High-temperature valve lubricating oil and processing method thereof

Abstract

The invention provides a high-temperature valve lubricating oil and a processing method thereof. The lubricating oil is prepared from 10 to 15 parts by weight of tricaprylin, 7 to 16 parts by weight of polyisobutene, 7 to 11 parts by weight of polytetrafluoroethylene, 5 to 10 parts by weight of polyisobutylene succinimide, 1 to 3 parts by weight of sodium carboxymethyl cellulose, 3 to 5 parts by weight of acrylic glyceride, 3 to 7 parts by weight of sodium dodecylbenzene sulfonate, 5 to 8 parts by weight of fatty alcohol polyoxyethylene ether carboxylate, 2 to 5 parts by weight of triphenylphosphorothioate, 2 to 7 parts by weight of basic zinc dioctyl primary alkyl dithiophosphate, 4 to 6 parts of para aminobenzoic acid, 6 to 9 parts of octylphenol, 3 to 5 parts of calcium alkyl salicylate and 4 to 8 parts of petroleum ether. All the components are centrifugally stirred to be uniformly mixed according to parts by weight. Under the condition of high temperature, the evaporation loss of the lubricating oil produced by the invention is little, the high-temperature oxidation stability is good, and the influence on sealing media is minimal; high service temperature can reach 360 DEG C or more; and the lubricating property is good.

Description

[0001] Technical field: [0002] The invention relates to a high-temperature valve lubricating oil and a processing method thereof, belonging to the technical field of valve lubrication. [0003] Background technique: [0004] Valve sealing grease is mainly used for sealing and lubricating various gas and liquid medium valves, and also protects the valves to prevent rust and corrosion of the valves. The main performance requirements of valve sealing grease are: tolerance to the medium in contact, good compatibility of sealing materials, good pressure resistance and sealing, good lubricity and protection. [0005] There are three main functions of valve sealing lubricant, one is sealing function, the other is lubrication function, and the third is protection function. [0006] Sealing function: Due to the rheological properties of the valve sealing grease, the valve sealing grease can penetrate and fill the fine space on the static and dynamic joint surface of the valve caused ...

AI Technical Summary

Problems solved by technology

Therefore, the high temperature resistance performance of the lubricating oil is particularly high. The high temperature resistance performance of the existing ordinary lubricating oil can generally reach 240°C, and some high temperature environments, such as electric boilers, often require the valve to work at a high temperature of several hundred degrees. The existing ordinary valve lubricating oil cannot meet the requirements of valves working in high temperature environment