CN109627863A - A kind of plate solar collector heat-absorbing paint - Google Patents
A kind of plate solar collector heat-absorbing paint Download PDFInfo
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- CN109627863A CN109627863A CN201811356809.2A CN201811356809A CN109627863A CN 109627863 A CN109627863 A CN 109627863A CN 201811356809 A CN201811356809 A CN 201811356809A CN 109627863 A CN109627863 A CN 109627863A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0843—Cobalt
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0862—Nickel
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The present invention relates to solar environment friendly field of material technology, and in particular to a kind of plate solar collector heat-absorbing paint.According to mass percent, the component of heat-absorbing paint includes: heat absorbent 30-35%, and solidified resin 15-25%, coalescing agent 2-6%, surplus is solvent；Heat absorbent is the solid mixt after photo-thermal sensitized treatment: containing black carbon black, ferrimanganic, phthalocyanine blue, anatase titanium dioxide and silicon carbide in heat absorbent, further includes the permivar micro mist no more than 5wt%；Solidified resin selects fluorocarbon resin, polyurethane resin, epoxy resin or silicone resin；Solvent be one of acetone, cyclohexanone, dimethylbenzene and butyl acetate etc. quality compare mixture.The coating has better absorptive rate of radiation and photothermal conversion rate compared with conventional heat-absorbing paint, prepares suitable for flat plate collector.
Description
Technical field
The present invention relates to solar environment friendly field of material technology, and in particular to a kind of plate solar collector heat absorption painting
Material.
Background technique
The clean energy resourcies such as wind energy, water energy, geothermal energy, solar energy, nuclear energy are the directions of future source of energy industry development.Solar energy
The form of most important clean energy resource, the safety and environmental protection the most in all new energy types, available energy reserve nor
Chang great, development prospect are boundless.The technology path of Solar use mainly includes photovoltaic and two kinds of photo-thermal, wherein solar energy
For photothermal technique in ordinary user lives, most important application is exactly solar water heater product.Conventional solar energy in the market
Water heater includes vacuum tube type and two kinds plate, and the core devices of plate type solar water heater are flat plate collector, plate
The heat absorbing element of solar thermal collector is metal absorber plate, the general copper of metal absorber plate or aluminium material, and heat absorption plate surface is the sun
The coating for selective absorption of light；It is medium runner among absorber plate, one piece of heat collector is welded by several pieces of absorber plates and upper and lower thermal-collecting tube
Composition, metal outer frame and back thermal insulation material are connect, the glass of high transparency is covered with above heat absorbing coating.
It shining upon on flat plate collector, part luminous energy is converted to the interior energy of material by the photo-thermal effect of heat absorbing coating,
Medium is transferred heat to by heat transfer again, to heat to water, the Heat-collecting effect master of plate type solar water heater
To depend on the photothermal conversion rate of heat absorbing coating and the thermal insulation property of the circulatory system on heat collector.Therefore heat absorption how is improved to apply
The photothermal conversion efficiency of layer becomes the key factor for improving solar water heater performance.People generally will use black material,
As heat absorption layer material, this is because black material is minimum to the reflection of light, therefore light can be maximally utilized, to reach
To more preferable thermal transition efficiency.Chinese invention patent Authorization Notice No. CN105713502B discloses a kind of sun that absorptivity is high
Can heat-absorbing paint, in the technical scheme, the heat absorbent ingredient of selection include channel black, iron oxide black, modified phthalocyanine blue and
The materials such as pigment scarlet powder, the color of these materials is in black, less to the reflection of light, therefore more radiation can be absorbed.Though
Right this black material is more preferable to the radiation absorption effect of sunlight, but the photothermal conversion rate of material does not obtain larger mention
Rise, the luminous energy of absorption be efficiently converted into it is interior can part it is relatively fewer, it is still relatively low to eventually lead to photothermal conversion efficiency.
Light action is in material and referred to as photo-thermal effect the phenomenon that part energy is changed into thermal energy；Photothermal spectroscopy refer to because
Photo-thermal effect generate thermal energy according to radiant light wavelength distribution.According to this principle, from ultraviolet to infrared waves in sunlight
For the electromagnetic radiation of long range when substance, the quality of atom is too big for photon energy, does not have significant reaction,
Light is only directly acted on electronics therein.So the optical property of material is determined by the energy state of its valence electron.Bound electron response
It is weaker；Free electron then can absorb the energy of field and is accelerated.Outfield mechanical periodicity, oscillating electron can be discharged by re-radiation
The energy absorbed, or the atom frequent impact with material, are transmitted to lattice for energy.The former shows as light reflection, then
Luminous energy is then finally changed into thermal energy by person.Want to improve photothermal conversion efficiency, needs to carry out infrared light and red, orange, sodium yellow
Effective use.In order to maximally utilize the infrared ray in sunray and the radiant light of long wavelength, need to heat absorption layer material into
Row improvement improves material to the susceptibility of long-wave radiation in light, and promotes the efficiency that material converts light energy into interior energy.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of plate solar collector heat-absorbing paints；
The coating has better absorptive rate of radiation and photothermal conversion rate compared with conventional heat-absorbing paint, is suitable for flat heat collecting
Device preparation.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of plate solar collector heat-absorbing paint, according to mass percent, the component of heat-absorbing paint includes: heat absorption
Agent 30-35%, solidified resin 15-25%, coalescing agent 2-6%, surplus are solvent；
Wherein, heat absorbent is the solid mixt after photo-thermal sensitized treatment, and the method for photo-thermal sensitized treatment includes such as
Lower step:
(1) by heat absorbent component ball milling, wash cycles are carried out using acetone solvent and deionized water respectively；
(2) heat absorbent after cleaning is added in photo-thermal sensitization A liquid according to the solid-to-liquid ratio of 1:5, while is sensitized to photo-thermal
The KBM-403 silane coupling agent of the sulfamic acid and 2.5wt% that account for heat absorbent quality 0.7wt% is added in A liquid, is uniformly dispersed simultaneously
Impregnation 45-60min, by heat absorbent filtering, dry after dipping；
(3) heat absorbent after upper step process is added in photo-thermal sensitization B liquid, is heated to according to the solid-to-liquid ratio of 1:3
47-52 DEG C, heat absorbent handles 6-10min in photo-thermal sensitization B liquid；Then deionized water wash cycles are used after heat absorbent being filtered
2-3 times, air drying after cleaning completes the photo-thermal sensitized treatment of heat absorbent.
Wherein, according to mass fraction, the component of photo-thermal sensitization A liquid includes:
3-5 parts of sodium citrate, 4-8 parts of copper sulphate, 2-5 parts of succinic acid, three 1-3 parts of (diethylamino) t-butyl carboxamide tantalums,
6-9 parts of methyl proxitol acetate, 15-18 parts of acetone, 50-55 parts of water.
The pH value that photo-thermal is sensitized A liquid is 3.2-3.6.
According to mass fraction, the component of the photo-thermal sensitization B liquid includes:
8-10 parts of dimethyl amine, 4,5- 1-3 parts of diphenyl-imidazoles, bis- [2- (2- acrylic)] the phenol 11- of 4,4'- sulfonyls
15 parts, 3-7 parts of ethylene glycol monoethylether acetate, 30-45 parts of ethyl lactate, 15-20 parts of water, 60-80 parts of ethyl alcohol.
The pH value that photo-thermal is sensitized B liquid is 8.5-9.5.
Preferably, black carbon black, ferrimanganic, phthalocyanine blue, anatase titanium dioxide and carbon are contained in the heat absorbent of heat-absorbing paint
SiClx, five mass fraction ratio are 8:5:2:2:1.
It preferably, further include the permivar micro mist for being no more than 5wt%, nickel element content in alloy powder in heat absorbent
30-32%, cobalt element content 4.8-6.2%.
Preferably, solidified resin selects fluorocarbon resin, polyurethane resin, epoxy resin or silicone resin；Solvent is third
One of ketone, cyclohexanone, dimethylbenzene and butyl acetate etc. quality compare mixture.
Preferably, coalescing agent includes defoaming agent, levelling agent and wetting dispersing agent, and the mass ratio of three is 1:1:2.
Heat-absorbing paint provided by the invention is applied to the heat absorbing coating preparation of flat plate collector in solar water heater, heat absorption
Coating is located at Copper base material or aluminium base surface.
The present invention have it is following the utility model has the advantages that
Heat absorbing coating of the invention uses black carbon black, ferrimanganic, phthalocyanine blue, anatase titanium dioxide, silicon carbide and nickel cobalt
For the materials such as alloy as heat absorbent, the color of this kind of materials is deeper, and absorptive rate of radiation is high, and thermal stability is prominent, very suitable
Cooperation is that heat-absorbing material uses.But also there is biggish blackness, therefore under the conditions of identical temperature, material is to extraneous spoke
It is lower to penetrate intensity, thermal loss is less.
Most of all, the present invention carries out special photo-thermal sensitized treatment to heat-absorbing material, after photo-thermal sensitized treatment
Heat-absorbing material, it is higher to the susceptibility of the long-wave radiation in sunlight ingredient, and can be more efficient by the luminous energy in long-wave radiation
Ground is converted into the interior energy of material, to significantly promote material to the components utilisings such as infrared light and red light, orange-colored light, sodium yellow
Rate；To improve the photothermal conversion efficiency of heat-sink shell.
Specific embodiment
Below with reference to embodiment, further description of the specific embodiments of the present invention, and following embodiment is only used for more
Technical solution of the present invention is clearly demonstrated, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of plate solar collector heat-absorbing paint, according to mass percent, the component of heat-absorbing paint includes: heat absorption
Agent 30%, solidified resin 15%, coalescing agent 2%, surplus are solvent；
Wherein, heat absorbent is the solid mixt after photo-thermal sensitized treatment, and the method for photo-thermal sensitized treatment includes such as
Lower step:
(1) by heat absorbent component ball milling, wash cycles are carried out using acetone solvent and deionized water respectively；
(2) heat absorbent after cleaning is added in photo-thermal sensitization A liquid according to the solid-to-liquid ratio of 1:5, while is sensitized to photo-thermal
The KBM-403 silane coupling agent of the sulfamic acid and 2.5wt% that account for heat absorbent quality 0.7wt% is added in A liquid, is uniformly dispersed simultaneously
Impregnation 45min, by heat absorbent filtering, dry after dipping；
(3) heat absorbent after upper step process is added in photo-thermal sensitization B liquid according to the solid-to-liquid ratio of 1:3, is heated to 47
DEG C, heat absorbent handles 6min in photo-thermal sensitization B liquid；Then it is used deionized water wash cycles 2 times after heat absorbent being filtered, cleaning
Air drying afterwards completes the photo-thermal sensitized treatment of heat absorbent.
Wherein, according to mass fraction, the component of photo-thermal sensitization A liquid includes:
3 parts of sodium citrate, 4 parts of copper sulphate, 2 parts of succinic acid, three 1 part of (diethylamino) t-butyl carboxamide tantalums, propylene glycol first
6 parts of base ether acetic acid ester, 15 parts of acetone, 50 parts of water.
The pH value that photo-thermal is sensitized A liquid is 3.2.
According to mass fraction, the component of the photo-thermal sensitization B liquid includes:
8 parts of dimethyl amine, 4,5- 1 part of diphenyl-imidazoles, 11 parts of phenol of 4,4'- sulfonyls bis- [2- (2- acrylic)], second
3 parts of 2-ethoxyethanol acetic acid esters, 30 parts of ethyl lactate, 15 parts of water, 60 parts of ethyl alcohol.
The pH value that photo-thermal is sensitized B liquid is 8.5.
In the heat absorbent of heat-absorbing paint containing carbon black, ferrimanganic is black, phthalocyanine blue, anatase titanium dioxide and silicon carbide, five
The mass fraction ratio of person is 8:5:2:2:1.
It further include the permivar micro mist no more than 5wt%, nickel element content 30% in alloy powder, cobalt in heat absorbent
Constituent content 4.8%.
Solidified resin selects fluorocarbon resin；Solvent be acetone and butyl acetate etc. quality compare mixture.
Coalescing agent includes defoaming agent, levelling agent and wetting dispersing agent, and the mass ratio of three is 1:1:2.
Heat-absorbing paint provided in this embodiment is applied to the heat absorbing coating preparation of flat plate collector in solar water heater, inhales
Hot coating is located at Copper base material surface.
Embodiment 2
A kind of plate solar collector heat-absorbing paint, according to mass percent, the component of heat-absorbing paint includes: heat absorption
Agent 35%, solidified resin 25%, coalescing agent 6%, surplus are solvent；
Wherein, heat absorbent is the solid mixt after photo-thermal sensitized treatment, and the method for photo-thermal sensitized treatment includes such as
Lower step:
(1) by heat absorbent component ball milling, wash cycles are carried out using acetone solvent and deionized water respectively；
(2) heat absorbent after cleaning is added in photo-thermal sensitization A liquid according to the solid-to-liquid ratio of 1:5, while is sensitized to photo-thermal
The KBM-403 silane coupling agent of the sulfamic acid and 2.5wt% that account for heat absorbent quality 0.7wt% is added in A liquid, is uniformly dispersed simultaneously
Impregnation 60min, by heat absorbent filtering, dry after dipping；
(3) heat absorbent after upper step process is added in photo-thermal sensitization B liquid according to the solid-to-liquid ratio of 1:3, is heated to 52
DEG C, heat absorbent handles 10min in photo-thermal sensitization B liquid；Then with deionized water wash cycles 3 times after heat absorbent being filtered, clearly
Rear air drying is washed, the photo-thermal sensitized treatment of heat absorbent is completed.
Wherein, according to mass fraction, the component of photo-thermal sensitization A liquid includes:
5 parts of sodium citrate, 8 parts of copper sulphate, 5 parts of succinic acid, three 3 parts of (diethylamino) t-butyl carboxamide tantalums, propylene glycol first
9 parts of base ether acetic acid ester, 18 parts of acetone, 55 parts of water.
The pH value that photo-thermal is sensitized A liquid is 3.6.
According to mass fraction, the component of the photo-thermal sensitization B liquid includes:
10 parts of dimethyl amine, 4,5- 3 parts of diphenyl-imidazoles, 15 parts of phenol of 4,4'- sulfonyls bis- [2- (2- acrylic)], second
7 parts of 2-ethoxyethanol acetic acid esters, 45 parts of ethyl lactate, 20 parts of water, 80 parts of ethyl alcohol.
The pH value that photo-thermal is sensitized B liquid is 9.5.
In the heat absorbent of heat-absorbing paint containing carbon black, ferrimanganic is black, phthalocyanine blue, anatase titanium dioxide and silicon carbide, five
The mass fraction ratio of person is 8:5:2:2:1.
It further include the permivar micro mist no more than 5wt%, nickel element content 32% in alloy powder, cobalt in heat absorbent
Constituent content 6.2%.
Solidified resin selects polyurethane resin；Solvent be cyclohexanone and butyl acetate etc. quality compare mixture.
Coalescing agent includes defoaming agent, levelling agent and wetting dispersing agent, and the mass ratio of three is 1:1:2.
Heat-absorbing paint provided in this embodiment is applied to the heat absorbing coating preparation of flat plate collector in solar water heater, inhales
Hot coating is located at aluminium base surface.
Embodiment 3
A kind of plate solar collector heat-absorbing paint, according to mass percent, the component of heat-absorbing paint includes: heat absorption
Agent 33%, solidified resin 20%, coalescing agent 4%, surplus are solvent；
Wherein, heat absorbent is the solid mixt after photo-thermal sensitized treatment, and the method for photo-thermal sensitized treatment includes such as
Lower step:
(1) by heat absorbent component ball milling, wash cycles are carried out using acetone solvent and deionized water respectively；
(2) heat absorbent after cleaning is added in photo-thermal sensitization A liquid according to the solid-to-liquid ratio of 1:5, while is sensitized to photo-thermal
The KBM-403 silane coupling agent of the sulfamic acid and 2.5wt% that account for heat absorbent quality 0.7wt% is added in A liquid, is uniformly dispersed simultaneously
Impregnation 55min, by heat absorbent filtering, dry after dipping；
(3) heat absorbent after upper step process is added in photo-thermal sensitization B liquid according to the solid-to-liquid ratio of 1:3, is heated to 50
DEG C, heat absorbent handles 8min in photo-thermal sensitization B liquid；Then it is used deionized water wash cycles 3 times after heat absorbent being filtered, cleaning
Air drying afterwards completes the photo-thermal sensitized treatment of heat absorbent.
Wherein, according to mass fraction, the component of photo-thermal sensitization A liquid includes:
4 parts of sodium citrate, 6 parts of copper sulphate, 4 parts of succinic acid, three 2 parts of (diethylamino) t-butyl carboxamide tantalums, propylene glycol first
8 parts of base ether acetic acid ester, 17 parts of acetone, 53 parts of water.
The pH value that photo-thermal is sensitized A liquid is 3.4.
According to mass fraction, the component of the photo-thermal sensitization B liquid includes:
9 parts of dimethyl amine, 4,5- 2 parts of diphenyl-imidazoles, 13 parts of phenol of 4,4'- sulfonyls bis- [2- (2- acrylic)], second
5 parts of 2-ethoxyethanol acetic acid esters, 40 parts of ethyl lactate, 18 parts of water, 70 parts of ethyl alcohol.
The pH value that photo-thermal is sensitized B liquid is 9.0.
In the heat absorbent of heat-absorbing paint containing carbon black, ferrimanganic is black, phthalocyanine blue, anatase titanium dioxide and silicon carbide, five
The mass fraction ratio of person is 8:5:2:2:1.
It further include the permivar micro mist no more than 5wt%, nickel element content 31% in alloy powder, cobalt in heat absorbent
Constituent content 5.5%.
Solidified resin selects epoxy resin；Solvent be dimethylbenzene and butyl acetate etc. quality compare mixture.
Coalescing agent includes defoaming agent, levelling agent and wetting dispersing agent, and the mass ratio of three is 1:1:2.
Heat-absorbing paint provided in this embodiment is applied to the heat absorbing coating preparation of flat plate collector in solar water heater, inhales
Hot coating is located at Copper base material surface.
Performance test
1, the film layer basic performance that heat-absorbing paint of the invention is formed in copper-based and alumina-base material is tested, test item includes
Adhesive force intensity, corrosion resistance, heat resistance and absorptivity obtain following test result:
Table 1: the filming performance of heat-absorbing paint in the present embodiment
Above-mentioned experimental result discovery is analyzed, the film layer effect of heat-absorbing paint provided by the invention is very good, with higher
Adhesive force intensity, it is not easy to fall off, heat resistance is prominent, and at high operating temperatures, light performance attenuation rate is negligible, also has
There are preferable corrosion resistance, high stability.In addition, the heat-absorbing paint absorptive rate of radiation is higher, reaches 0.92 or so, be higher than
0.89 market average.
2, flat plate collector is prepared using heat-absorbing paint provided by the invention, test uses flat plate collector of the present invention respectively
Solar water heater and flat heat collecting type solar water heater conventional in the market thermal transition efficiency, test method are as follows:
The water of equivalent is added into each group water heater by 8:00 in the morning, tests the water temperature in evening 5:00 water tank, follow-on test three days, unites
Meter initial water mildly terminates water temperature, and calculates the temperature of water heater heating；Obtain following data:
Table 2: the heat absorption heating test result of the present embodiment and control group solar water heater
The mean temperature difference that water heater of the invention is calculated at three days is respectively 53.6 DEG C, 52.6 DEG C and 52.4 DEG C, with the same period
Control group compare, the temperature difference has been respectively increased 27.0%, 41.3%, 25.3%；By this data it can be found that of the invention
The photothermal conversion efficiency of solar water heater is better than control group, and under identical illumination condition, the available temperature difference is higher
Hot water.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of plate solar collector heat-absorbing paint, which is characterized in that according to mass percent, the heat-absorbing paint
Component includes: heat absorbent 30-35%, and solidified resin 15-25%, coalescing agent 2-6%, surplus is solvent；
Wherein, the heat absorbent is the solid mixt after photo-thermal sensitized treatment, and the method for photo-thermal sensitized treatment includes such as
Lower step:
(1) by heat absorbent component ball milling, wash cycles are carried out using acetone solvent and deionized water respectively；
(2) heat absorbent after cleaning is added in photo-thermal sensitization A liquid according to the solid-to-liquid ratio of 1:5, while is sensitized A liquid to photo-thermal
It is middle that the KBM-403 silane coupling agent for accounting for the sulfamic acid and 2.5wt% of heat absorbent quality 0.7wt% is added, it is uniformly dispersed and impregnates
45-60min is handled, heat absorbent is filtered after dipping, is dry；
(3) heat absorbent after upper step process is added in photo-thermal sensitization B liquid according to the solid-to-liquid ratio of 1:3, is heated to 47-52
DEG C, heat absorbent handles 6-10min in photo-thermal sensitization B liquid；Then deionized water wash cycles 2-3 is used after heat absorbent being filtered
Secondary, air drying after cleaning completes the photo-thermal sensitized treatment of heat absorbent.
2. a kind of plate solar collector heat-absorbing paint according to claim 1, which is characterized in that according to mass parts
Number, the component that the photo-thermal is sensitized A liquid include:
3-5 parts of sodium citrate, 4-8 parts of copper sulphate, 2-5 parts of succinic acid, three 1-3 parts of (diethylamino) t-butyl carboxamide tantalums, the third two
6-9 parts of alcohol methylether acetate, 15-18 parts of acetone, 50-55 parts of water.
3. a kind of plate solar collector heat-absorbing paint according to claim 2, it is characterised in that: the photo-thermal is quick
The pH value for changing A liquid is 3.2-3.6.
4. a kind of plate solar collector heat-absorbing paint according to claim 1, which is characterized in that according to mass parts
Number, the component that the photo-thermal is sensitized B liquid include:
8-10 parts of dimethyl amine, 4,5- 1-3 parts of diphenyl-imidazoles, bis- [2- (2- acrylic)] the phenol 11-15 of 4,4'- sulfonyls
Part, 3-7 parts of ethylene glycol monoethylether acetate, 30-45 parts of ethyl lactate, 15-20 parts of water, 60-80 parts of ethyl alcohol.
5. a kind of plate solar collector heat-absorbing paint according to claim 4, it is characterised in that: the photo-thermal is quick
The pH value for changing B liquid is 8.5-9.5.
6. a kind of plate solar collector heat-absorbing paint according to claim 1, it is characterised in that: the heat absorbent
In containing carbon black, ferrimanganic is black, phthalocyanine blue, anatase titanium dioxide and silicon carbide, five mass fraction ratio is 8:5:2:2:
1。
7. a kind of plate solar collector heat-absorbing paint according to claim 6, it is characterised in that: the heat absorbent
In further include permivar micro mist no more than 5wt%, nickel element content 30-32%, cobalt element content 4.8- in alloy powder
6.2%。
8. a kind of plate solar collector heat-absorbing paint according to claim 1, it is characterised in that: the solidification tree
Rouge selects fluorocarbon resin, polyurethane resin, epoxy resin or silicone resin；Solvent is acetone, cyclohexanone, one in dimethylbenzene
Kind and butyl acetate etc. quality compare mixture.
9. a kind of plate solar collector heat-absorbing paint according to claim 1, it is characterised in that: the film forming helps
Agent includes defoaming agent, levelling agent and wetting dispersing agent, and the mass ratio of three is 1:1:2.
10. a kind of plate solar collector heat-absorbing paint according to claim 1, it is characterised in that: the heat absorption
Coating is applied to the heat absorbing coating preparation of flat plate collector in solar water heater, and heat absorbing coating is located at Copper base material or aluminium base table
Face.
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| CN201811356809.2A CN109627863A (en) | 2018-11-15 | 2018-11-15 | A kind of plate solar collector heat-absorbing paint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811356809.2A CN109627863A (en) | 2018-11-15 | 2018-11-15 | A kind of plate solar collector heat-absorbing paint |
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Family
ID=66068153
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Cited By (1)
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| CN111908912A (en) * | 2020-08-06 | 2020-11-10 | 天津泰久新科技有限公司 | High-energy thermal radiation absorbing material |
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