▎ 摘　　要

NOVELTY - The application model relates to the technical field of silica gel foam, and claims a composite silica gel foam, comprising a silica gel foam main body, the bottom of the silica gel foam main body is fixedly provided with a waterproof bottom layer, the side wall of the silica gel foam main body is fixedly covered with a waterproof surface layer, the end surface of the silica gel foam main body is provided with a plurality of through holes, each of the through hole is filled with particle filler graphene the graphene filler is located between the waterproof surface layer and the waterproof bottom layer. The composite silica gel foam of the application has good heat conducting performance, which is good for the heat of the earphone sheath to emit in time, improves the wearing comfort level and does not affect the whole flexible and sound insulation performance of the composite silica gel foam, at the same time, it has good sweat-proof liquid permeability, effectively avoids the influence of the sweat gel foam main body, it is not easy to happen the phenomenon of internal bacteria growth.