Multi-component net shell phase change microcapsule and preparation method thereof

A technology of phase-change microcapsules and mesh shells, which is applied in the direction of microcapsule preparations, microsphere preparation, chemical instruments and methods, etc., can solve the problems of high permeability of microcapsule walls and leakage of energy storage materials, and achieve a solution Effects of leakage of core material, increase of crosslink density, enhancement of compactness and stability

Active Publication Date: 2019-04-26
上海伊纯实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-component reticulated shell phase-change microcapsule and its preparation method, which can solve the problem of high permeability of the microcapsule wall prepared by the reaction of aliphatic isocyanate and diamine. During the process, a microcapsule wall with a multi-component network structure is formed, which improves the compactness and stability of the microcapsule wall and solves the problem of leakage of energy storage materials.

Method used

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  • Multi-component net shell phase change microcapsule and preparation method thereof

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Embodiment 1

[0041]This embodiment discloses a phase-change microcapsule with a multi-component reticulated shell, which includes a capsule core and a capsule wall. The capsule core component is butyl stearate, and the capsule wall is isophorone diisocyanate and two Ethylene triamine, polypropylene glycol 2000 and triethanolamine containing three hydroxyl groups react to form a polyurea polyurethane multi-component network structure resin.

[0042] The preparation method of the above-mentioned phase-change microcapsules is specifically implemented according to the following steps:

[0043] Step 1, mix butyl stearate, isophorone diisocyanate and polypropylene glycol 2000 as the oil phase medium solution of the system, wherein the mass ratio of isophorone diisocyanate to butyl stearate is 0.1:1 , The mass ratio of polypropylene glycol 2000 to isophorone diisocyanate is 0.1:1.

[0044] Step 2, take the distilled water according to the ratio that the quality of the distilled water is 4 times ...

Embodiment 2

[0052] This embodiment discloses a phase-change microcapsule with a multi-component reticulated shell, which includes a capsule core and a capsule wall. The capsule core component is octadecane, and the capsule wall is made of isophorone diisocyanate and diethylene triethylene Amine, polypropylene glycol 2000 and glycerol react to form a resin with polyurea polyurethane multicomponent network structure.

[0053] This embodiment also discloses the preparation method of the above-mentioned phase change microcapsules, specifically implemented according to the following steps:

[0054] Step 1, mix octadecane, isophorone diisocyanate and polypropylene glycol 2000 as the oil phase of the system, wherein, the mass ratio of isophorone diisocyanate to octadecane is 0.3:1, polypropylene glycol 2000 and isophorone The ratio of Fluorone diisocyanate is 0.4:1.

[0055] Step 2, weigh the distilled water according to the ratio that the quality of the distilled water is 5 times of the mass o...

Embodiment 3

[0062] This embodiment discloses a phase-change microcapsule with a multi-component reticulated shell, which includes two parts: a capsule core and a capsule wall. Amine, polypropylene glycol 1500, and trimethylolpropane react to form a resin with a polyurea polyurethane multicomponent network.

[0063] This embodiment also discloses the preparation method of the above-mentioned phase change microcapsules, specifically implemented according to the following steps:

[0064] Step 1, mix hexadecane, isophorone diisocyanate and polypropylene glycol 1500 as the oil phase of the system, wherein the mass ratio of isophorone diisocyanate to hexadecane is 0.4:1, polypropylene glycol 1500 and isophorone The ratio of Fluorone diisocyanate is 0.2:1.

[0065] Step 2 specifically is to weigh the distilled water according to the ratio of the mass of the distilled water to 6 times the mass of the hexadecane, weigh the emulsifier according to the mass ratio of the emulsifier to the hexadecane...

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Abstract

The invention discloses a multi-component netted shell phase change microcapsule. A capsule core is a low-melting-point fatty acid ester or paraffin hydrocarbon compound; a capsule wall is resin whichis formed by reacting polyisocyanate with polyamine, oil-soluble polyol and water-soluble polyol respectively and has a polyurea polyurethane multi-component net structure. The invention also discloses a preparation method of the phase change microcapsule. The preparation method comprises the steps as follows: emulsifying oil phase and water phase medium solutions, adding water-soluble polyol, then, conducting a heating reaction, finally, adding water-soluble polyol and performing a thermal reaction to obtain the phase change microcapsule. A shell is formed by introducing reactions among monomers from inside of interfaces, and the reaction monomers are promoted to react completely when the reaction ends; the multi-component netted shell phase change microcapsule is prepared by reacting aliphatic isophorone diisocyanate with diethylenetriamine, oil-soluble polypropylene glycol with larger molecular weight and water-soluble polyol respectively, and the crosslinking density of the microcapsule wall is increased, so that the compactness and stability of the capsule wall are enhanced.

Description

technical field [0001] The invention belongs to the technical field of preparation of phase-change materials, in particular to a phase-change microcapsule with a multi-component reticulated shell, and also to a preparation method of the phase-change microcapsule. Background technique [0002] Using the endothermic reaction of phase change materials during the phase change process, energy can be stored and utilized, but pure phase change materials are also limited during use, such as combining with matrix materials, being corrosive and easy to lose Due to its excellent heat storage performance, phase change microcapsules have become a research hotspot in the field of energy in recent decades, and are widely used in solar energy, building materials, textiles and clothing, and food packaging, etc. Related field. [0003] At present, the microcapsule products coated with phase change materials mainly use melamine formaldehyde resin and polyurea resin as the shell. Because the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06B01J13/02
CPCB01J13/02C09K5/06
Inventor 陆少锋宋庆文辛成邵景峰肖超鹏
Owner 上海伊纯实业有限公司
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