TITLE:
Effect of Surfactant HLB Value on Settlement Stability of Magnetorheological Fluid
AUTHORS:
Yanwen Jiang, Yiping Luo, Hongjuan Ren, Dan Wei
KEYWORDS:
Magnetorheological Fluid, Surfactant, Sedimentation Stability, HLB Value
JOURNAL NAME:
Open Access Library Journal,
Vol.5 No.11,
November
13,
2018
ABSTRACT: The hydrophilic-hydrophobic balance (HLB) of surfactants has a great influ-ence on surfactants. Among them, polyethylene glycol has an HLB value of 20 and is highly hydrophilic; oleic acid has an HLB value of 1, which is very lipophilic; and sodium dodecylbenzenesulfonate has an HLB value of 10.6 be-tween the two. This paper explores the use of these three surfactants with typi-cal HLB values to improve the performance of magnetorheological fluids, mainly to study its effect on the stability of magnetorheological fluids. Tests have shown that the use of lipophilic surfactants in oil-based magnetorheologi-cal fluids has better sedimentation stability than the use of hydrophilic surfac-tants.