摘要
实验以洛川黄土为原料,淀粉为造孔剂,采用添加造孔剂、滚压成型法和固态粒子烧结法制备黄土基陶瓷膜支撑体。研究了造孔剂淀粉的添加量对黄土基支撑体性能的影响。实验通过压汞法、三点弯曲法、质量损失法、热重差热分析、扫描电镜(SEM)、X射线衍射(XRD)、及自制装置对支撑体的孔隙率、抗折强度、酸碱腐蚀率、晶相组成、表面微观形貌和纯水通量等性能进行分析表征。研究结果表明,在黄土基陶瓷膜支撑体制备过程中,当淀粉的添加量为8%时,制备出来的支撑体性能最佳。此时支撑体的孔隙率达到了32%、平均孔径为4.83μm、纯水通量为6232.1 L/m^2·h·MPa、抗折强度为36.2 MPa、酸碱质量腐蚀为0.07%/0.02%。
In this research,Luochuan loess and starch were used as the raw material and pore-forming agent,respectively.The loess-based ceramic membrane support was mainly prepared by adding a pore former,a roll forming method and a solid particle sintering method.The effect of the amount of pore-forming starch added on the properties of the loess-based support was studied.The three-point bending method,mercury intrusion method,mass loss method,thermogravimetric thermal analysis,scanning electron microscopy(SEM),X-ray diffraction(XRD),and self-made device were adopted to analyze and characterize the properties such as flexural strength,porosity,acid-base corrosion rate,crystal phase composition,surface micro-morphology and pure water flux of the support.The results of the study have shown that in the preparation process of loess-based ceramic membrane support,when the addition amount of starch was 8%,the prepared support had the best performance with the pure water flux supported of 6232.1 L/(m^2·h·MPa),the flexural strength of 36.2 MPa and the acid-base mass corrosion of 0.07%/0.02%.
作者
李岩
同帜
刘婷
闫笑
周广瑞
孙若男
LI Yan;TONG Zhi;LIU Ting;YAN Xiao;ZHOU Guangrui;SUN Ruonan(School of Environmental and Chemical Engineering, Xi' an Polytechnic University, Xi' an 710048, China;Xianyang Research & Design Institue of Ceramics, Ltd., Xianyang 712000, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第4期4175-4179,4214,共6页
Journal of Functional Materials
基金
陕西省科技厅重点研发计划-重点资助项目(2018ZDXM-SF-094)。
关键词
黄土
造孔剂
陶瓷膜支撑体
孔隙率
纯水通量
loess
pore forming agent
ceramic membrane support
porosity
pure water flux
作者简介
李岩(1994-),男,陕西延安人,在读硕士研究生,主要从事新型环保材料(功能性陶瓷膜)方向研究;通讯作者:同帜,E-mail:1018915428@qq.com。
