CN101760055B - Inorganic high-temperature resistant and antistatic coating - Google Patents
Inorganic high-temperature resistant and antistatic coating Download PDFInfo
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- CN101760055B CN101760055B CN 200910219418 CN200910219418A CN101760055B CN 101760055 B CN101760055 B CN 101760055B CN 200910219418 CN200910219418 CN 200910219418 CN 200910219418 A CN200910219418 A CN 200910219418A CN 101760055 B CN101760055 B CN 101760055B
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- aluminium
- zinc oxide
- phosphoric acid
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- titanate coupling
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Abstract
The present invention discloses an inorganic high-temperature resistant and antistatic coating. The coating is mainly prepared from constituents of the following contents (percentages by weight): 30 to 60% of phosphate, 5 to 25% of silicasol, 2 to 10% of boric acid, 25 to 45% of water, 2 to 5% of titanate coupling agent, 8 to 18% of conductive mica powder and 5 to 10% of aluminium powder mixed with zinc oxide. Dihydric phosphate water solution is prepared from the following substances at least, and the phosphate consists of one or several of aluminium dihydrogen phosphate, aluminium hydrogen phosphate, magnesium dihydrogen phosphate, magnesium hydrogen phosphate, zinc dihydrogen phosphate and zinc hydrogen phosphate. The ratio of P to M (M refers to metal elements) in the phosphate is from 1.2 to 2.6. The conductive mica powder and the aluminium powder mixed with zinc oxide are processed by the titanate coupling agent before being added to a base material.
Description
Technical field
The present invention relates to inorganic high-temperature resistant and antistatic coating.The main material that uses in the hot environment of giving provides certain static resistance.
Background technology
High-speed aircraft produces a large amount of heat in the flight of air high speed and air friction, and material surface produces a large amount of static simultaneously, if untimely elimination produces discharge and brings very big harm.Deterioration at high temperature takes place in traditional organic coating, and intensity reduces, and generation is peeled off, and can not effectively protect high-speed aircraft.The present invention develops a kind of inorganic high-temperature resistant and antistatic coating exactly and addresses this problem.
Summary of the invention
Purpose of the present invention provides a kind of novel inorganic high-temperature resistant and antistatic coating at the antistatic property of material under the hot environment, has improved the antistatic property of material, has reduced the harm that static brings, and provides certain high temperature resistant protection for material simultaneously.
Above-mentioned purpose of the present invention is achieved through the following technical solutions: this coating main ingredient has phosphoric acid salt, silicon sol, boric acid, water, titanate coupling agent, conductive mica powder, aluminium-doped zinc oxide powder etc.Wherein phosphate content is 30～60% (weight contents, together following), and boric acid content is 2～10%, and water-content is 25～45%, the content 5～25% of silicon sol, titanate coupling agent content is 2～5%, and conductive mica powder content is 8～18%, and the aluminium-doped zinc oxide powder content is 5～10%.
The phosphoric acid salt base-material is prepared from by following material at least among the present invention:
(1) a kind of metal oxide or metal hydroxides and phosphoric acid react in deionized water, and metal oxide or metal hydroxides are aluminium hydroxide, magnesium oxide, zinc oxide etc., react in deionized water with phosphoric acid to generate the phosphoric acid salt base-material.
(2) two kinds of metal oxides or metal hydroxides and phosphoric acid react in deionized water, and metal oxide or metal hydroxides are selected from aluminium hydroxide, magnesium oxide, zinc oxide etc., react in deionized water with phosphoric acid to generate the phosphoric acid salt base-material.
(3) phosphoric acid salt P: M (M is metallic element)=1.2～2.6 wherein.
Silicon sol solid part used among the present invention is 25～45%, and the amount of solid content of silicon sol is more high, and its cost is just more high, and different along with phosphoric acid salt base-material and other amounts of components are selected the silicon sol of corresponding solid part.
In order to improve the antistatic property of coating, need to add antistatic materials such as conductive mica powder, aluminium-doped zinc oxide powder among the present invention, but therefore their poor stabilities in the phosphoric acid salt base-material need to join in the phosphoric acid salt base-material after the special processing again.Detailed process is for to be dissolved in titanate coupling agent in 95% ethanol, 95% ethanol wherein: titanate coupling agent=30～50: 1, get titanate coupling agent 95% ethanolic soln 100ml and 200～300g conductive mica powder, aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, and the temperature of the hierarchy of control is less than 70 ℃ when pressure distillation, and pressure distillation finishes to be placed on 12h in the air.The conductive mica powder, the aluminium-doped zinc oxide powder that mix can add in the phosphoric acid salt base-material system.
Description of drawings
Accompanying drawing is technical process of the present invention
Embodiment
Add a certain amount of boric acid after in reaction flask, at first adding the metal oxide of phosphoric acid (85%) and certain amount ratio and metal hydroxides temperature rising reflux reaction 2h, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water after 60 ℃, make base-material.
After titanate coupling agent is dissolved in 95% ethanol, with conductive mica powder, aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture preparation coating of a certain amount of base-material, a certain amount of silicon sol and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity, resistance to elevated temperatures, coating hardness, sticking power.
Embodiment 1
At first add the boric acid that adds 12.0g behind phosphoric acid (85%) 140.0g and the 35.0g aluminium hydroxide temperature rising reflux reaction 2h in reaction flask, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water 100.0g after 60 ℃, make base-material.
After the 10.0g titanate coupling agent is dissolved in 450.0g95% ethanol, with 65.0g conductive mica powder, 35.0g aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture 35.0g preparation coating of 100.0g base-material, 100.0g silicon sol (45%) and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity 9.8 * 10
6Ω, 700 ℃ of 5h of resistance to elevated temperatures are intact, coating hardness 6H, 1 grade of sticking power (frame method).
Embodiment 2
At first add the boric acid that adds 12.0g behind phosphoric acid (85%) 140.0g and the 35.0g aluminium hydroxide temperature rising reflux reaction 2h in reaction flask, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water 100.0g after 60 ℃, make base-material.
After the 10.0g titanate coupling agent is dissolved in 450.0g95% ethanol, with 65.0g conductive mica powder, 35.0g aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture 35.0g preparation coating of 100.0g base-material, 70.0g silicon sol (45%) and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity 5.9 * 10
6Ω, 700 ℃ of 5h of resistance to elevated temperatures are intact, coating hardness 5H, 1 grade of sticking power (frame method).
Embodiment 3
At first add the boric acid that adds 12.0g behind phosphoric acid (85%) 140.0g and the 42.0g aluminium hydroxide temperature rising reflux reaction 2h in reaction flask, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water 100.0g after 60 ℃, make base-material.
After the 10.0g titanate coupling agent is dissolved in 450.0g95% ethanol, with 65.0g conductive mica powder, 35.0g aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture 35.0g preparation coating of 100.0g base-material, 90.0g silicon sol (45%) and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity 8.2 * 10
6Ω, 700 ℃ of 5h of resistance to elevated temperatures are intact, coating hardness 5H, 2 grades of sticking power (frame method).
Embodiment 4
In reaction flask, at first add the boric acid that adds 12.0g behind phosphoric acid (85%) 140.0g and 35.0g aluminium hydroxide and the 5.0g magnesium oxide temperature rising reflux reaction 2h, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water 100.0g after 60 ℃, make base-material.
After the 10.0g titanate coupling agent is dissolved in 450.0g95% ethanol, with 65.0g conductive mica powder, 35.0g aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture 35.0g preparation coating of 100.0g base-material, 100.0g silicon sol (45%) and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity 9.1 * 10
6Ω, 700 ℃ of 5h of resistance to elevated temperatures are intact, coating hardness 6H, 1 grade of sticking power (frame method).
Embodiment 5
At first add the boric acid that adds 12.0g behind phosphoric acid (85%) 140.0g and the 30.0g aluminium hydroxide temperature rising reflux reaction 2h in reaction flask, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water 100.0g after 60 ℃, make base-material.
After the 10.0g titanate coupling agent is dissolved in 450.0g95% ethanol, with 65.0g conductive mica powder, 35.0g aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture 35.0g preparation coating of 100.0g base-material, 110.0g silicon sol (45%) and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity 9.0 * 10
6Ω, 700 ℃ of 5h of resistance to elevated temperatures are intact, coating hardness 6H, 1 grade of sticking power (frame method).
Embodiment 6
At first add the boric acid that adds 12.0g behind phosphoric acid (85%) 140.0g and the 24.5g magnesium oxide temperature rising reflux reaction 2h in reaction flask, continue to cool off behind the back flow reaction 1h, the temperature of system adds deionized water 100.0g after 60 ℃, make base-material.
After the 10.0g titanate coupling agent is dissolved in 450.0g95% ethanol, with 65.0g conductive mica powder, 35.0g aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h.The second alcohol and water is removed in underpressure distillation again, makes conductive mica powder, aluminium-doped zinc oxide powder mixture.
Get the mixture 35.0g preparation coating of 100.0g base-material, 70.0g silicon sol (45%) and the conductive mica powder of having handled, aluminium-doped zinc oxide powder.
Correlated performance after test coating and the film forming: surface resistivity 7.2 * 10
6Ω, 700 ℃ of 5h of resistance to elevated temperatures are intact, coating hardness 5H, 1 grade of sticking power (frame method).
Claims (6)
1. inorganic high-temperature resistant and antistatic coating, main raw material has phosphoric acid salt base-material, silicon sol, boric acid, water, titanate coupling agent, conductive mica powder, aluminium-doped zinc oxide powder, wherein each raw material weight content is, phosphoric acid salt base-material content is 30～60%, boric acid content is 2～10%, water-content is 25～45%, the content 5～25% of silicon sol, titanate coupling agent content is 2～5%, conductive mica powder content is 8～18%, the aluminium-doped zinc oxide powder content is 5～10%, each component concentration and be 100%, and the phosphoric acid salt base-material is prepared from by following material at least:
⑴ metal oxide or metal hydroxides and phosphoric acid react in deionized water, and metal oxide or metal hydroxides are aluminium hydroxide, magnesium oxide, zinc oxide, react in deionized water with phosphoric acid to generate the phosphoric acid salt base-material;
⑵ two kinds of metal oxides or metal hydroxides and phosphoric acid react in deionized water, and metal oxide or metal hydroxides are selected from aluminium hydroxide, magnesium oxide, zinc oxide, react in deionized water with phosphoric acid to generate the phosphoric acid salt base-material;
Described conductive mica powder, aluminium-doped zinc oxide powder were handled with titanate coupling agent before adding base-material: after titanate coupling agent is dissolved in 95% ethanol, with conductive mica powder, aluminium-doped zinc oxide powder mixing and stirring, in 60 ± 2 ℃ environment, place 4h, the second alcohol and water is removed in underpressure distillation again, the temperature of the hierarchy of control is less than 70 ℃ when pressure distillation, pressure distillation finishes to be placed on 12h in the air, and the mixture of conductive mica powder, aluminium-doped zinc oxide powder can add in the phosphoric acid salt base-material system.
2. inorganic high-temperature resistant and antistatic coating as claimed in claim 1, wherein solid part of silicon sol is 25～45%.
3. inorganic high-temperature resistant and antistatic coating as claimed in claim 1, wherein mol ratio P:M=1.2～2.6 of phosphorus and metallic element M in the phosphoric acid salt.
4. inorganic high-temperature resistant and antistatic coating as claimed in claim 1, the mass content 8～18% of conductive mica powder wherein, and to use titanate coupling agent to handle.
5. inorganic high-temperature resistant and antistatic coating as claimed in claim 1, wherein aluminium-doped zinc oxide powder quality content is 5～10% and will uses titanate coupling agent to handle.
6. inorganic high-temperature resistant and antistatic coating as claimed in claim 1 is characterised in that, consumption of ethanol was 30～50 times of titanate coupling agent when titanate coupling agent was handled conductive mica powder, aluminium-doped zinc oxide powder.
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| CN 200910219418 CN101760055B (en) | 2009-11-30 | 2009-11-30 | Inorganic high-temperature resistant and antistatic coating |
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| CN 200910219418 CN101760055B (en) | 2009-11-30 | 2009-11-30 | Inorganic high-temperature resistant and antistatic coating |
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| CN101760055B true CN101760055B (en) | 2013-08-07 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010623B (en) * | 2010-11-16 | 2013-06-26 | 北方涂料工业研究设计院 | High temperature resistant and erosion resistant inorganic protective coating |
| CN102115881B (en) * | 2010-12-27 | 2012-05-02 | 上海迪升防腐新材料科技有限公司 | Environment-friendly insulating coating solution used for non-oriented silicon steel and preparation and application thereof |
| CN102417744A (en) * | 2011-11-24 | 2012-04-18 | 北方涂料工业研究设计院 | Phosphate-based high-temperature-resistant anti-corrosion paint and preparation method thereof |
| CN104087034A (en) * | 2014-07-18 | 2014-10-08 | 关锦池 | Inorganic high-temperature resistant and anti-electrostatic coating material |
| CN105131662B (en) * | 2015-10-09 | 2016-10-26 | 广东美的厨房电器制造有限公司 | Conduct electricity coating easy to clean and preparation method thereof and dust collecting bucket of dust catcher and vacuum cleaner |
| CN109897400A (en) * | 2017-12-07 | 2019-06-18 | 航天特种材料及工艺技术研究所 | A kind of high-temperature-resistant insulating paint and preparation method thereof |
| CN110016244A (en) * | 2019-03-27 | 2019-07-16 | 中国航发北京航空材料研究院 | A kind of stainless steel blade surface high-temperature resistant anti-corrosive is lubricious and preparation method thereof |
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| JPH0645899B2 (en) * | 1987-09-30 | 1994-06-15 | 三菱マテリアル株式会社 | Method for producing metal-coated inorganic powder |
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| CN101092526A (en) * | 2006-06-23 | 2007-12-26 | 宜兴市华晶化工厂 | Specific fire resistant paint and preparation method |
| CN101280130A (en) * | 2008-05-09 | 2008-10-08 | 天津大学 | Phosphate-silicon dioxide low-dielectric high temperature-resistant coating and preparation thereof |
| CN101580652A (en) * | 2009-05-26 | 2009-11-18 | 上海大学 | Preparation method of light-colored static conductive filling material |
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