化学键分散剂在PZN—PZT浆料中的分散性研究  

Dispersion of PZN - PZT Powder in Organic Media with Chemically Bonded Dispersant

作　　者：曾华荣[1] 李国荣[1] 张望重[1] 江向平[1] 陈大任[1] 殷庆瑞[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,

出　　处：《化学学报》2001年第5期648-652,共5页Acta Chimica Sinica

基　　金：上海市科技发展基金

摘　　要：利用异丙醇钛与长链羧酸合成了一种化学键分散剂,采用沉降实验及FT-IR技术研究了该分散剂在PZN-PZT浆料中的分散性能.结果表明,该分散剂在PZN-PZT浆料中具有良好的分散性,浆料体系达到稳定状态时所需的分散剂量对应分散剂在颗粒表面上呈单分子层成键状态,分散剂分子与颗粒表面上的羟基发生化学反应,导致二者之间呈较强的化学键结合状态,从而有力地改善了PZN-PZT浆料中的分散性、均匀性.A chemically bonded dispersant was prepared by reaction of a titanium alkoxide with a long- chain carboxylic acid, and its dispersion in the PZN - PZT slurry was investigated through sediment test and FT - IR technique. The results show that the dispersant exhibited a good dispersion in PZN - PZT slurry, The dispersant concentration required to produce stable dispersions in nonaqueous media corresponded to the monomolecular layer coverage onto the PZN - PZT particle surface. The dispersant adsorbed firmly onto the PZN - PZT particles by a strongly chemical bond formed through reaction of alkoxy groups on the dispersant molecule with surface hydroxyl of the PZN - PZT powder.

关 键 词：化学键分散剂 PZN-PZT 分散性 厚膜压电陶瓷 流延工艺 流延浆料 

分 类 号：TQ174.754[化学工程—陶瓷工业] TQ174.47[化学工程—硅酸盐工业]