堇青石水基流延浆料分散剂的选择及其作用机理  

Selection and effect mechanism of cordierite slurry dispersant for aqueous tape-casting

作　　者：侯朝霞[1] 牛厂磊[1] 王少洪[1] 王美涵[1] 胡小丹[1] 周丹[1] 周银[1] 

机构地区：[1]沈阳大学辽宁省新型功能材料与化学工艺重点实验室,辽宁沈阳110044

出　　处：《功能材料》2013年第9期1235-1238,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50702035);国家重点基础研究发展计划(973计划)子课题资助项目(2011CB612209);辽宁省高等学校杰出青年学者成长计划资助项目(LJQ2011125)

摘　　要：以溶胶-凝胶法制备的纳米级堇青石粉体作为原料,分别考察了聚乙烯吡咯烷酮、聚丙烯酸钠、多聚磷酸钠和柠檬酸钠作为分散剂时堇青石浆料的分散效果。通过对各体系电导率、粘度、沉降高度的分析,结果表明聚丙烯酸钠分散效果最好。分散剂聚丙烯酸钠通过静电力作用和空间位阻作用对堇青石粉体颗粒进行分散,且其吸附构型随着浆料pH值的增加而改变。聚丙烯酸钠的含量为1.5%(质量分数)时,达到最好分散效果。Cordierite powder derived from sol-gel method were used as raw materials. The dispersant effect of polyvinylpyrrolidone, sodium polyacrylate, sodium polyphosphate and sodium citrate were investigated, respectively. It turned out that the dispersant effect of sodium polyacrylate was the best according to measurement results of conductivity, viscosity and sedimentation height. The dispersant sodium polyacrylate had good disper sion ability by electrostatic forcing and steric hindrance effect to the cordierite slurry. And its adsorption config- uration changed with the increase of pH value. The sodium polyacrylate has the best dispersibility under the weight content of five percents.

关 键 词：堇青石 分散剂 水基流延 

分 类 号：TM174.75[电气工程—电工理论与新技术]