Low-cost solar heat-absorbing ceramic material and preparation method thereof

A technology for solar energy absorption and ceramic materials, which is applied in the field of low-cost solar energy absorption ceramic materials and their preparation, can solve the problems of thermal stress damage, low durability, poor air flow stability, etc. Solve the effect of poor thermal shock resistance, poor high temperature oxidation resistance and good high temperature oxidation resistance

Active Publication Date: 2017-08-04
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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  • Low-cost solar heat-absorbing ceramic material and preparation method thereof

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Effect test

Embodiment 1

[0022] A low-cost solar heat-absorbing ceramic material, including the following components: 15kg of silicon nitride, 15kg of boron nitride, 5kg of titanium silicide, 5kg of nickel carbide, 5kg of chromium oxide, 5kg of aluminum oxide, 2kg of sodium silicate, 2kg of boron oxide, Manganese monoxide 2kg.

[0023] Wherein, each component is a powder with an average particle diameter of 1 nm.

[0024] The above-mentioned method for preparing a low-cost solar heat-absorbing ceramic material uses silicon nitride and boron nitride as substrates, and titanium silicide, nickel carbide, chromium oxide, aluminum oxide, sodium silicate, boron oxide, and manganese monoxide as substrates. Additives are used to synthesize a high-temperature-resistant binding phase, and polyurethane foam is used as a precursor to prepare ceramic materials by impregnating organic foam. Specific steps are as follows:

[0025] (1) Weigh each component of formula quantity, take dehydrated alcohol as dispersant,...

Embodiment 2

[0030] A low-cost solar heat-absorbing ceramic material, including the following components: 40kg of silicon nitride, 40kg of boron nitride, 15kg of titanium silicide, 15kg of nickel carbide, 12kg of chromium oxide, 12kg of aluminum oxide, 7kg of sodium silicate, 5kg of boron oxide, Manganese monoxide 3kg.

[0031] Wherein, each component is a powder with an average particle diameter of 100 nm.

[0032] The above-mentioned method for preparing a low-cost solar heat-absorbing ceramic material uses silicon nitride and boron nitride as substrates, and titanium silicide, nickel carbide, chromium oxide, aluminum oxide, sodium silicate, boron oxide, and manganese monoxide as substrates. Additives are used to synthesize a high-temperature-resistant binding phase, and polyurethane foam is used as a precursor to prepare ceramic materials by impregnating organic foam. Specific steps are as follows:

[0033] (1) Weigh each component of formula quantity, take dehydrated alcohol as dispe...

Embodiment 3

[0038] A low-cost solar heat-absorbing ceramic material, including the following components: 18kg silicon nitride, 20kg boron nitride, 8kg titanium silicide, 8kg nickel carbide, 7kg chromium oxide, 6kg aluminum oxide, 3kg sodium silicate, 3kg boron oxide, Manganese monoxide 2kg.

[0039] Wherein, each component is a powder with an average particle diameter of 1 nm.

[0040] The above-mentioned method for preparing a low-cost solar heat-absorbing ceramic material uses silicon nitride and boron nitride as substrates, and titanium silicide, nickel carbide, chromium oxide, aluminum oxide, sodium silicate, boron oxide, and manganese monoxide as substrates. Additives are used to synthesize a high-temperature-resistant binding phase, and polyurethane foam is used as a precursor to prepare ceramic materials by impregnating organic foam. Specific steps are as follows:

[0041] (1) Weigh each component of formula quantity, take dehydrated alcohol as dispersant, ZrO 2 The ball is a ba...

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Abstract

The invention discloses a low-cost solar heat-absorbing ceramic material. The low-cost solar heat-absorbing ceramic material contains the following components in parts by weight: 15-40 parts of silicon nitride, 15-40 parts of boron nitride, 5-15 parts of titanium silicide, 5-15 parts of nickel 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 monoxide. The heat-absorbing ceramic material with good high-temperature oxidation resistance and thermal shock resistance, a three-dimensional network structure, a high specific surface area and high thermal conductivity is prepared by virtue of an organic foam dipping process and is particularly suitable for tower type solar thermal power generation heat-absorbing bodies.

Description

technical field [0001] The invention relates to the field of new energy technologies, in particular to a low-cost solar 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, and 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 guidance and requirements of energy conservation and emission reduction policies, the application of solar thermal technology in buildings in my country has increased significantly, and the requirements for solar building integration are also getting higher and higher. [0003] Due to the high concentration ratio (200-100KW / m 2 ), high thermal cycle temperature, sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/583C04B35/584C04B38/06
CPCC04B35/583C04B35/584C04B38/0054C04B38/0074C04B38/0615C04B2235/3217C04B2235/3241C04B2235/3262C04B2235/3409C04B2235/3427C04B2235/3817C04B2235/3891C04B2235/96
Inventor 应沛亮
Owner 泾县凡泽科技服务有限公司
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