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Alkyl phosphate modified graphene oxide as friction and wear reduction additives in oil

  • Lei Zhang
  • Yi He
  • Lin Zhu
  • Zhilin Jiao
  • Weizhou Deng
  • Caiping Pu
  • Chunmei Han
  • Shan Tang
Chemical routes to materials
  • 11 Downloads

Abstract

Alkyl phosphate modified graphene oxide (GON-DDP) was successfully synthesized using dodecanol, ethanol amine and self-made graphene oxide (GO) as precursors. The structure and morphology of GON-DDP were characterized by FT-IR, XPS, TG/DSC, SEM and TEM. The characterization results indicate that long alkyl phosphate chains were successfully grafted on GO surface, which guaranteed the dispersibility of GON-DDP in hydroisomerization dewax base oil (VHVI8). Then the tribology properties of GON-DDP as friction reduction and anti-wear additive in VHVI8 were evaluated on four-ball machine and SRV test system. The results show that the friction coefficient and wear scar diameter were reduced by 22.7% and 30.3% compared with bare VHVI8 base oil. Moreover, the non-seizure load of VHVI8 was significantly raised by adding GON-DDP. Finally, the lubrication mechanism was proposed according to Raman analysis on the worn surfaces of steel balls.

Notes

Acknowledgements

This work was financially supported by National Natural Science Foundation of China (51774245) and Sichuan Province Applied Basic Research Project (2018JY0302).

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Chemistry and Chemical EngineeringSouthwest Petroleum UniversityChengduPeople’s Republic of China
  2. 2.Civil Aviation Flight University of ChinaDeyangPeople’s Republic of China
  3. 3.Chengdu Evermaterials Co., LtdChengduPeople’s Republic of China
  4. 4.PetroChina Chengdu Lubricant CompanyChengduPeople’s Republic of China

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