WO2019090811A1 - 一种耐高温红外辐射节能涂料及其制备方法 - Google Patents

一种耐高温红外辐射节能涂料及其制备方法 Download PDF

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WO2019090811A1
WO2019090811A1 PCT/CN2017/111983 CN2017111983W WO2019090811A1 WO 2019090811 A1 WO2019090811 A1 WO 2019090811A1 CN 2017111983 W CN2017111983 W CN 2017111983W WO 2019090811 A1 WO2019090811 A1 WO 2019090811A1
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infrared radiation
radiation energy
temperature resistant
resistant infrared
high temperature
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杨定宽
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苏州锐特捷化工制品有限公司
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/16—Halogen-containing compounds
    • C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K2003/2262—Oxides; Hydroxides of metals of manganese
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • C08K3/22—Oxides; Hydroxides of metals
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    • C08K2003/2272—Ferric oxide (Fe2O3)
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2289—Oxides; Hydroxides of metals of cobalt
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Definitions

  • the invention relates to the field of chemical coatings, in particular to a high temperature resistant infrared radiation energy-saving coating and a preparation method thereof.
  • High-temperature infrared radiation energy-saving coatings as a new energy-saving material on thermal processing equipment such as industrial furnaces, can not only achieve the effect of reducing fuel costs, but also provide good protection for furnace lining materials, prolong the service life of industrial furnaces, and reduce furnaces. Maintenance workload, therefore, has been widely used in high temperature furnaces.
  • the existing coatings have the following disadvantages: 1. high cost; 2, complicated preparation process; 3, poor thermal shock resistance, poor matching between radiation effect and energy saving effect.
  • the technical problem mainly solved by the invention is to provide a high temperature resistant infrared radiation energy-saving coating and a preparation method thereof, which can effectively solve the above problems.
  • a technical solution adopted by the present invention is to provide a high temperature resistant infrared radiation energy-saving coating, comprising the following components: 60-80 parts of functional filler, 3-5 parts of functional auxiliary, 50 ⁇ bond emulsion 50 ⁇ 100 parts; wherein the functional filler comprises SiO 2 , MnO 2 , Fe 2 O 3 , Co 2 O 3 , CaCO 3 , B 6 Si and CaF 2 .
  • the mass ratio of the SiO 2 , MnO 2 , Fe 2 O 3 , Co 2 O 3 , CaCO 3 , B 6 Si and CaF 2 is 3 to 5:5 to 8:4. ⁇ 6:2 ⁇ 3:1 ⁇ 3:1 ⁇ 1.5:0.5 ⁇ 1.5.
  • the functional adjuvant comprises at least one of a dispersant, a thickener, and an antioxidant.
  • the bond emulsion comprises a sol, a nanofiller and an aqueous acrylic emulsion in a mass ratio of from 10 to 15:3 to 5:1 to 5.
  • the sol comprises a silica sol, an aluminum sol and a zirconium sol mixed in any ratio.
  • the nanofiller comprises nano titanium dioxide and nano silicon dioxide in a mass ratio of 2 to 3:3 to 5.
  • another technical solution adopted by the present invention is to provide a method for preparing a high temperature resistant infrared radiation energy-saving coating, comprising the following steps:
  • the functional filler which is press-formed in the step (1) is sintered in a sintering furnace to obtain a solid solution, and then cooled at room temperature;
  • the solid solution cooled in the step (2) is pulverized into a powder having a certain particle diameter, and then stirred and mixed with a formula amount of the functional auxiliary agent and the binding emulsion;
  • the mixture obtained in the step (3) is ball milled and then vacuum dried to a viscosity of 1/3 to 1/2 of the viscosity of the mixture in the step (3), that is, the resistance High-temperature infrared radiation energy-saving coatings.
  • the particle size is 50-500 ⁇ m; In the step (3), the particle diameter is 5 to 50 ⁇ m.
  • the sintering process conditions are: a temperature of 1500 to 1800 ° C, and a time of 1 to 1.5 h.
  • the ball milling time is 1 to 3 hours
  • the vacuum drying conditions are: a vacuum degree of 0.5 to 0.8 MPa, and a temperature of 70 to 85 °C.
  • the invention has the beneficial effects that the invention relates to a high-temperature resistant infrared radiation energy-saving coating, which is prepared by scientific formula design, especially the material selection design of the functional filler, combined with the first mixing and pressing, then sintering into a solid solution, and finally the bonding and mixing preparation method.
  • a high-temperature resistant infrared radiation energy-saving coating which is prepared by scientific formula design, especially the material selection design of the functional filler, combined with the first mixing and pressing, then sintering into a solid solution, and finally the bonding and mixing preparation method.
  • the thermal shock resistance of the coating is improved, and on the other hand, the radiation effect between the coating and the energy-saving effect are achieved to achieve high efficiency matching, and the energy-saving effect is achieved.
  • the invention relates to a high temperature resistant infrared radiation energy-saving coating, comprising the following components: 60 parts of functional filler, 3 parts of functional auxiliary agent and 50 parts of bonding emulsion; wherein the functional filler comprises a mass ratio of 3:5:4:2:1. ⁇ 3:1:0.5 of SiO 2 , MnO 2 , Fe 2 O 3 , Co 2 O 3 , CaCO 3 , B 6 Si and CaF 2 .
  • the functional adjuvant includes at least one of a dispersant, a thickener, and an antioxidant.
  • the bond emulsion includes a sol, a nanofiller, and an aqueous acrylic emulsion in a mass ratio of 10:3:1.
  • the sol comprises a silica sol, an aluminum sol and a zirconium sol mixed in any ratio.
  • the nanofiller includes nano titanium dioxide and nano silicon dioxide in a mass ratio of 2:3.
  • the preparation method of the above high temperature resistant infrared radiation energy-saving coating comprises the following steps:
  • the solid solution cooled in the step (2) is pulverized into a powder having a particle diameter of 5 to 50 ⁇ m, and then stirred and mixed with a formula amount of the functional auxiliary agent and the binding emulsion;
  • the mixture obtained in the step (3) is ball milled for 1 to 3 hours to be mixed, and then vacuum dried to a viscosity of 0.5 to 0.8 MPa at a temperature of 70 to 85 ° C.
  • the 1/3 of the viscosity of the initial mixture in the step (3) is the high temperature infrared radiation energy-saving paint.
  • the invention relates to a high temperature resistant infrared radiation energy-saving coating, comprising the following components: 80 parts of functional filler, 5 parts of functional auxiliary agent, 100 parts of bonding emulsion; wherein the functional filler comprises mass ratio of 5:8:6:3:3 : 1.5: 1.5 of SiO 2 , MnO 2 , Fe 2 O 3 , Co 2 O 3 , CaCO 3 , B 6 Si and CaF 2 .
  • the functional adjuvant includes at least one of a dispersant, a thickener, and an antioxidant.
  • the bond emulsion comprises a sol, a nanofiller and an aqueous acrylic emulsion in a mass ratio of 15:5:5.
  • the sol comprises a silica sol, an aluminum sol and a zirconium sol mixed in any ratio.
  • the nanofiller includes nano titanium dioxide and nano silicon dioxide in a mass ratio of 3:5.
  • the preparation method of the above high temperature resistant infrared radiation energy-saving coating comprises the following steps:
  • the solid solution cooled in the step (2) is pulverized into a powder having a particle diameter of 5 to 50 ⁇ m, and then stirred and mixed with a formula amount of the functional auxiliary agent and the binding emulsion;
  • step (3) Ball milling and drying: the mixture obtained in the step (3) is ball milled for 1 to 3 hours to be mixed, and then vacuum dried to a viscosity of 0.5 to 0.8 MPa at a temperature of 70 to 85 ° C.
  • the viscosity of the initial mixture in step (3) is 1/2, which is the high temperature infrared radiation energy-saving coating.
  • the above coating is coated on the outer surface of the boiler water wall tube of material 20# steel with a thickness of 80-100 ⁇ m, naturally dried for 24 hours, placed in a muffle furnace, heated to 800 ° C and kept for 30 minutes, and then the boiler is put into use.
  • energy consumption can be saved by more than 35% under the same conditions.
  • the coating is repeatedly sintered more than 30 times under the above conditions, the coating performance remains stable; the thermal shock resistance of the coating is good, and the matching between the radiation effect and the energy saving effect is good, and the effect of high efficiency and energy saving can be achieved.

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  • Engineering & Computer Science (AREA)
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Abstract

本发明公开了一种耐高温红外辐射节能涂料及其制备方法，包括如下组分：功能填料60～80份、功能助剂3～5份、粘结乳液50～100份；其中，所述功能填料包括SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2。本发明一种耐高温红外辐射节能涂料，通过科学的配方设计，尤其是功能填料的选材设计，结合先混合压制，再烧结成固溶体，最后粘结混合的制备方法，一方面提高了涂料的耐热震稳定性好，另一方面使得涂层的辐射效果与节能效果之间达到高效匹配性，实现高效节能效果。

Description

一种耐高温红外辐射节能涂料及其制备方法 技术领域
本发明涉及化工涂料领域，特别是涉及一种耐高温红外辐射节能涂料及其制备方法。
背景技术
高温红外辐射节能涂料作为工业炉等热加工设备上的一种节能新材料，不仅可以获得降低燃料成本的效果，而且能对炉衬材料起到良好的保护作用，延长工业炉使用寿命，减轻窑炉维护工作量，因此，在高温窑炉内获得了广泛的应用。
但现有涂料存在如下缺点：1.成本高；2、制备工艺复杂；3、耐热震稳定性差，辐射效果与节能效果之间的匹配性差。
发明内容
本发明主要解决的技术问题是提供一种耐高温红外辐射节能涂料及其制备方法，能够有效解决上述问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种耐高温红外辐射节能涂料，包括如下组分：功能填料60～80份、功能助剂3～5份、粘结乳液50～100份；其中，所述功能填料包括SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2。
在本发明一个较佳实施例中，所述SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2的质量比为3～5：5～8:4～6:2～3:1～3:1～1.5:0.5～1.5。
在本发明一个较佳实施例中，所述功能助剂包括分散剂、增稠剂、抗氧化剂中的至少一种。
在本发明一个较佳实施例中，所述粘结乳液包括质量比为10～15:3～5:1～5的溶胶、纳米填料和水性丙烯酸乳液。
在本发明一个较佳实施例中，所述溶胶包括以任意比例混合的硅溶胶、铝溶胶和锆溶胶。
在本发明一个较佳实施例中，所述纳米填料包括质量比为2～3:3～5的纳米二氧化钛和纳米二氧化硅。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种耐高温红外辐射节能涂料的制备方法，包括如下步骤：
(1)混合压制：将所述配方量的功能填料称量后，先置于球磨机中研磨至一定粒径，再用压制机压制成型；
(2)烧结：将步骤(1)中压制成型的功能填料置于烧结炉中烧结得到固溶体，再室温冷却；
(3)研磨混合：将步骤(2)中冷却后的固溶体粉碎成一定粒径的粉体，然后与配方量的功能助剂和粘结乳液搅拌混匀；
(4)球磨并干燥：将步骤(3)中得到的混合物料球磨混匀，然后再真空干燥至粘度为步骤(3)中混合物料粘度的1/3～1/2，即为所述耐高温红外辐射节能涂料。
在本发明一个较佳实施例中，所述步骤(1)中，所述粒径为50～500μm； 所述步骤(3)中，所述粒径为5～50μm。
在本发明一个较佳实施例中，所述步骤(2)中，所述烧结的工艺条件为：温度1500～1800℃，时间为1～1.5h。
在本发明一个较佳实施例中，所述步骤(4)中，所述球磨的时间为1～3h，所述真空干燥的条件为：真空度0.5～0.8MPa，温度70～85℃。
本发明的有益效果是：本发明一种耐高温红外辐射节能涂料，通过科学的配方设计，尤其是功能填料的选材设计，结合先混合压制，再烧结成固溶体，最后粘结混合的制备方法，一方面提高了涂料的耐热震稳定性好，另一方面使得涂层的辐射效果与节能效果之间达到高效匹配性，实现高效节能效果。
具体实施方式
下面对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
本发明实施例包括：
实施例1
一种耐高温红外辐射节能涂料，包括如下组分：功能填料60份、功能助剂3份、粘结乳液50份；其中，所述功能填料包括质量比为3：5:4:2:1～3:1:0.5的SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2。
所述功能助剂包括分散剂、增稠剂、抗氧化剂中的至少一种。
所述粘结乳液包括质量比为10:3:1的溶胶、纳米填料和水性丙烯酸乳液。其中，所述溶胶包括以任意比例混合的硅溶胶、铝溶胶和锆溶胶。所述纳米填料包括质量比为2:3的纳米二氧化钛和纳米二氧化硅。
上述耐高温红外辐射节能涂料的制备方法，包括如下步骤：
(1)混合压制：将所述配方量的功能填料称量后，先置于球磨机中研磨至粒径为50～500μm，再用压制机压制成型；
(2)烧结：将步骤(1)中压制成型的功能填料置于烧结炉中，在温度为1500℃的条件下，烧结1.5h得到固溶体，再室温冷却；
(3)研磨混合：将步骤(2)中冷却后的固溶体粉碎成粒径为5～50μm的粉体，然后与配方量的功能助剂和粘结乳液搅拌混匀；
(4)球磨并干燥：将步骤(3)中得到的混合物料球磨1～3h至混匀，然后再在真空度为0.5～0.8MPa，温度为70～85℃的条件下真空干燥至粘度为步骤(3)中初始混合物料粘度的1/3，即为所述耐高温红外辐射节能涂料。
实施例2
一种耐高温红外辐射节能涂料，包括如下组分：功能填料80份、功能助剂5份、粘结乳液100份；其中，所述功能填料包括质量比为5：8:6:3:3:1.5:1.5的SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2。
所述功能助剂包括分散剂、增稠剂、抗氧化剂中的至少一种。
所述粘结乳液包括质量比为15:5:5的溶胶、纳米填料和水性丙烯酸乳液。其中，所述溶胶包括以任意比例混合的硅溶胶、铝溶胶和锆溶胶。所述纳米填料包括质量比为3:5的纳米二氧化钛和纳米二氧化硅。
上述耐高温红外辐射节能涂料的制备方法，包括如下步骤：
(1)混合压制：将所述配方量的功能填料称量后，先置于球磨机中研磨至粒径为50～500μm，再用压制机压制成型；
(2)烧结：将步骤(1)中压制成型的功能填料置于烧结炉中，在温度为1800℃的条件下，烧结1h得到固溶体，再室温冷却；
(3)研磨混合：将步骤(2)中冷却后的固溶体粉碎成粒径为5～50μm的粉体，然后与配方量的功能助剂和粘结乳液搅拌混匀；
(4)球磨并干燥：将步骤(3)中得到的混合物料球磨1～3h至混匀，然后再在真空度为0.5～0.8MPa，温度为70～85℃的条件下真空干燥至粘度为步骤(3)中初始混合物料粘度的1/2，即为所述耐高温红外辐射节能涂料。
将上述涂料在材质为20#钢的锅炉水冷壁管外表面涂覆厚度为80～100μm的涂层，自然干燥24h后放入马弗炉，升温至800℃并保温30min，然后将锅炉投入使用，与涂覆相同厚度的现有涂料相比，相同条件下可节约能耗35％以上。且该涂层经上述条件反复烧结30次以上，涂层性能保持稳定；涂层的耐热震稳定性好，其辐射效果与节能效果之间的匹配性好，可以达到高效节能的功效。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种耐高温红外辐射节能涂料，其特征在于，包括如下组分：功能填料60～80份、功能助剂3～5份、粘结乳液50～100份；其中，所述功能填料包括SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2。
  2. 根据权利要求1所述的耐高温红外辐射节能涂料，其特征在于，所述SiO2、MnO2、Fe2O3、Co2O3、CaCO3、B6Si和CaF2的质量比为3～5：5～8:4～6:2～3:1～3:1～1.5:0.5～1.5。
  3. 根据权利要求1所述的耐高温红外辐射节能涂料，其特征在于，所述功能助剂包括分散剂、增稠剂、抗氧化剂中的至少一种。
  4. 根据权利要求1所述的耐高温红外辐射节能涂料，其特征在于，所述粘结乳液包括质量比为10～15:3～5:1～5的溶胶、纳米填料和水性丙烯酸乳液。
  5. 根据权利要求4所述的耐高温红外辐射节能涂料，其特征在于，所述溶胶包括以任意比例混合的硅溶胶、铝溶胶和锆溶胶。
  6. 根据权利要求4所述的耐高温红外辐射节能涂料，其特征在于，所述纳米填料包括质量比为2～3:3～5的纳米二氧化钛和纳米二氧化硅。
  7. 一种如权利要求1-6任一项所述的耐高温红外辐射节能涂料的制备方法，其特征在于，包括如下步骤：
    (1)混合压制：将所述配方量的功能填料称量后，先置于球磨机中研磨至一定粒径，再用压制机压制成型；
    (2)烧结：将步骤(1)中压制成型的功能填料置于烧结炉中烧结得到固溶体，再室温冷却；
    (3)研磨混合：将步骤(2)中冷却后的固溶体粉碎成一定粒径的粉体，然后与配方量的功能助剂和粘结乳液搅拌混匀；
    (4)球磨并干燥：将步骤(3)中得到的混合物料球磨混匀，然后再真空干燥至粘度为步骤(3)中混合物料粘度的1/3～1/2，即为所述耐高温红外辐射节能涂料。
  8. 根据权利要求7所述的耐高温红外辐射节能涂料的制备方法，其特征在于，所述步骤(1)中，所述粒径为50～500μm；所述步骤(3)中，所述粒径为5～50μm。
  9. 根据权利要求7所述的耐高温红外辐射节能涂料的制备方法，其特征在于，所述步骤(2)中，所述烧结的工艺条件为：温度1500～1800℃，时间为1～1.5h。
  10. 根据权利要求7所述的耐高温红外辐射节能涂料的制备方法，其特征在于，所述步骤(4)中，所述球磨的时间为1～3h，所述真空干燥的条件为：真空度0.5～0.8MPa，温度70～85℃。
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