CN105694647A - Heat-absorbing paint - Google Patents
Heat-absorbing paint Download PDFInfo
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- CN105694647A CN105694647A CN201610073568.5A CN201610073568A CN105694647A CN 105694647 A CN105694647 A CN 105694647A CN 201610073568 A CN201610073568 A CN 201610073568A CN 105694647 A CN105694647 A CN 105694647A
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
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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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a heat-absorbing paint which is prepared by the following steps: uniformly dispersing a light absorber, a film former, a solvent and aids by ball milling, adding a film forming aid, and mixing to obtain the solar heat-absorbing paint. The heat-absorbing paint is prepared from the following raw materials in parts by weight: 50-100 parts of film former, 10-30 parts of film forming, 35-55 parts of light absorber, 20-50 parts of solvent and 10-30 parts of aids. The film forming aid is hexanediol butyl ether acetate, ethanediol monopropyl ether or the like. The preparation method of the film former comprises the following steps: mixing casein and gelatin according to the weight ratio of (5-10):(2-3), adding water, immersing at 15-22 DEG C, transferring to a normal temperature environment, adding a mixed solution composed of ethyl acrylate and polydimethylsiloxane in a weight ratio of (1-2):(1-3), reacting, stirring, and carrying out ultraviolet irradiation for 10-15 minutes, thereby obtaining the modified casein-gelatin. The film former is modified and used as a critical raw material for preparing the paint, so that the prepared paint has favorable weather resistance and water resistance under outdoor conditions. The preparation technique is simple and understandable, and ensures the heat absorption efficiency of the heat-absorbing paint.
Description
Technical field
The present invention relates to technical field of coatings, particularly relate to a kind of heat-absorbing paint。
Background technology
Utilization of energy occupies very important status in human social development, but excessive exploiting natural resources and the inefficient utilization of resources, make facing mankind acid test。It is known that; solar energy is the regenerative resource that a kind of source is the abundantest and can extensively obtain; solution energy crisis and environmental problem had great effect; and solar energy with unique reserves unlimitedness, the universality existed, exploitation spatter property so that it is become the focus that various countries are competitively studied。China is richly stored with solar energy resources, and Solar use has a extensive future, and has been that the first of solar water heater in the world uses state and manufacturing country at present。
Solar energy optical-thermal application be human use's solar energy the most simply, the most directly, one of most efficient method, but after arriving the earth due to solar energy, energy density is less discontinuous again, therefore, brings difficulty for developing on a large scale。For a long time, how to convert low-grade solar energy to high-grade heat energy, and solar energy is enriched with, in order to maximally utilise solar energy, become the hot issue of research。In the middle of existing Photo-thermal technology application technology, coating for selective absorption technology is acknowledged as wherein the technology of comparatively core, and it is to improving solar heat conversion efficiency, and the application of large-scale promotion solar energy optical-thermal plays vital effect。
It is known that, solar energy absorbing coating is broadly divided into spectral selective absorbing coating and high-absorbility absorber coatings, spectral selection heat absorbing coating is that one has visible-near-infrared high-selenium corn, special coating to the reflection of infrared light height, namely it can effectively absorb solar energy, and heat loss that after being heated, self long wave causes is only small, is widely used in solar energy hot-cast socket, such as solar water heater, solar electrical energy generation etc.。Solar energy heat absorbing coating is responsible for the important function receiving and absorbing solar energy, affects the stability of whole solar energy heat absorbing system and the height of efficiency。Solar energy heat absorbing coating is a kind of functional coating, and solar radiant energy is converted into heat energy by the film made with it, and film works under outdoor conditions, it is necessary to have good weatherability and water proofing property。
Present solar energy heat absorbing coating, the research of the weatherability and water proofing property that are specifically designed for solar paint can be found everywhere, and utilizes nano material as the raw material of heat-absorbing material now, can improve weatherability and the heat absorption efficiency of coating, such as Chinese patent CN102286243A, but cost is high；Also there is the weather resistance utilizing the formula changing pigment to improve the coating prepared, for instance Chinese patent CN102134428B, but its technological process prepared is complicated, it is desirable to be higher。
Summary of the invention
The goal of the invention of the present invention is in that: for above-mentioned Problems existing, a kind of heat-absorbing paint is provided, by film former being modified the rear important source material as preparation the application coating, the coating made can not only be made to have good weatherability and water proofing property under outdoor conditions, and the technique of preparation is easily understood, and can guarantee that the heat absorption efficiency of heat-absorbing paint, there is great promotional value。
The present invention is achieved by the following technical solutions:
A kind of heat-absorbing paint, including film former, optical absorbing agent, coalescents, solvent and auxiliary agent, after utilizing the method for ball milling to be uniformly dispersed with film former, solvent and auxiliary agent optical absorbing agent, adds coalescents mix homogeneously, can obtain solar energy heat absorbing coating；Described film former, optical absorbing agent, coalescents, solvent and auxiliary agent are calculated as according to ratio of weight and number: film former 50-100 part；Coalescents 10-30 part；Optical absorbing agent 35-55 part；Solvent 20-50 part；Auxiliary agent 10-30 part；Described coalescents is one or more in hexanediol monobutyl ether acetate, ethylene glycol ether, diethylene glycol monomethyl ether, triethylene glycol butyl ether；Described film former is modified Casein-gelatin；The preparation method of described film former is: will be casein according to weight ratio: gelatin is that 5-10:2-3 mixes, it is subsequently adding water, after temperature is soak a period of time under 15 DEG C of-22 DEG C of conditions, adding ethyl acrylate and polydimethylsiloxane after moving to room temperature according to weight part ratio is the mixed liquor of 1-2:1-3, after reaction a period of time, it is cooled to room temperature, by, after irradiation under ultraviolet ray 10-15min, obtaining modified Casein-gelatin after being stirred for。
In the present invention, further, the wavelength of described irradiation under ultraviolet ray is 200nm-400nm。
In the present invention, further, the preparation method of described film former is: the speed of described stirring is 50-100r/min；The time of described stirring is 1-5min。
In the present invention, further, the 1/10-1/5 that weight is casein and gelatin gross weight of described addition water。
In the present invention, further, the time of described immersion is 10-15min；The time of described reaction is 5-15min, and the temperature of reaction is 70 DEG C-80 DEG C。
In the present invention, further, described optical absorbing agent is that cobalt blue powder, cobalt copper-manganese oxide and organic white carbon black are deployed into black；Or use chrome oxide green powder, Se deposit powder, ferric oxide red powder to be deployed into redness；Or use vulcanized lead and cobalt blue powder to be deployed into blueness。
In the present invention, further, described solvent is one or more in acetic acid, Glacial acetic acid butyl ester, glycerol, oxolane-propylene oxide copolymer glycols and polyurethane polyureas ethoxylated polyhydric alcohol。
In the present invention, further, described auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, and the weight ratio of plasticizer, coupling agent, levelling agent, wetting agent and defoamer is 2-3:3-5:3-5:2-5:1-3。
Further, described plasticizer is dibutyl phthalate。
Further, described coupling agent is the mixture of a kind of or at least two in silane coupler, titanate coupling agent, aluminate coupling agent, metal composite coupling agent, phosphate coupling agent, boric acid ester coupler。
Further, described levelling agent is a kind of in EFKA3570, EFKA3580, YCK-1360, BYK-333 and TEGOGlide100 or at least two kinds of mixtures。
Further, described wetting agent is the one in the polydimethylsiloxane of polysiloxanes, polyether-modified polydimethylpolysiloxane and polyester modification。
Further, described defoamer is polyoxyethylene oxypropylene glycerol, polyoxyethylene polyoxypropylene tetramethylolmethane ether, polyoxyethylene polyoxy propanol amidogen ether, polypropylene glycerol aether or polyoxypropylene。
The raw material related in this application and equipment all can obtain in buying on the market。
This compared with prior art, the device have the advantages that into:
1, the present invention is by by modified film former, being modified Casein-gelatin and utilize the method for ball milling to be uniformly dispersed with optical absorbing agent, solvent and auxiliary agent, after adding coalescents mix homogeneously, obtain solar energy heat absorbing coating。The heat-absorbing paint that this raw material prepares utilizes the method for ball milling that raw material can be made fully dispersed, it is not necessary to adds dispersant again, and then reduces preparation cost；Successively utilize chemical modification, casein and gelatin are modified by physical modification, modified Casein-the gelatin obtained is as the film former in heat-absorbing paint raw material, the heat-absorbing paint prepared can be made not rupture at-30 DEG C, extensibility strengthens, cold tolerance, heat resistance significantly improves, and reduce the probability caught fire, pass through chemical reaction, control the temperature of reaction, modified Casein-gelatin can be made to react at a suitable temperature, avoid reacted slowly, increase the time of preparation or react too fast, the modified problem that caking occurs that overdoes, and in course of reaction, polydimethylsiloxane section is introduced cheese element, in gelatin structure, who enclose and property amino to sensitivity by force simultaneously, on the group such as carboxyl and hydroxyl, reduce the hydrophilic of modified casein-gelatin, improve the water resistance of film forming。
2, the optical absorbing agent of present invention choosing can mix multiple color, it is possible to use cobalt blue powder, cobalt copper-manganese oxide and organic white carbon black are deployed into black；Or use chrome oxide green powder, Se deposit powder, ferric oxide red powder to be deployed into redness；Or use vulcanized lead and cobalt blue powder to be deployed into blueness；Add the pleochroism of coating, solve color single, the problem of ornamental difference so that the coating that the application prepares is applicable under multiple environment, has bigger generalization；And be deployed into black, redness, blueness or green and all employ shortwave district color and combine with long-wavelength region color, it is possible to significantly improve the absorbance of sunlight。
3, the film former (modified Casein-gelatin) that the solvent selected in the present invention is specific in the application designs, quickly film former can be dissolved, then ball milling is carried out together with other raw materials, mix homogeneously disperses, make the distributed components of the light absorption paint prepared, similar density, after using sunlight heat-absorbing paint prepared by the application that ground is coated, absorbs heat more uniform。
4, the various performances improving coating of the present invention that auxiliary agent used in this application can be overall, the film former selected for the application and pigment type, select the auxiliary agent matched specially, strengthen the various performances of coating of the present invention, the coupling agent such as selected can improve the extensibility of coating, it is prevented that the ground explosion after coating；The wetting agent selected can reduce the surface tension of coating, adds coating ability on the surface of moistening ground when coating；The levelling agent selected can obtain a film smooth, smooth, uniform when carrying out ground coating；The defoamer selected can suppress the material that foam produces, and it and liquid foamer are together adsorbed on bubble, make surface tension reduce, and vacuolar membrane is thinning, causes breakage, can prevent foaming phenomena。
5. the preparation technology of the present invention is simple, understandable, and feasibility is high, and it is high with infrared light performance to test proves that coating absorbs visible ray after being coated, heat conductivity is high, and water proofing property is strong, high temperature resistant, corrosion-resistant, stability is high, and emissivity is low, and absorbance is high, coating adhesion is strong, density is high, is desirable solar energy heat absorbing coating, has great promotional value。
Detailed description of the invention
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way。
This specification (include any accessory claim, summary) disclosed in any feature, unless specifically stated otherwise, all can by other equivalences or there is the alternative features of similar purpose replaced。That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics。
Embodiment 1:
A kind of heat-absorbing paint, raw material is:
Film former: modified Casein-gelatin 50kg；
Coalescents: hexanediol monobutyl ether acetate 6kg, ethylene glycol ether 4kg；
Optical absorbing agent: cobalt blue powder 8kg, cobalt copper-manganese oxide 12kg and organic white carbon black 15kg are deployed into black；
Solvent: acetic acid 6kg, Glacial acetic acid butyl ester 8kg, glycerol 6kg；
Auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, wherein,
Plasticizer: dibutyl phthalate 2kg；
Coupling agent: silane coupler 1kg, titanate coupling agent 2kg；
Levelling agent: EFKA35702kg, EFKA35801kg carry out uniform mixture；
Wetting agent: polysiloxanes 2kg；
Defoamer: polyoxyethylene oxypropylene glycerol 1kg。
The step preparing solar energy heat absorbing coating according to above-mentioned raw material is as follows:
(1) it is that 5:2 mix with gelatin according to weight ratio by casein, it is casein 35.7kg, gelatin 14.3kg, it is subsequently adding water 25kg, after temperature is soak 10min under 15 DEG C of conditions, adding ethyl acrylate and polydimethylsiloxane after moving to room temperature according to weight part ratio is the mixed liquor of 1:1, after temperature is react 5min under 70 DEG C of conditions, is cooled to room temperature, by wavelength for, after 200nm irradiation under ultraviolet ray 10min, obtaining modified Casein-gelatin after stirring 1min with speed for 50r/min again；
(2) according to ratio of weight and number, optical absorbing agent and film former, solvent and auxiliary agent are put in ball mill, start ball mill and carry out after each raw material ball milling is uniformly dispersed by ball milling operation 5min, after adding coalescents mix homogeneously, solar energy heat absorbing coating to be obtained。
Embodiment 2:
A kind of heat-absorbing paint, raw material is:
Film former: modified Casein-gelatin 100kg；
Coalescents: hexanediol monobutyl ether acetate 10kg, ethylene glycol ether 10kg, diethylene glycol monomethyl ether 10kg；
Optical absorbing agent: use cobalt blue powder 10kg, cobalt copper-manganese oxide 20kg and organic white carbon black 25kg to be deployed into black；
Solvent: glycerol 15kg, oxolane-propylene oxide copolymer glycols 15kg and polyurethane polyureas ethoxylated polyhydric alcohol 25kg；
Auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, wherein,
Plasticizer: dibutyl phthalate 3kg；
Coupling agent: aluminate coupling agent 2kg；
Levelling agent: YCK-13605kg；
Wetting agent: polyether-modified polydimethylpolysiloxane 2kg；
Defoamer: polyoxyethylene polyoxypropylene tetramethylolmethane ether 3kg；
The step preparing solar energy heat absorbing coating according to above-mentioned raw material is as follows:
(1) it is that 10:3 mix with gelatin according to weight ratio by casein, it is casein 77kg, gelatin 23kg, it is subsequently adding water 20kg, after temperature is soak 15min under 22 DEG C of conditions, adding ethyl acrylate and polydimethylsiloxane after moving to room temperature according to weight part ratio is the mixed liquor of 1:3, after temperature is react 15min under 72 DEG C of conditions, is cooled to room temperature, by wavelength for, after 400nm irradiation under ultraviolet ray 15min, obtaining modified Casein-gelatin after stirring 5min with speed for 100r/min again；
(2) according to ratio of weight and number, optical absorbing agent and film former, solvent and auxiliary agent are put in ball mill, start ball mill to carry out after each raw material ball milling is uniformly dispersed by ball milling operation 15min, after adding coalescents mix homogeneously, solar energy heat absorbing coating to be obtained。
Embodiment 3:
A kind of heat-absorbing paint, raw material is:
Film former: modified Casein-gelatin 80kg；
Coalescents: hexanediol monobutyl ether acetate 10kg, diethylene glycol monomethyl ether 10kg, triethylene glycol butyl ether 5kg；
Optical absorbing agent: use chrome oxide green powder 18kg, Se deposit powder 12kg, ferric oxide red powder 20kg to be deployed into redness；
Solvent: acetic acid 20kg and polyurethane polyureas ethoxylated polyhydric alcohol 20kg；
Auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, wherein,
Plasticizer: dibutyl phthalate 2kg；
Coupling agent: phosphate coupling agent 2kg, boric acid ester coupler 2kg mixture；
Levelling agent: BYK-3332kg and TEGOGlide1002kg mixture；
Wetting agent: the polydimethylsiloxane 3kg of polyester modification；
Defoamer: polyoxypropylene 2kg。
The step preparing solar energy heat absorbing coating according to above-mentioned raw material is as follows:
(1) it is that 2:1 mix with gelatin according to weight ratio by casein, it is casein 53kg, gelatin 27kg, it is subsequently adding water 10kg, after temperature is soak 12min under 18 DEG C of conditions, again ethyl acrylate and polydimethylsiloxane are added according to the mixed liquor that weight part ratio is 2:1 after moving to room temperature, after temperature is react 9min under 75 DEG C of conditions, be cooled to room temperature, by wavelength for, after 250nm irradiation under ultraviolet ray 12min, obtaining modified Casein-gelatin after stirring 2min with speed for 60r/min again；
(2) according to ratio of weight and number, optical absorbing agent and film former, solvent and auxiliary agent are put in ball mill, start ball mill and carry out after each raw material ball milling is uniformly dispersed by ball milling operation 8min, after adding coalescents mix homogeneously, solar energy heat absorbing coating to be obtained。
Embodiment 4:
A kind of heat-absorbing paint, raw material is:
Film former: modified Casein-gelatin 60kg；
Coalescents: hexanediol monobutyl ether acetate 15kg, ethylene glycol ether 15kg, diethylene glycol monomethyl ether 15kg, triethylene glycol butyl ether 15kg；
Optical absorbing agent: use vulcanized lead 20kg and cobalt blue powder 20kg to be deployed into blueness；
Solvent: Glacial acetic acid butyl ester 10kg, glycerol 5kg and polyurethane polyureas ethoxylated polyhydric alcohol 15kg；
Auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, wherein,
Plasticizer: dibutyl phthalate 2kg；
Coupling agent: phosphate coupling agent 1kg, boric acid ester coupler 2kg；
Levelling agent: TEGOGlide1002kg；
Wetting agent: the polydimethylsiloxane 2kg of polyester modification；
Defoamer: polypropylene glycerol aether 1kg；
The step preparing solar energy heat absorbing coating according to above-mentioned raw material is as follows:
(1) it is that 4:1 mix with gelatin according to weight ratio by casein, it is casein 48kg, gelatin 12kg, it is subsequently adding water 6.7kg, after temperature is soak 14min under 19 DEG C of conditions, again ethyl acrylate and polydimethylsiloxane are added according to the mixed liquor that weight part ratio is 2:3 after moving to room temperature, after temperature is react 12min under 80 DEG C of conditions, be cooled to room temperature, by wavelength for, after 300nm irradiation under ultraviolet ray 14min, obtaining modified Casein-gelatin after stirring 3min with speed for 70r/min again；
(2) according to ratio of weight and number, optical absorbing agent and film former, solvent and auxiliary agent are put in ball mill, start ball mill to carry out after each raw material ball milling is uniformly dispersed by ball milling operation 13min, after adding coalescents mix homogeneously, solar energy heat absorbing coating to be obtained。
Embodiment 5:
A kind of heat-absorbing paint, raw material is:
Film former: modified Casein-gelatin 75kg；
Coalescents: hexanediol monobutyl ether acetate 10kg, ethylene glycol ether 5kg, diethylene glycol monomethyl ether 7kg；
Optical absorbing agent: use chrome oxide green powder 8kg, Se deposit powder 19kg, ferric oxide red powder 18kg to be deployed into redness；Solvent: acetic acid 12kg, Glacial acetic acid butyl ester 8kg, glycerol 7kg, oxolane-propylene oxide copolymer glycols 5kg and polyurethane polyureas ethoxylated polyhydric alcohol 6kg；
Auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, wherein,
Plasticizer: dibutyl phthalate 3kg；
Coupling agent: silane coupler 2kg boric acid ester coupler 2kg；
Levelling agent: EFKA35701kg, YCK-13601kg, BYK-3331kg；
Wetting agent: polysiloxanes 5kg；
Defoamer: polypropylene glycerol aether 1kg。
The step preparing solar energy heat absorbing coating according to above-mentioned raw material is as follows:
(1) it is that 9:2 mix with gelatin according to weight ratio by casein, it is casein 61kg, gelatin 14kg, the weight being subsequently adding water is 8.3kg, after temperature is soak 13min under 20 DEG C of conditions, again ethyl acrylate and polydimethylsiloxane are added according to the mixed liquor that weight part ratio is 2:3 after moving to room temperature, after temperature is react 11min under 78 DEG C of conditions, it is cooled to room temperature, by wavelength for, after 350nm irradiation under ultraviolet ray 14min, obtaining modified Casein-gelatin after stirring 4min with speed for 80r/min again；
(2) according to ratio of weight and number, optical absorbing agent and film former, solvent and auxiliary agent are put in ball mill, start ball mill to carry out after each raw material ball milling is uniformly dispersed by ball milling operation 13min, after adding coalescents mix homogeneously, solar energy heat absorbing coating to be obtained。
To solar energy heat absorbing coating prepared in embodiment 1-5, direct spraying or brushing are on the heat sink metal layer surface absorbing heat glass tube with vacuum inner layer sheet surface or flat-plate solar collector at normal temperatures, before stenciling coating, need that glass or metal surface carry out clean process, metal surface reaches metal true qualities, and coating is stirred, then according to heat collector type brushing this coating thickness 40-160 μm of coating or thicker。
By above-mentioned application operating procedure step, this coating solar energy heat absorbing coating of the thickness obtained 60 μm being carried out technical specification verification test, test result is as shown in table 1:
Table 1 test result information slip
As seen from the above table, it is high with infrared light performance that the solar energy heat absorbing coating that embodiment of the present invention 1-5 prepares absorbs visible ray, and heat conductivity is high, and water proofing property is strong, high temperature resistant, corrosion-resistant, stability is high, and emissivity is low, absorbance is high, and coating adhesion is strong, and density is high, is desirable solar energy heat absorbing coating。
The invention is not limited in aforesaid detailed description of the invention。The present invention expands to any new feature disclosed in this manual or any new combination, and the step of the arbitrary new method disclosed or process or any new combination。
Claims (8)
1. a heat-absorbing paint, including film former, optical absorbing agent, coalescents, solvent and auxiliary agent, it is characterised in that after utilizing the method for ball milling to be uniformly dispersed with film former, solvent and auxiliary agent optical absorbing agent, add coalescents mix homogeneously, solar energy heat absorbing coating can be obtained；Described film former, optical absorbing agent, coalescents, solvent and auxiliary agent are calculated as according to ratio of weight and number: film former 50-100 part；Coalescents 10-30 part；Optical absorbing agent 35-55 part；Solvent 20-50 part；Auxiliary agent 10-30 part；Described coalescents is one or more in hexanediol monobutyl ether acetate, ethylene glycol ether, diethylene glycol monomethyl ether, triethylene glycol butyl ether；Described film former is modified Casein-gelatin；The preparation method of described film former is: will be casein according to weight ratio: gelatin is that 5-10:2-3 mixes, it is subsequently adding water, after temperature is soak a period of time under 15 DEG C of-22 DEG C of conditions, adding ethyl acrylate and polydimethylsiloxane after moving to room temperature according to weight part ratio is the mixed liquor of 1-2:1-3, after reaction a period of time, it is cooled to room temperature, by, after irradiation under ultraviolet ray 10-15min, obtaining modified Casein-gelatin after being stirred for。
2. a kind of heat-absorbing paint according to claim 2, it is characterised in that the wavelength of described irradiation under ultraviolet ray is 200nm-400nm。
3. a kind of heat-absorbing paint according to claim 2, it is characterised in that the preparation method of described film former is: the speed of described stirring is 50-100r/min；The time of described stirring is 1-5min。
4. a kind of heat-absorbing paint according to claim 2, it is characterised in that the 1/10-1/5 that weight is casein and gelatin gross weight of described addition water。
5. a kind of heat-absorbing paint according to claim 2, it is characterised in that the time of described immersion is 10-15min；The time of described reaction is 5-15min, and the temperature of reaction is 70 DEG C-80 DEG C。
6. a kind of heat-absorbing paint according to claim 1, it is characterised in that described optical absorbing agent is that cobalt blue powder, cobalt copper-manganese oxide and organic white carbon black are deployed into black；Or use chrome oxide green powder, Se deposit powder, ferric oxide red powder to be deployed into redness；Or use vulcanized lead and cobalt blue powder to be deployed into blueness。
7. a kind of heat-absorbing paint according to claim 1, it is characterised in that described solvent is one or more in acetic acid, Glacial acetic acid butyl ester, glycerol, oxolane-propylene oxide copolymer glycols and polyurethane polyureas ethoxylated polyhydric alcohol。
8. a kind of heat-absorbing paint according to claim 1, it is characterised in that described auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, and the weight ratio of plasticizer, coupling agent, levelling agent, wetting agent and defoamer is 2-3:3-5:3-5:2-5:1-3。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610073568.5A CN105694647A (en) | 2016-02-03 | 2016-02-03 | Heat-absorbing paint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610073568.5A CN105694647A (en) | 2016-02-03 | 2016-02-03 | Heat-absorbing paint |
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| CN105694647A true CN105694647A (en) | 2016-06-22 |
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| CN201610073568.5A Pending CN105694647A (en) | 2016-02-03 | 2016-02-03 | Heat-absorbing paint |
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| CN107325667A (en) * | 2017-06-30 | 2017-11-07 | 马鞍山昊阳新能源科技有限公司 | A kind of formula of new type solar energy heat-absorbing paint |
| CN107383960A (en) * | 2017-06-30 | 2017-11-24 | 马鞍山昊阳新能源科技有限公司 | A kind of new energy cell panel heat-absorbing paint |
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