Article
  • Degradation of Perfluoropolyethers/Phosphazene Mixtures as Advanced Lubricants for Computer Hard Disk
  • Park S, Chun S, Perettie DJ, Talk FE, Kang HJ
  • 첨단 컴퓨터 하드디스크 윤활제로 사용되는 Perfluoropolyethers/Phosphazene Mixtures의 분해 특성
  • 박성하, 천상욱, Perettie DJ, Talke FE, 강호종
Abstract
The degradation characteristics of perfluoropolyethers (PFPE) currently being used as computer hard disk lubricant have been investigated. The effects of molecular weight of PFPE and phosphazene additive on the degradation of PFPE were studied. It was found that the degradation of PFPE in the presence of Al2O3 involves two degradation mechansms such as thermal degradation and Lewis acid disproportionation by AIF3 which was formed by oxide-to-halide reaction between Al2O3 and the degraded PFPE. The thermal degradation of PFPE was reduced by increasing the molecular weight of PFPE, wile it did not cause any influence on the Lewis acid degradation of PFPE. Adding phosphazene as an additive of PFPE resulted in the enhancement of thermal properties of PFPE because it prohibited the Lewis acid disproportionation of PFPE.

컴퓨터하드디스크 윤활제로 사용되고 있는 perfluoropolyethers (PFPE)의 분해특성 및 윤활 첨가제로 사용된 포스파젠 화합물의 첨가에 따른 PFPE의 분해특성 변화에 대하여 살펴보았다. 촉매로 사용된 알루미늄 옥사이드의 존재 하에서 PFPE의 부

Keywords: perfluoropolyethers; phosphazene; thermal degradation; Al2O3; Lewis acid disproportionation

References
  • 1. Mee CD, Daniel EDMagnetic Recording Technology, vol. 1, McGraw-Hill, New York (1987)
  •  
  • 2. Moulder JF, Hannond JS, Smith KL, Appl. Surf. Sci., 25, 446 (1986)
  •  
  • 3. Sianesi D, Pasetti A, Fontanelli R, Bernardi GC, Caporiccio G, Chim. Ind., 55, 208 (1973)
  •  
  • 4. Gumprecht WH, ASLE Trans., 9, 24 (1966)
  •  
  • 5. Ohsaka Y, Petrotech, 8, 840 (1985)
  •  
  • 6. Kasai PH, Wheeler P, Appl. Surf. Sci., 52, 91 (1991)
  •  
  • 7. Kasai PH, Tang WT, Wheeler P, Appl. Surf. Sci., 51, 201 (1991)
  •  
  • 8. Carre DJ, ASLE Trans., 29(2), 121 (1985)
  •  
  • 9. Yang M, Talke FE, Perettie DJ, Morgan TA, Kar KK, Dekoven BM, Potter GE, Tribol. Trans., 38, 636 (1995)
  •  
  • 10. Yang M, Talke FE, Perettie DJ, Morgan TA, Kar KK, IEEE Trans. Magn., 30(6), 4143 (1994)
  •  
  • 11. Perettie DJ, Johson WD, Morgan TA, Kar KK, Potter GE, Dekoven BM, Putzig CL, Chao J, Gao YC, Russak M, Adv. Info. Storage System, 7, 157 (1996)
  •  
  • 12. Perettie DJ, Morgan TA, Kar KK, IDEMA Insight, 9(3), 1 (1996)
  •  
  • 13. Mate CM, Kasai PH, Tyndal GW, Lee CH, Raman V, Pocker DJ, Waltman RJIntermag San Francisco 1998, 84 (1998)
  •  
  • 14. Ciampelli F, Venturi MT, Sianesi D, Organic Magnetic Resonance, 1, 281 (1969)
  •  
  • 15. Kang HJ, Zhao Q, Talke FE, Perettie DJ, DeKoven BM, Morgan TA, Bhatia S, Lubrication Eng.in press
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1999; 23(1): 73-80

    Published online Jan 25, 1999