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Organic phase change thermal storage material and preparation method thereof

A heat storage material and organic phase technology, which is applied in the field of composite materials, can solve the problems of poor thermal conductivity of organic phase change heat storage materials, and achieve the effect of improving the cold and heat storage function, not easy to burn, and stable performance

Inactive Publication Date: 2015-11-04
SHANGHAI AIR PAQ CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of poor thermal conductivity of organic phase change heat storage materials, and to enhance the heat transfer capacity of organic phase change materials by adding expandable graphite

Method used

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  • Organic phase change thermal storage material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the preparation process of organic phase change heat storage materials is as follows:

[0033] Take 50g of expandable graphite (the expansion rate is 150ml / g, the particle size is 70 mesh), place it in a vacuum drying oven with a vacuum degree of 0.1pa, and the vacuum drying time is 24 hours, then put it into a 100ml stainless steel container, and finally place Baked at 600°C for 3 hours in a muffle furnace.

[0034] Take 950g of polyethylene organic phase change material, place it in a 3000ml container, place the container on an electric heating platform with a heating power of 1KW, and place a temperature measuring element in the container to monitor the heating process. Temperature profile of organic phase change materials. When the temperature is 20°C higher than the melting point, reduce the heating power appropriately to slow down the rate of temperature rise. When the temperature is 50°C higher than the melting point, keep the tempera...

Embodiment 2

[0037] Such as figure 1 As shown, the preparation process of organic phase change energy storage materials is as follows:

[0038] Take 100g of expandable graphite (the expansion rate is 200ml / g, the particle size is 60 mesh), put it in a vacuum drying oven, the vacuum degree is 0.1pa, and the vacuum drying time is 32 hours, then put it into a 100ml stainless steel container, and finally place it Baked in a muffle furnace at 700°C for 3 hours.

[0039] Take 900g of stearic acid organic phase change material, place it in a 3000ml container, place the container on an electric heating platform with a heating power of 1KW, and place a temperature measuring element in the container to monitor the temperature during the heating process. , the temperature condition of the organic phase change material. When the temperature is 20°C higher than the melting point, reduce the heating power appropriately to slow down the rate of temperature rise. When the temperature is 50°C higher than...

Embodiment 3

[0042] Such as figure 1 As shown, the preparation process of organic phase change energy storage materials is as follows:

[0043] Take 40g of expandable graphite (the expansion rate is 250ml / g, the particle size is 40 mesh), place it in a vacuum drying oven, the vacuum degree is 0.1pa, and the vacuum drying time is 18 hours, then put it into a 100ml stainless steel container, and finally place Calcined at 650°C for 4 hours in a muffle furnace.

[0044] Take 960g of n-eicosane organic phase change material, place it in a 3000ml container, place the container on an electric heating platform with a heating power of 1KW, and place a temperature measuring element in the container to monitor the heating process , the temperature conditions of organic phase change materials. When the temperature is 20°C higher than the melting point, reduce the heating power appropriately to slow down the rate of temperature rise. When the temperature is 50°C higher than the melting point, keep th...

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Abstract

The invention provides an organic phase change thermal storage material and its preparation method. The material comprises the following ingredients, by weight, 2-10% of expanded graphite and 90-98% of an organic phase change material. Through the preparation method, the phase change material obtained has low degree of supercooling, stable performance and relatively strong heat-transfer capability. In a heating container, the organic phase change material is heated to be liquefied; and after heating, a certain proportion of expansible graphite is added and the mixture is continuously stirred so as to finally obtain the stable, reliable composite organic phase change thermal storage material.

Description

technical field [0001] The invention relates to an organic phase change heat storage material and a preparation method thereof, belonging to the technical field of composite materials. Background technique [0002] Today's environmental problems have attracted great attention from all aspects of society. Energy-saving and environmental protection technology is a strategic task for economic and social development, and an important link to promote sustainable economic development, build a harmonious society, and realize the harmonious development of man and nature. [0003] Phase change energy storage technology is an important technology to improve energy utilization efficiency. A phase change energy storage material refers to a material that can be used for energy storage by utilizing a large amount of heat energy that it absorbs (releases) when its state changes. A new type of energy-saving material for the purpose of temperature adjustment and constant temperature by adju...

Claims

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Application Information

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IPC IPC(8): C09K5/06
Inventor 聂会平谢荣健
Owner SHANGHAI AIR PAQ CO LTD
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