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A kind of solar heat absorbing ceramic material and preparation method thereof

A technology of solar heat absorption and ceramic materials, which is applied in the field of solar heat absorption ceramic materials and its preparation, can solve the problems of poor air flow stability, thermal stress damage of concentrated energy flow density materials, and low durability, and achieve high temperature oxidation resistance Good performance, solve the effect of poor thermal shock resistance and poor high temperature oxidation resistance

Active Publication Date: 2020-06-30
泾县凡泽科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the inhomogeneity and instability of the concentrated energy flow density of the tower heat absorber, the local hot spots of the heat absorber cause thermal stress damage to the material, poor air flow stability, and low durability, so urgent development is needed. A new type of heat absorber material with good high temperature oxidation resistance, good thermal shock resistance, three-dimensional or two-dimensional connected structure, high specific surface area and high thermal conductivity

Method used

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  • A kind of solar heat absorbing ceramic material and preparation method thereof

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Effect test

Embodiment 1

[0021] A solar heat-absorbing ceramic material, including the following components: 15kg of silicon nitride, 15kg of boron nitride, 5kg of titanium silicide, 5kg of tantalum carbide, 5kg of chromium oxide, 5kg of alumina, 2kg of sodium silicate, 2kg of boron oxide, and oxide Manganese 2kg.

[0022] Among them, each component is powder with an average particle size of 1 nm.

[0023] The preparation method of the above-mentioned solar heat-absorbing ceramic material is synthesized by using silicon nitride and boron nitride as the base material and using titanium silicide, tantalum carbide, chromium oxide, aluminum oxide, sodium silicate, boron oxide and manganese monoxide as additives. The high-temperature-resistant combined phase uses polyurethane foam as the precursor and uses the organic foam impregnation process to prepare ceramic materials. Specific steps are as follows:

[0024] (1) Weigh each component of the formula, use absolute ethanol as the dispersant, ZrO 2 The ball is t...

Embodiment 2

[0029] A solar heat-absorbing ceramic material, including the following components: 40kg of silicon nitride, 40kg of boron nitride, 15kg of titanium silicide, 15kg of tantalum carbide, 12kg of chromium oxide, 12kg of alumina, 7kg of sodium silicate, 5kg of boron oxide, and oxide Manganese 3kg.

[0030] Among them, each component is powder with an average particle size of 100 nm.

[0031] The preparation method of the above-mentioned solar heat-absorbing ceramic material is synthesized by using silicon nitride and boron nitride as the base material and using titanium silicide, tantalum carbide, chromium oxide, aluminum oxide, sodium silicate, boron oxide and manganese monoxide as additives. The high-temperature-resistant combined phase uses polyurethane foam as the precursor and uses the organic foam impregnation process to prepare ceramic materials. Specific steps are as follows:

[0032] (1) Weigh each component of the formula, use absolute ethanol as the dispersant, ZrO 2 The bal...

Embodiment 3

[0037] A solar heat-absorbing ceramic material, including the following components: 18kg of silicon nitride, 20kg of boron nitride, 8kg of titanium silicide, 6kg of tantalum carbide, 7kg of chromium oxide, 6kg of alumina, 3kg of sodium silicate, 3kg of boron oxide, and oxide Manganese 2kg.

[0038] Among them, each component is powder with an average particle size of 1 nm.

[0039] The preparation method of the above-mentioned solar heat-absorbing ceramic material is synthesized by using silicon nitride and boron nitride as the base material and using titanium silicide, tantalum carbide, chromium oxide, aluminum oxide, sodium silicate, boron oxide and manganese monoxide as additives. The high-temperature-resistant combined phase uses polyurethane foam as the precursor and uses the organic foam impregnation process to prepare ceramic materials. Specific steps are as follows:

[0040] (1) Weigh each component of the formula, use absolute ethanol as the dispersant, ZrO 2 The ball is t...

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Abstract

The invention discloses a solar heat absorption ceramic material which comprises, by weight, 15-40 parts of silicon nitride, 15-40 parts of boron nitride, 5-15 parts of titanium silicon, 5-15 parts of tantalum carbide, 5-12 parts of chromium oxide, 5-12 parts of aluminum oxide, 2-7 parts of sodium silicate, 2-5 parts of boron oxide and 2-3 parts of manganese oxide. The heat absorption ceramic material is prepared by the aid of an organic foam dipping process, good in high-temperature oxidation resistance and thermal shock resistance, high in specific surface area and heat conductivity and particularly applicable to solar thermal power generation heat-absorbing bodies and has a three-dimensional network structure.

Description

Technical field [0001] The invention relates to the technical field of new energy, in particular to a solar energy heat-absorbing ceramic material and a preparation method thereof. Background technique [0002] New energy is a variety of energy forms other than traditional energy, including solar energy, geothermal energy, ocean energy, wind energy, and nuclear fusion energy. Solar energy is an inexhaustible renewable resource. The development and utilization of solar energy is one of the important ways to realize the diversification of energy supply and ensure energy security. In recent years, under the policy guidance and requirements of energy conservation and emission reduction, the application of solar thermal technology in my country's buildings has increased significantly, and the requirements for the integration of solar energy buildings are also increasing. [0003] Tower solar thermal power generation system due to the high concentration ratio (200-100KW / m 2 ), the chara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/583C04B35/584
CPCC04B35/583C04B35/584C04B38/0615C04B2235/3217C04B2235/3241C04B2235/3262C04B2235/3409C04B2235/3427C04B2235/3839C04B2235/3891C04B2235/5445C04B2235/5454C04B2235/96C04B2235/9607C04B38/0074C04B38/0051
Inventor 应沛亮
Owner 泾县凡泽科技服务有限公司