Analysis of Mechanical and Magnetic Properties of Rubber Magnet Composite Made From NdFeB Magnetic Particlesand Silicon Rubber
DOI:
https://doi.org/10.32493/pjte.v7i1.33360Keywords:
Magnet Permanent, NdFeB, Silicon Rubber, Ultimate Tensile Strength, Magnetic PropertiesAbstract
This study conducted the manufacture of permanent magnet composite based on NdFeB magnetic powder and polymer adhesives, the purpose of this study was to determine the effect of the composition of the mixing of raw materials on mechanical properties and magnetic properties. Neodymium Iron Boron (NdFeB) composite was made by mixing of NdFeB magnetic powder and binder of silicon rubber (SR) in form liquid. The percentage of silicon rubber was varried of 5 %, 10%, 20 % and 30% by volume. Both raw materials were mixed until homogeneous and poured into the mold and allowed to dry at room temperature.The formed samples were characterized which includes the measurement of tensile strength and magnetic properties . The characterization results show that the sample with 20 % and 30 % SR has good flexibilty and other samples are rigid or not flexible. The variation in the composition of silicon rubber has a significant effect on mechanical properties and magnetic properties, especially remanence. The characteristic of flexible rubber magnet with a composition of 20% and 30% silicon rubber is that it has a tensile strength of 9.31 - 11.46 N / mm2 with an elongation of 17.55-26.74% and a hardness of 38-42 HA. While the magnetic properties achieved are magnetic field strength = 430-500 Gauss, remanence = 30-35 emu / g and coercivity of 2000 OeReferences
Djuhana, Muljadi, Sunardi, and P. Sardjono, “Pembuatan dan Pengujian Bulk Density, Fluks Magnetik, dan Mikrostruktur pada Hybrid Magnet Berbasis NdFeB / BaFe12O19,†Pist. J. Tech. Eng., vol. 1, no. 2, pp. 25–29, 2018, doi: http://dx.doi.org/10.32493/pjte.v1i2.3199.
J. Kruzelak, I. Hudec, and R. Dosoudil, “Magnetic composites based on butadiene rubber and strontium ferrites,†MOJ Polym. Sci., vol. 1, no. 5, pp. 161–167, 2017, doi: https://doi.org/10.15406/mojps.2017.01.00025.
J. Stabik, A. Chrobak, G. Haneczok, and A. Dybowska, “Magnetic properties of polymer matrix composites filled with ferrite powders,†Arch. Mater. Sci. Eng., vol. 48, no. 2, pp. 97–102, 2011.
K. A. Malini et al., “Magnetic and processability studies on rubber ferrite composites based on natural rubber and mixed ferrite,†J. Mater. Sci., vol. 36, pp. 5551–5557, 2001, doi: https://doi.org/10.1023/A:1012545127918.
M. Sembiring, Muljadi, and V. A. Manik, “Manufacture and characterization of a bonded magnet barium hexaferrite–neodymium iron boron with variation in composition of epoxy resin,†AIP Conf. Proc., vol. 2221, pp. 1–5, 2020, doi: https://doi.org/10.1063/5.0003259.
M. Li et al., “Flexible magnetic composites for light-controlled actuation and interfaces,†Chem. Eng. J., vol. 115, no. 32, pp. 8119–8124, 2018, doi: https://doi.org/10.1073/pnas.1805832115.
Ramlan, P. Sardjono, Muljadi, D. Setiabudidaya, and F. Gulo, “Analysis of physical and magnetic properties of composite NdFeB bind with polyvinyl alcohol,†J. Phys. Conf. Ser., vol. 985, no. 012047, pp. 1–5, 2018, doi: https://doi.org/10.1088/1742-6596/985/1/012047.
R. Setnescu et al., “Magnetic flexible material containing microcrystalline NdFeB powder,†J. Optoelectron. Adv. Mater., vol. 8, no. 2, pp. 533–536, 2006.
S.-E. Lee, S. P. Choi, K.-S. Oh, J. Kim, S. M. Lee, and K. R. Cho, “Flexible Magnetic Polymer Composite Substrate with Ba1.5Sr1.5Z Hexaferrite Particles of VHF/Low UHF Patch Antennas for UAVs and Medical Implant Devices,†Mater. (Basel, Switzerland), vol. 13, no. 4, pp. 1–13, 2020, doi: https://doi.org/10.3390%2Fma13041021.
