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Synthesis and Thermal Stability of Polyol Esters

폴리올 에스테르의 합성 및 열 안정성

  • Chung, Keun-Wo (Applied Chemistry & Engineering Division, Korea Research Institute of Chemical Technology) ;
  • Baek, Jin-Wook (Applied Chemistry & Engineering Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Young-Wun (Applied Chemistry & Engineering Division, Korea Research Institute of Chemical Technology) ;
  • Seo, In-Ok (Applied Chemistry & Engineering Division, Korea Research Institute of Chemical Technology) ;
  • Han, Jeong-Sik (Agency for Defence Development)
  • 정근우 (한국화학연구원 응용화학연구부) ;
  • 백진욱 (한국화학연구원 응용화학연구부) ;
  • 김영운 (한국화학연구원 응용화학연구부) ;
  • 서인옥 (한국화학연구원 응용화학연구부) ;
  • 한정식 (국방과학연구소)
  • Published : 2002.10.01

Abstract

Polyol esters were synthesized by condensation reaction of polyols (PE and DiPE) and linear acids such as valeric acid, caproic acid, heptylic acid and caprylic acid. The structures of polyol esters were confirmed by gas chromatography. Hot tube test was used test was used to measure thermal stability of polyol esters and its thermal properties depended on the structure of acid moiety contained in polyol esters.

Keywords

References

  1. Bakunin V. N. and Parenago 0. P., 'A Mechanism ofTermo-Oxidative Degradation of Polyol Ester Lubri-cants,' J. Syn. Lub., Vol. 9 (2), pp. 127, 1992
  2. Maier K. J., 'Aircraft Engine Oils and ThermalBehaviour at High temperature,' Synth. Lub., vol. 3(3), pp. 163, 1986
  3. Hiroyuki F., Ken-ichi S. and Masanori I., 'NovelRefrigeration Lubricants for Use with HFC Refriger-ants,' Tribology International, vol. 33, pp. 707, 2000
  4. Krevalis Jr MA. Schlosberg R. H. and Duncan C. B.,'Refrigeration Working Fluid Composition Contain-ing Difluoroethane or Pentafluoroethane and A Poly-olester Lubricant,' US Patent No. 5494597, 1996
  5. Bowman W. F. and Stachowiak G. W., 'New Criteriato Acess the Remaining Useful Life of Industrial Tur-bine Oils,' Lubr. Eng., vol. 52 (10), pp. 745, 1998
  6. Zhang Y., Pei P., Perez J. M. and Hsu S. M., 'ANew Method to Evaluate Deposit Forming Ten-dency of Liquid Lubricants by Differential ScanningCalorimetry,' Lubr. Eng., vol. 48 (3), pp. 189, 1992
  7. Bartl P. and Volkl Chr., 'Thermo-Oxidative Stabilityof High Temperature Stability Polyol Ester JetEngine Oils-A Comparison of Test Methods,' Syn.Lub., vol. 3 (3), pp. 163, 1999
  8. Li H. and Hsu S. M., 'Thermal-Oxidative Character-istics of Some High Temperature Diesel Lubri-cants,' Synth. Lubr., vol. 13, pp. 129, 1996
  9. Perez. J. M., 'Oxidative Properties of Lubricantsusing Thermal Analysis,' Thermochim. Acta, vol.357, pp. 47, 2000