Composite intelligent snow-melting agent capable of realizing phase-change energy storage and temperature-controlled precipitation, and preparation method thereof

The invention discloses a composite intelligent snow-melting agent capable of realizing phase-change energy storage and temperature-controlled precipitation. The composite intelligent snow-melting agent comprises a carrier and a high polymer film coating the surface of the carrier, wherein the a snow-melting substance and a phase-change material are encapsulated in the pore channels and the layered structure of the carrier. The invention also discloses a preparation method for the composite intelligent snow-melting agent. Compared with the prior art, the invention has the following advantages:since heat release of the composite phase-change material in different stages is employed, the range of temperature regulation is enlarged, and heat energy can be continuously provided to a pavementfor thawing of ice and snow on the pavement; meanwhile, the phase-change material release or absorb heat with the temperature change of an external environment, which influences the expansion with heat and contraction with col