Biodegradable lubricating oil and preparation method thereof

A technology of biodegradation and lubricating oil, which is applied in the direction of lubricating compositions, etc., can solve the problems of poor stability and high cost of biodegradable lubricating oil, and achieve reduced reaction steps, good hydrolytic stability, excellent thermal stability and oxidation stability Effect

Active Publication Date: 2013-02-06
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a biodegradable lubricating oil, which solves the t

Method used

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  • Biodegradable lubricating oil and preparation method thereof
  • Biodegradable lubricating oil and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0036] The present invention further provides a method for preparing the above-mentioned biodegradable lubricating oil, comprising the steps of:

[0037] Step S01, prepare hindered polyol:

[0038] adding a polyol and a long-chain fatty acid with a mass ratio of 0.5:1-2 into an organic solvent, and reacting for 12-36 hours under the condition of a biological enzyme and a temperature of 30-90° C. to obtain a hindered polyol ester;

[0039] Step S02, surface treatment of inorganic nanoparticles:

[0040] Mix and stir the inorganic nanoparticles with the surface treatment agent to carry out surface treatment;

[0041] Step S03, mixing:

[0042] The hindered polyol ester, the surface-treated inorganic nanoparticles, and the diluent are mixed according to the following weight ratios to obtain a biodegradable lubricating oil:

[0043] Hindered polyol ester 89%-95%

[0044] Inorganic nanoparticles after surface treatment 1%-10%

[0045] Thinner 1%-10%

[0046] The biological en...

Example

[0060] Embodiments one to three

[0061] In this example, the hindered polyol ester is prepared by the method of biological enzyme-catalyzed esterification, and the biodegradable lubricating oil components and weight percentages are as follows:

[0062] Pentaerythritol ester: 90%~95%;

[0063] Nano tungsten sulfide (WS 2 ): 1%~5%;

[0064] Thinner: 1%~5%;

[0065] The diluent includes at least: polyester, polyether, etc.

[0066] The preparation process is as follows: first, oleic acid, pentaerythritol, and Novo-435 are added to toluene, respectively, and the reaction is carried out at 70 to 90 degrees Celsius for 24 to 36 hours. After the reaction, Novo-435 is filtered, and then distilled under reduced pressure to collect 0.01 atmospheric pressure. , Components at 160°C. The specific operation process is as follows:

[0067] 1. Weigh 11.58g, 1.36g of pentaerythritol, and 0.3g of Novo-4350.3g in 10ml of toluene, react at 90°C for 24h, filter, and then distill under reduc...

Example

[0070] Embodiments four to six:

[0071] In this example, the hindered polyol ester is prepared by the method of biological enzyme-catalyzed esterification, and the biodegradable lubricating oil components and weight percentages are as follows:

[0072] Pentaerythritol stearate: 90%~95%;

[0073] Nano calcium carbonate (CaCO 3 ): 1%~5%;

[0074] Thinner: 1%~5%;

[0075] The diluent includes at least: polyester, polyether, etc.

[0076] The preparation process is as follows: first, oleic acid, pentaerythritol, and Novo-435 are added to toluene, respectively, and the reaction is carried out at 70 to 90 degrees Celsius for 24 to 36 hours. After the reaction, Novo-435 is filtered, and then distilled under reduced pressure to collect 0.01 atmospheric pressure. , Components at 160°C. The specific operation process is as follows:

[0077] First weigh 11.66g of stearic acid, 1.36g of pentaerythritol, and 0.31g of Novo-435 in 10ml of toluene, react at 90°C for 24h, then filter, a...

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Abstract

The invention is suitable for the field of new materials, and provides a type of biodegradable lubricating oil and a preparation method thereof. The biodegradable lubricating oil comprises hindered polyol ester, inorganic nanoparticles and diluents, wherein the hindered polyol ester is prepared by mainly using a bio-enzyme catalysis method. The lubricating oil, prepared according to the preparation method provided by the invention, has the characteristics of excellent heat stability and oxidization stability, good hydrolytic stability, low temperature fluidity, viscosity-temperature property, lubrication property and biodegradability, and can be applied to the fields of aviation, metal processing, textile and tanning.

Description

technical field [0001] The invention belongs to the field of new materials, in particular to a biodegradable lubricating oil and a preparation method thereof. Background technique [0002] Lubricants are widely used in industrial and agricultural production. In recent years, the total output of lubricating oil in the world has been maintained at 40 million tons. As a major lubricating oil producer, China's production capacity has reached 4.5 million tons by 2001. However, due to the penetration, leakage, spillage and improper handling of lubricating oil during use, it will cause environmental pollution. Most of the components are not biodegradable, and have certain ecotoxicity, polluting the environment. According to statistics, 5 to 10 million tons of petroleum-based chemicals enter the biosphere every year in the world. They seriously pollute land, rivers and lakes, and endanger the ecological environment and ecological balance. [0003] In recent years, with the conti...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M177/00
Inventor 李冬霜杨发达黄昌寿符冬菊吴微微檀满林袁凯杰陈建军岳风树杨建
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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