28results about How to "Improve tribological performance" patented technology

The invention discloses a ZnFeP-particle gradient abrasion-resistant chemical composite coating and a preparation method of the ZnFeP-particle gradient abrasion-resistant chemical composite coating. The ZnFeP-particle gradient abrasion-resistant chemical composite coating is divided into a passivation layer, a low-iron ZnFeP-particle chemical composite coating and a high-iron ZnFeP-particle chemical composite coating from outside to inside, and a gradient coating with the corrosion potential from low to high is formed; the content of iron in the low-iron ZnFeP-particle chemical composite coating ranges from 0.03 wt% to 1.0 wt%, the thickness of the low-iron ZnFeP-particle chemical composite coating ranges from 8 micrometers to 18 micrometers, and the hardness of the low-iron ZnFeP-particle chemical composite coating ranges from 150 HV to 300 HV. The content of iron in the high-iron ZnFeP-particle chemical composite coating ranges from 5 wt% to 30 wt%, the thickness ranges from 8 micrometers to 18 micrometers, and the hardness ranges from 500 HV to 650 HV. By means of the ZnFeP-particle gradient abrasion-resistant chemical composite coating, a metal component can be resistant to abrasion and corrosion, and therefore the service capacity of the metal component such as electric power fittings in the abrasion working condition is obviously improved.

The invention provides a radial sliding bearing with a groove-type textured surface and a friction testing method thereof.The radial sliding bearing comprises a bearing, a journal, lubricating oil and surface textures, the lubricating oil is arranged between the inner surface of the bearing and the outer surface of the journal, and the surface textures are in a groove type and are evenly distributed on the inner surface of the bearing; the shaft neck rotates around the geometric center of the shaft neck, so that lubricating oil in a bearing gap generates a fluid dynamic pressure effect to balance an external load; the centerline of the journal is parallel to the centerline of the bearing, and the film thickness of the lubricating oil in the bearing clearance is symmetrically distributed about the centerline of the bearing. According to the radial sliding bearing with the groove type textured surface and the friction testing method of the radial sliding bearing, distribution parameters and shape parameters of the surface texture are optimally designed, so that the bearing with the textured surface can obtain a more remarkable secondary fluid dynamic pressure effect, and the tribological performance of a friction pair interface of the radial sliding bearing is improved.

According to the composite protective coating for the bolt surface, the preparation method and the application, the composite coating takes a bolt of a common model of an iron tower as a substrate, and a cathode arc ion plating technology and a magnetron sputtering technology are combined; the preparation method comprises the four main steps of substrate surface pretreatment, metal bonding layer preparation, metal nitride bearing layer preparation and surface molybdenum disulfide solid self-lubricating layer preparation. According to the method, reliable preparation of the composite coating on the complex thread surface of the bolt is achieved, the anti-loosening capacity of the bolt is remarkably improved through the low friction coefficient, good bearing capacity and excellent wear resistance, and meanwhile the composite coating further has good corrosion resistance and has wide application prospects in iron towers for communication, electric power and the like.

The invention discloses a vacuum high-wear-resistance zirconia-based composite ceramic material as well as a preparation method and application thereof, and belongs to the technical field of ceramic material preparation. The preparation method comprises the following steps: 1) sufficiently and uniformly mixing zirconium oxide powder, a stabilizer and absolute ethyl alcohol to prepare mixed slurry; 2) adding whiskers into the mixed slurry, fully and uniformly stirring, and then drying and sieving to obtain mixed powder; 3) carrying out static pressure molding on the mixed powder to prepare a composite ceramic biscuit, and then carrying out vacuum sintering and annealing treatment to prepare composite ceramic; and 4) performing high-temperature carburizing treatment on the composite ceramic to obtain carburized composite ceramic, and performing surface treatment to obtain the vacuum high-wear-resistance zirconia-based composite ceramic material. The vacuum wear rate of the zirconia-based composite ceramic material provided by the invention is reduced by 1-2 orders of magnitude compared with that of a traditional yttria-stabilized zirconia material, and a novel high-wear-resistance ceramic material is provided for precise friction driving parts in the field of aerospace.

The invention relates to the technical field of composite materials, in particular to a PTFE composite material for a shaft sleeve and a preparation method of the PTFE composite material. The PTFE composite material for the shaft sleeve consists of the following raw materials in parts by weight: 80-140 parts of polytetrafluoroethylene powder, 3-8 parts of polyphenylene sulfide, 8-12 parts of modified glass fibers and 10-15 parts of a reinforcing agent. The lubricating property of a base material is effectively improved by adding the modified glass fiber, and meanwhile, the wear resistance and the mechanical property of the polytetrafluoroethylene composite material are favorably improved by improving the tribological property, enhancing the mechanical strength and improving the interface bonding and load dispersion through the reinforcing agent.

The invention discloses a synthesis method of oil-soluble trinickel disulfide nanoparticles. The synthesis method comprises the following steps: adding nickel stearate and sulfur powder into a reaction container; a solvent and a surface modifier are added into the reaction container to obtain an initial mixed solution, the solvent is octadecene, and the surface modifier is oleylamine; performing ultrasonic treatment on the initial mixed solution to uniformly mix the initial mixed solution to obtain a mixed solution; introducing inert gas into the reaction container to exhaust air in the reaction container so as to ensure that the reaction is carried out in an inert atmosphere; and carrying out a hot stirring reaction on the mixed solution, and after the reaction is finished, carrying out solid-liquid separation and washing to obtain the oil-soluble trinickel disulfide nanoparticles. Particularly, an intelligent technology is also adopted to help to quickly determine proper synthesis parameters according to actual synthesis conditions and requirements, so that the intelligent degree of the synthesis process of the oil-soluble trinickel disulfide nanoparticles is improved.

The invention provides a high-entropy ceramic nano composite structure coating as well as a preparation method and application thereof, and belongs to the technical field of hard protective coatings. The high-entropy ceramic nano-composite structure coating provided by the invention comprises a plurality of structural units which are laminated on the surface of a substrate, wherein each structural unit comprises a template layer and a modulation layer arranged on the upper surface of the template layer; the template layer is in contact with the substrate; the template layer is made of a nitrogen-doped TiAlCrZrWV alloy material, and the modulation layer is made of a nitrogen-doped carbon material. According to the high-entropy ceramic nano-composite structure coating and the preparation method thereof, the template layer is high in hardness and elasticity modulus, the modulation layer has good tribological performance, when the modulation layer is inserted into the middle of the template layer, on one hand, improvement of friction performance is promoted, on the other hand, the toughness and hardness of the high-entropy ceramic nano-composite structure coating are improved, and balance between the brittleness and abrasion resistance of the coating is achieved.

The invention discloses a core-shell structure hybrid particle, an anti-corrosion wear-resistant coating and a preparation method and application of the core-shell structure hybrid particle and the anti-corrosion wear-resistant coating. The core-shell structure hybrid particle comprises a polytetrafluoroethylene particle serving as a core, an organic polymer transition layer wrapping the surface of the core and a two-dimensional lamellar material layer arranged on the surface of the organic polymer transition layer in a stacked mode. Wherein the two-dimensional lamellar material layer is formed by wrapping a two-dimensional lamellar material on the surface of the organic polymer transition layer at least through hydrogen-bond interaction. The core-shell structure hybrid particles in the anticorrosive wear-resistant coating prepared by the invention can effectively fill the micropore defect in the rapid curing process of the water-based resin, improve the density and physical shielding effect of the coating, and enhance the corrosion resistance of the coating in the deep sea environment; meanwhile, by adding the core-shell structure hybrid particles, the friction coefficient and the wear rate of the coating can be effectively reduced, and the tribological performance of the coating is improved.

The invention relates to a phenolic resin-based composite material suitable for harsh dry friction working conditions. The composite material is prepared from the following components in parts by mass: 60-90 parts of phenolic resin, 5-20 parts of reinforced fibers and 5-20 parts of functionalized silicate nano filler. According to the invention, the generation of a polymer-metal friction interface transfer membrane is regulated and controlled by adding the sodium silicate nano functional filler functionalized by the silane coupling agent and the reinforced fibers, so that the polymer composite material shows extremely low friction coefficient and wear rate under harsh dry friction working conditions, and the adaptability of a phenolic aldehyde matrix to the environment is improved. Meanwhile, the preparation process is simple, the cost is low, and batch production is facilitated.

The invention provides a composite self-lubricating microcapsule filler as well as a preparation method and application thereof, and belongs to the technical field of lubricating materials. The composite self-lubricating microcapsule filler comprises microcapsules and a two-dimensional material represented by graphene (Gr), wherein the microcapsules comprise various microcapsules wrapping a single core material or microcapsules wrapping a composite core material; the microcapsule is prepared by adopting an in-situ polymerization method, and a core material of the microcapsule comprises a lubricant and liquid crystal. The liquid crystals and the two-dimensional material can generate a size synergistic effect, so that the liquid crystals can be orderly arranged on the plane of the two-dimensional material. And mixing the microcapsule wrapping the single lubricant and the single liquid crystal with graphene according to a ratio of (50-150): (1-5): (2-8) to obtain the composite self-lubricating microcapsule filler. The composite self-lubricating microcapsule filler can generate a good synergistic effect, and can be applied to a polymer lubricating base material to obtain a composite lubricant with excellent performance.

The invention provides phosphate amine salt conductive lubricating grease as well as a preparation method and application thereof. The conductive lubricating grease comprises the following components in percentage by mass: 5-20% of oil-soluble ionic liquid, 1-15% of a thickening agent and the balance of base oil, the oil-soluble ionic liquid is phosphate amine salt ionic liquid obtained by reacting lauryl amine with diisooctyl phosphate. The preparation method comprises the following steps: preparing an oil-soluble ionic liquid, mixing, saponifying and refining to obtain the phosphate amine salt conductive lubricating grease. The preparation of the phosphate amine salt conductive lubricating grease is realized.

The invention belongs to the technical field of brake friction materials and powder metallurgy, and discloses a preparation and regulation method for a three-dimensional latticed structure in a copper-based brake friction material. The copper-based brake friction material is mainly composed of copper-coated iron powder, molybdenum disulfide, crystalline flake graphite, silicon dioxide, superfine copper powder and other functional components. Wherein the three-dimensional latticed structure is constructed by superfine copper powder, and the comprehensive performance of the copper-based brake friction material is improved through multiple excellent performances such as high heat conduction performance and mechanical strength of the three-dimensional latticed structure; according to the invention, structural design and preparation are carried out on raw material powder by adopting a method of prefabricated particle preparation and particle bonding and coating, so that all functional components are uniformly distributed on the friction material, a three-dimensional latticed structure can be constructed, and the mechanical property and tribological property of the friction material are greatly improved; the copper-based brake friction material is high in mechanical performance, stable in friction coefficient, high in heat conduction performance, low in wear rate and excellent in performance under extreme working conditions.

The invention relates to a 42CrMo-based self-lubricating material with a surface texture soft coating composite interface structure and a preparation method of the 42CrMo-based self-lubricating material. 42CrMo steel is mainly used as a substrate material, and a WS2 soft coating is combined on the surface of the substrate material through a magnetron sputtering deposition process; and then a composite texture of a hexagonal texture and a regular polygon texture is prepared on the surface of the WS2 soft coating by adopting a laser marking technology, and grooves and grooves of the composite texture are filled with a soft metal lubricant Sn-Cu-Zn and a reinforced phase TiB2 by adopting a high-temperature infiltration technology, so that the 42CrMo-based self-lubricating material with the surface texture soft coating composite interface structure is obtained. According to the 42CrMo-based self-lubricating material and the preparation method thereof, structural optimization of the surface texture and compounding of the soft metal lubricant and the lubricating coating are introduced into interface construction of the self-lubricating material, the lubricating performance is improved while the interface bearing capacity is guaranteed, the prepared 42CrMo-based self-lubricating material has excellent antifriction and wear-resisting performance, and the tribological performance of the 42CrMo steel material is effectively improved.

The invention belongs to the technical field of high-entropy alloys, and discloses a Laves phase enhanced wear-resistant high-entropy alloy and a preparation method thereof. The wear-resistant high-entropy alloy is prepared from the following element components in percentage by atomic mass: 23% to 23.375% of Fe, 23% to 23.375% of Co, 23% to 23.375% of Ni, 23% to 23.375% of V and 6.5% to 8% of Hf, and the total percentage is 100%. The organization structure of the wear-resistant high-entropy alloy is a face-centered cubic structure FCC phase and Laves phase coexisting double-phase structure. The wear-resistant high-entropy alloy prepared by the invention is uniform in component distribution and relatively high in density; the wear-resistant high-entropy alloy has a eutectic structure in which an FCC phase and a Laves phase coexist, so that the wear-resistant high-entropy alloy prepared by the preparation method has relatively low friction coefficient and grinding crack width and good friction and wear properties.

The present invention provides a bearing lubricating material based on modified polytetrafluoroethylene and modified carbon fiber, which is prepared by mechanical blending, pre-pressing, sintering and other processes with modified polytetrafluoroethylene resin as a polymer matrix, fluorosilane modified carbon fiber as a main reinforcing filler, and a small amount of lubricating filler and functional filler as a modified component. The polytetrafluoroethylene resin is polymerized and modified, so that its processing performance is greatly improved on the basis of maintaining the original physical and chemical properties of polytetrafluoroethylene; the carbon fiber is activated and grafted with fluorosilane to improve the interface bonding between the carbon fiber and the polytetrafluoroethylene resin; on this basis, combined with the introduction of lubricating fillers and functional fillers and the control of component content, the mechanical strength, tribological properties, thermal conductivity and dimensional stability of the composite material are comprehensively improved, and the application of the lubricating components of inlaid and liner polytetrafluoroethylene / metal composite sliding bearings can effectively improve their service performance and service life.

The invention provides a super wear-resistant and scratch-resistant UV coating. The super wear-resistant and scratch-resistant UV coating is prepared from the following components in parts by weight: 100-150 parts of modified polyurethane acrylic resin, 20-40 parts of a reactive diluent, 4-6 parts of a photoinitiator, 3-10 parts of pigment-loaded foamed aluminum oxide particles, 3-10 parts of a BYK331 leveling agent and 0.5-2 parts of an auxiliary agent, the particle size of the foamed aluminum oxide particles loaded with the pigment is 10-100 microns, and the porosity of the foamed aluminum oxide is 80-97%. According to the super wear-resistant and scratch-resistant UV coating and the preparation method thereof provided by the invention, a micro-nano structure is formed on the surface of a coating through a micro-structure of foamed aluminum oxide particles, a nano-structure of pigment and micro (nano)-meter holes of the foamed aluminum oxide particles, so that the tribological performance of the coating is improved, friction and wear are reduced, and the anti-friction and anti-drag performance of the coating is improved; foamed aluminum oxide is of a porous structure, has rich pore structures, can adsorb a large amount of pigment, enables the pigment to be uniformly dispersed, and avoids agglomeration caused by direct addition of the foamed aluminum oxide into the coating and nonuniform color of the coating.

The application discloses a 3D printing titanium alloy workpiece with a composite modified layer on the surface and a preparation method. The 3D printing titanium alloy workpiece has a composite modified layer on the surface, the composite modified layer comprises a first texture, a solid lubricating layer and a second texture, the texture is prepared by extrusion molding, the solid lubricating layer is prepared by powder laying and extrusion, the solid lubricating layer is located between the first texture and the second texture, and the second texture is located at the center position of the solid lubricating layer. According to the preparation method, the solid lubricant is filled and extruded quantitatively in the mode of "filling first and extruding later", and the texture is extruded at the same time, the preparation efficiency of the composite modified layer is improved, the synergistic effect of the texture and the solid lubricating layer is exerted, the friction and wear performance of the workpiece is improved, the wear in the process of contact between the workpiece and other workpieces is reduced, and the service life of the workpiece is prolonged.

The invention provides an anti-corrosion and wear-resistant integrated coating, a composite coating as well as a preparation method and application of the composite coating. The coating for preparing the composite coating is prepared from the following raw materials in parts by weight: 10 to 20 parts of cathode water-based acrylic emulsion, 0.1 to 0.5 part of protonated modified MXene nanosheet, 60 to 90 parts of solvent, 0.02 to 0.04 part of dispersing agent and 0.02 to 0.04 part of defoaming agent. And the protonation modified MXene nanosheet is a MXene nanosheet which is obtained by grafting a tetrabutyl phosphorus hydroxide benzotriazole lignin composite material and protonating the composite material by using 1 mol / L HCl. The preparation method of the composite coating comprises the following steps: stirring and mixing the raw materials to obtain mixed slurry; and coating the surface of a base material with the mixed slurry through an electrophoretic deposition technology, and curing to obtain the corrosion-resistant and wear-resistant integrated composite coating. The composite coating is applied to the field of marine corrosion prevention. The composite coating provided by the invention has excellent corrosion resistance and wear resistance.

The invention discloses a perovskite composite disulfide thin film material as well as a preparation method and application thereof. The perovskite composite disulfide thin film material is an ABX3-MY2 composite thin film, wherein A is one or more + 1 valence or + 2 valence metal or organic cations; b is one or more + 2 or + 4 metal or organic cations; x is one or more of-1-valent or-2-valent nonmetal or organic anions; m is a IV-VI group transition metal, and Y is a chalcogenide element. The perovskite material is doped in the layered transition metal disulfide compound material, so that the crystallinity, the crystal orientation, the microstructure and the surface appearance of the disulfide compound in the film can be effectively improved, the tribological performance of the film in a vacuum environment is further improved, and the film has a certain application prospect in the field of space lubrication.

The invention discloses a functionalized carbon quantum dot and MXene composite lubricating material and a preparation method thereof. The preparation method comprises: dissolving urea and sodium hydroxide into acetaldehyde, mixing and stirring, ultrasonically treating, centrifugally washing to obtain NCQDs, dispersing the NCQDs in water to obtain an NCQDs dispersion; slowly adding Ti3AlC2 powder into hydrofluoric acid while stirring, isothermally stirring the obtained suspension for 48 to 72 hours, centrifugally washing the obtained product and vacuum drying it to obtain Ti3C2T x Powder; Ti3C2T prepared in step 2 x The powder was added to the NCQDs dispersion, stirred for 10 to 24 hours, and allowed to stand for 5 to 10 hours. The obtained product was centrifuged and freeze-dried to obtain NCQDs@Ti3C2T x Powder; prepare green and environmentally friendly functional carbon quantum dots and MXene composite lubricating materials with excellent anti-friction and anti-wear properties, with a simple reaction process and low cost.

The invention relates to the technical field of lubricating materials, in particular to a composite additive for lubricating oil and a preparation method thereof. The composite additive for the lubricating oil consists of the following components in parts by weight: 4-10 parts of base oil, 3-6 parts of copper dialkyl dithiophosphate, 1-2 parts of intercalation modified bentonite, 1-2 parts of a composite three-dimensional copper-based solid-liquid additive, 4-8 parts of a high-temperature antioxidant, 8-10 parts of nano borate, 12-18 parts of an antirust agent and 1-5 parts of trimethylolpropane ester. By adding a small amount of the composite three-dimensional copper-based solid-liquid additive and intercalation modified bentonite, the lubricating property of the lubricating oil is synergistically improved, and the lubricating oil has a good application prospect.

The invention provides a lubricating-repairing bifunctional nano composite material as well as a preparation method and application thereof, and relates to the technical field of nano fillers. The invention provides a lubricating-repairing dual-function nano composite material. The lubricating-repairing dual-function nano composite material comprises a nitrogen-doped hierarchical pore carbon nanorod, a repairing agent and a lubricating agent, wherein the repairing agent is positioned in a pore channel of the nitrogen-doped hierarchical pore carbon nanorod, and the surface of the nitrogen-doped hierarchical pore carbon nanorod is coated with the lubricating agent. The nitrogen-doped hierarchical pore carbon nanorods are combined with the self-repairing agent and the lubricant, so that the nitrogen-doped hierarchical pore carbon nanorods have excellent friction-reducing, wear-resisting and repairing capabilities, can meet the application requirements in the fields of self-repairing and self-lubricating, and meet the requirements of high precision, high reliability and long service life of polymer-based self-lubricating materials under harsh working conditions; and the method has important significance for promoting the practical application of the polymer self-lubricating material in the modern high-end equipment industry.

The present invention relates to the technical field of polymer materials, and discloses a corrosion-resistant, high-temperature-resistant, high-heat-conductivity material based on polyetheretherketone, a preparation method, and a mold. The preparation method comprises: polycondensing alkenyl biphenol, biphenol, and pyrene difluorodiphenyl sulfone under catalyst conditions to obtain modified polyethersulfone, mixing the modified polyethersulfone with carbon nanotubes and a solvent to obtain a carbon nanotube / modified polyethersulfone composite material; adding the carbon nanotube / modified polyethersulfone composite material, modified silicon carbide nanowires, polytetrafluoroethylene powder, and silicone resin to polyetheretherketone, and melt-extruding to obtain a corrosion-resistant, high-temperature-resistant, high-heat-conductivity material based on polyetheretherketone; the material has good corrosion resistance and heat resistance and thermal conductivity, and excellent mechanical properties and wear resistance, and can be used in molds.

The application discloses an environment-friendly eutectic solvent anti-friction and anti-wear additive and a preparation method and application thereof, and belongs to the field of lubricating additives.The application uses cetyltrimethylammonium chloride / cetyltrimethylammonium bromide and natural plant source thymol as raw materials, mixes them in a molar ratio of 1:1 to 1:3, stirs them at a constant temperature of 90 DEG C for 2 hours, and thus a sulfur-free and phosphorus-free transparent stable eutectic solvent is prepared without an organic solvent and a catalyst; the solvent is used as an anti-friction and anti-wear additive, is added into lithium-based lubricating grease in an addition amount of 0.5wt% to 2.0wt%, is uniformly dispersed through three-roll grinding, and thus high-performance modified lubricating grease suitable for severe working conditions is obtained.The raw materials are green and renewable, the preparation process is mild and simple, and the environment compatibility is excellent; a low addition amount can significantly reduce a friction coefficient and wear volume, a dense adsorption film is formed on a metal friction surface, and the application is particularly suitable for long-acting anti-friction and anti-wear lubrication under high-speed and boundary lubrication working conditions such as cotton picker picking spindles.

The application discloses a zirconia ceramic surface strong bonding force molybdenum disulfide-based coating and a preparation method and application thereof, and the coating is composed of a substrate surface modification layer, a Cr adhesive layer, a hard gradient transition layer and a molybdenum disulfide-based target layer, wherein the modification layer is formed by high-energy chromium ion implantation, and the hard gradient transition layer is composed of a chromium-doped amorphous carbon layer, a chromium and molybdenum co-doped amorphous carbon layer, a molybdenum-doped amorphous carbon layer and a molybdenum disulfide layer, that is, transition from the Cr metal layer to the MoS2, and the component detailed change is Cr / a-C, Cr / Mo / a-C, Mo / a-C, MoS2 / a-C and MoS2.The application can enhance the film-substrate bonding strength of the zirconia and the molybdenum disulfide-based coating, effectively improve the tribological performance of the zirconia ceramic, and provides technical support for realizing high performance and long service life of the zirconia friction pair.

This invention belongs to the field of clutch manufacturing technology and aims to solve the problem that the friction performance of existing heavy-duty clutches gradually decreases over time, thus affecting their transmission smoothness and shortening their service life. To this end, this invention provides a method for preparing a surface-textured clutch plate. The method includes: preparing a mixed powder comprising metal matrix powder, solid lubricant powder, reinforcing phase powder, and a forming agent, and mixing them uniformly in a predetermined ratio; loading the mixed powder into a mold for cold pressing to obtain a green blank with a predetermined geometric structure; sintering the green blank under a protective atmosphere with stepped heating; processing microtextures on the friction surface of the sintered part using an ultrasonic impact device; and cleaning the surface of the ultrasonically impacted workpiece. This invention can optimize the friction performance of the clutch, enabling it to maintain high friction characteristics for a long time and preventing a rapid reduction in the clutch's service life.

The invention discloses a wear-resistant coating for a bearing and a preparation method and application thereof.The wear-resistant coating at least comprises polyamide-imide resin powder containing hydrophobic groups, a lubricating phase and a modified reinforcing phase, and the modified reinforcing phase comprises a modified fibrous reinforcing phase and a modified powdery reinforcing phase; the modified fibrous reinforced phase is prepared by degumming, etching and treating a fibrous reinforced phase with a coupling agent, and the modified powdery reinforced phase is prepared by carrying out surface pretreatment and acidizing treatment on a powdery reinforced phase. Compared with a conventional polyamideimide resin wear-resistant material, under the combined action of the polyamideimide resin powder containing hydrophobic groups, the lubricating phase and the modified reinforcing phase, the coating has lower water absorption, better self-lubricating property and higher bearing capacity, and can be widely applied to manufacturing of bearings; not only can the use requirement of a high-humidity environment be met, but also mechanical faults can be obviously reduced, so that the service life of the bearing is longer.

The invention provides antifriction and wear-resistant diamine benzoxazine resin as well as a preparation method and application thereof, and belongs to the technical field of thermosetting resin. According to the invention, 4, 4 '-ethylene diphenylamine is taken as an amine source, and the diamine benzoxazine resin is prepared by adjusting the length of a flexible chain segment; the diamine benzoxazine resin has excellent thermal stability and friction performance, the friction coefficient is as low as 0.06-0.1, the wear rate is 4.5-8.0 * 10 <-5 > mm < 3 > / Nm, and the diamine benzoxazine resin still keeps good friction reduction and wear resistance under high load and high speed; the diamine benzoxazine resin has low polymerization temperature and very excellent thermal, mechanical and friction properties; the preparation method of the diaminobenzoxazine resin is simple, high in yield, relatively low in equipment requirement, easy to realize large-scale production and very good in practicability.