用MOCVD法制备TiO_2/Fe_2O_3双包覆层珠光颜料  

Productive Technology of TiO_2/Fe_2O_3 Two-Coat Mica Pearlescent Pigment by Metal Organic Chemistry Vapour Deposition (MOCVD)

作　　者：章娴君[1] 王显祥[2] 郑慧雯[1] 

机构地区：[1]西南师范大学化学化工学院,重庆400715 [2]四川农业大学生命科学与理学院,四川雅安625014

出　　处：《西南师范大学学报（自然科学版）》2004年第2期247-250,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：重庆市科委攻关项目 ( 99-5 663 ) .

摘　　要：研究了在常压喷动流化反应器中 ,以金属有机化学气相沉积 (MOCVD)法制备双包覆层珠光颜料的工艺 .实验结果表明 :以Ti(OC2 H5) 4 为物源 ,在有氧情况下用高纯氮气作为载气 ,沉积温度为 30 0℃时 ,沉积的TiO2 膜晶形为锐钛型 ,温度升高至 5 0 0℃时 ,TiO2 膜晶形为金红石型 ,且包覆致密 .在此基础上控制不同的包覆时间 ,再包覆以Fe2 O3 为主的铁氧化物 ,可获得橘红。Two-coat mica pearlescent pigment has more advantage weather resistance and more plenty pearlescent effect than one-coat pigment. Two-coat pearlescent pigment was prepared in a spout-fluidized bed using metal organic chemistry vapour deposition(MOCVD) at normal pressure. Anatase TiO_2 was obtained at 300 ℃ in definite oxygen from tetrabutyl titanate(Ti(OC_2H_5)_4) which carried by pure nitrogen; denser coated rutile TiO_2 on mica can be prepared at 500 ℃. Different thickness of iron oxide was controlled by different deposition time coated on TiO_2 surface. The chrysoidine, golden-red soft pearlescent effect two-coat mica pearlescent pigment was prepared.

关 键 词：MOCVD法 制备 金属有机化学气相沉积 珠光颜料 双包覆层 喷动流化床 

分 类 号：TQ628.2[化学工程—精细化工]