Magnetorheologische Elastomerkomposite sowie deren Verwendung

Magnetorheologische Elastomerkomposite aus mindestens einem eine thermoplastische Matrix bildenden thermoplastischen Elastomer und darin enthaltenen magnetisierbaren Partikeln, wobei die Elastomermatrix mindestens 10 Gew.-% Weichmacher, bezogen auf das thermoplastische Elastomer, enthaelt.

WO 2007012410 A1 UPAB: 20070411 NOVELTY - Magnetorheological elastomer composite (I) comprises at least one thermoplastic elastomer that forms a thermoplastic matrix comprising at least 10 wt.% of plasticizer, and magnetizable particles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of (I) comprising mixing the thermoplastic elastomer and the magnetizable particles under thermal treatment. USE - (I) is useful for the production of molded articles by extruding, injection molding or pouring, where a magnetic field is applied during and/or after the molding. (I) is useful as magnetically controllable elastomer composite with a magnetic circuit, at least an electromagnet and at least a permanent magnet for adjusting the operating point of the rigidity. (I) is useful as magnetically controllable elastomer composition for vibration damping, vibration isolation, actuators, safety switch, haptic system and artificial muscles (all claimed). ADVANTAGE - The tear elongation of (I) is larger than 300%, preferably larger than 800% (claimed). (I) has increased factor of mechanical characteristics, e.g. enables rigidity module in the magnetic field.