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Lubricating oil additive and preparation method

A technology for lubricating oil additives and base oils, which is applied in additives, lubricating compositions, petroleum industry, etc., and can solve problems such as unexplained effects of lubricating additives, and application of commercial-grade nano-silica particles.

Active Publication Date: 2007-02-21
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 1183461A provides a sulfur-containing organic compound modified metal dichalcogen compound nanoparticle and its synthesis method, which can be used as a lubricating oil additive, but does not explain its effect as a lubricating additive; CN 1180079A, CN 1354056A disclose Nano powders modified with metal oxides or hydroxides, and metal copper nanoparticles modified with thiophosphorus organic compounds are used in the field of lubrication, but there is no application of commercial grade nano-silica particles as lubricating oil additives in the field of lubrication

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 2.5 grams of nano-silica (particle size 20 nanometers), 5 grams of polyisobutylene succinimide, and 5 grams of polyisobutylene into 35.5 grams of base oil (40 ° C kinematic viscosity 32.83 mm 2 / sec), heated to 70°C and stirred for 1 hour, then added 2.0 grams of acidic dibutyl phosphite, and at 60°C, with a rotating speed of 800 rpm, vigorously stirred for 4 hours to obtain a lubricating oil additive.

Embodiment 2

[0022] Add 0.5 gram of nano-silica (5 nanometers in particle size), 2 gram of sorbitan monooleate and 4 gram of methyl acrylate to 47.5 gram of base oil (40 ℃ kinematic viscosity 93.88 mm 2 / sec), heated to 60°C and stirred for 2 hours, then added 3 grams of tricresyl phosphate, and stirred vigorously for 2 hours at a speed of 1000 rpm to obtain a lubricating oil additive.

Embodiment 3

[0024] Add 10.0 grams of nano-silica (particle size 50 nanometers), 5.0 grams of carbon dodecanoyl alcohol polyglycol ether, and 10.0 grams of sorbitan monooleate to 20 grams of base oil (40 ° C kinematic viscosity 99.42 mm 2 / sec), heated to 50°C, stirred at constant temperature for 1 hour, then added 5.0 grams of oil-soluble potassium borate, and stirred vigorously for 4 hours at 50°C with a rotating speed of 400 rpm to obtain a lubricating oil additive.

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PUM

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Abstract

An extreme-pressure antiwear additive for lubricating oil is prepared from basic oil, SiO2 nanoparticles, disperser and synergist.

Description

technical field [0001] The invention relates to a lubricating oil additive and a preparation method thereof. Background technique [0002] Traditional lubricating oil anti-wear and extreme pressure additives mostly use compounds containing active elements such as sulfur, phosphorus and chlorine. Although they all have excellent anti-wear and extreme pressure properties, the mechanism of action of these elements is at the cost of reasonable corrosion , and excessive use will also cause environmental pollution and affect the health of workers. Some people also try to evenly disperse some solid particles with layered or scaled structure (such as graphite, molybdenum disulfide, polytetrafluoroethylene, etc.) and some soft metals such as lead, copper, borate, etc. in the lubricating oil , in order to obtain a good lubricating effect, but there are problems such as poor dispersion stability and easy precipitation. Nanomaterials refer to solid material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/26C10M137/04C10M137/10
Inventor 涂劲松李谨周建严丽珍宓建伟
Owner CHINA PETROLEUM & CHEM CORP
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