摘要：以纯锐钛矿型纳米二氧化钛粉体为原料,采用无机包膜和有机包覆改性方法,制备一种高透明度和高效屏蔽紫外线的有机-无机纳米TiO₂复合材料;通过透射电镜、X射线衍射、紫外-可见分光光度法等技术表征纳米复合材料的粒径、形貌、晶型、屏蔽紫外线性能和透明度;同时分析改性过程中有关无机包膜和有机包覆效果的影响因素。结果表明,该产品应用于防晒剂时,在包覆完整性、屏蔽紫外线性能和透明度等方面都超越了市售同类产品。

关键词：锐钛矿；纳米二氧化钛；复合材料；防晒剂

Abstract：A kind of organic-inorganic nanometer TiO₂ composites with high transparency and excellent anti-UV property was prepared,using inorganic and organic coating modification method with nanometer TiO₂ powders(anatase) as raw materials.By the method of TEM,XRD and UV-visible spectrophotometer,etc.,the particle size,internal morphology,crystal,the anti-UV property and transparency of the nanometer composites were characterized.The influence factors concerning the inorganic and organic coating in the process of modification were also analyzed.The result shows that the coating rate efficacy,anti-UV property and transparency of nanometer TiO₂ composites are far beyond the similar product for sale.

Keywords：anatase；nanometer titanium dioxide；composites；sunscreen