Structural Control of Porous Fly-Ash and Flexural Strength by Zeolitization
Structural Control of Porous Fly-Ash and Flexural Strength by Zeolitization
复制标题
沸石化对多孔粉煤灰和弯曲强度的结构控制
DOI：
10.2472/jsms.52.601
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Teisuke Sato
中科院分区：
文献类型：
--
作者：
T. Kori;Tatsuo Besshi;Teisuke Sato
采用熔融石蜡胶体法制备了不同孔隙率的多孔性飞灰陶瓷。将聚对苯二甲酸乙二酯粉末用作可燃造孔剂。随着聚对苯二甲酸乙二醇酯粉末含量的增加，多孔飞灰的总孔隙率增大。随着总孔隙率的增加，多孔粉煤灰的抗折强度急剧下降。用3mol/dm~3氢氧化钠溶液在383K下处理烧结飞灰15h，在烧结飞灰表面形成一种沸石。沸石化处理后，烧结飞灰的抗折强度降低到原值的一半。
The porous fly-ash ceramics with various porosity were prepared using colloidal process with molten wax. Polyethylene terephthalate powders were used combustible pore-forming agents. The total porosity of porous fly-ash increased with the polyethylene terephthalate powder content. The flexural strength of porous fly-ash drastically decreased as the total porosity increased. By the treatment of the sintered fly-ash with 3mol/dm3 NaOH solution at 383K for 15h, phillipsite, a kind of zeolite, was formed on the sintered fly-ash surface. The flexural strength of sintered fly-ash decreased to half of the original value by the zeolitization treatment.