Cold-chain transportation phase change material and preparation method thereof

Abstract

The invention discloses a cold-chain transportation phase change material and a preparation method thereof. The phase change material is prepared from the following components by weight percent: 30-37% of sodium sulfate, 40-50% of water, 4-20% of ammonium chloride, 0.25-20% of potassium chloride, 1-3% of borax and 1-5% of sizing agent. The preparation method of the phase change material comprises the following steps: A, heating water in the components to 60-70 DEG C, and then adding sodium sulfate to evenly stir, so as to obtain a sodium sulfate solution; B, respectively adding the ammonium chloride, the potassium chloride and borax to the sodium sulfate solution in the step A, evenly stirring, and controlling the temperature of the solution at 60-70 DEG C; C, adding the sizing agent to the solution in the step B, evenly stirring, and filling into a plastic container to store when the temperature of the solution is controlled at 50-60 DEG C. The cold-chain transportation phase change material disclosed by the invention is used for maintaining long soaking time at 2-8 DEG C during cold chain transportation, and the quality of cold chain distribution of drugs, vaccines, blood products and medical devices is ensured.

Description

technical field [0001] The invention relates to a phase change material for cold chain transportation; in particular, the invention relates to a phase change material for cold chain transportation with a phase change temperature of 2-8°C and a preparation method thereof. Background technique [0002] Phase change materials refer to substances that change shape with temperature changes and can provide internal latent heat. The process of phase change materials changing from solid to liquid or from liquid to solid is called a phase change process. At this time, the phase change material will absorb or release A large amount of latent heat, so phase change materials are of great significance as energy storage in the fields of energy saving and temperature control. [0003] With the high development of China's cold chain logistics, especially the specialized cold chain logistics of medicine and vaccines, the use of phase change materials in cold chain transportation has increasi...

AI Technical Summary

Problems solved by technology

[0004] The current cold chain transportation of medicines, vaccines, blood products and medical devices usually relies on water as raw material to make ice boxes, and some organic materials are also used as raw materials. It cannot effectively solve the transportation problems of low temperature in winter and high temperature in summer

At present, organic materials are used as raw materials to prepare phase-change material ice boxes on the market, which has major safety hazards, is easy to burn, and is easy to leak. Moreover, due to the low latent heat of phase-change material phase change, the performance is unstable, and the use effect is not good, which will affect medicines. , the quality of cold chain distribution of vaccines, blood products and medical devices

Images