High-temperature Resistant Lightweight Thermal Insulation Material with Dual-pore Structure and Preparation Method Thereof

摘要

A high-temperature resistant lightweight thermal insulation material having a dual-pore structure and a preparation method thereof, wherein the material is prepared by adding a molding promoter and a pore former into raw materials including alumina, silica and aluminosilicate powders, stirring the resulting mixture evenly and extrusion molding the same, followed by sintering, whereby the high-temperature resistant lightweight thermal insulation material having a dual-pore structure comprising macroscopic through-pores and micro-pores is obtained, and wherein the ratio of the total volume of the through-pores to the total volume of the micro-pores is 0.5 to 25:1.