2900 inorganic glue by using yttrium, lanthanum and lanthanide oxide, mainly with yttrium oxide, lanthanum oxide, cerium oxide, neodymium oxide of rare earth oxide to enhance and improve the performance of high temperature use on the inorganic glue water.With water as the dispersant, scattered neutral system.2900 high temperature resistant inorganic gel is a kind of use of inorganic nanometer materials made by polycondensation reaction of high temperature resistant inorganic nano inorganic glue water, through to the composition formula and preparation process parameters selection, get the inorganic glue water's PH value is neutral suspended system, not only strong cohesive force and no corrosive to metal