▎ 摘　　要

NOVELTY - The utility model claims a sound-absorbing heat-insulating composite cotton felt, relating to cotton felt technical field comprising a base material layer, the upper surface of the base material layer is provided with a sterilizing layer, the upper surface of the sterilizing layer is provided with a heat insulating layer, the upper surface of the heat insulating layer is provided with a radiating layer, the upper surface of the radiating layer is provided with a sound absorbing layer, the bottom surface of the base material layer is provided with a protective layer. heat insulation layer made of glass fiber material, the cotton felt has good heat insulation effect, radiating layer made of graphene material, graphene has good heat conducting ability, sound absorbing layer made of mineral slag cotton material, the cotton felt has good sound absorbing ability, through setting spherical groove on the sound absorbing layer, the spherical groove can reflect and consume the sound for many times, the protective layer made of chinlon fibre material can make the bottom surface of the cotton felt more wearable, improve the wear resistance of the cotton felt, the reinforcing rib made of carbon fibre material is set in the base material layer, so that the cotton felt has good tensile ability.