▎ 摘　　要

NOVELTY - Gas-gel multilayer interval material, comprises a gas gel interval layer and a reflecting screen. The gas gel interval layer and reflecting screen are alternately arranged, and two sides of the gas gel interval layer are provided with a layer of reflecting screen in which the layer number of the gas gel interval layer is n, the layer number of the reflecting screen is n+1, and the value of n is ≥ 2, one side to the other side of gas gel multilayer interval material, the thickness of the gas gel interval layer is gradually reduced. USE - The gas-gel multilayer interval material is useful in the field of aerospace. ADVANTAGE - The gas-gel multilayer interval material reduces the amount of heat leakage caused by solid heat conduction and gas heat conduction and enhances the mechanical compression resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing gas-gel multilayer interval material, comprising preparing multilayer gas gel interval layer, and then alternately arranging and fixing the gas gel interval layer and multi-layer reflection screen to obtain final product.