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Multi-functional microgel intelligent lubricant and preparation method thereof

A microgel and lubricant technology, applied in coating, tissue regeneration and other directions, can solve the problems of unclear correlation, reduce heavy metal ions in lubricating fluid, etc., and achieve the effects of low preparation cost, good dispersibility, and uniform particle size distribution.

Active Publication Date: 2022-01-04
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although microgels have been reported for temperature-sensitive lubrication, the relationship between the chemical composition and structure of microgels and their tribological properties is still unclear, especially in the complex environment of artificial joint friction and lubrication. The gel will be affected by many factors such as pH and temperature at the same time. How to use it to control the insufficient anti-friction lubricity of artificial joint materials due to frictional heating and pH fluctuations, and at the same time reduce the heavy metal ions in the lubricating fluid has not yet been seen. to report

Method used

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  • Multi-functional microgel intelligent lubricant and preparation method thereof
  • Multi-functional microgel intelligent lubricant and preparation method thereof
  • Multi-functional microgel intelligent lubricant and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0019] Add 0.95 parts of N-isopropylacrylamide, 0.2 parts of acrylic acid, 0.025 parts of sodium lauryl sulfate, 0.486 parts of oleic acid, 0.06 parts of N,N'-methylenebisacrylamide, 0.513 parts of triethanolamine, and add them in sequence In 60 parts of deionized water, nitrogen gas was continuously introduced during the reaction to remove oxygen in the reaction solution, magnetically stirred for 40 min, and reacted in a water bath at 55°C for 3 h, and then 5 parts of 0.039 mol L -1 The ammonium persulfate solution was added to the mixed solution, and finally reacted in a water bath at 60°C for 4.5 hours. The solution after the above reaction was collected and dialyzed in deionized water for 5 days. During the process, magnetic stirring was continued to speed up the dialysis speed, and it was replaced every 12 hours. Deionized water once, that is.

Embodiment 2

[0021] Add 1.8 parts of N-isopropylacrylamide, 2.0 parts of acrylic acid, 0.08 parts of sodium lauryl sulfate, 0.486 parts of oleic acid, 0.1 parts of N,N'-methylenebisacrylamide, 0.513 parts of triethanolamine, and add them in sequence 80 parts of deionized water, during the reaction, nitrogen gas was continuously introduced to remove the oxygen in the reaction solution, magnetically stirred for 50 minutes, first reacted in a water bath at 60°C for 3.5 hours, and then 5 parts of 0.078mol L -1 The APS solution was added to the mixed solution, and finally reacted in a water bath at 70°C for 5 hours. The solution after the above reaction was collected and dialyzed in deionized water for 8 days. During the process, magnetic stirring was continued to speed up the dialysis speed, and the deionized water was replaced every 12 hours. Water, that is.

[0022] In order to test the anti-friction lubrication and ion adsorption effects of the present invention, the microgel in the embodim...

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Abstract

The invention discloses a multi-functional microgel intelligent lubricant and a preparation method thereof. Various monomers, a cross-linking agent, a surfactant precursor and the like are dispersed in a water solution by water-phase solution polymerization, a surfactant is prepared in situ, and then the intelligent lubricant is generated through reaction under the action of an initiator. The method is simple and effective. The prepared microgel lubricant can achieve lubrication response based on temperature and pH, improve the anti-friction and lubrication performances of a friction pair material, and adsorb heavy metal ions generated by friction of a typical metal friction pair, and has wide application prospects in the field of intelligent lubrication.

Description

technical field [0001] The invention belongs to the field of mechanical tribology. Specifically, by preparing a multifunctional microgel as a lubricant, relying on the response of the microgel to temperature and pH during the friction process, intelligent lubrication is realized, and at the same time, it is effectively adsorbed and reduced in the solution. content of heavy metal ions. Background technique [0002] The friction pair of artificial joints has served in the human body for a long time. It needs to withstand millions of cycles of body weight load and impact every year, and faces severe friction and wear conditions. Therefore, how to reduce the friction and wear of artificial joint materials has become a research hotspot. In addition to the conventional anti-friction lubrication effect of artificial joints, the frictional temperature rise caused by long-term exercise can induce insufficient lubrication and cause vicious wear; in addition, the pH fluctuation of the ...

Claims

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Application Information

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IPC IPC(8): C08F220/54C08F220/06C08F222/38A61L27/28
CPCC08F220/54A61L27/28A61L2430/24C08F220/06C08F222/385
Inventor 徐玉福钱宗鑫胡苑华姚路路
Owner HEFEI UNIV OF TECH