中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (10): 1244-1246.

• 研究简报 • 上一篇    下一篇

PMMA/SiO2透明块体材料的热性能分析与微观结构表征

毕于铁1,2,任洪波2,张林2,王鲜1,2,尚承伟2   

  1. (1.西南科技大学材料科学与工程学院 绵阳；2.中国工程物理研究院激光聚变研究中心 绵阳 621900)
  • 收稿日期:2008-08-18 修回日期:2008-11-27 出版日期:2009-10-10 发布日期:2009-10-10
  • 通讯作者: 张林，男，研究员; E-mail:zhlmy@sina.com; 研究方向：功能材料
  • 基金资助:
    国家“八六三”计划(2007AA804128)资助项目

The Thermal Stabilities and Micro-structure of Transparency Bulk PMMA/TiO2 Hybrid Materials

 BI Yu-Tie1,2, LIN Hong-Bo2, ZHANG Lin2, WANG Xian1,2, SHANG Cheng-Wei2   

  1. (1.School of Material Science and Engineering,Southwest University of Science and Technology,Mianyang;
    2.Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900)
  • Received:2008-08-18 Revised:2008-11-27 Published:2009-10-10 Online:2009-10-10
  • Contact: Zhang lin

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摘要：

以正硅酸乙酯为前驱体，采用无溶剂水解技术，制备出了均一、稳定、透明的二氧化硅溶胶，通过透射电镜分析，粒径在100nm左右；在溶胶中加入甲基丙烯酸甲酯（MMA）和偶氮二异丁腈（AIBN），采用热固化的方式制备出透明的块体PMMA/SiO2杂化材料，通过差热分析、热重和透射电镜表征杂化材料的热性能和微观结构，实验结果表明：当体系中的SiO2含量超过20%时，杂化材料无明显的玻璃化转变温度；无机相均匀分散在有机相中，两相之间没有明显的相分离现象，制备出均一的杂化材料。

关键词: 有机-无机杂化材料, SiO2溶胶, 甲基丙烯酸甲酯

Abstract:

Silicon dioxide sol were synthesized from inorganic salt precursors tetraethylorthosilioate by hydrolysis and condensation in water solvent. The thermal stabilities and micro-structure of the PMMA/TiO2 hybrid materials are characterized with TEM,DSC and TG. The studies revel that the diameter of the particles are about 100nm and the glass transition temperature of PMMA/SiO2 hybrid materials including 20wt% of SiO2 disappears; and the forming of homogeneous inter-penetrated network between organic phase and inorganic phase demonstrate the miscibility of the two species has been improved.

Key words: organic-inorganic hybrid materials, silicon dioxide sol, mathylmethacrylate

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