CN111944334A - Nano metal ceramic coating - Google Patents
Nano metal ceramic coating Download PDFInfo
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- CN111944334A CN111944334A CN201910396145.0A CN201910396145A CN111944334A CN 111944334 A CN111944334 A CN 111944334A CN 201910396145 A CN201910396145 A CN 201910396145A CN 111944334 A CN111944334 A CN 111944334A
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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
- 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
- C09D5/10—Anti-corrosive paints containing metal dust
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention provides a nano metal ceramic coating, which relates to the field of environment-friendly coatings and is prepared from the following raw materials in parts by weight: 20-45 parts of nano ceramic filler, 20-45 parts of binder, 5-15 parts of nano metal powder and 10-20 parts of water, and compared with the prior art, the nano ceramic filler has excellent corrosion resistance; the blackness is high, and the energy-saving effect is good; the surface self-lubricating effect is good, and the stain resistance is high; is not easy to fall off and crack; the heat transfer of the four tubes of the boiler is not influenced.
Description
Technical Field
The invention relates to the field of environment-friendly coatings, and particularly relates to a nano metal ceramic coating.
Background
In order to solve the flue gas corrosion and ash powder abrasion of four pipes of a boiler, the technology mainly adopted at present is to thermally spray a metal coating, and metal is thermally melted and sprayed on the surface of equipment through professional equipment, but the technology has the following defects that firstly, the coating is not compact, the permeability of corrosive gases such as hydrogen sulfide in flue gas is strong, and the corrosive gases can permeate into the surface of the equipment through gaps of the thermally sprayed metal coating to carry out strong corrosion on the equipment; secondly, the surface of the coating is rough, the surface area is large, ash powder in the flue gas and generated coke nodules are easy to adhere to form thick accumulated ash or coke, the heat exchange efficiency of the equipment is influenced, and the long-term adhesion of the coke nodules is easy to cause molten salt corrosion and is a main reason for pipe explosion of the equipment; thirdly, the blackness of the metal material is relatively low, the heating uniformity of the boiler cannot be effectively improved, and the energy-saving effect is basically not achieved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a nano metal ceramic coating which has excellent corrosion resistance; the blackness is high, and the energy-saving effect is good; the surface self-lubricating effect is good, and the stain resistance is high; is not easy to fall off and crack; the heat transfer of the four tubes of the boiler is not influenced.
The invention is realized by the following technical scheme:
a nano metal ceramic coating is prepared from the following raw materials in parts by weight: 20-45 parts of nano ceramic filler, 20-45 parts of binder, 5-15 parts of nano metal powder and 10-20 parts of water.
Further, 20-45 parts of nano ceramic filler are prepared from the following raw materials in parts by weight: 1-8 parts of nano silicon nitride, 2-10 parts of hexagonal boron nitride, 3-10 parts of nano aluminum nitride, 0.5-5 parts of active magnesium oxide, 1-10 parts of molybdenum modified zirconia, 1-10 parts of nano silicon carbide, 0.5-1.5 parts of cerium oxide, 2-10 parts of chromium oxide, 1-8 parts of molybdenum disulfide and 1-5 parts of nano tungsten carbide.
Further, 5-15 parts of nano metal powder are prepared from the following raw materials in parts by weight: 1-10 parts of nickel powder and 1-5 parts of titanium powder.
Further, 20-45 parts of binder is prepared from the following raw materials in parts by weight: 3-10 parts of organic modified adhesive and 15-35 parts of inorganic nano modified adhesive.
Further, the organic adhesive is a high-temperature resistant emulsion capable of self-curing at normal temperature.
Further, the inorganic nano modified adhesive comprises at least one of zirconium sol, silica sol, aluminum sol and lithium hydroxide, and if two or more than two kinds of the inorganic nano modified adhesive are mixed, the inorganic nano modified adhesive is prepared by reaction in a high-temperature reaction kettle, and the reaction temperature is 75-85 ℃.
Preferably, the nano metal ceramic coating is prepared from the following raw materials in percentage by weight: 5.35 parts of nano silicon nitride, 10 parts of hexagonal boron nitride, 3.55 parts of nano aluminum nitride, 0.73 part of active magnesium oxide, 5.2 parts of molybdenum modified zirconia, 3.7 parts of nano silicon carbide, 1.33 parts of cerium oxide, 4.2 parts of chromium oxide, 2 parts of molybdenum disulfide, 4.14 parts of nano tungsten carbide, 3.72 parts of nickel powder, 1.58 parts of titanium powder, 3.7 parts of high-temperature resistant emulsion, 36.1 parts of inorganic nano modified adhesive and 14.7 parts of water, wherein 36.1 parts of inorganic nano modified adhesive is prepared by reacting 12.6 parts of zirconium sol, 17.3 parts of silica sol, 4.5 parts of aluminum sol and 1.7 parts of lithium hydroxide in a high-temperature reaction kettle, and the reaction temperature is 78 ℃.
The invention utilizes the composition of the metal phase and the ceramic phase, thereby improving the high-temperature strength, the impact resistance, the thermal shock resistance and the like of the whole metal ceramic coating. Oxides generated by the metal nickel and the metal titanium at high temperature and an oxide layer generated on the surface of the iron metal matrix form spinel, so that the thermal shock resistance of the coating is obviously improved. The magnesium oxide in the ceramic filler not only promotes the growth of spinel, but also forms MgAl (SiO3)4 crystals at the interface of the coating and the matrix, thereby greatly improving the adhesive force of the coating. The composite use of the ceramic fillers such as silicon nitride, boron nitride, aluminum nitride, tungsten carbide and the like greatly improves the hardness, the wear resistance and the anti-contamination and slagging performance of the metal ceramic coating. The nano inorganic material has high blackness, and the formed coating has high radiance and good energy-saving effect. The performance of the metal ceramic composite material is closely related to the microstructure thereof, the more ideal microstructure is that a metal phase forms a continuous film, finely dispersed and uniformly distributed ceramic particles are wrapped, the ceramic phase can be in an island shape, the microstructure enables the stress (mechanical stress and thermal stress) applied to the finely dispersed brittle ceramic phase to be well transferred to the uniform metal continuous phase, so that the stress is dispersed, and meanwhile, the metal phase is reinforced by wrapping the metal phase on the ceramic phase, so that the high-temperature strength, impact resistance, thermal shock resistance and the like of the whole metal ceramic material are improved. Molybdenum disulfide with self-lubricating effect is added, so that the self-lubricating property of the coating is obviously improved, and the wear resistance is enhanced.
Compared with the prior art, the invention has the following advantages: the nano inorganic material and the nano inorganic adhesive form a compact coating film through chemical reaction at high temperature, and the coating film has high adhesive force and good corrosion resistance. The nano metal material is added as a modifier, so that the flexibility of the coating is improved, the thermal expansion coefficient of the coating can be effectively improved, high-low temperature thermal shock can be accepted, and the coating is prevented from falling off and cracking. The selected nano inorganic material has high blackness, and the formed coating has high radiance and good energy-saving effect. The coating film has lower surface energy and self-lubricating effect in a high-temperature environment, and has higher wear resistance and anti-contamination performance. The coating film is subjected to chemical reaction along with the rise of the furnace temperature to form ceramic, the heat conductivity is high, and the heat transfer of four pipes of the boiler is not influenced.
Detailed Description
Example 1:
a nano metal ceramic coating comprises the following raw materials in percentage by weight: 5.35 parts of nano silicon nitride, 10 parts of hexagonal boron nitride, 3.55 parts of nano aluminum nitride, 0.73 part of active magnesium oxide, 5.2 parts of molybdenum modified zirconia, 3.7 parts of nano silicon carbide, 1.33 parts of cerium oxide, 4.2 parts of chromium oxide, 2 parts of molybdenum disulfide, 4.14 parts of nano tungsten carbide, 3.72 parts of nickel powder, 1.58 parts of titanium powder, 3.7 parts of high-temperature resistant emulsion, 36.1 parts of inorganic nano modified adhesive and 14.7 parts of water, wherein 36.1 parts of inorganic nano modified adhesive is prepared by reacting 12.6 parts of zirconium sol, 17.3 parts of silica sol, 4.5 parts of aluminum sol and 1.7 parts of lithium hydroxide in a high-temperature reaction kettle, and the reaction temperature is 78 ℃.
Example 2:
a nano metal ceramic coating comprises the following raw materials in percentage by weight: 5.5 parts of nano silicon nitride, 10 parts of hexagonal boron nitride, 3.5 parts of nano aluminum nitride, 1 part of active magnesium oxide, 5 parts of molybdenum modified zirconia, 5 parts of nano silicon carbide, 1 part of cerium oxide, 4.2 parts of chromium oxide, 2 parts of molybdenum disulfide, 4.5 parts of nano tungsten carbide, 3.5 parts of nickel powder, 1.8 parts of titanium powder, 3.5 parts of high-temperature resistant emulsion, 35 parts of inorganic nano modified adhesive and 14.5 parts of water, wherein the inorganic nano modified adhesive is prepared by reacting 15 parts of zirconium sol and 20 parts of silica sol in a high-temperature reaction kettle, and the reaction temperature is 75 ℃.
Example 3:
a nano metal ceramic coating comprises the following raw materials in percentage by weight: 2 parts of nano silicon nitride, 10 parts of hexagonal boron nitride, 5 parts of nano aluminum nitride, 5 parts of active magnesium oxide, 10 parts of molybdenum modified zirconia, 10 parts of nano silicon carbide, 1 part of cerium oxide, 5 parts of chromium oxide, 5 parts of molybdenum disulfide, 3 parts of nano tungsten carbide, 5 parts of nickel powder, 2 parts of titanium powder, 5 parts of high-temperature resistant emulsion, 20 parts of silica sol and 12 parts of water.
The above embodiments are merely preferred embodiments, which should not limit the scope of the present invention, and all variations made according to the principle of the present invention should be covered within the scope of the present invention.
Claims (8)
1. The nano metal ceramic coating is characterized by being prepared from the following raw materials in parts by weight: 20-45 parts of nano ceramic filler, 20-45 parts of binder, 5-15 parts of nano metal powder and 10-20 parts of water.
2. The nano cermet coating material of claim 1, wherein the nano ceramic filler is prepared from 20-45 parts by weight of the following raw materials: 1-8 parts of nano silicon nitride, 2-10 parts of hexagonal boron nitride, 3-10 parts of nano aluminum nitride, 0.5-5 parts of active magnesium oxide, 1-10 parts of molybdenum modified zirconia, 1-10 parts of nano silicon carbide, 0.5-1.5 parts of cerium oxide, 2-10 parts of chromium oxide, 1-8 parts of molybdenum disulfide and 1-5 parts of nano tungsten carbide.
3. The nano metal ceramic coating as claimed in claim 1, wherein the nano metal powder is prepared from the following raw materials in parts by weight in 5-15 parts: 1-10 parts of nickel powder and 1-5 parts of titanium powder.
4. The nano metal ceramic coating as claimed in claim 1, wherein the binder is prepared from 20-45 parts by weight of the following raw materials: 3-10 parts of organic modified adhesive and 15-35 parts of inorganic nano modified adhesive.
5. The binder as claimed in claim 4, wherein the organic binder is a high temperature emulsion capable of self-curing at room temperature.
6. The binder of claim 4 wherein the inorganic nano-modified binder comprises at least one of zirconium sol, silica sol, aluminum sol and lithium hydroxide.
7. The inorganic nano-modified adhesive as claimed in claim 6, wherein the adhesive is prepared by mixing two or more of zirconium sol, silica sol, aluminum sol and lithium hydroxide, and reacting in a high-temperature reaction kettle at 75-85 ℃.
8. The nano metal ceramic coating as claimed in claims 1 to 7, wherein the raw materials comprise the following raw materials in parts by weight: 5.35 parts of nano silicon nitride, 10 parts of hexagonal boron nitride, 3.55 parts of nano aluminum nitride, 0.73 part of active magnesium oxide, 5.2 parts of molybdenum modified zirconia, 3.7 parts of nano silicon carbide, 1.33 parts of cerium oxide, 4.2 parts of chromium oxide, 2 parts of molybdenum disulfide, 4.14 parts of nano tungsten carbide, 3.72 parts of nickel powder, 1.58 parts of titanium powder, 3.7 parts of high-temperature resistant emulsion, 36.1 parts of inorganic nano modified adhesive and 14.7 parts of water, wherein 36.1 parts of inorganic nano modified adhesive is prepared by reacting 12.6 parts of zirconium sol, 17.3 parts of silica sol, 4.5 parts of aluminum sol and 1.7 parts of lithium hydroxide in a high-temperature reaction kettle, and the reaction temperature is 78 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396145.0A CN111944334A (en) | 2019-05-14 | 2019-05-14 | Nano metal ceramic coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396145.0A CN111944334A (en) | 2019-05-14 | 2019-05-14 | Nano metal ceramic coating |
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| CN111944334A true CN111944334A (en) | 2020-11-17 |
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| CN201910396145.0A Pending CN111944334A (en) | 2019-05-14 | 2019-05-14 | Nano metal ceramic coating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063205A (en) * | 2020-09-22 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Inorganic corrosion-resistant coating and preparation method thereof |
| CN115160835A (en) * | 2022-07-27 | 2022-10-11 | 西安热工研究院有限公司 | Micro-nano multi-scale anti-coking and anti-wear coating, composite material and preparation method thereof |
| CN115403942A (en) * | 2022-08-15 | 2022-11-29 | 广东富多新材料股份有限公司 | Oleophobic and hydrophobic inorganic amphiphobic ceramic coating and preparation method and application thereof |
| CN115595024A (en) * | 2021-07-08 | 2023-01-13 | 武汉苏泊尔炊具有限公司（Cn） | Composite non-stick coating, preparation method thereof and cooking utensil |
Citations (3)
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| JPS63199843A (en) * | 1987-02-13 | 1988-08-18 | Natl Res Inst For Metals | Composite molded body of molybdenum or its alloy and zirconia and its production |
| CN105176347A (en) * | 2015-09-08 | 2015-12-23 | 天长市银狐漆业有限公司 | Weather-resistant shock-resistant anticorrosive coating |
| CN109136716A (en) * | 2018-10-16 | 2019-01-04 | 北京隆源纳欣科技有限公司 | A kind of nanometer metal ceramic composite coating and preparation method thereof |
-
2019
- 2019-05-14 CN CN201910396145.0A patent/CN111944334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199843A (en) * | 1987-02-13 | 1988-08-18 | Natl Res Inst For Metals | Composite molded body of molybdenum or its alloy and zirconia and its production |
| CN105176347A (en) * | 2015-09-08 | 2015-12-23 | 天长市银狐漆业有限公司 | Weather-resistant shock-resistant anticorrosive coating |
| CN109136716A (en) * | 2018-10-16 | 2019-01-04 | 北京隆源纳欣科技有限公司 | A kind of nanometer metal ceramic composite coating and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063205A (en) * | 2020-09-22 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Inorganic corrosion-resistant coating and preparation method thereof |
| CN112063205B (en) * | 2020-09-22 | 2021-11-16 | 中国南方电网有限责任公司超高压输电公司柳州局 | Inorganic corrosion-resistant coating and preparation method thereof |
| CN115595024A (en) * | 2021-07-08 | 2023-01-13 | 武汉苏泊尔炊具有限公司（Cn） | Composite non-stick coating, preparation method thereof and cooking utensil |
| CN115595024B (en) * | 2021-07-08 | 2023-10-31 | 武汉苏泊尔炊具有限公司 | Composite non-stick coating, preparation method thereof and cooking utensil |
| CN115160835A (en) * | 2022-07-27 | 2022-10-11 | 西安热工研究院有限公司 | Micro-nano multi-scale anti-coking and anti-wear coating, composite material and preparation method thereof |
| CN115403942A (en) * | 2022-08-15 | 2022-11-29 | 广东富多新材料股份有限公司 | Oleophobic and hydrophobic inorganic amphiphobic ceramic coating and preparation method and application thereof |
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Application publication date: 20201117 |