Composite inorganic hydrous salt phase-change material and preparation method of inorganic composite phase-change plate

A technology of inorganic hydrated salts and phase change materials, applied in the field of composite building decoration materials, can solve the problems of supercooling and application of bound solid-liquid phase change materials, etc., and achieve the effects of good toughness, small degree of supercooling and good stability

Active Publication Date: 2016-01-27
上海唐盾材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These shortcomings have largely restricted the application of solid-liquid phase change materials in actual production.
[0011] 3. In the process of cooling solid-liquid phase change materials from liquid to solid, there is always the problem of overcooling, which leads to the inability to crystallize in time within the required temperature range

Method used

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  • Composite inorganic hydrous salt phase-change material and preparation method of inorganic composite phase-change plate
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preparation example Construction

[0035] Based on the above-mentioned composite inorganic hydrated salt phase change material, the present invention also provides a high-performance inorganic composite phase change plate applied to interior decoration, and its preparation method is as follows: figure 1 Shown, specifically include the following:

[0036] Step S1, providing pre-configured raw materials for composite inorganic hydrated salt phase change materials, the weight ratio of the raw materials is: 100 parts of magnesium oxide powder, 10-30 parts of clay powder, 15-25 parts of slag powder, Al 2 o 3 6-25 parts of filler, 45-60 parts of compound sulfate, 10-32 parts of sawdust, 0.5-1 part of compound phosphate, 5-7 parts of perlite, and 75-85 parts of water. Its ratio is as follows figure 2 shown.

[0037] Phase change materials are a class of materials that can absorb heat (cold) from the environment during their own phase transition, and release heat (cold) to the environment when needed, thereby achie...

Embodiment 1

[0060] An inorganic composite phase change board, comprising the following raw materials in parts by weight: 100 parts of magnesium oxide powder, 20 parts of laterite powder, 5 parts of attapulgite, 10 parts of fly ash, 10 parts of kaolin, 60 parts of composite sulfate, wood chips 30 parts, 0.5 parts of citric acid, 0.5 parts of calcium dihydrogen phosphate, 75 parts of water, and 0.6 parts of foaming agent.

[0061] Mix the raw materials of the above-mentioned inorganic composite phase change plate (except the foaming agent) together, then add water (the ratio of the weight of the added water to the weight of the magnesium oxide powder is 75:100) and stir until it is uniformly formed When mixing the slurry, when stirring, the stirring time is controlled within 12 to 18 minutes according to the characteristics of the slurry, and the stirring temperature of the slurry is controlled above 10°C and below 25°C. Then use a foaming machine to make a stable foam from the foaming agen...

Embodiment 2

[0067] An inorganic composite phase change plate, comprising the following raw materials in parts by weight: 100 parts of magnesium oxide powder, 20 parts of laterite powder, 5 parts of attapulgite, 10 parts of fly ash, 10 parts of bauxite, 5 parts of kaolin, compounded 60 parts of sulfate, 30 parts of wood chips, 0.5 parts of citric acid, 0.5 parts of calcium dihydrogen phosphate, 80 parts of water, and 0.6 parts of foaming agent.

[0068] The inorganic composite phase change plate obtained according to Example 2 has a thickness of 9mm and a density of 1.2g / cm 3 , The dry flexural strength is 33.5mPa, the wet flexural strength is 29.5mPa, and the softening coefficient is 0.88. After soaking in water for three months, the softening coefficient is 0.87.

[0069]Using Example 2 for indoor partition boards, its excellent phase-change energy storage performance greatly reduces the energy consumption of heating and air-conditioning equipment, and controls the humidity well to ensur...

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Abstract

The invention relates to the field of composite building and ornament materials, in particular to a composite inorganic hydrous salt phase-change material and a preparation method of an inorganic composite phase-change plate. The preparation method comprises the steps that the pre-configured composite inorganic hydrous salt phase-change material raw materials comprising 100 parts of magnesia powder, 10-30 parts of clay powder, 15-25 parts of slag powder, 6-25 parts of Al2O3 padding, 45-60 parts of composite sulfate, 10-32 parts of wood flour, 0.5-1 part of composite phosphate, 5-7 parts of perlite, 75-85 parts of water and 0.2-1 part of citric acid are provided; the raw materials are mixed and evenly stirred into mixed slurry; the mixed slurry is compounded with glass fiber cloth to form an inorganic composite heat accumulation panel. The inorganic composite phase-change plate has the advantages of being low in weight and high in strength, saving energy, preserving moisture, resisting water, being good in toughness, absorbing sound, being environmentally friendly and high in ornamental performance and the like, meanwhile, has the high energy storage density and low degree of supercooling, is free of layering and good in stability, has impermeability, and does not corrode metal.

Description

technical field [0001] The invention relates to the field of composite building decoration materials, in particular to a preparation method of a composite inorganic hydrated salt phase change material and an inorganic composite phase change plate. Background technique [0002] At present, a large part of the total energy consumption of society is used in the construction field. Among them, 70% is consumed by heating and air conditioning. With the shortage of energy and non-renewable resources, the demand for new energy utilization and improvement of equipment efficiency, it is necessary to find suitable passive energy-saving building materials to achieve the purpose of using less or no equipment. Now a large number of building decoration materials such as exterior wall panels, interior wall panels, floors, ceilings, heating (cold) equipment such as air conditioners, floor heating, ground source heat, boiler water heaters, etc., all have problems in different situations. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10
Inventor 沃成昌
Owner 上海唐盾材料科技有限公司
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