▎ 摘　　要

NOVELTY - Preparing flexible phase-change composite material comprises (1) mixing nanocellulose, thermally conductive filler, acrylamide, ferric oxide and anti-freezing agent to obtain a uniform aqueous dispersion, mixing with paraffin according to different water-oil volume ratios, and performing high-speed shearing to obtain Pickering emulsion, and (2) adding initiator and crosslinking agent under the irradiation of ultraviolet light, and polymerizing acrylamide in the Pickering emulsion to obtain phase change composite material. USE - The method is useful for preparing flexible phase-change composite material, which is useful in field of waste heat utilization and thermal energy storage (claimed). ADVANTAGE - The method is simple. The material can collect large amount of waste heat and store it, has output voltage of 550630 mV, current of 90120 mA, and output power density of 3545 W/m2. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a flexible phase-change composite material.