臺灣博碩士論文加值系統

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.

誌謝 I
摘要 IV
Abstract V
圖目錄 IX
表目錄 XIII
第一章 緒論 1
1.1 前言 1
1.2研究背景 2
1.3研究動機與目的 3
第二章 文獻回顧 4
2.1磁性材料 4
2.1.1磁性 4
2.1.2磁性材料種類 5
2.1.2硬磁材料 10
2.1.3磁性高分子材料 11
2.2 鐵氧磁體 12
2.2.1鐵氧體之歷史沿革 12
2.2.2鐵氧體製程 13
2.2.3鐵氧體之分類 15
2.2.4鐵氧磁體之磁特性 18
2.3粒子分散性分析儀 (LUMisizer○R) 20
2.3.1粒子分散性分析儀 20
2.3.2粒子分散性分析儀附件磁性配組（LUM magnetic cell holder） 23
第三章 實驗 27
3.1實驗流程 27
3.2實驗材料 28
3.3實驗配方 29
3.4試樣製作 31
3.5儀器原理及操作條件 32
3.5.1 粒子分散性分析儀 (LUMisizer○R) 32
3.5.2 X光繞射儀 (X-Ray Diffraction；XRD) 33
3.5.3超導量子干涉磁量儀 (SQUID) 34
3.5.4掃描式電子顯微鏡 (SEM) 34
3.5.5熱重損失分析儀 (TGA) 35
3.5.6熱示差掃描量熱儀 (DSC) 36
3.5.7 布式黏度計(BrookField ) 37
3.5.8 熱機械分析儀(Thermo Mechanical Analyzer；TMA) 錯誤! 尚未定義書籤。
第四章 結果與討論 39
4.1原物料之分析鑑定 39
4.1.1熱性質 39
4.1.2型態分析 42
4.1.3流變分析 45
4.2 LUM之探討 47
4.2.1 環氧樹酯混摻鍶鐵氧體在LUM之分析 47
4.2.2 聚氨基甲酸酯混摻鍶鐵氧體在LUM之分析 71
4.3熱性質分析 47
4.4型態分析 102
4.5電磁性能 108
第五章 結論 114

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