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Silane treatment of Fe3O4 and its effect on the magnetic and wear properties of Fe3O4/epoxy nanocomposites |
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| Authors: | J.O. Park S.J. Park |
| Affiliation: | a Department of Mechanical Engineering, Kyung Hee University, Yongin 446-701, Republic of Korea b School of Mechanical and Industrial System Engineering, Industrial Liaison Research Institute, Kyung Hee University, Yongin 446-701, Republic of Korea c Department of Chemistry, Inha University, 253, Nam-gu, Incheon 402-751, Republic of Korea |
| Abstract: | In this study, the effect of silane treatment of Fe3O4 on the magnetic and wear properties of Fe3O4/epoxy nanocomposites was investigated. Fe3O4 nanopowders were prepared by coprecipitation of iron(II) chloride tetrahydrate with iron(III) chloride hexahydrate, and the surfaces of Fe3O4 were modified with 3-aminopropyltriethoxysilane. The magnetic properties of the powders were measured on unmodified and surface-modified Fe3O4/epoxy nanocomposites using SQUID magnetometer. Wear tests were performed on unmodified and surface-modified Fe3O4/epoxy nanocomposites under the same conditions (sliding speed: 0.18 m/s, load: 20 N).The results showed that the saturation magnetization (Ms) of surface-modified Fe3O4/epoxy nanocomposites was approximately 110% greater than that of unmodified Fe3O4/epoxy nanocomposites. This showed that the specific wear rate of surface-modified Fe3O4/epoxy nanocomposites was lower than that of unmodified Fe3O4/epoxy nanocomposites. The decrease in wear rate and the increase in magnetic properties of surface-modified Fe3O4/epoxy nanocomposites occurred due to the improved dispersion of Fe3O4 into the epoxy matrix. |
| Keywords: | Fe3O4 Nanocomposites Silane Wear test Magnetization |
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