High-temperature phase change heat storage microcapsule based on aluminum-silicon alloy and preparation method thereof

An aluminum-silicon alloy, high-temperature phase transition technology, applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problems of difficult to meet the requirements of dispersibility in industrial applications, and achieve low cost, avoid loss, pressure resistance strong effect

Inactive Publication Date: 2018-07-20
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of this kind of microcapsule is simple, but there is adhesion between the prepared microcapsules, it is difficult to meet the industrial application that requires high dispersion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-temperature phase-change heat storage microcapsule based on an aluminum-silicon alloy and a preparation method thereof. The steps of the preparation method described in this embodiment are:

[0033] Step 1. According to the mass ratio of aluminum-silicon alloy powder: aluminum trichloride: ethyl acetate as 1: (0.01-0.03): (200-400), add the aluminum-silicon alloy powder and the aluminum trichloride into the into the ethyl acetate, and stirring for 30-40 min under a water bath condition of 60-80° C. to obtain a mixed solution.

[0034] Step 2: Under the conditions of water bath and stirring at 60-80° C., according to the mass ratio of the aluminum-silicon alloy powder: ethanol being 1: (100-300), add the absolute ethanol to the mixed solution, and stir for 2 ~4h, the suspension is obtained.

[0035] Step 3. Under the conditions of water bath and stirring at 60-80°C, the acetic acid is added to the suspension according to the mass ratio of the aluminum-silicon al...

Embodiment 2

[0038] A high-temperature phase-change heat storage microcapsule based on an aluminum-silicon alloy and a preparation method thereof. The steps of the preparation method described in this embodiment are:

[0039] Step 1. According to the mass ratio of aluminum-silicon alloy powder: aluminum trichloride: ethyl acetate as 1: (0.02-0.04): (400-600), add the aluminum-silicon alloy powder and the aluminum trichloride into the into the ethyl acetate, and stirring for 40-50 min under a water bath condition of 70-90° C. to obtain a mixed solution.

[0040]Step 2: Under the conditions of water bath and stirring at 70~90℃, according to the mass ratio of the aluminum-silicon alloy powder:ethanol is 1:(200~400), add the absolute ethanol to the mixed solution, stir for 4 ~6h, the suspension is obtained.

[0041] Step 3: Under the condition of water bath and stirring at 70~90℃, according to the mass ratio of the aluminum-silicon alloy powder:acetic acid is 1:(500~700), add the acetic acid...

Embodiment 3

[0044] A high-temperature phase-change heat storage microcapsule based on an aluminum-silicon alloy and a preparation method thereof. The steps of the preparation method described in this embodiment are:

[0045] Step 1. According to the mass ratio of aluminum-silicon alloy powder: aluminum trichloride: ethyl acetate as 1: (0.03-0.05): (600-800), add the aluminum-silicon alloy powder and the aluminum trichloride into the into the ethyl acetate, and stirring for 50-60 min under a water bath condition of 80-100° C. to obtain a mixed solution.

[0046] Step 2: Under the condition of 80~100℃ water bath and stirring, according to the mass ratio of the aluminum-silicon alloy powder:ethanol is 1:(300~500), add the absolute ethanol to the mixed solution, stir for 6 ~8h, the suspension is obtained.

[0047] Step 3: Under the conditions of water bath and stirring at 80-100°C, the acetic acid is added to the suspension according to the mass ratio of the aluminum-silicon alloy powder: a...

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Abstract

The invention relates to a high-temperature phase change heat storage microcapsule based on aluminum-silicon alloy and a preparation method thereof. The preparation method has the technical scheme that under the water bath and stirring condition, aluminum-silicon alloy power, aluminum trichloride and ethyl acetate are mixed according to a mass ratio of 1:(0.01 to 0.05):(200 to 800) to obtain mixedliquid; absolute ethyl alcohol is added into the mixed liquid according to the mass ratio of the aluminum-silicon alloy power to the ethyl alcohol being 1:(100 to 500); then, acetic acid is added according to the mass ratio of the aluminum-silicon alloy power to the acetic acid being 1:(400 to 800); still standing, filtering, washing and drying are performed; then, the mixture is put into a muffle furnace; under the oxidizing atmosphere, the temperature is raised to 900 to 1300 DEG C; heat insulation is performed for 2 to 8h; cooling is performed to room temperature; the high-temperature phase change heat storage microcapsule based on aluminum-silicon alloy is prepared. The preparation method has the advantages that the cost is low; the process is simple; the industrial production is easy. The prepared high-temperature phase change heat storage microcapsule based on aluminum-silicon alloy has the advantages that the dispersibility is high; the number of heat cycle times is high; the compression strength is great; the use temperature and the heat utilization rate are high.

Description

technical field [0001] The invention belongs to the technical field of high temperature phase change heat storage microcapsules. Specifically, it relates to providing a high-temperature phase-change heat storage microcapsule based on an aluminum-silicon alloy and a preparation method thereof. Background technique [0002] Thermal storage technology is an energy storage technology that uses thermal storage materials to store temporarily unneeded heat, and then releases the heat when it is needed. Thermal storage technology solves the contradiction between the time difference between heat supply and demand and improves the utilization rate of heat. Therefore, it can be used for peak shaving and valley filling of power load, solar energy storage and industrial waste heat recovery, etc., in order to develop new energy and save old energy. the goal of. [0003] The core problem of thermal storage technology is the preparation and application of thermal storage materials, among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06B01J13/02
CPCC09K5/063B01J13/02
Inventor 张美杰韩藏娟顾华志黄奥白晨付绿平
Owner WUHAN UNIV OF SCI & TECH
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