摘要
将粒径分别为1.5和25μm的堇青石粉体按一定比例球磨混匀,添加适当的粘结剂和造孔剂,经捏合、陈腐、挤出成型及烘坯处理后,程序升温至一定温度烧结2h制备膜支撑体。结果表明,细粉含量20%(质量分数)、1400℃烧结所得的支撑体综合性能较好:纯水通量为10.3m3/(m2·h);爆破压力为2.21MPa。其浸渍于5%(质量分数)NaOH中、置于100℃烘箱36h后,爆破压力仍为1.85MPa,表明其还具有良好的耐碱性能,适合碱性条件下的工业应用。
Cordierite powder with different diameters 1.5 and 25μm were ball-mill mixed in a certain proportion,in which appropriate binder and pore-forming agent were added.After kneading,aging,extrusion molding and drying,green bodies were sintered by temperature-programming to certain temperature and held for 2h.It is shown that support body with 20% fine powder and sintered at 1400℃ has much better comprehensive functions：water flux is 10.1m3/（m2·h） and the bursting strength is 2.21MPa.After dipping in 5% NaOH solution for 36h at 100℃,the support body still has a bursting strength up to 1.85MPa.This shows that the alkaline resistance property of cordierite support body is excellent and can be used under alkali conditions in industry.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第2期276-278,共3页
Journal of Functional Materials
关键词
堇青石
多孔支撑体
爆破法
cordierite
porous support
bursting method
