CN103740149A - Solar heat-absorbing coating - Google Patents
Solar heat-absorbing coating Download PDFInfo
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- CN103740149A CN103740149A CN201310752902.6A CN201310752902A CN103740149A CN 103740149 A CN103740149 A CN 103740149A CN 201310752902 A CN201310752902 A CN 201310752902A CN 103740149 A CN103740149 A CN 103740149A
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Abstract
The invention discloses a solar heat-absorbing coating. The solar heat-absorbing coating is prepared by uniformly mixing 8-10 parts of carbon black, 1-2 parts of manganese dioxide, 2-3 parts of lithopone, 1-3 parts of lead powder and 0.1-0.3 part of calcium chloride and then adding solid sodium silicate of which the weight is 4-5 times the total weight. The prepared solar heat-absorbing coating is high in absorption efficiency, wide in application range, particularly applicable to southern regions with a large number of rainy days, long in service life and low in cost. The heat efficiency of a water heater is greater than 75 percent.
Description
Technical field
The present invention relates to a kind of solar energy heat absorbing coating, belong to field of solar collectors.
Background technology
The utilization of sun power mainly contains the conversion of light-electricity, light-chemical transformation (photochemical catalysis and hydrogen manufacturing) and photo-thermal conversion.Solar energy collector is the device that sun power is directly converted to heat energy, and solar energy collector can be divided into middle low temperature, the large class of middle high temperature heat collector two according to purposes.Middle low-temperature heat collection device technology is widely used on solar water heater and single-action refrigerator air-conditioning, and the main application of middle high temperature heat collector is dual-effect refrigeration agent air-conditioning and solar heat power station.Solar energy heating technology does not consume mineral fuel, pollution-free, widely applicable, become field of solar energy utilization main direction.
According to international new forms of energy development trend, solar thermal utilization has ample scope for one's abilities in substitute fossil fuels generating and terminal utilization.Solar thermal utilization has wide Application Areas, but most importantly solar energy thermal-power-generating and energy for building (comprising heating, air-conditioning and hot water) at present.In China, technology maturation, and formed the solar water heating system that only has of industry.
In existing solar energy heat absorbing coating, generally adopting lustreless paint is heat-absorbing paint, is mainly carbon black, titanium dioxide etc., and containing binder constituents, the feature of this coating is that cost is low, but not high to the specific absorption of sunlight, making the thermo-efficiency of water-heater is only 30-40%, and the coating life-span is short.
Summary of the invention
The present invention, for overcoming deficiency of the prior art, provides a kind of solar energy heat absorbing coating and preparation method thereof.
The present invention is achieved through the following technical solutions:
The present invention is comprised of as tackiness agent heat-sink material and solid-state water glass, and wherein, described heat-sink material is comprised of the material of following weight ratio:
8-10 part carbon black, 1-2 part Manganse Dioxide, 2-3 part lithopone, 1-3 part lead powder, 0.1-0.3 part calcium chloride;
Be preferably 9 parts of carbon blacks, 1 part of Manganse Dioxide, 2 parts of lithopones, 1 part of lead powder, 0.2 part of calcium chloride.
After each component is mixed, then add gross weight 4-5 tackiness agent doubly, obtain.
Concrete method for making is: by load weighted weight ratio, by carbon black, Manganse Dioxide, lithopone, lead powder, below calcium chloride co-grinding to 30 μ m, mix, then add solid-state water glass, heat up solid-state water glass is liquefied, mix rear cooling, obtain.
The spectral selectivity of coating realizes by color bodies, and selecting of color bodies should coach with the bound level theory of the band theory of solid matter and dispersed particle size.This is because the absorption of sunlight is a kind of Spectral Phenomenon, if the bond energy gap of color bodies and size bound level match with the photon energy of sunlight, will there is extinction in color bodies, solar energy mainly concentrates on 0.4-0.8 mu m waveband, corresponding energy is 1.543-3.085eV, the present invention is through screening, select the carbon black of specified proportion, Manganse Dioxide, lithopone, lead powder, calcium chloride and solid-state water glass are made, can better mate with this photon, the solar energy heat absorbing coating assimilated efficiency that the present invention makes is high, water-heater thermo-efficiency reaches more than 75%, applied range, be particularly suitable for and the overcast and rainy more areas such as south, and long service life, with low cost.
embodiment
Embodiment 1
By weight, by 8 parts of carbon blacks, 1 part of Manganse Dioxide, 2 parts of lithopones, 1 part of lead powder, 0.1 part of calcium chloride, and the solid-state water glass composition of 4 times of aforementioned gross weights;
Concrete method for making is: by load weighted weight ratio, by carbon black, Manganse Dioxide, lithopone, lead powder, below calcium chloride co-grinding to 30 μ m, mix, then add solid-state water glass, heat up solid-state water glass is liquefied, mix rear cooling, obtain.
Embodiment 2
By weight, by 10 parts of carbon blacks, 2 parts of Manganse Dioxide, 3 parts of lithopones, 4 parts of lead powder, 0.3 part of calcium chloride, and the solid-state water glass composition of 5 times of aforementioned gross weights; Preparation method is with embodiment 1.
Embodiment 3
By weight, by 9 parts of carbon blacks, 1 part of Manganse Dioxide, 2 parts of lithopones, 3 parts of lead powder, 0.2 part of calcium chloride, and the solid-state water glass composition of 5 times of aforementioned gross weights, preparation method is with embodiment 1.
Embodiment 4
By weight, by 8 parts of carbon blacks, 2 parts of Manganse Dioxide, 1 part of lithopone, 3 parts of lead powder, 0.3 part of calcium chloride, and the solid-state water glass composition of 5 times of aforementioned gross weights, preparation method is with embodiment 1.
The coating that embodiment 1 is made carries out performance test:
Made coating is coated in to sticking power, shock-resistance, snappiness, water tolerance, the oil-proofness of on the tinplate of 50 × 120 × 0.2mm, testing coating, paint spay-coating is tested on the steel plate of 80 × 120 × 1mm to the weathering resistance of coating, coating is coated in to normal emittance and the specific absorption of on the aluminium sheet of 60 × 60 × 1mm, testing coating, coat-thickness 30-35um.After dry 24h, measure, method adopts national standard.
1) coating color is black,
2) 2 grades of sticking power
3) shock-resistance 50cm
4) snappiness 1mm
5) water tolerance 24h coating non-foaming, do not come off, wrinkle resistant
6) oil-proofness 24h coating non-foaming, do not come off, wrinkle resistant
7) weathering resistance (313 UV-light 300h), 1 grade
8) infrared emittance 0.890 (80 ° of C)
9) coating specific absorption 0.950
By same procedure, embodiment 2 is tested:
1) coating color is black,
2) 2 grades of sticking power
3) shock-resistance 50cm
4) snappiness 1mm
5) water tolerance 24h coating non-foaming, do not come off, wrinkle resistant
6) oil-proofness 24h coating non-foaming, do not come off, wrinkle resistant
7) weathering resistance (313 UV-light 300h), 1 grade
8) infrared emittance 0.892 (80 ° of C)
9) coating specific absorption 0.953
By same procedure, embodiment 3 is tested:
1) coating color is black,
2) 2 grades of sticking power
3) shock-resistance 50cm
4) snappiness 1mm
5) water tolerance 24h coating non-foaming, do not come off, wrinkle resistant
6) oil-proofness 24h coating non-foaming, do not come off, wrinkle resistant
7) weathering resistance (313 UV-light 300h), 1 grade
8) infrared emittance 0.894 (80 ° of C)
9) coating specific absorption 0.952
By same procedure, embodiment 4 is tested:
1) coating color is black,
2) 2 grades of sticking power
3) shock-resistance 50cm
4) snappiness 1mm
5) water tolerance 24h coating non-foaming, do not come off, wrinkle resistant
6) oil-proofness 24h coating non-foaming, do not come off, wrinkle resistant
7) weathering resistance (313 UV-light 300h), 1 grade
8) infrared emittance 0.894 (80 ° of C)
9) coating specific absorption 0.954.
Claims (3)
1. a solar energy heat absorbing coating, is characterized in that by weight, by 8-10 part carbon black, 1-2 part Manganse Dioxide, 2-3 part lithopone, 1-3 part lead powder, 0.1-0.3 part calcium chloride and gross weight 4-5 solid-state water glass doubly, is made.
2. a kind of solar energy heat absorbing coating according to claim 1, is characterized in that by weight, by the solid-state water glass of 4 times of 9 parts of carbon blacks, 1 part of Manganse Dioxide, 2 parts of lithopones, 1 part of lead powder, 0.2 part of calcium chloride and gross weights, is made.
3. the preparation method of a kind of solar energy heat absorbing coating according to claim 1 and 2, it is characterized in that: by load weighted weight ratio by carbon black, Manganse Dioxide, lithopone, lead powder, below calcium chloride co-grinding to 30 μ m, mix, add again solid-state water glass, intensification makes solid-state water glass liquefaction, mix rear cooling, obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752902.6A CN103740149A (en) | 2013-12-31 | 2013-12-31 | Solar heat-absorbing coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752902.6A CN103740149A (en) | 2013-12-31 | 2013-12-31 | Solar heat-absorbing coating |
Publications (1)
| Publication Number | Publication Date |
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| CN103740149A true CN103740149A (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310752902.6A Pending CN103740149A (en) | 2013-12-31 | 2013-12-31 | Solar heat-absorbing coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104151880A (en) * | 2014-08-18 | 2014-11-19 | 太仓派欧技术咨询服务有限公司 | Nanometer carbon powder modified solar heat absorption coating |
| CN106555177A (en) * | 2015-09-29 | 2017-04-05 | 淄博环能海臣环保技术服务有限公司 | One kind thermally decomposes to generate high temperature resistant selective absorbing functional membrane |
| CN107603424A (en) * | 2017-08-30 | 2018-01-19 | 蚌埠市好思家太阳能有限公司 | A kind of wall-hanging solar water heater heat-absorbing paint and its preparation technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071674A (en) * | 1992-08-06 | 1993-05-05 | 张云山 | A kind of passive solarenergy water heater's heat-absorbing paint |
| CN102825856A (en) * | 2012-08-13 | 2012-12-19 | 吴江市聚力机械有限公司 | Thermal absorption and insulation composite lining cloth |
-
2013
- 2013-12-31 CN CN201310752902.6A patent/CN103740149A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071674A (en) * | 1992-08-06 | 1993-05-05 | 张云山 | A kind of passive solarenergy water heater's heat-absorbing paint |
| CN102825856A (en) * | 2012-08-13 | 2012-12-19 | 吴江市聚力机械有限公司 | Thermal absorption and insulation composite lining cloth |
Non-Patent Citations (1)
| Title |
|---|
| 刘程等: "《表面活性剂性质理论与应用》", 30 June 2003, 北京工业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104151880A (en) * | 2014-08-18 | 2014-11-19 | 太仓派欧技术咨询服务有限公司 | Nanometer carbon powder modified solar heat absorption coating |
| CN106555177A (en) * | 2015-09-29 | 2017-04-05 | 淄博环能海臣环保技术服务有限公司 | One kind thermally decomposes to generate high temperature resistant selective absorbing functional membrane |
| WO2017054781A1 (en) * | 2015-09-29 | 2017-04-06 | 淄博环能海臣环保技术服务有限公司 | High-temperature-resistant selective absorption functional membrane generated by thermal decomposition |
| CN107603424A (en) * | 2017-08-30 | 2018-01-19 | 蚌埠市好思家太阳能有限公司 | A kind of wall-hanging solar water heater heat-absorbing paint and its preparation technology |
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Application publication date: 20140423 |