A kind of heat-absorbing material of nickel-containing alloy hollow sphere and its preparation method

An endothermic material and hollow sphere technology, applied in the field of solar energy absorption, can solve the problems of low thermal efficiency of solar collectors, poor weather resistance of coatings, premature powdering, etc., and achieve low emissivity, low cost, and enhanced bonding force. Effect

Active Publication Date: 2020-04-28
GUANGXI JIKUAN SOLAR ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, it is generally used in the market to spray black organic coatings on the heat-absorbing plate core of solar collectors, such as black fluorocarbon resin, black epoxy resin, black polyurethane resin, etc., because ordinary resin materials are used as adhesives. 2. Since ordinary carbon black or black pigments are used as the color body, there is no spectrum selectivity
Therefore, its coating has a high emissivity, which results in low thermal efficiency of the solar collector.

Method used

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  • A kind of heat-absorbing material of nickel-containing alloy hollow sphere and its preparation method

Examples

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Effect test

Embodiment 1

[0018] A heat-absorbing material of a nickel-containing alloy hollow sphere and a preparation method thereof. The heat-absorbing material is made of the following raw materials in parts by weight:

[0019] 25 parts of nickel alloy hollow spheres, 15 parts of silicone resin, 35 parts of epoxy resin, 10 parts of ethanol, 3 parts of silane coupling agent, 2 parts of silica sol, 5 parts of nano-alumina powder, 5 parts of nano-iron sesquioxide powder parts and 15 parts of deionized water.

[0020] The nickel alloy hollow sphere is prepared from nickel salt, sodium hydroxide, reducing agent and additives. The nickel salt is nickel sulfate, nickel nitrate, nickel acetate or nickel chloride; the reducing agent is hypophosphite, borohydride or hydrazine hydrate; the additive is lactic acid, citric acid, succinic acid or adipic acid. The diameter of the nickel alloy hollow sphere is less than 1 μm.

[0021] The preparation method includes the following:

[0022] (1) Dissolve epoxy re...

Embodiment 2

[0026] A heat-absorbing material of a nickel-containing alloy hollow sphere and a preparation method thereof. The heat-absorbing material is made of the following raw materials in parts by weight:

[0027] 20 parts of nickel alloy hollow spheres, 10 parts of silicone resin, 10 parts of epoxy resin, 1 part of ethanol, 2 parts of silane coupling agent, 1 part of silica sol, 1 part of nano-alumina powder, 1 part of nano-iron sesquioxide powder parts and 20 parts of deionized water.

[0028] The nickel alloy hollow sphere is prepared from nickel salt, sodium hydroxide, reducing agent and additives. The nickel salt is nickel sulfate, nickel nitrate, nickel acetate or nickel chloride; the reducing agent is hypophosphite, borohydride or hydrazine hydrate; the additive is lactic acid, citric acid, succinic acid or adipic acid. The diameter of the nickel alloy hollow sphere is less than 1 μm.

[0029] The preparation method includes the following:

[0030] (1) Dissolve epoxy resin i...

Embodiment 3

[0034] A heat-absorbing material of a nickel-containing alloy hollow sphere and a preparation method thereof. The heat-absorbing material is made of the following raw materials in parts by weight:

[0035] 30 parts of nickel alloy hollow spheres, 20 parts of silicone resin, 60 parts of epoxy resin, 20 parts of ethanol, 4 parts of silane coupling agent, 3 parts of silica sol, 10 parts of nano-alumina powder, 10 parts of nano-ferric oxide powder parts and 10 parts of deionized water.

[0036] The nickel alloy hollow sphere is prepared from nickel salt, sodium hydroxide, reducing agent and additives. The nickel salt is nickel sulfate, nickel nitrate, nickel acetate or nickel chloride; the reducing agent is hypophosphite, borohydride or hydrazine hydrate; the additive is lactic acid, citric acid, succinic acid or adipic acid. The diameter of the nickel alloy hollow sphere is less than 1 μm.

[0037] The preparation method includes the following:

[0038] (1) Dissolve epoxy resi...

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Abstract

The invention discloses a heat-absorbing material of a nickel-containing alloy hollow sphere and a preparation method thereof. The heat-absorbing material is prepared from the following raw materialsin parts by mass: 20 to 30 parts of nickel alloy hollow spheres, 10 to 20 parts of silicon resin, 10 to 60 parts of epoxy resin, 10 to 20 parts of ethyl alcohol, 2 to 4 parts of silane coupling agents, 1 to 3 parts of silica sol, 1 to 10 parts of nanometer aluminum oxide powder and 1 to 10 parts of nanometer ferric oxide powder. The preparation process is simple; the cost is low; the industrial production is easy; the stability is high; a coating prepared from the material has high heat absorption rate and low light emission rate; good mechanical performance and higher weather resistance are realized.

Description

technical field [0001] The invention relates to the technical field of solar heat absorption, and more specifically relates to a heat absorption material of a nickel-containing alloy hollow sphere and a preparation method thereof. Background technique [0002] Energy utilization occupies a pivotal position in the development of human society, but the excessive development of resources and inefficient resource utilization make human beings face a severe test. As we all know, solar energy is the most abundant and widely available renewable energy, which plays a major role in solving energy crisis and environmental problems. , making it a hot research topic in various countries. [0003] Solar absorbing coatings are mainly divided into spectrally selective absorbing coatings and high-absorbing absorbing coatings. Spectrum-selective heat-absorbing coatings are special coatings with high absorption of visible-near-infrared light and high reflection of infrared light. , that is,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L83/04C08K13/04C08K7/24C08K5/05C08K5/54C08K3/36C08K3/22
CPCC08K2003/2227C08K2003/2272C08L63/00C08L83/04C08K13/04C08K7/24C08K5/05C08K5/54C08K3/36C08K3/22
Inventor 蒙献芳李正良陈明贤金秋生郭家红姚小龙
Owner GUANGXI JIKUAN SOLAR ENERGY EQUIP
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