CN109666315A - The guard method of coating composition, coating, coating and platinum channel - Google Patents
The guard method of coating composition, coating, coating and platinum channel Download PDFInfo
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- CN109666315A CN109666315A CN201811513775.3A CN201811513775A CN109666315A CN 109666315 A CN109666315 A CN 109666315A CN 201811513775 A CN201811513775 A CN 201811513775A CN 109666315 A CN109666315 A CN 109666315A
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/187—Stirring devices; Homogenisation with moving elements
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
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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
- 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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- 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
- C09D7/65—Additives macromolecular
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Abstract
The present invention relates to coatings arts, disclose the guard method of a kind of coating composition, coating, coating and platinum channel.On the basis of the total weight of the coating composition, the coating composition contains the yttrium oxide of the zirconium oxide of 40-55 weight %, the silica of 20-40 weight %, the glass of 10-30 weight % and 2-15 weight %.Platinum channel is coated on using coating composition provided by the invention and coating, can effectively slow down the saturating hydrogen analysis oxygen of platinum channel, inhibit platinum volatilization, to reduce the generation of glass blister and extend the service life of platinum channel.
Description
Technical field
The present invention relates to coatings arts, and in particular to a kind of protection of coating composition, coating, coating and platinum channel
Method.
Background technique
Display glass is higher to the quality requirement of glass metal, and therefore, in order to improve the quality of glass, melting furnaces are furnished with platinum
Golden system mainly includes clarifier, blender, cooler and feeder sleeve etc. in existing platinum system.Platinum system is usually located
Under 1000-1600 DEG C of hot environment, bubble, the generation of these bubbles can be generated in the platinum channel that is chronically under high temperature
Mainly influenced by factors such as the OH radical amounts dissolved in the thermoelectric electrolysis of melt, oxide fining agent decomposition and glass metal,
It is wherein influenced by OH radical amount especially big.Platinum channel is reacted with the OH group in glass metal at high temperature, in glass metal
OH radical decomposition at neutral hydrogen and oxygen, hydrogen-permeable is by platinum crust, and oxygen is then enriched in the surface of glass metal,
It just will form bubble when oxygen concentration is more than the solubility limit of glass metal, that is, hydrogen analysis oxygen phenomenon occur, so as to cause product
It is bad.
Therefore, the saturating hydrogen analysis oxygen of platinum channel how is effectively reduced, glass blister generation is reduced, inhibits platinum volatilization, extends
The platinum channel service life is the important topic of glass substrate processing.
Summary of the invention
The purpose of the invention is to overcome the above problem of the existing technology, the present invention provides a kind of coatings combines
The guard method of object, coating, coating and platinum channel is coated on platinum using coating composition provided by the invention and coating
Channel can effectively slow down the saturating hydrogen analysis oxygen of platinum channel, inhibit platinum volatilization, to reduce the generation of glass blister and extend platinum
The service life in golden channel.
To achieve the goals above, first aspect present invention provides a kind of coating composition, wherein with the coating group
On the basis of the total weight for closing object, the coating composition contains the titanium dioxide of the zirconium oxide of 40-55 weight %, 20-40 weight %
The yttrium oxide of silicon, the glass of 10-30 weight % and 2-15 weight %.
Preferably, on the basis of the total weight of the coating composition, the coating composition contains 45-50 weight %'s
Zirconium oxide, the silica of 25-35 weight %, the glass of 15-25 weight % and 2-7 weight % yttrium oxide.
Preferably, the average grain diameter of the zirconium oxide is 20-150 μm.
Preferably, the average grain diameter of the zirconium oxide is 50-100 μm.
Preferably, the average grain diameter of the silica is 20-150 μm.
Preferably, the average grain diameter of the silica is 50-100 μm.
Preferably, the silica is colloidal silicon dioxide or the mixing being made of colloidal silicon dioxide and silica
Object.
Preferably, the amount ratio of colloidal silicon dioxide and silica is 1:1.5-5 in the mixture.
Preferably, the average grain diameter of the glass is 20-80 μm.
Preferably, the average grain diameter of the glass is 30-60 μm.
Preferably, the glass is selected from one of borosilicate glass, alumina silicate glass or aluminium borosilicate glass
Or it is a variety of.
Preferably, on the basis of the total weight of the borosilicate glass, the borosilicate glass includes: 65-70 weight
Measure the SiO of %2, the B of 20-25 weight %2O3, the NaO of 1-5 weight %, the Al of 0.5-5 weight %2O3, 0.2-2 weight %'s
K2The ZnO of O, 0.5-4 weight %.
Preferably, on the basis of the total weight of the alumina silicate glass, the alumina silicate glass includes: 68-73 weight
Measure the SiO of %2, the Al of 12-16 weight %2O3, the MgO of 2-6 weight %, the CaO of 3.5-5.5 weight %, 0.5-3.5 weight %
SrO, the BaO of 1-5 weight %, the ZnO of 0.5-4 weight %.
Preferably, on the basis of the total weight of the aluminium borosilicate glass, the aluminium borosilicate glass includes: 59-
The SiO of 62 weight %2, the B of 7-12 weight %2O3, the Al of 16-20 weight %2O3, the MgO of 0-8 weight %, 0-5 weight %'s
The SrO of CaO and 0-5 weight %.
Preferably, the average grain diameter of the zirconium oxide is 30-150 μm.
Preferably, the average grain diameter of the zirconium oxide is 50-100 μm.
Second aspect, the present invention provides a kind of coating, wherein the coating contain coating composition of the present invention and
Organic binder.
Preferably, relative to the coating composition of 100 parts by weight, the dosage of the organic binder is 0.5-10 weight
Measure part.
Preferably, the dosage of the organic binder is 1-5 parts by weight.
Preferably, the organic binder is selected from methylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, poly- second two
One of alcohol or phenolic resin are a variety of.
The third aspect, the present invention provides a kind of coatings, by will carry out hot place after coating of the present invention coating
It manages.
Fourth aspect, the present invention provides a kind of guard methods of platinum channel, wherein and this approach includes the following steps,
1) the step of the platinum channel surface coats coating provided by the invention；
2) the step of heat treatment forms protective coating is carried out to the coating of coating.
Preferably, the protective coating with a thickness of 500-3000 μm.
Preferably, the protective coating with a thickness of 1000-1500 μm.
Platinum channel is coated on using coating composition provided by the invention and coating, it is saturating can effectively to slow down platinum channel
Hydrogen analyses oxygen, inhibits platinum volatilization, to reduce the generation of glass blister and extend the service life of platinum channel.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In a first aspect, the present invention provides a kind of coating compositions, wherein using the total weight of the coating composition as base
Standard, the coating composition contain the zirconium oxide of 40-55 weight %, the silica of 20-40 weight %, 10-30 weight %
The yttrium oxide of glass and 2-15 weight %.
Coating composition according to the present invention, it is preferable that on the basis of the total weight of the coating composition, the coating
Composition contains the zirconium oxide of 45-50 weight %, the silica of 25-35 weight %, the glass of 15-25 weight % and 2-7 weight
Measure the yttrium oxide of %.
In the coating composition of the present invention, zirconium oxide is used to improve the stability of glass.Rich zirconium is formed in compound phase
Area, enhances the heat-resisting quantity of coating material, while significantly improving alkali resistance.Therefore, comprehensively consider, with the coating composition
On the basis of total weight, the content of the zirconium oxide is 40-55 weight %, preferably 45-50 weight %, specifically, such as can be with
For 40 weight %, 41 weight %, 43 weight %, 45 weight %, 46 weight %, 47 weight %, 48 weight %, 49 weight %, 50
Weight %, 51 weight %, 53 weight % or 55 weight %.
In the coating composition of the present invention, silica is used to improve heat-resisting quantity, the mechanical strength of glass, increases glass
The high temperature viscosity of glass.Therefore, comprehensively consider, on the basis of the total weight of the coating composition, the content of the silica
For 20-40 weight %, preferably 25-35 weight %, specifically, such as can for 20 weight %, 23 weight %, 25 weight %,
26 weight %, 28 weight %, 30 weight %, 31 weight %, 32 weight %, 33 weight %, 34 weight %, 35 weight %, 37 weights
Measure %, 39 weight % or 40 weight %.
In the coating composition of the present invention, glass ingredient is used as the bonding matrix of each component at high temperature, therefore, comprehensive
Consider, on the basis of the total weight of the coating composition, the content of the glass is 10-30 weight %, preferably 15-25 weight
Measure %, specifically, for example, can for 10 weight %, 11 weight %, 13 weight %, 15 weight %, 16 weight %, 17 weight %,
18 weight %, 19 weight %, 20 weight %, 21 weight %, 22 weight %, 23 weight %, 24 weight %, 25 weight %, 27 weights
Measure %, 29 weight % or 30 weight %.
In the coating composition of the present invention, yttrium oxide can reduce and hydrogen atom key to a certain extent as stabilizer
The probability for forming hydroxyl is closed, the content of hydroxyl in glass is reduced.Therefore, comprehensively consider, with the total weight of the coating composition
On the basis of, the content of the yttrium oxide is 2-15 weight %, preferably 2-7 weight %, specifically, for example, can for 2 weight %,
3 weight %, 4 weight %, 5 weight %, 6 weight %, 7 weight %, 9 weight %, 11 weight %, 13 weight % or 15 weight %.
Coating composition of the invention passes through zirconium oxide, silica, glass and the yttrium oxide of selection specific components content,
Using the cohesive action of elevated temperature melts compound phase in conjunction with matrix, diffusion process is prevented or slowed down, reduces corrosive medium to base
The erosion of body achievees the purpose that protect matrix.
Coating composition according to the present invention comprehensively considers the thickness of mixed effect and film forming, it is preferable that the zirconium oxide
Average grain diameter be 20-150 μm；It is highly preferred that the average grain diameter of the zirconium oxide is 50-100 μm.
In the coating composition of the present invention, comprehensively consider the compactness and intensity of film, it is preferable that the silica
Average grain diameter is 20-150 μm；It is highly preferred that the average grain diameter of the silica is 50-100 μm.Partial size is excessive, even if containing
There is glass ingredient, is also unable to get dense film；Average grain diameter is too small, then can lose the function of enhancing film-strength.
Coating composition according to the present invention, in order to further enhance the compactness of film, it is preferable that the silica is
Colloidal silicon dioxide or the mixture being made of colloidal silicon dioxide and silica.
For the colloidal silicon dioxide additive amount in said mixture, there is no particular limitation, is at least containing some
Can, colloidal silicon dioxide plays the role of inorganic binder in coating material, by using colloidal silicon dioxide, can be formed more
Therefore fine and close film comprehensively considers the compactness of film, it is preferable that colloidal silicon dioxide and silica in the mixture
Amount ratio is 1:1.5-5；It is highly preferred that the amount ratio of colloidal silicon dioxide and silica is 1:2-4, tool in the mixture
Body, for example, can for 1:1.5,1:1.7,1:2,1:2.1,1:2.3,1:2.5,1:2.7,1:3,1:3.2,1:3.4,1:3.6,
1:3.8,1:4,1:4.1,1:4.3,1:4.5,1:4.7 or 1:5 etc..
In the coating composition of the present invention, the partial size of glass will affect the film thickness after mixed effect and film forming, and synthesis is examined
Consider the thickness of mixed effect and film forming, it is preferable that the average grain diameter of the glass is 20-80 μm；It is highly preferred that the glass
Average grain diameter is 30-60 μm.
For above-mentioned glass, there is no particular limitation, in a specific embodiment of the invention, it is preferable that the glass choosing
From one of borosilicate glass, alumina silicate glass or aluminium borosilicate glass or a variety of.
In a specific embodiment of the invention, on the basis of the total weight of the borosilicate glass, the borosilicic acid
Salt glass includes: the SiO of 65-70 weight %2, the B of 20-25 weight %2O3, the NaO of 1-5 weight %, 0.5-5 weight %'s
Al2O3, the K of 0.2-2 weight %2The ZnO of O, 0.5-4 weight %.
In a specific embodiment of the invention, on the basis of the total weight of the alumina silicate glass, the manosil AS
Salt glass includes the SiO of 68-73 weight %2, the Al of 12-16 weight %2O3, the MgO of 2-6 weight %, 3.5-5.5 weight %'s
The SrO of CaO, 0.5-3.5 weight %, the BaO of 1-5 weight %, the ZnO of 0.5-4 weight %.
In a specific embodiment of the invention, on the basis of the total weight of the aluminium borosilicate glass, the aluminium boron
Silicate glass includes: the SiO of 59-62 weight %2, the B of 7-12 weight %2O3, the Al of 16-20 weight %2O3, 0-8 weight %
MgO, the SrO of the CaO and 0-5 weight % of 0-5 weight %.
Coating composition according to the present invention comprehensively considers mixed effect and performance, it is preferable that the zirconium oxide is averaged
Partial size is 30-150 μm；It is highly preferred that the average grain diameter of the zirconium oxide is 50-100 μm.
Second aspect, the present invention provides a kind of coating, wherein the coating contain coating composition of the present invention and
Organic binder.
For the additive amount of the organic binder in above-mentioned coating, there is no particular limitation, comprehensively consider coating viscosity and
Paintability, it is preferable that relative to the coating composition of 100 parts by weight, the dosage of the organic binder is 0.5-10
Parts by weight；It is highly preferred that the dosage of the organic binder is 1-5 parts by weight.
For the type of above-mentioned organic binder, also there is no particular limitation, in a specific embodiment of the invention, excellent
Selection of land, the organic binder are selected from methylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, polyethylene glycol or phenolic aldehyde tree
One of rouge is a variety of.
The third aspect, the present invention provides a kind of coatings, by will carry out hot place after coating of the present invention coating
It manages.
Fourth aspect, the present invention provides a kind of guard methods of platinum channel, wherein and this approach includes the following steps,
1) the step of the platinum channel surface coats coating provided by the invention；
2) the step of heat treatment forms protective coating is carried out to the coating of coating.
In guard method of the present invention, for the method for above-mentioned coating, there is no particular limitation, can be spraying, coating etc.
Mode uses coating method in a specific embodiment of the invention.
For the material of above-mentioned platinum channel, there is no particular limitation, such as can close for pure platinum, platinum-rhodium alloy, platinum-gold
Gold, platinum-palladium alloy, platinum-iridium alloy etc..
Guard method according to the present invention, protective coating is too thin, and protectiveness is not strong；Overweight coating, be not achieved with thickness at
Therefore the effect of direct ratio comprehensively considers the thickness and protective value of protective coating, it is preferable that the protective coating with a thickness of
500-3000μm；It is highly preferred that the protective coating with a thickness of 1000-1500 μm.
Preparation example
The colloidal solution of glass and zirconium oxide, yttrium oxide, silica and silica is incorporated as 2 times of its solid weight
Water in, formed suspension, and add relative to solid weight be 4 weight % methylcellulose be stirred, coating is made.
Test film is used as using platinum piece (50g), is heated, coating is sprayed repeatedly to test from the back side using resistance wire
Piece.Until thickness reaches 500 μm.It is fired at 1650 DEG C in electric furnace, burns process are as follows: with the rate of 5 DEG C/min by room
Up to 300 DEG C of temperature rise；1h is kept the temperature after being warming up to 1400 DEG C by 300 DEG C with the rate of 8 DEG C/min；Then with the heating of 3 DEG C/min
Rate is warming up to 1650 DEG C by 1400 DEG C and encloses interior, heat preservation 2h after annealing when temperature rises to 1650 DEG C.
Test method: heating test film 30 days at 1450 DEG C and 1600 DEG C, and weight change after measurement heating measures platinum
The volatilization situation of gold.
Embodiment 1-9
It according to shown in following table 1, is prepared according to the method described above, test result is referring to table 1.
Comparative example 1
It according to shown in following table 1, is prepared according to the method described above, test result is referring to table 1.
Comparative example 2
Using same test method, but platinum piece, without coating, test result is referring to table 1.
Table 1
In the embodiment 1-3 of table 1, the weight percent of each ingredient is SiO in glass ingredient2: 59%, B2O3: 12%,
Al2O3: 16%, MgO:8%, CaO:3%, SrO:2%, colloidal silicon dioxide accounts for the 20% of total amount in silica mixture.
In the embodiment 4-6 of table 1, the weight percent of each constituent is SiO in glass ingredient2: 60%, B2O3: 8%,
Al2O3: 18%, MgO:7%, CaO:4%, SrO:3%, colloidal silicon dioxide accounts for the 30% of total amount in silica mixture.
In the embodiment 7-9 of table 1, the weight percent of each constituent is SiO in glass ingredient2: 62%, B2O3: 7%,
Al2O3: 20%, MgO:2%, CaO:5%, SrO:4%, colloidal silicon dioxide accounts for the 40% of total amount in silica.
By the result of table 1:
Platinum alloy in the comparative example 2 of uncoated material covering, the loss amount at 1450 DEG C and 1600 DEG C is larger, damage
Vector is in 1.3g or more, and loss amount is obviously increased with the rising of temperature；
Loss amount using the platinum alloy in the comparative example 1 outside the application protection scope, at 1450 DEG C and 1600 DEG C
It is apparently higher than embodiment 1-9；
The platinum piece of coating material (the firing film) covering formed using the embodiment of technical solution provided by the invention,
1450 DEG C of platinum pieces lose 0.13-0.23g, and 1600 DEG C of platinum pieces lose 0.33-0.43g, the platinum phase with uncoated protective film
Than having excellent protective effect.
In the present invention in coating composition, zirconium oxide, silica crystallinity metal oxide in add glass ingredient
Material, while increasing yttrium oxide as stabilizer and its concrete content and being chosen so as to obtain coating composition and coating high temperature
When melting compound phase by cohesive action in conjunction with platinum, prevent or slow down the diffusion process of OH group, reduce it to matrix
Erosion, thus achieve the purpose that protect matrix, by its be coated on platinum channel when can preferably protect platinum material, simultaneously
Occur when can be effectively reduced glass manufacture because water decomposition causes bubble in glass.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (14)
1. a kind of coating composition, which is characterized in that on the basis of the total weight of the coating composition, the coating composition
Zirconium oxide containing 40-55 weight %, the silica of 20-40 weight %, the glass of 10-30 weight % and 2-15 weight %
Yttrium oxide.
2. coating composition according to claim 1, which is characterized in that using the total weight of the coating composition as base
Standard, the coating composition contain the zirconium oxide of 45-50 weight %, the silica of 25-35 weight %, 15-25 weight %
The yttrium oxide of glass and 2-7 weight %.
3. coating composition according to claim 1 or 2, which is characterized in that the average grain diameter of the zirconium oxide is 20-
150μm；
Preferably, the average grain diameter of the zirconium oxide is 50-100 μm.
4. coating composition according to claim 1 or 2, which is characterized in that the average grain diameter of the silica is 20-
150μm；
Preferably, the average grain diameter of the silica is 50-100 μm.
5. coating composition according to claim 1 or 2, which is characterized in that the silica is colloidal silicon dioxide
Or the mixture being made of colloidal silicon dioxide and silica；
Preferably, the amount ratio of colloidal silicon dioxide and silica is 1:1.5-5 in the mixture.
6. coating composition according to claim 1 or 2, which is characterized in that the average grain diameter of the glass is 20-80 μ
m；
Preferably, the average grain diameter of the glass is 30-60 μm.
7. coating composition according to claim 1 or 2, which is characterized in that the glass is selected from borosilicate glass, aluminium
One of silicate glass or aluminium borosilicate glass are a variety of；
Preferably, on the basis of the total weight of the borosilicate glass, the borosilicate glass includes: 65-70 weight %
SiO2, the B of 20-25 weight %2O3, the NaO of 1-5 weight %, the Al of 0.5-5 weight %2O3, the K of 0.2-2 weight %2O,
The ZnO of 0.5-4 weight %；
Preferably, on the basis of the total weight of the alumina silicate glass, the alumina silicate glass includes: 68-73 weight %
SiO2, the Al of 12-16 weight %2O3, the MgO of 2-6 weight %, the CaO of 3.5-5.5 weight %, 0.5-3.5 weight %'s
The BaO of SrO, 1-5 weight %, the ZnO of 0.5-4 weight %；
Preferably, on the basis of the total weight of the aluminium borosilicate glass, the aluminium borosilicate glass includes: 59-62 weight
Measure the SiO of %2, the B of 7-12 weight %2O3, the Al of 16-20 weight %2O3, the MgO of 0-8 weight %, the CaO of 0-5 weight % and
The SrO of 0-5 weight %.
8. coating composition according to claim 1 or 2, which is characterized in that the average grain diameter of the zirconium oxide is 30-
150μm；
Preferably, the average grain diameter of the zirconium oxide is 50-100 μm.
9. a kind of coating, which is characterized in that the coating contains coating composition described in any one of claim 1-8 and has
Machine binder.
10. coating according to claim 9, which is characterized in that relative to the coating composition of 100 parts by weight, institute
The dosage for stating organic binder is 0.5-10 parts by weight；
Preferably, the dosage of the organic binder is 1-5 parts by weight.
11. coating according to claim 9, which is characterized in that the organic binder is selected from methylcellulose, carboxymethyl
One of cellulose, hydroxyethyl cellulose, polyethylene glycol or phenolic resin are a variety of.
12. a kind of coating, which is characterized in that it after the coating of coating described in any one of claim 9-11 by will carry out
It is heat-treated.
13. a kind of guard method of platinum channel, which is characterized in that this approach includes the following steps,
1) the step of coating described in platinum channel surface coating claim 9-11；
2) the step of heat treatment forms protective coating is carried out to the coating of coating.
14. guard method according to claim 13, which is characterized in that the protective coating with a thickness of 500-3000 μ
m；
Preferably, the protective coating with a thickness of 1000-1500 μm.
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| CN112391594A (en) * | 2020-09-30 | 2021-02-23 | 科立视材料科技有限公司 | Platinum channel with zirconia protective coating and preparation method thereof |
| CN115490413A (en) * | 2022-07-28 | 2022-12-20 | 湖南兆湘光电高端装备研究院有限公司 | Method for protecting platinum channel |
| CN115872601A (en) * | 2022-10-31 | 2023-03-31 | 陕西彩虹工业智能科技有限公司 | Method for repairing platinum channel |
| CN115893860A (en) * | 2022-11-01 | 2023-04-04 | 深圳市新旗滨科技有限公司 | Rotating tube coating and preparation method thereof, and rotating tube and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391594A (en) * | 2020-09-30 | 2021-02-23 | 科立视材料科技有限公司 | Platinum channel with zirconia protective coating and preparation method thereof |
| CN115490413A (en) * | 2022-07-28 | 2022-12-20 | 湖南兆湘光电高端装备研究院有限公司 | Method for protecting platinum channel |
| CN115490413B (en) * | 2022-07-28 | 2024-01-05 | 湖南兆湘光电高端装备研究院有限公司 | Method for protecting platinum channel |
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| CN115893860A (en) * | 2022-11-01 | 2023-04-04 | 深圳市新旗滨科技有限公司 | Rotating tube coating and preparation method thereof, and rotating tube and preparation method thereof |
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