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首页> 外文期刊>Journal of Applied Polymer Science >In situ solvothermal synthesis and characterization of transparent epoxy/TiO _2 nanocomposites
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In situ solvothermal synthesis and characterization of transparent epoxy/TiO _2 nanocomposites

机译：透明环氧/ TiO _2纳米复合材料的原位溶剂热合成与表征

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摘要

A solvothermal process was developed to in situ prepare epoxy (EP)/TiO _2 hybrid precursors. The chemical structure of samples was confirmed by X-ray and Fourier transformed infrared spectroscopy. Field emission scanning electron microscope micrographs of cured EP/TiO _2 hybrid composites showed that well-dispersed TiO _2 nanoparticles were successfully in situ formed in epoxy matrix through the solvothermal process. The thermogravimetic analysis, DSC, and gel content measurements showed that EP/TiO _2 hybrid precursors were fully cured with the glass transition temperature decreasing gradually. The effect of TiO _2 contents on optical and surface properties was investigated in detail. The results indicated that epoxy/TiO _2 nanocomposites exhibited excellent UV shielding effect and high visible light transparency. The contact angle of EP/TiO _2 nanocomposites, when the content of silane-coupling agent (KH560) was 5 g and the content of tetrabutyl titanate (TBT) was 3 g, can reach as high as 101°, which was 36° higher than that of pure EP, representing for the increase of hydrophobicity.
机译：开发了溶剂热法以原位制备环氧（EP）/ TiO _2杂化前体。样品的化学结构通过X射线和傅立叶变换红外光谱法确认。固化的EP / TiO _2杂化复合材料的场发射扫描电子显微镜显微照片显示，通过溶剂热法成功地在环氧基质中原位形成了分散良好的TiO _2纳米粒子。热重分析，DSC和凝胶含量测量表明，随着玻璃化转变温度逐渐降低，EP / TiO _2杂化前体被完全固化。详细研究了TiO _2含量对光学和表面性能的影响。结果表明，环氧/ TiO _2纳米复合材料具有优异的紫外线屏蔽效果和较高的可见光透明度。当硅烷偶联剂（KH560）的含量为5 g，钛酸四丁酯（TBT）的含量为3 g时，EP / TiO _2纳米复合材料的接触角可高达101°，比后者高36°。比纯EP的疏水性高。

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