Preparation method of composite rubber material for water lubricated bearings

Abstract

Belonging to the technical field of bearings, the invention relates to a preparation method of a composite rubber material for water lubricated bearings. The method provided by the invention adopts acrylate rubber as the matrix material for mixing with nitrile butadiene rubber to prepare the composite rubber material for water lubricated bearings. The acrylate rubber is an elastomer formed by copolymerization of an acrylate main monomer, a vulcanization point monomer and a functional monomer, and has good mechanical properties, wear resistance and strong tear resistance. Acrylate rubber has stable chemical properties and good cold resistance, and at the same time has low gas permeability and good oil resistance. Nitrile butadiene rubber has good chemical resistant stability, good processability, fast vulcanization speed and high tensile strength. Therefore, mixing of acrylate rubber with nitrile butadiene rubber to prepare the composite rubber material for water lubricated bearings caneffectively improve the mechanical properties, high temperature resistance and oil resistance of the composite rubber.

Description

technical field [0001] The invention relates to a preparation method of a composite rubber material for water-lubricated bearings, belonging to the technical field of bearings. Background technique [0002] Bearings are widely used supporting parts in machines, and the most widely used bearings are various types of sliding bearings. According to relevant statistics, about 1 / 3 of the world's energy consumption is in different forms of friction, of which the consumption of sliding bearings accounts for about 1 / 10. Therefore, modern rotating machinery requires bearings to have good load capacity, high reliability and long life. Lubrication with low-viscosity fluids such as water or seawater also requires high load-carrying capacity and wear resistance. There are two ways to solve this problem: one is to provide an external high-pressure liquid source, that is, to use a hydrostatic bearing; the other is to use a hydrodynamic bearing. Most of the friction pairs using hydrodyna...

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Problems solved by technology

[0015] The technical problem to be solved by the present invention: the thermal expansion and water absorption of plastic bearings lead to changes in the bearing gap, the high brittleness and low impact resistance of ceramics, and their high sensitivity to solid particles in water limit their applications. Rubber The disadvantages of bearings are poor thermal conductivity, oil resistance, and large starting torque. A preparation method for composite rubber materials for water-lubricated bearings is provided.

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