▎ 摘　　要

NOVELTY - The utility model claims a new heat-insulating composite felt, wherein they are average fibre is compounded, layer number of the glass fibre cotton felt is 2~10, layer number of the graphene layer number than the glass fibre cotton felt, at least one layer of glass fibre felt whose diameter is gradually increased from up to down by the glass fibre felt and the graphene layer, the average fibre diameter of each glass fibre felt are on a layer of 2 --mu-- m. the heat at the interface between the layer and the layer loss of the average fibre diameter of each layer of glass fibre felt different, propagation of the heat flow plays a certain barrier effect, the heat transferred to the graphene can be quickly diffused to the whole plane, it can effectively avoid the phenomenon of local overheating, improves the heat insulating performance of the wool felt.