▎ 摘　　要

NOVELTY - Phase change gel material with variable mechanical state, comprises: a poly N-isopropylacrylamide matrix with a three-dimensional crosslinked network structure; and phase change material compounded in the poly N-isopropylacrylamide. USE - The phase change gel material is used in multi-scale adhesion and attachment of various three-dimensional surfaces. ADVANTAGE - The phase change gel material has high phase change latent heat, excellent stability, good elasticity, softness, which is an energy storage material with more excellent mechanical property, also can change its shape and rigidity according to need. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing phase change gel material comprising: (1) taking initiator/tetramethyl ethylene diamine oxidation-reduction system as initiation system, preparing poly N-isopropylacrylamide hydrogel with three-dimensional crosslinked network structure, then soaking in lower alcohol to obtain alcohol gel; and (2) heating and melting the phase change material, and performing solvent replacement with the alcohol gel to obtain the phase change gel material.