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In situ friction polymer , and preparation method

A polymer and in-situ technology, applied in lubricating compositions, petroleum industry, etc., can solve the problems of no literature reports and negative impact on base oil performance, and achieve the effects of no long-term toxic and side effects, little impact on performance, and easy preparation

Inactive Publication Date: 2009-06-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content disclosed in the above-mentioned patents focuses on the study of the friction polymerization of condensation products and its effect on friction reduction. As an additive to base oil, monomers such as dimer acid that have not participated in the reaction will have a negative impact on the performance of the base oil.
[0004] But similar to the method that the present invention adopts acrylic acid ester monomer polymerization, there is no bibliography at present at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Control the temperature of the oil cup at 20°C, add 150ml of base oil, add 1.2g of butyl acrylate, and rub for 30min under a load of 10N and a rotational speed of 195rpm. Then the friction disc was ultrasonically cleaned in acetone solution for 1 h, and then vacuum-dried at 20 °C for 12 h. The width of the slip marks on the surface of the friction disc was measured to be 0.48mm.

Embodiment 2

[0018] Control the temperature of the oil cup at 30°C, add 150ml of base oil, add 6.0g of ethyl acrylate, and rub for 60min under a load of 30N at a speed of 400rpm. Then the friction disc was ultrasonically cleaned in acetone solution for 1 h, and then vacuum-dried at 20 °C for 12 h. The width of the slip marks on the surface of the friction disc was measured to be 0.63 mm.

Embodiment 3

[0020] Control the temperature of the oil cup at 50°C, add 150ml of base oil, add 12.0g of butyl methacrylate, and rub for 120min under a load of 60N at a speed of 585rpm. Then the friction disc was ultrasonically cleaned in acetone solution for 1 h, and then vacuum-dried at 20° C. for 12 h. The width of the slip marks on the surface of the friction disc was measured to be 0.60 mm.

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PUM

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Abstract

This invention discloses a method for preparing in situ friction polymer, which comprises: polymer of acrylate monomer 1.0-10.0 wt. %, and base oil 90.0-99.0 wt. %. The method comprises: adding acrylate monomer into base oil, performing interfacial friction to initiate polymerization of acrylate monomer on the friction surface and obtain a protective film. The friction conditions are: loading is 10-100 N, temperature is 20-50 deg.C, rotational speed is 195-585 rpm, and time is above 30 min. The in situ friction polymer has such advantages as simple process, good compatibility with friction medium, and few influences on oil quality. The in situ friction polymer has friction-reducing and coagulation-decreasing functions, and can improve oil quality.

Description

technical field [0001] The invention relates to an in-situ friction polymer and a preparation method thereof, belonging to the field of friction polymerization research. Background technique [0002] Friction polymerization refers to the process in which monomers are polymerized and converted into polymers when they are rubbed on the surface of a material. The resulting polymer forms a thin film on the surface of the material that reduces wear. The friction surfaces can be metal-to-metal, ceramic-to-ceramic. The phenomenon is: when the polar monomer is added to the lubricating oil, the polar monomer will be enriched on the friction surface as the friction process progresses, originally to form a friction polymer film. [0003] American tribology expert Michael J. Furey reported in 1973 the protective effect of polymer films on friction surfaces. In 1990, Furey had a new understanding of the significance of friction polymerization, and for the first time mentioned friction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M145/14C10N30/06
Inventor 励杭泉郑军峰张连凯杜中杰张晨
Owner BEIJING UNIV OF CHEM TECH
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