叶腊石基锑掺杂二氧化锡复合导电粉体的制备及电性能  

Preparation and Electrical Property of Composite Conductive Powders Composed by Pyrophyllite Coated with Antimony-Doped Tin Oxide

作　　者：姚程[1] 盛嘉伟[1] 张俭[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310032

出　　处：《高校化学工程学报》2013年第1期147-151,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：浙江省科技厅优先主题专项(2007C111042);浙江省自然科学基金(LY12E02005)

摘　　要：通过化学共沉淀法制备了以叶腊石微粉为基体、表面包覆锑掺杂二氧化锡的复合导电粉体,采用X射线衍射(XRD)和场发射扫描电子显微镜(FE-SEM)分别对该复合导电粉体晶体结构和微观形貌进行表征,并进一步研究了各反应条件对复合粉体体积电阻率的影响。实验结果表明,当水解温度60℃、水解pH值为1、SnCl4加入量100%、Sb掺杂量16%、600℃煅烧1 h时,可得到体积电阻率为26.cm的复合导电粉体。该复合导电粉体可作为填料广泛应用于导电塑料、橡胶等复合导电产品,同时为矿物基功能材料的低成本制备提供了新的思路。Composite conductive powders of pyrophyllite coated with antimony-doped tin oxide nanoparticles were prepared by chemical co-precipitation method.The samples were characterized by X-ray diffraction（XRD） and scanning electronic microscopy（SEM）.Effects of hydrolysis temperature,pH value,SnCl4 addition amount,content of doped antimony,calcination temperature and time on the resistivity of the composite conductive powders were investigated.The results show that,when SnCl4 and doped antimony additions are 100% and 16% respectively,composite conductive powders with the resistivity of 26 Ω·cm could be prepared by hydrolyzing at 60℃ under pH value 1.0,and finaly calcined at 600℃ for 1 h.It can be expected that this composite conductive powders will be widely used as functional fillers in conductive coating,conductive plastic and other composite conductive materials,and using this composite conductive powder will provide a novel method to cheaply produce mineral-matrix functional materials.

关 键 词：导电粉 叶腊石 锑掺杂二氧化锡 化学共沉淀 电阻率 

分 类 号：TB34[一般工业技术—材料科学与工程]