Oil seal coating agent, spraying method thereof and oil seal prepared therefrom

Abstract

The invention relates to an oil seal coating agent, a spraying method thereof and an oil seal prepared therefrom. The oil seal coating agent is composed of a component A, a component B and a componentC according to a mass proportion of 100:7-8:100, wherein the component A is composed of graphite powder, molybdenum disulfide and polytef, the component B is waterborne curing agent and is composed of homopolymer of polyethylene glycol monomethyl ether terminated 1, 6-diisocyanate hexane and 1, 6-diisocyanyl hexane, and the component C is composed of polyacrylate salt and waterborne epoxy resin.The coating agent is used for being coated in oil seal main lip and dustproof lip areas, and coating thickness is about 30um. When the oil seal works, part of the coating agent is transferred from theoil seal to the surface of a shaft, a coating film is promoted to closely cover the surface of the shaft under action of contact force between an oil seal lip opening and the shaft at the same time to enable the shaft to be smoother so as to play a role in lowering friction coefficient, and low and stable friction force and friction torque are provided in the whole life cycle of the oil seal.

Description

technical field

[0001] The invention relates to an oil seal coating agent, a spraying method of the coating agent and an oil seal prepared therefrom. Background technique

[0002] The current domestic and foreign research on high-performance low-friction and wear oil seals mainly includes: 1. Reduce the holding force of the oil seal to the shaft from the structural design. For example, the Tecon Fanli PDR series of the Swedish Treble Company, the PS-SEAL series of the American Garrek Company, the one-time forming "anti-rotation thread groove" inner lip hydrodynamic oil seal of the EU TDM-SEALS Group, and the German Keluke Company. The pneumatic lubricating surface contact seal ring of Debao Group has been commercialized abroad and used in high-end fields such as aero engines, automobile engines and screw air compressors. However, due to limitations in technology, process and cost, the corresponding products have not yet been mass-produced in China. Second, reduce the fricti...

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