▎ 摘　　要

NOVELTY - Transient composite material comprises heat-triggered solid-liquid phase change composite material comprising phase change substrate and enhancement phase, where the phase change substrate and enhancement phase are combined together through interface, the phase change substrate comprises phase change under thermal trigger condition, and the reinforcement phase comprises mechanical reinforcement phase, thermally conductive enhancement phase and photothermal enhancement phase. USE - Transient composite material useful in unmanned aerial vehicle (claimed). ADVANTAGE - The transient composite material has simple structure, low density and excellent mechanical properties, and is easy to form, quickly digested, prepared by simple process and made to any desired shape by pouring and molding, and meets the needs of future battlefields. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the transient composite material, involves (a) taking phase change substrate, heating and melting phase change substrate to obtain melt, where the phase change substrate comprises phase change under thermal trigger condition, (b) adding reinforcing phase to obtained melt, and uniformly mixing to obtain mixture, and (c) pouring obtained mixture to mold, performing compression molding, and cooling to room temperature to obtain formed transient composite material.