Phase-change energy storage microcapsules and preparation method thereof

A technology of phase-change energy storage and microcapsules, which is applied in the field of phase-change energy storage, can solve the problems of poor stability, easy failure of phase-change energy storage microcapsules, and short service life, and achieve good stability, thermal shock buffer, and The effect of improving the service life of the cooling cycle

Active Publication Date: 2013-03-20
领致热能新电器(江苏)股份有限公司
View PDF7 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing phase change energy storage microcapsules are prone to failure, short service

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phase-change energy storage microcapsules and preparation method thereof
  • Phase-change energy storage microcapsules and preparation method thereof
  • Phase-change energy storage microcapsules and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] (1) Preparation of submicrocapsules

[0037] The second phase change material, the prepolymer solution of the second wall capsule, and the emulsifier are mixed and emulsified to form an emulsion; then the emulsion is subjected to a constant temperature water bath, and after the reaction is complete, demulsification and filtration are performed to obtain a precipitate, and washing and drying the precipitate to obtain sub-microcapsules in which the second phase change material is encapsulated by the second wall capsule;

[0038] (2) The first phase change material coating

[0039]Disperse the sub-microcapsules prepared in the above step (1) into the liquid first phase change material, and stir to form a uniform dispersion solution of the sub-microcapsules;

[0040] (3) Preparation of the first wall capsule

[0041] Mix the homogeneous dispersion solution prepared in step (2), the prepolymer solution of the first wall capsule, and the emulsifier, and stir until they are ...

Example Embodiment

[0058] Example 1

[0059] First, 10 g of n-eicosane, 10 g of styrene, and 0.1 g of azobisisobutyronitrile were mixed at 45°C to form an oil phase; 0.1 g of sodium dodecylbenzenesulfonate was mixed with 100 g of water to form an oil phase. water box. Then the above-mentioned oil phase and the water phase were mixed and emulsified, the mechanical stirring speed was 350r / min, the stirring time was 15min, and the ultrasonic treatment was: frequency 28kH, time 90s; to form an emulsion, then the emulsion was subjected to a constant temperature water bath at 70°C , the water bath time is 8h. After the reaction is completed, it is naturally cooled, and then a saturated NaCl solution is added to the above cooling solution, and the solution is filtered to obtain a precipitate after obvious flocculent precipitation or paste appears. Then, the precipitate was washed with distilled water for 3 times and absolute ethanol for 2 times. After cleaning, vacuum drying was performed at 40° C...

Example Embodiment

[0061] Example 2

[0062] First, 10 g of styrene, 10 g of n-nonadecane, 0.1 g of azobisisobutyronitrile, 0.1 g of sodium dodecylbenzenesulfonate, and 100 g of water were mixed and emulsified together at 40° C. to form an emulsion. During the emulsification process, mechanical stirring and ultrasonic treatment were carried out. The mechanical stirring speed was 350 r / min, and the stirring time was 30 min; the ultrasonic frequency was 28 kHz, and the ultrasonic time was 1.5 min. Then, the formed emulsion was subjected to a constant temperature water bath at 70 °C, and the reaction time was 8 h; after the reaction was completed, it was cooled naturally; then a saturated NaCl solution was added to the above cooling solution, until the solution appeared obvious flocculent precipitation or paste. Filtration is carried out to obtain a precipitate; then the obtained precipitate is washed; wherein distilled water is washed three times, and absolute ethanol is washed twice. After cle...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
The average thicknessaaaaaaaaaa
The average thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides phase-change energy storage microcapsules comprising a first phase-change material, a first wall capsules coated on the first phase-change material, and sub-microcapsules distributed in the first phase-change material. The sub-microcapsules comprise a second phase-change material and second wall capsules coated on the second phase-change material. Also, the invention provides a method for preparing the phase-change energy storage microcapsules provided by the invention. The method comprises the steps such as sub-microcapsule preparation, first phase-change material coating, first wall capsule preparation, and the like. The phase-change energy storage microcapsules provided by the invention have the advantages of failure resistance, long service life, and good stability.

Description

technical field [0001] The invention relates to the technical field of phase change energy storage, in particular to a phase change energy storage microcapsule and a preparation method thereof. Background technique [0002] Phase change energy storage is a latent heat energy storage method, which uses the endothermic and exothermic effects of materials during the phase change process to store and release thermal energy, and has the advantages of high energy storage density and constant temperature. Since the phase change material becomes liquid after melting, it is amorphous, and if it is not shaped or wrapped, it will cause leakage problems during use. Therefore, the phase change material is generally encapsulated in microcapsules to form phase change energy storage microcapsules. . Due to the advantages of phase change energy storage microcapsules, which can increase the specific surface area and thermal conductivity of phase change materials, improve the stability of pha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09K5/06B01J13/14
Inventor 郑道勇朱俊虹
Owner 领致热能新电器(江苏)股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap