Lubricating oil composite type antifoaming agent and application thereof

A technology of anti-foaming agent and lubricating oil, which is applied in the field of compound anti-foaming agent and its preparation, can solve the problems such as high-temperature anti-foaming can not be effectively solved, achieve improved dispersion effect, good high-temperature anti-foaming performance, and improve high-temperature anti-foaming performance effect

Active Publication Date: 2014-12-24
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, some high-grade lubricating oils have requirements for high-temperature anti-foaming properties, such as high-grade internal combustion engine oils, automatic transmission oils, etc. Currently, the commonly used anti-foaming agents or compound anti-foaming agents for lubricating oils cannot effectively solve the problem of such oils. High temperature anti-foaming problem

Method used

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  • Lubricating oil composite type antifoaming agent and application thereof
  • Lubricating oil composite type antifoaming agent and application thereof
  • Lubricating oil composite type antifoaming agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Fluorine-containing silicone oil antifoaming agent (FF160), acrylate copolymer antifoaming agent (T912), amyl ketone, and solvent oil for the paint industry (qualified product No. 200 solvent oil) according to 1%, 5%, 15%, 79 % of the mixture, at 40°C, mechanically stirred evenly, made into composite antifoam agent 1, and then added to internal combustion engine oil SL5W-30 according to the required amount, and compared with the use of a single antifoam agent, the oil The test results of high temperature foam properties are shown in Table 1.

[0028] Table 1 High temperature foam properties of composite antifoam agent 1

[0029]

[0030] It can be seen from Table 1 that in the three cases of adding no antifoaming agent to SL5W-30, adding a single antifoaming agent (T912 and FF160) and adding composite antifoaming agent 1, the SL5W-30 with composite antifoaming agent 1 The oil has the smallest static foam volume and the best high-temperature foam characteristics (150...

Embodiment 2

[0032] Mix fluorine-containing silicone oil (FS1265), silicone oil-type antifoaming agent (T901), pentanone, and aviation kerosene (3# aviation kerosene) according to the ratio of 1%, 1%, 20%, and 78%, and stir at 50°C Evenly, compound antifoam agent 2, and then add it to internal combustion engine oil SM5W-30 according to the required amount, and compare with a single antifoam agent, the test results of the high temperature foam characteristics of the oil are shown in Table 2.

[0033] Table 2 High temperature foam characteristics of composite antifoam agent 2

[0034]

[0035] It can be seen from Table 2 that in SM5W-30 without adding antifoaming agent, adding a single antifoaming agent (T901 and FS1265) and adding composite antifoaming agent 2, SM5W-30 with composite antifoaming agent 2 The oil has the smallest static foam volume and the best high-temperature foam characteristics (150°C), which can meet the requirements of SM5W-30. It shows that the high-temperature ant...

Embodiment 3

[0037] Fluorine-containing silicone oil (FF160), acrylate copolymer antifoaming agent (T912), amyl ketone, and solvent oil for the paint industry (qualified product No. 200 solvent oil) are used in proportions of 2%, 8%, 25%, and 65%. Mixed, at a temperature of 30°C, mechanically or manually stirred to make a compound antifoaming agent 3, and then added to internal combustion engine oil SM5W-30 according to the required amount, and compared with using an antifoaming agent alone, the oil product The test results of high temperature foam properties are shown in Table 3.

[0038] Table 3. High temperature foam characteristics of composite antifoam agent 3

[0039]

[0040] It can be seen from Table 3 that in SM5W-30 without adding antifoaming agent, adding a single antifoaming agent (T912 and FF160) and adding composite antifoaming agent 3, SM5W-30 adding composite antifoaming agent 3 The oil has the smallest static foam volume and the best high-temperature foam characteristi...

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Abstract

The invention provides a lubricating oil composite type antifoaming agent. With composite of two or more antifoaming agents comprising silicone oil, fluorine-containing silicone oil and an acrylate copolymer and with cooperative use of two or more solvents comprising paint industry solvent oil, aviation kerosene and pentanone, the antifoaming agent is used in lubricating oil products, and improves the high-temperature antifoaming property of the oil products.

Description

technical field [0001] The invention relates to a lubricating oil additive, in particular to a compound antifoaming agent for lubricating oil, its preparation method and application. Background technique [0002] Vigorously stirring the oil in the presence of air will produce many small bubbles, which will float up to the oil surface and form foam. Excessive foam will affect the lubricating performance of the lubricating oil. For the improvement of lubricating oil foam performance, in addition to using good base oil, adding antifoaming agent to lubricating oil is still the main means at home and abroad. Regarding the mechanism of action of the antifoaming agent, it is generally believed that the antifoaming agent with low surface tension enters the part of the bubble film, destroys the mechanical balance of the oriented bubble film, causes the foam to burst or inhibits foaming, and reduces the foaming tendency of the lubricating oil. Destroy the stability of the bubble. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M155/02C10N30/18C10N30/08
Inventor 徐魏水琳章晶张国茹周轶宋朝新薛玉苓安岸斐陈琳赵海鹏
Owner CHINA PETROLEUM & CHEM CORP
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