Iron particle and anisotropic effects on mechanical properties of magneto-sensitive elastomers

摘要

Graphical abstract Display Omitted Highlights • Model developed for two component system was in a close agreement with the experimental results. • Isotropic compressive and tensile studies show a dominance of the electrolyte-reinforced rubber specimens. • The rubber specimen filled with carbonyl exhibit higher anisotropic effect (11%). Abstract Rubber specimens were prepared by mixing micron-sized iron particles dispersed in room-temperature-vulcanized (RTV) silicone rubber by solution mixing. The possible correlations of the particle volume, size, and distribution with the mechanical properties of the specimens were examined. An isotropic mechanical test shows that at 60phr, the elastic modulus was 3.29MPa (electrolyte), 2.92MPa (carbonyl), and 2.61MPa (hybrid). The anisotropic effect was examined by curing the specimen under magnetic fields of 0.5–2.0T at 90° relative to the applied strain. The measurements show anisotropic effects of 11% (carbonyl), 9% (electrolyte), and 6% (hybrid) at 40phr and 1T. At 80phr, the polymer-filler compatibility factor (c-factor) was estimated using the Pythagorean theorem as 0.53 (regular) and 0.73 (anisotropic studies). The improved features could be useful in applications such as controlled damping, vibrational absorption, or automotive bushings.