Compositions and methods for making glass ceramic porous structures

The present application relates to compositions and methods for making glass ceramic porous structures. A porous structure is fabricated from a composition comprising a hollow glass body and an inorganic powder. The inorganic powder may act as a rigid frame element and/or a crystallizing agent, which reduces the shrinkage of the porous structure during firing. The porous structures thus produced have an open porosity of greater than 70% and a reduced shrinkage of less than 10% compared to green structures prior to firing. Also disclosed is a method of firing a green body structure made from the composition, the firing method comprising reducing the rate of temperature rise of the green body structure during the crystallization temperature range of the glass of the hollow body. 本申请涉及用于制造玻璃陶瓷多孔结构的组合物和方法。从包含空心玻璃体和无机粉末的组合物制造多孔结构。无机粉末可以起到刚性框架元件和/或结晶剂的作用，这降低了多孔结构在烧制过程中的收缩。由此制得的多孔结构具有大于70％的开放孔隙度，并且相比于烧制之前的生坯结构具有小于10％的减小的收缩。还公开了对从组合物制造的生坯结构进行烧制的方法，该烧制方法包括降低空心体的玻璃的结晶温度范围过程中的生坯结构的温度升温速率。