| 块状PMMA/TiO_2有机-无机杂化材料的制备与表征 |
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| 引用本文： | 毕于铁,任洪波,张林,王鲜,秦元成.块状PMMA/TiO_2有机-无机杂化材料的制备与表征[J].材料导报,2009,23(8). |
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| 作者姓名： | 毕于铁 任洪波 张林 王鲜 秦元成 |
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| 作者单位： | 1. 西南科技大学材料科学与工程学院,绵阳,621002;中国工程物理研究院激光聚变研究中心,绵阳,621900
2. 中国工程物理研究院激光聚变研究中心,绵阳,621900 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以钛酸丁酯为前驱体,在亚化学计量的水中水解,以硅烷偶联剂(MPMS)和丙烯酸为改性剂,采用溶胶-凝胶法制得均一、稳定的淡黄色二氧化钛溶胶,透射电镜分析粒径约20～30nm;在溶胶中加入甲基丙烯酸甲酯(MMA)和偶氮二异丁腈(AIBN),采用热固化方法制得淡黄色透明的PMMA/TiO2块体材料;通过TEM、FT-IR、DSC和TG表征杂化材料的微观结构和热性能.研究表明,杂化材料中PMMA和TiO2是以共价键连接的,TiO2均匀分散在PMMA中,两相之间没有明显的相分离现象;当w(TiO2)=20%时,杂化材料的玻璃化转变温度为175℃,比纯PMMA提高了约70℃,分解温度为300℃,比纯PMMA提高了120℃.
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| 关 键 词： | 有机-无机杂化材料 TiO2溶胶 甲基丙烯酸甲酯 |
Preparation and Characterization of Bulk PMMA/TiO_2 Hybrids Material |
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| BI Yutie,REN Hongbo,ZHANG Lin,WANG Xian,QIN Yuancheng.Preparation and Characterization of Bulk PMMA/TiO_2 Hybrids Material[J].Materials Review,2009,23(8). |
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| Authors: | BI Yutie REN Hongbo ZHANG Lin WANG Xian QIN Yuancheng |
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| Affiliation: | 1 School of Material Science and Engineering;Southwest University of Science and Technology;Mianyang 621002;2 Research Center of Laser Fusion;CAEP;Mianyang 621900 |
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| Abstract: | Titanium oxide sol is synthesized from inorganic salt precursors butyltitanate,MPMS and acrylic acid by hydrolysis and condensation in water solvent.The thermal stabilities and micro-structure of the PMMA/TiO2 hybrid materials are characterized with TEM,FT-IR,DSC and TG.The studies reveal that the diameter of the particle is about 20~30nm and the existence of covalent bonds between organic phase and inorganic phase demonstrate the miscibility of the two species has been improved greatly by cross-linker trea... |
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| Keywords: | organic-inorganic hybrid materials titanium oxide sol methylmethacrylate |
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