纳米级xSb_2O_3·(1-x)SnO_2导电颜料的制备及烧结动力学  

Preparation of Nano-Sized xSb_2O_3·(1-x)SnO_2 Conductive Pigment and Its Sintering Kinetics

作　　者：付贤松[1] 谭俊茹[2] 沈腊珍[2] 侯文祥[2] 陈秀增[2] 

机构地区：[1]天津大学电子信息工程学院,天津300072 [2]天津大学理学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2004年第5期405-409,共5页Journal of Tianjin University：Science and Technology

摘　　要：高分子绝缘材料的广泛运用给工业生产和人们生活带来了极大的方便,其静电效应也带来了严重的危害.纳米级xSb2O3·(1-x)SnO2导电颜料属于半导体材料,作为一种颜料添加于涂料中,涂覆于绝缘制品表面,使其具有导电、抗静电和屏蔽电磁波等功能.以尿素为沉淀剂,利用均匀沉淀法制备出纳米级xSb2O3·(1-x)SnO2导电颜料,粒径约为10nm左右,电阻率为36.70Ω·cm;研究了沉淀剂、反应温度、Sn4+/Sb3+摩尔比等最佳工艺参数选择;SO42-离子引入对掺锑SnO2(ATO)电性能、粒径大小及形貌的影响;建立了ATO前驱体烧结过程的反应动力学模型,进而估算烧结反应的活化能为67.793kJ/mol.The high polymer insulating material has brought not only great convenience for its extensive application, but also serious harm due to its static effect. Nano-sized xSb_2O_3·(1-x)SnO_2 conductive pigment, a semiconductor material,is added into the coating as pigment and doped to the surface of insulating products, so that the insulators can have the functions of electric conduction, antistatic, electromagnetic wave shielding , etc. Nano-sized xSb_2O_3·(1-x)SnO_2 conductive pigment with particle size of about 10 nm and resistivity of 36.70 Ω·cm, has been prepared by the homogeneous precipitation method with urea as precipitation reagent.The optimal processing parameters, such as precipitation reagent, reaction temperature, mol ratio of Sn^(4+)/Sb^(3+), and so on,was determined and the effect of the addition of SO_4^(2-) on electric property, particle size and pattern was analyzed. Finally, the reaction kinetics model at the sintering process of antimony doped tin oxide(ATO) precursor was established, and the activation energy of the sintering reaction was estimated to be (67.793) kJ/mol.

关 键 词：掺锑二氧化锡 导电颜料 尿素 烧结反应 动力学模型 纳米材料 静电效应 

分 类 号：TN304.21[电子电信—物理电子学] TQ628[化学工程—精细化工]