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Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof

A technology for composite phase change and energy storage materials, which is applied in the field of preparation of composite phase change energy storage materials with multi-level porous structure carriers and its preparation, can solve the problem of composite phase change energy storage materials that have been reported but have no multi-level porous structure carriers. and other problems, to achieve the effect of excellent heat storage performance and excellent thermal conductivity

Active Publication Date: 2022-07-08
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Composite phase-change energy storage materials with hierarchical porous structures have not been reported yet

Method used

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  • Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof
  • Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof
  • Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0044] 1. Preparation of kaolinite hierarchical porous structure carrier packaging material

[0045] (1) Proportion: According to the mass ratio of kaolinite powder, binder, surfactant and foaming agent, it is 6:20:0.135:0.808. First, an appropriate amount of binder sodium silicate (Baume degree: 50; Na 2 O / SiO 2 = 2.25), pour it into a container, add surfactant (hexadecyl trimethyl ammonium bromide CTAB) and stir evenly, pour in the weighed kaolinite powder, use a mechanical stirrer at 300 rpm Stir for 5 minutes under conditions;

[0046] (2) Foaming at room temperature: Add the weighed foaming agent (hydrogen peroxide) to the well-stirred mixture, and stir immediately. The stirring process should be as fast and sufficient as possible to avoid premature foaming, and then pour 5*5*2.5 cm 3 The mold is a semi-closed mold, preferably a mold with a cover, the surface of the cover is evenly distributed with holes, the surface area of ​​the holes accounts for 40-60% of the tota...

Embodiment 2

[0055] 1. Preparation of Kaolinite Hierarchical Porous Structure Encapsulation Materials

[0056] (1) Proportion: According to the mass ratio of kaolinite powder, binder, surfactant and foaming agent, it is 6:20:0.139:1.677. First, an appropriate amount of binder sodium silicate (Baume degree: 50; Na 2 O / SiO 2 = 2.25), pour it into a container, add surfactant (hexadecyl trimethyl ammonium bromide CTAB) and stir evenly, pour in the weighed kaolinite powder, use a mechanical stirrer at 300 rpm Stir for 5 minutes under conditions;

[0057] (2) Foaming at room temperature: Add the weighed foaming agent (hydrogen peroxide) to the well-stirred mixture, and stir immediately. The stirring process should be as fast and sufficient as possible to avoid premature foaming, and then pour 5*5*2.5 cm 3 The mold is a semi-closed mold, preferably a mold with a cover, the surface of the cover is evenly distributed with holes, the surface area of ​​the holes accounts for 40-60% of the total a...

Embodiment 3

[0066] 1. Preparation of Kaolinite Hierarchical Porous Structure Encapsulation Materials

[0067] (1) Proportion: According to the mass ratio of kaolinite powder, binder, surfactant and foaming agent, it is 6:20:0.135:0.808. First, an appropriate amount of binder sodium silicate (Baume degree: 50; Na 2 O / SiO 2 = 2.25), pour it into a container, add surfactant (hexadecyl trimethyl ammonium bromide CTAB) and stir evenly, pour in the weighed kaolinite powder, use a mechanical stirrer at 300 rpm Stir for 5 minutes under conditions;

[0068] (2) Foaming at room temperature: Add the weighed foaming agent (hydrogen peroxide) to the well-stirred mixture, and stir immediately. The stirring process should be as fast and sufficient as possible to avoid premature foaming, and then pour 5*5*2.5 cm 3 The mold is a semi-closed mold, preferably a mold with a cover, the surface of the cover is evenly distributed with holes, the surface area of ​​the holes accounts for 40-60% of the total a...

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Abstract

The invention discloses a hierarchical pore structure carrier composite phase change energy storage material and a preparation method thereof. According to the composite phase change energy storage material, silicate mineral powder is used as a main raw material, a binder, a surfactant, a foaming agent and a heat conduction modifier are added, a hierarchical porous silicate mineral carrier is obtained through normal-temperature foaming and heat treatment, and a phase change material is loaded through the dipping process to obtain the novel composite phase change energy storage material. The preparation method comprises the following steps: firstly, preparing a foam mineral material carrier with a hierarchical pore structure, and then preparing the hierarchical pore structure carrier composite phase change energy storage material. The hierarchical pore structure composite phase change material has the advantages of large heat storage capacity, wide phase change temperature range, excellent packaging performance, good chemical stability, strong leak-proof capability, no supercooling phenomenon or low supercooling degree, good cycle stability, cheap and easily available raw materials, green and environment-friendly production process, and suitableness for industrial production and commercial use.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a composite phase-change energy storage material prepared by using silicate minerals as main raw materials for a multi-level porous structure carrier and a preparation method thereof. Background technique [0002] In recent years, energy and the environment have been areas of focus for society. In order to solve the problem of energy shortage, the development of high-efficiency, energy-saving and environmentally friendly energy storage technology has become the focus of research in the field of materials and engineering. Efficient energy storage technology can relieve the global energy pressure and improve the efficiency of energy utilization. After years of development of energy storage technology, a variety of energy storage and discharge technologies have been designed and developed in different application fields, involving thermal energy, electrical energy, ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06C09K5/14
CPCC09K5/063C09K5/14Y02E70/30Y02E60/14
Inventor 高欢张浩旻
Owner CHENGDU UNIVERSITY OF TECHNOLOGY