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A technology of solar heat absorption and coating, which is applied in the field of solar energy utilization, can solve the problems of poor weather resistance and water resistance, and achieve the effects of strong water resistance, high feasibility, and good adhesion
Inactive Publication Date: 2016-10-12
NANNING KEYU ENERGY TECH CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a solar heat-absorbing coating, which can solve the problem of poor weather resistance and water resistance of the heat-absorbing coating, and can ensure the heat-absorbing efficiency
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Embodiment 1
[0027] Solar energy heat-absorbing paint, the mass parts of raw materials are:
[0037] The step of preparing modified acrylate emulsion according to above-mentioned raw material is as follows:
[0038] (1) The preparation method of polyurethane-modified acrylate emulsion is as follows: in a nitrogen atmosphere, heat 5kg of acrylate to 70°C, the stirring speed is 100r / min, and ...
Embodiment 2
[0044] A kind of solar heat absorbing paint, raw material mass fraction is:
[0055] The step of preparing modified acrylate emulsion according to above-mentioned raw material is as follows:
[0056] (1) The preparation method of polyurethane-modified acrylate emulsion is as follows: in a nitrogen atmosphere,...
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Abstract
The invention discloses solar heat-absorbing paint which is prepared from the following components in parts by weight: 25-35 parts of an acrylate-modified composite emulsion, 2-6 parts of a fluorocarbon surfactant, 35-55 parts of a nano carbon powder and manganese dioxide mixture, 7-12 parts of a curing agent, 50-35 parts of a film forming agent, 1-3 parts of an absorption enhancer, 10-20 parts of a solvent, 5-10 parts of dispersants, and 0.5 to 0.7 part of a thickening agent, wherein the dispersants are sodium dodecyl sulfate and polyethylene glycol/polyvinyl pyrrolidone; the film forming agent is modified fibroin-gelatin; nano carbon powder is 10-20 nm in particle size, 150-180 m<2>/g in specific surface area and 90-95% in carbon content. The prepared solar heat-absorbing paint has excellent weather resistance and water resistance under the outdoor condition, the preparation process is simple and easy to understand, and the heat absorption efficiency of the heat-absorbing paint is further ensured.
Description
technical field [0001] The invention relates to the field of solar energy utilization, in particular to a solar heat absorbing paint. Background technique [0002] 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. For a long time, how to convert low-grade solar energy into high-grade thermal energy and enrich solar energy so as to maximize the use of solar energy has become a hot topic of research. Among the existing photothermal application technologies, selective absorption coating technology is recognized as the core technology, which plays a vital role in improving the efficiency of solar thermal conversion and promoting large-scale solar thermal applications. [0003] As we all know, solar energy absorbing coatings are ma...
Claims
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Application Information
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