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Phase change building material product with temperature control performance and preparation method of phase change building material product

A phase change material and phase change technology, applied in the field of building materials, can solve the problems of phase change materials such as easy leakage, damage, and leakage of phase change materials, achieving high strength and ensuring safety

Inactive Publication Date: 2021-09-21
CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the impregnation method and direct mixing method are simple in preparation process, phase change materials are easy to ooze out, so they are rarely used in actual production.
Encapsulation methods include micro-encapsulation and macro-encapsulation. Macro-encapsulation affects the breathing performance of gypsum boards. If the encapsulation is not perfect, flammable damage will occur and the scene of leakage. However, micro-encapsulation is generally in the form of microcapsules, although microcapsules The phase change material has been encapsulated, but when the phase change microcapsules are mixed with gypsum and water, friction or shear force will be generated, and the physical action will also damage the phase change microcapsules, resulting in leakage of the phase change material

Method used

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  • Phase change building material product with temperature control performance and preparation method of phase change building material product
  • Phase change building material product with temperature control performance and preparation method of phase change building material product
  • Phase change building material product with temperature control performance and preparation method of phase change building material product

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Experimental program
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Effect test

Embodiment 1

[0069] The phase-change microcapsules are prepared according to the patent ZL200810103749.3 paragraphs [0009] to [0015] to prepare microcapsules of inorganic phase-change energy storage materials by the gel sol method; the difference is that the phase-change microcapsules prepared by the present application are Single-layer phase-change microcapsules; the phase-change microcapsules are a solution with a solid content of 35%; the enthalpy is about 120J / g; the average particle size is 5μm;

[0070] According to the above formula, fully mix the plaster of paris, modified starch and chopped glass fiber to form a dry powder;

[0071] The phase transition temperature of the phase change microcapsules is 20-25°C, in an environment of 15°C;

[0072] Mix naphthalene-based water reducer, sodium lauryl sulfate and 5 parts of water to form a wet material;

[0073] Fully mix the dry powder material, phase change microcapsule solution, wet material and 70 parts of water to form a slurry; ...

Embodiment 2

[0076] The phase-change microcapsules are prepared as microcapsules of organic phase-change energy storage materials according to paragraphs [0009] to [0015] of patent ZL200810103749.3; the difference is that the phase-change microcapsules prepared by the present application are single phase-change microcapsules layer; the phase-change microcapsules are a solution with a solid content of 35%; the enthalpy is about 120J / g; the average particle size is 5μm;

[0077] According to the above formula, fully mix the plaster of paris, modified starch and chopped glass fiber to form a dry powder;

[0078] The phase transition temperature of the phase change microcapsules is 20-25°C, in an environment of 15°C;

[0079] Mix naphthalene-based water reducer, sodium lauryl sulfate and 5 parts of water to form a wet material;

[0080] Fully mix the dry powder material, phase change microcapsule solution, wet material and 70 parts of water to form a slurry;

[0081] The slurry is placed in ...

Embodiment 3

[0083] The phase change microcapsules are prepared by combining the in-situ polymerization method and the sol-gel method in Example 3 of the patent ZL200810103749.3 to prepare microcapsules with double-layer composite functional shells encapsulating organic phase change energy storage materials; the phase change microcapsules are powder , the enthalpy value is about 120J / g; the average particle size is 5μm;

[0084] According to the above formula, fully mix the plaster of paris, modified starch and chopped glass fiber to form a dry powder;

[0085] The phase change temperature of the phase change microcapsules is 20-25°C, and it is in an environment of 15°C; mix the phase change microcapsules with 25 parts of water, and the water temperature is 15°C, so that the phase change materials are evenly distributed in the water to form a phase change microcapsule solution ;

[0086] Mix naphthalene-based water reducer, sodium lauryl sulfate and 5 parts of water to form a wet material...

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Abstract

The invention discloses a phase change building material product with temperature control performance and a preparation method of the phase change building material product. The preparation method comprises the following steps that before the phase change building material product with the temperature control performance is prepared and in the process of preparing a phase change microcapsule solution, a phase change microcapsule is in an environment lower than the phase change temperature, so that the phase change material is in a solid state, before the phase change building material product with the temperature control performance is prepared, the phase change microcapsules are placed in the environment with the temperature lower than the phase change temperature for a period of time so as to ensure that the phase change material is in the solid state, wherein the placement time is 5 hours to 1 month, preferably, the placement time is 20 days to 8 days, preferably, the placement time is 2 days to 12 hours; and preferably, the temperature of the environment lower than the phase change temperature is 5 DEG C or above lower than the phase change temperature. According to the preparation method, leakage of the phase change material is avoided, so that the obtained phase change building material product can adjust the indoor temperature and has higher strength.

Description

technical field [0001] This article relates to the field of building material products, especially a phase change building material product with temperature control performance and a preparation method thereof. Background technique [0002] As a new type of wall energy-saving technology, phase change energy storage wall can not only improve the thermal insulation performance of the wall, but also improve the heat storage and heat storage performance of the wall, and improve the indoor thermal environment of the building, but the phase change energy storage The material is encapsulated in the building material product, and it should be ensured that the phase change building material product does not leak out of the phase change energy storage material during use, so as to realize the application of the phase change energy storage material in the field of building materials. Common building material products in the field of building materials include, but are not limited to, g...

Claims

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Application Information

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IPC IPC(8): B28B17/02B28B1/00B28B17/00C04B28/14C04B20/00
CPCB28B17/02B28B1/008B28B17/0036C04B28/145C04B20/0008C04B2111/0062C04B2201/50C04B2103/0071C04B24/38C04B14/42C04B2103/302C04B24/16
Inventor 李帆陈红霞张赫丛宇
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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