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A heat storage material microcapsule and its production and application

A heat storage material and microcapsule technology, which can be used in microcapsule preparations, heat exchange materials, and microsphere preparation, etc., can solve problems such as restricted use, and achieve easy availability of materials, good controllability, and good physical and chemical properties of products. Effect

Active Publication Date: 2016-03-02
上海美纤智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this material exists in a solid-liquid phase transition state, people's use is limited.

Method used

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  • A heat storage material microcapsule and its production and application
  • A heat storage material microcapsule and its production and application
  • A heat storage material microcapsule and its production and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: A method for producing heat-storing microcapsules with nylon as the shell material and n-dodecyl alcohol as the core material.

[0051] 1. In 1M 3 Add 400 kg of core material to the reaction kettle, heat it to 24-30 ° C, make it completely melted, add 205 kg of surfactant Span, 50 kg of adipoyl chloride, and mix well.

[0052] 2. At 2M 3 Add 400 kg of deionized water and 8 kg of lysine salt into the reaction kettle and stir thoroughly to adjust the pH of the system between 8-9 and heat up to 25-30°C. Add ① into ②, turn on the high-shear emulsifier to emulsify the core material, observe under the microscope that the particle size reaches 2-4 microns, add 10 kg of hexamethylenediamine aqueous solution (hexamethylenediamine: water = 1: 1) to raise the temperature Between 40-80 ℃, keep warm for 1-5 hours to get the desired product.

Embodiment 2

[0054] Production method using toluene diisocyanate as shell material and n-tetradecyl alcohol as core material

[0055] Mix 500 kg of melted core material n-tetradecyl alcohol with 40 kg of toluene diisocyanate and add 550 kg of 40°C water 2M 3 The high shear emulsifier was turned on for emulsification under the condition of stirring in the reactor (stirring in all the examples could not be stopped from beginning to end), and the line speed was 20 m / s. Observe under a microscope when the particles reach 1-5 microns, add 3-8 kg of initiator ethylenediamine, and keep warm at 40-45°C for 3 hours, so that toluene diisocyanate and ethylenediamine fully react, and the shell material is solidified, filtered, That is, the microcapsule product with polyurethane as the shell.

Embodiment 3

[0057] Production method with epoxy compound as shell material and n-hexadecanol as core material

[0058] (1) in 1M 3 Melt 500 kg of cetyl alcohol in the reaction kettle, add 40 kg of epoxy resin with brand E-51 and stir evenly; if 2-6 kg of epichlorohydrin is added, the encapsulation effect will be better;

[0059] (2) in 2M 3 Add 500 kg of water to the reaction kettle, add 100 kg of aqueous solution containing 20 kg of methyl cellulose under stirring conditions, and when heated to 50°C, add the melted substance of step (1), and start the high-shear emulsifier , observed under a microscope, the core material is emulsified to 5 micron particles under the action of a line speed of 35 m / s, and then 8-20 kg of hexamethylenediamine aqueous solution (mass concentration 50%) is added dropwise. After completing the above operations, keep the system at 50-55°C for 0.5-3 hours to fully cross-link and solidify the shell material, and filter to obtain the desired product.

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Abstract

The invention relates to a phase change heat storage material, in particular to a heat storage material microcapsule, production thereof and application thereof, wherein a synthetic high molecular material or a natural high molecular material is used as a shell material, and a mixture of more than one or two of hydrophobic materials of which the solid-liquid phase conversion can be completed during the temperature change in the range of 50 DEG C below zero to 100 DEG C is used as a core material, wherein the mass ratio of the core material to the shell material is 100:5 to 50. With the adoption of the heat storage material microcapsule, the production thereof and the application thereof, a produced microcapsule product of particles from the nano level to the micro level is capable of resisting 340 DEG C high temperature and 12KPa pressure, has good chemical stability and can be widely used in multiple fields of construction material, spinning, biology, physical therapy and the like.

Description

technical field [0001] The invention relates to a phase-change heat storage material, in particular to an industrial production method for microencapsulation of a phase-change heat storage material Background technique [0002] The world has entered the era of low-carbon and energy-saving, and phase-change thermal storage materials have been paid more and more attention by people because of their unique heat-absorbing-heat-releasing functions. However, because this material exists in a solid-liquid phase transition state, its application is limited. This material is microencapsulated and then spray-dried to make a powder, so that the conversion of solid-liquid form is limited to the inside of the microcapsule. With the protection of the microcapsule shell, a broad space is provided for the use of this material. Contents of the invention [0003] The present invention aims at the above problems and provides a heat storage material microcapsule and its production and appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B01J13/14D01F1/10
Inventor 高斌
Owner 上海美纤智能科技有限公司
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