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研究生:吳信玠
研究生(外文):Wu, Hsin-Chien
論文名稱:熱塑性高分子微粒製備與增韌性質研究
論文名稱(外文):Prepartion of microparticles of thermoplastic polymers and their toughening properties
指導教授:陳劉旺陳劉旺引用關係邱文英邱文英引用關係
指導教授(外文):Chen, Leo-angChiu, Wen-Yen
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:材料科學與工程學研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2000
畢業學年度:88
語文別:中文
論文頁數:83
中文關鍵詞:聚醯胺熱塑性高分子微粒物理乳化界面乳化聚合環氧樹脂增韌
外文關鍵詞:PolyamideNylonThermoplastic microparticlePhysical emulsificationInterfacial emulsion polymerizationEpoxy toughening
相關次數:
  • 被引用被引用:8
  • 點閱點閱:368
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  • 下載下載:69
  • 收藏至我的研究室書目清單書目收藏:1
摘要
本論文研究乃是嘗試以”界面乳化聚合(Interfacial emulsion polymerization)”與”物理乳化(Physical emulsion)”製備聚醯胺粉末,同時對於實驗的條件與聚醯胺粒徑大小的關係作一探討,如變因攪拌速率、乳化劑用量、溫度以及PH值等。目前已得之結果由界面聚合所得的聚醯胺粉末最小粒徑約為30m;而物理乳化聚合之最小粒徑約5m,論文中已找出較佳的製備條件,並對聚醯胺粉末微粒的表面形態與熱性質作觀察,本實驗可以製成數十m粒徑大小之聚醯胺粉末,且粒徑呈常態分佈,不過所得之粉末形狀多呈現不規則形態。只有物理乳化在特定條件下可得到球形粉末。
在複合材料方面將不同種類的聚醯胺微粒與環氧樹脂混合作成複材,以DSC選取適當加工條件,並輔以FTIR鑑定反應完全與否。探討上述各種複材之熱性質及機械性質,在韌性方面有些許的改善,內文中亦將比較不同微粒含量的增韌效果。
Abstract
Two techniques are proposed to prepare the microparticles of thermoplastic polymers in this work: (1). Physical emulsification, (2). Interfacial emulsion polymerization. It is aimed to prepare polyamide microparticles with proper particle sizes. The variations of particle size with reaction conditions or techniques, such as agitation speed, emulsion agents, temperature and pH value were studied. The smallest size of the microparticles prepared from interfacial emulsion polymerization was about 30m and from physical emulsification about 5m. The surface morphology of the microparticles was examined by SEM. Most particles showed irregular surfaces and shapes except for the case of physical emulsification technique with cationic emulsifier as surfactant, from which spherical and smooth particles could be prepared.
With the addition of polyamide microparticles in epoxy resin, the curing reaction was examined by DSC, the chemical structure of cured composites was studied by FTIR, the thermal and mechanical properties of composite were tested. It was found that the toughness of epoxy resin could be effectively improved by polyamide microparticles.
目 錄
摘要.........................................................I
Abstract....................................................II
圖表索引....................................................VI
表索引..................................................... VI
圖索引....................................................VIII
第一章 緒 論.................................................1
第二章 文獻回顧..............................................3
2-1聚醯胺(Polyamides)........................................3
2-1-1聚醯胺簡介..............................................3
2-1-2界面聚合................................................5
2-1-3物理乳化................................................6
2-2環氧樹脂(Epoxy)...........................................7
2-2-1環氧樹脂簡介............................................7
2-2-2環氧樹脂種類及特性......................................7
2-2-3環氧樹脂改質...........................................12
第三章 實 驗................................................15
3-1 實驗流程................................................15
3-2 實驗儀器................................................16
3-3 界面乳化聚合............................................19
3-3-1 實驗藥品..............................................19
3-3-2 實驗步驟..............................................21
3-3-3 實驗控制變因..........................................22
3-3-4 粒徑分析..............................................23
3-3-5 微差熱掃描分析........................................23
3-3-6 熱重損失分析..........................................23
3-3-7 形態學分析─SEM.......................................23
3-4 物理乳化................................................24
3-4-1 實驗藥品..............................................24
3-4-2 實驗步驟..............................................25
3-5 Nylon與環氧樹脂複材.....................................26
3-5-1 實驗藥品..............................................26
3-5-2 複材製備步驟..........................................27
3-5-3 DSC分析...............................................27
3-5-4 TGA分析...............................................28
3-5-5 動態機械分析..........................................28
3-5-6 抗張強度測試..........................................28
3-5-7 耐衝極強度測試........................................28
3-5-8 形態學分析............................................29
第四章 結果與討論...........................................30
4-1界面乳化聚合.............................................30
4-1-1 界面乳化聚合反應條件..................................30
4-1-2 顆粒Morphology分析....................................38
4-1-3 熱重分析(TGA).........................................38
4-1-4 熱性質分析(DSC).......................................39
4-2 物理乳化................................................41
4-2-1物理乳化反應條件.......................................41
4-2-2 Morphology分析........................................43
4-2-3 熱重分析(TGA).........................................43
4-2-4 微差熱掃瞄分析(DSC)...................................41
4-3 增韌環氧樹脂...........................................45
4-3-1 適當加工條件 ─動態DSC................................45
4-3-2 複合材料之熱性質......................................45
4-3-3 耐熱性(TGA)...........................................47
4-3-4 動態機械分析(DMA).....................................47
4-3-5 抗張強度..............................................48
4-3-6 耐衝擊................................................50
4-3-7 形態學分析............................................51
第五章 結 論................................................52
參考文獻....................................................54
參考文獻
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2. K. Y. Choi, S. G.Lee, J, H Lee. and J Liu., J. Polym. Eng. Sci., Vol.35,p.1643 (1995).
3. Harry R. Allcock, Frederick W. Lampe, “Contemporary Polymer Chemistry”, Chap.2, 2nd, Prentice Hall (1990).
4. Reza Arshady and M. H. George, Polym. Eng. Sci., Vol.33, No.14,p.865 (1993).
5. E.L. Wittbecker and P.W. Morgan, J. Polym. Sci., Vol.40, p.289(1959).
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8. H. Schnell, Ind. Eng. Chem., Vol.51, p157 (1959).
9. F. Millich and C.E. Carraher, “Interfacial Synthesis-polymer application and technology”, vol.2 (1977).
10. Harkins, W.D., J. Am. Chem. Soc., Vol.69, p.1428 (1947).
11. Smith, W.V. and R.W. Ewart, J. Chem. Phys., Vol.16, p.592 (1948).
12. George Odian, “Principles of Polymerization”, 3rd, John Wiley & Sons (1991).
13. Tanaka May, “Epoxy Resins Chemistry and Technology”,p.1-4, (1975).
14. Neville Lee, “Handbook of Epoxy Resins”, chap.1,4, (1975).
15. 垣內弘著,賴耿揚譯,”環氧樹脂應用實務”,復漢出版社。
16. 馬振基編著,”高分子複合材料 上冊”,Ch 9,正中書局,1995初版。
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