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A Study on Dimethacryloyloxy Alkane Derivatives Having an Anti-wear Performance as Lubricating Oil Additives

윤활유첨가제로써 마모억제 성능을 갖는 Dimethacryloyloxy Alkane 유도체에 관한 연구

  • Han, Hye-Rim (Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology) ;
  • Cho, Jung-Eun (Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology) ;
  • Sim, Dae-Seon (Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology) ;
  • Kang, Chung-Ho (Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology) ;
  • Kim, Young-Wun (Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology) ;
  • Jeong, Noh-Hee (Department of Engineering Chemistry, Chungbuk National University) ;
  • Kang, Ho-Cheol (Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology)
  • 한혜림 (한국화학연구원 바이오화학 연구센터) ;
  • 조정은 (한국화학연구원 바이오화학 연구센터) ;
  • 심대선 (한국화학연구원 바이오화학 연구센터) ;
  • 강충호 (한국화학연구원 바이오화학 연구센터) ;
  • 김영운 (한국화학연구원 바이오화학 연구센터) ;
  • 정노희 (충북대학교 공업화학과) ;
  • 강호철 (한국화학연구원 바이오화학 연구센터)
  • Received : 2016.08.30
  • Accepted : 2016.09.27
  • Published : 2016.12.10

Abstract

Lubricant additives including zinc dialkyldithiophosphate (ZDDP) containing metal have been widely used due to the advantage of very low cost, but they can generate impurities such as ash. In this work, ZDDP containing metals was partially replaced with bis[3-(dialkyloxyphosphorothionyl) thio-2-methylpropanyloxy] butane (BAP4s) which was synthesized conveniently and effectively from alkanediol without any metal components. Also, the wear resistance property of synthesized BAP4s were studied. Wear scar diameter (WSD) values of BAP4s with butyl, octyl, decyl, dodecyl or tetradecyl groups were also measured by four-ball test. As the length of the alkyl group increased from 4 to 8, the WSD value of BAP4s decreased rapidly from 0.59 to 0.45 mm, but from 8 to 14, the value increased very slowly from 0.45 to 0.50 mm. Thus, among all BAP4s, B8P4 having BAP4 with the octyl group, showed the lowest WSD value. Furthermore, the WSD values were measured in a lubricant base oil mixed with a 0.50 percent concentration (w/w) of either BAP4 or ZDDP. The former was 0.55 mm, and the latter was 0.45 mm. The thermal stability and tribofilm formation peroperty were also measured by thermogravimetric analyzer (TGA) and energy-dispersive X-rays spectroscopy (EDS), respectively.

Keywords

bis[3-(dialkyloxyphosphorothionyl)thio-2-methylpropanyloxy] butane;alkanediol derivatives;lubricant additives;anti-wear properties;4-ball test

Acknowledgement

Supported by : 한국산업기술평가관리원

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