▎ 摘　　要

NOVELTY - Producing graphene-based auxetic porous structure, comprises (a) preparing an auxetic polymer sponge by triaxial thermal compression of the porous polymer sponge, and (b) immersing the auxetic polymer sponge in graphene oxide solution and drying to coat a graphene oxide layer inside the auxetic polymer sponge. USE - The auxetic porous structure is useful as absorbent material, sound-absorbing material, and vibration damping material (all claimed), for conference rooms, general buildings, hotels, laboratories, various mechanical devices, and engine rooms. ADVANTAGE - The method produces auxetic porous structure having excellent porosity, surface area, and mechanical properties, and is recyclable and economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-based auxetic porous structure prepared by the above method, where structure has Poisson's ratio of -0.0 to -0.5.