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Thermal Stability of Modified Perfluoropolyether Lubricants for Application in Heat Assisted Magnetic Recording

[+] Author Affiliations
Jumin Rhew, Hogap Kim, Ho-Jong Kang

Dankook University, Yongin, Gyeonggi, Republic of Korea

Hao Zheng, Frank E. Talke

University of California, San Diego, La Jolla, CA

Paper No. IJTC2011-61044, pp. 315-316; 2 pages
doi:10.1115/IJTC2011-61044
From:
  • ASME/STLE 2011 International Joint Tribology Conference
  • ASME/STLE 2011 Joint Tribology Conference
  • Los Angeles, California, USA, Oct 24–26, 2011
  • ISBN: 978-0-7918-5474-7
  • Copyright © 2011 by ASME

abstract

Perfluoropolyether (PFPE) lubricants were chemically modified to maximize their thermal stability for application in heat assisted magnetic recording (HAMR). Benzophenone (BP) was introduced to react with the hydroxyl end group in PFPE to act as a free radical stabilizer. Modification of the PFPE by benzophenone was confirmed by evaluation of the chemical shift and the area change of the hydroxyl peak in the 1 H NMR spectra. The thermal stability of modified PFPE lubricants was studied using thermo-gravimetry. The improvement in the thermal stability was found to be a function of the amount of substituted hydroxyl groups in PFPE.

Copyright © 2011 by ASME

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