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Rubber magnets based on NBR and lithium ferrite with the ability to absorb electromagnetic radiation
Author(s) -
Kruželák Ján,
Kvasničáková Andrea,
Ušák Elemír,
Ušáková Mariana,
Dosoudil Rastislav,
Hudec Ivan
Publication year - 2020
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4891
Subject(s) - materials science , curing (chemistry) , composite material , natural rubber , ferrite (magnet) , electromagnetic shielding , acrylonitrile , magnet , polymer , mechanical engineering , engineering , copolymer
Rubber magnetic composites were prepared through the incorporation of magnetic soft lithium ferrite into acrylonitrile butadiene rubber. Standard sulfur‐based curing and peroxide curing systems were used for cross‐linking of rubber matrices. The experimental part was focused on the investigation of ferrite content and curing system composition on cross‐link density, physical‐mechanical, magnetic and shielding characteristics of composites. The results demonstrated that cross‐link density and physical‐mechanical properties of composites can be modified by both the amount of ferrite and composition of the curing system. The influence of curing systems on magnetic properties was negligible. It can be stated that the application of lithium ferrite to rubber matrix leads to the preparation of rubber composites with the ability to efficiently absorb harmful electromagnetic radiation in the tested frequency range. The shielding efficiency of composites increased with increasing content of magnetic filler.