Porous or lattice material with reduced weight and reduced acoustic and thermal conductivity

摘要

porous or lattice of reduced weight and reduced acoustic and thermal conductivity material. # The present invention describes a characterized porous material comprising a porous matrix formed by pores which are in vacuum and wherein said porous material is sealed in surface by a layer waterproof constituted by the porous matrix itself melt surface or by a sealing element selected from a group consisting into surface pores of the porous matrix particles, at least an impermeable rigid sheet to gases and a continuous layer consisting of at least one resin impermeable to gases. Furthermore, the present invention also relates to the method for obtaining said porous material. The present invention also relates to the use of the porous material of the invention for making structural or insulating lightweight materials.