A kind of biodegradable environmental protection lubricating oil

Abstract

The invention discloses biodegradable environment-friendly lubricating oil. The biodegradable environment-friendly lubricating oil is prepared from the following raw materials in parts by weight: 30 to 40 parts of 2,5-furandicarboxylicacid starch ester, 1 to 3 parts of ethylene-vinyl acetate-carbon monoxide copolymer, 40 to 50 parts of plant oil, 1 to 3 parts of anti-wear reagent at extreme pressure, 0.1 to 0.5 part of anti-rust agent and 0.1 to 0.5 part of antioxidant. A preparation method of the 2,5-furandicarboxylicacid starch ester comprises the following steps: dissolving 2,5-furandicarboxylicacid in tetrahydrofuran; then, adding starch, carbodiimide and 4-dimethylamino pyridine; stirring in a ice-water bath for 2 to 3 hours; backflowing while stirring at the temperature of 40 to 50 DEG C for 18 to 24 hours; filtering, diluting with an organic solvent, washing with water for 3 to 5 times, washing with saturated table salt solution for 4 to 6 times, absorbing water with anhydrous magnesium sulfate, and filtering; performing rotary evaporation at the temperature of 50 to 60 DEG C to remove the solvent. The biodegradable environment-friendly lubricating oil disclosed by the invention is biodegradable, is environmentally friendly, and has the advantages of high thermal stability, high low-temperature performance, high oxidizing stability, lower viscosity index and higher universality.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to a biodegradable and environment-friendly lubricating oil. Background technique [0002] Lubricating oil is widely used in aviation, automobile, mechanical processing, transportation, metallurgy, coal, construction, light industry and other industries. It can reduce friction and wear, save energy and prolong the life of machinery. However, when it is used in large quantities, it will inevitably enter the environment through various channels such as transportation, leakage, splashing, spillage or improper discharge, seriously polluting soil, land, rivers and lakes, affecting or even destroying ecology. Environment and ecological balance. Under this background, countries all over the world are researching biodegradable environmental protection lubricating oil, which can not only meet the lubrication requirements of mechanical parts, but also cause no harm to the environment...

AI Technical Summary

Problems solved by technology

However, vegetable oil has poor oxidation stability, low viscosity index, and poor low-temperature performance, so its versatility is poor, which has become the main obstacle restricting its development.

[0004] As an improvement, Chinese Patent Publication No. CN 102041148A discloses a synthetic gear oil for wind power generation. The method uses 95-98% dibasic acid pentaerythritol C5-C18 complex ester to synthesize base oil, and 5-2% industrial gear oil to compound Additives and an appropriate amount of anti-foaming agent are used to prepare wind power generation gear oil. The wind power generation gear oil prepared by this method can improve the service life of wind power generation gear oil, improve the compatibility between gear oil and sealing materials, be biodegradable, and be safe to use. , environmental protection features, but the viscosity is low, the application field is small

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