直接发泡法制备泡沫陶瓷过滤器  

Preparation of Ceramic Foam Filters via Direct Foaming

作　　者：林煌[1] 杨金龙[1] 唐来明[1] 席小庆[1] 梁睿[1] 黄勇[1] 

机构地区：[1]清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《稀有金属材料与工程》2007年第A01期376-378,共3页Rare Metal Materials and Engineering

摘　　要：介绍了一种新型泡沫陶瓷过滤器的制备方法并对其性能进行了测试研究。首先制备凝胶注模成型所需氧化铝陶瓷浆料,再添加吐温(Tween)和曲通(Triton)系列表面活性剂,通过机械搅拌使其直接发泡,再通过有机单体丙烯酰胺聚合,固化泡沫浆料,成型得到坯体,经干燥、烧结之后,制备成氧化铝泡沫陶瓷。研究了该工艺所成型泡沫陶瓷气孔率和通孔率(开孔气孔率)的关系,结果表明,直接发泡法可以制备高通孔率的泡沫陶瓷,能够满足过滤器使用时高开孔率和高强度的要求。A potential novel method to manufacture ceramic foam filters is introduced. Ceramic foam is prepared by direct foaming of liquid slurries with non-ion surfactants and gel-casting. The relationship between the porosity and open cell porosity of ceramic foams after direct foaming and sintering is investigated. Ceramic foams with high open cell porosity （more than 92%） and high compression strength are manufactured by this method. They can meet the standards of ceramic foam filters.

关 键 词：泡沫陶瓷 过滤 凝胶注模 直接发泡 

分 类 号：TM282[一般工业技术—材料科学与工程]