反应物的量对多孔堇青石陶瓷孔径的影响  

Effect of Amount of Reactant on Pore Size of Porous Cordierite

作　　者：高金锋[1] 姜灵青 尹亚[1] 曹宏[1,2] 薛俊 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430074 [2]湖北省环境材料与膜技术工程技术研究中心,湖北武汉430074

出　　处：《四川建材》2017年第12期1-2,14,共3页Sichuan Building Materials

基　　金：武汉工程大学研究生教育创新基金(CX2016019);湖北省自然科学基金项目(2014CFB788);武汉工程大学科学研究基金(K201465)

摘　　要：多孔堇青石陶瓷具有较低的热膨胀性和优异的化学惰性。本文以堇青石粉、氧化铝粉、二氧化硅粉、氧化镁粉为主要原料,用挤出成型和高温烧结的方法制备出了多孔堇青石陶瓷,并对所制备样品的抗折强度、孔隙率、孔径大小及分布、微观结构等进行了测试。结果表明:反应物的用量对多孔堇青石陶瓷性能有较大影响,其中反应物用量为A时,陶瓷各项性能指标更优,并且随着反应物用量的减少,所制备样品的抗折强度先增大后保持基本不变,开孔孔隙率先减小后基本保持不变,孔径先增大后减小,孔道不断变小变窄。The porous cordierite ceramic has low thermal expansion and excellent chemical inertness. In this paper,the porous cordierite ceramic was prepared by the method of extrusion molding and high temperature sintering with cordierite powder and alumina powder,silica powder,magnesium oxide powder as the main raw material. The flexural strength,porosity,pore size,distribution and microstructure of the prepared samples were tested. The results show that the amount of reactant has a great influence on the performance of porous cordierite ceramic.When the amount of reactant is A,the performance of ceramic is better.With the decrease of the amount of reactant,the flexural strength of the prepared samples increased first and then remained unchanged,the porosity of the prepared porosity decreased first and then remained unchanged,the pore size increased first and then decreased,the channel is getting smaller and narrower.

关 键 词：堇青石 陶瓷 挤出成型 抗 

分 类 号：TQ174.75[化学工程—陶瓷工业]