CN107936728A - A kind of thermal-collecting tube coating of solar water heater - Google Patents
A kind of thermal-collecting tube coating of solar water heater Download PDFInfo
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- CN107936728A CN107936728A CN201711288350.2A CN201711288350A CN107936728A CN 107936728 A CN107936728 A CN 107936728A CN 201711288350 A CN201711288350 A CN 201711288350A CN 107936728 A CN107936728 A CN 107936728A
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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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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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
- C09D5/18—Fireproof paints including high temperature resistant 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention provides a kind of thermal-collecting tube coating of solar water heater, including 30 150 parts by weight of carborundum, 30 60 parts by weight of cobaltous sulfate, 10 150 parts by weight of organic siliconresin, 10 80 parts by weight of acrylic resin, 20 80 parts by weight of organobentonite, 10 80 parts by weight of silane coupling agent, 80 150 parts by weight of alumina powder.The thermal-collecting tube coating of solar water heater of the present invention, has good light resistance, and coating has good heat endurance, effectively solar energy can be absorbed.
Description
Technical field
The present invention relates to pot-type boiler field, and in particular to a kind of thermal-collecting tube coating of solar water heater.
Background technology
Water heater just refers to the one kind for by various physical principles, making cold water temperature rise become hot water within a certain period of time
Device.It can be divided into electric heater, gas heater, solar water heater, magnetic energy water heater, air energy thermal water according to principle difference
Device, water heater in central heating etc..Solar water heater is the heating unit that solar energy is converted into thermal energy, by water from low-temperature heat to
High temperature, to meet that hot water of the people in life, production uses.
The operation principle of solar water heater is that the first layer glass of sunlight through endothermic tube shines the black of second layer glass
On color heat-sink shell, by the heat absorption of solar energy, due to being vacuum heat-insulation between layer glass, heat transfer will greatly reduce
(radiant heat transfer still has, but without heat transfer and thermal convection current), most heats can only be transmitted to the water inside glass tube,
Heat the water in glass tube, the water of heating just gently up enters insulation water butt, temperature within the barrel phase along glass heating surface of tubes
Relatively low water is supplemented along glass tube shady face into glass tube, so constantly circulation, make the water in insulation water butt continuous
Heating, so as to achieve the purpose that hot water.
The critical piece that solar energy is converted into thermal energy of solar water heater is thermal-collecting tube, and the height of surfaces of collector tubes
Warm coating, that is, solar selectively absorbing membrane is the key technology for determining high-temperature vacuum heat-collecting tube efficiency and generating efficiency, because
This, becomes the hot spot studied instantly.
The content of the invention
The technical problems to be solved by the invention are that providing a kind of surfaces of collector tubes for solar water heater coats
Selective absorbing coating, with realize effectively solar energy is absorbed.
For this reason, the present invention provides a kind of thermal-collecting tube coating of solar water heater, include the raw material of following parts by weight：Carbonization
Silicon 30-150 parts by weight, cobaltous sulfate 30-60 parts by weight, organic siliconresin 10-150 parts by weight, acrylic resin 10-80 weight
Part, organobentonite 20-80 parts by weight, silane coupling agent 10-80 parts by weight, alumina powder 80-150 parts by weight.
Preferably, the thermal-collecting tube coating of the solar water heater, includes the raw material of following parts by weight：Carborundum 80-
It is 110 parts by weight, cobaltous sulfate 30-40 parts by weight, organic siliconresin 50-80 parts by weight, acrylic resin 60-80 parts by weight, organic
Bentonite 40-60 parts by weight, silane coupling agent 10-30 parts by weight, alumina powder 100-120 parts by weight.
It is further preferred that the thermal-collecting tube coating of the solar water heater, include the raw material of following parts by weight：Carbonization
110 parts by weight of silicon, 35 parts by weight of cobaltous sulfate, 60 parts by weight of organic siliconresin, 65 parts by weight of acrylic resin, organobentonite 50
Parts by weight, 20 parts by weight of silane coupling agent, 110 parts by weight of alumina powder.
Preferably, the thermal-collecting tube coating of the solar water heater, further includes oil alkyd resin 20-50 parts by weight.
It is further preferred that the oil alkyd resin is drying oil alkyd resin.
Preferably, the thermal-collecting tube coating of the solar water heater, further includes black pigment.
It is further preferred that the black pigment is black for copper network.
It is further preferred that the black dosage of the copper network is 10-20 parts by weight.
Technical solution provided by the invention, has the following advantages that：
The thermal-collecting tube coating of solar water heater of the present invention, including carborundum 30-150 parts by weight, cobaltous sulfate 30-
60 parts by weight, organic siliconresin 10-150 parts by weight, acrylic resin 10-80 parts by weight, organobentonite 20-80 parts by weight,
Silane coupling agent 10-80 parts by weight, alumina powder 80-150 parts by weight.
Carborundum has black silicon carbide and the common basic kind of green silicon carbide two, all belongs to α-SiC；It is with quartz sand, stone
The raw materials such as oil coke (or coal tar), sawdust (needing to add salt during production green silicon carbide) are formed by resistance furnace pyrolytic semlting.Carbon
SiClx stable chemical performance, thermal conductivity factor are high, thermal coefficient of expansion is small, wear-resisting property is good.Cobaltous sulfate is rose crystallization, is dehydrated
After take on a red color powder, be dissolved in water and methanol, be slightly soluble in ethanol, coatings industry is used as paint drier.Organic siliconresin is (also referred to as
Polysiloxanes) it is that by silicon atom and oxygen atom, alternately link forms skeleton to one kind, different organic groups links with silicon atom again
Polymer general designation.Organic siliconresin, is the polysiloxane of highly cross-linked net structure, typically with methyl trichlorine
The various mixing of silane, dimethyldichlorosilane, phenyl trichlorosilane, diphenyl dichlorosilane or dichloromethyl phenylsilane
Thing, in the presence of organic solvent such as toluene, hydrolyzable, obtains acidic hydrolysis thing at a lower temperature.Both contained in its structure
" organic group ", and contain " inorganic structure ", this special composition and molecular structure make it collect Characteristics of Organic and inorganic matter
Function is.With excellent thermo oxidative stability, electrical insulation capability, weatherability, waterproof, salt spray proof, mould proof, biofacies
The characteristics such as capacitive.Acrylic resin, is made of esters of acrylic acid and methyl acrylic ester and other olefinic type monomers are copolymerized
Resin.Thermoplastic acrylic resin does not occur to be further crosslinked in film forming procedure, therefore its relative molecular weight is larger, has
It is good guarantor's light colour retention, water-fast chemical resistance, fast drying, easy for construction, it is easy to construction recoating and does over again, when prepares aluminium paint
The whiteness of aluminium powder, polarization are good.Organobentonite is a kind of inorganic mineral/organic ammonium compound, using bentonite as raw material, is utilized
The lamellar structure of montmorillonite and its it can be swollen in water or organic solvent in bentonite and be dispersed into colloid clay characteristic, passed through
Ion exchange technique is inserted into organic coverture and manufactured.Organobentonite energy in all kinds of organic solvents, oils, liquid resin
Formed gel, have good thickening property, thixotropy, suspension stability, high-temperature stability, lubricity, film forming, water resistance and
Chemical stability.Silane coupling agent is a kind of organosilicon compound at the same time containing two kinds of different chemical property groups in the molecule
Thing, can improve the bond properties of glass fibre and resin, greatly improve the intensity, electric, anti-of glass fibre reinforced composion
The performances such as water, anti-weather, when hygrometric state, its raising to composite material machinery performance, effect is also very notable.Aluminium oxide
Liquid can be water-based or oiliness any solvent, while can do various glass coating materials, as thermal-collecting tube coating,
With good thermal conductivity.
Above-mentioned several materials are worked in coordination the thermal-collecting tube coating of the solar water heater being prepared, are had good
Light resistance, coating has good heat endurance, effectively solar energy can be absorbed.
Embodiment
Embodiment 1
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：30 weight of carborundum
Part, 60 parts by weight of cobaltous sulfate, 10 parts by weight of organic siliconresin, 80 parts by weight of acrylic resin, 50 parts by weight of organobentonite, silicon
45 parts by weight of alkane coupling agent, 150 parts by weight of alumina powder.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 100 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, dry, the mix powder of obtained drying；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, and coating layer thickness is
100μm；Specific process parameter is：Electric current 300A, voltage 100V, H2Flow 5L/min, Ar flow 5-L/min, chamber pressure 1000Pa,
Spraying rate 20mm/s, spray distance 200mm；
(2) by the thermal-collecting tube after spraying in step (1), 2h is sintered at 800 DEG C, then be cooled to room temperature, you can.
Embodiment 2
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：150 weight of carborundum
Part, 30 parts by weight of cobaltous sulfate, 80 parts by weight of organic siliconresin, 10 parts by weight of acrylic resin, 20 parts by weight of organobentonite, silicon
80 parts by weight of alkane coupling agent, 80 parts by weight of alumina powder.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 800 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 50 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, coating layer thickness 20
μm；Specific process parameter is：Electric current 800A, voltage 40V, H2Flow 80L/min, Ar flow 80L/min, chamber pressure is
10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 2h is sintered at 800 DEG C, then be cooled to room temperature, you can.
Embodiment 3
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：90 weight of carborundum
Part, 45 parts by weight of cobaltous sulfate, 150 parts by weight of organic siliconresin, 45 parts by weight of acrylic resin, 80 parts by weight of organobentonite,
10 parts by weight of silane coupling agent, 115 parts by weight of alumina powder.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 80 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 50 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, coating layer thickness 20
μm；Specific process parameter is：Electric current 800A, voltage 40V, H2Flow 80L/min, Ar flow 5-100L/min, chamber pressure is
10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 2h is sintered at 800 DEG C, then be cooled to room temperature, you can.
Embodiment 4
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：110 weight of carborundum
Part, 30 parts by weight of cobaltous sulfate, 80 parts by weight of organic siliconresin, 60 parts by weight of acrylic resin, 40 parts by weight of organobentonite, silicon
30 parts by weight of alkane coupling agent, 120 parts by weight of alumina powder.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 800 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 150 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, and coating layer thickness is
200μm；Specific process parameter is：Electric current 500A, voltage 40V, H2Flow 120L/min, Ar flow 120L/min, chamber pressure
For 10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 10h is sintered at 700 DEG C, then be cooled to room temperature, you can.
Embodiment 5
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：110 weight of carborundum
Part, 35 parts by weight of cobaltous sulfate, 60 parts by weight of organic siliconresin, 65 parts by weight of acrylic resin, 50 parts by weight of organobentonite, silicon
20 parts by weight of alkane coupling agent, 110 parts by weight of alumina powder.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 60 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 150 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, and coating layer thickness is
200μm；Specific process parameter is：Electric current 500A, voltage 40V, H2Flow 120L/min, Ar flow 120L/min, chamber pressure
For 10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 10h is sintered at 700 DEG C, then be cooled to room temperature, you can.
Embodiment 6
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：110 weight of carborundum
Part, 35 parts by weight of cobaltous sulfate, 60 parts by weight of organic siliconresin, 65 parts by weight of acrylic resin, 50 parts by weight of organobentonite, silicon
20 parts by weight of alkane coupling agent, 110 parts by weight of alumina powder, 50 parts by weight of drying oil alkyd resin.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 800 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 150 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, and coating layer thickness is
200μm；Specific process parameter is：Electric current 500A, voltage 40V, H2Flow 120L/min, Ar flow 120L/min, chamber pressure
For 10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 10h is sintered at 700 DEG C, then be cooled to room temperature, you can.
Embodiment 7
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：110 weight of carborundum
Part, 35 parts by weight of cobaltous sulfate, 60 parts by weight of organic siliconresin, 65 parts by weight of acrylic resin, 50 parts by weight of organobentonite, silicon
20 parts by weight of alkane coupling agent, 110 parts by weight of alumina powder, 20 parts by weight of drying oil alkyd resin.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 800 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 150 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
Drying oil alkyd resin, silane coupling agent are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, and coating layer thickness is
200μm；Specific process parameter is：Electric current 500A, voltage 40V, H2Flow 120L/min, Ar flow 120L/min, chamber pressure
For 10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 10h is sintered at 700 DEG C, then be cooled to room temperature, you can.
Embodiment 8
The thermal-collecting tube coating of the solar water heater of the present embodiment, includes the raw material of following parts by weight：110 weight of carborundum
Part, 35 parts by weight of cobaltous sulfate, 60 parts by weight of organic siliconresin, 65 parts by weight of acrylic resin, 50 parts by weight of organobentonite, silicon
20 parts by weight of alkane coupling agent, 110 parts by weight of alumina powder, 20 parts by weight of drying oil alkyd resin, black 10 parts by weight of copper network.
Its preparation method is as follows：
(1) carborundum, cobaltous sulfate, organic siliconresin, acrylic resin, organobentonite, alumina powder are taken by weight,
It is uniformly mixed, adds the water of 800 parts by weight, adds in ball mill and crush, obtain mixed liquor；
(2) mixed liquor obtained in step (1) is sieved, the mesh number of sieving is 150 mesh, spray drying, obtained drying
Mix powder；
(3) mix powder obtained in step (2) is sintered, crushes, obtain pulverized particles, to the crushing
It is black that drying oil alkyd resin, silane coupling agent, copper network are added in grain, is uniformly mixed, to obtain the final product.
The application method of the thermal-collecting tube coating for the solar water heater being prepared by above-mentioned preparation method is as follows：
(1) it is the base tube outer surface of the thermal-collecting tube of solar water heater is clean and dry, then using low pressure etc. from
The thermal-collecting tube coating of above-mentioned solar water heater is sprayed on the outer surface of the base tube by sub- spraying method, and coating layer thickness is
200μm；Specific process parameter is：Electric current 500A, voltage 40V, H2Flow 120L/min, Ar flow 120L/min, chamber pressure
For 10000Pa, spraying rate 10mm/s, spray distance 10mm；
(2) by the thermal-collecting tube after spraying in step (1), 10h is sintered at 700 DEG C, then be cooled to room temperature, you can.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
1. the thermal-collecting tube coating of a kind of solar water heater, it is characterised in that include the raw material of following parts by weight：Carborundum 30-
It is 150 parts by weight, cobaltous sulfate 30-60 parts by weight, organic siliconresin 10-150 parts by weight, acrylic resin 10-80 parts by weight, organic
Bentonite 20-80 parts by weight, silane coupling agent 10-80 parts by weight, alumina powder 80-150 parts by weight.
2. according to the thermal-collecting tube coating of the solar water heater described in claim 1, it is characterised in that including following parts by weight
Raw material：Carborundum 80-110 parts by weight, cobaltous sulfate 30-40 parts by weight, organic siliconresin 50-80 parts by weight, acrylic resin
60-80 parts by weight, organobentonite 40-60 parts by weight, silane coupling agent 10-30 parts by weight, alumina powder 100-120 weight
Part.
3. according to the thermal-collecting tube coating of the solar water heater described in claim 2, it is characterised in that including following parts by weight
Raw material：110 parts by weight of carborundum, 35 parts by weight of cobaltous sulfate, 60 parts by weight of organic siliconresin, 65 parts by weight of acrylic resin,
50 parts by weight of organobentonite, 20 parts by weight of silane coupling agent, 110 parts by weight of alumina powder.
4. the thermal-collecting tube coating of the solar water heater according to any one in claim 1-3, it is characterised in that also wrap
Include oil alkyd resin 20-50 parts by weight.
5. according to the thermal-collecting tube coating of the solar water heater described in claim 4, it is characterised in that the oil alkyd resin
For drying oil alkyd resin.
6. the thermal-collecting tube coating of the solar water heater according to any one in claim 1-5, it is characterised in that also wrap
Include black pigment.
7. according to the thermal-collecting tube coating of the solar water heater described in claim 6, it is characterised in that the black pigment is
Copper network is black.
8. according to the thermal-collecting tube coating of the solar water heater described in claim 7, it is characterised in that the black use of the copper network
Measure as 10-20 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711288350.2A CN107936728A (en) | 2017-12-07 | 2017-12-07 | A kind of thermal-collecting tube coating of solar water heater |
Applications Claiming Priority (1)
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338149A (en) * | 2016-08-29 | 2017-01-18 | 江苏浴普太阳能有限公司 | Solar vacuum tube |
| CN106752915A (en) * | 2016-12-14 | 2017-05-31 | 上海电力学院 | A kind of nano level metal ceramic solar heat absorbing coating material and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338149A (en) * | 2016-08-29 | 2017-01-18 | 江苏浴普太阳能有限公司 | Solar vacuum tube |
| CN106752915A (en) * | 2016-12-14 | 2017-05-31 | 上海电力学院 | A kind of nano level metal ceramic solar heat absorbing coating material and preparation method thereof |
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Application publication date: 20180420 |