摘要
提出了一种坭兴陶塑性坯体干燥失重一干燥收缩的同步测定方法，通过计算机数据采集可获得连续失重、连续收缩的同步曲线。同步曲线的分析表明，在收缩结束时坯体的失水尚未结束，根据此现象提出了干燥后坯体孔隙率的计算方法。采用此同步测定方法研究了粉煤灰作为广西坭兴陶土少量外掺组分（掺入量分别为1、2、5、4、5％）对坭兴陶塑性坯体干燥及收缩的特点。研究表明，粉煤灰的掺入量为1％时塑性坯体可获最大失水速度；掺量为2～4％时坯体的保水能力得到提高，对应地可获得较低的干坯孔隙率。
A synchronal measurement of thermal gravity-drying shrinkage on green body of Guangxi Nixing ceramic is put forward, from which contineous weight loss and dimension shrinkage curves are obtained by computer data collection. Synchronal analisys indicates that, green body still contains certain amount of water while shrinkage completes basically, thus a simple calculation of dried body porosity is presented. This synchronal measurement is applied to investigate the drying and shrinkage characteristics of Guangxi Nixing ceramic green bodies containing flyash （1,2,3,4,and 5% respectively）, the results indicate that, with 1% addition of flysah the green body presents a maximum water-loss speed, and after drying equilibrium those with 2- 4% addition of flyash have lower porosities compared with the control sample.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2014年第2期37-40,共4页
China Ceramics
基金
广西大学新材料及其制备新技术重点实验室基金项目(GXKFJ11-03)
