Environment-friendly long-life lubricating grease and production process thereof

Abstract

The invention discloses environment-friendly long-life lubricating grease and a production process thereof. The lubricating grease is prepared from, by mass, 50%-85% of base oil, 10%-45% of a thickening agent, 1%-10% of a functional additive and 1%-5% of an additive. The lubricating grease takes base oil and a thickening agent as main components, the thickening agent is formed by modifying and processing bentonite serving as a raw material. The production process comprises the following steps: carrying out organic modification on activated bentonite, uniformly dispersing bentonite into deionized water by polyvinyl alcohol as a dispersing agent, and then adding an emulsifier and methyl methacrylate into the solution so that methyl methacrylate is polymerized on the surface of bentonite anda composite structure of bentonite and polymethyl methacrylate is formed. The pore diameter of the bentonite surface is reduced, the oil absorption and oil retention capacity of the thickening agent is improved, the bonding capacity of the thickening agent and base oil is improved, the oil separation phenomenon is relieved, and meanwhile, the polymethyl methacrylate layer is compounded on the surface, so that the strength of the bentonite thickening agent is improved, and the anti-shearing force effect of the thickening agent is improved.

Description

technical field [0001] The invention belongs to the technical field of lubricants, and in particular relates to an environment-friendly long-life lubricating grease and a production process thereof. Background technique [0002] Friction and wear are unavoidable in the friction pair. The existence of friction causes a lot of energy waste. In order to reduce the energy loss and mechanical loss caused by friction, improve the energy utilization efficiency and the effective service life of the machine, the lubricant in the mechanical structure is used When used in large quantities, the function of the lubricant is to form a layer of lubricating film between the friction surfaces, thereby preventing the friction pair from directly contacting the rough surfaces during relative motion, thereby lubricating and reducing friction. In actual use, due to the influence of external factors such as temperature and pressure, the lubricating film formed by the lubricant cannot maintain stab...

AI Technical Summary

Problems solved by technology

[0006] 1. When the bearing rotates, the grease will be affected by shear force and centrifugal force at the same time, and these two forces depend on the load and speed of the bearing, and the speed of the centrifuge can generally reach thousands or even tens of thousands, so the shear force The influence of force and centrifugal force on grease is more obvious, among which shear force and centrifugal force can promote the separation of base oil from thickener, and when the shear stress is greater than the strength limit of grease, the thickener of grease will form a skeleton If the structure is damaged, the separation between the base oil and the thickener will be further improved, thereby greatly reducing the service life of the grease. In actual production, in order to ensure the service life of the grease, mineral oil and semi-synthetic oil are usually used directly Or full synthetic oil and other lubricating greases with long service life, but the production cost of the latter two is high. Whether the former is produced or discarded, it will cause a lot of pollution to the environment due to its inability to degrade. How to reduce the production cost of lubricating grease and solve the pollution after disposal At the same time, it does not significantly reduce the service life of the grease, which is one of the problems that need to be solved at present.