CN110229007A - A kind of high emissivity heat insulation coating - Google Patents

A kind of high emissivity heat insulation coating Download PDF

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CN110229007A
CN110229007A CN201910596986.6A CN201910596986A CN110229007A CN 110229007 A CN110229007 A CN 110229007A CN 201910596986 A CN201910596986 A CN 201910596986A CN 110229007 A CN110229007 A CN 110229007A
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parts
high emissivity
coating
heat insulation
insulation coating
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CN110229007B (en
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王刚
王曲
韩建燊
张伟
赵鑫
张琪
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Sinosteel Luoyang Institute of Refractories Research Co Ltd
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Sinosteel Luoyang Institute of Refractories Research Co Ltd
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite

Abstract

The invention belongs to high-temperature energy-conservation coatings arts, and in particular to a kind of high emissivity heat insulation coating.A kind of disclosed high emissivity heat insulation coating has heat preservation transition zone and high emissivity coating；High emissivity coating is located at the outside of heat preservation transition zone；Keep the temperature the raw material composition and parts by weight of transition zone are as follows: 30-45 parts of micropore electric-melting zirconia hollow sphere, 10-25 parts of filler, 10-25 parts of bonding agent, 10-40 parts of solvent, in addition it is additionally added 0.1-0.2 parts of dispersing agent, 0.3-0.5 parts of thickener and 0.05-0.15 parts of defoaming agent；The raw material of high emissivity coating forms and parts by weight are as follows: Me-LaAlO3‑La2Zr2O7‑ZrO230-50 parts of high emissivity ceramic material, bonding agent 15-40,15-50 parts of solvent, additionally incorporate 0.1-0.2 parts of dispersing agent, 0.3-0.5 parts of thickener and 0.05-0.15 parts of defoaming agent.The beneficial effect of the infrared high radiation heat insulation coating of superhigh temperature of the present invention is: high temperature resistant (maximum operation (service) temperature is up to 1800 DEG C), lower thermal conductivity, high radiant rate, coating and Al-Si Refractory Materials are firmly combined strong with coating high-temp stability.

Description

A kind of high emissivity heat insulation coating
Technical field
The present invention relates to high-temperature energy-conservation technical fields, and in particular to a kind of high emissivity heat insulation coating.
Background technique
In recent years, AND ENERGY RESOURCES CONSUMPTION IN CHINA rapid growth makes energy saving situation very severe, using thermal technology's stove as representative, use Account for about the 25%~40% of national energy consumption in the industrial energy consumption of pyroprocess, at the same to statistical data analysis shows, at present I The average thermal efficiency of state's thermal technology's stove equipment is less than 40%, and lower than industrially developed country 10%~20%；Therefore in time layout and Research and development are extremely necessary and significant for the power-saving technology of thermal-energy equipment.In China, Al-Si Refractory Materials (Al2O3/ SiO2, as: alumina fibre brick, mullite fiber module, light weight fireclay brick) it is applying the thermal technology's stove most having a large capacity and a wide range Furnace lining is widely used in the high temperatures typicals such as ceramic kiln equipment.But regrettably, the emissivity ε of Al-Si Refractory Materials is general Only 0.5~0.6, for this realistic problem, the counter-measure built consensus is: applying on the surface of Al-Si Refractory Materials The high emissivity coating of one layer of ε >=0.9 is covered to realize the radiation energy-saving of stove.
So far, in the research and development and application aspect of infra-red radiation energy-saving ceramic coating, Wessex company, the U.S. is international Upper generally acknowledged best-run enterprise, but since its product is with SiB6For main phase, price is caused to remain high for a long time；In addition, English The coating products of the Encoat company of state gas furnace and oil burner it is on probation in, obtain 5% energy-saving efficiency, but due to Using SiC powder as Radiant base material, it is not suitable for thermal technology's stove of high temperature oxidative atmosphere.A kind of patent of invention " infrared energy-conserving paint And application " (number of patent application: being 201510119884.7) using the lanthanum aluminate of perovskite structure as main phase, in the transmitting of near-infrared Rate is up on 0.9, studies have found that with SiO2The increase of content, the LaAlO of doping3Start to decompose, absorptivity and transmitting Rate is with SiO2Content increases and reduces, the application which limits it on Al-Si Refractory Materials.
Therefore, if being able to achieve coating, solid phase reaction does not occur and is had with refractory material matrix for military service coating at high temperature High infrared radiation performance, it is significant to the energy conservation for improving Industrial Stoves.
Summary of the invention
The purpose of the present invention provides a kind of high emissivity heat preservation painting primarily directed to the above deficiencies in the existing technologies Layer.
What the object of the invention was achieved through the following technical solutions:
A kind of high emissivity heat insulation coating, high emissivity heat insulation coating have heat preservation transition zone and high emissivity coating；Described High emissivity coating is located at the outside of heat preservation transition zone；The raw material composition and parts by weight of the heat preservation transition zone are as follows: micropore electricity It is Bubble zirconia 30-45 parts molten, 10-25 parts of filler, 10-25 parts of bonding agent, 10-40 parts of solvent, in addition it is additionally added 0.1-0.2 The dispersing agent, 0.3-0.5 parts of thickener and 0.05-0.15 parts of defoaming agent of part；
The raw material of high emissivity coating forms and parts by weight are as follows: Me-LaAlO3-La2Zr2O7-ZrO2High emissivity ceramic material 30-50 parts, bonding agent 15-40,15-50 parts of solvent, additionally incorporate 0.1-0.2 parts of dispersing agent, 0.3-0.5 parts of thickener and 0.05-0.15 parts of defoaming agent.
The Me-LaAlO3-La2Zr2O7-ZrO2The raw material of high-emissivity material forms and parts by weight are as follows: lanthana 30-55 parts, 10-25 parts of aluminium oxide, 1-20 parts of zirconium oxide, I 1-20 parts of dopant and II 5-20 parts of dopant；Above-mentioned raw materials pass through Me-LaAlO is prepared in high temperature solid state reaction3-La2Zr2O7-ZrO2High-emissivity material；The dopant I be magnesia, One or more mixing of calcium oxide, barium monoxide, strontium oxide strontia, the dopant II be chromium oxide, manganese oxide, iron oxide, One or more mixing of cobalt oxide.
Granularity≤1mm of the micropore electric-melting zirconia hollow sphere.
The filler is one or both of fused white corundum micro mist or plate diamond spar micro mist, the granularity of micro mist≤ 0.088mm。
The bonding agent is one of waterborne polyurethane resin and water-based acrylic resin.
The solvent is deionized water.
The dispersing agent is the polyethylene glycol type diminishing of sodium tripolyphosphate, calgon and BASF Aktiengesellschaft's production One of agent CAMTMENT FS20.
The thickener is carboxymethyl cellulose.
The defoaming agent is the G60 defoaming agent of Sima Chemical Manufacture.
The purpose of the present invention is to provide the heat preservations that one kind can use under superhigh temperature (1800 DEG C of maximum operation (service) temperature) Coating and this coating is by infrared radiation property with higher；High refractive index heat insulation coating of the invention is by heat preservation transition zone (internal layer) It is formed with high emissivity coating (outer layer), it is primary raw material that heat preservation transition zone, which selects electric-melting zirconia hollow sphere, is on the one hand aoxidized Zirconium itself have very high fusing point can guarantee after electric smelting its 1800 DEG C at a temperature of be used for a long time inside do not occur Structure change, the relatively low kiln inner wall surface that applies the coating to of thermal conductivity of zirconia material can be further in another aspect Heat is reduced to lose by furnace wall；High emissivity coating material passes through the Me- with high emissivity of high temperature process heat LaAlO3-La2Zr2O7-ZrO2Ternary eutectic oxide ceramic material provides high infrared emittance for coating；In addition described double The characteristics of coating structure designs is: on the one hand by ZrO2The barrier action of transition zone avoids or slows down outer layer infrared coating With SiO in Al-Si Refractory Materials matrix2Reaction, thus effectively inhibit emissivity decaying；Another aspect internal layer ZrO2Coating ZrSiO can be generated by reacting with Al-Si Refractory Materials body portion4And firm interface cohesion is formed, to avoid coating It cracks and flakes off；Transition zone (ZrO simultaneously2) and infrared coating (Me-LaAlO3/La2Zr2O7/ZrO2) belong to hypoeutectic component, two The high temeperature chemistry compatibility of person is good.Therefore in ZrO2Coating surface adheres to Me-LaAlO3-La2Zr2O7-ZrO2Ternary eutectic pottery Porcelain coating can achieve the effect of long-acting energy-saving.
The beneficial effect of the infrared high radiation heat preservation energy-saving coating of superhigh temperature of the present invention is:
High temperature resistant: the present invention selects electric-melting zirconia hollow sphere and Me-LaAlO resistant to high temperature3-La2Zr2O7-ZrO2Ternary eutectic Oxide is coating material, and the bonding agent of selection is that organic bond is burned off the high temperature resistant that will not influence coating itself in high temperature Performance, the present invention prepared by coating maximum operation (service) temperature up to 1800 DEG C.
It is firmly combined: heat preservation transition zone (ZrO2Coating) it can be by reacting generation with Al-Si Refractory Materials body portion ZrSiO4And firm interface cohesion is formed, to avoid coating cracking and peeling
Lower thermal conductivity and high radiativity: internal layer coating select zirconia material thermal conductivity itself it is relatively low and for hollow sphere therefore Effectively heat can be prevented to transmit outward, and due to Me-LaAlO3-La2Zr2O7-ZrO2The high radiation that has both of material is led with low-heat Performance can allow kiln furnace heat to be effectively utilized.
High stability: internal layer coating based on electric smelting raw material can guarantee coating be used for a long time at high temperature not recurring structure and Performance change, and lanthanum aluminate and zirconic acid lanthanum also have high structural stability at high temperature.
Specific embodiment
The present invention is illustrated in conjunction with the embodiment provided:
Embodiment 1: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric-melting zirconia 45 parts of hollow sphere, 15 parts of fused white corundum micro mist, 20 parts of waterborne polyurethane resin, 20 parts of deionized water, additionally incorporate 0.1 part The G60 defoaming agent of sodium tripolyphosphate dispersing agent, 0.5 part of carboxymethyl cellulose thickener and 0.05 part of Sima Chemical Manufacture； High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2Material (30 parts of lanthana, oxidation 25 parts of aluminium, 20 parts of zirconium oxide, 5 parts of calcium oxide, 20 parts of chromium oxide) 50 parts, 25 parts of waterborne polyurethane resin, 25 parts of deionized water, It is raw to additionally incorporate 0.1 part of sodium tripolyphosphate dispersing agent, 0.5 part of carboxymethyl cellulose thickener and 0.05 part of Si Mahuagong The G60 defoaming agent of production.
Embodiment 2: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen Change 45 parts of zirconium hollow sphere, 10 parts of plate diamond spar micro mist, 25 parts of water-based acrylic resin, 20 parts of deionized water, additionally incorporates 0.2 part Calgon dispersing agent dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.15 part of Sima Chemical Manufacture G60 Defoaming agent；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2Material (lanthana 35 Part, 15 parts of aluminium oxide, 20 parts of zirconium oxide, 5 parts of barium monoxide, 5 parts of magnesia, 10 parts of iron oxide, 10 parts of nickel oxide) 50 parts, it is aqueous 15 parts of acrylic resin, 35 parts of deionized water, additionally incorporate 0.1 part of sodium tripolyphosphate dispersing agent, 0.3 part of carboxymethyl cellulose The G60 defoaming agent of plain thickener and 0.05 part of Sima Chemical Manufacture.
Embodiment 3: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen Change 40 parts of zirconium hollow sphere, 25 parts of fused white corundum micro mist, 10 parts of waterborne polyurethane resin, 25 parts of deionized water, additionally incorporates 0.2 Part CAMTMENT FS20 dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.15 part of Sima Chemical Manufacture G60 Defoaming agent；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2Material (lanthana 55 Part, 25 parts of aluminium oxide, 10 parts of zirconium oxide, 1 part of magnesia, 4 parts of chromium oxide, 5 parts of nickel oxide) 45 parts, waterborne polyurethane resin 25 Part, 30 parts of deionized water, additionally incorporate 0.2 part CAMTMENT FS20 dispersing agent, 0.5 part of carboxymethyl cellulose thickener With the G60 defoaming agent of 0.15 part of Sima Chemical Manufacture.
Embodiment 4: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen Change 30 parts of zirconium hollow sphere, 20 parts of fused white corundum micro mist, 10 parts of waterborne polyurethane resin, 40 parts of deionized water, additionally incorporates 0.1 Part CAMTMENT FS20 dispersing agent, 0.5 part of carboxymethyl cellulose thickener and 0.05 part of Sima Chemical Manufacture G60 Defoaming agent；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2Material (lanthana 45 Part, 20 parts of aluminium oxide, 20 parts of zirconium oxide, 1 part of strontium oxide strontia, 1 part of iron oxide, 13 parts of nickel oxide) 50 parts, waterborne polyurethane resin 35 Part, 15 parts of deionized water, additionally incorporate 0.1 part CAMTMENT FS20 dispersing agent, 0.5 part of carboxymethyl cellulose thickener With the G60 defoaming agent of 0.1 part of Sima Chemical Manufacture.
Embodiment 5: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen 35 parts of zirconium hollow sphere of change, 5 parts of fused white corundum micro mist, 10 parts of plate diamond spar micro mist, 25 parts of waterborne polyurethane resin, deionized water 25 parts, additionally incorporate 0.2 part of sodium tripolyphosphate dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.15 part of Sima The G60 defoaming agent of Chemical Manufacture；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2 Material (40 parts of lanthana, 20 parts of aluminium oxide, 10 parts of zirconium oxide, 5 parts of strontium oxide strontia, 5 parts of calcium oxide, 5 parts of barium monoxide, magnesia 5 Part, 10 parts of cobalt oxide) 30 parts, 40 parts of waterborne polyurethane resin, 30 parts of deionized water, additionally incorporate 0.1 part of sodium tripolyphosphate The G60 defoaming agent of dispersing agent, 0.5 part of carboxymethyl cellulose thickener and 0.05 part of Sima Chemical Manufacture.
Embodiment 6: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen 45 parts of zirconium hollow sphere of change, 10 parts of fused white corundum micro mist, 10 parts of plate diamond spar micro mist, 25 parts of water-based acrylic resin, deionization 100 parts of water, additionally incorporate 0.2 part of CAMTMENT FS20 dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.15 part Sima Chemical Manufacture G60 defoaming agent；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3- La2Zr2O7-ZrO2Material (49 parts of lanthana, 20 parts of aluminium oxide, 10 parts of zirconium oxide, 1 part of calcium oxide, 5 parts of chromium oxide, iron oxide 5 Part, 5 parts of cobalt oxide, 5 parts of nickel oxide) 35 parts, 15 parts of waterborne polyurethane resin, 50 parts of deionized water, additionally incorporate the three of 0.2 part The G60 defoaming agent of polyphosphate sodium dispersing agent, 0.5 part of carboxymethyl cellulose thickener and 0.05 part of Sima Chemical Manufacture.
Embodiment 7: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen 35 parts of zirconium hollow sphere of change, 8 parts of fused white corundum micro mist, 12 parts of plate diamond spar micro mist, 20 parts of waterborne polyurethane resin, deionized water 25 parts, additionally incorporate 0.2 part of sodium tripolyphosphate dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.15 part of Sima The G60 defoaming agent of Chemical Manufacture；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2 Material (40 parts of lanthana, 20 parts of aluminium oxide, 20 parts of zirconium oxide, 5 parts of strontium oxide strontia, 5 parts of calcium oxide, 5 parts of barium monoxide, cobalt oxide 5 Part) 40 parts, 20 parts of waterborne polyurethane resin, 40 parts of deionized water, additionally incorporate 0.1 part sodium tripolyphosphate dispersing agent, 0.4 part Carboxymethyl cellulose thickener and 0.05 part of Sima Chemical Manufacture G60 defoaming agent.
Embodiment 8: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen Change 40 parts of zirconium hollow sphere, 15 parts of plate diamond spar micro mist, 20 parts of waterborne polyurethane resin, 25 parts of deionized water, additionally incorporates 0.2 part CAMTMENT FS20 dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.1 part of Sima Chemical Manufacture G60 defoaming Agent；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7-ZrO2Material (50 parts of lanthana, 10 parts of aluminium oxide, 20 parts of zirconium oxide, 5 parts of barium monoxide, 5 parts of iron oxide, 5 parts of nickel oxide, 5 parts of cobalt oxide) 40 parts, aqueous polyurethane 25 parts of resin, 35 parts of deionized water, additionally incorporate 0.1 part of sodium tripolyphosphate dispersing agent, the thickening of 0.5 part of carboxymethyl cellulose The G60 defoaming agent of agent and 0.15 part of Sima Chemical Manufacture.
Embodiment 9: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen 45 parts of zirconium hollow sphere of change, 9 parts of plate diamond spar micro mist, 6 parts of fused white corundum micro mist, 15 parts of waterborne polyurethane resin, deionized water 25 parts, additionally incorporate 0.2 part of CAMTMENT FS20 dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.1 part of department The G60 defoaming agent of horse Chemical Manufacture；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7- ZrO2Material (55 parts of lanthana, 15 parts of aluminium oxide, 10 parts of zirconium oxide, 5 parts of barium monoxide, 5 parts of iron oxide, 5 parts of nickel oxide, oxidation 5 parts of cobalt) 45 parts, 30 parts of waterborne polyurethane resin, 25 parts of deionized water, additionally incorporate 0.1 part sodium tripolyphosphate dispersing agent, The G60 defoaming agent of 0.4 part of carboxymethyl cellulose thickener and 0.12 part of Sima Chemical Manufacture.
Embodiment 10: a kind of high emissivity heat insulation coating, heat preservation transition zone are grouped as by the group of following parts by weight: electric smelting oxygen 40 parts of zirconium hollow sphere of change, 15 parts of plate diamond spar micro mist, 10 parts of fused white corundum micro mist, 10 parts of waterborne polyurethane resin, deionization 25 parts of water, additionally incorporate 0.2 part of CAMTMENT FS20 dispersing agent, 0.3 part of carboxymethyl cellulose thickener and 0.1 part The G60 defoaming agent of Sima Chemical Manufacture；High emissivity coating is grouped as by the group of following parts by weight: Me-LaAlO3-La2Zr2O7- ZrO2Material (55 parts of lanthana, 15 parts of aluminium oxide, 10 parts of zirconium oxide, 1 part of barium monoxide, 5 parts of iron oxide, 5 parts of nickel oxide, oxidation 5 parts of cobalt, 4 parts of chromium oxide) 40 parts, 30 parts of waterborne polyurethane resin, 30 parts of deionized water, additionally incorporate 0.2 part of tripolyphosphate The G60 defoaming agent of sodium dispersing agent, 0.5 part of carboxymethyl cellulose thickener and 0.12 part of Sima Chemical Manufacture.

Claims (9)

1. a kind of high emissivity heat insulation coating, it is characterised in that: high emissivity heat insulation coating has heat preservation transition zone and high emission Rate coating；The high emissivity coating is located at the outside of heat preservation transition zone；The raw material composition of the described heat preservation transition zone and again Measure part are as follows: 30-45 parts of micropore electric-melting zirconia hollow sphere, 10-25 parts of filler, 10-25 parts of bonding agent, 10-40 parts of solvent, in addition It is additionally added 0.1-0.2 parts of dispersing agent, 0.3-0.5 parts of thickener and 0.05-0.15 parts of defoaming agent；
The raw material of high emissivity coating forms and parts by weight are as follows: Me-LaAlO3-La2Zr2O7-ZrO2High emissivity ceramic material 30- 50 parts, bonding agent 15-40,15-50 parts of solvent, additionally incorporate 0.1-0.2 parts of dispersing agent, 0.3-0.5 parts of thickener and 0.05-0.15 parts of defoaming agent.
2. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the Me-LaAlO3- La2Zr2O7-ZrO2The raw material of high-emissivity material forms and parts by weight are as follows: 30-55 parts of lanthana, 10-25 parts of aluminium oxide, oxidation 1-20 parts of zirconium, I 1-20 parts of dopant and II 1-20 parts of dopant；Me- is prepared by high temperature solid state reaction in above-mentioned raw materials LaAlO3-La2Zr2O7-ZrO2High-emissivity material；The dopant I be magnesia, calcium oxide, barium monoxide, strontium oxide strontia one Kind or a variety of mixing, the dopant II are one or more mixing of chromium oxide, manganese oxide, iron oxide, cobalt oxide.
3. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the micropore electric-melting zirconia is hollow Granularity≤1mm of ball.
4. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the filler is fused white corundum One or both of micro mist or plate diamond spar micro mist, the granularity of micro mist≤0.088mm.
5. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the bonding agent is aqueous polyurethane One of resin and water-based acrylic resin.
6. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the solvent is deionized water.
7. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the dispersing agent is tripolyphosphate One of sodium, calgon and polyethylene glycol type water-reducing agent CAMTMENT FS20 of BASF Aktiengesellschaft's production.
8. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the thickener is carboxymethyl cellulose Element.
9. a kind of high emissivity heat insulation coating as described in claim 1, it is characterised in that: the defoaming agent is raw for Si Mahuagong The G60 defoaming agent of production.
CN201910596986.6A 2019-07-04 2019-07-04 High-emissivity heat-insulating coating Active CN110229007B (en)

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