Method for preparing high polymer material cold accumulation agent

Abstract

The invention discloses a method for preparing a high polymer material cold accumulation agent. The method includes the following technological steps that firstly, polymers with hydrophilic groups contained in the molecular structure are prepared into an aqueous solution with the concentration of 0.32-0.89%; secondly, three monomers of acrylic acid, hydroethyl methacrylate and maleic anhydride are added into the aqueous solution prepared in the first step so that a mixed solution can be prepared; thirdly, a diacrylic glycolester cross-linking agent with the total mass of the three monomers being 0.08-0.23% is added into the mixed solution prepared in the second step; fourthly, potassium peroxydisulfate initiators with the total mass of the three monomers being 0.05-0.45% is added into the solution obtained in the third step; fifthly, a high polymer material prepared in the fourth step is mixed with water, mixtures are placed, and the cold accumulation agent is obtained. The prepared cold accumulation agent is free of toxin, smell, pollution and corrosiveness, freezing and thawing phase change latent heat is large, cold accumulation time is long, water absorbing speed is high, water absorbing amount is large, cost is low, and various different application requirements can be met by changing chemical composition.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a method for preparing a cool storage agent of a polymer material. Background technique [0002] With the rapid development of human society, people have higher and higher requirements for the original taste of food, long-distance transportation of a large number of fresh food and native products, and small batch, multi-variety, multi-frequency, short-term delivery requirements Therefore, in recent years, the refrigerated transportation technology in the cold chain has developed rapidly. [0003] Refrigerated transportation is mainly divided into two categories: mechanical refrigerated transportation and cold storage transportation. If long-distance transportation can be realized, the cost of the latter will be much lower than that of the former, but its core technology is to provide a cold storage agent with a long cold storage time. There are many types of cooling agent...

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to design a method for preparing a cool storage agent of polymer materials, to solve the problems of short cold storage time, slow water absorption speed, small water absorption, high cost, and some of the cool storage agents prepared by the existing method contain harmful Substance and phase transition temperature range are narrow and other deficiencies; and the method designed for the preparation of polymer material cool storage agent, the prepared cool storage agent is non-toxic, tasteless, non-polluting and non-corrosive, and the freeze-thaw phase change latent heat Large, long cold storage time, fast water absorption, large water absorption, and low cost, can meet various application requirements by changing the chemical composition