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Synthesis of the Multifunctional Additive N-acyl Glutamic Acid and Application in Water-Based Lubricating Fluids

[+] Author Affiliations
Haizhen Jiang, Dehua Tao, Bin Wang

Shanghai University, Shanghai, China

Paper No. WTC2005-64205, pp. 667-668; 2 pages
doi:10.1115/WTC2005-64205
From:
  • World Tribology Congress III
  • World Tribology Congress III, Volume 1
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4201-0 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME

abstract

A series of N-acyl glutamic acid were prepared by reaction of glutamic acid with chlorides (1–3 ) or anhydrides (4–8) in good yield, within the solution of pH 8–10, keeping the reaction at 10∼15°C for 2–3 hours. The tribological behaviors of the resulting N-acyl glutamic acid salts with triethanolamine as additives in water were examined on a four-ball machine. The rust-inhibiting properties were evaluated. The elemental composition of the boundary lubricating film was analyzed by means of auger electron spectroscopy (AES). It was found that the N-acyl glutamic acid with long acyl chain functioned to considerably increase anti-wear and friction-reducing abilities of water. The rust-inhibiting properties got better with increase of the length of acyl-chain of N-acyl glutamic acid triethanolamine slats. And the additives had relative good antimicrobial properties in water.

Copyright © 2005 by ASME
Topics: Fluids , Water

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