A kind of phase change energy storage material prepared by microemulsion method and its preparation method

Abstract

The invention discloses a phase change energy storage material prepared by using a micro-emulsion technology. Raw materials of the phase change energy storage material comprise, by weight, 40-60 partsof a phase change material, 10-20 parts of an acrylate monomer mixture, 3-5 parts of an emulsifier, 3-5 parts of an initiator, 0.2-0.4 part of an acid-base regulator, 2-3 parts of a reducing agent and 100-120 parts of distilled water. A preparation method of the phase change energy storage material comprises the following steps: taking and stirring the distilled water, the emulsifier, the initiator and the acid-base regulator, then adding a mixed liquid of the polyacrylate monomer mixture and the phase change material, and continuously performing stirring to obtain a pre-emulsion; and sequentially dropwise adding the pre-emulsion and the reducing agent into a reactor in batches at a certain temperature, and carrying out a polymerization reaction under stirring to obtain the phase change energy storage material. The phase change energy storage material with a stable structure is obtained by an acrylate monomer coating technology, and has the advantages of good dispersibility, high specific heat capacity, realization of the temperature being adjustable in a range of 20-35 DEG C, and wide application range.

Description

technical field

[0001] The invention relates to the technical field of new materials, in particular to a phase-change energy storage material prepared by a microemulsion method and a preparation method thereof. Background technique

[0002] In recent years, with the development of science and technology, phase change energy storage materials have become a very popular research topic. The main principle used is that when a substance undergoes a phase change, it absorbs or releases heat. Therefore, many energy storage materials have been developed by using this principle, which can effectively improve the indoor temperature and reduce energy consumption.

[0003] Chinese patent application CN107513408A discloses that the present invention discloses a method for preparing a phase-change energy storage material. The method deoxidizes natural acid by hydrogenation; the hydrogenation product produces even carbon number normal alkanes through sweating, and in the process of sweati...

Examples

Embodiment 1

[0039] This embodiment provides a method for preparing a phase-change energy storage material using the microemulsion method, and the specific steps are:

[0040] (1) Preparation of pre-emulsion:

[0041] 120 parts by weight of distilled water, 5 parts of emulsifier, 5 parts of initiator, and 0.4 part of acid-base regulator were added to the reaction kettle, and after stirring at a high speed for 50 minutes at room temperature, 20 parts of acrylic ester mono Add the liquid mixture and 60 parts of dodecyl alcohol phase change material liquid (if it is solid, heat it to make it melt into liquid) into the reaction kettle, and then stir it at high speed for 30 minutes, then place it in the ultrasonic container for side-by-side After stirring and ultrasonicating for 2 hours, stop stirring and ultrasonicating, take out the material, pour it into an empty bottle for sealed storage, and obtain a pre-emulsion; the high-speed stirring speed is 600rpm;

[0042] (2) Preparation of phase ch...

Embodiment 2

[0050] This embodiment provides a method for preparing a phase-change energy storage material using the microemulsion method, and the specific steps are:

[0051] (1) Preparation of pre-emulsion:

[0052] Add 100 parts by weight of distilled water, 3 parts of emulsifier, 3 parts of initiator, and 0.2 parts of acid-base regulator into the reaction kettle, and after stirring at a high speed for 40 minutes at room temperature, add 10 parts of acrylate Add the mixed liquid of the monomer mixture and 40 parts of the phase change material (if it is solid, heat it to make it melt into a liquid) into the reaction kettle, and then stir it at a high speed for 20 minutes, then place it in the ultrasonic container for stirring After ultrasonication for 1 hour, stop stirring and ultrasonication, take out the material, pour it into an empty bottle for sealed storage, and obtain a pre-emulsion; the high-speed stirring speed is 450 rpm, and the medium-speed stirring speed is 300 rpm;

[0053...

Embodiment 3

[0062] This embodiment provides a method for preparing a phase-change energy storage material using the microemulsion method, and the specific steps are:

[0063] (1) Preparation of pre-emulsion

[0064] Add 110 parts by weight of distilled water, 5 parts of emulsifier, 4 parts of initiator, and 0.4 part of acid-base regulator into the reaction kettle, and after stirring at a high speed for 45 minutes at room temperature, add 20 parts of acrylate Add the mixed liquid of the monomer mixture and 50 parts of the phase change material (if it is solid, heat it to make it melt into a liquid) into the reaction kettle, and then stir it at a high speed for 30 minutes, then place it in the ultrasonic container for stirring After ultrasonication for 1 hour, stop stirring and ultrasonication, take out the material, pour it into an empty bottle for sealed storage, and obtain a pre-emulsion; the high-speed stirring speed is 600rpm;

[0065] (2) Preparation of phase change energy storage ma...

technical field

[0001] The invention relates to the technical field of new materials, in particular to a phase-change energy storage material prepared by a microemulsion method and a preparation method thereof. Background technique

[0002] In recent years, with the development of science and technology, phase change energy storage materials have become a very popular research topic. The main principle used is that when a substance undergoes a phase change, it absorbs or releases heat. Therefore, many energy storage materials have been developed by using this principle, which can effectively improve the indoor temperature and reduce energy consumption.

[0003] Chinese patent application CN107513408A discloses that the present invention discloses a method for preparing a phase-change energy storage material. The method deoxidizes natural acid by hydrogenation; the hydrogenation product produces even carbon number normal alkanes through sweating, and in the process of sweati...

Examples

Embodiment 1

[0039] This embodiment provides a method for preparing a phase-change energy storage material using the microemulsion method, and the specific steps are:

[0040] (1) Preparation of pre-emulsion:

[0041] 120 parts by weight of distilled water, 5 parts of emulsifier, 5 parts of initiator, and 0.4 part of acid-base regulator were added to the reaction kettle, and after stirring at a high speed for 50 minutes at room temperature, 20 parts of acrylic ester mono Add the liquid mixture and 60 parts of dodecyl alcohol phase change material liquid (if it is solid, heat it to make it melt into liquid) into the reaction kettle, and then stir it at high speed for 30 minutes, then place it in the ultrasonic container for side-by-side After stirring and ultrasonicating for 2 hours, stop stirring and ultrasonicating, take out the material, pour it into an empty bottle for sealed storage, and obtain a pre-emulsion; the high-speed stirring speed is 600rpm;

[0042] (2) Preparation of phase ch...

Embodiment 2

[0050] This embodiment provides a method for preparing a phase-change energy storage material using the microemulsion method, and the specific steps are:

[0051] (1) Preparation of pre-emulsion:

[0052] Add 100 parts by weight of distilled water, 3 parts of emulsifier, 3 parts of initiator, and 0.2 parts of acid-base regulator into the reaction kettle, and after stirring at a high speed for 40 minutes at room temperature, add 10 parts of acrylate Add the mixed liquid of the monomer mixture and 40 parts of the phase change material (if it is solid, heat it to make it melt into a liquid) into the reaction kettle, and then stir it at a high speed for 20 minutes, then place it in the ultrasonic container for stirring After ultrasonication for 1 hour, stop stirring and ultrasonication, take out the material, pour it into an empty bottle for sealed storage, and obtain a pre-emulsion; the high-speed stirring speed is 450 rpm, and the medium-speed stirring speed is 300 rpm;

[0053...

Embodiment 3

[0062] This embodiment provides a method for preparing a phase-change energy storage material using the microemulsion method, and the specific steps are:

[0063] (1) Preparation of pre-emulsion

[0064] Add 110 parts by weight of distilled water, 5 parts of emulsifier, 4 parts of initiator, and 0.4 part of acid-base regulator into the reaction kettle, and after stirring at a high speed for 45 minutes at room temperature, add 20 parts of acrylate Add the mixed liquid of the monomer mixture and 50 parts of the phase change material (if it is solid, heat it to make it melt into a liquid) into the reaction kettle, and then stir it at a high speed for 30 minutes, then place it in the ultrasonic container for stirring After ultrasonication for 1 hour, stop stirring and ultrasonication, take out the material, pour it into an empty bottle for sealed storage, and obtain a pre-emulsion; the high-speed stirring speed is 600rpm;

[0065] (2) Preparation of phase change energy storage ma...

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