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Bulk absorption type solar selective heat absorption paint and preparation method and application thereof

A technology of heat-absorbing paint and solar energy, applied in the direction of radiation-absorbing paint, coating, etc., can solve the problem of high thermal emissivity, and achieve the effect of low thermal emissivity, prominent thermal absorption rate, and reduced thermal emissivity.

Active Publication Date: 2015-12-09
清远慧谷新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the shortcomings and shortcomings of high heat radiation rate in the existing selective heat-absorbing coatings mentioned above, the primary purpose of the present invention is to provide a volume-absorbing solar selective heat-absorbing coating

Method used

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  • Bulk absorption type solar selective heat absorption paint and preparation method and application thereof
  • Bulk absorption type solar selective heat absorption paint and preparation method and application thereof
  • Bulk absorption type solar selective heat absorption paint and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: Preparation of solar energy selective heat-absorbing coating

[0035] The basic formula is shown in Table 1, and the specific preparation method is as follows:

[0036] Add dispersant BYK-161 to part of n-propyl acetate and dimethyl succinate, stir well to dissolve. Add iron-manganese black powder, copper oxide powder, and Degussa 4# carbon black to the above mixed solution, stir and disperse for 2 hours, grind to the specified fineness with a sand mill, and prepare carbon black-iron-manganese black composite slurry material; then add DSM resin URACRONCR204CM40, fully etherified amino resin, p-toluenesulfonic acid, Lianjie YX-909-B-72, the remaining n-propyl acetate and dimethyl succinate to the above In the carbon black-iron manganese black composite slurry, disperse at high speed for 1 hour; then add leveling agent BYK-340 and defoamer BYK-066N, and disperse at high speed for 0.5 hour to obtain a coating.

[0037] The formula of table 1 solar energy se...

Embodiment 2

[0039] Embodiment 2: Preparation of solar energy selective heat-absorbing coating

[0040] The basic formula is shown in Table 2, and the specific preparation method is as follows:

[0041]Add dispersant BYK-161 to part of methyl isobutyl ketone and ethyl acetate, stir evenly to dissolve it. Add iron-manganese black powder, copper oxide powder, and Cabot 330R to the above mixed solution, stir and disperse for 2 hours, grind to a specified fineness with a sand mill, and prepare carbon black-iron-manganese black composite slurry; Add DSM resin URACRONCR204CM40, partially methylated amino resin, p-toluenesulfonic acid, Lianjie YX-909-B-72, the remaining methyl isobutyl ketone and ethyl acetate to the above carbon black-iron manganese In the black composite slurry, disperse at a high speed for 1 hour; then add leveling agent BYK-340 and defoamer BYK-066N, and disperse at a high speed for 0.5 hours to obtain a coating.

[0042] Table 2 The formula of solar energy selective heat-a...

Embodiment 3

[0044] Embodiment 3: Preparation of solar energy selective heat-absorbing coating

[0045] The basic formula is shown in Table 3, and the specific preparation method is as follows:

[0046] Add dispersant BYK-161 to part of ethyl acetate and methyl butanone, stir well to dissolve. Add iron-manganese black powder, copper oxide powder, and Cabot 330R to the above mixed solution, stir and disperse for 2 hours, grind to a specified fineness with a sand mill, and prepare carbon black-iron-manganese black composite slurry; Add DSM resin URACRONCR204CM40, partially methylated amino resin, p-toluenesulfonic acid, Lianjie YX-909-B-72, the remaining ethyl acetate and methyl butanone to the above carbon black - iron manganese black In the composite slurry, disperse at high speed for 1 hour; then add leveling agent HENSICH-143 and defoamer BYK-066N, and disperse at high speed for 0.5 hours to obtain a coating.

[0047] Formulation of table 3 solar energy selective heat-absorbing coating...

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Abstract

The invention belongs to the technical field of energy-saving paint and discloses bulk absorption type solar selective heat absorption paint and a preparation method and application thereof. The paint has sunlight selective absorption performance, and is high in photo-thermal conversion rate, good in protective performance and excellent in weather resistance. The paint is prepared from, by mass, 25%-33% of absorbent, 0%-5% of filler, 15%-20% of fluorocarbon resin, 2%-3% of dispersant, 3%-5% of crossk-linking agent, 0.1-0.3% of catalyst, 0.5%-1% of adhesion promoter, 0.2%-0.5% of defoamer, 0.2%-0.5% of flatting agent and 40%-50% of organic solvent. A coating obtained through the paint is a metal oxide-resin composite heat absorption coating, the solar absorption rate of the coating is larger than 93%, the radiance is smaller than 5%, and meanwhile excellent impact resistance, bending resistance, corrosion resistance, aging resistance and salt fog resistance are achieved; the paint can be applied to a solar heat collector.

Description

technical field [0001] The invention belongs to the technical field of energy-saving coatings, in particular to a body-absorbing solar selective heat-absorbing coating and its preparation method and application. The coating has selective absorption of sunlight, high light-to-heat conversion rate, good protection performance and good weather resistance. Background technique [0002] With the change of energy form, the reserves of conventional energy are decreasing day by day. It is the principle that energy construction should follow to replace high-carbon fossil energy with clean energy as much as possible. my country is the world's largest coal producer and consumer. Coal accounts for about 76% of the commodity energy consumption structure and is the main source of air pollution in my country. Vigorously developing new energy and renewable energy utilization technologies will become an important measure to reduce environmental pollution. [0003] The idea of ​​solar selec...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D5/32C09D7/12
Inventor 冯志德冀伟强曾小杭
Owner 清远慧谷新材料技术有限公司
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