A double-absorbing layer solar spectrum selective absorption coating and its preparation method

A technology of solar spectrum and absorption coating, which is applied in solar thermal devices, solar thermal power generation, chemical instruments and methods, etc., can solve the problem that the process stability has a great influence on the coating performance, the manufacturing process is complicated, and the coating has a high absorption rate. and other problems, to achieve the effects of excellent spectral selectivity, low requirements for required conditions, and simple preparation process
CN105222381BActive Publication Date: 2017-07-07CHINA BUILDING MATERIALS ACAD +1
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA BUILDING MATERIALS ACAD
Publication Date
2017-07-07

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the field of solar light selective absorption coatings, in particular to a double absorption layer solar spectrum selective absorption coating and a preparation method thereof. The preparation method comprises the following steps: cleaning the base layer; preparing an infrared reflection layer on the base layer by a coating method; preparing a double-structure absorbing layer on the infrared reflection layer by a coating method; An anti-reflection layer is prepared on the absorbing layer; the absorbing layer includes a high-refractive-index absorbing sublayer and a low-refractive-index absorbing sub-layer from bottom to top, and both the high-refractive-index absorbing sub-layer and the low-refractive-index absorbing sub-layer are made of Coating methods are prepared sequentially. The absorbing coating is prepared by the above-mentioned preparation method. The coating preparation method has simple process and low requirements for coating equipment, and is suitable for large-scale and low-cost production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of spectrally selective absorption coatings, in particular to a double-absorbing layer solar spectrum selective absorption coating and a preparation method thereof. Background technique

[0002] The solar spectrum selective absorption coating is the core material to realize the conversion of solar energy to heat. On the one hand, it has a high absorption rate in the solar light band (0.3μm-2.5μm), absorbing sunlight energy and converting it into heat energy, and the other On the one hand, it has a low emissivity in the infrared thermal radiation band (2.5μm-50μm), which can effectively suppress radiation heat dissipation. One of the important indicators to measure the selective absorption performance of the coating is the ratio of the solar spectral absorptivity α to the infrared radiation rate ε(T), α / ε, the larger the value of α / ε, the more suitable for medium and high temperature applications above 200°C.

[0003] ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More