四针状氧化锌晶须的氧化硅包覆改性（英文）

Tetrapod-like Zinc Oxide Whisker Modified via Silica Cladding

通过并流中和法对T-Zn Ow进行氧化硅包覆改性,改善了与有机高分子材料的相容性。利用红外光谱、X射线衍射、扫描电子显微镜、激光粒度分析等手段对包覆后的T-Zn Ow进行了表征,探讨了p H值、陈化时间、温度以及Si O2包覆量对包覆效果的影响。结果表明：晶须表面成功包覆了非晶态硅氧化合物;包膜后的T-Zn Ow粒径减小,分散性能大幅度提高;实现均匀完整包覆的最佳工艺条件为：包膜p H=9~10,陈化时间5 h,反应温度90℃,Si O2包覆量10%（质量分数）。

Tetrapod-like zinc oxide whisker （T-ZnOw） was clad with SiO2 by a simultaneous neutralization method to improve its compatibility with organic polymeric materials. The structure of ZnOw cladded with SiO2 was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and particles size distribution, respectively. The influences of pH value, gelling time, cladding temperature and SiO2 amount on the cladding performance were investigated. The results show that the surface of T-ZnOw is clad with amorphous SiO2 layer. Its particles size decreases and the dispersity of T-ZnOw clad with SiO2 improves after cladding. The homogeneous and full cladding of T-ZnOw can be obatined under the optimized process condition （i.e., pH of 9-10, modification time of 5 h, reaction temperature of 90 ℃, and the mass fraction of SiO2 as 10%, mass fraction）.