CN102603323A - Antioxidative coating for graphite product and preparation method and application thereof - Google Patents
Antioxidative coating for graphite product and preparation method and application thereof Download PDFInfo
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- CN102603323A CN102603323A CN2012100693186A CN201210069318A CN102603323A CN 102603323 A CN102603323 A CN 102603323A CN 2012100693186 A CN2012100693186 A CN 2012100693186A CN 201210069318 A CN201210069318 A CN 201210069318A CN 102603323 A CN102603323 A CN 102603323A
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- graphite product
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Abstract
The invention relates to an antioxidative coating for a graphite product and a preparation method and application thereof. The coating is prepared by uniformly mixing 10 to 12 weigh percent of glaze, 35 to 45 weight percent of bonding agent, 2 to 5 weight percent of stabilizer, 2 to 6 weight percent of additive and 20 to 32 weight percent of solvent. The coating is coated on a graphite product matrix in a brushing mode at normal temperature and the coating thickness is in the range of 0.1 to 3mm. Compared with the prior art, the antioxidative coating has simple process and all the operations are carried out at room temperature. Due to the addition of a small amount of rare earth oxide material with high performance, the oxidation resistance of the antioxidative coating is obviously promoted.
Description
Technical field
The present invention relates to a kind of graphite product antioxidant coating and method, specifically is a kind of efficient graphite product antioxidant coating and preparation and application.
Background technology
Graphite has many good performances, thereby obtains widespread use at industrial sectors such as metallurgical, mechanical, electric, chemical industry, weaving, national defence.Yet graphite also has its limitation; When under hot environment, using, graphite properties becomes vivaciously, combines to cause the oxidation of graphite with airborne oxygen; Oxidation causes a large amount of losses of graphite product for a long time, thereby causes its strength degradation to produce phenomenons such as graphite product fractures., graphite surface can obviously prolong its work-ing life after being handled.The preparation method of graphite ORC has plasma spraying method, chemical Vapor deposition process (CVD), pickling process, sol-gel method (sol-gel) harmony electrodip process etc. at present.Though it is better that methods such as employing plasma spraying obtain the ORC oxidation effectiveness, the facility investment that its preparation technology needs is huge, with high costs, is only applicable to high-end applications fields such as aviation and Nuclear power plants.Industry preparation technology of coating comparatively commonly used is, at first prepares antioxidant coating, takes then to apply or the method for flooding forms coating at matrix surface.The vacuum plasma spray coating method that the patent of invention " carbon or graphite body and the working method thereof that have supercoat " of Plasmainvent AG's application (CN85109647) is taked is with high costs, and technical equipment is complicated, is not suitable for applying at home.The patent of invention of Ceng Guisheng " graphite electrode anit-oxidizing coating and preparation technology " (200710052122.5) heat treatment process is complicated, and consumption time and electric energy are longer, and is not fine at high temperature (more than 1400 ℃) antioxidant effect.
Summary of the invention
The object of the invention is exactly for the defective that overcomes above-mentioned prior art existence a kind of graphite product antioxidant coating to be provided.
The object of the invention can be realized through following technical scheme: a kind of graphite product antioxidant coating; It is characterized in that; The raw material of this coating comprises following component and weight percent content: glaze 10-12wt%, wedding agent 35-45wt%, stablizer 2-5wt%, admixture 2-6wt%, solvent 20-32wt%
Described glaze is a Natural manganese dioxide, quicklime, sodium oxide, one or more in the potassium oxide.
Described wedding agent is a water glass, aluminium dihydrogen phosphate, one or more in the resol.
Described stablizer is a tripoly phosphate sodium STPP, trisodium phosphate, Sodium hexametaphosphate 99, one or more in the wooden sodium sulfonate.
Described admixture is a yttrium oxide, cerium oxide, one or more in the lanthanum trioxide.
Described solvent is a zero(ppm) water.
A kind of preparation method of graphite product antioxidant coating is characterized in that, this method is with glaze 10-12wt%, wedding agent 35-45wt%, and stablizer 2-5wt%, admixture 2-6wt%, solvent 20-32wt% mix, and promptly get coating.
The pH value of described coating is below 8.5.
A kind of application of graphite product antioxidant coating is characterized in that, with the mode of brushing coating is coated on the graphite product matrix at normal temperatures, and coating thickness is 0.1-0.3mm.
Described graphite matrix is placed on before brushing paint in the container of containing zero(ppm) water, and ultrasonic cleaning 1-3 time, every all over 5-10 minute, dry.
Compared with prior art, the present invention aims to provide a kind of graphite antioxidant coating and preparation technology thereof, after graphite surface is handled, can obviously prolong its work-ing life.Present method technology is simple, and all operations is ambient operation.Have high performance rare earth oxide material on a small quantity owing to added, antioxidant property of the present invention is significantly improved.Particularly evident in hot environment effect more than 1400 ℃.
Embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment 1
The graphite product of required processing, soak in filling with the container of zero(ppm) water, in ultrasonic cleaner, clean 1-3 time, every all over 5-10 minute.Naturally dry in the shade then.
Take by weighing each component according to following ratio: potassium oxide 12wt%, water glass 45wt%, 32wt% zero(ppm) water, 6wt% yttrium oxide, 5wt% tripoly phosphate sodium STPP.After stirring, adopt the method for brushing to be coated in the graphite product matrix surface, gauge control is about 0.3mm.Dry and to use.Graphite product is through after applying antioxidant coating, and calcining 3h oxidational losses only 0.86% in 1400 ℃ of still air stoves, and structure is constant basically.
Embodiment 2
The graphite product of required processing, soak in filling with the container of zero(ppm) water, in ultrasonic cleaner, clean 1-3 time, every all over 5-10 minute.Naturally dry in the shade then.
The 10wt% potassium oxide, water glass 38wt%, zero(ppm) water 27wt%, aluminium dihydrogen phosphate 20wt%, 3% cerium oxide, 2% wooden sodium sulfonate.After stirring, adopt the method for brushing to be coated in the graphite product matrix surface, gauge control is about 0.2mm.Dry and to use.Graphite product is through after applying antioxidant coating, and calcining 3h oxidational losses is that 1.2% structure is constant basically in 1400 ℃ of still air stoves.
Embodiment 3
The graphite product of required processing, soak in filling with the container of zero(ppm) water, in ultrasonic cleaner, clean 1-3 time, every all over 5-10 minute.Naturally dry in the shade then.
12wt% Natural manganese dioxide, aluminium dihydrogen phosphate 45wt%, trisodium phosphate 3wt%, lanthanum trioxide 8wt%, zero(ppm) water 32%.After stirring, the gained mixed solution adopts the phosphorus acid for adjusting pH value at 7-8.5, adopts the method for brushing to be coated in the graphite product matrix surface, and gauge control is about 0.1mm.Dry and to use.Graphite product is through after applying antioxidant coating, and calcining 3h oxidational losses is that 1.0% structure is constant basically in 1400 ℃ of still air stoves.
Embodiment 4
The graphite product of required processing, soak in filling with the container of zero(ppm) water, in ultrasonic cleaner, clean 1-3 time, every all over 5-10 minute.Naturally dry in the shade then.
The 12wt% quicklime, resol 45wt%, Sodium hexametaphosphate 99 5wt%, cerium oxide 6wt%, zero(ppm) water 32%.After stirring, the gained mixed solution adopts the phosphorus acid for adjusting pH value at 7-8.5, adopts the method for brushing to be coated in the graphite product matrix surface, and gauge control is about 0.3mm.Dry and to use.Graphite product is through after applying antioxidant coating, and calcining 3h oxidational losses is that 1.2% structure is constant basically in 1400 ℃ of still air stoves.
Certain steelworks; By stopping production one-level LF refining furnace the whole year weekly about 35 root graphite electrodes, the consumption calculating of refining treatment 165 stoves, adopt coating brushing graphite electrode anit-oxidizing technology of the present invention after; Can save 373 (153 tons) electrodes every year; 16,900 yuans of calculating of annual ultra-high power graphite electrode per ton can be saved 258.57 ten thousand yuans.
Claims (10)
1. a graphite product antioxidant coating is characterized in that, the raw material of this coating comprises following component and weight percent content: glaze 10-12wt%, wedding agent 35-45wt%, stablizer 2-5wt%, admixture 2-6wt%, solvent 20-32wt%
2. a kind of graphite product antioxidant coating according to claim 1 is characterized in that described glaze is a Natural manganese dioxide, quicklime, sodium oxide, one or more in the potassium oxide.
3. a kind of graphite product antioxidant coating according to claim 1 is characterized in that described wedding agent is a water glass, aluminium dihydrogen phosphate, one or more in the resol.
4. a kind of graphite product antioxidant coating according to claim 1 is characterized in that described stablizer is a tripoly phosphate sodium STPP, trisodium phosphate, Sodium hexametaphosphate 99, one or more in the wooden sodium sulfonate.
5. a kind of graphite product antioxidant coating according to claim 1 is characterized in that described admixture is a yttrium oxide, cerium oxide, one or more in the lanthanum trioxide.
6. a kind of graphite product antioxidant coating according to claim 1 is characterized in that described solvent is a zero(ppm) water.
7. the preparation method of a graphite product antioxidant coating as claimed in claim 1; It is characterized in that; This method is with glaze 10-12wt%, wedding agent 35-45wt%, and stablizer 2-5wt%, admixture 2-6wt%, solvent 20-32wt% mix, and promptly get coating.
8. the preparation method of a kind of graphite product antioxidant coating according to claim 7 is characterized in that, the pH value of described coating is below 8.5.
9. the application of a graphite product antioxidant coating as claimed in claim 1 is characterized in that, with the mode of brushing coating is coated on the graphite product matrix at normal temperatures, and coating thickness is 0.1-0.3mm.
10. the application of a kind of graphite product antioxidant coating according to claim 9 is characterized in that, described graphite matrix is placed on before brushing paint in the container of containing zero(ppm) water, ultrasonic cleaning 1-3 time, and every all over 5-10 minute, dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100693186A CN102603323A (en) | 2012-03-15 | 2012-03-15 | Antioxidative coating for graphite product and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100693186A CN102603323A (en) | 2012-03-15 | 2012-03-15 | Antioxidative coating for graphite product and preparation method and application thereof |
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| CN102603323A true CN102603323A (en) | 2012-07-25 |
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| CN2012100693186A Pending CN102603323A (en) | 2012-03-15 | 2012-03-15 | Antioxidative coating for graphite product and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106699182A (en) * | 2016-11-30 | 2017-05-24 | 中国科学院山西煤炭化学研究所 | High-temperature-oxidation-resistant high-temperature-strong-alkali-resistant graphite product and preparation method thereof |
| CN109183422A (en) * | 2018-07-25 | 2019-01-11 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of antioxidant coating carbon fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1006465B (en) * | 1987-12-26 | 1990-01-17 | 冶金工业部洛阳耐火材料研究所 | Antioxidation coatings containing plumbago refractory |
| CN1506410A (en) * | 2002-12-10 | 2004-06-23 | 上海纯青实业有限公司 | New-type antioxidant paint |
| CN101891398A (en) * | 2010-07-15 | 2010-11-24 | 上海大学 | Method for preparing high-temperature anti-oxidation coating with high infrared radiance |
-
2012
- 2012-03-15 CN CN2012100693186A patent/CN102603323A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1006465B (en) * | 1987-12-26 | 1990-01-17 | 冶金工业部洛阳耐火材料研究所 | Antioxidation coatings containing plumbago refractory |
| CN1506410A (en) * | 2002-12-10 | 2004-06-23 | 上海纯青实业有限公司 | New-type antioxidant paint |
| CN101891398A (en) * | 2010-07-15 | 2010-11-24 | 上海大学 | Method for preparing high-temperature anti-oxidation coating with high infrared radiance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106699182A (en) * | 2016-11-30 | 2017-05-24 | 中国科学院山西煤炭化学研究所 | High-temperature-oxidation-resistant high-temperature-strong-alkali-resistant graphite product and preparation method thereof |
| CN109183422A (en) * | 2018-07-25 | 2019-01-11 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of antioxidant coating carbon fiber |
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Application publication date: 20120725 |