| 含柔性链EP/SiO2-TiO2纳米复合材料的制备 |
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| 引用本文： | 陆绍荣,张海良,赵才贤,王霞瑜.含柔性链EP/SiO2-TiO2纳米复合材料的制备[J].高分子材料科学与工程,2005,21(3):253-257. |
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| 作者姓名： | 陆绍荣 张海良 赵才贤 王霞瑜 |
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| 作者单位： | 1. 湘潭大学高分子材料研究所,湖南,湘潭,411105;教育部重点实验室,桂林工学院有色金属材料及其加工新工艺实验室, 广西,桂林,541004
2. 教育部重点实验室,桂林工学院有色金属材料及其加工新工艺实验室, 广西,桂林,541004 |
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| 基金项目： | 国家自然科学基金项目(20374042)及广西自然科学青年基金项目(0447053) |
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| 摘 要： | 以聚乙二醇(PEG-2000)、甲苯二异氰酸酯(TDI)为原料合成预聚体。然后以3-氨基丙烷乙氧基硅烷(WD-50)对其封端，合成含有柔性链的硅烷偶联剂。并以其为改性剂。用溶胶-凝胶方法制备了EP／SiO2-TiO2纳米复合材料，利用红外光谱、动态粘弹谱仪、X射线衍射、冲击实验机、扫描电镜和原子力显徽镜等手段研究了这种材料的结构与性能。结果表明，与纯环氧树脂相比。改性材料的冲击强度提高了2～3倍，并具有较高的模量和热性能，玻璃化转变温度仅发生微小的变化。
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| 关 键 词： | 环氧树脂 溶胶-凝胶 柔性链 纳米复合材料 |
| 文章编号： | 1000-7555(2005)03-0253-05 |
| 修稿时间： | 2004年11月1日 |
STUDIES ON THE PREPARATION OF EP/SiO2-TiO2 NANOCOMPOSITES CONTAINING THE FLEXIBLE CHAIN |
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| LU Shao-rong,ZHANG Hai-liang,ZHAO Cai-xian,WANG Xia-yu.STUDIES ON THE PREPARATION OF EP/SiO2-TiO2 NANOCOMPOSITES CONTAINING THE FLEXIBLE CHAIN[J].Polymer Materials Science & Engineering,2005,21(3):253-257. |
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| Authors: | LU Shao-rong ZHANG Hai-liang ZHAO Cai-xian WANG Xia-yu |
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| Affiliation: | LU Shao-rong~ |
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| Abstract: | Siloxane coupling agent was synthesized by 3-aminopropyl triethyloxysiliane(WD-50) and prepolymer, which was synthesized from polyethylene glycol (PEG-2000) and toluene disocyanate. EP/SiO_2-TiO_2 nanocomposite has been prepared by a sol-gel method using prepolymer as modifier. The structure and properties of the nanocomposite was characterized by FT-IR spectroscopy, measurement viscoelasticity, XRD diffraction patterns, impact property, scanning electron microscope and atomic force microscope etc. The results show that the impact strength of the modified systems are 2~3 times higher than that of the unmodified systems, while the high modulus and good thermal properties are maintained, and the glass transition temperatures are little altered. |
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| Keywords: | epoxy resin sol-gel method flexible chain nanocomposites |
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