Hydrosol-hydrated salt-porous material composite system with flowability as well as preparation method and application of hydrosol-hydrated salt-porous material composite system

A technology of porous materials and hydrated salts, applied in the field of phase change materials, can solve the problems of complex phase change fluid processes and easy pollution, and achieve the effects of ensuring long-term stability, reducing breakage rate and low cost

Active Publication Date: 2021-07-20
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a hydrosol-hydrated salt-porous material composite system with fluidity for the problem that the phase change fluid process is complex and easy to produce pollution in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] According to the weight ratio of 87: 2: 11, the three-nitrate phase change material (as hydrated salt phase variable compound), nucleating agent nano alumina and expanded graphite (as a porous material), the expansion graphite particle size is 200 mesh, mixed uniform After 40 ° C to 50 ° C, the three-nitrate lithium phase change material is melted, so that it is uniformly absorbed, fully absorbed, cool to room temperature (or less below 25 ° C) to obtain three-water nitrate phase change material - expansion graphite Composites are ready.

[0054] The preparation of 5 wt% sodium carbonate (as a precipitant), 0.05 wt% silicon carbide nanowe (ceramic nano powder, as a heat transfer reinforcement), 3 wt% carboxymethylcellulose (as an organic sol), the margin is water Aqueous solution, mixed prepared hydrolyzol and three-nitrate lithium phase change material - expanded graphite complex, hydrolylable and three-sodium nitrate phase change material - expanded graphite composite mas...

Embodiment 2

[0060] According to the weight ratio of 78.5: 1.5: 20, the sodium sulfate phase change material (as hydrated salt phase variable compound), nucleating agent boron sand and expanded vermiculite (as a porous material), the expansion vermiculite particles are 400 mesh, mixed uniform At 50 ° C to 60 ° C, the sodium sulfate phase change material is melted, so that it is uniform, sufficiently absorbed, sufficiently absorbed, cooled to room temperature (below 25 ° C), resulting in sodium sulfate phase change material - expansion Stone composite spare.

[0061] Taking bismuth (as a precipitant), xanthan gum (as a gelatin substance), glucose (antioxidant, prevention of xanthan gum in long-term use), nano-copper powder (as a heat transfer reinforcement agent) and Sodium-Silver Soil (as a rubber substance) with the prepared tetrahydrate phase change material - expanded vermiculite composite grinding, dihydrazine, xanthan gum, glucose, nanoparticles and sodium After mixing the sodium sulfate ...

Embodiment 3

[0067] Six water chloride and hexahydrazine (as hydrate phase variable compound) were weighed according to weight ratio of 50:50, and hexahamite-hexahydrochloride hydrated salt phase change material was prepared, according to weight ratio 83: 2: 15 Six-hydracemic-hexahydrate hydrated salt phase change material, nucleating agent (octhyde hydroxide) and porous carbon (as a porous material), porous carbon particle size is 600 mesh, mix uniform, 40 ° C ~ The hydrated salt phase change material was uniformly absorbed by a porous carbon at a temperature of 50 ° C, and cooled to 20 ° C.

[0068] Preparation of 15 wt% silica (silica is a colloidal particles in inorganic silicon sol, is an effective component of forming an aqueous solution), 10 wt% sodium carbonate (as a precipitant), 1 wt% nanome metal zinc powder (as heat transfer Agent), 0.5 wt% polyacrylic acid (as an organic sol), aqueous solution of water is water, mixed with hexamnesium chloride-hexahydrazine-porous carbon complex, ...

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Abstract

The invention discloses a hydrosol-hydrated salt-porous material composite system with flowability as well as a preparation method and application thereof. The hydrosol-hydrated salt-porous material composite system with flowability comprises a hydrosol system and a hydrated salt-porous material compound dispersed in the hydrosol system, the mass ratio of the hydrosol system to the hydrated salt-porous material compound is (80: 20)-(50: 50), the hydrated salt-porous material compound comprises a porous material and a hydrated salt phase change compound adsorbed in an open pore channel of the porous material, and the hydrosol system comprises hydrosol and a precipitator dispersed in the hydrosol. And the hydrated salt phase change compound located at the open end of the open pore channel reacts with a precipitant to form an insoluble precipitate, and the open end is blocked. The system can be suitable for preparing phase-change energy storage modules with various complex shapes and filling energy storage containers with various complex shapes, and can also be applied to phase-change energy storage products with requirements on flowability.

Description

Technical field [0001] The present invention relates to the field of phase change materials, and more particularly to a fluid hydrolytic-hydrated salt-porous material composite system and a preparation method thereof. Background technique [0002] The preparation method suitable for hydrated salt-based phase translucent fluid is the microcapsule method, i.e., preparation of a hydrated salt-based microcapsule phase change material, and then dispersed the microcapsules into the fluid (generally water). The preparation method of hydrated salt-based microcapsules is mainly solvent volatile method, in situ polymerization method and silicone hydrolyzing method, the coating layer of the first two methods is mainly a polymer polymeric material, and the coating layer of the silicone hydrolyzate is Silica. [0003] The solvent volatilization method is to concentrate the polymer material dissolved in the solvent in the surface of the hydrate particles by continuously volatilizing the solven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 孙进贺王明勇景燕贾永忠谢绍雷邵斐张鹏瑞张茜黄超驰
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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