均匀分散纳米二氧化钛的制备及其紫外线屏蔽性能

Preparation and UV Shielding of Homogeneous Dispersion Nanometer TiO_2

以TiCl4、三乙醇胺为原料配位形成可溶性配合物,将此配合物先驱液滴加到氨水中,得到锐钛矿型二氧化钛超细粒子溶胶。研究了先驱液的加入量对二氧化钛纳米粒子的粒径及紫外线透过率的影响。将丙烯酸树脂乳液加入到均匀分散的纳米二氧化钛粒子溶胶中,通过原位聚合的方法获得了纳米TiO2高度分散的丙烯酸树脂复合薄膜。结合纯丙烯酸树脂薄膜的紫外线透过率曲线分析了TiO2的紫外线屏蔽性能。该分散均匀的锐钛矿型TiO2对紫外线具有十分优异的屏蔽作用。

The dissoluble complex precursor prepared by using TiCl4 and triethanolamine as reactant was dropped into aqueous ammonia to obtain the sol of ultrafine anatase TiO2. The effects of precursor content on the size of TiO2 nanoparticle and UV transmittance were studied. Adding acrylic resin emulsion in the above sol, the composite acrylic resin film with homogeneous dispersion TiO2 was obtained by the way of insitu polymerization. The UV shielding characteristic of TiO2 was analyzed combining the transmittance curve of pure acrylic resin film. The homogeneous dispersion anatase TiO2 had excellent shielding effect for UV radiation.