A low-temperature composite phase-change energy storage material, its preparation method and application

An energy storage material and composite phase change technology, applied in the field of phase change materials, can solve problems such as difficulty in ensuring stability and easy damage of inorganic shell materials

Active Publication Date: 2021-04-23
SHENZHEN INST OF ADVANCED ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many technical problems in this method. The inorganic shell material is easily damaged, and the simple combination of microcapsules and porous materials is difficult to ensure its stability.

Method used

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  • A low-temperature composite phase-change energy storage material, its preparation method and application
  • A low-temperature composite phase-change energy storage material, its preparation method and application
  • A low-temperature composite phase-change energy storage material, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The preparation of embodiment 1 hexamethylenediamine@polystyrene-divinylbenzene microcapsules

[0058] Dissolve 25g of hexamethylenediamine in 100mL of water, add 2g of Span 80, keep the temperature at 80°C, stir at 1000r / min for 30min, and prepare 50mL of toluene to dissolve 4g of styrene and 4g of divinylbenzene. After the emulsification is complete, add In the system, dissolve 0.5g of sodium persulfate in 10g of water and add, after reacting for 6 hours, let stand, filter, and dry to obtain microcapsule powder. Gained microcapsule powder SEM photograph is as figure 1 shown.

Embodiment 2

[0059] The preparation of embodiment 2 octyldiamine@polystyrene-divinylbenzene microcapsules

[0060] Dissolve 25g of octanediamine in 100mL of water, add 2g of Span 80, keep the temperature at 80°C, stir at 1000r / min for 30min, prepare 50mL of toluene to dissolve 4g of styrene and 4g of divinylbenzene, add In the system, dissolve 0.5g of sodium persulfate in 10g of water and add, after reacting for 6 hours, let stand, filter, and dry to obtain microcapsule powder. Gained microcapsule powder SEM photograph is as figure 1 shown.

Embodiment 3

[0061] Embodiment 3 Preparation of decanediamine@polystyrene-divinylbenzene microcapsules

[0062] Dissolve 25g of decanediamine in 100mL of water, add 2g of Span 80, keep the temperature at 80°C, stir at 1000r / min for 30min, prepare 50mL of toluene to dissolve 4g of styrene and 4g of divinylbenzene, and add In the system, dissolve 0.5g of sodium persulfate in 10g of water and add, after reacting for 6 hours, let stand, filter, and dry to obtain microcapsule powder.

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Abstract

The invention relates to a low-temperature composite phase-change energy storage material, a preparation method and an application. It is specifically disclosed that it contains an energy storage material, a nucleating agent, a modifier, and a heat-conducting material, wherein the energy storage material is selected from the modified phase-change energy storage microcapsules of the present invention. In the phase-change energy storage microcapsules, the capsule material is carboxylated polystyrene-divinylbenzene, and the core material is a diamine compound. The phase-change energy-storage microcapsules of the present invention use high-enthalpy organic phase-change materials as core materials, have high enthalpy and low supercooling, and have obvious advantages over traditional inorganic phase-change materials.

Description

technical field [0001] The invention belongs to the field of phase change materials, and in particular relates to a low-temperature composite phase change energy storage material, a preparation method and an application. Background technique [0002] Thermal Interface Materials (TIM) play a key role in thermal management and are an important research branch in this discipline. Phase change energy storage material (PCM-Phase Change Material) is a kind of thermal interface material widely used, which refers to a substance that changes the state of matter and provides latent heat when the temperature remains constant. The process of changing physical properties is called a phase change process, and the phase change material will absorb or release a large amount of latent heat at this time. Phase change materials can be divided into inorganic phase change materials and organic phase change materials. Organic phase change materials have the advantages of high phase change laten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06C09K5/14
CPCC09K5/063C09K5/14Y02E70/30
Inventor 喻学锋吴列
Owner SHENZHEN INST OF ADVANCED ELECTRONICS MATERIALS
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