CN105602389A - Solar heat-absorbing paint with high weather resistance - Google Patents
Solar heat-absorbing paint with high weather resistance Download PDFInfo
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- CN105602389A CN105602389A CN201610072939.8A CN201610072939A CN105602389A CN 105602389 A CN105602389 A CN 105602389A CN 201610072939 A CN201610072939 A CN 201610072939A CN 105602389 A CN105602389 A CN 105602389A
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- 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
- C09D151/08—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 grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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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- 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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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
The invention discloses a solar heat-absorbing paint with high weather resistance. The solar heat-absorbing paint with high weather resistance is prepared by uniformly dispersing a light absorber, a film-forming agent, a solvent and an auxiliary agent by use of a ball-milling method and then uniformly mixing with a film-forming auxiliary agent. The solar heat-absorbing paint is prepared from the following raw materials in parts by weight: 50-100 parts of the film-forming agent, 10-30 parts of the film-forming auxiliary agent, 35-55 parts of the light absorber, 20-50 parts of the solvent and 10-30 parts of the auxiliary agent. A preparation method of the film-forming agent comprises the following steps: mixing casein with gelatin at a mass ratio of (5-10):(2-3), adding water, soaking at a temperature of 15-22 DEG C, then adding a mixed solution containing hydroxyethyl methylacrylate and polydimethylsiloxane in weight part ratio of (1-2):(1-3), calcinating at a temperature of 200-300 DEG C for 5-10 hours, and then performing air jet pulverization, grading, recalcination and ball milling on the calcinated product, thereby obtaining the modified casein-gelatin. The film-forming agent is modified so as to serve as an important raw material for preparing the paint disclosed by the application, so that the prepared paint has favorable weather resistance and waterproofness under an outdoor condition, the preparation process is simple and easy to understand, and the heat absorption efficiency of the heat-absorbing paint is also ensured.
Description
Technical field
The present invention relates to heat-absorbing material, relate in particular to the solar energy heat absorbing coating that a kind of weatherability is high.
Background technology
Using energy source occupies very important status in human social development, but excessive exploit natural resources and inefficientThe utilization of resources, makes facing mankind acid test. As everyone knows, solar energy is that a kind of source is the abundantest and can extensively obtainRegenerative resource, has great effect to solving energy crisis and environmental problem, and solar energy with unique reserves unlimitedness,The generality existing, the spatter property of exploitation, become the focus that various countries are competitively studied. China is richly stored with tooSun can resource, and solar energy utilization has a extensive future, be at present in the world solar water heater first use state and producing country.
Solar energy optical-thermal application be human use's solar energy the most simply, the most directly, one of effective method, but due to tooAfter sun can arrive the earth, energy density is less discontinuous again, therefore, and for large-scale exploitation brought difficulty. For a long time withCome, how to convert low-grade solar energy to high-grade heat energy, and solar energy is carried out to enrichment, so that land productivity to greatest extentWith solar energy, become the hot issue of research. In the middle of existing Photo-thermal technology application technology, coating for selective absorption technology is recognizedFor being the technology of core comparatively wherein, it is to improving solar heat conversion efficiency, and the application of large-scale promotion solar energy optical-thermal playsVital effect.
As everyone knows, solar energy absorbing coating is mainly divided into spectral selective absorbing coating and high-absorbility absorber coatings,Spectral selection heat absorbing coating is that one has visible-near-infrared high absorption, to the special coating of the high reflection of infrared light,Be that it can absorb solar energy effectively, and the heat loss that after being heated, self long wave causes is very little, is widely used in solar energy optical-thermalConversion, as solar water heater, solar electrical energy generation etc. Solar energy heat absorbing coating is being undertaken and is being received and absorb the important of solar energyAct on, affect the height of stability and the efficiency of whole solar energy heat absorbing system. Solar energy heat absorbing coating is a kind of functionalCoating, solar radiant energy is converted into heat energy by the film made from it, and film is worked under outdoor conditions, must have good weather-proofProperty and water proofing property.
Present solar energy heat absorbing coating, compares all for the weatherability of solar paint and the research of water proofing property speciallyBe, utilize now the raw material of nano material as heat-absorbing material, can improve weatherability and the heat absorption efficiency of coating, for example China speciallyProfit CN102286243A, but cost is high; Also have to utilize and change the formula of pigment and improve the weather-proof of the coating that is prepared intoPerformance, for example Chinese patent CN102134428B, but its technological process complexity of preparing is had relatively high expectations.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, provide a kind of solar paint, by will to becomeFilm carries out after modification, as the important source material of preparation the application coating, can not only making coating tool under outdoor conditions of makingHave good weatherability and water proofing property, and the technique of preparation is easily understood, and can ensures the heat absorption efficiency of heat-absorbing paint, havePromotional value greatly.
The present invention is achieved by the following technical solutions:
The solar energy heat absorbing coating that weatherability is high, comprises film forming agent, optical absorbing agent, coalescents, solvent and auxiliary agent, by extinctionAfter agent and film forming agent, solvent and auxiliary agent utilize the method for ball milling to be uniformly dispersed, then add coalescents to mix, can obtainThe solar energy heat absorbing coating that weatherability is high; Described film forming agent, optical absorbing agent, coalescents, solvent and auxiliary agent are according to ratio of weight and numberCount: film forming agent 50-100 part; Coalescents 10-30 part; Optical absorbing agent 35-55 part; Solvent 20-50 part; Auxiliary agent 10-30 part; InstituteState coalescents and be at least one in propylene glycol monomethyl ether, the special butyl ether of propane diols, DPG list propyl ether, Tri(propylene glycol)butyl ether,mixture of isomersPlant mixture; Described film forming agent is modified Casein-gelatin; The preparation method of described film forming agent is: will be according to weight ratio casein: brightGlue is that 5-10:2-3 mixes, and then adds water, under 15 DEG C of-22 DEG C of conditions, soaks after a period of time, adds after moving to normal temperatureEnter according to the mixed liquor of weight part ratio hydroxyethyl methacrylate: dimethyl silicone polymer=1-2:1-3, after reaction a period of time,Be cooled to normal temperature, then under 200-300 DEG C of condition, calcine 5-10h, and the product after calcining is carried out to air-flow crushing, classification,Controlling D50 is 10-20 μ m, then at 400-500 DEG C of high-temperature calcination 8-15h, carries out ball milling 1-3h after calcining, can obtain modification junketElement-gelatin.
In the present invention, further, the preparation method of described film forming agent is: the speed of described stirring is 50-100r/Min; The time of described stirring is 1-5min.
In the present invention, further, described in to add the weight of water be the 1/10-1/5 of casein and gelatin gross weight.
In the present invention, further, the time of described immersion is 10-15min; The time of described reaction is 5-15min,The temperature of reaction is 70 DEG C-80 DEG C.
In the present invention, further, described optical absorbing agent be cobalt blue powder, cobalt copper-manganese oxide and enamel is black or cobalt blue powder,Cobalt copper-manganese oxide and organic carbon black are deployed into black; Or use chrome oxide green powder, selenium Cadmium Sulfide powder, ferric oxide red powder allotmentBecome red; Or use vulcanized lead and cobalt blue powder to be deployed into blueness; Or use chrome oxide green powder, white lead powder and the allotment of cobalt blue powderBecome green.
In the present invention, further, described solvent is acetic acid, acetic anhydride butyl ester, glycerine, oxolane-oxidationOne or more in copolymerization of propylene glycol and polyurethane polyureas ethoxylated polyhydric alcohol.
In the present invention, further, described auxiliary agent is plasticizer, coupling agent, levelling agent, wetting agent and defoamer, increasesThe weight ratio of moulding agent, 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 silane coupler, titanate coupling agent, aluminate coupling agent, metal composite idolThe mixture of a kind of in connection agent, phosphate coupling agent, boric acid ester coupler or at least two kinds.
Further, described levelling agent is EFKA3570, EFKA3580, YCK-1360, BYK-333 and TEGOGlideA kind of or at least two kinds of mixtures in 100.
Further, described wetting agent is polysiloxanes, polyether-modified poly dimethyl polysiloxanes and polyester modificationOne in dimethyl silicone polymer.
Further, described defoamer is polyoxyethylene oxypropylene glycerine, polyoxyethylene polyoxypropylene pentaerythrite ether, poly-Oxygen ethene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether or polyoxypropylene.
The raw material relating in this application and equipment all can purchased and obtain on the market.
Originally compared with prior art, the beneficial effect that the present invention has is:
1, the present invention, by by the film forming agent after modification, is modified Casein-gelatin and optical absorbing agent, solvent and auxiliary agent and utilizes ball millingMethod be uniformly dispersed, add after coalescents mixes, obtain the solar energy heat absorbing coating that weatherability is high. This raw material systemStandby heat-absorbing paint out utilizes the method for ball milling can make raw material fully disperse, and without adding dispersant, and then reduces system againStandby cost; Successively utilize chemical modification, physical modification that casein and gelatin are carried out to modification, the modified Casein-gelatin conduct obtainingFilm forming agent in heat-absorbing paint raw material, can make the heat-absorbing paint preparing not rupture at-30 DEG C, and extensibility strengthens, resistance toCold energy, heat resistance are significantly improved, and have reduced the possibility of catching fire, and by chemical reaction, control the temperature of reaction, can makeObtain modified Casein-gelatin and react at applicable temperature, avoid reacting slow, increase the time of preparation or react too fast, changeProperty overdoes and occurs the problem of caking, and in course of reaction, dimethyl silicone polymer section is introduced in casein, gelatin structure, simultaneouslySeal and the property amino to whose sensitivity by force, on the groups such as carboxyl and hydroxyl, reduced the hydrophilic of the casein-gelatin after modificationProperty, has improved the water resistance of film forming.
2, the optical absorbing agent of the present invention's choosing can mix multiple color, can use cobalt blue powder, cobalt copper-manganese oxide and ward offPorcelain black or cobalt blue powder, cobalt copper-manganese oxide and organic carbon black are deployed into black; Or use chrome oxide green powder, selenium Cadmium Sulfide powder,Ferric oxide red powder is deployed into redness; Or use vulcanized lead and cobalt blue powder to be deployed into blueness; Or use chrome oxide green powder, white leadPowder and cobalt blue powder are deployed into green; The pleochroism that has increased coating, has solved color single, and the problem of ornamental difference makes thisThe coating that application prepares is applicable to, under multiple environment, to have larger generalization; And be deployed into black, redness, blueness orPerson's green has all been used shortwave district color to combine with long-wavelength region color, can significantly improve the absorptivity of sunshine.
3, the solvent of selecting in the present invention is to design for the film forming agent in the application (modified Casein-gelatin) specially,Can fast film forming agent be dissolved, then carry out ball milling together with other raw materials, mix dispersion, make the suction preparingThe distributed components of optical coating, density is close, after the sunshine heat-absorbing paint that uses the application to prepare is coated with ground,Absorb heat more even.
4, the various performances of improving coating of the present invention that auxiliary agent used in this application can be overall, select for the applicationFilm forming agent and pigment type, select the auxiliary agent matching specially, strengthens the various performances of coating of the present invention, the coupling of for example selectingAgent can improve the extensibility of coating, prevents the ground explosion after coating; The wetting agent of selecting can reduce the surface tension of coating,Increase the surperficial ability of coating moistening ground in coating; The levelling agent of selecting can carry out ground coating timeTime obtains smooth, smooth, a uniform film; The defoamer of selecting can suppress the material that foam produces, and it and liquid riseBubble material is together adsorbed on bubble, and surface tension is reduced, and vacuolar membrane attenuation, causes breakage, can prevent the phenomenon of bubbling.
5. preparation technology of the present invention is simple, understandable, and feasibility is high, and inhales after evidence coating is coated withReceive visible ray and infrared light performance high, thermal conductivity is high, and water proofing property is strong, high temperature resistant, corrosion-resistant, and stability is high, and emissivity is low, thoroughlyThe rate of penetrating is high, and coating adhesion is strong, and density is high, is the desirable high solar energy heat absorbing coating of weatherability, has great promotion priceValue.
Detailed description of the invention
Disclosed all features in this description, or step in disclosed all methods or process, except mutually exclusiveFeature and/or step beyond, all can combine by any way.
Disclosed arbitrary feature in this description (comprising any accessory claim, summary), unless narration especially all canReplaced by other equivalences or the alternative features with similar object. ,, unless narration especially, each feature is a series ofAn example in equivalence or similar characteristics.
Embodiment 1:
The solar energy heat absorbing coating that weatherability is high, raw material is:
Film forming agent: modified Casein-gelatin 50kg;
Coalescents: the special butyl ether 6kg of propylene glycol monomethyl ether 4kg propane diols;
Optical absorbing agent: cobalt blue powder 8kg, cobalt copper-manganese oxide 12kg, the black 15kg of enamel are deployed into black;
Solvent: acetic acid 6kg, acetic anhydride butyl ester 8kg, glycerine 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 even mixture;
Wetting agent: polysiloxanes 2kg;
Defoamer: polyoxyethylene oxypropylene glycerine 1kg.
The step of preparing the solar energy heat absorbing coating that weatherability is high according to above-mentioned raw material is as follows:
(1) be that 5:2 mix with gelatin according to weight ratio by casein, be casein 35.7kg, gelatin 14.3kg, then addEntering water 25kg, is to soak after 10min under 15 DEG C of conditions in temperature, adds according to weight part ratio methacrylic acid after moving to normal temperature againThe mixed liquor of hydroxyl ethyl ester: dimethyl silicone polymer=1:1, is to react after 5min under 70 DEG C of conditions in temperature, is cooled to normal temperature, thenStir 1min taking speed as 50r/min, then under 200 DEG C of conditions, calcine 5h, and the product after calcining is carried out to air-flow powderBroken, classification, controlling D50 is 10 μ m, then at 400 DEG C of high-temperature calcination 8h, carries out ball milling 1h after calcining, can obtain modified Casein-Gelatin;
(2) according to ratio of weight and number, optical absorbing agent and film forming agent, solvent and auxiliary agent are dropped in ball mill, start ball mill and carry outAfter ball milling operation 5min is uniformly dispersed each raw material ball milling, then after adding coalescents to mix, can obtain weatherabilityHigh solar energy heat absorbing coating.
Embodiment 2:
The solar energy heat absorbing coating that weatherability is high, raw material is:
Film forming agent: modified Casein-gelatin 100kg;
Coalescents: the special butyl ether 10kg of propane diols, DPG list propyl ether 10kg, Tri(propylene glycol)butyl ether,mixture of isomers 10kg;
Optical absorbing agent: use cobalt blue powder 10kg, cobalt copper-manganese oxide 20kg and organic carbon black 25kg to be deployed into black;
Solvent: glycerine 15kg, oxolane-propylene oxide copolymerization glycol 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 poly dimethyl polysiloxanes 2kg;
Defoamer: polyoxyethylene polyoxypropylene pentaerythrite ether 3kg;
The step of preparing the solar energy heat absorbing coating that weatherability is high according to above-mentioned raw material is as follows:
(1) be that 10:3 mix with gelatin according to weight ratio by casein, be casein 77kg, gelatin 23kg, then addWater 20kg, is to soak after 15min under 22 DEG C of conditions in temperature, adds according to weight part ratio methacrylic acid after moving to normal temperature againThe mixed liquor of hydroxyl ethyl ester: dimethyl silicone polymer=1:3, is to react after 15min under 72 DEG C of conditions in temperature, is cooled to normal temperature, thenStir 5min taking speed as 100r/min, then under 300 DEG C of conditions, calcine 10h, and the product after calcining is carried out to air-flow powderBroken, classification, controlling D50 is 20 μ m, then at 500 DEG C of high-temperature calcination 15h, carries out ball milling 3h after calcining, can obtain modified Casein-Gelatin;
(2) according to ratio of weight and number, optical absorbing agent and film forming agent, solvent and auxiliary agent are dropped in ball mill, start ball mill and carry outAfter ball milling operation 15min is uniformly dispersed each raw material ball milling, then after adding coalescents to mix, can obtain weatherabilityHigh solar energy heat absorbing coating.
Embodiment 3:
The solar energy heat absorbing coating that weatherability is high, raw material is:
Film forming agent: modified Casein-gelatin 80kg;
Coalescents: the special butyl ether 5kg of propane diols, the special butyl ether 10kg of propane diols, DPG list propyl ether 10kg;
Optical absorbing agent: use chrome oxide green powder 18kg, selenium Cadmium Sulfide 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: the mixture of phosphate coupling agent 2kg, boric acid ester coupler 2kg;
Levelling agent: BYK-3332kg and TEGOGlide1002kg mixture;
Wetting agent: the dimethyl silicone polymer 3kg of polyester modification;
Defoamer: polyoxypropylene 2kg.
The step of preparing the solar energy heat absorbing coating that weatherability is high according to above-mentioned raw material is as follows:
(1) be that 2:1 mix with gelatin according to weight ratio by casein, be casein 53kg, gelatin 27kg, then add water10kg, is to soak after 12min under 18 DEG C of conditions in temperature, adds according to weight part ratio hydroxyethyl methacrylate after moving to normal temperature againThe mixed liquor of ethyl ester: dimethyl silicone polymer=2:1, is to react after 9min under 75 DEG C of conditions in temperature, is cooled to normal temperature, then withSpeed be 60r/min stir 2min, then under 220 DEG C of conditions, calcine 6h, and by calcining after product carry out air-flow crushing,Classification, controlling D50 is 12 μ m, then at 420 DEG C of high-temperature calcination 10h, carries out ball milling 1.5h after calcining, can obtain modified Casein-Gelatin;
(2) according to ratio of weight and number, optical absorbing agent and film forming agent, solvent and auxiliary agent are dropped in ball mill, start ball mill and carry outAfter ball milling operation 8min is uniformly dispersed each raw material ball milling, then after adding coalescents to mix, can obtain weatherabilityHigh solar energy heat absorbing coating.
Embodiment 4:
The solar energy heat absorbing coating that weatherability is high, raw material is:
Film forming agent: modified Casein-gelatin 60kg;
Coalescents: propylene glycol monomethyl ether 15kg, the special butyl ether 15kg of propane diols, DPG list propyl ether 15kg, tripropylene glycol listButyl ether 15kg;
Optical absorbing agent: use vulcanized lead 20kg and cobalt blue powder 20kg to be deployed into blueness;
Solvent: acetic anhydride butyl ester 10kg, glycerine 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 dimethyl silicone polymer 2kg of polyester modification;
Defoamer: polypropylene glycerol aether 1kg;
The step of preparing the solar energy heat absorbing coating that weatherability is high according to above-mentioned raw material is as follows:
(1) be that 4:1 mix with gelatin according to weight ratio by casein, be casein 48kg, gelatin 12kg, then add water6.7kg, is to soak after 14min under 19 DEG C of conditions in temperature, adds according to weight part ratio hydroxyethyl methacrylate after moving to normal temperature againThe mixed liquor of ethyl ester: dimethyl silicone polymer=2:3, is to react after 12min under 80 DEG C of conditions in temperature, is cooled to normal temperature, thenStir 3min taking speed as 70r/min, then under 250 DEG C of conditions, calcine 7h, and the product after calcining is carried out to air-flow powderBroken, classification, controlling D50 is 16 μ m, then at 460 DEG C of high-temperature calcination 12h, carries out ball milling 2h after calcining, can obtain modified Casein-Gelatin;
(2) according to ratio of weight and number, optical absorbing agent and film forming agent, solvent and auxiliary agent are dropped in ball mill, start ball mill and carry outAfter ball milling operation 13min is uniformly dispersed each raw material ball milling, then after adding coalescents to mix, can obtain weatherabilityHigh solar energy heat absorbing coating.
Embodiment 5:
The solar energy heat absorbing coating that weatherability is high, raw material is:
Film forming agent: modified Casein-gelatin 75kg;
Coalescents: propylene glycol monomethyl ether 7kg, the special butyl ether 10kg of propane diols, DPG list propyl ether 5kg;
Optical absorbing agent: use chrome oxide green powder 25kg, white lead powder 5kg and cobalt blue powder 15kg to be deployed into green;
Solvent: acetic acid 12kg, acetic anhydride butyl ester 8kg, glycerine 7kg, oxolane-propylene oxide copolymerization glycol 5kg and poly-Ammonia ester polyether polyalcohol 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 of preparing the solar energy heat absorbing coating that weatherability is high according to above-mentioned raw material is as follows:
(1) be that 9:2 mix with gelatin according to weight ratio by casein, be casein 61kg, gelatin 14kg, then add waterWeight be 8.3kg, be to soak after 13min under 20 DEG C of conditions in temperature, add again according to weight part ratio methyl after moving to normal temperatureThe mixed liquor of hydroxy-ethyl acrylate: dimethyl silicone polymer=2:3, is to react after 11min under 78 DEG C of conditions in temperature, coolingTo normal temperature, then stir 4min taking speed as 80r/min, then under 280 DEG C of conditions, calcine 9h, and the product after calcining is enteredRow air-flow crushing, classification, controlling D50 is 19 μ m, then at 475 DEG C of high-temperature calcination 13h, carries out ball milling 2.5h after calcining, get final productTo modified Casein-gelatin;
(2) according to ratio of weight and number, optical absorbing agent and film forming agent, solvent and auxiliary agent are dropped in ball mill, start ball mill and carry outAfter ball milling operation 13min is uniformly dispersed each raw material ball milling, then after adding coalescents to mix, can obtain weatherabilityHigh solar energy heat absorbing coating.
The solar energy heat absorbing coating high to weatherability prepared in embodiment 1-5, direct spraying or brushing at normal temperaturesAt the heat absorption layer on surface of metal of heat absorption glass tube with vacuum inner layer sheet surface or flat-plate solar collector, before stenciling coating, needGlass or metal surface are carried out to cleaning is processed, metal surface reaches metal true qualities, and coating is stirred, then according to collectionThis coating of hot device type brushing thick 40-160 μ m coating or thicker.
By above-mentioned application operating procedure step, this coating solar energy heat absorbing coating of the thickness 60 μ m that obtain is carried out to skillThe test of art index test, test result is as shown in table 1:
Table 1 test result information slip
As seen from the above table, the solar energy heat absorbing coating that embodiment of the present invention 1-5 prepares weatherability is high absorb visible ray withInfrared light performance is high, and thermal conductivity is high, and water proofing property is strong, high temperature resistant, corrosion-resistant, and stability is high, and emissivity is low, and transmissivity is high, is coated withLayer strong adhesion, density is high, is the desirable high solar energy heat absorbing coating of weatherability.
The present invention is not limited to aforesaid detailed description of the invention. The present invention expands to any disclosure in this manualNew feature or any new combination, and the arbitrary new method disclosing or step or any new combination of process.
Claims (7)
1. the solar energy heat absorbing coating that weatherability is high, comprises film forming agent, optical absorbing agent, coalescents, solvent and auxiliary agent, its spyLevy and be, after utilizing the method for ball milling to be uniformly dispersed optical absorbing agent and film forming agent, solvent and auxiliary agent, then add coalescents to mixEvenly, can obtain the solar energy heat absorbing coating that weatherability is high; Described film forming agent, optical absorbing agent, coalescents, solvent and auxiliary agent are pressedCount according to ratio of weight and number: film forming agent 50-100 part; Coalescents 10-30 part; Optical absorbing agent 35-55 part; Solvent 20-50 part; HelpAgent 10-30 part; Described coalescents is the special butyl ether of propylene glycol monomethyl ether, propane diols, DPG list propyl ether, tripropylene glycol only sonAt least one mixture in ether; Described film forming agent is modified Casein-gelatin; The preparation method of described film forming agent is: will be according toWeight ratio casein: gelatin is that 5-10:2-3 mixes, and then adds water soaks after a period of time under 15 DEG C of-22 DEG C of conditions,After moving to normal temperature, add according to the mixed liquor of weight part ratio hydroxyethyl methacrylate: dimethyl silicone polymer=1-2:1-3, anti-Should, after a period of time, be cooled to normal temperature, then under 200-300 DEG C of condition, calcine 5-10h, and the product after calcining is carried out to gasStream is pulverized, classification, and controlling D50 is 10-20 μ m, then at 400-500 DEG C of high-temperature calcination 8-15h, carries out ball milling 1-3h, after calciningCan obtain modified Casein-gelatin.
2. the solar energy heat absorbing coating that a kind of weatherability is high according to claim 2, is characterized in that, the system of described film forming agentPreparation Method is: the speed of described stirring is 50-100r/min; The time of described stirring is 1-5min.
3. the solar energy heat absorbing coating that a kind of weatherability is high according to claim 2, is characterized in that, described in add the weight of waterAmount is the 1/10-1/5 of casein and gelatin gross weight.
4. the solar energy heat absorbing coating that a kind of weatherability is high according to claim 2, is characterized in that, the time of described immersionFor 10-15min; The time of described reaction is 5-15min, and the temperature of reaction is 70 DEG C-80 DEG C.
5. the high solar energy heat absorbing coating of a kind of weatherability according to claim 1, is characterized in that, described optical absorbing agent isCobalt blue powder, cobalt copper-manganese oxide and enamel is black or cobalt blue powder, cobalt copper-manganese oxide and organic carbon black are deployed into black; Or useChrome oxide green powder, selenium Cadmium Sulfide powder, ferric oxide red powder are deployed into redness; Or use vulcanized lead and cobalt blue powder to be deployed into blueness;Or use chrome oxide green powder, white lead powder and cobalt blue powder to be deployed into green.
6. the solar energy heat absorbing coating that a kind of weatherability is high according to claim 1, is characterized in that, described solvent is secondA kind of in acid, acetic anhydride butyl ester, glycerine, oxolane-propylene oxide copolymerization glycol and polyurethane polyureas ethoxylated polyhydric alcohol orSeveral.
7. the solar energy heat absorbing coating that a kind of weatherability is high according to claim 1, is characterized in that, described auxiliary agent is plasticisingAgent, coupling agent, levelling agent, wetting agent and defoamer, the weight ratio of plasticizer, coupling agent, levelling agent, wetting agent and defoamer is2-3:3-5:3-5:2-5:1-3。
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| CN108841280A (en) * | 2018-07-18 | 2018-11-20 | 合肥东恒锐电子科技有限公司 | A kind of electronic equipment heat-resisting paint and preparation method thereof |
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