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,

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0124] 4. The preparation method of the microcapsule of the organic phase change energy storage material with the double-layer composite functional shell layer by combining the complex coacervation method with the in-situ polymerization method, the complex coacervation method and the sol-gel method includes:

[0125] First, the method of complex agglomeration is used, and the electrostatic mutual attraction between two or more water-soluble polymer molecules with opposite charges is used. The formed agglomerates are separated in the water phase and deposited at the interface. After co-curing, the first polymer shell layer is formed, and the organic phase change energy storage material microcapsule of the first polymer shell layer is prepared. At the same time, the organic phase change energy storage material can be pre-dispersed into certain functional particles to prepare microcapsules with functional particles such as infrared reflection and absorption, ultraviolet reflection an...

Example Embodiment

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

[0166] Preparation of urea-formaldehyde prepolymer aqueous solution: Add 240g urea and 488.5g 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, and heat to 70°C. A viscous liquid is obtained by the heat preservation reaction for 1 hour, and then diluted with 1000 g of water to obtain a stable aqueous solution of urea-formaldehyde prepolymer.

[0167] Preparation of the sodium salt hydrolysate solution of styrene-maleic anhydride copolymer: Add a certain amount of toluene into a three-necked flask equipped with a condenser, a thermometer and a stirrer, pass nitrogen to remove oxygen, and add 10% moles of toluene by mass Styrene and maleic ...

Example Embodiment

[0171] Example 2. Preparation of organic / organic composite shell embedded with hollow spheres by in-situ polymerization. Microcapsules of high-efficiency tissue section paraffin phase change energy storage materials with a melting point of 50~52℃

[0172] Take 10g of 10% styrene-maleic anhydride copolymer sodium hydrolysate solution in Example 1, add it to 100g of water, adjust its pH to 5-6 with 1M hydrochloric acid, and add 50g of high-efficiency melting point 50-52℃ Tissue section paraffin, keep the system at 75°C, use a high-speed shear emulsifier to shear and emulsify at 10000rpm for 10min, transfer the resulting emulsion to a three-necked flask in a 75°C water bath, and stir mechanically.

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

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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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