| abstract |
The utility model relates to a cold chain transportation technical field, concretely relates to cascade type phase transition cold storage boxboard structure and cold storage box thereof, the utility model discloses a boxboard structure includes phase change material board, heated board and the polyurethane board that sets gradually from inside to outside, phase change material board is paraffin/modified silica composite phase change material board, heated board and polyurethane board pass through cascade type coupling encapsulation, the utility model discloses a composite phase change material board can effectively solve cold storage agent phase transition latent heat and hang down, has the supercooling phenomenon and easily takes place phase separation scheduling problem to the high efficiency, energy-conservation and the environmental protection of cold chain transportation are realized to apparent extension heat preservation time; the utility model discloses a cold-storage box adopts aforementioned boxboard structure, and whole coefficient of thermal conductivity is low, heat accumulation density is big, the incubation time is long. |