A thermal barrier aluminum sheet for automobile exhaust pipe

The present invention discloses a heat-insulating aluminum sheet for an automobile exhaust pipe, an aluminum plate comprising a plurality of the insulating convex and concave portions, the convex portions and the concave portions are alternately arranged, each of said convex portions and or with / to each of said at least one recess microperforated, the microperforations in pore size 0.2mm-1mm. Because the embossing of a plurality of convex-concave shape is formed on the insulating aluminum, it plays a role of increasing the thermal insulation of aluminum stiffness; Further, the plurality of microperforations are formed on aluminum heat insulation, sound absorption functions. Due to the high rigidity of the insulation of the aluminum plate according to the present invention, a new structure to achieve the same performance in the premise of reducing the thickness of the insulating aluminum plate, not only cost savings, while in the case of the same pore size, a thin insulating aluminum more conducive to absorb automotive high-frequency noise.