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Silt environment resistant long-life water-lubricated bearing composite material

A water-lubricated bearing and composite material technology, applied in the field of polymer composite materials, can solve the problems of bearing and metal shaft wear, poor anti-friction and wear-resisting performance, and poor sediment tolerance, so as to reduce the friction coefficient and improve the anti-friction resistance. Grinding ability, the effect of low wear rate

Inactive Publication Date: 2016-06-08
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Used in water conditions with high sediment content, these materials have poor sediment tolerance and poor anti-friction and wear resistance, resulting in serious wear of bearings and metal shafts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation process is as follows:

[0031] 1) Weigh the following materials in parts by weight: 100 parts of nitrile rubber, 90 parts of carbon black, 10 parts of graphite, 10 parts of polytetrafluoroethylene, 2 parts of nano silicon dioxide, 2 parts of sulfur, 5 parts of zinc oxide, 1 part of octadecanoic acid, 1 part of N,N-tetramethyldithiobisthiocarbamide;

[0032] 2) Adopt the mechanical mixing process. First, put the nitrile rubber between the rolls of the open mixer or the internal mixer, and mix at 50°C to cover the rolls. Next, add carbon black, graphite, polytetrafluoroethylene, nano-silica, sulfur, zinc oxide, octadecanoic acid, and N,N-tetramethyldithiobisthiocarbamide. Finally, pass the mixed rubber thinly out of the sheet to obtain the rubber compound;

[0033] 3) Put the rubber material into the mold for hot pressing molding, the molding temperature is 170°C, the pressure is 2MPa, and the temperature is kept for 20 minutes.

Embodiment 2

[0035] The preparation process is as follows:

[0036] 1) Weigh the following materials in parts by weight: 100 parts of nitrile rubber, 80 parts of carbon black, 5 parts of graphite, 10 parts of molybdenum disulfide, 30 parts of polyethylene, 10 parts of nano-silica, 2 parts of sulfur, 5 parts of zinc, 1 part of octadecanoic acid, 1 part of N,N-tetramethyldithiobisthiocarbamide;

[0037] 2) Adopt the mechanical mixing process. First, put the nitrile rubber between the rolls of the open mixer or the internal mixer, and mix at 50°C to cover the rolls. Next, add carbon black, graphite, molybdenum disulfide, polyethylene, nano-silica, sulfur, zinc oxide, octadecanoic acid, and N,N-tetramethyldithiobisthiocarbamide. Finally, pass the mixed rubber thinly out of the sheet to obtain the rubber compound;

[0038] 3) Put the rubber material into the mold for hot pressing, the molding temperature is 150°C, the pressure is 5MPa, and the heat preservation and pressure are held for 40 mi...

Embodiment 3

[0040] The preparation process is as follows:

[0041] 1) Weigh the following materials in parts by weight: 100 parts of nitrile rubber, 60 parts of carbon black, 5 parts of molybdenum disulfide, 40 parts of polytetrafluoroethylene, 5 parts of nano-calcium carbonate, 2 parts of sulfur, and 5 parts of zinc oxide , 1 part of octadecanoic acid, 1 part of N,N-tetramethyldithiobisthiocarbamide;

[0042] 2) Adopt the mechanical mixing process. First, put the nitrile rubber between the rolls of the open mixer or the internal mixer, and mix at 50°C to cover the rolls. Next, add carbon black, molybdenum disulfide, polytetrafluoroethylene, nano-calcium carbonate, sulfur, zinc oxide, octadecanoic acid, and N,N-tetramethyldithiobisthiocarbamide. Finally, pass the mixed rubber thinly out of the sheet to obtain the rubber compound;

[0043] 3) Put the rubber material into the mold for hot pressing molding, the molding temperature is 140°C, the pressure is 7MPa, and the heat preservation a...

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Abstract

The invention discloses a silt environment resistant long-life water-lubricated bearing composite material. The composite material is composed of a rubber matrix, a reinforcement body, a solid lubricant, an inorganic nanofiller and an organic polymer filler. The composite material has the characteristics of excellent silt inclusiveness, high mechanical strength, small friction coefficient, low wear rate and the like, and has good silt containing water lubrication performance, through the synergistic effect of the solid lubricant, the inorganic nanofiller and the organic polymer filler, the friction coefficient of a butadiene-acrylonitrile rubber water-lubricated bearing material can be effectively reduced, the antifriction and antiwear ability of the bearing material can be improved, and the service life of the material is prolonged. The material can form seal rings, bearings and other materials for use, especially in the field of pump shafts, marine tail shafts and other water-lubricated bearings under high silt content water quality working conditions.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a long-life water-lubricated bearing composite material resistant to mud and sand environments. Background technique [0002] At present, my country's electromechanical irrigation and drainage capacity has reached more than 70 million kW, ranking first in the world. More than 460,000 pumping station projects have been completed, including more than 5,500 large and medium-sized pumping stations. In recent years, the country has increased investment in water conservancy construction. With the implementation of cross-basin water transfer projects in various places, a large number of large-scale pumping stations will be put into construction, and my country's water conservancy construction will also enter a new stage of development. With the further development of the national economy, more pumping station projects will be put into construction. The reliability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L27/18C08L23/06C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09C08K3/30C08K3/38C08K3/36C08K3/26C08K13/04C08K7/08
Inventor 王廷梅李裕琪王齐华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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