【摘要】 对两种不同晶型的纳米TiO2进行紫外可见光谱的测试,结果表明在波长300~330nm的范围内,金红石型结构的纳米TiO2对紫外光有强的吸收。利用十二烷基苯磺酸钠对纳米TiO2进行改性,提高其表面的亲油性,使之对有机基团有比较好的亲和性。在丙烯酸树脂中加入改性的纳米TiO2,并进行超声波分散和成膜,获得含不同比例纳米TiO2的丙烯酸树脂复合薄膜,对不同的纳米TiO2复合薄膜进行紫外可见吸收光谱分析。结果表明,在一定范围内,随着纳米TiO2含量的增加,纳米复合涂层对紫外光的吸收率呈上升趋势,抗紫外线性能增强。更多还原

【Abstract】 Comparing with two kinds of different crystalline of nano-TiO₂ particles from the ultraviolet spectroscope,it was showed that the rutile nano-TiO₂ particles have stronger UV adsorption in the range of 300～330nm（wavelength）.Nano-TiO₂ particles modified by SDBS not only improve the surface oil dissolve but also have an excellent appetency with organic groups.The SDBS-modified nano-TiO₂ particles are added in acrylate resin,and process ultrasonic disperse to obtain the different percent of nano-TiO₂ composite of acrylic resin,then the films with different percent of nano-TiO₂ were characterized by ultraviolet spectrophotometer（UV）.The results indicate that,with the increase of nano-TiO₂ particles,nano-composite coatings take on the ascending trend of UV adsorption in some definite fields;therefore it was able to greatly resist the UV degradation.更多还原