A copper-based wear-resistant clutch plate and a preparation process thereof

Abstract

The application discloses a copper-based wear-resistant clutch friction plate and a preparation process thereof. The copper-based wear-resistant clutch friction plate is obtained by mixing powder material and a binder according to a mass ratio of 12-14:1 and then performing hot-press forming. The application adds a proper amount of composite carbon nanotubes into the material of the clutch friction plate, which can be uniformly dispersed and firmly combined in the material matrix of the clutch friction plate, greatly improving the wear resistance of the clutch friction plate. When the clutch works, the friction plate and the counter surface move relatively, and a continuous lubricating film can be gradually separated and formed on the contact interface. The lubricating film can greatly reduce the friction coefficient and reduce the generation of friction heat, thereby greatly protecting the friction surface, reducing surface wear, prolonging the service life, and ensuring the stability and reliability of the clutch transmission.

Description

Technical Field

[0001] This invention belongs to the field of friction plate technology, and specifically relates to a copper-based wear-resistant clutch friction plate and its preparation process. Background Technology

[0002] In the complex mechanical structure of a car, the clutch plays a crucial role as a bridge connecting the engine and the transmission. The clutch friction plate is one of the most critical and wear-prone components in this system, directly affecting the working condition of the entire clutch.

[0003] Clutch friction plates are typically made of high-strength, high-wear-resistant materials, designed to ensure a stable coefficient of friction and good wear resistance during high-speed rotation and frequent engagement and disengagement.

[0004] The working principle of a clutch is as follows: When the driver depresses the clutch pedal, a series of mechanical transmission mechanisms reduce or even completely release the pressure between the clutch pressure plate and the flywheel, causing relative sliding between the clutch friction plates, the flywheel, and the pressure plate, thus cutting off power. Conversely, when the driver releases the clutch pedal, the clutch pressure plate, under the action of springs, presses the friction plates tightly against the flywheel, restoring power transmission. In this process, the clutch friction plates play a crucial role. They must not only withstand the strong torque from the engine but also maintain good friction performance and wear resistance during frequent engagement and disengagement. Therefore, the material and design of the friction plates are critical to the overall performance and lifespan of the clutch.

[0005] However, the wear resistance of clutch friction plates manufactured by existing technologies is relatively average, which leads to a significant limitation on their service life.

[0006] Therefore, the present invention solves the corresponding problem by providing a copper-based wear-resistant clutch friction plate. Summary of the Invention

[0007] The purpose of this invention is to provide a copper-based wear-resistant clutch friction plate to overcome the shortcomings of the prior art.

[0008] The technical solution adopted in this invention is based on the following:

[0009] A copper-based wear-resistant clutch friction plate is obtained by mixing powder material and binder in a mass ratio of 12-14:1 and then hot pressing it.

[0010] The powder material is made of the following components by weight percentage: 1.2-1.5% iron powder, 0.3-0.6% manganese powder, 2-4% silica powder, 0.1-0.3% molybdenum disulfide powder, 2-4% composite carbon nanotubes, 0.3-0.5% zirconium silicate, and the remainder is copper powder.

[0011] As a further technical solution: the method for preparing the composite carbon nanotubes is as follows:

[0012] First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture;

[0013] Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours;

[0014] Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation.

[0015] After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes.

[0016] The heating rate is 10℃ / min;

[0017] Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution.

[0018] Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material.

[0019] The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes.

[0020] The heating rate is 5℃ / min;

[0021] As a further technical solution: the mass ratio of the carbon nanotubes to potassium hydroxide is 1:3-4;

[0022] The mass ratio of the mixture to water is 1:10.

[0023] As a further technical solution: the inert atmosphere is a nitrogen atmosphere.

[0024] As a further technical solution: the mass fraction of nickel nitrate in the composite treatment solution is 1%;

[0025] The aluminum nitrate has a mass fraction of 5%.

[0026] The cerium nitrate has a mass fraction of 0.2%.

[0027] As a further technical solution: the mixing ratio of the pretreated carbon nanotubes to the composite treatment liquid is 30-35g:200mL.

[0028] As a further technical solution: the adhesive is a mixture of butyl rubber and phenolic resin;

[0029] The mass ratio of butyl rubber to phenolic resin is 1:5.

[0030] A method for preparing a copper-based wear-resistant clutch friction plate includes the following steps:

[0031] (1) Material preparation: Prepare powder materials and binders separately;

[0032] (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder;

[0033] (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture;

[0034] (4) Molding: The mixture is injected into a preheated mold;

[0035] (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained.

[0036] As a further technical solution: the preheated mold is:

[0037] Preheat the mold to 158°C for 10 minutes.

[0038] As a further technical solution: the hot pressing pressure is 35-38MPa and the temperature is 372-380℃.

[0039] Beneficial effects:

[0040] This invention significantly improves the wear resistance of clutch friction plates by adding an appropriate amount of composite carbon nanotubes to the material. These nanotubes are uniformly dispersed and firmly bonded to the clutch friction plate matrix. When the clutch is in operation, the friction plate and its mating surface move relative to each other, and a continuous lubricating film gradually precipitates and forms on the contact interface. This lubricating film can significantly reduce the coefficient of friction and reduce the generation of frictional heat, thereby greatly protecting the friction surface, reducing surface wear, extending service life, and ensuring the smoothness and reliability of clutch transmission.

[0041] The clutch friction plate prepared by this invention not only has greatly enhanced wear resistance, but also significantly extended service life by more than 40% compared to the case without the addition of composite carbon nanotubes; furthermore, its transmission efficiency has been significantly optimized, noise has been greatly reduced, driving comfort has been improved, and it can maintain a low coefficient of friction in high-temperature environments, which helps to prevent friction plate failure due to overheating.

[0042] Clutches generate a lot of heat during operation, especially under high speed and high load conditions. This invention, through the rational proportioning of its components, makes the resulting clutch friction plates have excellent high-temperature stability and oxidation resistance. They can maintain stable physicochemical properties in high-temperature environments and effectively prevent material softening and failure caused by high temperatures.

[0043] The reasonable component ratio of this invention, when used in combination, has significant advantages in improving the wear resistance of clutch friction plates. It can enhance the overall performance and service life of clutch friction plates by increasing surface hardness and wear resistance, improving the stability of the friction coefficient, improving thermal stability and oxidation resistance, and optimizing the wear mechanism. This effectively ensures the stability of power transmission during vehicle operation, extends clutch life, improves driving comfort, and ensures driving safety. Attached Figure Description

[0044] Figure 1 This is a flowchart of a copper-based wear-resistant clutch friction plate. Detailed Implementation

[0045] 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.

[0046] The following are specific embodiments.

[0047] Example 1

[0048] A method for preparing a copper-based wear-resistant clutch friction plate includes the following steps:

[0049] (1) Material preparation: Prepare powder materials and binders separately:

[0050] The powder material and binder are prepared at a mass ratio of 12:1.

[0051] The powder material is made of the following components by weight percentage: 1.2% iron powder, 0.3% manganese powder, 2% silica powder, 0.1% molybdenum disulfide powder, 2% composite carbon nanotubes, 0.3% zirconium silicate, and the remainder is copper powder.

[0052] The preparation method of composite carbon nanotubes is as follows:

[0053] First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture;

[0054] Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours;

[0055] Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation.

[0056] After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes.

[0057] The heating rate is 10℃ / min;

[0058] Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution.

[0059] Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material.

[0060] The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes.

[0061] The heating rate is 5℃ / min;

[0062] The mass ratio of carbon nanotubes to potassium hydroxide is 1:3;

[0063] The mass ratio of the mixture to water is 1:10.

[0064] The inert atmosphere is nitrogen.

[0065] The mass fraction of nickel nitrate in the composite treatment solution is 1%.

[0066] The aluminum nitrate has a mass fraction of 5%.

[0067] The cerium nitrate has a mass fraction of 0.2%.

[0068] The mixing ratio of pretreated carbon nanotubes to composite treatment solution is 30g:200mL.

[0069] The adhesive is a mixture of butyl rubber and phenolic resin;

[0070] The mass ratio of butyl rubber to phenolic resin is 1:5.

[0071] (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder;

[0072] (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture;

[0073] (4) Molding: The mixture is injected into a preheated mold; the preheated mold is as follows:

[0074] Preheat the mold to 158°C for 10 minutes.

[0075] (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained. The hot pressing pressure is 36MPa and the temperature is 375℃.

[0076] Example 2

[0077] A method for preparing a copper-based wear-resistant clutch friction plate includes the following steps:

[0078] (1) Material preparation: Prepare powder materials and binders separately:

[0079] The powder material and binder are prepared at a mass ratio of 13:1.

[0080] The powder material is made of the following components by weight percentage: 1.3% iron powder, 0.4% manganese powder, 2.5% silica powder, 0.2% molybdenum disulfide powder, 2.5% composite carbon nanotubes, 0.35% zirconium silicate, and the remainder is copper powder.

[0081] The preparation method of composite carbon nanotubes is as follows:

[0082] First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture;

[0083] Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours;

[0084] Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation.

[0085] After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes.

[0086] The heating rate is 10℃ / min;

[0087] Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution.

[0088] Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material.

[0089] The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes.

[0090] The heating rate is 5℃ / min;

[0091] The mass ratio of carbon nanotubes to potassium hydroxide is 1:3.5;

[0092] The mass ratio of the mixture to water is 1:10.

[0093] The inert atmosphere is nitrogen.

[0094] The mass fraction of nickel nitrate in the composite treatment solution is 1%.

[0095] The aluminum nitrate has a mass fraction of 5%.

[0096] The cerium nitrate has a mass fraction of 0.2%.

[0097] The mixing ratio of pretreated carbon nanotubes to composite treatment solution is 32g:200mL.

[0098] The adhesive is a mixture of butyl rubber and phenolic resin;

[0099] The mass ratio of butyl rubber to phenolic resin is 1:5.

[0100] (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder;

[0101] (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture;

[0102] (4) Molding: The mixture is injected into a preheated mold; the preheated mold is as follows:

[0103] Preheat the mold to 158°C for 10 minutes.

[0104] (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained. The hot pressing pressure is 36MPa and the temperature is 375℃.

[0105] Example 3

[0106] A method for preparing a copper-based wear-resistant clutch friction plate includes the following steps:

[0107] (1) Material preparation: Prepare powder materials and binders separately:

[0108] The powder material and binder are prepared at a mass ratio of 12:1.

[0109] The powder material is made of the following components by weight percentage: 1.4% iron powder, 0.4% manganese powder, 3% silica powder, 0.2% molybdenum disulfide powder, 3% composite carbon nanotubes, 0.4% zirconium silicate, and the remainder is copper powder.

[0110] The preparation method of composite carbon nanotubes is as follows:

[0111] First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture;

[0112] Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours;

[0113] Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation.

[0114] After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes.

[0115] The heating rate is 10℃ / min;

[0116] Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution.

[0117] Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material.

[0118] The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes.

[0119] The heating rate is 5℃ / min;

[0120] The mass ratio of carbon nanotubes to potassium hydroxide is 1:3.2;

[0121] The mass ratio of the mixture to water is 1:10.

[0122] The inert atmosphere is nitrogen.

[0123] The mass fraction of nickel nitrate in the composite treatment solution is 1%.

[0124] The aluminum nitrate has a mass fraction of 5%.

[0125] The cerium nitrate has a mass fraction of 0.2%.

[0126] The mixing ratio of pretreated carbon nanotubes to composite treatment solution is 33g:200mL.

[0127] The adhesive is a mixture of butyl rubber and phenolic resin;

[0128] The mass ratio of butyl rubber to phenolic resin is 1:5.

[0129] (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder;

[0130] (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture;

[0131] (4) Molding: The mixture is injected into a preheated mold; the preheated mold is as follows:

[0132] Preheat the mold to 158°C for 10 minutes.

[0133] (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained. The hot pressing pressure is 36MPa and the temperature is 375℃.

[0134] Example 4

[0135] A method for preparing a copper-based wear-resistant clutch friction plate includes the following steps:

[0136] (1) Material preparation: Prepare powder materials and binders separately:

[0137] The powder material and binder are prepared at a mass ratio of 13.5:1;

[0138] The powder material is made of the following components by weight percentage: 1.3% iron powder, 0.5% manganese powder, 3.5% silica powder, 0.25% molybdenum disulfide powder, 3.5% composite carbon nanotubes, 0.45% zirconium silicate, and the remainder is copper powder.

[0139] The preparation method of composite carbon nanotubes is as follows:

[0140] First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture;

[0141] Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours;

[0142] Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation.

[0143] After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes.

[0144] The heating rate is 10℃ / min;

[0145] Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution.

[0146] Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material.

[0147] The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes.

[0148] The heating rate is 5℃ / min;

[0149] The mass ratio of carbon nanotubes to potassium hydroxide is 1:3.6;

[0150] The mass ratio of the mixture to water is 1:10.

[0151] The inert atmosphere is nitrogen.

[0152] The mass fraction of nickel nitrate in the composite treatment solution is 1%.

[0153] The aluminum nitrate has a mass fraction of 5%.

[0154] The cerium nitrate has a mass fraction of 0.2%.

[0155] The mixing ratio of pretreated carbon nanotubes to composite treatment solution is 32g:200mL.

[0156] The adhesive is a mixture of butyl rubber and phenolic resin;

[0157] The mass ratio of butyl rubber to phenolic resin is 1:5.

[0158] (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder;

[0159] (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture;

[0160] (4) Molding: The mixture is injected into a preheated mold; the preheated mold is as follows:

[0161] Preheat the mold to 158°C for 10 minutes.

[0162] (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained. The hot pressing pressure is 36MPa and the temperature is 375℃.

[0163] Example 5

[0164] A method for preparing a copper-based wear-resistant clutch friction plate includes the following steps:

[0165] (1) Material preparation: Prepare powder materials and binders separately:

[0166] The powder material and binder are prepared at a mass ratio of 14:1.

[0167] The powder material is made of the following components by weight percentage: 1.5% iron powder, 0.6% manganese powder, 4% silica powder, 0.3% molybdenum disulfide powder, 4% composite carbon nanotubes, 0.5% zirconium silicate, and the remainder is copper powder.

[0168] The preparation method of composite carbon nanotubes is as follows:

[0169] First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture;

[0170] Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours;

[0171] Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation.

[0172] After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes.

[0173] The heating rate is 10℃ / min;

[0174] Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution.

[0175] Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material.

[0176] The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes.

[0177] The heating rate is 5℃ / min;

[0178] The mass ratio of carbon nanotubes to potassium hydroxide is 1:4;

[0179] The mass ratio of the mixture to water is 1:10.

[0180] The inert atmosphere is nitrogen.

[0181] The mass fraction of nickel nitrate in the composite treatment solution is 1%.

[0182] The aluminum nitrate has a mass fraction of 5%.

[0183] The cerium nitrate has a mass fraction of 0.2%.

[0184] The mixing ratio of pretreated carbon nanotubes to composite treatment solution is 35g:200mL.

[0185] The adhesive is a mixture of butyl rubber and phenolic resin;

[0186] The mass ratio of butyl rubber to phenolic resin is 1:5.

[0187] (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder;

[0188] (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture;

[0189] (4) Molding: The mixture is injected into a preheated mold; the preheated mold is as follows:

[0190] Preheat the mold to 158°C for 10 minutes.

[0191] (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained. The hot pressing pressure is 38MPa and the temperature is 380℃.

[0192] Comparative Example 1:

[0193] Based on the technical solution of Example 1, no composite carbon nanotubes are added, and the rest of the technical solution remains unchanged.

[0194] Comparative Example 2:

[0195] Based on the technical solution of Example 1, the composite carbon nanotubes are replaced with untreated carbon nanotubes, while the rest of the technical solution remains unchanged.

[0196] test:

[0197] Performance tests were conducted on the samples (3750mm×1650mm×2420mm) of the examples and comparative examples. The coefficient of friction of the samples was tested at 600℃ and a rotational speed of 900 rpm. The test results are shown in Table 1.

[0198] Table 1

[0199] coefficient of friction Example 1 0.50 Example 2 0.51 Example 3 0.51 Example 4 0.53 Example 5 0.52 Comparative Example 1 0.73 Comparative Example 2 0.60

[0200] As can be seen from Table 1, the clutch friction plate prepared by the present invention has a low coefficient of friction and good wear resistance.

[0201] Using Example 3 as the base sample, the coefficient of friction was tested at different temperatures:

[0202] Table 2

[0203]

[0204]

[0205] As can be seen from Table 2, the friction coefficient of the clutch friction plate prepared by the present invention gradually decreases with increasing temperature and eventually tends to stabilize.

[0206] The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, shall be within the protection scope of the present invention as long as they do not exceed the spirit covered by the specification.

Claims

1. A copper-based wear-resistant clutch friction plate, characterized in that, It is obtained by mixing powder material and binder in a mass ratio of 12-14:1 and then hot pressing. The powder material is made of the following components by weight percentage: 1.2-1.5% iron powder, 0.3-0.6% manganese powder, 2-4% silica powder, 0.1-0.3% molybdenum disulfide powder, 2-4% composite carbon nanotubes, 0.3-0.5% zirconium silicate, and the remainder is copper powder. The method for preparing the composite carbon nanotubes is as follows: First, carbon nanotubes are mixed with potassium hydroxide powder to obtain a mixture; Add the obtained mixture to the crucible, add water, stir and mix evenly, adjust the temperature to 65℃, and keep it warm and stirring for 4 hours; Place the crucible at 110℃, keep it at that temperature, and let it stand for 12 hours to carry out continuous evaporation. After the water in the crucible has evaporated, it is heated to 680°C under an inert atmosphere and held for 2 hours. Then it is cooled to room temperature, washed with water to the center, and dried to obtain pretreated carbon nanotubes. The heating rate is 10℃ / min; Nickel nitrate, aluminum nitrate, and cerium nitrate were added to water in sequence to prepare a composite treatment solution. Pretreated carbon nanotubes were mixed with the composite treatment liquid, the temperature was adjusted to 80℃, and the mixture was kept warm and stirred for 4 hours. Then, it was ultrasonically dispersed for 10 minutes and then dried by rotary evaporation to obtain a solid composite material. The solid composite material was placed in a crucible, heated to 550°C, held for 4 hours, then cooled to room temperature, and ground to obtain composite carbon nanotubes. The heating rate is 5℃ / min.

2. The copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: The mass ratio of carbon nanotubes to potassium hydroxide is 1:3-4; The mass ratio of the mixture to water is 1:

10.

3. The copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: The inert atmosphere is a nitrogen atmosphere.

4. The copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: The composite treatment solution contains 1% nickel nitrate, 5% aluminum nitrate, and 0.2% cerium nitrate by mass.

5. The copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: The mixing ratio of the pretreated carbon nanotubes to the composite treatment solution is 30-35g:200mL.

6. The copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: The adhesive is a mixture of butyl rubber and phenolic resin; The mass ratio of butyl rubber to phenolic resin is 1:

5.

7. The method for preparing a copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: Includes the following steps: (1) Material preparation: Prepare powder materials and binders separately; (2) Melting: Add the binder to the melting furnace and heat it to 450°C to melt it, thus obtaining a liquid binder; (3) Mixing: Add powdered materials into the melting furnace, lower the temperature to 420℃, keep warm and stir for 10 minutes to obtain a mixture; (4) Molding: The mixture is injected into a preheated mold; (5) Hot pressing: After hot pressing, cooling, demolding, surface polishing, and inspection, the product is obtained.

8. The method for preparing a copper-based wear-resistant clutch friction plate according to claim 7, characterized in that: The preheated mold is: Preheat the mold to 158°C for 10 minutes.

9. The method for preparing a copper-based wear-resistant clutch friction plate according to claim 1, characterized in that: The hot pressing pressure is 35-38 MPa, and the temperature is 372-380℃.

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