한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)
- 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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- Pages.83-84
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- 2002
Effect of Chain Matching between Hydrocarbon and Fatty Acid on High Pressure Rheology
- Ohno, N. (Department of Mechanical Engineering, Saga University) ;
- Mukai, R. (Department of Mechanical Engineering, Saga University) ;
- Rahman, Md.Z. (Department of Mechanical Engineering, Saga University) ;
- Shibata, K. (Department of Transport Vehicles Engineering, Kurume Institute of Technology)
- 발행 : 2002.10.21
초록
For estimation of chain-matching phenomena between normal paraffin as a solvent and straight-chain fatty acid as an additive, the density measurement of n-dodecane, n-tetradecane and n-hexadecane were carried out at oil temperature 313K and pressure up to 1.3 GPa. Their solidification pressure were easily determined by the appearance of molecular crystal, abrupt volumetric contraction and generation of heat of solidification and showed minima under the matching condition. The bulk modulus K of molecular crystal was evaluated using phase diagram. The bulk modulus showed maxima under the each matching condition. The chain matching effect on the bulk modulus beyond the scope of the interfacial phenomena are confirmed.