Phase-change cold storage material capable of controlling phase change temperature and preparation method

The invention discloses a phase-change cold storage material capable of controlling a phase change temperature and a preparation method, and relates to the field of preparation of phase-change materials. The phase-change cold storage material is simple in structure; a material of a nucleating agent in a phase-change material system is replaced with nanoscale particles, and the nanoscale particles comprise nanometer silicon dioxide and nanometer calcium carbonate; the particle diameter of the nanoscale particles is smaller, so more nucleation points can be provided; the nanoscale particles have good dispersity and can be fully dispersed into the system, so all the raw materials in the system are dispersed more uniformly; and the nanometer silicon dioxide is stable in property and cannot react with other phase-change materials, so compared with a material used for preparing the phase-change material in the prior art, the phase-change point of the phase-change material can be effectively controlled, the phase ch