CN111849346A - Irreversible three-color-change temperature indicating paint based on isotherm identification and coating manufacturing method - Google Patents
Irreversible three-color-change temperature indicating paint based on isotherm identification and coating manufacturing method Download PDFInfo
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- CN111849346A CN111849346A CN202010665275.2A CN202010665275A CN111849346A CN 111849346 A CN111849346 A CN 111849346A CN 202010665275 A CN202010665275 A CN 202010665275A CN 111849346 A CN111849346 A CN 111849346A
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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
- C09D5/26—Thermosensitive paints
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
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- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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Abstract
The invention relates to irreversible thermochromic temperature indicating paint based on isotherm identification and a coating manufacturing method. The irreversible thermochromic temperature indicating paint based on isothermal line identification comprises 15.2-17.2% by mass of zinc-titanium yellow, 2.8-3.2% by mass of antimony-tin yellow, 15.5-16.5% by mass of zirconium dioxide, 0.9-1.3% by mass of yttrium oxide, 29.0-31.0% by mass of high-temperature organic resin 805, 26.8-28.8% by mass of xylene and 5.4-6.4% by mass of n-butyl alcohol. The irreversible thermochromic temperature indicating paint based on isotherm identification can accurately form isotherms, so that the temperature distribution condition of the surface of an object can be conveniently and accurately judged.
Description
Technical Field
The invention relates to a functional coating for testing the surface temperature of a high-temperature component, in particular to irreversible thermochromic temperature indicating paint based on isotherm identification.
Background
The irreversible temperature indicating paint is a functional paint which is coated on the surface of an object, can show different colors according to the surface temperature of the object and has irreversibility. The temperature indicating paint can be conveniently coated on the surface of an object to be measured, is not limited by the shape, the structure and the motion state of the object, particularly is not limited when being used on a part rotating at high speed, and can finish the measurement which is difficult or difficult to process by a thermocouple. And the irreversible temperature indicating paint can avoid errors caused by temperature drop due to the irreversibility, has higher precision, and is widely used for measuring the surface temperature of high-temperature components of the engine.
A plurality of varieties of temperature indicating paints are developed abroad, wherein the typical multi-color temperature indicating paint developed by Baoma Roche company has 7 varieties of working temperature ranging from 280 ℃ to 1170 ℃, the calibration and the use of the temperature indicating paint have strict process specifications, and the interpretation precision can reach +/-10 ℃. However, the temperature indicating paint technology is seriously blocked abroad, so that the public can not obtain the temperature indicating paint formula with high identification precision.
The research on the irreversible temperature indicating paint in China starts in the 60 s, and partial irreversible temperature indicating paint is developed in the beginning of the 90 s, the working temperature range of the multi-color temperature indicating paint is from 400 ℃ to 960 ℃, and 6 varieties are used, and the calibration and interpretation of the temperature indicating paint are based on color but have no strict process specification. After being tried on high-temperature components of an engine for many years, the developed irreversible temperature indicating paint has the problems that a coating is easy to fall off, the color difference between the color of the developed irreversible temperature indicating paint and the color of a standard color plate provided by a production factory is too large, the precision is lower, and the interpretation error is larger, and the requirement of actual temperature measurement is difficult to meet.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems that a multi-color irreversible thermopaint coating in the prior art is easy to fall off, has low precision and large discrimination error, the invention provides the irreversible thermochromic thermopaint which is difficult to fall off, has high precision and small discrimination error, and a coating made of the irreversible thermochromic thermopaint can accurately display isotherms at three corresponding color change points on the surface of an object.
The technical scheme of the invention is as follows: in order to solve the technical problems, the irreversible thermochromic temperature indicating paint based on isotherm identification provided by the invention comprises 15.2-17.2% by mass of zinc-titanium yellow, 2.8-3.2% by mass of antimony-tin yellow, 15.5-16.5% by mass of zirconium dioxide, 0.9-1.3% by mass of yttrium oxide, 29.0-31.0% by mass of high-temperature organic resin 805, 26.8-28.8% by mass of xylene and 5.4-6.4% by mass of n-butyl alcohol.
The mass ratio of the zinc-titanium yellow is 16.2%, the mass ratio of the antimony-tin yellow is 3.0%, the mass ratio of the zirconium dioxide is 16.0%, the mass ratio of the yttrium oxide is 1.1%, the mass ratio of the high-temperature organic resin 805 is 27.8%, the mass ratio of the xylene is 27.8%, and the mass ratio of the n-butanol is 5.9%.
The fineness of the irreversible temperature indicating paint is not more than 20 mu m, and the viscosity range is 24-30 seconds.
The thickness of the irreversible temperature indicating paint coated on the surface of an object is 18-26 mu m.
In addition, the invention provides a manufacturing method of the single-color-changing irreversible temperature indicating paint coating based on the isotherm identification, which comprises the following steps:
step 1, uniformly mixing 15.2-17.2% by mass of zinc-titanium yellow, 2.8-3.2% by mass of antimony-tin yellow, 15.5-16.5% by mass of zirconium dioxide, 0.9-1.3% by mass of yttrium oxide, 29.0-31.0% by mass of high-temperature organic resin 805, 26.8-28.8% by mass of dimethylbenzene and 5.4-6.4% by mass of n-butyl alcohol, and grinding to prepare irreversible temperature indicating paint;
step 2, stirring the irreversible temperature indicating paint to ensure that the fineness of the irreversible temperature indicating paint is not more than 20 mu m and the viscosity range is 24-30 seconds;
step 3, cleaning the surface to be sprayed, and spraying by using a spray pressure gun with the spray pressure of 0.2-0.3 MPa, wherein the distance between the spray pressure gun and the sprayed surface is 10-15 cm;
step 4, drying the sprayed irreversible temperature indicating paint coating;
and 5, measuring the thickness of the irreversible temperature indicating paint coating, and repeating the steps 3, 4 and 5 if the thickness of the irreversible temperature indicating paint coating is not within 18-26 mu m.
The invention has the beneficial effects that: the irreversible thermochromic temperature indicating paint based on isothermal line identification is prepared by screening temperature sensitive pigment, temperature indicating paint color-assisting filler, bonding pigment, uniform color-spreading base material, solvent for dissolving the base material and diluent, and selecting the pigment, the filler, the base material and the solvent from the selected raw materials according to a certain proportion. When the irreversible thermochromic temperature indicating paint is coated on the surface of a high-temperature object, the paint can obviously change color at corresponding color changing points, isotherms of three colors are formed at the three temperature points, each color represents one temperature, so that the temperature change condition of the surface of the high-temperature object is accurately displayed, and test technical support can be provided for new machine development, in-service engine test verification and wall surface temperature measurement in other industrial fields. Moreover, the irreversible temperature indicating paint raw materials are all produced at home, the purchase is convenient, the research and development and the use cost are low, and the test cost is only 20 percent of the temperature measurement cost of the conventional thermocouple, so the test cost is greatly reduced, and the irreversible temperature indicating paint has great military, economic benefit and social benefit.
Drawings
FIG. 1 is a schematic diagram of an isotherm of a preferred embodiment of the irreversible thermochromic temperature indicating paint based on isotherm identification.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
the irreversible thermochromic temperature indicating paint based on isothermal line identification is prepared by screening temperature sensitive pigment, temperature indicating paint color-assisting filler, bonding pigment, uniform color-spreading base material, solvent for dissolving the base material and diluent, and selecting the pigment, the filler, the base material and the solvent from the selected raw materials according to a certain proportion. In this embodiment, the prepared irreversible thermochromic temperature indicating paint based on isotherm identification is prepared by uniformly mixing 16.2% by mass of zinc-titanium yellow, 3.0% by mass of antimony-tin yellow, 16.0% by mass of zirconium dioxide, 1.1% by mass of yttrium oxide, 27.8% by mass of high-temperature organic resin 805, 27.8% by mass of xylene, and 5.9% by mass of n-butanol, and grinding the mixture. The color-changing pigments zinc-titanium yellow and antimony-tin yellow are sensitive to heat, have good coloring and covering power, change color rapidly under the heat, have large color difference before and after color change, and have obvious color-changing limits. The filler zirconium dioxide and yttrium oxide have good heat resistance, light resistance and weather resistance, are not easy to pulverize, are beneficial to color development of the temperature indicating paint, and can enhance the adhesive force of the coating. The base material high-temperature organic resin 805 has good temperature resistance and strong adhesive force, does not react with pigments and fillers when mixed, can obviously enhance the adhesive force of a coating, and ensures that the irreversible thermochromic temperature indicating paint is not easy to fall off. The mixture of the solvent xylene and the n-butyl alcohol has good capability of dissolving the base material high-temperature organic resin 805, and does not react with the pigments of zinc-titanium yellow, antimony-tin yellow, filler zirconium dioxide and yttrium oxide, so that the components of the irreversible thermochromic temperature indicating paint can be uniformly mixed, and the performance of the irreversible thermochromic temperature indicating paint is improved.
Grinding the prepared irreversible thermochromic temperature indicating paint for 0.5 hour, and then putting the temperature indicating paint on a rotating roller by using rotary stirring equipment to stir for 1 hour to complete the stirring of the temperature indicating paint, so that the fineness of the temperature indicating paint is not more than 20 mu m, and the viscosity of the temperature indicating paint is within 24-30 seconds. And scrubbing the surface of the dovetail type standard test piece to be sprayed once by using acetone 10 minutes before spraying, and finishing spraying of the dovetail type standard calibration test piece by using a small spray gun, wherein the pressure of the spray gun is between 0.2MPa and 0.3MPa, and the spraying distance between the spray gun and the dovetail type standard calibration test piece is 10-15 cm. After the spraying, the test piece was put into a drying oven to be dried and dried at 80 ℃ and kept at the constant temperature for 1 hour. And then measuring the thickness of the coating by using a coating thickness gauge, wherein the thickness of the irreversible thermochromic temperature indicating paint coating is about 22 mu m, the deviation of 4 mu m is allowed, if the coating is too thin or too thick, the coating is cleaned and sprayed again, and the irreversible thermochromic temperature indicating paint coating based on isothermal line identification is manufactured.
A plurality of dovetail type standard test pieces with the same formula are sprayed, a temperature control thermocouple is welded at the narrowest part of the side of the dovetail type standard test piece which is not sprayed with the temperature indicating paint, the sprayed dovetail type standard test piece is heated by temperature indicating paint calibration equipment according to a certain time and a certain temperature, the color change condition and the isotherm position of the test piece are observed, a thermocouple is arranged at the isotherm position of the other dovetail type standard test piece, the test piece is calibrated under the same condition, and the isotherm temperature is recorded at the same time. When the test piece reaches the peak temperature and is kept at the constant temperature for 3 minutes, the irreversible thermochromic temperature indicating paint changes color at 1035 ℃, 1090 ℃ and 1160 ℃ temperature points, and an isotherm is formed at each temperature point.
When the surface temperature of the engine is actually measured, the irreversible thermochromic temperature indicating paint is coated on the surface of the engine, the color change and the boundary of the temperature indicating paint on the surface of a high-temperature part of the engine are verified in high-temperature fuel gas and mixed gas, and the color change condition of the temperature indicating paint is compared with an isothermal line calibration result, so that the temperature distribution condition of the surface of the engine is quickly and accurately obtained.
In addition, according to actual needs, the formula of the irreversible thermochromic temperature indicating paint can be adjusted within a certain range, for example, the mass ratio of zinc-titanium yellow can be adjusted within 15.2-17.2%, the mass ratio of antimony-tin yellow can be adjusted within 2.8-3.2%, the mass ratio of zirconium dioxide can be adjusted within 15.5-16.5%, the mass ratio of yttrium oxide can be adjusted within 0.9-1.3%, the mass ratio of high-temperature organic resin 805 can be adjusted within 29.0-31.0%, the mass ratio of xylene can be adjusted within 26.8-28.8%, and the mass ratio of n-butyl alcohol can be adjusted within 5.4-6.4%.
The irreversible thermochromic temperature indicating paint prepared by the invention is prepared by firstly preparing a standard test piece and calibrating the temperature of an isotherm. And then the irreversible thermochromic temperature indicating paint is coated on the surface of an object to be measured, and the temperature distribution condition of the surface of the object can be conveniently and accurately judged according to the color change condition of each temperature indicating point of the irreversible thermochromic temperature indicating paint. The irreversible thermochromic temperature indicating paint prepared by the invention has obvious color change limit, higher interpretation precision and convenient coating, and is particularly suitable for occasions where common temperature measuring tools cannot or are difficult to measure, such as continuously operated parts, large-area surfaces and surfaces of complex objects. The environment is less influenced, the structure and the working state of a tested piece cannot be damaged, the aerodynamics and the thermodynamics of the tested engine cannot be influenced, the tested piece can be repeatedly used, the temperature measurement cost is low, the device can be widely applied to measurement of the surface temperature of the engine, a gas turbine, an industrial pipeline, ceramics, plastics and the like, and has great application value.
Claims (5)
1. The utility model provides an irreversible three discolour temperature indicating paint based on isotherm is discerned which characterized in that: the composite material comprises 15.2-17.2% by mass of zinc-titanium yellow, 2.8-3.2% by mass of antimony-tin yellow, 15.5-16.5% by mass of zirconium dioxide, 0.9-1.3% by mass of yttrium oxide, 29.0-31.0% by mass of high-temperature organic resin 805, 26.8-28.8% by mass of xylene and 5.4-6.4% by mass of n-butyl alcohol.
2. The irreversible thermochromic temperature indicating paint based on isotherm identification of claim 1, wherein: the mass ratio of the zinc-titanium yellow is 16.2%, the mass ratio of the antimony-tin yellow is 3.0%, the mass ratio of the zirconium dioxide is 16.0%, the mass ratio of the yttrium oxide is 1.1%, the mass ratio of the high-temperature organic resin 805 is 27.8%, the mass ratio of the xylene is 27.8%, and the mass ratio of the n-butanol is 5.9%.
3. The irreversible thermochromic paint based on isotherm identification as claimed in any one of claims 1 or 2, wherein: the fineness of the irreversible temperature indicating paint is not more than 20 mu m, and the viscosity range is 24-30 seconds.
4. The irreversible thermochromic temperature indicating paint based on isotherm identification of claim 3, wherein: the thickness of the irreversible temperature indicating paint coated on the surface of an object is 18-26 mu m.
5. The method for manufacturing the irreversible thermochromic temperature indicating paint coating based on isotherm identification of claim 1, comprising the steps of:
step 1, uniformly mixing 15.2-17.2% by mass of zinc-titanium yellow, 2.8-3.2% by mass of antimony-tin yellow, 15.5-16.5% by mass of zirconium dioxide, 0.9-1.3% by mass of yttrium oxide, 29.0-31.0% by mass of high-temperature organic resin 805, 26.8-28.8% by mass of dimethylbenzene and 5.4-6.4% by mass of n-butyl alcohol, and grinding to prepare irreversible temperature indicating paint;
step 2, stirring the irreversible temperature indicating paint to ensure that the fineness of the irreversible temperature indicating paint is not more than 20 mu m and the viscosity range is 24-30 seconds;
step 3, cleaning and spraying the surface to be sprayed;
step 4, drying the sprayed irreversible temperature indicating paint coating;
and 5, measuring the thickness of the irreversible temperature indicating paint coating, and repeating the steps 3, 4 and 5 if the thickness of the irreversible temperature indicating paint coating is not within 18-26 mu m.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011242A (en) * | 2022-05-27 | 2022-09-06 | 中国航发四川燃气涡轮研究院 | Three-color-change irreversible thermopaint based on isotherm identification and coating manufacturing method |
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| CN102492362A (en) * | 2011-11-28 | 2012-06-13 | 北方涂料工业研究设计院 | 800DEG C-1250DEG C multi color-changing irreversible thermopaint |
| CN107109207A (en) * | 2014-09-02 | 2017-08-29 | 特姆龙韩国有限公司 | Inorganic thermo-color additive for inorganic ceramic application composition |
| CN109777288A (en) * | 2018-12-07 | 2019-05-21 | 中昊北方涂料工业研究设计院有限公司 | A kind of high temperature section color variable irreversible temperature indicating paint and preparation method thereof |
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2020
- 2020-07-11 CN CN202010665275.2A patent/CN111849346A/en active Pending
Patent Citations (3)
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| CN102492362A (en) * | 2011-11-28 | 2012-06-13 | 北方涂料工业研究设计院 | 800DEG C-1250DEG C multi color-changing irreversible thermopaint |
| CN107109207A (en) * | 2014-09-02 | 2017-08-29 | 特姆龙韩国有限公司 | Inorganic thermo-color additive for inorganic ceramic application composition |
| CN109777288A (en) * | 2018-12-07 | 2019-05-21 | 中昊北方涂料工业研究设计院有限公司 | A kind of high temperature section color variable irreversible temperature indicating paint and preparation method thereof |
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| CN115011242A (en) * | 2022-05-27 | 2022-09-06 | 中国航发四川燃气涡轮研究院 | Three-color-change irreversible thermopaint based on isotherm identification and coating manufacturing method |
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Application publication date: 20201030 |