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Abstract Foamed composite materials based on two thermoplastic elastomers reinforced with carbonyl iron particles (CIP) at 2% by volume were prepared by using foam injection molding. Nitrogen was used as… Click to show full abstract
Abstract Foamed composite materials based on two thermoplastic elastomers reinforced with carbonyl iron particles (CIP) at 2% by volume were prepared by using foam injection molding. Nitrogen was used as physical blowing agent. Specimens were characterized by density measurements and morphological analysis. Foams based on neat polymers showed a well-developed cellular morphology only far from the injection point. On the contrary, composite foams showed a considerably increased homogeneity of the cellular structure morphology, with small cells found since the injection point. The magneto-elastic characterization of samples showed that reinforced samples (both unfoamed and foamed) showed a magneto-elastic behavior under a simultaneous application of a pre-strain and a magnetic field: the magnetic field induced response exhibited a butterfly shaped trend, typical of magnetostrictive materials.
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2018
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