1. Highly thermally stable cyclotriphosphazene based perfluoropolyether lubricant oil
- Author
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Angeline Yan Xuan Tan, Jack Wen Huei Tsai, Qun Ye, Xiaobai Wang, Rong Ji, Jianwei Xu, Chaobin He, Ching Mui Cho, and Huiqing Xie
- Subjects
Thermogravimetric analysis ,Materials science ,Yield (engineering) ,Mechanical Engineering ,Chemical structure ,Surfaces and Interfaces ,Tribology ,Surfaces, Coatings and Films ,Viscosity ,Chemical engineering ,Mechanics of Materials ,Thermal ,Thermal stability ,Lubricant ,Composite material - Abstract
Novel cyclotriphosphazene based lubricant oil ( Lube-PN ) for heat-assisted magnetic recording media was synthesized by reacting hexachlorocyclotriphosphazene with pentafluorophenol, followed by treatment with a hydroxy-terminated perfluoropolyether in a high yield. Its chemical structure was confirmed by 1 H and 31 P NMR. Its properties including viscosity, thermal stability, tribology, laser resistance as well as mobility behaviour on the hard disk surface were investigated. The thermal properties of Lube-PN were analysed using thermogravimetric analysis, and the thermal aging results showed that the about 80% of Lube-PN was retained even after heating at 300 °C for 8 h. The Lube-PN also exhibited comparable bonding ratio, friction coefficient, moderate mobility and better laser resistance than commercial perfluoropolyether based lubricant oils.
- Published
- 2015
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