Influence of NdFeB Fillers on Tensile and Electromagnetic Properties of Natural Rubber

Puripat LERTSURAWAT; Prachid SARAMOLEE; Taweesin WONGPOT; Chitnarong SIRISATHITKUL

Authors

Puripat LERTSURAWAT Magnet Laboratory, Molecular Technology Research Unit, School of Science Walailak University, Nakhon Si Thammarat 80161
Prachid SARAMOLEE Material Sciences and Engineering Program, School of Engineering and Resources Management, Walailak University, Nakhon Si Thammarat 80161
Taweesin WONGPOT Center for Scientific and Technological Equipments, Walailak University, Nakhon Si Thammarat 80161
Chitnarong SIRISATHITKUL Magnet Laboratory, Molecular Technology Research Unit, School of Science Walailak University, Nakhon Si Thammarat 80161

Keywords:

Natural rubber, neodymium-iron-boron, tensile test, permittivity, magnetic moment

Abstract

Tensile and electromagnetic properties of hard magnetic natural rubber composites were studied. In a fabrication stage, neodymium-iron-boron (NdFeB) magnets were recycled from electronic wastes, broken and then ball-milled for 1 - 3 h. The NdFeB powder was then incorporated into natural rubber (NR) by a 2-roll mill technique. Since the NdFeB powder behaved as a non-reinforced filler, thus, it inhibited cross-linking and stress-induced recrystallization. Therefore, the cure time and the tensile strength of the NdFeB-NR composites were reduced compared to the control sample without magnetic fillers. The addition of NdFeB fillers improved the electrical permittivity of NR and the magnetic moment in NdFeB-NR composites could be measured by a fluxmeter.

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