The study of giant electrorheological fluid and its application

Giant Electrorheological (GER) fluids change their flow properties dramatically when an electric field is applied. These fluids are usually composed of dispersions of polarizable particles in an insulating base fluid. In contrast to the existing electrorheological (ER) fluids, GER particles consisting of oxalate core with urea coating are found oil sensitive. The main objective of this thesis research is to investigate the wetting characteristics of the giant electrorheological (GER) particles suspended in different types of oil. The experimental results indicated that hydrogen bonds of the oil chains are instrumental in linking the oil to the GER particles, thus the highest yield stress of GER fluid was obtained when hydrogenated silicone oil was used as a suspending phase. In this the...[ Read more ]