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A kind of phase change heat insulation material and preparation method thereof

A technology of heat insulation materials and phase change materials, applied in the direction of heat exchange materials, chemical instruments and methods, sustainable manufacturing/processing, etc., can solve problems involving less application fields, achieve effective heat insulation and wide application Foreground, the effect of delaying the heat transfer process

Active Publication Date: 2021-06-22
中国人民解放军92228部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research on phase change materials is mainly in the research of preparation process and material properties, and less involved in the application field

Method used

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  • A kind of phase change heat insulation material and preparation method thereof
  • A kind of phase change heat insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Preparation of Phase Change Thermal Insulation Material

[0016] The core material 1 was prepared by physical blending according to the ratio of 70% phase change paraffin + 30% cetyl alcohol. Heat the prepared core material 1 at a certain temperature, and after it reaches a certain viscosity, follow the figure 1 As shown in the schematic diagram, it is poured into the polyurethane foam material 2, and finally it is sealed with a polyurethane potting compound 3 filled with alumina fibers.

Embodiment 2

[0017] Example 2: Practical application effect of phase change heat insulation material

[0018] The prepared phase-change thermal insulation material was attached to the surface of the outdoor box, and compared with the commercial polyurethane thermal insulation foam material, the temperature change curve of the box is as follows: figure 2 shown. From figure 2 It can be seen from the figure that the thermal insulation effect of the test box using phase change thermal insulation foam material is obviously better than that of the control box using ordinary thermal insulation foam. At 50°C, the temperature of the control box was basically stable at about 40°C at 80 minutes, and at about 43°C at 130 minutes. Comparing the temperature curves of the test box and the control box at various ambient temperatures, the final stable temperature of the test box was higher than that of the control box. The temperature of the box is 5°C to 6°C lower. And as the ambient temperature incr...

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Abstract

A phase-change thermal insulation material and a preparation method thereof. The phase-change thermal insulation material is composed of a core material, a shell material and an encapsulation material, the core material is an organic phase change material, the shell material is a reticulated foam material, and the encapsulation material is A polyurethane potting compound filled with alumina fibers. By means of physical infusion, the melted core material is directly poured into the shell material, and after it is cooled and formed, a semi-finished material is formed, and a packaging material is coated around the semi-finished material to finally obtain a phase change thermal insulation material. The phase change heat insulating material and the preparation method thereof of the present invention can improve the heat insulating effect of buildings and cold storages, block the transmission path of radiant heat, and realize the purpose of energy saving.

Description

technical field [0001] The invention belongs to the technical field of heat insulation materials, in particular to a phase change heat insulation material and a preparation method thereof. Background technique [0002] Accompanied by the strong solar radiation in summer, it has a great impact on the temperature control of buildings, metal boxes and equipment in the box exposed to the sun. The safety and reliability are reduced, so heat insulation and cooling has become a key technology to save energy and ensure the safe operation of equipment. [0003] Phase-change thermal insulation materials refer to materials that can undergo a biological phase change at a specific temperature (phase transition temperature). The molecular arrangement of the material changes rapidly between order and disorder, and is accompanied by the phenomenon of absorbing or releasing heat energy to store Or release heat, and then adjust and control the temperature of the working source or the surroun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCY02E60/14Y02P20/10
Inventor 曹京宜张海永杨延格李亮张寒露张淄孙东明
Owner 中国人民解放军92228部队
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