Formation method of high-performance selective absorption treatment membrane
A selective, membrane-treating technology, applied in solar thermal power generation, metal material coating process, heating devices, etc., can solve the problem of failing to achieve the heat-collecting properties of selective absorption treatment membranes, and improve the selective absorption performance, The effect of improving thermal efficiency and film density
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[0054] Hereinafter, the present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited thereto.
Embodiment 1~12、 comparative example 1~13)
[0056] In the following treatment solution, the stainless steel plate (SUS444) was reacted at the immersion time and sulfate concentration shown in Tables 1 to 3 while the stainless steel plate (SUS444) was in a treatment bath at 116°C. It should be noted that Fe 2 (SO 4 ) 3 and Cr 2 (SO 4 ) 3 Add in equal amounts. The raw materials of the treatment liquid used are reagents from Kanto Chemical Co., Ltd., Japan.
[0057] [Treatment liquid components]
[0058]
[0059] The evaluation of selective absorption characteristics was carried out as described below.
[0060] The absorption rate α is calculated by measuring the reflectance R in the UV, visible light, and near-infrared regions (300-2100 nm) using JASCO Corporation V-570, and using the formulas I and II of the following formula 1.
[0061] The emissivity ε was calculated by measuring the reflectance R in the infrared region (2500-25000 nm) using the FT / IR-400 manufactured by JASCO Corporation, and using the form...
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