CN101343193B - High-temperature anti-oxidation porous ceramic coating and preparation method thereof - Google Patents
High-temperature anti-oxidation porous ceramic coating and preparation method thereof Download PDFInfo
- Publication number
- CN101343193B CN101343193B CN2008100588179A CN200810058817A CN101343193B CN 101343193 B CN101343193 B CN 101343193B CN 2008100588179 A CN2008100588179 A CN 2008100588179A CN 200810058817 A CN200810058817 A CN 200810058817A CN 101343193 B CN101343193 B CN 101343193B
- Authority
- CN
- China
- Prior art keywords
- phosphoric acid
- percent
- porous ceramic
- temperature
- ceramic paint
- 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.)
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Links
- 238000002360 preparation method Methods 0.000 title claims description 8
- 238000005524 ceramic coating Methods 0.000 title description 8
- 230000003064 anti-oxidating effect Effects 0.000 title description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000003973 paint Substances 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims abstract description 17
- 239000002694 phosphate binding agent Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 8
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims abstract description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 30
- 230000003647 oxidation Effects 0.000 claims description 22
- 238000007254 oxidation reaction Methods 0.000 claims description 22
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 4
- 235000015110 jellies Nutrition 0.000 claims description 3
- 239000008274 jelly Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 239000011230 binding agent Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910001679 gibbsite Inorganic materials 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 229910018626 Al(OH) Inorganic materials 0.000 description 5
- 244000248349 Citrus limon Species 0.000 description 4
- 235000005979 Citrus limon Nutrition 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005575 poly(amic acid) Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides a high-temperature oxidation-resistance porous ceramic paint, which is characterized in that the paint comprises the following materials, in weight percent: 8 to 25 percent of Al(OH)3, 30 to 60 percent of H3PO4, 0.1 to 0.6 percent of MgO, 1.0 to 2.0 percent of SiO2, 1.5 to 5.5 percent of H3BO3, 6 to 30 percent of Al2O3, 0 to 4.0 percent of ZnO, 10 to 35 percent of H2O, and 0 to 5 percent of dispersing agent. The acquired high-temperature oxidation-resistance porous ceramic paint can evaporate out constitution water in an aluminum phosphate binder under high temperature, thereby forming a plurality of holes, and the porous ceramic paint has functions of heat preservation, heat insulation and abatement of noise, and contains no organics and can adjust the sizes and distribution of air holes through the compositions of the binder and slurry, and the method provided in the invention has advantages of simple process, convenient operation, energy saving, non pollutant, low investment and low running cost.
Description
Technical field
The present invention relates to a kind of ceramic coating and preparation method thereof, belong to the high-temperature oxidation-resistant material technical field.
Background technology
In the Aluminum Electrolysis Production process, carbon anode consumption comprises electrochemistry consumption, chemical depletion and machinery consumption etc., wherein by carbon anode and CO
2And O
2The caused chemical depletion of oxidizing reaction that takes place is the main reason of anode luxus consumption.In the production process of large-scale pre-baked aluminum electrolysis cell, adopt processing method usually, in the hope of reducing the anodic oxidation at anode top capping oxidation aluminium protective layer.But, because there are deficiencies such as tissue looseness, hole be big, inhomogeneous in protective layer of alumina, so it is limited to reduce the effect of the anode luxus consumption that causes because of anodic oxidation.The producer that also has in addition utilizes sol-gel processing, form one deck alumina sol anti-oxidation composite coating on carbon anode surface, though this method has obtained antioxidant effect preferably, but because of the complicated process of preparation of coating, and cost is higher, and fails to be applied.Therefore, be necessary prior art is improved.
Summary of the invention
For solving the prior art above shortcomings, provide a kind of is binding agent with the aluminum phosphate to purpose of the present invention, is high-temperature oxidation resistant porous ceramic paint of main stuffing and preparation method thereof with the aluminum oxide just.
The present invention finishes by following technical proposal: a kind of high-temperature oxidation resistant porous ceramic paint is characterized in that it is made up of following raw materials by weight percentage:
Al(OH)
3 8～25％
H
3PO
4 30～60％
MgO 0.1～0.6％
SiO
2 1.0～2.0％
H
3BO
3 1.5～5.5％
Al
2O
3 6～30％
ZnO 0～4.0％
H2O1 0～35％
Dispersion agent 0～5%.
Described phosphoric acid employing concentration is 85% analytical pure phosphoric acid, perhaps technical pure phosphoric acid.
Described dispersion agent is a kind of in lemon three sour ammoniums or the poly amic acid or two kinds.
The effect of described main raw material is: Al
2O
3Physical strength height, hardness height, anticorrosive and chemical stability good are so be major ingredient with it; MgO can obviously shorten the set time of coating as solidifying agent; SiO
2Can make coating have the superior acid resistance energy, and the fusing point of coating is significantly reduced, be vitreousness, improve coating compactness; ZnO is a kind of fusing assistant, forms low melting point liquid phase sintering material at crystal boundary during thermal treatment, plays binding agent, eliminates pore and promotes the coating densification.
Described high-temperature oxidation resistant porous ceramic paint prepares by following method: with following raw materials by weight percentage:
Al(OH)
3 8～25％
H
3PO
4 30～60％
MgO 0.1～0.6％
SiO
2 1.0～2.0％
H
3BO
3 1.5～5.5％
Al
2O
3 6～30％
ZnO 0～4.0％
H
2O 10～35％
Dispersion agent 0～5%
Through the following step:
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, be heated to boiling, in ebullient phosphoric acid, add aluminium hydroxide Al (OH)
3Powder stirred 5～30 minutes under ℃ temperature of room temperature～150, made aluminum phosphate binder;
(2) with Al
2O
3, SiO
2, H
3BO
3, ZnO, MgO, water directly joins in the aluminum phosphate binder of step (1), under ℃ temperature of room temperature～150, stirred 10～30 minutes, adjust viscosity to 0.1～20Pas, pH value to 1.0～3.0 form stable jelly, just make high-temperature oxidation resistant porous ceramic paint;
Perhaps
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, be heated to boiling, in ebullient phosphoric acid, add aluminium hydroxide Al (OH)
3Powder stirred 5～30 minutes under ℃ temperature of room temperature～150, made aluminum phosphate binder;
(2) with Al
2O
3, SiO
2, H
3BO
3, after ZnO, MgO and the dispersant, add water and make uniform slurry;
(3) slurry with step (2) joins in the aluminum phosphate binder of step (1), adjusts viscosity to 0.1～20Pas, pH value to 1.0～3.0, gets high-temperature oxidation resistant porous ceramic paint.
The present invention has following advantage and effect: adopt the high-temperature oxidation resistant porous ceramic paint of such scheme preparation at high temperature the water of constitution in the aluminum phosphate binder can be evaporated, thereby form porous.After being coated in the coated article surface with this porous ceramic paint, can form have insulation, heat insulation and abate the noise the effect coating, the composition that this high-temperature oxidation resistant porous ceramic paint does not comprise organism and composition that can be by binding agent and slip is regulated the size and the distribution of pore, in addition, its technology of method provided by the invention is simple, and is easy to operate, energy-conservation, do not discharge pollutants, invest for a short time, running cost is low.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1
Get material by following prescription:
Form gram
Al(OH)
3 12
H
3PO
4 50
MgO 0.30
SiO
2 1.20
H
3BO
3 3.5
Al
2O
3 9
ZnO 2
Water 20
Dispersion agent lemon three sour ammoniums 2
Through following method:
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, pour clean beaker into, heated and stirred after the phosphoric acid boiling, slowly adds aluminium hydroxide Al (OH) in the beaker that phosphoric acid is housed
3Powder stirs under 110 ℃ of temperature and made aluminum phosphate binder in 10 minutes.
(2) with Al
2O
3, SiO
2, H
3BO
3, ZnO, MgO be with after dispersion agent lemon three sour ammoniums mix, add entry and be prepared into uniform slurry;
(3) slurry with step (2) joins in the aluminum phosphate binder of step (1), adjusts viscosity to 0.1Pas and pH value to 3.0, obtains high-temperature oxidation resistant porous ceramic paint;
(4) with the ceramic coating brushing of step (3) behind the coated article surface, after in room temperature or loft drier, solidifying, promptly form the high-temperature oxidation resistant porous ceramic coating on the coated article surface.
Embodiment 2
Get material by following prescription:
Form gram
Al(OH)
3 24
H
3PO
4 30
MgO 0.6
SiO
2 2
H
3BO
3 5.4
Al
2O
3 20
Water 18
Through following method:
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, pour clean beaker into, heated and stirred; After the phosphoric acid boiling, in the beaker that phosphoric acid is housed, slowly add aluminium hydroxide Al (OH)
3Powder stirs under the room temperature and made aluminum phosphate binder in 30 minutes;
(2) with Al
2O
3, H
3BO
3, MgO, SiO
2, water directly joins in the aluminum phosphate binder of step (1), at room temperature, stirs 30 minutes, adjusts viscosity to 20Pas, pH value to 1.0 forms stable jelly, just makes high-temperature oxidation resistant porous ceramic paint;
(3) ceramic coating with step (2) is applied to by the thing surface, after solidifying in room temperature or loft drier, promptly forms the high-temperature oxidation resistant porous ceramic coating on the coated article surface.
Embodiment 3
Get material by following prescription:
Form gram
Al(OH)
3 8
H
3PO
4 40
MgO 0.1
SiO
2 1
H
3BO
3 1.9
Al
2O
3 30
ZnO 4
10
Dispersion agent lemon three sour ammoniums 5
Through following method:
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, pour clean beaker into, heated and stirred after the phosphoric acid boiling, slowly adds aluminium hydroxide Al (OH) in the beaker that phosphoric acid is housed
3Powder stirs under 80 ℃ of temperature and made aluminum phosphate binder in 20 minutes.
(2) with Al
2O
3, SiO
2, H
3BO
3, ZnO, MgO be with after water mixes, add the dispersion agent poly amic acid and be prepared into uniform slurry;
(3) slurry with step (2) joins in the aluminum phosphate binder of step (1), adjusts viscosity to 10Pas and pH value to 2.0, obtains high-temperature oxidation resistant porous ceramic paint;
(4) with the ceramic coating brushing of step (3) behind the coated article surface, after in room temperature or loft drier, solidifying, promptly form the high-temperature oxidation resistant porous ceramic coating on the coated article surface.
Claims (2)
1. the preparation method of a high-temperature oxidation resistant porous ceramic paint is characterized in that following raw materials by weight percentage:
Through the following step:
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, be heated to boiling, in ebullient phosphoric acid, add aluminium hydroxide Al (OH)
3Powder stirred 5～30 minutes under ℃ temperature of room temperature～150, made aluminum phosphate binder;
(2) with Al
2O
3, SiO
2, H
3BO
3, ZnO, MgO, water directly joins in the aluminum phosphate binder of step (1), under ℃ temperature of room temperature～150, stirred 10～30 minutes, adjust viscosity to 0.1～20Pas, pH value to 1.0～3.0 form stable jelly, just make high-temperature oxidation resistant porous ceramic paint;
Perhaps
(1) 85% strong phosphoric acid is diluted to 45% phosphoric acid after, be heated to boiling, in ebullient phosphoric acid, add aluminium hydroxide Al (OH)
3Powder stirred 5～30 minutes under ℃ temperature of room temperature～150, made aluminum phosphate binder;
(2) with Al
2O
3, SiO
2, H
3BO
3, ZnO, MgO be with after water mixes, add dispersion agent and make uniform slurry;
(3) slurry with step (2) joins in the aluminum phosphate binder of step (1), adjusts viscosity to 0.1～20Pas, pH value to 1.0～3.0, gets high-temperature oxidation resistant porous ceramic paint.
2. the preparation method of high-temperature oxidation resistant porous ceramic paint according to claim 1 is characterized in that described phosphoric acid employing concentration is 85% analytical pure phosphoric acid, perhaps technical pure phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100588179A CN101343193B (en) | 2008-08-15 | 2008-08-15 | High-temperature anti-oxidation porous ceramic coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100588179A CN101343193B (en) | 2008-08-15 | 2008-08-15 | High-temperature anti-oxidation porous ceramic coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101343193A CN101343193A (en) | 2009-01-14 |
| CN101343193B true CN101343193B (en) | 2011-07-06 |
Family
ID=40245333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100588179A Expired - Fee Related CN101343193B (en) | 2008-08-15 | 2008-08-15 | High-temperature anti-oxidation porous ceramic coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101343193B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167589B (en) * | 2011-01-12 | 2013-08-14 | 辽宁大学 | Boron carbide ceramic coating slurry and application thereof |
| CN103642284A (en) * | 2013-12-12 | 2014-03-19 | 江西恒大高新技术股份有限公司 | High-temperature anti-oxidation coating of high-temperature graphite electrode |
| CN105924216B (en) * | 2016-05-04 | 2018-03-30 | 山东理工大学 | A kind of preparation method of light porous aluminum phosphate-Zirconium silicate ceramic ball |
| CN105924217B (en) * | 2016-05-04 | 2018-03-30 | 山东理工大学 | A kind of preparation method of light porous magnesium phosphate-aluminum phosphate Ceramic Balls |
| CN105967736B (en) * | 2016-05-04 | 2018-06-29 | 山东理工大学 | A kind of preparation method of light porous aluminum phosphate-silicon nitride ceramic ball |
| CN105924215B (en) * | 2016-05-04 | 2018-03-30 | 山东理工大学 | A kind of preparation method of light porous aluminum phosphate sillimanite Ceramic Balls |
| CN107382379A (en) * | 2017-07-28 | 2017-11-24 | 北京玻钢院复合材料有限公司 | The preparation method of ceramic fibre with aluminum phosphate coatings |
| CN116462502A (en) * | 2022-10-04 | 2023-07-21 | 汶川县神州锆业科技有限公司 | High-temperature-resistant and electric corrosion-resistant method for special equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035835A (en) * | 1988-03-16 | 1989-09-27 | 中国科学院化工冶金研究所 | Antioxidant protective paint for carbon product |
| CN1840585A (en) * | 2005-03-30 | 2006-10-04 | 上海衡峰氟碳材料有限公司 | Inorganic ceramic paint |
-
2008
- 2008-08-15 CN CN2008100588179A patent/CN101343193B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035835A (en) * | 1988-03-16 | 1989-09-27 | 中国科学院化工冶金研究所 | Antioxidant protective paint for carbon product |
| CN1840585A (en) * | 2005-03-30 | 2006-10-04 | 上海衡峰氟碳材料有限公司 | Inorganic ceramic paint |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-129386A 2002.05.09 |
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| Publication number | Publication date |
|---|---|
| CN101343193A (en) | 2009-01-14 |
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