The present application relates to a kind of nonwoven cloth across scale sound-absorbing-carrying integrated material based on bionic
turtle shell structure and its preparation method, the material includes successively from top to bottom:
surface layer plane nonwoven cloth, first bionic
turtle shell arc nonwoven cloth layer, second bionic
turtle shell arc nonwoven cloth layer and bottom layer plane nonwoven cloth;The first and second bionic turtle shell arc nonwoven cloth layer surface has periodic arrangement arc unit, and the convex surface of the arc unit of two bionic turtle shell arc nonwoven cloth layer is opposite and adheres, forms the core layer with hollow rhombic cavity array;The
surface layer, bottom layer plane nonwoven cloth are respectively adhered to the
concave surface of the arc unit of first and second bionic turtle shell arc nonwoven cloth layer, constitute semicircular cavity.The present application is through bionic turtle shell structure and hollow rhombic cavity, synergistically improves the lightweight, high carrying and cross-scale
wideband sound-absorbing performance of material, applicable to building
acoustics,
traffic noise reduction and industrial protection and other fields.