METHOD FOR MANUFACTURING POROUS GEL AND HEAT INSULATING MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To manufacture a porous gel having minute pores by a simple method. SOLUTION: The porous gel having minute pores can be manufactured by such a simple method that an organic solvent forming an azeotropic mixture with water is made to coexist with a wet gel and the water contained in the wet gel is removed from the wet gel by azeotropic distillation. The thermal conductivity of a heat insulating material containing this porous gel can be made equal to or lower than that of static air since the heat insulating material has high heat insulating performance. COPYRIGHT: (C)2004,JPO