3种分散剂对ITO浆料稳定性能的影响  

Effects of three dispersants on stability of ITO suspension

作　　者：朱协彬[1] 段学臣[1] 陈海清[2] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083 [2]湖南有色金属研究院,长沙410015

出　　处：《中国有色金属学报》2007年第1期161-165,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家高技术研究发展计划资助项目(2002AA302606)

摘　　要：选用3种分散剂(聚乙烯吡咯烷酮、柠檬酸三铵、β-丙氨酸),通过球磨分散法制备ITO浆料,通过考察球磨分散时间和分散剂量对ITO浆料稳定性能的影响,分析比较不同分散剂对浆料稳定性作用,并探究其分散机理。结果表明:3种分散剂分散机制均为静电和空间位阻稳定作用;在相对ITO粉体质量比为5%、最佳球磨分散时间为48 h时,在15 d内ITO浆料的RSH可维持在10%以内;3种分散剂对ITO浆料稳定性的影响由强至弱的顺序为:聚乙烯吡咯烷酮>β-丙氨酸>柠檬酸三铵,与其在溶液中酸碱性强弱顺序一致,其中聚乙烯吡咯烷酮的分散效果最好。The effects of three dispersants （PVP, Triammonium citrate,β-Alanine） on the stability of ITO suspension prepared by ball milling dispersion were studied. The influences of dispersing time and dispersant content on stability of ITO suspension were investigated. And the roles of the different dispersant and their dispersing mechanism on stability of ITO suspension were also investigated. The results show that the stability and dispersion mechanisms of the three dispersants are electrostatic and steric hindrance, and make ITO suspension keep RSH〈 10% within 15 days under the conditions that the dispersant/ITO powder is 5%（mass ratio） and optimal ball milling dispersion time is 48 h. The sequence of effects of these three dispersants on the stability oflTO suspension is PVP〉β-alanine〉triammonium citrate, which is in agreement with the sequence of their acidity and alkalinity in the suspension. Among these three dispersants, PVP is the best one for the stability of ITO suspension.

关 键 词：ITO浆料 分散剂 稳定性 球磨分散 

分 类 号：TQ63[化学工程—精细化工]