▎ 摘　　要

NOVELTY - A thermos bottle with a graphene thermal insulation coating, the outer wall surface facing the vacuum space of the inner wall of a thermos flask with a double-layer structure made of stainless steel is combined with a graphene material, and the graphene material is used. The excellent thermal insulation properties, combined with the vacuum thermal insulation structure of the bottle itself, make the thermal insulation bottle have a better thermal insulation effect, thereby prolonging the thermal insulation time.