JP2012149658A5 - - Google Patents

Claims (9)

A plate containing metal oxide fine particles having an average particle size of 50 nm or less in excess of 65% by mass and less than 90% by mass, radiation scattering material in excess of 5% by mass and less than 30% by mass, and reinforcing fibers in an amount of 2% by mass to 20% by mass A dry pressure molded body,
An outer bag formed of a fiber covering material and containing the dry pressure-molded body;
I have a,
The outer bag is
The upper outer peripheral end and the lower outer peripheral end overlapped with the covering material are folded inside, and the folded upper outer peripheral end and lower outer peripheral end are stitched together or stitched together. A folded portion formed by
An intermediate portion formed by stitching a portion between the dry pressure-molded body of the covering material and the folded portion;
Heat insulating material, characterized in that it comprises a. The heat insulating material according to claim 1 , wherein the covering material is stitched with an inorganic fiber thread. The heat insulating material according to claim 2 , wherein the inorganic fiber yarn is at least one selected from the group consisting of glass fiber yarn, ceramic fiber yarn, and metal fiber yarn. The heat insulating material according to any one of claims 1 to 3 , wherein the covering material is made of inorganic fibers. The heat insulating material according to any one of claims 1 to 4 , wherein the metal oxide fine particles are silica fine particles and / or alumina fine particles. The heat-radiating material according to any one of claims 1 to 5 , wherein the radiation scattering material is silicon carbide. The heat insulating material according to any one of claims 1 to 6 , wherein the heat insulating material does not contain a binder. The heat insulating material according to any one of claims 1 to 7 , wherein the thickness is 30 mm or less. A method for producing a heat insulating material having a dry pressure molded body and an outer bag containing the dry pressure molded body,
Raw material containing metal oxide fine particles having an average particle size of 50 nm or less in excess of 65% by mass and less than 90% by mass, radiation scattering material in excess of 5% by mass and less than 30% by mass, and reinforcing fibers in an amount of 2% by mass to 20% by mass Filling the outer bag formed of a fiber covering material with powder, and dry pressing the raw material powder in the outer bag to form the dry pressure molded body ;
The upper outer peripheral end and the lower outer peripheral end overlapped with the covering material are folded inside, and the folded upper outer peripheral end and lower outer peripheral end are stitched together or stitched together. And forming a folded portion of the outer bag, and stitching a portion of the covering material between the dry pressure-molded body and the folded portion;
The manufacturing method of the heat insulating material characterized by including .