Phase-change material liquid and solid-phase propping agent formed by phase-change material liquid

The invention provides a phase-change material liquid and a solid-phase propping agent formed by the phase-change material liquid. The phase change material liquid is prepared from the following components in percentage by mass: 10-60 wt% of a super-molecule construction unit, 20-50 wt% of a super-molecule functional unit, 0.1-2 wt% of a dispersing agent, 0.1-1 wt% of an inorganic construction promoting agent, 0.1-1 wt% of an initiator and the balance of a solvent; the super-molecule construction unit comprises a melamine substance and/or a triazine substance; the super-molecule functional unit comprises dicyclopentadiene resin; and the dispersing agent comprises a hydroxyl-containing polysaccharide substance and a surfactant. After entering a reservoir, the phase-change material liquid can form a solid-phase substance to prop cracks under super-molecule chemical and physical action. Due to the injection of the non-solid phase, the string friction can be effectively reduced, and the requirements on constructi