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Preparation method of phase-change material emulsion

A technology of phase change materials and emulsions, applied in heat exchange materials, chemical instruments and methods, sustainable manufacturing/processing, etc., can solve problems such as not fundamentally improving the stability of phase change material emulsion particles

Active Publication Date: 2018-05-08
GUANGDONG JUHANG INST FOR ADVANCED MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the polymerizable emulsifier in the patent of the present invention is polymerized after emulsification, which essentially forms a capsule wall to protect the emulsion, and does not fundamentally improve the stability of the phase change material emulsion particles

Method used

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  • Preparation method of phase-change material emulsion
  • Preparation method of phase-change material emulsion
  • Preparation method of phase-change material emulsion

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Embodiment 1

[0019] A preparation method of phase change material emulsion, comprising the following steps:

[0020] (1) Preparation of amphiphilic polymer: Weigh 2 g of methacrylic acid, dissolve 7 g of octadecyl methacrylate in benzophenone, add 0.01 g of sodium persulfate, and heat up to 60 ° C under stirring to initiate polymerization After reacting for 5 hours, add 10 g of methanol to terminate the reaction, filter, wash, and dry to obtain a white polymer;

[0021] (2) Preparation of Phase Change Material Emulsion: Dissolve 1g of the amphiphilic polymer prepared in step (1) and 0.1g of sodium hydroxide in pure water to form an aqueous phase. After dissolving 1g of polyethylene glycol in temperature, Add it into the water phase at an emulsification rate of 2000r / s, use a particle size detector to monitor the particle size of the emulsion in real time, stop emulsification when the particle size reaches 20nm-100μm, and obtain a phase change material emulsion.

[0022] Table 1

[0023] ...

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Abstract

The invention relates to the field of preparation of a phase-change material, and particularly discloses a preparation method of a phase-change material emulsion. The preparation method of the phase-change material emulsion comprises the following steps: preparing an amphiphilic polymer and then preparing the phase-change material emulsion by taking the amphiphilic polymer as a surfactant. The preparation method of the phase-change material emulsion is energy-saving and efficient, industrialized implementation is facilitated, and the prepared phase-change material emulsion has stable performance, uniform grain size, high phase-change enthalpy and small supercooling degree and can be widely applied to the fields of heat mediums of functional thermal fluid and refrigeration systems.

Description

technical field [0001] The invention relates to the field of phase change material preparation, in particular to a preparation method of phase change material emulsion. Background technique [0002] Phase change material (PCM-Phase Change Material) refers to a substance that changes its state of matter and provides latent heat with temperature changes. The process of changing physical properties is called a phase change process. At this time, the phase change material will absorb or release a large amount of latent heat. Taking the solid-liquid phase change as an example, when heated to the melting temperature, a phase change from solid to liquid occurs. During the melting process, the phase change material absorbs and stores a large amount of latent heat; when the phase change material cools, the stored Heat must be dissipated to the environment within a certain temperature range, and a reverse phase change from liquid to solid is carried out. During these two phase transi...

Claims

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Application Information

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IPC IPC(8): C09K5/06C08F220/18C08F220/06
CPCC08F220/18C09K5/063C08F220/1818C08F220/06Y02P20/10
Inventor 唐孝芬邓佳琪朱永祥陈旭东许宏武杨军明汤立文赖清泉
Owner GUANGDONG JUHANG INST FOR ADVANCED MATERIALS CO LTD
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