Journal of South China University of Technology (Natural Science Edition) ›› 2018, Vol. 46 ›› Issue (7): 70-78.doi: 10.3969/j.issn.1000-565X.2018.07.010

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Tribological Properties of Nitrogen-Containing Lubricant Additives

 LIAO Junxu1，2 LU Hao 2 DAI Kangxu2 CAO Hua3 ZHAO Hongbin2 HAN Lifen2 XU Yongjun2 FANG Yutang1   

  1.  1． School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China; 2． School of Chemical Engineering and Energy Technology，Dongguan University of Technology，Dongguan 523808，Guangdong，China; 3． Foshan Delian Automotive Accessories Co. ，Ltd. ，Foshan 528247，Guangdong，China
  • Received:2017-09-30 Revised:2018-01-10 Online:2018-07-25 Published:2018-06-01
  • Contact: 赵鸿斌( 1960-) ，男，教授，博士生导师，主要从事绿色润滑油添加剂的研究 E-mail:zhaohbhanlf@163.com
  • About author:廖俊旭( 1983-) ，男，博士后，工程师，主要从事绿色润滑油添加剂及精细有机化学品的研究
  • Supported by:
    Supported by the China Postdoctoral Science Foundation ( 2017M612656)

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Abstract: Four environment friendly lubricant additives，namely N1，N2，N3 and N4，have been designed， synthesized and characterized． The thermal stability，oil solubility and corrosion resistance of these additives have been systematically studied． Tribological behaviors of the lubricant additives in liquid paraffin ( LP) were investigated． The surfaces morphology and elementary composition of the worn scar was recorded and analyzed by scanning electron microscopy ( SEM) and energy dispersive spectroscopy ( EDS) ． The reaction mechanism was initially discussed． It was found that the synthesized additives showed high thermal stability，excellent oil solubility and strong corrosion resistance． Among the four additives，N2 exhibited the best tribological property． For example， the maximum non-seizure load ( PB ) value of LP with 1. 0wt% N2 was 74% higher than that of LP，the sintered load ( PD) value was twice as large as that of LP． The wear scar diameter ( WSD) of 1. 0% N2 + LP system was 54% lower than that of LP，and the friction coefficient was 28% lower than that of LP． The addition of four additives significantly reduced WSD and surface abrasions of LP． The additive participated in tribo-chemical reaction in the friction process，which effectively improved the extreme pressure，anti-wear and anti-friction performance of LP．

Key words: nitrogen-containing lubricant additives, liquid paraffin, tribological properties, thermal stability, corrosion resistance, oil solubility

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