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Microcapsule of organic phase change energy storage material and preparation method thereof

A technology of energy storage materials and organic materials, which is applied in the field of microcapsules of organic phase change energy storage materials and its preparation, and can solve problems such as microcapsule damage

Active Publication Date: 2009-10-14
BEIJING NEW BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the microcapsules of phase-change energy storage materials made of gelatin and gum arabic through complex coacervation, because the raw material of gum arabic is relatively expensive and easily hydrolyzed and degraded, the microcapsules are destroyed

Method used

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  • Microcapsule of organic phase change energy storage material and preparation method thereof
  • Microcapsule of organic phase change energy storage material and preparation method thereof
  • Microcapsule of organic phase change energy storage material and preparation method thereof

Examples

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preparation example Construction

[0124] 4. Combining complex coagulation method with in-situ polymerization method, complex coacervation method and sol-gel method to prepare microcapsules of organic phase change energy storage materials with double-layer composite functional shells, including:

[0125] First, the method of complex coacervation is adopted, and the electrostatic interaction between two or more water-soluble polymer molecules with opposite charges is used, and the formed condensate undergoes phase separation in the water phase and deposits at the interface. After joint curing, the first polymer shell layer is formed, and the organic phase change energy storage material microcapsules of the first polymer shell layer are prepared. At the same time, organic phase change energy storage materials can be pre-dispersed into certain functional particles to prepare microcapsules with functional particles such as infrared reflection and absorption, ultraviolet reflection and absorption, thermal radiation r...

Embodiment 1

[0165] Example 1. Preparation of phase-change energy storage material microcapsules inlaid with hollow spheres by organic / organic composite shell encapsulating 30# phase-change wax by in-situ polymerization

[0166] Preparation of urea-formaldehyde prepolymer aqueous solution: Add 240g of urea and 488.5g of 37% formaldehyde aqueous solution into a three-necked flask equipped with a reflux condenser, mechanically stir to dissolve, add triethanolamine to adjust the pH of the system to 8, heat to 70°C, Insulate and react for 1 hour to obtain a viscous liquid, then add 1000 g of water to dilute to obtain a stable aqueous solution of urea-formaldehyde prepolymer.

[0167] Preparation of the sodium salt hydrolyzate solution of styrene-maleic anhydride copolymer: add a certain amount of toluene to a three-necked flask equipped with a condenser, a thermometer and an agitator, pass nitrogen to remove oxygen, and add 10% mole of toluene mass Styrene and maleic anhydride with a ratio of ...

Embodiment 2

[0171] Example 2. Preparation of microcapsules of paraffin wax phase-change energy storage materials with high-efficiency tissue slices with a melting point of 50-52°C in an organic / organic composite shell embedded with hollow spheres prepared by in-situ polymerization

[0172] Get the sodium salt hydrolyzate solution of 10g 10% styrene-maleic anhydride copolymer among the embodiment 1, join in 100g water, adjust its pH value 5~6 with 1M hydrochloric acid, add 50g fusing point 50~52 ℃ high-efficiency Paraffin the tissue sections, keep the system at 75°C, use a high-speed shear emulsifier to emulsify at 10,000rpm for 10min, transfer the obtained emulsion to a three-necked flask in a water bath at 75°C, and stir mechanically.

[0173] Take 100 g of the urea-formaldehyde prepolymer aqueous solution in Example 1, add 2.5 g of sodium chloride to dissolve it, adjust the pH value of the solution to 5-6 with 1M hydrochloric acid, slowly drop it into a three-necked bottle of paraffin wa...

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Abstract

The invention discloses a microcapsule of an organic phase change energy storage material and a preparation method thereof. The microcapsule of an organic phase change energy storage material comprises a core and a nucleocapsid, wherein the material of the core comprises the organic phase change energy storage material; the nucleocapsid at least comprises an inner layer and an outer layer, the inner layer is packaged by any one of an in situ polymerization method, an interface polymerization method, a reaction phase separating method, a double agglomeration method and a sol-gal process, and the outer layer is packaged by any one of an in situ polymerization method, a reaction phase separating method, a sol-gal process and a double agglomeration method. The microcapsule has adjustable size, nucleocapsid composition and shell thickness, favorable flexibility, mechanical strength, penetrability resistance and dispersibility and can be widely applied to the fields of energy sources, materials, aero-space, textile, electric power, medical apparatus, architecture, and the like, such as solar utilization, industrial afterheat and waste heat recovery, architecture energy storage, dress with constant temperature, air conditioners for cool and heat accumulation, constant temperature of electric appliances, and the like.

Description

technical field [0001] The invention relates to a microcapsule of an organic phase change energy storage material and a preparation method thereof. Background technique [0002] With the increasing demand for energy, the shortage and scarcity of energy resources have become particularly prominent. Therefore, energy saving, energy saving and efficient use of other renewable energy have become important contents in the energy field. Using phase change latent heat of phase change materials to store energy (cold storage, heat storage) is a new type of environmental protection and energy saving technology. [0003] Phase change materials (PCMs) refer to a kind of intelligent material that can absorb or release heat when a substance changes phase, but the temperature of the substance itself does not change or changes little. The normal and low temperature phase change material or the phase change material compounded with the material has the function of adaptive environmental tem...

Claims

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Application Information

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IPC IPC(8): C09K5/06B01J13/14B01J13/10
CPCY02E70/30
Inventor 杨振忠金兆国刘继广屈小中
Owner BEIJING NEW BUILDING MATERIAL
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