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Method for preparing phase change thermal storage-based novel energy-storing and heat-insulating mortar

A thermal insulation mortar, phase change heat storage technology, applied in the fields of building energy saving, solar energy utilization, wall insulation, and thermal storage materials, can solve the problems of limited application, easy to flow, no fixed shape, etc. Good performance and improved thermal comfort

Inactive Publication Date: 2010-03-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solid-liquid phase change materials have a disadvantage that cannot be ignored, that is, when the material changes from a solid state to a liquid phase, it has no fixed shape and is prone to flow, which greatly limits its application in architecture.

Method used

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  • Method for preparing phase change thermal storage-based novel energy-storing and heat-insulating mortar
  • Method for preparing phase change thermal storage-based novel energy-storing and heat-insulating mortar

Examples

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example 1

[0027] Example 1: 200g of expanded perlite particles with a particle diameter of 1mm to 3mm are subjected to high temperature drying treatment (drying time is 1 hour to 1.5 hours, and drying temperature is 105 ℃ to 110 ℃); then it is evacuated to vacuum degree The temperature is 0.1MPa~0.2MPa, the temperature is controlled at 50℃, 300g of capric acid melted into a liquid state is added, and the vacuum degree is kept at 0.1MPa~0.2MPa for 6min~8min, and then the air valve is opened to allow air to enter. At this time, the phase change material enters the expansion Inside the micropores of the perlite aggregate; cool the composite phase change material to normal temperature; after cooling, it is evacuated to a vacuum degree of 0.1 MPa to 0.2 MPa, the temperature is controlled at 80 ° C, and 150 g of paraffin wax that is melted into a liquid is added. Sealing material (melting point is 70℃), keep the vacuum degree of 0.1MPa~0.2MPa for 3min~4min, then open the air valve to let air i...

example 2

[0029] Example 2: 200g particle diameter is that the expanded perlite particle of 1mm~3mm is carried out high temperature drying treatment (drying time is 1 hour~1.5 hour, and drying temperature is 105 ℃~110 ℃); It is then evacuated to vacuum degree It is 0.1MPa~0.2MPa, the temperature is controlled at 50℃, 300g of lauric acid melted into a liquid state is added, and the vacuum degree is kept at 0.1MPa~0.2MPa for 6~8min, and then the air valve is opened to allow air to enter. At this time, the phase change material enters the expansion Inside the micropores of the perlite aggregate; cool the composite phase change material to normal temperature; after cooling, it is evacuated to a vacuum degree of 0.1 MPa to 0.2 MPa, the temperature is controlled at 80 ° C, and 150 g of paraffin wax that is melted into a liquid is added. Sealing material (melting point is 70℃), keep the vacuum degree of 0.1MPa~0.2MPa for 3min~4min, then open the air valve to let air in, at this time paraffin en...

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Abstract

The invention provides phase change thermal storage-based novel energy-storing and heat-insulating mortar and a preparation method thereof. The preparation method comprises the following steps: adsorbing an organic phase change material into micropores of expanded perlite through vacuum impregnation, and coating an encapsulant on the surface of phase change energy-storing aggregate through secondary vacuum impregnation; and replacing partial expanded perlite fine aggregate by the composite phase change energy-storing aggregate to prepare the energy-storing and heat-insulating mortar. The phasechange thermal storage-based novel energy-storing and heat-insulating mortar prepared does not generate macroscopic liquid phase when performing phase change, obstructs the influence of an alkaline environment on an acid phase change material, ensures better combination of the phase change material and the expanded perlite heat-insulating aggregate, has good thermal storage and heat insulation performance, can effectively improve thermal comfort of buildings, and also has the advantages of low hygroscopic coefficient and good water resistance.

Description

technical field [0001] The invention belongs to the fields of wall body heat preservation, building energy saving, solar energy utilization, and heat storage materials, and relates to a method for preparing a shaped composite phase change material. Background technique [0002] Modern buildings need to continuously improve the comfort of people's living environment, reduce the total building energy consumption, and effectively alleviate the contradiction between energy supply and demand, while the traditional thermal insulation mortar has better thermal insulation performance, but poor water resistance, and due to the high heat capacity Small, resulting in large indoor temperature fluctuations, reducing the comfort of the indoor thermal environment. [0003] During the phase transition process of substances, along with endothermic and exothermic phenomena, energy storage and release and temperature regulation and control can be realized. Close to a constant temperature and ...

Claims

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Application Information

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IPC IPC(8): C04B14/18C04B20/10C04B28/00
CPCC04B28/02C04B2111/28C04B2111/27C04B20/12
Inventor 廖晓敏张永娟张雄
Owner TONGJI UNIV
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