Phase change energy storage composite material based on thermosensitive hydrogel packaging and preparation method thereof

The invention discloses a phase change energy storage composite material based on thermosensitive hydrogel packaging and a preparation method thereof. The composite material comprises the following components in parts by weight: 20-50 parts of a phase change material; 40 to 80 parts of an N-isopropylacrylamide monomer; 0.5-5 parts of a cross-linking agent; 0.1 to 2 parts of an initiator; the temperature-sensitive hydrogel network can be used for effectively packaging the PCM, so that the PCM is prevented from leaking in a molten state. Due to the temperature-sensitive characteristic of the hydrogel, the network structure can be adjusted according to the environment temperature, and intelligent packaging is achieved; the phase change temperature of the composite material can be accurately controlled by adjusting the low critical solution temperature of the hydrogel, so that the composite material can adapt to different application environments; nanoscale interpenetration of a hydrogel network and a polyimide m