2, the pH is adjusted to 4-6; In step 1.3, the pH is adjusted to 3-5.

4. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 3, characterized in that: During the preparation process, the temperature and pressure required in each step are: In the step 1.2, after adjusting the pH, the temperature is raised to 50-80°C; In the step 1.5, during drying, the temperature of the drying environment is 60-80°C; In the step 2.2, when pressurizing, the pressure is 5-10MPa; In the step 2.3, the pressing temperature is controlled to be 140-180° C. and the pressing pressure is controlled to be 20-40 MPa; In the step 2.4, the insulation temperature is 160-200°C.

5. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 4, characterized in that: During the preparation process, the duration of each step is: In the step 1.2, the time for sufficient stirring is 6-24 hours; In the step 1.3, the stirring time is 2-10h; In step 1.4, the ultrasonic immersion time is 10 min-2 h; In the step 2.1, the mixture is put into a mixer and mixed for 20-40 minutes; In the step 2.3, the pressure holding time is 30min-2h; In the step 2.4, the insulation time is 2-5 hours.

6. A method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 1, 2, 4 or 5, characterized in that: In the step 1.1, the solvent is ethanol, methanol, DMF or ethylene glycol.

7. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 6, characterized in that: In the step 1.1, the organic coupling agent is one or more of 3-aminopropyltriethoxysilane, γ-(2,3-epoxypropyloxy)propyltrimethoxysilane, tetraethyl orthosilicate and methyl orthosilicate.

8. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 7, characterized in that: In the step 1.1, the catalyst is one or more of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, N-hydroxysuccinimide, acetic acid and concentrated hydrochloric acid.

9. A method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 1, 2, 4, 5, 7 or 8, characterized in that: In the step 1.4, the reinforcing fiber is composed of one or more of metal fiber, glass fiber and ceramic fiber.

10. The method for preparing a phenolic resin friction material with a reinforced fiber interface according to claim 9, characterized in that: In the step 2.1, the phenolic resin is a powdered phenolic resin.

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