Flat plate solar energy heat absorption coating

Abstract

The invention discloses a flat plate solar energy heat absorption coating. A light absorption agent, a film forming agent, a solvent and an addition agent are evenly scattered in a ball milling mode, then a film forming addition agent is added into the mixture to be mixed to be uniform, and therefore the flat plate solar energy heat absorption coating is obtained. The flat plate solar energy heat absorption coating is prepared from, by weight, 50-100 parts of the film forming agent, 10-30 parts of the film forming addition agent, 35-55 parts of the light absorption agent, 20-50 parts of the solvent and 10-30 part of the addition agent. The film forming addition agent is ethylene glycol monobutyl ether, triethylene glycol monomethyl and the like. A preparation method of the film forming agent comprises the steps that casein and gelatin are mixed according to the weight ratio of 5-10:2-3, water is added into the mixture, the mixture is soaked at the temperature of 15-22 DEG C and then transferred to a plate under the normal temperature, a mixture solution with methyl methacrylate and polysiloxane quaternary ammonium sodium with the ratio of parts by weight of 1-2:1-3, the mixture is stirred and then irradiated by ultraviolet light for 10-15 min, and then modified casein-gelatin is obtained. The film forming agent is modified and then used as the important raw material of the coating, so that the prepared coating has the good weather resistance and water resistance under the outdoor conditions, the preparation technology is simple and easy to understand, and the heat absorption efficiency of the heat absorption coating is ensured.

Description

technical field [0001] The invention relates to heat-absorbing materials, in particular to a flat solar heat-absorbing paint. Background technique [0002] Energy utilization plays a pivotal role in the development of human society, but the excessive development of resources and inefficient resource utilization make human beings face a severe test. As we all know, solar energy is the most abundant and widely available renewable energy, which plays a major role in solving energy crisis and environmental problems. , making it a hot research topic in various countries. Our country is rich in solar energy resources and has broad prospects for solar energy utilization. At present, it is the first user and producer of solar water heaters in the world. [0003] 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...

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Problems solved by technology

[0005] The current solar heat-absorbing coatings are full of researches specifically aimed at the weather resistance and water resistance of solar energy coatings. Nowadays, nano-materials are used as raw materials for heat-absorbing materials, which can improve the weather resistance and heat-absorbing efficiency of coatings. For example, Chinese patent CN102286243A , but the cost is extremely high; there are also changes in the formulation of pigments to improve the weather resistance of the prepared coatings, such as Chinese patent CN102134428B, but its preparation process is complicated and requires high

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