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CN-121975562-A - Efficient wear-resistant antifriction additive and preparation method thereof

CN121975562ACN 121975562 ACN121975562 ACN 121975562ACN-121975562-A

Abstract

The invention discloses a high-efficiency antiwear antifriction additive and a preparation method thereof, which relate to the technical field of lubricating materials, wherein the additive comprises at least one metal compound, metal elements in the metal compound comprise one or a combination of at least two of Ni, cu, zn, ti and Ce, the synergistic effect is realized by controlling the mass ratio of each element, the metal compound is mixed and then subjected to ball milling treatment, and then calcination and surface modification are carried out, so that the additive is prepared.

Inventors

  • FANG YI
  • ZHANG BIN
  • ZHANG XIAOHAO

Assignees

  • 山西清科纳米新材料科技有限公司

Dates

Publication Date
20260505
Application Date
20260211

Claims (8)

  1. 1. A high-efficiency wear-resistant antifriction additive is characterized by comprising at least one metal composite compound, wherein metal elements in the metal composite compound comprise one or a combination of at least two of Ni, cu, zn, ti and Ce; the mass ratio of Ni element is 0.05-1.0%; the mass ratio of Cu element is 0.1-2.5%; The mass ratio of Zn element is 0.2-5%; The mass ratio of Ti element is 0.03-3%; The mass ratio of Ce element is 0.08-4%; the mass ratio of each element is controlled to realize the synergy.
  2. 2. A high-efficiency antiwear antifriction additive in accordance with claim 1 wherein said metal composite compound contains one or a combination of at least two of NiO, niCO 3 、NiCl 2 、NiSO 4 or Ni (OH) 2 ; A Cu element-containing composition comprising one or a combination of at least two of CuO, cu2O, cuCO 3 、CuCl 2 , or CuSO 4 ; A Zn element-containing composition comprising one or a combination of at least two of ZnO, znCO 3 、ZnCl 2 、ZnSO 4 , or Zn (OH) 2 ; a Ti element-containing composition comprising one or a combination of at least two of TiO 2 、TiCl 4 、Ti(SO4) 2 or Ti (OH) 4 ; ce element-containing composition comprising one or a combination of at least two of CeO 2 、CeCl 3 、Ce(NO 3 ) 3 or Ce 2 (SO 4 ) 3 .
  3. 3. A method of preparing the high efficiency antiwear antifriction additive of claim 1 or 2 comprising the steps of: Mixing the metal composite compounds in proportion, ball milling for 1-3 hours at 800-1200r/min to refine and uniformly disperse the particles; calcining the ball-milled material at 400-650 ℃ for 2-5h to promote the reaction and stabilization between the compounds; Step three, surface modification, namely adding a modifier after the material is cooled, and treating for 0.5-2 hours at 60-120 ℃, wherein the modifier comprises one or a combination of at least two of a silane coupling agent, stearic acid or a titanate coupling agent; and step four, drying, namely removing moisture and volatile matters in the materials to obtain the finished product additive.
  4. 4. The method for preparing the efficient antiwear antifriction additive of claim 3, characterized in that the mass ratio of the metal composite compound is 1:2:3, niO, cuO and ZnO are mixed, ball-milled for 2h at 1000r/min, calcined for 3h at 500 ℃, added with a silane coupling agent and modified for 1h at 80 ℃.
  5. 5. The method for preparing the efficient antiwear antifriction additive of claim 4, wherein Ni in NiO accounts for 0.3%, cu in CuO accounts for 0.8%, and Zn in ZnO accounts for 2%.
  6. 6. The method for preparing the efficient antiwear antifriction additive of claim 4, wherein the silane coupling agent accounts for 5% of the additive by mass.
  7. 7. The method for preparing the efficient antiwear antifriction additive of claim 3, characterized in that the mass ratio of the metal composite compound is 2:1, tiCl 4 、CeO 2 is ball-milled for 3 hours at 800r/min, calcined for 2 hours at 600 ℃, stearic acid is added, and modified for 2 hours at 60 ℃.
  8. 8. The method for preparing the efficient antiwear antifriction additive of claim 7, wherein Ti is 1% in TiCl 4 , and Ce is 1.5% in CeO 2 .

Description

Efficient wear-resistant antifriction additive and preparation method thereof Technical Field The invention relates to the technical field of lubricating materials, and relates to a high-efficiency wear-resistant antifriction additive and a preparation method thereof. Background In the field of mechanical engineering, lubricating oil is a key material for ensuring normal operation of equipment, and the performance of the lubricating oil directly influences the service life, energy consumption and operation stability of the equipment. With the development of industrial equipment to high load, high rotation speed and high temperature, the conventional lubricating oil has difficulty in meeting the requirements on wear resistance, antifriction performance, high temperature stability and the like. Friction modifiers are important additives for lubricating oils to reduce wear and frictional resistance by forming protective films at the friction interface. In the prior art, the friction modifier mostly adopts a single metal element or a simple compound, and has the defects of limited antiwear effect, easy failure under extreme working conditions, poor compatibility with base oil, easy agglomeration and sedimentation, complex preparation process, high cost, insufficient high-temperature stability and easy decomposition after long-term use. For example, although some gasoline engine oil friction modifiers in the current market can improve the anti-friction performance, the bearing capacity of the friction modifiers at high temperature and high pressure is insufficient, and some nano mesoporous carbon friction modifiers are complex in preparation process and large in scale production difficulty, so that development of a novel additive which is suitable for extreme working conditions, excellent in anti-wear effect and simple and convenient to prepare has important significance. Based on the above, the invention provides a high-efficiency anti-wear antifriction additive and a preparation method thereof, and the additive forms a high-strength protective film on a friction interface through the synergistic effect of specific metal composite compounds, so that the anti-wear antifriction performance and high-temperature stability of lubricating oil are obviously improved. Disclosure of Invention Aiming at the technical problems, the additive provided by the invention can form a high-strength protective film on a friction interface through the synergistic effect of specific metal composite compounds, so that the wear resistance and antifriction performance and high-temperature stability of lubricating oil are obviously improved. The invention adopts the technical scheme that the high-efficiency anti-wear antifriction additive comprises at least one metal composite compound, wherein metal elements in the metal composite compound comprise one or a combination of at least two of Ni, cu, zn, ti and Ce; the mass ratio of Ni element is 0.05-1.0%; the mass ratio of Cu element is 0.1-2.5%; The mass ratio of Zn element is 0.2-5%; The mass ratio of Ti element is 0.03-3%; The mass ratio of Ce element is 0.08-4%; By controlling the mass ratio of each element, the synergistic effect can be realized, and if the proportion exceeds the range, the film structure is loose or brittleness is increased, and the antiwear effect is reduced. The reason why the above metal element is selected is that: Ni has good ductility and wear resistance, and can form a compact protective film on the friction surface; Cu has excellent heat conductivity, can reduce friction heat accumulation, and is easy to form an alloy layer with other metals; zn can react with the metal surface to generate sulfide or oxide film, thus improving extreme pressure resistance; the oxide of Ti has high hardness and stability, and can enhance the wear resistance of the protective film; Ce is used as rare earth element, can promote the diffusion and combination of other elements and optimize the film structure. Preferably, in the metal composite compound, the Ni element includes one or a combination of at least two of NiO, niCO 3、NiCl2、NiSO4, and Ni (OH) 2; A Cu element-containing composition comprising one or a combination of at least two of CuO, cu2O, cuCO 3、CuCl2, or CuSO 4; A Zn element-containing composition comprising one or a combination of at least two of ZnO, znCO 3、ZnCl2、ZnSO4, or Zn (OH) 2; a Ti element-containing composition comprising one or a combination of at least two of TiO 2、TiCl4、Ti(SO4)2 or Ti (OH) 4; ce element-containing composition comprising one or a combination of at least two of CeO 2、CeCl3、Ce(NO3)3 or Ce 2(SO4)3. A method of preparing the high-efficiency antiwear antifriction additive comprising the steps of: Mixing the metal composite compounds in proportion, ball milling for 1-3 hours at 800-1200r/min to refine and uniformly disperse the particles; calcining the ball-milled material at 400-650 ℃ for 2-5h to promote the reaction and stabilization between