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Preparation method for heat collection material and heat collection plate and heat collector with heat collection material

A heat-collecting plate and heat-collecting technology, which is applied in the field of solar collectors, can solve the problems of high production cost, complex configuration of electroplating solution, and environmental pollution.

Active Publication Date: 2014-01-22
SHENZHEN SMART SECURITY & SURVEILLANCE SERVICE ROBOT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the black chromium coating material is also a good heat absorbing material, its absorption rate is about 91%, the reflectivity is as high as 5%, and the absorption-emission ratio (α / ε) is close to 6-13; Prepared by electroless plating method, complex configuration of electroplating solution, high production cost and pollution to the environment

Method used

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  • Preparation method for heat collection material and heat collection plate and heat collector with heat collection material
  • Preparation method for heat collection material and heat collection plate and heat collector with heat collection material
  • Preparation method for heat collection material and heat collection plate and heat collector with heat collection material

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preparation example Construction

[0028] Such as figure 1 As shown, the present invention provides a preparation method of a heat collecting material, comprising: S1, dissolving benzene compounds and formaldehyde in water, adding a catalyst to generate an aqueous solution, and the molar ratio of the benzene compounds, formaldehyde and catalyst is 1: 1.5~2.5: 200~500; S2, heating the generated aqueous solution until a gel is formed, and extracting the gel; S3, performing solvent replacement on the gel to obtain a second gel; S4, making the second gel Carbonized after drying.

[0029] In the present invention, since both formaldehyde and catalyst can be added in the form of a solution, the volume of water is not limited here. During specific implementation, the dilution ratio of the solution obtained in step S1 can be 30 to 120, i.e. solvent / The solute is 30-120, the solvent in the solution obtained in step S1 is water, and the solute is benzene compounds, formaldehyde and a catalyst. During implementation, b...

no. 1 example

[0037] Weigh 5.4g of resorcinol and pour it into a beaker with 100ml of water for magnetic stirring. After the resorcinol is completely dissolved in the water, add 6.5ml of formaldehyde and continue magnetic stirring, then add 50ml of 0.05mol / L NaOH solution The solution acts as a catalyst, and when the color of the solution turns dark red, it is poured into a container and sealed. Then the above solution is heated in a drying oven at 50° C. until a gel is formed, and the gel is extracted and subjected to aging treatment. The aging treatment time is preferably 1 day to 2 days. Carry out solvent replacement next, in the present embodiment, have selected two kinds of selection solvents, wherein the first selection solvent is deionized water, the second selection solvent is acetone, because the surface tension of deionized water is greater than that of acetone, so first Soak the gel in deionized water. After a period of time, take out the gel soaked in deionized water and soak it...

no. 2 example

[0039] Weigh 6.4g of mixed toluene and pour it into a beaker containing 100ml of water for magnetic stirring. After resorcinol is completely dissolved in water, add 6.5ml of formaldehyde and continue magnetic stirring, then add 50ml of 0.05mol / L NaOH solution as Catalyst, when the color of the solution is dark red, pour into the container and seal it. Then the above solution is heated in a drying oven at 50° C. until a gel is formed, and the gel is extracted and subjected to aging treatment. The aging treatment time is preferably 1 day to 2 days. Carry out solvent replacement then, in the present embodiment, have selected three kinds of selection solvents, wherein the first selection solvent is deionized water, the second selection solvent is acetone, and the second selection solvent is ethanol, because deionized water, acetone, ethanol The surface tension of the three decreases sequentially, so first soak the gel in deionized water. After a period of time, take out the gel so...

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Abstract

The invention provides a preparation method for a heat collection material. The method comprises steps: step 1, benzene compounds and formaldehyde are dissolved in water with addition of catalysts to form an aqueous solution, the mol ratio of the benzene compounds, formaldehyde and the catalysts is 1:1.5-2.5:200-500; step 2, the formed aqueous solution is heated until gel is formed, and the gel is extracted; step 3, the gel is subjected to solvent replacement and second gel is obtained; step 4, the second gel is dried and subjected to carbonizing treatment. The heat collection material has abundant source and simple preparation method. The preparation method has no pollution to the environment. The artificially synthesized heat collection material is applied in a heat collection plate and a heat collector, and therefore the production cost is reduced. The heat collection material can be sprayed on a substrate directly, and applied in a heat collection plate and a heat collector, the device investment is further decreased and the production cost is controlled.

Description

technical field [0001] The invention relates to the technical field of solar heat collectors, in particular to a method for preparing a heat collecting material, a heat collecting plate and a heat collector with the heat collecting material. Background technique [0002] Solar energy is both primary energy and renewable energy. It is rich in resources, can be used for free, does not need to be transported, and has no pollution to the environment. As the most potential energy source in the 21st century, the solar energy industry has great development potential. Seize the opportunity and seize the opportunity to promote the efficient use of solar energy, which is conducive to the sustained, rapid and healthy development of the national economy, while protecting the ecological environment, it is also conducive to the construction of a new energy-saving and environmentally friendly society, and guides my country's energy-saving and energy-saving technologies to advance rapidly ...

Claims

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Application Information

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IPC IPC(8): C09K5/14F24J2/48F24J2/20F24S10/50
CPCY02E10/44
Inventor 卢辉黄卜夫龚灼
Owner SHENZHEN SMART SECURITY & SURVEILLANCE SERVICE ROBOT CO LTD