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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林江珍(Jiang-Jen Lin) | |
dc.contributor.author | Jenny Jauhari | en |
dc.contributor.author | 仇寶雁 | zh_TW |
dc.date.accessioned | 2021-06-16T02:49:54Z | - |
dc.date.available | 2020-10-12 | |
dc.date.copyright | 2015-10-12 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-07-15 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54312 | - |
dc.description.abstract | Nanosilicate platelets (NSP) 是由層狀蒙托土 (Na+-MMT) 脫層而得。利用 sol-gel反應將 3-aminopropyltriethoxysilane (APTES) 與NSP邊緣 ≡Si—OH連接形成共價鍵之NSP-amine。另外,NSP-amine 與 Glycidyl methacrylate (GMA) 可藉由開環反應得 NSP-acrylate。定性分析方面利用 29Si 固態核磁共振光譜儀確定 APTES 接上 NSP。NSP-amine 及 NSP-acrylate 定量分析(接枝量和接枝率)由熱重分析儀 (TGA) 分析計算而得。進一步將 NSP、NSP-amine 和 NSP-acrylate 導入紫外線固化系統進行光交聯成膜。亦可將 NSP 和 NSP-amine 導入環氧樹脂藉由熱交聯硬化成膜。並以鉛筆硬度測試硬度差異。利用紫外線固化技術,導入0.5 及 1.0 wt% NSP-acrylate,硬度從4H(未添加黏土)提升至7H及8H。於環氧樹脂系統中,導入0.5 至5wt% NSP-amine,膜之硬度從HB(未添加黏土)提升至 2H、3H 和 4H。另外,未改質之 NSP 導入丙烯樹脂,膜之硬度提升至 6H。而 NSP/環氧樹脂膜提升至 2H。 | zh_TW |
dc.description.abstract | Nanoscale silicate platelets (NSP) were previously prepared from the newly developed exfoliation of sodium silicate clays (Na+-MMT) by ionic exchange reaction. We further designed the molecular composites by covalently functionalized NSP through its edged ≡Si—OH groups with 3-aminopropyltriethoxysilane (APTES) for amine-functionalized NSP. The consecutive reaction allowed the conversion of NSP-amines to NSP-acrylates through the reaction with Glycidyl methacrylate (GMA). NSP-amine was structurally characterized by 29Si solid-state NMR and thermogravimetric analysis (TGA), while NSP-acrylate only by thermogravimetric analysis (TGA). The NSP-acrylate was applied to the UV-cured resins through the acrylate polymerization in forming molecular composites exhibiting an highly enhanced hardness up to 6H and 8H from the pristine 4H (without clay) by 0.5 and 1.0 wt% NSP loadings, respectively. In epoxies, the NSP-amines promoted the hardness from HB to 2H, 3H, and 4H depending on the NSP loadings from 0.5% to 5% by weight. By comparison, the nanocomposites of dispersing NSP without the covalent bonding amine or acrylate functionalities only achieve the property of hardness in moderate degree, such as 6H and 3H for UV and epoxy systems, respectively. The significances of the silicate platelets in covalently bonding with organic polymer matrices as the molecular composites was realized by comparing with the analogous nanocomposites. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T02:49:54Z (GMT). No. of bitstreams: 1 ntu-104-R02549031-1.pdf: 3962822 bytes, checksum: 0307bcffbbcba0b9fc24d95fc9f29298 (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | Acknowledgements ....................................................................................................... I
中文摘要 ..................................................................................................... II Abstract .................................................................................................... IV Contents .................................................................................................... VI Figure Captions ………….……………………………………………............ VIII Table Captions ………………...……………………………………................. IX Scheme Captions .………………………………………………............................ X Chapter 1 Introduction and Literature Review ……....................................................1 1.1 Introduction of Nanomaterial ………….……......……………............….…. 1 1.1.1 Background …….………………………….….…...................……. 1 1.1.2 Layered Silicates of 2:1 Type ............................................................ 3 1.1.3 Nanosilicate Platelets (NSP) ............................................................. 6 1.2 Sol-gel Procedure ........................................................................................... 7 1.3 Clay Surface Modification by Covalent Bonding with Sol-gel Procedure .... 9 1.4 Application in Polymer/clay Nanocomposites ............................................. 10 1.4.1 Epoxy Resins Reinforced Layered Silicates for Thermal Curing .... 11 1.4.2 Acrylic Resins Reinforced Layered Silicates for UV-Curing .......... 12 1.5 Outline of Thesis .......................................................................................... 13 Chapter 2 Experimental Section ............................................................................... 15 2.1 Materials ...................................................................................................... 15 2.2 Preparation of Clay-amine ........................................................................... 16 2.3 Preparation of Clay-acrylate ........................................................................ 17 2.4 Preparation of Epoxy Resins for Thermal Curing ........................................ 18 2.5 Preparation of Acrylic Resins for UV-curing ............................................... 18 2.6 Characterization ........................................................................................... 19 Chapter 3 Result and Discussion .............................................................................. 20 3.1 Tethering APTES onto Clay Edges .............................................................. 20 3.2 Tethering GMA to NSP-amine ..................................................................... 24 3.3 XRD Result of MMT-amine and MMT-acrylate .......................................... 25 3.4 Dispersion Observation of Clay-amine and Clay-acrylate ........................... 27 3.5 Physical Properties of Clay and Clay-amine in Thermal Curing ................. 28 3.6 Physical Properties of Clay, Clay-amine and Clay-acrylate in UV-Curing .. 31 Chapter 4 Conclusions ............................................................................................. 35 References ............................................................................................... 36 | |
dc.language.iso | en | |
dc.title | 黏土之溶膠-凝膠反應與複合材料應用 | zh_TW |
dc.title | Clay Sol-Gel Reaction for Molecular Composite | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 謝國煌,沈永清,張信貞,王逸萍 | |
dc.subject.keyword | 黏土,奈米複材,環氧樹脂,丙烯樹脂,鉛筆硬度, | zh_TW |
dc.subject.keyword | clay,nanocomposites,epoxy,acrylates,pencil hardness, | en |
dc.relation.page | 53 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2015-07-15 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 高分子科學與工程學研究所 | zh_TW |
顯示於系所單位: | 高分子科學與工程學研究所 |
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