纳米TiO_2的随角异色性能研究
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摘要
利用透射电镜(TEM)对纳米二氧化钛的形貌和粒度进行分析,将纳米二氧化钛制成汽车漆,利用五角度色差仪对其随角异色性能进行分析。结果表明,单独的纳米二氧化钛漆膜没有随角异色效果,在白底上漆膜显白相,在黑底上显蓝相;纳米二氧化钛和铝粉配合制成汽车漆具有随角异色效果,二氧化钛的粒度对其随角异色性能有很大影响,平均粒径为280 nm的普通钛白改性铝粉漆无随角异色效果,平均粒径为35 nm的纳米二氧化钛改性铝粉漆有显著的随角异色效果,并且随纳米二氧化钛加量的增加,其不同角度的颜色差异增大。这是因为光照到纳米二氧化钛表面发生瑞利散射,与入射光平行方向显金黄相,与入射光垂直方显蓝相,其余方向则随角度变化呈现不同程度的蓝相。
The morphology and particle size of nano-TiO_2 were analyzed by transmission electron microscopy(TEM),and the optically variable property of the automobile paint made of the nano-TiO_2 was also analyzed by a five-angle colorimeter.The results show that the paint film containing single nano-TiO_2 has no angle-dependent optical effect,showing white phase on the white substrate while blue phase on the black substrate.The automobile paint composed of nano-TiO_2 and aluminum powder has an optically variable property.The particle size of TiO_2 has a great influence on the optically variable property of the paint,where the aluminum paint modified by ordinary titanium white with an average particle size of 280 nm has no angle-dependent optical effect but it shows significant angle-dependent optical effect for the aluminum paint modified the nano-TiO_2 with an average particle size of 35 nm.Furthermore,the color variation from different angles for the paint increases with increase of the nano-TiO_2 addition.The angle-dependent optical effect is originated from Rayleigh scattering occurring on the surface of nano-TiO_2 under illumination,exhibiting a golden yellow phase in the parallel direction with the incident light,blue phase perpendicular to the incident light and blue phase with different degrees in other directions dependent on the angles.
The morphology and particle size of nano-TiO_2 were analyzed by transmission electron microscopy(TEM),and the optically variable property of the automobile paint made of the nano-TiO_2 was also analyzed by a five-angle colorimeter.The results show that the paint film containing single nano-TiO_2 has no angle-dependent optical effect,showing white phase on the white substrate while blue phase on the black substrate.The automobile paint composed of nano-TiO_2 and aluminum powder has an optically variable property.The particle size of TiO_2 has a great influence on the optically variable property of the paint,where the aluminum paint modified by ordinary titanium white with an average particle size of 280 nm has no angle-dependent optical effect but it shows significant angle-dependent optical effect for the aluminum paint modified the nano-TiO_2 with an average particle size of 35 nm.Furthermore,the color variation from different angles for the paint increases with increase of the nano-TiO_2 addition.The angle-dependent optical effect is originated from Rayleigh scattering occurring on the surface of nano-TiO_2 under illumination,exhibiting a golden yellow phase in the parallel direction with the incident light,blue phase perpendicular to the incident light and blue phase with different degrees in other directions dependent on the angles.
引文
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[2]Wu Jianchun,Du Jianqiao,Wang Bin,et al.Application of rutile nano-TiO2in automotive paint[J].Iron Steel Vanadium Titanium,2018,39(5):65-70.(吴健春,杜剑桥,王斌,等.金红石纳米Ti O2及其在汽车漆中的应用[J].钢铁钒钛,2018,39(5):65-70.)
[3]Yamada Zenichi,Takeuchi Satoshi.Antimicrobial coating composition and production thereof,JPN:JP1996-34937[P].1996-02-06.
[4]Yao Chao,Zhang Zhihong,Lin Xiping.Nanosized titanium dioxide in sunscreen preparations[J].China Surfactant Detergent&Cosmetics,2003,33(5):333-336(in Chinese).(姚超,张智宏,林西平.纳米技术与纳米材料(Ⅴ)---防晒化妆品中的纳米Ti O2[J].日用化学工业,2003,33(5):333-336.)
[5]Wu Jianchun,Sun Zuofeng,Huang Wanxia.Research on modifying exterior latex coating with nano-TiO2and nano-SiO2[J].Iron Steel Vanadium Titanium,2005,26(1):34.(吴健春,孙作凤,黄婉霞.纳米Ti O2、Si O2复合改性苯丙外墙乳胶漆的研究[J].钢铁钒钛,2005,26(1):34.)
[6]Zhang Qinghong,Gao Lian.One-step preparation of size-dened aggregates of Ti O2nanocrystals with tuning of their phase and composition[J].Journal of the European Ceramic Society,2006,26:1535-1545.
[7]Takeshi Morimoto,Hiroyuki Tomonaga,Akemi Mitani.Ultraviolet ray absorbing coatings on glass for automobiles[J].Thin Solid Films,1999,351:61-65.
[8]Guo Gang,Yang Dingming,Xiong Yuzhu.Study on optical properties and application in polypropylene ageing resistance of nanoTi O2and nano-ZnO[J].Journal of Functional Materials Contents,2004,35(z1):185(in Chinese).(郭刚,杨定明,熊玉竹.纳米Ti O2和纳米Zn O的紫外光学特性及其在聚丙烯抗老化改性中的应用研究[J].功能材料2004,35(z1):183-185.)
[9]Zhao Jinhong.The research of crylic acid metal shining painting used in auto-mending[J].Coatings Painting&Electroplating,2005,3(1):6-9(in Chinese).(赵金红.汽车修补用丙烯酸金属闪光漆的研制[J].涂料涂装与电镀,2005,3(1):6-9.)
[10]Zhou Ronghua,Liu Zhong,Shen Qiuwang,et al.Composition design of metal shining coatings with angle-following color dissimilation for automobile[J].China Coatings,2009,24(2):49-53(in Chinese).(周荣华,刘忠,沈球旺,等.随角异色汽车金属闪光涂料的配方设计[J].中国涂料,2009,24(2):49-53.)
[11]Yang Zongzhi.The application of ultra-fine Ti O2in car-finishes with angle-following color dissimilation[J].China Paint,1995(1):33-35(in Chinese).(杨宗志.超细Ti O2在随角异色汽车漆中的应用[J].中国涂料,1995(1):33-35(in Chinese).)
[12]Chen Zhongqi,Wang Guangxing,Gui Yin.Colloid and interface chemistry[M].Beijing:Higher Education Press,2001(in Chinese).(陈宗淇,王光信,桂英.胶体与界面化学[M].北京:高等教育出版社,2001.)
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