Polyester lubricating oil and process

Abstract

The invention discloses polyester lubricating oil and a blending process thereof. The polyester lubricating oil comprises the following components in percentage by mass: 18-25 percent of PAO4 base oil, 38-44 percent of PAO6 base oil, 12-16 percent of polyol ester base oil, 10-12 percent of a tackifier, 0.2-0.5 percent of a pour point reducer, 0.7-1.2 percent of a friction modifier and 11.30001-12.70003 percent of a complexing agent, wherein the complexing agent comprises 8.0-8.5 mass percent of high-alkali number petroleum calcium sulfonate, 2.0-2.5 mass percent of zinc butyl octyl dithiophosphate, 1.3-1.7 mass percent of zinc dialkyl dithiophosphate and 0.0001-0.0003 percent of methyl silicone oil ester. The polyester lubricating oil disclosed by the invention can meet the performance of the traditional lubricating oil, is high in stability, can achieve the effects of reducing pollution emission and energy consumption and automatically repairing abrasion equipment and has an environment-friendly effect.

Description

technical field [0001] The invention belongs to the field of lubricating oil, in particular to a polymer ester lubricating oil and a blending process thereof. Background technique [0002] Lubricating oil is mainly used in various automobiles and mechanical equipment fields. It can reduce friction and protect machinery and processed parts as a liquid lubricant. Its main functions are lubrication, cooling, rust prevention, cleaning, sealing and buffering. Ordinary lubricating oils are mostly prepared from base oils plus a small amount of additives. The base oil can be divided into the following two categories: one is processed from crude oil, that is, mineral oil extracted from crude oil by distillation or vacuum distillation; the other is synthetic oil produced by chemical synthesis. [0003] At present, in order to make the existing base oil become an engine lubricating oil after adding additives to improve its performance, a balanced method can be applied, that is, when b...

AI Technical Summary

Problems solved by technology

[0004] In the traditional base oil formula, for low-end lubricating oil products, the base oil generally uses type I base oil. This type of base oil has the disadvantage of instability, and it is easy to be oxidized and deteriorate due to the high content of unsaturated hydrocarbons in it. , and the content of sulfur, nitrogen and phosphorus in it is relatively high, and it is easy to be oxidized to produce sulfide and nitride, and the acidic substances are discharged. film or corrosion engine

For medium and high-end oil products, most of the base oils are Group III base oils. The lubricating oil blended with this type of base oil has poor stability. Due to the poor compatibility between this type of base oil and additives, it is easy to cause certain types of additives to precipitation

In addition, regardless of whether it is a group I base oil or a group III base oil, the low-temperature performance is not very outstanding, which also leads to a very large energy consumption when using a lubricating oil blended with this type of base oil in a low-temperature environment, and cannot Self-repairs engine wear and tear

Images