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CN-122011734-A - Water lubrication bearing and preparation method thereof

CN122011734ACN 122011734 ACN122011734 ACN 122011734ACN-122011734-A

Abstract

The invention provides a water lubrication bearing and a preparation method thereof, which belong to the technical field of sliding bearings, wherein the preparation method comprises the following steps of heating and melting 90-100 parts by weight of polyurethane prepolymer to obtain a liquid polyurethane matrix; adding 0.1-1 parts by weight of functional filler into the liquid polyurethane matrix, mixing to obtain a solution A, heating and melting 20-27 parts by weight of chain extender to obtain a solution B, mixing the solution A and the solution B, injecting the mixture into a pretreated die, placing the die into a centrifugal machine, performing solidification molding in a centrifugal rotation state, demolding after solidification to obtain a blank section, and processing the blank section to obtain the water-lubricated bearing. The water lubrication bearing prepared by the method has no risk of oil leakage, is safe and environment-friendly, has a simple structure, is low in cost, and is excellent in wear resistance and heat resistance.

Inventors

  • GONG JIANBIN
  • ZHANG WEI
  • LIU AIXUE
  • ZHANG MINGQIANG
  • ZHANG FENG

Assignees

  • 宁海宏德新材料科技有限公司
  • 浙江宏德新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20260316

Claims (10)

  1. 1. The preparation method of the water-lubricated bearing is characterized by comprising the following steps of: S1, heating and melting 90-100 parts by weight of polyurethane prepolymer to obtain a liquid polyurethane matrix; S2, adding 0.1-1 parts by weight of functional filler into the liquid polyurethane matrix, and mixing to obtain a solution A; s3, heating and melting 20-27 parts by weight of chain extender to obtain a solution B; s4, mixing the solution A and the solution B and then injecting the mixture into a pretreated die; S5, placing the die into a centrifugal machine, and performing solidification molding in a centrifugal rotation state; S6, demolding after solidification to obtain a blank section, and processing the blank section to obtain the water-lubricated bearing.
  2. 2. The method for manufacturing a water lubricated bearing according to claim 1, wherein the step S1 comprises: Adding 90-100 parts by weight of polyurethane prepolymer into a tank A of a casting machine; And heating the polyurethane prepolymer in the tank A to 70-90 ℃ to obtain the liquid polyurethane matrix and continuously stirring.
  3. 3. The method for manufacturing a water lubricated bearing according to claim 2, wherein the step S2 comprises: And adding 0.1-1 parts by weight of functional filler into the tank A at the temperature of 70-90 ℃ in the tank A, and continuously stirring and mixing to obtain the solution A.
  4. 4. A method of manufacturing a water lubricated bearing according to claim 3, wherein said step S3 comprises: adding 20-27 parts by weight of a chain extender into a tank B of a casting machine; and heating the chain extender to 110-120 ℃ and continuously stirring to obtain the solution B.
  5. 5. The method for manufacturing a water lubricated bearing according to claim 4, wherein the step S4 comprises: And mixing the solution A in the tank A and the solution B in the tank B through a mixing head of the casting machine, and then injecting the mixture into the mould.
  6. 6. The method of manufacturing a water lubricated bearing according to claim 1, wherein in S2, the functional filler is polyimide powder.
  7. 7. The method of producing a water lubricated bearing according to claim 1, wherein in S3, the chain extender is MOCA.
  8. 8. The method of manufacturing a water lubricated bearing according to claim 1, wherein in the S4, the inner wall of the mold is coated with a release agent, and the mold is subjected to a preheating treatment before injection.
  9. 9. The method of manufacturing a water lubricated bearing according to claim 1, wherein in step S5, the centrifugal rotation time is 20 to 30 minutes.
  10. 10. A water lubricated bearing, characterized in that it is produced by the production method according to any one of claims 1 to 9.

Description

Water lubrication bearing and preparation method thereof Technical Field The invention relates to the technical field of sliding bearings, in particular to a water-lubricated bearing and a preparation method thereof. Background The sliding bearing is a core part for reducing friction by surface contact with a supporting shaft body and relying on a lubricating medium in mechanical transmission, is widely applied to the industrial fields of metallurgy, mines, petrochemical industry, engineering machinery, machine tool motors and the like by virtue of the characteristics of strong bearing capacity and stable operation, and is also indispensable in the scenes of water treatment, ship propulsion systems and the like. Most sliding bearings in the prior industry adopt an oil lubrication mode, and can meet the requirements of heavy load and high-speed basic working conditions, but have a plurality of defects, and are difficult to adapt to the severe use requirements of various industries. Firstly, the oil lubrication system is easy to cause the problems of leakage and discharge of oil products, so that the water environment is polluted, sensitive water ecology such as a drinking water source, a natural protection area, a inland lake and the like is damaged, working condition media are polluted, and especially in industries such as food, pharmacy and the like with extremely high requirements on the purity of products, the quality and the use safety of the products can be directly influenced by the pollution of the oil products. Secondly, in flammable and explosive environments such as coal mines, oil fields, chemical industry and the like, the oil medium has combustibility, and if leakage occurs, fire or explosion can be caused, so that the safety risk is obviously increased. In addition, the oil lubrication bearing needs to rely on complex accessory equipment such as an oil tank, an oil pump, a cooler, a precise sealing device (such as a stern shaft seal), an oil filtering and monitoring system and the like, so that a large amount of equipment space is occupied, and the purchasing, installing and later maintenance costs are obviously increased. Based on the multiple short plates of the oil lubrication bearing in environmental protection, safety, cost and system suitability, various industries are in need of an alternative scheme which is environment-friendly, safe, simple in structure and more advantageous in cost. Disclosure of Invention In view of the above, the present invention provides a water lubricated bearing and a method for manufacturing the same, which aims to solve the technical problems mentioned in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: a distributed address allocation method based on a CAN bus, the method comprising the steps of: S1, heating and melting 90-100 parts by weight of polyurethane prepolymer to obtain a liquid polyurethane matrix; S2, adding 0.1-1 parts by weight of functional filler into the liquid polyurethane matrix, and mixing to obtain a solution A; s3, heating and melting 20-27 parts by weight of chain extender to obtain a solution B; s4, mixing the solution A and the solution B and then injecting the mixture into a pretreated die; S5, placing the die into a centrifugal machine, and performing solidification molding in a centrifugal rotation state; S6, demolding after solidification to obtain a blank section, and processing the blank section to obtain the water-lubricated bearing. Alternatively, the process may be carried out in a single-stage, The step S1 comprises the following steps: Adding 90-100 parts by weight of polyurethane prepolymer into a tank A of a casting machine; And heating the polyurethane prepolymer in the tank A to 70-90 ℃ to obtain the liquid polyurethane matrix and continuously stirring. Optionally, the step S2 includes: And adding 0.1-1 parts by weight of functional filler into the tank A at the temperature of 70-90 ℃ in the tank A, and continuously stirring and mixing to obtain the solution A. Optionally, the step S3 includes: adding 20-27 parts by weight of a chain extender into a tank B of a casting machine; and heating the chain extender to 110-120 ℃ and continuously stirring to obtain the solution B. Optionally, the step S4 includes: And mixing the solution A in the tank A and the solution B in the tank B through a mixing head of the casting machine, and then injecting the mixture into the mould. Optionally, in S2, the functional filler is polyimide powder. Optionally, in S3, the chain extender is MOCA. Optionally, in S4, the inner wall of the mold is coated with a release agent, and the mold is subjected to a preheating treatment before injection. Optionally, in the step S5, the centrifugal rotation time is 20-30min. In addition, to achieve the above object, the present invention also provides a water-lubricated bearing produced by the production method as described in an