Dispersion Properties of Li1.075Nb0.625Ti0.45O3 Powders in Aqueous Media

被引：0
|
作者：
Li, Shaochun [1 ]
Geng, Yongjuan [1 ]
Wang, Haipeng [2 ]
机构：
[1] Qingdao Technol Univ, Sch Civil Engn, Qingdao 266033, Peoples R China
[2] Yunan Univ, Res Inst Engn & Technol, Kunming 650091, Peoples R China
来源：
CHINESE CERAMICS COMMUNICATIONS II | 2012年 / 412卷
基金：
中国国家自然科学基金;
关键词：
Dispersion properties; Li1.075Nb0.625Ti0.45O3; PAA-NH4; SUSPENSIONS; CERAMICS;
D O I：
10.4028/www.scientific.net/AMR.412.267
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The dispersion behavior of Li1.075Nb0.625Ti0.45O3 (LNT) powders in aqueous media was studied in this paper. The effect of pH, concentration of ammonium polyacrylate (PAA-NH4) dispersant and solids loading on the dispersion of LNT powders was reported. Optimum dispersing conditions were investigated in terms of zeta potential, sedimentation, mean particle size (d(50)), and rheology measurements. After adsorption of 0.6 wt% PAA-NH4, the absolute zeta potential reached the maximum value of 90 mV. The computed specific interaction energy (-Delta G(0) (SP)=8.6 kcal/mol) between particles and dispersant, indicated strong adsorption of PAA-NH4 on the LNT powder surface. Good agreement between zeta potential, mean particle size, sedimentation, and rheological test was found.
引用
收藏
页码：267 / +
页数：2
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