研究生: |
廖翊成 Yi-cheng Liao |
---|---|
論文名稱: |
矽烷偶合劑接枝之氧化石墨烯及熱脫層氧化石墨烯之合成及探討其對乙烯基酯樹脂之体積收縮、機械性質、微觀型態結構、及X光散射特性之影響 Synthesis of silane-grafted graphene oxide (sg-GO) and silane-grafted thermally reduced graphene oxide (sg-TRGO), and their effects on the volume shrinkage, mechanical properties, cured sample morphology, and X-ray scattering characteristics for vinyl ester resins |
指導教授: |
黃延吉
Yan-Jyi Huang |
口試委員: |
邱文英
Wen-Yen Chiu 陳崇賢 Chorng-Shyan Chern |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2017 |
畢業學年度: | 105 |
語文別: | 中文 |
論文頁數: | 176 |
中文關鍵詞: | 氧化石墨烯 、熱還原氧化石墨烯 、矽烷接枝之氧化石墨烯 、矽烷接枝 之熱脫層氧化石墨烯 、抗收縮劑 、乙烯基酯樹脂 、聚合固化 、體積收縮 、機械性質 、接枝效率 |
外文關鍵詞: | graphene oxide (GO), silane-grafted graphene oxide (sg-GO), thermally reduced graphene oxide (TRGO), silane-grafted thermally reduced graphene oxide (sg-TRGO), low-profile additive (LPA), vinyl ester resins (VER), curing, volume shrinkage, mechanical properties, grafting efficiency |
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本 文探討添加氧化石墨烯(GO)、矽烷接枝氧化石墨烯(sg-GO)、熱脫層氧化石墨烯(TRGO)以及矽烷接枝熱脫層氧化石墨烯(sg-TRGO)等數種特用添加劑的合成及其對苯乙烯(St)/乙烯基酯(VER)/特用添加劑三成份系統於120 oC恆溫固化之微觀型態結構、體積收縮特性及機械性質的影響。
熱脫層氧化石墨烯(TRGO)是將氧化石墨烯(GO)置於1050 oC的高溫爐中 30秒合成熱脫層而得;後者,則是將平均粒徑為75μm的天然石墨粉以改良Hummers 法製得。矽烷接枝氧化石墨烯(sg-GO)係帶有不飽和C=C雙鍵的矽烷偶合劑,即甲基丙烯酰氧丙基三甲氧基矽烷(MPS),做為表面改質劑,在GO(or TRGO)/MPS/甲苯三者的重量比為1:5:94下,每次對氧化石墨烯(GO)於100oC下進行表面處理3hr,以不同反應次數(一或三次反應)得到不同接枝率之GO或TRGO。另外,亦利用FTIR計算一次與三次反應下之接枝密度,最後吾人將合成之添加劑(GO, sg-GO, TRGO, sg-TRGO)添加到VER中,亦研究其對St/VER(n=2)/添加劑三成分系統聚合固化後之體積收縮及機械性質之影響。
The effects of graphene oxide (GO), silane-grafted graphene oxide (sg-GO), thermally reduced graphene oxide (TRGO), and silane-grafted thermally reduced graphene oxide (sg-TRGO) as special addictive on the cured sample morphologies, volume shrinkage characteristics and mechanical properties for low-shrink vinyl ester resins (VER) cured at 120 oC were investigated.
The TRGO was produced by placing the GO in a high-temperature furnace kept at 1050 oC for 30 s, which was synthesized from natural graphites with average particle size of 75 μm by a modified Hummers method. The sg-GO was synthesized by using the silane coupling agent bearing acrylic C=C bonds, namely, γ-methacryloxy propyl trimethoxy silane (MPS), as a surface modifier for the surface treatment of GO at 100oC for 3 hr with different times of reaction for surface treatment between GO and MPS (n=1 or 3), and with a fixed weight ratio of GO/MPS/solvent at 1:5:94. The grafting density of MPS on the GO or TRGO has been measured by FTIR. Finally, the effects of additives synthesized, such as, GO, sg-GO, TRGO, and sg-TRGO, on the volume shrinkage and mechanical properties for the styrene(St)/vinyl ester resin(VER)/additive ternary systems after the cure have also been investigated.
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