Adhesive solid lubricating coating and preparation method thereof as well as self-lubricating joint bearing and preparation method thereof

Abstract

The invention discloses an adhesive solid lubricating coating and a preparation method thereof as well as a self-lubricating joint bearing and a preparation method thereof, and belongs to the technical field of solid lubricants. The coating consists of epoxy resin, a curing agent, polytetrafluoroethylene, molybdenum disulfide and a fluorocarbon surfactant by compounding, wherein the adopted fluorocarbon surfactant is a non-ionic surfactant, has excellent wetting property and leveling property, and can efficiently reduce the surface tension of the coating to greatly improve the cohesive property of the coating; and the epoxy resin with excellent adhesive strength and mechanical strength is adopted as a bonding agent to ensure that mixed powder of molybdenum disulfide and polytetrafluoroethylene is firmly adhered to a friction surface to form a solid lubricating coating layer which has good wear resistance, corrosion resistance, self-lubricating property and high temperature resistance. The self-lubricating joint bearing prepared by the method disclosed by the invention is relatively low in friction coefficient, wearing capacity and friction temperature, so that the tribological property of the joint bearing is greatly improved. The preparation methods disclosed by the invention are simple to operate, low in cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of solid lubricants, and in particular relates to a bonded solid lubricant paint, a preparation method, a self-lubricating joint bearing, and a preparation method. Background technique [0002] With the development of science and technology, many harsh working conditions have exceeded the use limit of lubricating oil or grease, which is difficult to meet with traditional lubrication methods, and solid lubrication can solve this problem well. Therefore, solid lubricating coatings have become a research hotspot in recent years. . [0003] Solid lubrication means that some solid lubricants exist in the form of powder or film and have good friction and wear resistance properties. Commonly used solid lubricant materials include molybdenum disulfide, graphite, polytetrafluoroethylene and other materials with good lubricating properties. Bonded solid lubricating coating is one of the main types of solid lubricatin...

AI Technical Summary

Problems solved by technology

In the prior art, the patent CN103725069A discloses a solid self-lubricating coating containing polytetrafluoroethylene and its preparation method. Although the coating has a certain anti-friction effect, the wear resistance is not mentioned, and the This method takes a long time to prepare the coating and the curing process is complicated; patent CN103628058A discloses a method for preparing a high wear resistance metal-based self-lubricating PTFE coating, which is crosslinked by melting the polytetrafluoroethylene coating , forming a three-dimensional network result, improving the wear resistance of the coating, but the preparation process is complicated, the technical requirements are high, and it does not involve improving the bonding performance of the coating and the substrate

In addition, none of the anti-friction and wear-resistant coatings based on polytetrafluoroethylene disclosed in the prior art has been applied to joint bearings.