Design and preparation of a kind metal/p (MMA-MAA) ERF

By the classical electrodynamics, the expression of interaction energy and force between two dipoles located arbitrary orientations are derived. Using direct polymerization method, we have prepared the metal/microcapsule-particles. Meanwhile an electrorheological fluid (ERF) made up by these composite particles is prepared. The ER behaviors were investigated by microscope and mechanical test, it is found that the very visible chain's structure of ERF can observe and the induced yield stress increased with the electric field and the particles' volume fraction.