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.
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Zhang et al. (2012) studied this question.
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