CN113604079B - Thermochemical protective coating material and preparation method thereof - Google Patents
Thermochemical protective coating material and preparation method thereof Download PDFInfo
- Publication number
- CN113604079B CN113604079B CN202110600828.0A CN202110600828A CN113604079B CN 113604079 B CN113604079 B CN 113604079B CN 202110600828 A CN202110600828 A CN 202110600828A CN 113604079 B CN113604079 B CN 113604079B
- Authority
- CN
- China
- Prior art keywords
- thermochemical
- protective coating
- coating material
- metal oxide
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention provides a thermochemical protective coating material, which comprises ABO 3 Perovskite materials or lithium-doped ternary complex metal oxides, ABO 3 The A site of the perovskite material is any two or more of La, ca, ba, sr and K, and/or ABO 3 The B site of the perovskite material is a combination of any two or three of Mn, fe and Co. The thermochemical protective coating material can change the molar ratio of the composite metal oxide according to different requirements to regulate and control the reaction temperature, so that the defect of narrow temperature interval of a single metal oxide heat storage material can be overcome, the thermochemical protective coating material is sprayed on the surface of the heat absorber by a spraying method, the heat resistance of the heat absorber can be improved, and the service life of the heat absorber is prolonged.
Description
Technical Field
The invention relates to the technical field of thermochemical heat storage, in particular to a thermochemical protective coating material and a preparation method thereof.
Background
Currently, solar power generation technology is an effective means to mitigate energy crisis, environmental degradation, and reduce carbon emissions. The solar power generation technology mainly comprises photovoltaic power generation and solar thermal power generation, the solar thermal power generation can be used for peak clipping and valley filling through low-cost heat storage, stable power generation is guaranteed, and the solar thermal power generation system has the potential of serving as a basic power load or a peak shaving unit. The solar thermal power generation technology utilizes a large-scale array parabolic or dish-shaped mirror surface to collect solar thermal energy, provides steam through a heat exchange device, and combines the process of a traditional turbonator, thereby achieving the purpose of power generation.
A large number of heat absorbers and heat exchange pipelines exist in the solar thermal power generation system, and the working environment is severe. The metal surface can be damaged due to oxidation after being exposed to the external environment for a long time, and the temperature difference between the inside and the outside of the heat exchanger is large, so that more environmental heat loss is caused. Meanwhile, the working state is influenced by environmental change, solar radiation is an energy source of the system, thermal shock and thermal fatigue are generated due to frequent fluctuation of the solar radiation, and the stable operation and the service life of the heat absorber are seriously influenced. Especially when strong wind weather occurs, the convection heat dissipation outside the heat absorber is enhanced, and the exposed heat absorbing pipe can be physically damaged by strong wind. Therefore, severe weather changes can cause the efficiency of the heat absorber to be reduced, the service life of the heat absorber to be shortened, even damage occurs, and safety accidents are caused.
In contrast, for example, in CN 108302796A, a chemical energy storage device is additionally provided to perform deep peak shaving, so as to avoid the local temperature of the heat absorber from being too high, and prolong the service life of the heat absorber; for example, CN 105716297B and CN 111981710A have an insulating layer on the outer wall of the heat absorber to reduce the heat loss of the heat absorber, reduce the temperature impact of the heat absorber, and enhance the adaptability of the heat absorber to weather changes.
However, the above method can only alleviate the problem of harsh environment of the heat absorber and the heat exchange pipeline from the external conditions to a certain extent, but cannot improve the heat resistance and the heat storage capacity of the heat absorber and the heat exchanger. In order to improve the power generation efficiency of the solar power generation system, a higher concentration ratio is required. And the heat resistance and the heat storage capacity of the heat absorber are enhanced, so that the temperature of the heat absorber under high condensation ratio is improved, and the stable and safe operation of the system is maintained.
Disclosure of Invention
The invention aims to disclose a thermochemical protective coating material and a preparation method thereof, which can protect a heat absorber and reduce thermal shock, and can improve the working stability of a system by utilizing the heat storage capacity of the thermochemical protective coating material, so that the power generation efficiency is improved.
The invention provides a thermochemical protective coating material, which comprises ABO 3 Perovskite material or lithium-doped ternary complex metal oxide, wherein ABO 3 The A site of the perovskite material is any two or more of La, ca, ba, sr and K, and/or the ABO 3 The B site of the perovskite material is a combination of any two or three of Mn, fe and Co.
Specifically, the thermochemical protective coating material provided by the invention comprises ABO suitable for medium-high temperature heat storage 3 Perovskite materials or lithium doped ternary complex metal oxides. By altering ABO 3 The reaction temperature of the composite metal oxide can be adjusted by the proportion of the doping elements at the A site or the B site of the perovskite material and the molar ratio of each element in the ternary composite metal oxide, so that the addition proportion can be flexibly selected as required to obtain a specific reaction temperature. The thermochemical protective coating material with the thermochemical heat storage capacity can improve the thermal shock of the protective inner layer material, and the working stability of the system is improved by utilizing the heat storage capacity of the thermochemical protective coating material. Preferably, the ternary composite metal oxide is manganese-iron-lithium ternary composite metal oxide, cobalt-copper-lithium ternary composite metal oxide or copper-aluminum-lithium ternary composite metal oxide.
According to the technical scheme, the reaction temperature is changed by changing the mole ratio of three elements of manganese, iron and lithium, cobalt, copper and lithium or copper, aluminum and lithium.
Preferably, the thermochemical protective coating material also comprises silicon carbide.
According to the technical scheme, a proper amount of silicon carbide is added into the thermochemical coating material, so that the thermal conductivity of the coating can be improved, and the heat dissipation loss is reduced.
Preferably, the thermochemical protective coating material further comprises an organic polymer of the polysilazane type.
According to the technical scheme, ceramic precursors such as polysilazane organic polymers and the like are added into the thermochemical coating material, ceramic transformation can be realized in the heat treatment process, and the prepared ceramic coating has high hardness, excellent superhydrophobicity and corrosion resistance.
Preferably, the thermochemical protective coating is a coating formed by spraying thermochemical protective coating material.
According to the technical scheme, the thermochemical protective material is coated on the surface of the heat absorber by a spraying method, so that a coating film with excellent performance can be obtained, the absorption efficiency, the friction resistance and the impact resistance of the heat absorber can be improved, and the service life of the heat absorber is prolonged.
Preferably, the thermochemical protective coating also comprises a black chromium layer.
According to the technical scheme, the black chromium layer is plated on the pretreated workpiece, so that the radiation absorptivity of the coating can be improved, the emissivity is reduced, and the solar energy utilization rate is improved.
Preferably, the thermochemical protective coating is a microporous membrane having a thickness of 50 to 80 μm.
According to the technical scheme, the microporous membrane can increase the contact area of the protective material and gas, and improve the reaction activity of the thermochemical protective coating material.
Preferably, the working temperature range of the thermochemical protective coating is 500 to 900 ℃.
According to the technical scheme, the reaction temperature range of the obtained thermochemical protective coating material is from 500 ℃ to 900 ℃ by changing the element types and the occupied proportions of the composite metal oxide.
Preferably, the thermochemical protective coating is formed by spraying with an electrostatic powder spraying system.
According to the technical scheme, the coefficient of the thermochemical coating material and the air can be set through the control system of the electrostatic powder spraying system, and the powder outlet amount and the atomization state of the thermochemical protective material are changed, so that different film spraying thicknesses are realized, and the requirements of different products are met.
The invention also provides a preparation method of the thermochemical protective coating material, which comprises the following steps:
mixing nitrate, citric acid and glycol according to a certain proportion, heating and stirring until gel is formed;
step two, drying the gel formed in the step one at the temperature of 180-220 ℃ to obtain a sample;
step three, calcining the sample in the step two in an environment of 300-500 ℃, and then carrying out high-temperature heat treatment in an environment of 800-1000 ℃;
and step four, taking out the sample calcined in the step three, and grinding the sample into powder to obtain the thermochemical protective coating material.
According to the technical scheme, the thermochemical protective coating material prepared by the method can be obtained, has a micron-sized porous structure, can increase the contact area of the heat storage material and gas, and improves the reactivity of the composite metal oxide thermochemical energy storage material.
The composite metal oxide thermochemical protective coating material is suitable for thermochemical protection of the surface of a heat absorber of medium-high temperature solar thermal power generation. The thermochemical protective coating material can overcome the defect of narrow temperature interval of a single metal oxide heat storage material, and the molar ratio of the composite metal oxide is changed according to different requirements to regulate and control the reaction temperature, so that the reaction temperature area is better matched with the actual temperature, the heat dissipation loss is reduced, and the heat efficiency is improved. The thermochemical protective coating material is sprayed on the surface of the heat absorber by a spraying method, so that a coating surface with excellent performance can be obtained, the absorption rate of the heat absorber can be improved, the abrasion resistance, the impact resistance, the adhesion, the toughness, the corrosion resistance and the like are enhanced, and the service life of the heat absorber is prolonged.
Drawings
FIG. 1 shows a BaCo perovskite structure provided by an embodiment of the present invention 1-x Mn x O 3 Thermogravimetric curves of;
FIG. 2 is a thermogravimetric curve of a manganese-iron-lithium ternary composite metal oxide thermochemical heat storage material provided by an embodiment of the invention;
fig. 3 is a diagram of a thermochemical shielding system for an air heat sink according to an embodiment of the invention;
fig. 4 is a schematic view of an air heat sink configuration provided by an embodiment of the present invention;
fig. 5 is a cross-sectional view of a heat sink without a thermochemical protective coating provided by an embodiment of the invention;
fig. 6 is a cross-sectional view of a heat sink with a sprayed thermochemical protective coating provided by an embodiment of the invention;
fig. 7 is a temperature tone scale plot of a heat sink without a thermochemical protective coating and a heat sink with a sprayed thermochemical protective coating provided by an embodiment of the invention.
Reference numerals
1. Thermochemical protective coating
2. Air compressor
3. Pressure reducing valve
4. Flow meter
5. Valve gate
6. Solar energy simulation lamp
7. Heat absorber
a air inlet
b air outlet
T1-T5 thermocouple
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a thermochemical protective coating material which comprises ABO 3 Perovskite material or lithium-doped ternary complex metal oxide, wherein ABO 3 The A site of the perovskite material is any two or more of La, ca, ba, sr and K, and/or the ABO 3 The B site of the perovskite material is a combination of any two or three of Mn, fe and Co.
Specifically, the thermochemical protective coating material provided by the invention comprises ABO suitable for medium-high temperature heat storage 3 Perovskite materials or lithium doped ternary complex metal oxides. By altering ABO 3 The reaction temperature of the composite metal oxide can be adjusted by the proportion of the doping elements at the A site or the B site of the perovskite material and the molar ratio of each element in the ternary composite metal oxide, so that the adding proportion can be flexibly selected according to the requirement to obtain the specific reaction temperature. The thermochemical protective coating material with the thermochemical heat storage capacity can improve the thermal shock of the protective inner layer material, and the working stability of the system is improved by utilizing the heat storage capacity of the thermochemical protective coating material.
Example 1
The present embodiment provides an ABO 3 The metal oxide thermochemical protective coating material with a perovskite structure. In the perovskite structure, the a site is mostly an alkali metal element such as La, ca, ba, sr, etc., and the B site is mostly a transition metal element such as Mn, co, fe, etc., and the actual perovskite material generally has oxygen in a non-stoichiometric ratio. The regulation and control of the oxidation reaction temperature and the reduction reaction temperature can be realized by doping other elements with different proportions at the A site or the B site.
In this example, ABO with doping elements 3 The perovskite material is BaCo 1-x Mn x O 3 Wherein, ba and Co are in-situ elements, and Mn is a doping element. The content of Mn may vary between 0 and 0.4, i.e. x may be any value between 0 and 0.4. FIG. 1 shows BaCo 1-x Mn x O 3 As can be seen from fig. 1, when x is varied within a range of 0 to 0.4, the reaction temperature is varied within a range of 500 to 720 ℃, and increases as x increases.
ABO provided by the present example 3 The preparation method of the metal oxide thermochemical protective coating material with the perovskite structure comprises the following steps:
the method comprises the following steps: mixing nitrate, citric acid and glycol in certain proportion, heating and stirring to form gel. Specifically, the required nitrate, citric acid, ethylene glycol, deionized water and the like are weighed according to a calculated ratio, placed in a beaker, stirred for 3 hours in an environment of 70 ℃, during which the pH =8 is adjusted with ammonia, and then mixed with citric acid: ethylene glycol =3 molar ratio of 2 ethylene glycol was added and stirred at 90 ℃ for 2h until a gel was formed.
Step two: the formed gel was poured into a crucible and dried in an oven at 200 ℃ for 3h.
Step three: and putting the dried sample into a tubular furnace, calcining for 3 hours at 300 ℃, then heating to 1000 ℃, and calcining for 5 hours at high temperature.
Step four: and cooling the calcined sample to room temperature, taking out and grinding the calcined sample into powder to obtain the thermochemical protective coating material.
Example 2
The embodiment provides a thermochemical protective coating material of a ternary composite metal oxide. The ternary composite metal oxide described in this embodiment is a manganese-iron-lithium ternary composite metal oxide, and the reaction temperature is changed by changing the molar ratio of three elements, namely manganese, iron and lithium, so that the molar ratio of the three elements, namely manganese, iron and lithium is different, and the reaction starting temperature and the maximum reaction rate temperature are different.
In the embodiment, the molar ratio of manganese, iron and lithium in the manganese-iron-lithium ternary composite metal oxide is x: y: z, wherein (x + y) z is 1-1.5. Fig. 2 is a thermogravimetric curve of the lithium ferromanganese ternary composite metal oxide, and it can be seen from fig. 2 that the reaction temperature of the lithium ferromanganese ternary composite metal oxide is 600-900 ℃.
The manganese-iron-lithium ternary composite metal oxide thermochemical protective coating material provided by the embodiment is prepared by a sol-gel method, and comprises the following steps:
the method comprises the following steps: mixing nitrates of manganese, iron and lithium, citric acid and glycol according to a certain proportion, heating and stirring until gel is formed;
step two: drying the gel formed in the first step at the temperature of 200 ℃ to obtain a sample;
step three: calcining the sample in an environment of 450 ℃ and then in an environment of 800 ℃;
step four: and taking out the calcined sample, and grinding the calcined sample into powder to obtain the thermochemical protective coating material.
The composite metal oxide thermochemical heat storage material prepared by the sol-gel method has a porous structure with micron-sized pore diameter, so that the contact area between the heat storage material and gas can be increased, and the reactivity of the composite metal oxide thermochemical heat storage material is improved.
Example 3
This example provides a process for the preparation of a thermochemical protective coating.
The preparation method of the thermochemical protective coating for the workpiece comprises preparation before spraying and electrostatic powder spraying, wherein the preparation before spraying comprises the following steps:
before coating, the workpiece to be sprayed needs to be pretreated. The pretreatment can fully exert the characteristics of the thermochemical protective coating and can prolong the service life of the thermochemical protective coating. The pretreatment steps are as follows:
the method comprises the following steps: cleaning the surface of a workpiece to be sprayed, and removing stains, paint and oxides attached to the surface;
step two: performing surface preprocessing, and reserving a certain thickness of a spraying layer to enable the sprayed workpiece to meet the design size requirement;
step three: and carrying out surface roughening treatment on the pre-sprayed workpiece through sand blasting. The sand blasting material can be selected by the surface hardness of the pre-sprayed workpiece, and in the embodiment, the sand blasting material can be polygonal condensed cast iron sand (suitable for the surface of the pre-sprayed workpiece with the hardness of about HRC 50), corundum sand (suitable for the surface of the pre-sprayed workpiece with the hardness of about HRC 40) and quartz sand (suitable for the surface of the pre-sprayed workpiece with the hardness of about HRC 40), and can also be subjected to surface roughening by mechanical processing;
step four: and (4) preheating. After the surface is roughened, preheating is needed to improve the surface bonding strength;
step five: and spraying a bonding bottom layer. In order to improve the bonding strength between the thermochemical protective coating and the sprayed workpiece, a bonding bottom layer can be sprayed after the sprayed workpiece is pretreated, the thickness of the bonding bottom layer is determined according to the size of the specific workpiece, and the thickness of the bonding bottom layer is 50-100 micrometers under the condition that the workpiece is thin and the sandblasting is easy to deform;
spraying a thermochemical protective coating. And spraying a thermochemical protective coating on the surface of the workpiece to be sprayed by adopting an electrostatic spraying machine. The spraying steps are as follows:
the method comprises the following steps: uniformly spraying a layer of thermochemical protection powder coating on the surface of the workpiece by utilizing the electrostatic adsorption principle;
step two: and (3) placing the sprayed workpiece in a high-temperature furnace at about 200 ℃ for 20min to melt, level and solidify the powder.
The thickness of the electrostatic powder spraying at one time can reach 50-80 mu m, parameters of a thermochemical protective coating material and air can be set through a control system, and the powder yield and the atomization state of the thermochemical protective coating material can be changed, so that different coating thicknesses can be realized, and the thickness requirements of different sprayed coatings can be met.
The thermochemical protective coating sprayed by adopting the electrostatic powder has the lasting performance of a coating, and besides the thermochemical protective coating has certain thermochemical protective capability, other performances are greatly improved, including abrasion resistance, impact resistance, adherence, toughness and corrosion resistance.
Example 4
The embodiment provides a method for protecting an air heat absorber 8 by using the perovskite material coating, and the perovskite material can realize the characteristics of heat storage/heat release in medium-high temperature environment to perform thermochemical protection on the heat absorber.
Fig. 3 is a diagram of a thermochemical shielding system for the heat sink 8, as shown in fig. 3, comprising: the solar energy simulation system comprises an air compressor 2, a pressure reducing valve 3, a flow meter 4, a valve 5, a solar energy simulation lamp 6 and a heat absorber 7, wherein T1-T5 are thermocouples, a is an air inlet, and b is an air outlet. Fig. 4 is a schematic structural view of the heat sink 7, and fig. 5 and 6 are sectional views of the heat sink without the thermochemical protective coating and with the thermochemical protective coating sprayed thereon, respectively.
Spraying the perovskite material onto a heat absorber 7 by electrostatic powder spraying method, wherein the thickness of the coating is 60 μm, heating the coating under a solar simulation lamp 6, and keeping the air flow at 6m 3 And h, starting one simulation lamp 6 every ten minutes, measuring the temperature once every one minute by using an infrared thermometer after the 6 th solar simulation lamp 6 is started, and comparing the temperature with the temperature of the heat absorber 7 without the thermal chemical protective coating 1, wherein the experimental result is shown in figure 7, wherein d-g is the temperature measured without the thermal chemical protective coating 1, namely the temperature of a light pipe, and h-k is the temperature after the thermal chemical protective coating 1 is sprayed.
As can be seen from fig. 7, when there is no thermal chemical protective coating 1, the temperature of the 6 th simulated lamp 6 just started is 560 ℃, the temperature of the 6 th simulated lamp 6 after the thermal chemical protective coating 1 is sprayed is 580 ℃, which is higher than the temperature when there is no thermal chemical protective coating 1, because the coating is black, the radiation absorption rate of the heat absorber 7 after the coating is sprayed is increased, and the temperature of the heat absorber absorbs more radiation energy is increased. After the 6 th simulation lamp 6 is started for three minutes, the temperature of the heat absorber 7 without the thermochemical protective coating 1 is increased to 657 ℃, while the temperature of the heat absorber 7 sprayed with the thermochemical protective coating 1 is basically stabilized at 640 ℃, and at the moment, the thermochemical protective coating 1 starts to react to absorb heat and prevent the heat absorber 7 from overheating.
In the embodiment, the temperature of the heat absorber 7 sprayed with the thermochemical protective coating 1 is finally stabilized at 640 ℃, which means that the reaction temperature of the coating is about 640 ℃, and in practical application, the thermochemical protective coating 1 with the corresponding reaction temperature can be prepared by changing the type and proportion of the metal oxide according to the actual required temperature.
While the present invention has been described with reference to the specific embodiments, it should be understood that the present invention is not limited to the specific embodiments, and although the composite metal oxide thermochemical protective coating material is ternary composite metal oxide in the embodiments of the present invention, the present invention shall be understood by those skilled in the art that the use of lithium-doped quaternary and above composite metal oxide as the protective coating material shall also fall within the protection scope of the present invention without departing from the gist of the present invention, and those skilled in the art can make various changes and modifications within the scope of the claims, which do not affect the essence of the present invention, and the features in the embodiments and examples of the present application can be arbitrarily combined with each other without conflict.
Claims (4)
1. A thermochemical protective coating is characterized by being formed by spraying thermochemical protective coating materials, wherein the thermochemical protective coating materials comprise ternary composite metal oxides doped with lithium,
the thermochemical protective coating material is sprayed on the surface of the heat absorber;
changing the molar ratio of metal elements in the ternary composite metal oxide to obtain the thermochemical protective coating material with specified reaction temperature, wherein the specified reaction temperature is adapted to the temperature requirement of the heat absorber;
the lithium-doped ternary composite metal oxide is a manganese-iron-lithium ternary composite metal oxide, and the molar weight ratio of manganese to iron to lithium is x: y: z (x + y) is 1-1.5, and the molar weight ratio of ferromanganese x to y is 2;
the thermochemical protective coating is a microporous membrane with the thickness of 50-80 mu m formed by spraying of an electrostatic powder spraying system.
2. The thermochemical protective coating of claim 1, wherein the thermochemical protective coating material further comprises silicon carbide.
3. The thermochemical protective coating of claim 1, wherein the thermochemical protective coating material further comprises a polysilazane-based organic polymer ceramic precursor.
4. Thermochemical protective coating according to claim 1, characterized in that it further comprises a black chrome layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110600828.0A CN113604079B (en) | 2021-05-31 | 2021-05-31 | Thermochemical protective coating material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110600828.0A CN113604079B (en) | 2021-05-31 | 2021-05-31 | Thermochemical protective coating material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113604079A CN113604079A (en) | 2021-11-05 |
| CN113604079B true CN113604079B (en) | 2022-11-25 |
Family
ID=78303425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110600828.0A Active CN113604079B (en) | 2021-05-31 | 2021-05-31 | Thermochemical protective coating material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113604079B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903859B (en) * | 2021-12-02 | 2022-02-22 | 中国华能集团清洁能源技术研究院有限公司 | Method for preparing perovskite layer by dry method and perovskite type solar device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811772B (en) * | 2012-11-09 | 2016-12-21 | 中国科学院物理研究所 | Composite containing perovskite structure oxide and its production and use |
| US10800665B1 (en) * | 2014-09-05 | 2020-10-13 | National Technology & Engineering Solutions Of Sandia, Llc | Redox-active oxide materials for thermal energy storage |
| US10494996B2 (en) * | 2016-08-12 | 2019-12-03 | Zhejiang University | Device of high-temperature solar turbine power generation with thermal energy storage |
| CN111102753A (en) * | 2018-10-29 | 2020-05-05 | 浙江大学 | Heat sink and method for operating a heat sink |
-
2021
- 2021-05-31 CN CN202110600828.0A patent/CN113604079B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113604079A (en) | 2021-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102585571B (en) | Infrared energy-saving coating with anti-corrosion and anti-coking functions and preparation method thereof | |
| EP3321502B1 (en) | Heat dissipation retaining structure for heat production device, installation method thereof, and wind turbine generator set | |
| CN101854131B (en) | High-temperature-resistant selective solar energy-absorbing film and preparation method thereof | |
| CN113604079B (en) | Thermochemical protective coating material and preparation method thereof | |
| CN107573731B (en) | High-temperature infrared radiation coating and preparation method and application thereof | |
| CN109534772B (en) | Novel superconducting ceramic film composite material and preparation method thereof | |
| Kariya et al. | Development of thermal energy storage material using porous silicon carbide and calcium hydroxide | |
| CN114736003B (en) | Preparation method of high-temperature chlorine corrosion resistant ceramic coating for incinerator based on fly ash | |
| CN114605875A (en) | Double-layer organic-inorganic composite building energy-saving coating material and preparation method thereof | |
| CN106986662B (en) | Solar heat-absorbing ceramic material and preparation method thereof | |
| CN113979717B (en) | Infrared radiation material, infrared radiation coating material and application thereof | |
| CN109735310B (en) | Full-spectrum photo-thermal conversion heat storage material and preparation method thereof | |
| CN104403558A (en) | Preparation method for solar-energy selectively-adsorbing paint with self cleaning function | |
| CN115537046B (en) | High weather-resistant high heat absorption water-based inorganic ceramic coating and preparation and construction methods thereof | |
| CN105860611A (en) | Infrared radiation paint and preparation method thereof | |
| CN104697210B (en) | The solar spectrum selective absorbing film of a kind of in-situ self-grown and its preparation method | |
| CN115433007A (en) | Solar spectrum wide-frequency absorption material and preparation method thereof | |
| CN105970146B (en) | Tower type solar photo-thermal power station heat dump coating for selective absorption, preparation method and heat dump | |
| EP3884210B1 (en) | A sol-gel material and use thereof | |
| CN103725142B (en) | The preparation method of the middle high temperature solar energy selective absorbing coating that a kind of weathering resistance is high | |
| CN102702808B (en) | Infrared radiation coating capable of forming coating with low conductivity factor | |
| CN115677369B (en) | Graphite shell for thermal power plant and preparation process thereof | |
| CN113418307B (en) | Efficient solar energy conversion cooker | |
| CN115058144A (en) | Preparation method of solar radiation absorbing coating in solar energy utilization field | |
| CN109974317B (en) | Solar energy absorption system with composite absorption mechanism and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |