CN105060898A - High-emissivity infrared energy-saving material preparation method - Google Patents
High-emissivity infrared energy-saving material preparation method Download PDFInfo
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Abstract
The present invention provides a high-emissivity infrared energy-saving material preparation method, and belongs to the technical field of infrared energy-saving materials. According to the prepared high-emissivity infrared energy-saving material, lanthanum aluminum oxide of the perovskite structure is adopted as the main phase, 0.01-0.25 mole of second main group element ions are doped at the lanthanum position, 0.02-0.5 mole of transition metal element ions are doped at the aluminum position, and the infrared emissivity of the material is 0.80-0.95. The preparation method is a high-temperature solid-phase reaction method, a flame spraying method or liquid-phase synthesis method. Mainly the material of the present invention has the following advantages that the highest emissivity of the infrared energy-saving material achieves 0.95, and the material has a good high temperature stability and has great application potential in the high temperature thermal furnace kiln energy saving field.
Description
Technical field
The present invention relates to infrared energy-conserving field of material technology, more particularly, relate to a kind of method preparing high emissivity infrared energy-conserving material.
Background technology
Thermal technology's stove is widely used in the high energy consumption industries such as iron and steel, petrochemical industry, cement and refractory materials, and according to national energy-saving center statistics, the energy that China's thermal technology's stove consumes every year accounts for more than 20% of whole nation year total energy consumption.But the evenly heat efficiency of China thermal technology stove only has 30%, on average reach thermal technology's stove thermo-efficiency of 50% far below developed country.Therefore promoting the thermo-efficiency of thermal technology's stove energetically, is the significant problem that China thermal technology stove relevant industries face.
Infrared energy-conserving material, is the infrared radiation heat transfer of a class by strengthening 1-5 mu m waveband, improves the novel material of thermal technology's stove thermo-efficiency.Put into practice from domestic and international report and related production, by infrared energy-conserving materials application in thermal technology's stove, can energy-conservation more than 5-25%.Therefore carry out infrared energy-conserving material development, China is realized having very important realistic meaning to low-carbon economy great-leap-forward development.
At present, the infrared energy-conserving material mainly non-oxide ceramics (referenced patent US7105047B2, WO2010019710A1, CN1552779A, CN101974259A) of domestic and international widespread use, as silicon carbide, silicon boride or the mixture of the two, its Key Performance Indicator---infrared emittance (ε) can reach about 0.8 to 0.9.But the common problem of this kind of non-oxide ceramics ubiquity resistance of oxidation difference, cannot the medium-term and long-term stable military service of oxidizing atmosphere at high temperature.In recent years, increasing investigator is devoted to the exploitation of high temperature oxidation objects system infrared energy-conserving material, acquired representative achievements mainly comprises: cordierite ceramic (S.Wang, EffectsofFeoncrystallizationandpropertiesofanewhighinfra redradianceglass-ceramics, Environ.Sci.Technol.44 (2010) 4816 – 4820.), wustite amorphous ceramic (L.Lu, X.Fan, J.Zhang, X.Hu, G.Li, Z.Zhang, Evolutionofstructureandinfraredradiationpropertiesforfer rite-basedamorphouscoating, Appl.Surf.Sci.316 (2014) 82 – 87.), magneto plumbite type hexa-aluminate pottery (H.Liu, Z.Liu, J.Ouyang, Y.Wang, Influencesoflatticevibrationandelectrontransitionontherm alemissivityofNd
3+dopedLaMgAl
11o
19hexaaluminatesformetallicthermalprotectionsystem, Appl.Phys.Lett.101 (2012) 161903.) etc., its infrared emittance is generally between 0.7 to 0.84.But in general, compared with the non-oxide ceramics such as silicon carbide, silicon boride, current developed oxide ceramics is at its Key Performance Indicator, and namely still there is larger gap infrared emittance aspect.Therefore, develop the oxide bulk series ceramic material with more high IR emittance and seem very necessary.
Kirchhoff thermal radiation law is pointed out, under thermal equilibrium condition, material is equal with its emittance in the specific absorption of the same band.Therefore, the infrared emittance improving material should be started with from its ir-absorbance of raising.At present, in this key issue of ir-absorbance how improving material, main guiding theory is that absorption of vibrations is theoretical, its essence is that molecular vibrational frequency caused coupling identical with infrared spectum absorbs.According to this theory, in order to improve the specific absorption of infrared energy-conserving material at 1-5 mu m waveband, its molecular vibrational frequency should be made consistent with the frequency of 1-5 mu m waveband infrared spectra.But the molecular vibrational frequency of most of high temperature ceramic material is positioned at the mid infrared region of wavelength 8-14 μm.Based on harmonic oscillator model and Hook's law known, by reduce atomic mass, strengthen interatomic bond make a concerted effort, can molecular vibrational frequency be improved, infrared absorption peak is moved to high frequency (shortwave) direction.It can thus be appreciated that, in pyroceramic, molecular vibrational frequency is the highest, charateristic avsorption band wavelength is the shortest should belong to boron-containing compound, such as norbide, boron nitride, but its charateristic avsorption band is positioned at 6-7 μm, namely its molecular vibrational frequency is consistent with the frequency of 6-7 mu m waveband infrared spectra.Can find out, using theoretical for the absorption of vibrations guiding theory as infrared energy-conserving material development, there is obvious wavelength mismatch problem, namely cannot be found the high temperature ceramic material of more high IR emittance by the guidance of absorption of vibrations theory.In prior art, absorption of vibrations theory cannot as the guiding theory of infrared energy-conserving material development, and the research and development of infrared energy-conserving material encounter the theory and technology bottleneck being difficult to overcome.
By patent retrieval, technical scheme existing relevant to infrared energy-conserving material development is at present open.Chinese Patent Application No.: 201110072727.7, the applying date: on March 25th, 2011, the name of innovation and creation is called: for the nanometer blackening agent and preparation method thereof of infrared radiative energy-saving coating, this application case relates to a kind of nanometer blackening agent for infrared radiative energy-saving coating and preparation method thereof.The preparation process of this nanometer blackening agent is: respectively compound concentration be 0.1-2.0mol/L be the basic solution of 8-13 containing the aqueous solution of transition-metal cation and pH value, first basic solution is added in the reaction vessel in microwave oven, be heated to 40-90 DEG C, in reaction vessel, pass into pressurized air again, stir; Then the prepared aqueous solution containing transition-metal cation is joined in reaction vessel, under 40-90 DEG C of condition, be incubated 0.5-7h then close microwave oven, naturally cool to room temperature, stop stirring, obtain solid, liquid mixture; Finally centrifugation is carried out to solid, liquid mixture, successively use water and absolute ethanol washing, drying, obtain the nanometer blackening agent for infrared radiative energy-saving coating.The weak point of this application case is, complicated process of preparation, the preparation cycle of nanometer blackening agent are long, and obtained nanometer blackening agent infrared emittance is not high, and resistance to elevated temperatures is not enough.
Chinese Patent Application No.: 200910084738.X, the applying date is on May 22nd, 2009, the name of innovation and creation is called: a kind of preparation method of blackening agent used for high-temperature infrared energy-conserving paint, and this application case relates to a kind of preparation method of blackening agent used for high-temperature infrared energy-conserving paint, belongs to fire resisting material field.In this application case blackening agent by having the chromite powder of high radiant rate, manganese oxide, cobalt oxide, the oxide compound such as cupric oxide and nickel oxide form, by above each raw material in proportion fully levigate mix after, briquetting or directly at high temperature sintered heat insulating for some time, again levigately namely obtain required powder to specified dimension.In this application case, blackening agent is mainly used in the coating that the process furnace of high alumina brick, mullite brick and metal and heat treatment furnace inwall use.The weak point of this application case is mainly: the fusing point of (1), blackening agent is not high, and resistance to elevated temperatures is not enough; (2), the later stage needs to realize thinning processing by ball-milling technology, but ball-milling processing itself is a high energy consumption process, and can introduce impurity in mechanical milling process, usually causes the fluctuation of composition in material, affects infrared emittance and the energy-saving effect of material.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to overcome the infrared emittance of existing infrared energy-conserving material lower or can not the problem of the medium-term and long-term stable military service of oxidizing atmosphere at high temperature, provide a kind of method preparing high emissivity infrared energy-conserving material, achieve the target of the infrared emittance improving infrared energy-conserving material, and this high emissivity infrared energy-conserving material can the medium-term and long-term stable military service of oxidizing atmosphere at high temperature.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
Theoretical according to Semiconductor absorption, in matrix, introduce suitable impurity, in forbidden band, form the impurity level corresponding to 1-5 mu m waveband, the specific absorption of semi-conductor at this wave band can be strengthened by transition of electron mechanism.Therefore, being matrix with high temperature semiconductors and carrying out suitable doping, is a kind of effective way obtaining high emissivity infrared energy-conserving material.Lanthanum aluminate is a kind of high-temperature oxide semi-conductor of perovskite structure, the chemical composition having good high-temperature stability and match with the high alumina refractories that High-temp. kiln extensively adopts and thermal property, the present invention provides a kind of method preparing high emissivity infrared energy-conserving material as matrix.
Contriver is at paper " Ca
2+-DopedLaCrO
3: ANovelEnergy-SavingMaterialwithHighInfraredEmissivity " in report a kind of take Lanthanum Chromite as the high emission infrared energy-conserving material of matrix.The present invention is relative to the major advance part of this paper: (1) is matrix with lanthanum aluminate, substitute volatile, highly toxic chromium element, and prepared material still has high emittance with cheap, nontoxic aluminium element; (2) clearly propose, introducing the impurity level corresponding to 1-5 mu m waveband is improve the key point of infrared energy-conserving material emittance, and this viewpoint not yet clear and definite in paper, namely think that impurity level, free carrier, lattice vibration three kinds of factors all have vital role for raising infrared energy-conserving material emittance.
It should be noted that, paper " Ca herein
2+-DopedLaCrO
3: ANovelEnergy-SavingMaterialwithHighInfraredEmissivity " only provide at conclusion place: " Ca
2+doping strengthens LaCrO
3the mechanism of emittance is by impurity level, free carrier and lattice vibration three kinds of controlling factors ", those skilled in the art consults paper " Ca
2+-DopedLaCrO
3: ANovelEnergy-SavingMaterialwithHighInfraredEmissivity " after clearly cannot learn the key point improving infrared energy-conserving material emittance; namely can not find a theoretical direction accurately and reliably, the general applicable elements improving infrared energy-conserving material emittance after therefore those skilled in the art consults paper, cannot be provided.Applicant is through theoretical investigation and the creationary discovery of a large amount of experiments chronically: introducing the impurity level corresponding to 1-5 mu m waveband is improve the key point of infrared energy-conserving material emittance, based on this theoretical direction, inventors herein propose technical scheme of the present invention.
Need especially it is emphasised that, in the process of preparation high emissivity infrared energy-conserving material, need the theoretical direction of science, lack scientific and effective theoretical direction, be difficult to the concrete technical scheme drawing preparation high emissivity infrared energy-conserving material, and paper " Ca
2+-DopedLaCrO
3: ANovelEnergy-SavingMaterialwithHighInfraredEmissivity " in " Ca that points out
2+doping strengthens LaCrO
3spectral emittance at infrared band " be also only a result of testing; and those skilled in the art is iff consulting paper; must sum up and propose technical scheme of the present invention, and technical scheme of the present invention is that applicant obtains based on long-term theory research and great many of experiments summary.The infrared energy-conserving material that the present invention simultaneously proposes is one of high-temperature oxide material that the current emittance found is the highest, two-fold advantage of being on active service steady in a long-term under there is high IR emittance and high temperature, relative to existing infrared energy-conserving material, there is significant progressive meaning, China is realized having very important realistic meaning to low-carbon economy great-leap-forward development.
A kind of high temperature solid state reaction of the present invention prepares the method for high emissivity infrared energy-conserving material, comprises the steps,
(1) prepare burden: the raw material of high emissivity infrared energy-conserving material is prepared burden, the raw material of described high emissivity infrared energy-conserving material is by the compound of lanthanum, the compound of aluminium, doping agent I and doping agent II are prepared from, the compound of described lanthanum is lanthanum trioxide, lanthanum hydroxide, Phosbloc, one or more mixing in lanthanum nitrate, the compound of described aluminium is aluminum oxide, one or both mixing in aluminium hydroxide, described doping agent I is the oxide compound of the second main group element, oxyhydroxide, carbonate, one or more mixing in nitrate, described doping agent II is the oxide compound of transition metal, oxyhydroxide, carbonate, one or more mixing in nitrate,
(2) calcine: the raw material after batching in step (1) is calcined 30-360min in the air atmosphere of 1200-1600 DEG C, makes it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material.
As a further improvement on the present invention, high emissivity infrared energy-conserving material prepared by high temperature solid state reaction with the lanthanum aluminate of perovskite structure for principal phase, and at the second main group element ion of unit mole lanthanum position doping 0.01-0.25 mole, at the transition metal ion of unit moles, of aluminum per mole of titanium metal position doping 0.02-0.5 mole.
As a further improvement on the present invention, the infrared emittance of high emissivity infrared energy-conserving material that prepared by high temperature solid state reaction is 0.80-0.95.
As a further improvement on the present invention, high temperature solid state reaction is prepared in the method for high emissivity infrared energy-conserving material, the compound of lanthanum is lanthanum trioxide, the compound of aluminium is aluminum oxide, doping agent I is one or more the mixing in magnesium oxide, calcium oxide, strontium oxide, barium oxide, and doping agent II is one or more the mixing in chromic oxide, manganese oxide, ferric oxide, nickel oxide.
The method of high emissivity infrared energy-conserving material is prepared in a kind of flame plating of the present invention, comprises the steps,
(1) prepare burden: the raw material of high emissivity infrared energy-conserving material is prepared burden, the raw material of described high emissivity infrared energy-conserving material is by the compound of lanthanum, the compound of aluminium, doping agent I and doping agent II are prepared from, the compound of described lanthanum is lanthanum trioxide, lanthanum hydroxide, Phosbloc, one or more mixing in lanthanum nitrate, the compound of described aluminium is aluminum oxide, one or both mixing in aluminium hydroxide, described doping agent I is the oxide compound of the second main group element, oxyhydroxide, carbonate, one or more mixing in nitrate, described doping agent II is the oxide compound of transition metal, oxyhydroxide, carbonate, one or more mixing in nitrate,
(2) flame plating: the raw material after batching in step (1) is prepared non-crystalline state presoma by flame spraying; Wherein: the temperature of flame is 2000-3500 DEG C;
(3) thermal treatment: by the non-crystalline state presoma thermal treatment 30-120min prepared in step (2), finally prepare the powder of high emissivity infrared energy-conserving material; Wherein: the thermal treatment crystallization temperature of non-crystalline state presoma is 600-1200 DEG C.
As a further improvement on the present invention, high emissivity infrared energy-conserving material prepared by flame plating with the lanthanum aluminate of perovskite structure for principal phase, and at the second main group element ion of unit mole lanthanum position doping 0.01-0.25 mole, at the transition metal ion of unit moles, of aluminum per mole of titanium metal position doping 0.02-0.5 mole.
As a further improvement on the present invention, the infrared emittance of high emissivity infrared energy-conserving material that prepared by flame plating is 0.80-0.95.
As a further improvement on the present invention, in the method for high emissivity infrared energy-conserving material prepared by flame plating, the compound of lanthanum is lanthanum trioxide, the compound of aluminium is aluminum oxide, doping agent I is one or more the mixing in magnesium oxide, calcium oxide, strontium oxide, barium oxide, and doping agent II is one or more the mixing in chromic oxide, manganese oxide, ferric oxide, nickel oxide.
A kind of liquid phase synthesis of the present invention prepares the method for high emissivity infrared energy-conserving material, comprises the steps,
(1) prepare burden: the raw material of high emissivity infrared energy-conserving material is prepared burden, the raw material of described high emissivity infrared energy-conserving material is by the compound of lanthanum, the compound of aluminium, doping agent I and doping agent II are prepared from, the compound of described lanthanum is lanthanum trioxide, lanthanum hydroxide, Phosbloc, one or more mixing in lanthanum nitrate, the compound of described aluminium is aluminum oxide, one or both mixing in aluminium hydroxide, described doping agent I is the oxide compound of the second main group element, oxyhydroxide, carbonate, one or more mixing in nitrate, described doping agent II is the oxide compound of transition metal, oxyhydroxide, carbonate, one or more mixing in nitrate,
(2) liquid phase synthesis: it is in the aqueous solution of 4-6 that the raw material after batching in step (1) is joined pH value, prepares presoma by liquid phase synthesis reaction;
(3) calcine: the presoma prepared in step (2) is calcined 30-120min under 600-1200 DEG C of condition, finally prepares the powder of high emissivity infrared energy-conserving material.
As a further improvement on the present invention, high emissivity infrared energy-conserving material prepared by liquid phase synthesis with the lanthanum aluminate of perovskite structure for principal phase, and at the second main group element ion of unit mole lanthanum position doping 0.01-0.25 mole, at the transition metal ion of unit moles, of aluminum per mole of titanium metal position doping 0.02-0.5 mole.
As a further improvement on the present invention, the infrared emittance of high emissivity infrared energy-conserving material that prepared by liquid phase synthesis is 0.80-0.95.
As a further improvement on the present invention, liquid phase synthesis is prepared in the method for high emissivity infrared energy-conserving material, the compound of lanthanum is lanthanum trioxide, the compound of aluminium is aluminum oxide, doping agent I is one or more the mixing in magnesium oxide, calcium oxide, strontium oxide, barium oxide, and doping agent II is one or more the mixing in chromic oxide, manganese oxide, ferric oxide, nickel oxide.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following unusual effect:
(1) infrared emittance of the high emissivity infrared energy-conserving material prepared by the present invention is up to 0.95, reach the infrared emittance level of existing silicon carbide infrared energy-conserving material, and higher than the infrared emittance of existing high temperature oxidation objects system infrared energy-conserving material.
(2) the high emissivity infrared energy-conserving material prepared by the present invention belongs to high-temperature oxide system material, can stablize military service for a long time in up to the high temperature oxidative atmosphere of 1700 DEG C.
(3) the high emissivity infrared energy-conserving material prepared by the present invention take aluminum oxide as one of main component, and its chemical composition and high alumina refractories match, and has huge application potential in high temperature thermal technology furnace energy-saving field.
(4) raw material of the high emissivity infrared energy-conserving material prepared by the present invention is easy to get, and preparation technology is simple, and production cost is low, is easy to realize industrialization and produces.
Accompanying drawing explanation
Fig. 1 is the XRD figure spectrum of high emissivity infrared energy-conserving material in embodiment 1;
Fig. 2 is the TG-DTA curve of high emissivity infrared energy-conserving material reaction process in embodiment 1;
Fig. 3 is the XPS spectrum of transition metal ion in high emissivity infrared energy-conserving material in embodiment 1;
Fig. 4 is the spectral emissions rate curve of high emissivity infrared energy-conserving material in embodiment 1.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Lanthanum hydroxide, aluminum oxide, calcium carbonate, chromic oxide in molar ratio 1:1:0.1:0.25 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 360min in the air atmosphere of 1600 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.95, and median size is 12 μm.
As can be seen from Figure 1: in the present embodiment, the thing of high emissivity infrared energy-conserving material is the lanthanum aluminate (LaAlO of perovskite structure mutually
3); Do not observe other dephasigns, show the composition such as calcium, chromium solid solution enter the lattice of lanthanum aluminate, define calcium, chromium doping lanthanum aluminate base ceramic material.
As can be seen from Figure 2: in the present embodiment, the synthesis temperature of high emissivity infrared energy-conserving material is about 1300 DEG C, the exothermic peak corresponding to this temperature is the characteristic peak of this building-up reactions; After this, do not observe under the hot conditions of 1300-1700 DEG C and significantly inhale exothermic phenomenon and changes in weight, show that this material has good high-temperature stability.
As can be seen from Figure 3: in the present embodiment, high emissivity infrared energy-conserving material contains a certain amount of Cr
3+and Cr
4+, this shows that lanthanum aluminate Medium Culture exists transition metal impurity ion, defines corresponding impurity level; The interact transition of electron that formed of these impurity levels and infrared photon can strengthen the infrared emittance of this material, thus significantly improves its infrared radiation property.
As can be seen from Figure 4: in the present embodiment, high emissivity infrared energy-conserving material is in the infrared emittance of 1-5 mu m waveband up to 0.95, and this is one of high-temperature oxide material that the current emittance found is the highest.
Embodiment 2
Lanthanum trioxide, aluminum oxide, calcium oxide, chromic oxide in molar ratio 1:1:0.01:0.02 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 300min in the air atmosphere of 1200 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.80, and median size is 3 μm.
Embodiment 3
Lanthanum trioxide, aluminium hydroxide, calcium carbonate, ferric oxide in molar ratio 1:1:0.25:0.5 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 300min in the air atmosphere of 1400 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.92, and median size is 4 μm.
Embodiment 4
Lanthanum trioxide, aluminum oxide, calcium carbonate, manganese oxide in molar ratio 1:1:0.2:0.35 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 280min in the air atmosphere of 1200 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.93, and median size is 10 μm.
Embodiment 5
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 100min in the air atmosphere of 1350 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.94, and median size is 6 μm.
Embodiment 6
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel hydroxide, chromic oxide in molar ratio 1:1:0.1:0.1:0.15:0.35 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 60min in the air atmosphere of 1400 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.94, and median size is 6 μm.
Embodiment 7
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 150min in the air atmosphere of 1350 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.94, and median size is 6 μm.
Embodiment 8
Lanthanum hydroxide, Phosbloc, aluminium hydroxide, aluminium carbonate, hydrated barta, manganese oxide in molar ratio 0.5:0.5:0.8:0.2:0.2:0.1 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 100min in the air atmosphere of 1450 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.88, and median size is 4 μm.
Embodiment 9
Lanthanum nitrate, aluminum nitrate, strontium nitrate, nickelous nitrate in molar ratio 1:1:0.2:0.3 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 200min in the air atmosphere of 1550 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.90, and median size is 2 μm.
Embodiment 10
Lanthanum trioxide, aluminum oxide, calcium oxide, nickel oxide in molar ratio 1:1:0.25:0.5 carry out preparing burden and grinding, mixing raw material powder after grinding is calcined 30min in the air atmosphere of 1200 DEG C, make it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.92, and median size is 20 μm.
Embodiment 11
Lanthanum hydroxide, aluminum oxide, calcium carbonate, chromic oxide in molar ratio 1:1:0.1:0.25 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 3500 DEG C; Then non-crystalline state presoma is placed on thermal treatment 100min in process furnace, wherein: thermal treatment crystallization temperature is 1000 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.95, and median size is 12 μm.
Embodiment 12
Lanthanum trioxide, aluminum oxide, calcium oxide, chromic oxide in molar ratio 1:1:0.01:0.02 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 2000 DEG C; Then non-crystalline state presoma is placed on thermal treatment 120min in process furnace, wherein: thermal treatment crystallization temperature is 1000 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.80, and median size is 3 μm.
Embodiment 13
Lanthanum trioxide, aluminium hydroxide, calcium carbonate, ferric oxide in molar ratio 1:1:0.25:0.5 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 2300 DEG C; Then non-crystalline state presoma is placed on thermal treatment 80min in process furnace, wherein: thermal treatment crystallization temperature is 1200 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.92, and median size is 4 μm.
Embodiment 14
Lanthanum trioxide, aluminum oxide, calcium carbonate, manganese oxide in molar ratio 1:1:0.2:0.35 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 2500 DEG C; Then non-crystalline state presoma is placed on thermal treatment 100min in process furnace, wherein: thermal treatment crystallization temperature is 800 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.93, and median size is 10 μm.
Embodiment 15
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 2700 DEG C; Then non-crystalline state presoma is placed on thermal treatment 100min in process furnace, wherein: thermal treatment crystallization temperature is 1100 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.94, and median size is 6 μm.
Embodiment 16
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel hydroxide, chromic oxide in molar ratio 1:1:0.1:0.1:0.15:0.35 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 3000 DEG C; Then non-crystalline state presoma is placed on thermal treatment 30min in process furnace, wherein: thermal treatment crystallization temperature is 1200 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.94, and median size is 6 μm.
Embodiment 17
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 3500 DEG C; Then non-crystalline state presoma is placed on thermal treatment 100min in process furnace, wherein: thermal treatment crystallization temperature is 1000 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.94, and median size is 6 μm.
Embodiment 18
Lanthanum hydroxide, Phosbloc, aluminium hydroxide, aluminium carbonate, hydrated barta, manganese oxide in molar ratio 0.5:0.5:0.8:0.2:0.2:0.1 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 3300 DEG C; Then non-crystalline state presoma is placed on thermal treatment 100min in process furnace, wherein: thermal treatment crystallization temperature is 1000 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.88, and median size is 4 μm.
Embodiment 19
Lanthanum nitrate, aluminum nitrate, strontium nitrate, nickelous nitrate in molar ratio 1:1:0.2:0.3 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 3500 DEG C; Then non-crystalline state presoma is placed on thermal treatment 120min in process furnace, wherein: thermal treatment crystallization temperature is 1200 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.90, and median size is 2 μm.
Embodiment 20
Lanthanum trioxide, aluminum oxide, calcium oxide, nickel oxide in molar ratio 1:1:0.25:0.5 prepare burden, by batching after raw material prepare non-crystalline state presoma by flame spraying; Wherein: the flame in flame spraying is acetylene flame, the temperature of acetylene flame is 2000 DEG C; Then non-crystalline state presoma is placed on thermal treatment 30min in process furnace, wherein: thermal treatment crystallization temperature is 600 DEG C, finally prepares the powder of high emissivity infrared energy-conserving material; The infrared emittance of gained powder is 0.92, and median size is 20 μm.
Embodiment 21
Lanthanum hydroxide, aluminum oxide, calcium carbonate, chromic oxide in molar ratio 1:1:0.1:0.25 prepare burden, by the raw material after batching, to join pH value be in the aqueous solution of 4, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 30min under 600 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.95, and median size is 12 μm.
Embodiment 22
Lanthanum trioxide, aluminum oxide, calcium oxide, chromic oxide in molar ratio 1:1:0.01:0.02 prepare burden, by the raw material after batching, to join pH value be in the aqueous solution of 5, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 50min under 700 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.80, and median size is 3 μm.
Embodiment 23
Lanthanum trioxide, aluminium hydroxide, calcium carbonate, ferric oxide in molar ratio 1:1:0.25:0.5 prepare burden, by the raw material after batching, to join pH value be in the aqueous solution of 6, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 60min under 750 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.92, and median size is 4 μm.
Embodiment 24
Lanthanum trioxide, aluminum oxide, calcium carbonate, manganese oxide in molar ratio 1:1:0.2:0.35 prepare burden, by the raw material after batching, to join pH value be in the aqueous solution of 5, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 70min under 800 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.93, and median size is 10 μm.
Embodiment 25
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 prepare burden, it is in the aqueous solution of 4 that raw material after batching is joined pH value, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 80min under 850 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.94, and median size is 6 μm.
Embodiment 26
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel hydroxide, chromic oxide in molar ratio 1:1:0.1:0.1:0.15:0.35 prepare burden, it is in the aqueous solution of 6 that raw material after batching is joined pH value, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 90min under 900 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.94, and median size is 6 μm.
Embodiment 27
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 prepare burden, it is in the aqueous solution of 5 that raw material after batching is joined pH value, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 100min under 1000 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.94, and median size is 6 μm.
Embodiment 28
Lanthanum hydroxide, Phosbloc, aluminium hydroxide, aluminium carbonate, hydrated barta, manganese oxide in molar ratio 0.5:0.5:0.8:0.2:0.2:0.1 prepare burden, it is in the aqueous solution of 6 that raw material after batching is joined pH value, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 110min under 1100 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.88, and median size is 4 μm.
Embodiment 29
Lanthanum nitrate, aluminum nitrate, strontium nitrate, nickelous nitrate in molar ratio 1:1:0.2:0.3 prepare burden, by the raw material after batching, to join pH value be in the aqueous solution of 4, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 120min under 1150 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.90, and median size is 2 μm.
Embodiment 30
Lanthanum trioxide, aluminum oxide, calcium oxide, nickel oxide in molar ratio 1:1:0.25:0.5 prepare burden, by the raw material after batching, to join pH value be in the aqueous solution of 6, prepares presoma by liquid phase synthesis reaction; Presoma is filtered out, and with washes of absolute alcohol, then presoma is put into vacuum drying oven drying; Dried presoma is calcined 30min under 1000 DEG C of conditions, finally prepares the powder of high emissivity infrared energy-conserving material, the infrared emittance of this high emissivity infrared energy-conserving material is 0.92, and median size is 20 μm.
Embodiment 31
Lanthanum hydroxide, aluminum oxide, calcium carbonate, chromic oxide in molar ratio 1:1:0.1:0.25 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 360min in the air atmosphere of 1600 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 3%, account for infrared energy-conserving paint mass ratio be 10% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 2% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.95, thickness is 0.5mm.
Embodiment 32
Lanthanum trioxide, aluminum oxide, calcium oxide, chromic oxide in molar ratio 1:1:0.01:0.02 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 300min in the air atmosphere of 1200 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 3.5%, account for infrared energy-conserving paint mass ratio be 15% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 2.5% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.80, thickness is 1mm.
Embodiment 33
Lanthanum trioxide, aluminium hydroxide, calcium carbonate, ferric oxide in molar ratio 1:1:0.25:0.5 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 300min in the air atmosphere of 1400 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 4%, account for infrared energy-conserving paint mass ratio be 20% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 3% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.92, thickness is 1.5mm.
Embodiment 34
Lanthanum trioxide, aluminum oxide, calcium carbonate, manganese oxide in molar ratio 1:1:0.2:0.35 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 280min in the air atmosphere of 1200 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 4.5%, account for infrared energy-conserving paint mass ratio be 25% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 3.5% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.93, thickness is 2mm.
Embodiment 35
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 100min in the air atmosphere of 1350 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 5%, account for infrared energy-conserving paint mass ratio be 30% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 4% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.94, thickness is 2.5mm.
Embodiment 36
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel hydroxide, chromic oxide in molar ratio 1:1:0.1:0.1:0.15:0.35 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 60min in the air atmosphere of 1400 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 5%, account for infrared energy-conserving paint mass ratio be 50% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 5% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.94, thickness is 3mm.
Embodiment 37
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 150min in the air atmosphere of 1350 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 3%, account for infrared energy-conserving paint mass ratio be 45% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 4.5% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.94, thickness is 3mm.
Embodiment 38
Lanthanum hydroxide, Phosbloc, aluminium hydroxide, aluminium carbonate, hydrated barta, manganese oxide in molar ratio 0.5:0.5:0.8:0.2:0.2:0.1 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 100min in the air atmosphere of 1450 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 3%, account for infrared energy-conserving paint mass ratio be 50% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 4% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.88, thickness is 1mm.
Embodiment 39
Lanthanum nitrate, aluminum nitrate, strontium nitrate, nickelous nitrate in molar ratio 1:1:0.2:0.3 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 200min in the air atmosphere of 1550 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 5%, account for infrared energy-conserving paint mass ratio be 10% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 5% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.9, thickness is 2mm.
Embodiment 40
Lanthanum trioxide, aluminum oxide, calcium oxide, nickel oxide in molar ratio 1:1:0.25:0.5 carries out preparing burden and grinding, mixing raw material powder after grinding is calcined 30min in the air atmosphere of 1200 DEG C, make it that high temperature solid state reaction occur, prepare the powder of high emissivity infrared energy-conserving material, then add and account for the dispersion agent that infrared energy-conserving paint mass ratio is 3%, account for infrared energy-conserving paint mass ratio be 35% liquid phase binding agent and account for infrared energy-conserving paint mass ratio be 2.5% stablizer be prepared into coating and be coated in high temperature kiln cavity inner wall high alumina brick surface, the infrared emittance of gained coating is 0.92, thickness is 2.5mm.
Embodiment 41
Lanthanum hydroxide, aluminum oxide, calcium carbonate, chromic oxide in molar ratio 1:1:0.1:0.25 prepare burden, raw material after batching is made base substrate at 10MPa pressure, then in the air of 1600 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.95, and average grain size is 4 μm.
Embodiment 42
Lanthanum trioxide, aluminum oxide, calcium oxide, chromic oxide in molar ratio 1:1:0.01:0.02 prepare burden, raw material after batching is made base substrate at 15MPa pressure, then in the air of 1500 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.80, and average grain size is 3 μm.
Embodiment 43
Lanthanum trioxide, aluminium hydroxide, calcium carbonate, ferric oxide in molar ratio 1:1:0.25:0.5 prepare burden, raw material after batching is made base substrate at 20MPa pressure, then in the air of 1700 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.92, and average grain size is 4 μm.
Embodiment 44
Lanthanum trioxide, aluminum oxide, calcium carbonate, manganese oxide in molar ratio 1:1:0.2:0.35 prepare burden, raw material after batching is made base substrate at 25MPa pressure, then in the air of 1400 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.93, and average grain size is 10 μm.
Embodiment 45
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 prepare burden, raw material after batching is made base substrate at 30MPa pressure, then in the air of 1450 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.94, and average grain size is 6 μm.
Embodiment 46
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel hydroxide, chromic oxide in molar ratio 1:1:0.1:0.1:0.15:0.35 prepare burden, raw material after batching is made base substrate at 35MPa pressure, then in the air of 1500 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.94, and average grain size is 6 μm.
Embodiment 47
Lanthanum hydroxide, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, nickel oxide, ironic hydroxide in molar ratio 1:1:0.1:0.1:0.2:0.2 prepare burden, raw material after batching is made base substrate at 40MPa pressure, then in the air of 1550 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.94, and average grain size is 6 μm.
Embodiment 48
Lanthanum hydroxide, Phosbloc, aluminium hydroxide, aluminium carbonate, hydrated barta, manganese oxide in molar ratio 0.5:0.5:0.8:0.2:0.2:0.1 prepare burden, raw material after batching is made base substrate at 45MPa pressure, then in the air of 1600 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.88, and average grain size is 4 μm.
Embodiment 49
Lanthanum nitrate, aluminum nitrate, strontium nitrate, nickelous nitrate in molar ratio 1:1:0.2:0.3 prepare burden, raw material after batching is made base substrate at 50MPa pressure, then in the air of 1650 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.90, and average grain size is 2 μm.
Embodiment 50
Lanthanum trioxide, aluminum oxide, calcium oxide, nickel oxide in molar ratio 1:1:0.25:0.5 prepare burden, raw material after batching is made base substrate at 50MPa pressure, then in the air of 1700 DEG C, 60min is sintered, products therefrom is pottery, the infrared emittance of this pottery is 0.92, and average grain size is 20 μm.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (10)
1. high temperature solid state reaction prepares a method for high emissivity infrared energy-conserving material, it is characterized in that, comprises the steps,
(1) prepare burden: the raw material of high emissivity infrared energy-conserving material is prepared burden, the raw material of described high emissivity infrared energy-conserving material is by the compound of lanthanum, the compound of aluminium, doping agent I and doping agent II are prepared from, the compound of described lanthanum is lanthanum trioxide, lanthanum hydroxide, Phosbloc, one or more mixing in lanthanum nitrate, the compound of described aluminium is aluminum oxide, one or both mixing in aluminium hydroxide, described doping agent I is the oxide compound of the second main group element, oxyhydroxide, carbonate, one or more mixing in nitrate, described doping agent II is the oxide compound of transition metal, oxyhydroxide, carbonate, one or more mixing in nitrate,
(2) calcine: the raw material after batching in step (1) is calcined 30-360min in the air atmosphere of 1200-1600 DEG C, makes it that high temperature solid state reaction occur, finally prepare the powder of high emissivity infrared energy-conserving material.
2. a kind of high temperature solid state reaction according to claim 1 prepares the method for high emissivity infrared energy-conserving material, it is characterized in that, described high emissivity infrared energy-conserving material with the lanthanum aluminate of perovskite structure for principal phase, and at the second main group element ion of unit mole lanthanum position doping 0.01-0.25 mole, at the transition metal ion of unit moles, of aluminum per mole of titanium metal position doping 0.02-0.5 mole.
3. a kind of high temperature solid state reaction according to claim 1 prepares the method for high emissivity infrared energy-conserving material, it is characterized in that, the infrared emittance of described high emissivity infrared energy-conserving material is 0.80-0.95.
4. a kind of high temperature solid state reaction according to claim 1 prepares the method for high emissivity infrared energy-conserving material, it is characterized in that, the compound of described lanthanum is lanthanum trioxide, the compound of aluminium is aluminum oxide, doping agent I is one or more the mixing in magnesium oxide, calcium oxide, strontium oxide, barium oxide, and doping agent II is one or more the mixing in chromic oxide, manganese oxide, ferric oxide, nickel oxide.
5. a method for high emissivity infrared energy-conserving material is prepared in flame plating, it is characterized in that, comprises the steps,
(1) prepare burden: the raw material of high emissivity infrared energy-conserving material is prepared burden, the raw material of described high emissivity infrared energy-conserving material is by the compound of lanthanum, the compound of aluminium, doping agent I and doping agent II are prepared from, the compound of described lanthanum is lanthanum trioxide, lanthanum hydroxide, Phosbloc, one or more mixing in lanthanum nitrate, the compound of described aluminium is aluminum oxide, one or both mixing in aluminium hydroxide, described doping agent I is the oxide compound of the second main group element, oxyhydroxide, carbonate, one or more mixing in nitrate, described doping agent II is the oxide compound of transition metal, oxyhydroxide, carbonate, one or more mixing in nitrate,
(2) flame plating: the raw material after batching in step (1) is prepared non-crystalline state presoma by flame spraying; Wherein: the temperature of flame is 2000-3500 DEG C;
(3) thermal treatment: by the non-crystalline state presoma thermal treatment 30-120min prepared in step (2), finally prepare the powder of high emissivity infrared energy-conserving material; Wherein: the thermal treatment crystallization temperature of non-crystalline state presoma is 600-1200 DEG C.
6. the method for high emissivity infrared energy-conserving material is prepared in a kind of flame plating according to claim 5, it is characterized in that, described high emissivity infrared energy-conserving material with the lanthanum aluminate of perovskite structure for principal phase, and at the second main group element ion of unit mole lanthanum position doping 0.01-0.25 mole, at the transition metal ion of unit moles, of aluminum per mole of titanium metal position doping 0.02-0.5 mole.
7. the method for high emissivity infrared energy-conserving material is prepared in a kind of flame plating according to claim 5, it is characterized in that, the infrared emittance of described high emissivity infrared energy-conserving material is 0.80-0.95.
8. liquid phase synthesis prepares a method for high emissivity infrared energy-conserving material, it is characterized in that, comprises the steps,
(1) prepare burden: the raw material of high emissivity infrared energy-conserving material is prepared burden, the raw material of described high emissivity infrared energy-conserving material is by the compound of lanthanum, the compound of aluminium, doping agent I and doping agent II are prepared from, the compound of described lanthanum is lanthanum trioxide, lanthanum hydroxide, Phosbloc, one or more mixing in lanthanum nitrate, the compound of described aluminium is aluminum oxide, one or both mixing in aluminium hydroxide, described doping agent I is the oxide compound of the second main group element, oxyhydroxide, carbonate, one or more mixing in nitrate, described doping agent II is the oxide compound of transition metal, oxyhydroxide, carbonate, one or more mixing in nitrate,
(2) liquid phase synthesis: it is in the aqueous solution of 4-6 that the raw material after batching in step (1) is joined pH value, prepares presoma by liquid phase synthesis reaction;
(3) calcine: the presoma prepared in step (2) is calcined 30-120min under 600-1200 DEG C of condition, finally prepares the powder of high emissivity infrared energy-conserving material.
9. a kind of liquid phase synthesis according to claim 8 prepares the method for high emissivity infrared energy-conserving material, it is characterized in that, described high emissivity infrared energy-conserving material with the lanthanum aluminate of perovskite structure for principal phase, and at the second main group element ion of unit mole lanthanum position doping 0.01-0.25 mole, at the transition metal ion of unit moles, of aluminum per mole of titanium metal position doping 0.02-0.5 mole.
10. a kind of liquid phase synthesis according to claim 8 prepares the method for high emissivity infrared energy-conserving material, it is characterized in that, the infrared emittance of described high emissivity infrared energy-conserving material is 0.80-0.95.
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| CN110483046B (en) * | 2019-09-26 | 2021-06-29 | 中钢集团洛阳耐火材料研究院有限公司 | High-emissivity infrared energy-saving material and preparation method thereof |
| CN111634950A (en) * | 2020-06-28 | 2020-09-08 | 北京理工大学重庆创新中心 | Preparation method of perovskite type high-emissivity spherical agglomerated powder |
| CN111634950B (en) * | 2020-06-28 | 2021-10-22 | 北京理工大学重庆创新中心 | Preparation method of perovskite type high-emissivity spherical agglomerated powder |
| CN111825442A (en) * | 2020-07-21 | 2020-10-27 | 长沙麓桥科技有限公司 | Sr, Ni and Cr co-doped LaAlO3Method for preparing ceramic material and product thereof |
| CN112661510A (en) * | 2021-01-11 | 2021-04-16 | 内蒙古科技大学 | Lanthanum aluminate green ceramic and preparation method and application thereof |
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