Dispersed fiber reinforced monolithic aerogels

摘要

The present invention relates to a self-supporting monolithic composite consisting of inorganic aerogels reinforced by dispersed fibers, wherein the aerogels comprise thickeners selected from polyacrylic acid derivatives, cellulose derivatives, calcium acetate, silicon acetate or mixtures thereof. The material has a thermal conductivity of less than 25 MW / M.K. measured according to the standard NF hot plate method at 12667 ℃ to 20 ℃. The invention also relates to a method for preparing the composite material.And the multilayer panels containing them and their use as insulation and / or voice, especially for building, vehicle or industrial insulation.