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Process for preparing lubricating oil extreme pressure wear resistant additive

A technology of extreme pressure anti-wear and lubricating oil, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc. It can solve the problems of poor extreme pressure anti-wear, limited application, solid-liquid separation, etc., and achieve excellent extreme pressure and anti-wear effect, good dispersion and stability

Active Publication Date: 2005-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Introduced in CN1218103A the good effect that nanometer rare earth hydroxide has obtained as lubricating oil additive; CN1346873A then introduces the method utilizing friction to form ceramic structure on metal surface; In nano state, it is used as a lubricating oil additive after adding a specific catalyst, but the anti-wear effect is not described in detail
[0003] The nanometer metal oxide or metal hydroxide prepared by the above method is used in lubricating oil. After a certain period of storage, solid-liquid separation will occur, resulting in loss of lubricating effect, and poor extreme pressure and wear resistance, P B Usually only 300 ~ 600N, which limits its application in lubricating oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Dissolve 2.43g of silicon tetrachloride in 35.58g of benzene, add 8.6g of di-n-butylamine under reduced pressure under stirring, and then stir under reduced pressure for 2 hours (heating temperature is 25°C, pressure 0.05MPa) ); 30g of mineral oil (viscosity of 22mm at 40°C 2 / s), 1g sorbitol monolaurate, and 2g monosuccinimide are mixed with the above-mentioned substances, heated and stirred under reduced pressure for 4 hours (heating temperature is 75°C, pressure 0.05MPa); add epoxidized soybean oil 0.5 g, get product A after stirring evenly, join product A in the liquid paraffin with the dosage of 5w%, measure its carrying capacity by GB3142-82 method, the results are shown in Table 1.

example 2

[0021] Dissolve 3.15g of silicon tetrachloride in 38.63g of petroleum ether, add 13.5g of triethylenetetramine under normal pressure under stirring, and then stir under normal pressure for 4 hours (heating temperature is 45°C); Cottonseed oil (viscosity of 25.3mm at 40°C 2 / s), 2g sorbitol monopalmitate, 2g monosuccinimide mixed with the above-mentioned substances, heated and stirred at normal pressure for 5 hours (heating temperature is 150°C), added 1g of amino vinyl ether, and stirred evenly Obtain product B, join product B in the liquid paraffin with the dosage of 5w%, measure its carrying capacity by GB3142-82 method, the results are shown in Table 1.

example 3

[0023] Dissolve 4.23g of silicon tetrachloride in 55.36g of toluene, add 17.83g of n-dodecylamine under normal pressure under stirring, and then stir under normal pressure for 3.5 hours after adding (heating temperature is 30°C); 38.7g rapeseed oil (viscosity of 20.6mm at 40°C 2 / s), 2g polyvinyl chloride ether of sorbitol fatty acid ester, 2g mono-succinimide mixed with the above-mentioned substances, heated and stirred at normal pressure for 5 hours (heating temperature was 101°C), and added 1g of amino vinyl ether , get product C after stirring evenly, join product C in the liquid paraffin with the dosage of 5w%, measure its bearing capacity by GB3142-82 method, the results are shown in Table 1.

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Abstract

The preparation process of lubricating oil extreme pressure wear resistant additive includes the following steps: 1) reaction between silicon tetrachloride and C2-C16 fatty amine in the molar ratio of 1 to 4-10 in the presence of non-polar solvent at 0-100 deg.c and 0.01-0.1 MPa to obtain the intermediate product; and 2) mixing the intermediate product in 100 weight portions with lubricant oil dispersant in 10 weight portions, non-ionic surfactant in 1-10 weight portions and lubricant oil base oil in 20-70 weight portions and reaction at 50-180 deg.c and 0.01-0.1 MPa. The prepared additive has excellent extreme pressure wear resistant effect and excellent dispersivity and stability in lubricant oil.

Description

technical field [0001] The invention relates to a lubricating oil additive, specifically, a preparation method of the lubricating oil extreme pressure anti-wear additive. Background technique [0002] Over the past ten years, the use of nanotechnology to improve the extreme pressure and anti-wear properties of lubricating oils has made significant progress. In terms of varieties, it can be divided into inorganic nano antiwear agents, surface modified organic and inorganic composite antiwear agents, and ashless nano antiwear agents. Inorganic nano antiwear agents generally use various physical and chemical methods to prepare ultrafine particles of metals, metal oxides, metal sulfides, etc., and then disperse them into the base oil as additives. Many metal oxides, such as lithium oxide, zirconium oxide, titanium oxide, and silicon oxide, have high melting points and hardness, and are precursors for preparing ceramics. When used in lubricating oil, they can significantly impro...

Claims

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Application Information

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IPC IPC(8): C10M139/00
Inventor 徐风华韦淡平
Owner CHINA PETROLEUM & CHEM CORP
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