Medium-high temperature solar energy selective absorption coating layer and preparation method thereof

A technology that absorbs coatings and solar energy. It is applied in the field of photothermal solar energy to achieve good heat resistance, improve photothermal efficiency, and improve selective absorption.

Inactive Publication Date: 2018-08-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 3d orbital electrons of transition metals are not fully filled, and the electrons in the 3d orbitals are accompanied by energy level splitting under the action of the crystal field, and the energy range of this energy level is more consistent with the energy range of visible light, resulting in greater sensitivity to visible light. absorption, and these composite oxides have no absorption for infrared light

Method used

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  • Medium-high temperature solar energy selective absorption coating layer and preparation method thereof
  • Medium-high temperature solar energy selective absorption coating layer and preparation method thereof
  • Medium-high temperature solar energy selective absorption coating layer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A medium and high temperature solar selective absorption coating, which consists of the following raw materials in parts by weight: 30 parts of organic silicon resin, CuCoMnO x 30 parts of functional powder, 20 parts of xylene, 5 parts of wetting and dispersing agent (1:1 ratio of disponer 904s and 583), 5 parts of anti-settling agent, 5 parts of leveling agent, 3 parts of defoaming agent, 2 parts of silane coupling agent share.

[0032]The preparation method of the medium and high temperature solar selective absorption coating is as follows:

[0033] (1) Preparation of absorbent pigment: raw material powder CuO, CoO, MnO 2 Sand-milling and mixing were carried out, and the composite agglomerated powder was prepared by spray granulation method. After the composite agglomerated powder was placed in a muffle furnace and calcined at 1000°C for 5 hours, CuCoMnO x Composite agglomeration functional powder;

[0034] (2) Take the raw materials by weighing the above-mentioned...

Embodiment 2

[0044] A medium-high temperature solar selective absorption coating formula, which consists of the following raw materials in parts by weight: 40 parts of silicone resin, CuCoMnO x 30 parts of functional powder, 20 parts of xylene, 2.5 parts of wetting and dispersing agent (1:1 between disponer 904s and 9250), 2.5 parts of leveling agent, 2 parts of leveling agent, 1.5 parts of defoamer, 1.5 parts of silane coupling agent share.

[0045] The preparation method of the medium and high temperature solar selective absorption coating is as follows:

[0046] (1) Preparation of absorbent pigment: raw material powder CuO, CoO, MnO 2 Sand-milling and mixing were carried out, and the composite agglomerated powder was prepared by spray granulation method. After the composite agglomerated powder was placed in a muffle furnace and calcined at 1000°C for 6 hours, CuCoMnO x Composite agglomeration functional powder;

[0047] (2) Take the raw materials by weighing the above-mentioned propo...

Embodiment 3

[0057] A medium-high temperature solar selective absorption coating formula, which consists of the following raw materials in parts by weight: 35 parts of silicone resin, CuCoMnO x 35 parts of functional powder, 15 parts of xylene, 3.75 parts of wetting and dispersing agent (disponer 904s), 3.75 parts of anti-settling agent, 4 parts of leveling agent, 2 parts of defoaming agent, and 1.5 parts of silane coupling agent.

[0058] The preparation method of the medium and high temperature solar selective absorption coating is as follows:

[0059] (1) Preparation of absorbent pigment: raw material powder CuO, CoO, MnO 2 Sand-milling and mixing were carried out, and the composite agglomerated powder was prepared by spray granulation method. After the composite agglomerated powder was placed in a muffle furnace and calcined at 1200°C for 5.5 hours, CuCoMnO x Composite agglomeration functional powder;

[0060] (2) Take the raw materials by weighing the above-mentioned proportioning b...

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Abstract

The invention provides a medium-high temperature solar energy selective absorption coating layer and a preparation method thereof. The coating layer is prepared from the following raw materials in parts by weight: 30-40 parts of organosilicone resin, 30-40 parts of a CuCoMnOx functional powder, 10-20 parts of xylene, 2.5-5 parts of a wetting dispersant, 2.5-5 parts of an antisettling agent, 3-5 parts of a leveling agent, 1-3 parts of a defoaming agent and 1-2 parts of a silane coupling agent. The solar energy selective absorption coating layer has the advantages of high absorption rate, high heat conductivity, low radiation rate and high stability, and effectively improves the selective absorption of solar energy by a heat absorbing coating; and the preparation process is simple, the costis low, the equipment requirements are low, the production process is environmentally friendly, and the preparation method is prone to industrialized production and is suitable for large-scale promotion and application.

Description

technical field [0001] The invention relates to the technical field of photothermal solar energy, in particular to a medium-high temperature solar selective absorption coating and a preparation method thereof. Background technique [0002] With domestic energy and environmental protection issues, solar energy, as a renewable energy with the most abundant sources and widely available, plays a major role in solving energy crisis and environmental problems, and solar energy is universal with its unique reserves and unlimited , The cleanliness of development and utilization makes it a hot spot of competing research in various countries. Solar thermal application is one of the simplest, most direct, and most effective ways for human beings to utilize solar energy. However, due to the small and discontinuous energy density of solar energy after reaching the earth, it has brought difficulties to large-scale development and utilization. The solar spectrum selective absorption coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/32C09D5/16C09D7/62C09D7/63C09D7/65
CPCC09D183/04C08K2003/2248C08K2003/2255C08K2003/2289C08L2201/08C09D5/1675C09D5/1687C09D5/18C09D5/32C08L83/12C08K13/06C08K9/00C08K3/22C08K3/346C08K5/5419
Inventor 程旭东丁思宇毛家玮曾鲜
Owner WUHAN UNIV OF TECH
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