Multi-layer thermal insulation material

The utility model discloses a multi-layer thermal insulation material, belongs to the field of engineering thermal insulation materials, and particularly relates to a multi-layer thermal insulation material used in the engineering field. The multi-layer thermal insulation material comprises mirror surface layers (1) and mesh layers (2), and is characterized in that the mirror surface layers (1) and the mesh layers (2) are alternately assembled in a superposed way; two surfaces of each mesh are provided with convex hulls which are alternately arranged; the superposed adjacent mirror surface layers (1) and one mesh layer (2) are integrally fixed and connected through the tops of the convex hulls; and one mesh layer (2) is clamped between each mirror surface layer (1) and an adjacent interface, and a layer of closed thermal insulation space is formed. The utility model has the advantages that the multi-layer thermal insulation material is simple and ingenious in structural design, has an excellent thermal insula