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Selective solar heat absorption coating with low emission ratio and preparation method for selective solar heat absorption coating

A technology of solar heat and absorbing coatings, applied in photovoltaic power generation, climate sustainability, final product manufacturing, etc., can solve the problems of limited coating thickness, low emissivity ratio, unfavorable mass production, etc. Excellent performance and practicality

Inactive Publication Date: 2015-04-08
福建新越金属材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a low emissivity selective solar heat absorbing coating and a preparation method thereof. Defects that favor mass production

Method used

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  • Selective solar heat absorption coating with low emission ratio and preparation method for selective solar heat absorption coating
  • Selective solar heat absorption coating with low emission ratio and preparation method for selective solar heat absorption coating
  • Selective solar heat absorption coating with low emission ratio and preparation method for selective solar heat absorption coating

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preparation example Construction

[0031] A method for preparing a selective solar heat absorbing coating, comprising the following steps:

[0032] Step 1. Using DC magnetron sputtering process or AC magnetron sputtering process, aluminum strip, stainless steel strip or copper strip is used as metal strip substrate 5, and a layer is plated on the metal strip substrate 5 for improving and Thin-film coating 6 for improving adhesion and / or corrosion resistance of selective solar heat absorbing coatings, wherein the thin-film coating 6 consists of at least one metal, at least one metal oxide, at least one metal nitride , at least one metal oxynitride or any combination of the above metals, metal oxides, metal nitrides and metal oxynitrides.

[0033] Step 2, using a large-area electron beam evaporation coating process, using aluminum, copper or silver as the evaporation material, and coating a layer of high reflection base layer 4 on the thin film coating 6 prepared in step 1.

[0034] Step 3. Using electron beam e...

Embodiment 1

[0041] An antireflection layer based on a TCO material, comprising a TCO transparent conductive oxide coating 2 as a secondary antireflection layer and a SiO2 (SiOx) oxide coating 1 as a main antireflection layer, the SiO2 (SiOx) The oxide coating 1 covers the TCO transparent conductive oxide coating 2 . The TCO transparent conductive oxide coating 2 is prepared by a DC magnetron sputtering process using a composite TCO target. The SiO2 (SiOx) coating is prepared by using electron beam evaporation or AC magnetron sputtering process. The composite TCO target is a metal oxide or a mixture of metal oxides. The composite TCO target material is ZnO:Al2O3 (AZO).

[0042] In this embodiment, AZO, a semi-conductive coating material with a high refractive index, can replace the secondary anti-reflection layer material in the middle sub-layer structure of the traditional selective solar heat absorption coating film system. Compared with the sub-anti-reflection layer material (usually...

Embodiment 2

[0045] An antireflection layer based on a TCO material, comprising a TCO transparent conductive oxide coating 2 as a secondary antireflection layer and a SiO2 (SiOx) oxide coating 1 as a main antireflection layer, the SiO2 (SiOx) The oxide coating 1 covers the TCO transparent conductive oxide coating 2 . The TCO transparent conductive oxide coating 2 is prepared by a DC magnetron sputtering process using a composite TCO target. The SiO2 (SiOx) coating is prepared by using electron beam evaporation or AC magnetron sputtering process. The composite TCO target is a metal oxide or a mixture of metal oxides. The composite TCO target is ZnO:Ga2O3 (GZO).

[0046] In this embodiment, GZO, a semi-conductive coating material with a relatively high refractive index, can replace the secondary anti-reflection layer material in the middle sub-layer structure of the traditional selective solar heat absorption coating film system. Compared with the sub-anti-reflection layer material (usual...

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Abstract

The invention discloses a selective solar heat absorption coating with a low emission ratio, sequentially comprising an anti-reflection layer, a main absorptive coating and a high-reflection substrate layer from top to bottom, wherein the high-reflection substrate layer is prepared by a large-area electron beam evaporation coating technology; evaporation materials used in the evaporation coating technology are aluminum, copper or silver. The invention further discloses a preparation method for the selective solar heat absorption coating with the low emission ratio. According to the selective solar heat absorption coating with the low emission ratio and the preparation method for the selective solar heat absorption coating with the low emission ratio, an infrared high-reflection substrate layer of the selective solar heat absorption coating is prepared by the large-area electron beam evaporation coating technology, the thickness of the infrared high-reflection substrate layer can be increased, and the selective solar heat absorption coating can easily have a lower infrared emission ratio through the thicker coating. The selective solar heat absorption coating is less influenced by base material conditions, and has the lower infrared emission ratio at the same time.

Description

technical field [0001] The invention relates to a selective solar heat absorption coating for a flat solar heat collector, in particular to a low emission ratio selective solar heat absorption coating and a preparation method thereof. Background technique [0002] For the application of flat-panel solar collectors, the most common and common preparation technique is to prepare selective solar heat absorbing coatings on metal plates. For now, the vast majority of selective solar heat absorbing coatings are made by vacuum coating. [0003] The vacuum coating method is used to prepare the selective solar heat absorption coating, which includes a multi-layer thin film structure to form a film system of the selective solar heat absorption coating. Typically, selective solar heat absorbing coatings include a highly reflective substrate with low infrared emissivity. One or more intermediate sublayers are stacked on the infrared high reflection base layer, and this intermediate su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0216
CPCH01L31/02168H01L31/18Y02E10/50Y02P70/50
Inventor 马丁瑞纳眭凌杰
Owner 福建新越金属材料科技有限公司
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