A kind of solar heat storage material and preparation method thereof

A technology of heat storage materials and solar energy, applied in the field of solar heat storage materials and preparation, to achieve the effects of improving heat storage capacity, simple processing technology, and reducing application costs

Active Publication Date: 2018-08-10
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of existing stearic acid shaped solar heat storage materials, and provide a kind of solar heat storage materials and preparation method

Method used

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  • A kind of solar heat storage material and preparation method thereof
  • A kind of solar heat storage material and preparation method thereof
  • A kind of solar heat storage material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Weigh 50g of silica sol with a mass fraction of 30% of silica, add 97g of deionized water to dilute, add 2.5mL of silane coupling agent, and stir at 30°C for 14h to obtain a mixed solution; the content of graphene oxide is measured to be 3mg / Add 50 mL of graphene oxide solution into the mixed solution slowly, stir evenly, dry at 50°C, and then bake at 700°C for 3 hours in an argon atmosphere to obtain graphene with a mass ratio of graphene to silicon dioxide of 1:100. - Nano-silica composite material; Weigh 3.0g of stearic acid into a conical flask equipped with a vacuum device, then pour 7.0g of graphene-nano-silica composite material, and vacuum the container to -0.05MPa Finally, place it in a heating type ultrasonic cleaner at 80°C for 40 minutes, stop vacuuming, and return the air to the container. After ultrasonic treatment for 5 minutes, take out the mixture in the container and cool it down to obtain a solar heat storage material. Using TAinstruments DSC Q2000 t...

Embodiment 2

[0030] Weigh 50g of silica sol with a mass fraction of silica of 30%, add 97g of deionized water to dilute, add 2.5mL of silane coupling agent, and stir at 45°C for 10h to obtain a mixed solution; the content of graphene oxide is measured to be 3mg / Add 250 mL of graphene oxide solution into the mixed solution slowly, stir evenly, dry at 60°C, and then bake at 800°C for 2 hours under nitrogen atmosphere to obtain graphene- Nano-silica composite material; Weigh 3.0g of stearic acid into a conical flask equipped with a vacuum device, then pour 7.0g of graphene-nano-silica composite material, and vacuum the container to -0.05MPa , placed in a heating type ultrasonic cleaner at 80°C for 40 minutes, stop vacuuming, return the air to the container, after ultrasonic treatment for 5 minutes, take out the mixture in the container, cool it down, and obtain a solar heat storage material. Using TAinstruments DSC Q2000 to test the heat storage behavior of the material (the latent heat of p...

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Abstract

The invention discloses a solar heat storage material and a preparation method, in particular relates to a solar heat storage material of which the heat storage behavior can be directionally adjusted, and a preparation method, and belongs to the technical field of heat storage material preparation. The designed heat storage material is prepared from a graphene-nanosilicon dioxide composite material and stearic acid according to a mass ratio of the graphene-nanosilicon dioxide composite material to the stearic acid being (10 to 15) : (4 to 7), and in the graphene-nanosilicon dioxide composite material, a mass ratio of graphene to nanosilicon dioxide is (1 to 20) : (80 to 99). By blending the less graphene with nanosilicon dioxide, the heat storage behavior of an obtained finished product can be greatly adjusted and controlled; the components are arranged reasonably, a processing technology is simple, the heat storage behavior of the material can be directionally adjusted and controlled, the adaptability is high, and large-scale application is facilitated.

Description

technical field [0001] The invention discloses a solar heat storage material and a preparation method; in particular, it refers to a solar heat storage material with adjustable heat storage behavior orientation and a preparation method; it belongs to the technical field of heat storage material preparation. Background technique [0002] As the cleanest renewable energy, solar energy is the most widely distributed and easy to obtain among all renewable energy sources, and has attracted worldwide attention. However, solar energy has the disadvantages of obvious intermittency and low energy density. By storing solar thermal energy, solar heat storage materials can solve the contradiction between energy supply and demand in time and space, and realize the continuity and efficient utilization of energy supply. At present, solar thermal storage materials have great application potential in the field of solar thermal energy, such as solar thermal power generation, building energy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 李传常杨立新陈荐
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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