Abstract: According to the microscope theories of heat conduction, a theoretical analgsis of heat conductionfactors for the high temperaturc thermal insulation materials was studied. The main physical andchemical factors including miroscope structure, crystal phase and chemical components which cffect thermalconductivity were exmained systematically, and consequently the new technical approach for predictionand optimizing the properties of thermal insulation materials was provided.

Key words: thermal insulation material, thermophysical property, prediction and optimization