本研究主要是利用S.T.E.P.技術研究磁性粒子之磁性行為。首先，一開始先使用熱重損失分析儀、黏度計、X光繞射儀探察原物料基本性質。接著，第一部分為使用鍶鐵氧體(SrFe12O19)磁性粒子，混摻於基材環氧樹脂(Epoxy resin)、聚氨基甲酸酯(Polyurethane)，於粒子分散性分析儀(LUMiSizer)加裝磁性載具配件組，分析鍶鐵氧體的磁化行為，探究鍶鐵氧體因磁場、離心等效應進而產生的特性。第二部份為將鍶鐵氧體混摻於基材環氧樹脂、聚氨基甲酸酯中固化後，藉由熱重損失分析儀、熱示差分析儀、超導量子干涉磁量儀、掃描式電子顯微鏡、X光繞射儀，進而探究其熱性、磁性、微觀下之特性。

This study is on the magnetization behavior of magnetic composite particles by using S.T.E.P. technology. First, we used the TGA, viscometer and X-RD to determine the basic properties of raw materials. Next, the first part is the use of the strontium ferrite (SrFe12O19) powder individually mixed-doped on the substrate of epoxy resin and polyurethane, then we used LUMiSizer installation of LUM magnetic cell holder to analysis the magnetic composite particles behavior and the characteristic relation magnetization and centrifugal effect of magnetic composite particles. The second part of the individually mixed-doped strontium ferrite substrate in epoxy resin and polyurethane after curing, we learned the thermal properties with TGA, DSC, the microscopic properties with SEM, X-RD, the magnetic properties with SQUID.

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