Constant-temperature phase change energy storage material

Abstract

The invention provides a phase change energy storage material which has the characteristics of phase change temperature of 25-28 DEG C, great potential heat, small super-cooling degree and high stability. The phase change energy storage material is at a solid state at the temperature which is lower than 25-28 DEG C; when the temperature is higher than 25-28 DEG C, the potential heat is absorbed to carry out phase change to be changed into a liquid state. Dodecanol and paraffin are used as main raw materials, and a cross-linking agent, an initiator, an emulsifying agent and a nucleating agent are used as auxiliary materials, the main raw materials are reacted with the auxiliary materials, and then carbon chain recombination happens under the effect of the initiator, a silane coupling agent, the emulsifying agent and the like to prepare the product. The phase change temperature is 25-28 DEG C and the phase change potential heat is 156-163 KJ / Kg. The phase change energy storage material has the characteristics that the phase change temperature is the room temperature, the potential heat is high and the raw materials are wide and cheap; the material is not layered and has no sediments after being repeatedly subjected to the phase change for a plurality of times; and the potential heat value is stable and the super-cooling degree is less than 1 DEG C. After the material is packaged, the material can be combined with a building wall body and the property of absorbing the potential heat enables the wall body to have the function of adjusting the temperature.

Description

technical field [0001] The invention relates to a building energy-saving material, in particular to a building wall material. By mixing or filling this material, the wall can absorb air heat when the indoor temperature is higher than 25-28°C, so as to achieve the function of temperature regulation . technical background [0002] With the development of the national economy, people have higher requirements for the comfort of the room. At the same time, the accelerated urban development has led to a rapid increase in the building area. According to statistics, building energy consumption accounts for 30% of the total energy consumption in society, and there is a continuous upward trend. Taking Guangdong as an example, because it is located in the subtropical zone, the summer temperature is as high as 35°C, and the indoor temperature is as high as 32°C. The high temperature period lasts for 5-6 months. Buildings have to use refrigeration equipment to adjust the indoor temperatu...

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Problems solved by technology

Such as Publication No. CN1927952A "Energy-saving Architectural Coatings and Preparation Method", Publication No. CN101555115A "A Phase-change Energy-saving Building Material", Publication No. CN1450141A "Heating-setting Phase-change Heat Storage Material for Building Heating and Preparation Method thereof" , the publication number is CN1462787ADE "Phase Change Energy Storage Composite Materials for Buildings and Its Preparation Method". These patents have the following defects: 1) There is no individual design for seasons and regions, the phase change temperature is high and wide, the degree of supercooling is large, and the latent heat Low, it is difficult to achieve the expected effect in practical applications; 2) Phase change materials are directly blended with inorganic building materials during preparation, and a large amount of inorganic substances will promote the degradation of organic phase change materials to failure, making phase change materials lose their application value

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