VACCUM INSULATION PANEL USING GETTER COMPOSITES

摘要

PURPOSE: An insulating material with composite getter agent is provided to increase initial conductivity by using the getter agent in which zeolite and calcium oxide are mixed. CONSTITUTION: A vacuum insulating material includes a getter agent in which zeolite and calcium oxide are mixed. The getter agent includes 1-50 wt% of zeolite and 50-99wt% of calcium oxide. The Si/Al molar ratio of the zeolite is 1.0-1.5. The zeolite has 300-1,000m^2/g of the specific surface area, and a micro-pore size smaller than 0.1-100 nanometers. The zeolite is used after a heat treatment at 300-1,000 deg. C for 1-10 hours. The zeolite is produce in a granule form. The zeolite granule is produced by mixing zeolite powder with an inorganic binder. The diameter of the granule is 0.1-10 millimeters. The inorganic binder uses one or more selected from a silica compound, a silane compound, an alumina compound, or clay. [Reference numerals] (AA) Comparative embodiment 1; (BB) Embodiment 1; (CC) Embodiment 2