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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SiO2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℃,SiO2包覆量10%(质量分数)。
Abstract：Tetrapod-like zinc oxide whisker(T-Zn Ow) was clad with SiO2 by a simultaneous neutralization method to improve its compatibility with organic polymeric materials. The structure of Zn Ow cladded with SiO2 was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and particles size distribution, respectively. The influences of p H value, gelling time, cladding temperature and SiO2 amount on the cladding performance were investigated. The results show that the surface of T-Zn Ow is clad with amorphous SiO2 layer. Its particles size decreases and the dispersity of T-Zn Ow clad with SiO2 improves after cladding. The homogeneous and full cladding of T-Zn Ow can be obatined under the optimized process condition(i.e., p H of 9-10, modification time of 5 h, reaction temperature of 90 ℃, and the mass fraction of SiO2 as 10%, mass fraction).
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基本信息:
DOI：10.14062/j.issn.0454-5648.2016.11.18
中图分类号:TB332
引用信息:
[1]刘自力,任丽,吴嘉恩,等.四针状氧化锌晶须的氧化硅包覆改性（英文）[J].硅酸盐学报,2016,44(11):1662-1667.DOI:10.14062/j.issn.0454-5648.2016.11.18.
基金信息:
国家自然科学基金项目(21276054,21676060)
2016-10-25
2016-10-25
2016-10-25