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Building phase change energy storage insulating powder and preparation method thereof

A technology of phase change energy storage and thermal insulation powder, which is applied in the field of building energy-saving thermal insulation materials, can solve the problems of high production cost of phase change materials, influence on the popularization and use of phase change materials, incompatibility and other problems, and achieve short production technology and easy implementation and control, beneficial to the effect of industrialized production

Inactive Publication Date: 2013-05-22
豫王建能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microcapsule technology solves the leakage problem of phase change materials, but the use of thick wall materials tends to reduce heat transfer efficiency, and the production cost of microcapsule phase change materials is high and the process is complicated
[0006] Therefore, at present, phase change materials are widely used in the field of construction, but in the specific use process, there are defects such as incompatibility, precipitation, leakage, and reduced heat transfer efficiency, which affect the promotion of phase change materials in the field of building energy-saving materials. use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Add 50 parts of 30# paraffin, 20 parts of lauric acid, and 10 parts of palmitic acid into the FCH500 pressure reactor. After the phase change material is completely melted, add 1 part of fumaric acid and 1 part of styrene-maleic anhydride, pressurize the reactor to 0.8 MPa and react for 30 minutes, then release the pressure to obtain a modified organic phase change material;

[0037] 2) Add 15 parts of calcium formate, 10 parts of sodium sulfate, and 0.2 parts of sodium hydroxide to the modified organic phase change material obtained in step 1) at 60-80 ° C and a stirring speed of 800 rpm, and stir for 10 minutes. Disperse evenly, unload and cool to room temperature;

[0038] 3) Crush the cooling material obtained in step 2), mix it with 2 parts of polyvinyl alcohol rubber powder and 1 part of carboxymethyl starch, and send it to the powder refiner. Physical adsorption and chemical connection occur on the surface of the powder, and the building phase change energy s...

Embodiment 2

[0041] 1) Add 40 parts of 58# paraffin and 30 parts of n-decanoic acid into the FCH500 pressure reactor. The paddle adopts the combined type of turbine and scraper. Under the condition of 60-80°C, the stirring speed is 100rpm, stirring for 10 minutes, and the phase changes After the material is completely melted, add 1 part of styrene-maleic anhydride, pressurize the reactor to 0.8MPa and react for 30 minutes, then release the pressure to obtain a modified organic phase change material;

[0042]2) Add 5 parts of sodium sulfate, 10 parts of alum, and 0.2 parts of sodium hydroxide to the modified organic phase change material obtained in step 1) at 60-80 ° C and a stirring speed of 800 rpm, stir for 5 minutes, and disperse Evenly, unload and cool to room temperature;

[0043] 3) Crush the cooling material obtained in step 2), mix it with 1 part of vinyl acetate-vinyl ester rubber powder, and 3 parts of soluble puffed starch, and then send it to the powder refiner. The surface o...

Embodiment 3

[0046] 1) Add 25 parts of myristic acid, 25 parts of palmitic acid, and 20 parts of butyl stearate into the FCH500 pressure reactor. The paddle adopts the combined type of turbine and scraper, and the stirring speed is 100rpm under the condition of 60-80°C , stir for 10 minutes, add 1 part of maleic anhydride after the phase change material is completely melted, pressurize the reactor to 0.8MPa and react for 30 minutes, release the pressure, and obtain a modified organic phase change material;

[0047] 2) Add 5 parts of sodium sulfate, 3 parts of potassium chloride, 2 parts of calcium chloride, and 0.2 parts of sodium hydroxide to the modified organic phase change material obtained in step 1) at 60-80 ° C and a stirring speed of 800 rpm In the middle, the stirring time is 10 minutes, the dispersion is uniform, the material is unloaded, and cooled to room temperature;

[0048] 3) Crush the cooling material obtained in step 2), mix it with 3 parts of vinyl acetate-vinyl ester ru...

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Abstract

The invention discloses building phase change energy storage insulating powder and a preparation method thereof. The building phase change energy storage insulating powder is characterized by comprising the following components in parts by weight: 70-80 parts of an organic phase change material, 10-25 parts of a dispersing agent, 3-5 parts of water-soluble polymer powder, 1-2 parts of a modifier and 0.1-0.3 part of an acidifying or alkalizing agent. According to the modifier and the dispersing agent, the organic phase change material is changed into the powder type phase change energy storage insulating powder which can be rapidly dispersed in water through pressure reaction and mechanical chemical bridging, the powder can be added and used in concrete, mortar, putty, coatings and other building materials, the indoor environmental temperature can be induced, and the heat is continuously absorbed or released so as to regulate the temperature. The production process of the product is shortened, continuous operation can be performed, and the method is easy to implement and control and contributes to industrial production.

Description

technical field [0001] The invention relates to the field of building energy-saving thermal insulation materials, in particular to a phase-change energy storage thermal insulation powder that can be used in building materials and a preparation method thereof. Background technique [0002] According to the experience of developed countries, the total energy consumption of buildings accounts for about one-third of the total energy consumption of the society. my country's economy is developing rapidly, but the development of energy is relatively lagging behind. One of the best ways to solve energy shortages is to save energy. The use of various energy-saving building materials in buildings can improve the heat insulation effect of buildings on the one hand and reduce the energy consumption of heating and air conditioning; on the other hand, it can greatly improve the living and working environment of building users. Therefore, vigorously developing and utilizing various high-qu...

Claims

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Application Information

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IPC IPC(8): C09K5/06
Inventor 陈庆曾军堂
Owner 豫王建能科技股份有限公司
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