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Phase-change energy-storage temperature-regulation foam concrete and preparation method thereof

A technology of foam concrete and phase change energy storage, which is applied in the field of building materials, can solve the problems of small heat capacity, restrictions on promotion and use, poor heat storage, etc., and achieve the effect of increasing heat storage capacity and excellent fire safety

Inactive Publication Date: 2015-05-27
建筑材料工业技术监督研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because foam concrete is light and porous, it also has the disadvantages of small heat capacity and poor heat storage when applied to building envelopes, resulting in poor indoor thermal comfort, which restricts its further promotion and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Raw materials: 90 parts of ordinary Portland cement, 10 parts of class II fly ash, 30 parts of expanded perlite-based phase change lightweight aggregate, 0.3 parts of fiber, 0.2 parts of polycarboxylate superplasticizer, hydroxypropyl methylcellulose 0.15 parts of xanthan gum (weight ratio 1:2), 0.3 parts of lithium carbonate, 0.3 parts of polyvinyl alcohol, 1.5 parts of sodium stearate, 9 parts of hydrogen peroxide, and 40 parts of mixing water.

[0076] The preparation method of expanded perlite-based phase-change lightweight aggregate: mix the expanded perlite dried at 80 degrees Celsius for 24 hours with molten liquid n-octadecane in a mass ratio of 50:50, then place it in a vacuum reactor, stir and Heat the material to ensure that the temperature in the reactor is higher than the melting point of the phase change material, turn on the vacuum pump, vacuumize for 10 minutes under a negative pressure of 0.08-0.1MPa, deflate, continue to vacuumize and deflate, and cycle...

Embodiment 2

[0083] Raw materials: 80 parts of ordinary Portland cement, 20 parts of Class I fly ash, 20 parts of expanded vermiculite-based phase-change lightweight aggregate, 0.4 parts of fiber, 0.2 parts of polycarboxylate superplasticizer, hydroxypropyl methylcellulose And xanthan gum (weight ratio 1:2) 0.2 parts, calcium chloride 0.3 parts, redispersible latex powder 0.6 parts, potassium stearate 1.5 parts, hydrogen peroxide 7.5 parts, mixing water 38 parts.

[0084] The preparation method of expanded vermiculite-based phase-change lightweight aggregate: mix the expanded vermiculite dried at 80 degrees Celsius for 24 hours with molten liquid polyethylene glycol 800 at a mass ratio of 45:55, place it in a vacuum reactor, and stir And heat the material to ensure that the temperature in the reactor is higher than the melting point of the phase change material, turn on the vacuum pump, vacuumize for 10 minutes under a negative pressure of 0.08-0.1MPa, deflate, continue to vacuumize and def...

Embodiment 3

[0088] Raw materials: 70 parts of ordinary Portland cement, 30 parts of class II fly ash, 45 parts of ultra-light ceramsite-based phase change lightweight aggregate, 0.5 parts of fiber, 0.3 parts of water reducer, hydroxypropyl methylcellulose and yellow 0.25 parts of raw gum (weight ratio 1:2), 0.2 parts of anhydrous sodium sulfate, 1.2 parts of vinyl acetate-ethylene copolymer emulsion, 0.2 parts of silicone waterproofing agent, 6 parts of hydrogen peroxide, and 32 parts of mixing water.

[0089] The preparation method of ultra-light ceramsite-based phase-change lightweight aggregate: mix ultra-light ceramsite and molten liquid n-dodecyl alcohol in a mass ratio of 60:40 after drying at 80 degrees Celsius for 24 hours, and then place it in a vacuum reactor. Stir and heat the material to ensure that the temperature in the reactor is higher than the melting point of the phase change material, turn on the vacuum pump, vacuumize for 10 minutes under a negative pressure of 0.08-0.1...

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Abstract

The invention discloses a phase-change energy-storage temperature-regulation foam concrete and a preparation method thereof, wherein the phase-change energy-storage temperature-regulation foam concrete comprises the following components in parts by weight: 70-100 parts of cement, 0-30 parts of fly ash, 10-50 parts of phase-change lightweight aggregate, 0-0.6 part of fiber, 0.2-0.4 part of water reducing agent, 0.1-0.3 part of cell regulator, 0.1-0.3 part of early strength agent, 0-1.5 parts of reinforcing agent, 0-3 parts of waterproof agent, 2-9 parts of chemical foaming agent and 25-40 parts of water. Therefore, the phase-change energy-storage temperature-regulation foam concrete has strong heat storage capacity and a temperature regulation function.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a phase-change energy storage temperature-regulating foam concrete and a preparation method thereof. Background technique [0002] In the development of human society for thousands of years, most of the time, passive means are used to adjust the indoor thermal environment, such as passively using solar energy for heating in winter, and using natural ventilation for air conditioning in summer. The common feature of passive regulation is to rely on the temperature regulation characteristics of the building envelope itself and make full use of renewable natural energy to improve the indoor thermal environment. Most of these traditional buildings are built with heavy materials, which have strong heat storage capacity and high thermal inertia, which can effectively suppress indoor temperature fluctuations, making them warm in winter and cool in summer, such as the kiln dw...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/02C04B18/08C04B16/06
CPCY02W30/91
Inventor 迟碧川李应全扈士凯王明轩陈志纯朱立德段策王笑帆陈嘉宇曹可谷冰莹
Owner 建筑材料工业技术监督研究中心
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