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Water-lubricated bearing composite material and preparation method thereof

A technology of water-lubricated bearings and composite materials, which is applied in the field of composite materials and can solve problems such as poor wear resistance

Inactive Publication Date: 2021-08-06
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

The NBR composite material used for water-lubricated bearings in the prior art has the problem of poor wear resistance

Method used

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  • Water-lubricated bearing composite material and preparation method thereof
  • Water-lubricated bearing composite material and preparation method thereof
  • Water-lubricated bearing composite material and preparation method thereof

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preparation example Construction

[0023] The invention provides a method for preparing a water-lubricated bearing composite material, comprising the following steps:

[0024] Mix toluene diisocyanate (TDI) and polytetramethylene glycol for addition reaction to obtain PU prepolymer;

[0025] Mixing the PU prepolymer, epoxy resin and a first organic solvent to obtain a first compound;

[0026] The nitrile rubber is mixed with the second organic solvent to obtain the nitrile rubber solution;

[0027] The first mixture, nitrile rubber solution, additives, vulcanization aids, anti-aging agent D, vulcanizing agent and curing agent are mixed and dried to obtain a premix;

[0028] The premixed material is sequentially kneaded, vulcanized and solidified to obtain the water-lubricated bearing composite material.

[0029] The invention mixes toluene diisocyanate (TDI) and polytetramethylene glycol for addition reaction to obtain PU prepolymer.

[0030] In the present invention, the polytetramethylene glycol is prefera...

Embodiment 1

[0064] Cut 30g of NBR raw rubber into small pieces and dissolve in 300g of THF, and stir vigorously; at the same time, dissolve 12g of PU prepolymer and 6g of E51 in 180g of chloroform, and after the NBR raw rubber is completely dissolved, Pour the chloroform mixed solution of PU prepolymer and E51 into the above-mentioned NBR solution, stir vigorously for 24h, mix carbon black (consumption is 60wt% of nitrile rubber), stearic acid (consumption is 1wt% of nitrile rubber) ), zinc oxide (consumption is 3wt% of nitrile rubber), vulcanization accelerator TMTD (consumption is 0.7wt% of nitrile rubber), vulcanization accelerator MBT (consumption is 0.53wt% of nitrile rubber), vulcanization accelerator CTP (consumption is 0.53wt% of nitrile rubber), vulcanization accelerator CZ (consumption is 0.2wt% of nitrile rubber), antioxidant D (consumption is 1wt% of nitrile rubber), sulfur (consumption is nitrile rubber 2wt%), curing agent MOCA (the amount is 15.37wt% of the total amount of P...

Embodiment 2

[0066] Cut 30g of NBR raw rubber into small pieces and dissolve it in 300g of THF, and stir vigorously; at the same time, dissolve 12g of PU prepolymer and 9g of E51 in 180g of chloroform, and after the NBR raw rubber is completely dissolved, Pour the chloroform mixed solution of PU prepolymer and E51 into the above-mentioned NBR solution, stir vigorously for 24h, mix carbon black (consumption is 60wt% of nitrile rubber), stearic acid (consumption is 1wt% of nitrile rubber) ), zinc oxide (consumption is 3wt% of nitrile rubber), vulcanization accelerator TMTD (consumption is 0.7wt% of nitrile rubber), vulcanization accelerator MBT (consumption is 0.53wt% of nitrile rubber), vulcanization accelerator CTP (consumption is 0.53wt% of nitrile rubber), vulcanization accelerator CZ (consumption is 0.2wt% of nitrile rubber), antioxidant D (consumption is 1wt% of nitrile rubber), sulfur (consumption is nitrile rubber 2wt%), curing agent MOCA (the amount is 18.04wt% of the total amount o...

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Abstract

The invention provides a water-lubricated bearing composite material and a preparation method thereof, belonging to the technical field of composite materials. The water-lubricated bearing composite material comprises the following steps: mixing toluene diisocynate and polybutylene glycol, and carrying out an addition reaction to obtain a PU prepolymer; mixing the PU prepolymer, epoxy resin and a first organic solvent to obtain a first mixture; mixing nitrile rubber with a second organic solvent to obtain a nitrile rubber solution; mixing the first mixture, a nitrile rubber solution, an additive, a vulcanizing aid, an anti-aging agent D, a vulcanizing agent and a curing agent, and conducting drying to obtain a premix; and sequentially subjecting the premix to mixing, vulcanization and curing forming so as to obtain the water-lubricated bearing composite material. According to the invention, PU and EP are introduced into the NBR material at the same time for the first time; the introduction of PU can enhance the elasticity and damping shock absorption performance of the material and reduce the influence and loss caused by friction vibration; and the introduction of EP can greatly improve the antifriction wear resistance of the material.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a water-lubricated bearing composite material and a preparation method thereof. Background technique [0002] NBR (Nitrile Butadiene Rubber) composites are widely used in aircraft, automobiles, railway equipment, aerospace equipment, and defense industries because of their ease of manufacture, low cost, and excellent mechanical properties. With the development of modern industrialization, various water-lubricated stern bearings such as ultra-high molecular weight polyethylene materials and ceramic materials have emerged, and the application of nitrile rubber in water-lubricated stern bearings has put forward higher requirements for its performance. The NBR composite material used for water-lubricated bearings in the prior art has the problem of poor wear resistance. Contents of the invention [0003] In view of this, the object of the present invention is to provid...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L75/08C08L63/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06
CPCC08L9/02C08L2205/03C08L2205/04C08K2003/2296C08L75/08C08L63/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06
Inventor 王廷梅曲春辉陈守兵王齐华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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