Preparation method of biodegradable drawing oil

A biodegradable and wire drawing oil technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of environmental pollution, difficult biodegradation, poor oxidation stability, etc., achieve wide application prospects, reduce the content of double bonds, and reduce oxidation stability. improved effect

Inactive Publication Date: 2018-05-18
田秋珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing biodegradable wire drawing oil in view of the defects that the current common wire drawing oil has poor oxidation stability, is not easy to biodegrade, and will pollute the environment.

Method used

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  • Preparation method of biodegradable drawing oil

Examples

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example 1

[0022] Put lard and palm oil in a mass ratio of 1:2 in a four-necked flask equipped with a stirrer, a condenser and a thermometer, and stir for 6 minutes at a temperature of 55°C to obtain a saponified liquid, which is then poured into a four-necked flask Add 5% methanol solution with 3% saponification solution mass fraction and 15% sodium hydroxide solution with 15% saponification solution mass fraction, continue the heat preservation reaction for 45 minutes, leave to separate layers, remove the lower glycerin, and obtain the upper layer liquid, and successively wash the supernatant liquid with a mass fraction of 10% hydrochloric acid solution and deionized water, adjust the pH of the supernatant to neutrality, continue vacuum distillation to obtain mixed oil fatty acid methyl ester, weigh 35g mixed oil fatty acid methyl ester Put the ester in a beaker, stir for 9 minutes at a temperature of 40°C, then add 20g of trimethylolpropane to the beaker, mix and stir for 16min at a pr...

example 2

[0024]Put lard and palm oil in a mass ratio of 1:2 in a four-necked flask equipped with a stirrer, a condenser and a thermometer, and stir for 7 minutes at a temperature of 60°C to obtain a saponified liquid, which is then poured into a four-necked flask Add 5% methanol solution with 3% saponification solution mass fraction and 15% sodium hydroxide solution with 15% saponification solution mass fraction, continue the heat preservation reaction for 50min, leave to separate layers, remove the lower layer of glycerin, and obtain the upper layer solution, and successively wash the supernatant with 10% hydrochloric acid solution and deionized water to adjust the pH of the supernatant to neutral, and continue vacuum distillation to obtain mixed oil fatty acid methyl ester, and take 40g mixed oil fatty acid methyl ester Put the ester in a beaker, stir at 50°C for 10min, then add 22g of trimethylolpropane to the beaker, mix and stir for 18min at a pressure of 0.4MPa, heat up to 85°C, t...

example 3

[0026] Mix lard and palm oil in a mass ratio of 1:2 and place them in a four-necked flask equipped with a stirrer, a condenser and a thermometer, and stir for 8 minutes at a temperature of 65°C to obtain a saponified liquid, which is then poured into the four-necked flask Add 5% methanol solution with a mass fraction of 3% of the saponification solution and 15% sodium hydroxide solution with a mass fraction of 1% of the saponification solution, continue the heat preservation reaction for 60 minutes, leave to separate layers, remove the lower layer of glycerin, and obtain the upper layer solution, and successively wash the supernatant with 10% hydrochloric acid solution and deionized water to adjust the pH of the supernatant to neutrality, continue vacuum distillation to obtain mixed oil fatty acid methyl ester, weigh 45g mixed oil fatty acid methyl ester Put the ester in a beaker, stir at 60°C for 11min, then add 24g of trimethylolpropane to the beaker, mix and stir for 20min a...

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Abstract

The invention discloses a preparation method of biodegradable drawing oil, and belongs to the technical field of drawing oil preparation. According to the preparation method, with catalysis of sodiumhydroxide, lard oil and palm oil are mixed and react with methanol to generate palm oil fatty acid methyl ester; the content of double bonds in the mixed oil is reduced, and the oxidation stability ofthe drawing oil is improved; since the ester synthesized oil has relatively high biodegradability, carbon dioxide and water are generated during biodegradation process, thus the biodegradability of the drawing oil is enhanced; by implementing acetylation modification on the group-OH at the terminal of polylactic acid by use of acetic anhydride and pyridine, the thermal stability or oxidation stability of polylactic acid is improved, and the inside of the drawing oil is effectively filled with the polylactic acid, thereby further improving the biodegradability and oxidation stability of the drawing oil; an anti-foaming agent, an antioxidant, a viscous agent and a stabilizer are added to form a layer of oxidation-stable protective film at high temperature, thereby improving the oxidation stability of the drawing oil and realizing a broad application prospect.

Description

technical field [0001] The invention discloses a preparation method of biodegradable drawing oil, which belongs to the technical field of drawing oil preparation. Background technique [0002] The wire drawing oil is blended with high-performance vulcanized lard and sulfurized fatty acid ester as the main agent. It is used for drawing processing of copper, aluminum, stainless steel and other wire rods. Strain, improve the finish, effectively prolong the life of the mold. [0003] The existing drawing oils are mainly divided into oily drawing oils and water-based drawing oils. These two types of drawing oils have their own advantages and disadvantages in actual use. For example, oily drawing oils have poor heat dissipation performance, difficult cleaning and chip removal, and difficult degradation of waste liquid. Although water-based wire drawing oil has better heat dissipation performance than oil-based wire drawing oil, its lubricating effect is not satisfactory, and it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/10C10N30/08C10N40/24
CPCC10M169/048C10M2207/021C10M2207/026C10M2207/283C10M2209/102C10M2223/045C10M2229/041C10N2030/08C10N2030/10C10N2030/64C10N2040/24
Inventor 尚秋彤杨亚生陈可
Owner 田秋珍
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