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
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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

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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[0018] Example 1

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

[0020] (1) Preparation of amphiphilic polymer: Weigh 2g of methacrylic acid, 7g of octadecyl methacrylate and dissolve in benzophenone, add 0.01g of sodium persulfate, and heat to 60℃ 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: take 1 g of the amphiphilic polymer prepared in step (1) and 0.1 g of sodium hydroxide and dissolve them in pure water to configure the water phase. After heating and dissolving 1 g of polyethylene glycol, Add it to the water phase at an emulsification rate of 2000r / s, and use a particle size detector to monitor the particle size of the emulsion in real time. When the particle size reaches 20nm-100μm, stop emulsification to obtain a phase change material emulsion.

[00...

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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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