CN105440744A - Water-based ceramic anticorrosive coating containing aluminum phosphate as well as preparation and curing methods thereof - Google Patents
Water-based ceramic anticorrosive coating containing aluminum phosphate as well as preparation and curing methods thereof Download PDFInfo
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- CN105440744A CN105440744A CN201510807495.3A CN201510807495A CN105440744A CN 105440744 A CN105440744 A CN 105440744A CN 201510807495 A CN201510807495 A CN 201510807495A CN 105440744 A CN105440744 A CN 105440744A
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Abstract
The invention discloses a water-based ceramic anticorrosive coating containing aluminum phosphate as well as preparation and curing methods thereof. The water-based ceramic anticorrosive coating containing aluminum phosphate is prepared by adopting aluminium dihydrogen phosphate as a bonding agent, magnesium oxide and zinc oxide as a curing agent, aluminum powder as filler, magnesium chromate as a passivating agent and tetraethyl orthosilicate as an auxiliary agent. The coating is used for preparing a metal ceramic coating layer on a metallic matrix, and the coating layer can tolerate 1000h of neutral salt fog test and keep stable. The coating layer has good high-temperature oxidation resistance in a high-temperature (600 DEG C) oxidation environment. The coating layer can well protect metals in a normal-temperature salt-containing environment and a high-temperature oxidation environment.
Description
Technical field
The present invention relates to protective system field, particularly relate to a kind of using phosphoric acid salt as binding agent, aluminium powder as the water-based of filler containing aluminate or phosphate ceramic anticorrosive paint and preparation thereof and curing.
Background technology
Along with metallic substance is more and more applied in engineer equipment, often there is serious corrosion in the metal works be applied in the environment of high temperature, high humidity, high corrosion, affects running and the use of whole engineer equipment.Compared to normal temperature environment, high-temperature oxidation environment can cause metal oxidation corrosion more fast, the comprehensive mechanical property of metal works is declined fast, thus the metal works being applied to special dimension is needed to carry out comprehensive corrosion prevention from normal temperature environment corrosive environment to high temperature oxidation and corrosion environment to it.
Current most of protective system is the corrosion prevention be applied under normal temperature environment, is difficult in the hot environment more than more than 300 DEG C for metallic substance provides corrosion prevention.Surfacecti proteon treatment technology for metallic high temperature oxidation protection mainly comprises plasma surface metallurgic, vapour deposition, magnetron sputtering, enamel etc., and treatment process is comparatively complicated, and treatment temp, often more than 1000 DEG C, limits the application of its heavy industrialization.The coating that can carry out corrosion prevention to metal works all sidedly is at present containing aluminate or phosphate protective system.Coating is binding agent with phosphoric acid salt, take aluminium powder as filler, can provide good corrosion prevention in normal temperature saline environment and high-temperature oxidation environment to steel, but lacks business-like application containing aluminate or phosphate coating.
Summary of the invention
The present invention, in order to solve the problem of prior art, provides a kind of water-based containing aluminate or phosphate ceramic anticorrosive paint and preparation thereof and curing, utilizes this coating can provide corrosion prevention to metal in normal temperature saline environment with high-temperature oxidation environment.
Coating material provided by the invention comprises following component by weight: phosphate binders 1000-1200 part, distilled water 1000-1500 part, solidifying agent 16-20 part, coatings additive(s) 20-60 part, passivator 24-40 part, functional stuffing 45-55 part.
Described phosphate binders to be content be 30% aluminium dihydrogen phosphate aqueous solution, purity is analytical pure.
Described solidifying agent is zinc oxide and magnesium oxide, and wherein the consumption of zinc oxide accounts for 40%-60% of solidifying agent gross weight, and magnesian consumption accounts for 40%-60% of solidifying agent gross weight.
Described coatings additive(s) is tetraethyl orthosilicate.
Described functional stuffing is the spherical aluminium powder of submicron, and purity is 99%, and median size is 800nm.
Described passivator is magnesium chromate.
Present invention also offers the preparation method of a kind of water-based containing aluminate or phosphate ceramic anticorrosive paint, comprise the following steps:
1) 1000-1200 part aluminium dihydrogen phosphate is mixed with 1000-1500 part distilled water, form settled solution;
2) 20-60 part tetraethyl orthosilicate is joined in solution, under air-proof condition, adopt the mode of magnetic agitation to stir, until form settled solution;
3) 8-10 part zinc oxide is joined in solution, adopt glass stick constantly to stir until dissolve completely, then add 8-10 part magnesium oxide, adopt glass stick constantly to stir, remove bubble until dissolve completely, form translucent solution;
4) 24-40 part magnesium chromate is joined in mixing solutions, constantly stir and form homogeneous mixture solotion;
5) micro-nano for 45-55 part ball-type aluminium powder is joined in mixing solutions, and stir.
Present invention also offers the curing of a kind of water-based containing aluminate or phosphate ceramic anticorrosive paint, coating carries out aerial spraying or after brushing coating, is warming up to 200 DEG C and dries 17h after adopting baking oven to dry 2h in 120 DEG C.
Beneficial effect of the present invention is: provide a kind of can simultaneously providing in normal temperature and hot environment and corrode and the inorganic paint of surfacecti proteon, the coating prepared by coating can the 1000h of resistance to neutral salt spray test and under the hot conditions of 600 DEG C for complete oxidation-resistance, the corrosion prevention of normal temperature saline environment and high temperature oxidation and corrosion protection can be carried out to metallic matrix.
Accompanying drawing explanation
Fig. 1 is coating structure and mechanism schematic diagram.
Embodiment
Coating provided by the invention have employed aluminium dihydrogen phosphate as binding agent, and magnesium oxide, zinc oxide are as solidifying agent, and aluminium powder is as filler, and magnesium chromate is as passivator, and tetraethyl orthosilicate is prepared from as auxiliary agent.Anticorrosion with coat principle as shown in Figure 1, after paint spay-coating to metal base surface also solidification, the coating formed by the bonding aluminium powder of phosphate ceramics is formed at metal base surface, wherein aluminium powder is the component that paint solidification forms that proportion is maximum after coating, is also the most important component that coating realizes oxidant protection under high temperature in corrosion prevention and high-temperature oxidation environment under normal temperature.Metallic aluminium keeps stable in normal temperature environment, also has excellent high temperature oxidation resistance simultaneously.
In corrosive environment at normal temperatures; aluminum phosphate ceramic bonding agent and aluminium powder all keep stable; stop that corrosive medium contacts with metallic matrix; when being in the hot environment of about 600 DEG C; melting, diffusion can be there is in the aluminum particle of coat inside; form one deck aluminium barrier layer at coat inside, aluminium barrier layer surface generates the alumina flake of one deck densification in an oxidizing environment, O
2-ion is very difficult wherein, hinders carrying out further of oxidizing reaction, for metallic matrix provides resistance to high temperature oxidation to protect.
Below by specific embodiment, the present invention will be further described.
Example one
1000 parts of aluminium dihydrogen phosphates are mixed with 1200 parts of distilled water, adds 60 parts of tetraethyl orthosilicates after forming homogeneous solution, under air-proof condition, adopt the mode of magnetic agitation to stir, until tetraethyl orthosilicate complete hydrolysis, form settled solution.Add 8 parts of zinc oxide and 10 parts of magnesium oxide subsequently, constantly stir and make it to dissolve completely, add 28 parts of magnesium chromates, mix rear interpolation 45 parts of micro-nano aluminum powder and be uniformly dispersed, prepared by coating.Adopt the steel plate of the mode of aerial spraying by paint spay-coating to surface through grinding process, be warming up to 200 DEG C of oven dry 17h dry 2h in the baking oven of 120 DEG C after and prepare coating.
Example one paint formulation test performance is as follows:
(1) in neutral salt spray test, the neutral salt spray test rear surface that coating is being gone through 1008 hours starts to occur rust spot
(2) under 600 DEG C of high-temperature oxidation test conditions, high temperature oxidation is after 100 hours, sample oxidation weight gain 8.0517g/m
2, at the end of experiment, oxidation rate is 0.04g/ (m
2.h), 0.1g/ (m is less than
2.h), according to GBT13303-1991 " the antioxidant property measuring method of steel ", the high-temperature oxidation resistance of coating under 600 DEG C of conditions is complete oxidation-resistance.
Example two
1300 parts of aluminium dihydrogen phosphates are mixed with 1000 parts of distilled water, adds 40 parts of tetraethyl orthosilicates after forming homogeneous solution, under air-proof condition, adopt the mode of magnetic agitation to stir, until tetraethyl orthosilicate complete hydrolysis, form settled solution.Add 9 parts of zinc oxide and 9 parts of magnesium oxide subsequently, constantly stir and make it to dissolve completely, add 24 parts of magnesium chromates, mix rear interpolation 48 parts of micro-nano aluminum powder and be uniformly dispersed, prepared by coating.Adopt the steel plate of the mode of aerial spraying by paint spay-coating to surface through grinding process, be warming up to 200 DEG C of oven dry 17h dry 2h in the baking oven of 120 DEG C after and prepare coating.
Example two paint formulation test performance is as follows:
(1) in neutral salt spray test, the neutral salt spray test rear surface that coating is being gone through 960 hours starts to occur rust spot;
(2) under 600 DEG C of high-temperature oxidation test conditions, high temperature oxidation is after 100 hours, sample oxidation weight gain 7.3515g/m
2, at the end of experiment, oxidation rate is 0.08g/ (m
2.h), 0.1g/ (m is less than
2.h), according to GBT13303-1991 " the antioxidant property measuring method of steel ", the high-temperature oxidation resistance of coating under 600 DEG C of conditions is complete oxidation-resistance.
Example three
1500 parts of aluminium dihydrogen phosphates are mixed with 1100 parts of distilled water, adds 20 parts of tetraethyl orthosilicates after forming homogeneous solution, under air-proof condition, adopt the mode of magnetic agitation to stir, until tetraethyl orthosilicate complete hydrolysis, form settled solution.Add 10 parts of zinc oxide and 8 parts of magnesium oxide subsequently, constantly stir and make it to dissolve completely, add 30 parts of magnesium chromates, mix rear interpolation 50 parts of micro-nano aluminum powder and be uniformly dispersed, prepared by coating.Adopt the steel plate of the mode of aerial spraying by paint spay-coating to surface through grinding process, be warming up to 200 DEG C of oven dry 17h dry 2h in the baking oven of 120 DEG C after and prepare coating.
Example three paint formulation test performance is as follows:
(1) in neutral salt spray test, coating starts in the neutral salt spray test rear surface of going through 1104 hours to occur comparatively significantly rust spot;
(2) under 600 DEG C of high-temperature oxidation test conditions, high temperature oxidation is after 100 hours, sample oxidation weight gain 7.7301g/m
2, at the end of experiment, oxidation rate is 0.05g/ (m
2.h), 0.1g/ (m is less than
2.h), according to GBT13303-1991 " the antioxidant property measuring method of steel ", the high-temperature oxidation resistance of coating under 600 DEG C of conditions is complete oxidation-resistance.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (9)
1. water-based is containing an aluminate or phosphate ceramic anticorrosive paint, it is characterized in that raw material comprises following component by weight: phosphate binders 1000-1200 part, distilled water 1000-1500 part, solidifying agent 16-20 part, coatings additive(s) 20-60 part, passivator 24-40 part, functional stuffing 45-55 part.
2. water-based according to claim 1 is containing aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: described phosphate binders to be content be 30% aluminium dihydrogen phosphate aqueous solution, purity is analytical pure.
3. water-based according to claim 1 is containing aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: described solidifying agent is zinc oxide and magnesium oxide, wherein the consumption of zinc oxide accounts for 40%-60% of solidifying agent gross weight, and magnesian consumption accounts for 40%-60% of solidifying agent gross weight.
4. water-based according to claim 1 is containing aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: described coatings additive(s) is tetraethyl orthosilicate.
5. water-based according to claim 1 is containing aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: described functional stuffing is the spherical aluminium powder of submicron, and purity is 99%, and median size is 800nm.
6. water-based according to claim 1 is containing aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: described passivator is magnesium chromate.
7. water-based is containing a preparation method for aluminate or phosphate ceramic anticorrosive paint, it is characterized in that comprising the following steps:
1) 1000-1200 part aluminium dihydrogen phosphate is mixed with 1000-1500 part distilled water, form settled solution;
2) 20-60 part tetraethyl orthosilicate is joined in solution, under air-proof condition, adopt the mode of magnetic agitation to stir, until form settled solution;
3) 8-10 part zinc oxide is joined in solution, adopt glass stick constantly to stir until dissolve completely, then add 8-10 part magnesium oxide, adopt glass stick constantly to stir, remove bubble until dissolve completely, form translucent solution;
4) 24-40 part magnesium chromate is joined in mixing solutions, constantly stir and form homogeneous mixture solotion;
5) micro-nano for 45-55 part ball-type aluminium powder is joined in mixing solutions, and stir.
8. water-based is containing a curing for aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: after coating carries out surface-coated, is warming up to 200 DEG C and dries 17h after adopting baking oven to dry 2h in 120 DEG C.
9. water-based according to claim 9 is containing the curing of aluminate or phosphate ceramic anticorrosive paint, it is characterized in that: described surface-coated comprises aerial spraying or brushing.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490253A (en) * | 2017-07-31 | 2017-12-19 | 兰溪市捷喜食品加工技术有限公司 | The industrial drying machine of high temperature, thermal balance |
| CN108587262A (en) * | 2018-05-30 | 2018-09-28 | 中国科学院宁波材料技术与工程研究所 | A kind of anti-corrosion anti-fouling coating and preparation method thereof |
| CN109021625A (en) * | 2018-05-30 | 2018-12-18 | 中国科学院宁波材料技术与工程研究所 | A kind of anti-corrosion automatic cleaning coating of long-acting type and preparation method thereof |
| CN109737159A (en) * | 2019-01-11 | 2019-05-10 | 大连理工（营口）新材料工程中心有限公司 | A kind of complex salt binder composite friction material and preparation method thereof |
| CN110003692A (en) * | 2019-03-27 | 2019-07-12 | 深圳华材新材料技术有限公司 | Anti-erosion anticorrosive paint and preparation method thereof and coating product |
| CN110204931A (en) * | 2019-05-09 | 2019-09-06 | 中国科学院金属研究所 | A kind of aluminium-chromium-phosphorus-oxygen symbiosis protective coating and preparation method thereof |
| CN111019414A (en) * | 2019-12-30 | 2020-04-17 | 烟台海誉新材料有限公司 | Inorganic anticorrosive paint and preparation method thereof |
| CN111393880A (en) * | 2020-05-18 | 2020-07-10 | 江苏省特种设备安全监督检验研究院 | Graphene modified inorganic phosphate protective coating and preparation method thereof |
| CN112592609A (en) * | 2020-12-10 | 2021-04-02 | 广东省科学院材料与加工研究所 | Wear-resistant and corrosion-resistant aluminum-based metal ceramic composite coating and preparation method thereof |
| CN113969072A (en) * | 2020-10-23 | 2022-01-25 | 深圳优易材料科技有限公司 | High-temperature anticorrosive coating capable of catalytically decomposing dioxin |
| CN114960183A (en) * | 2022-05-12 | 2022-08-30 | 浙江艺纺纺织品有限公司 | Production process of antibacterial home textile fabric |
| CN115011150A (en) * | 2022-06-07 | 2022-09-06 | 中昊北方涂料工业研究设计院有限公司 | Low-temperature curing phosphate protective coating and preparation and curing methods thereof |
| CN115232492A (en) * | 2022-08-09 | 2022-10-25 | 南京长江涂料有限公司 | Water-based phosphate ceramic coating and preparation method thereof |
| CN115612318A (en) * | 2021-11-29 | 2023-01-17 | 成都布雷德科技有限公司 | Low-temperature curing phosphate coating and preparation method thereof |
| CN115895303A (en) * | 2022-11-15 | 2023-04-04 | 中国科学院宁波材料技术与工程研究所 | High-temperature-resistant anticorrosive water-based phosphate ceramic coating with core-shell structured filler |
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Cited By (19)
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| CN107490253A (en) * | 2017-07-31 | 2017-12-19 | 兰溪市捷喜食品加工技术有限公司 | The industrial drying machine of high temperature, thermal balance |
| CN108587262A (en) * | 2018-05-30 | 2018-09-28 | 中国科学院宁波材料技术与工程研究所 | A kind of anti-corrosion anti-fouling coating and preparation method thereof |
| CN109021625A (en) * | 2018-05-30 | 2018-12-18 | 中国科学院宁波材料技术与工程研究所 | A kind of anti-corrosion automatic cleaning coating of long-acting type and preparation method thereof |
| CN109021625B (en) * | 2018-05-30 | 2020-06-16 | 中国科学院宁波材料技术与工程研究所 | Long-acting corrosion-resistant self-cleaning coating and preparation method thereof |
| CN109737159A (en) * | 2019-01-11 | 2019-05-10 | 大连理工（营口）新材料工程中心有限公司 | A kind of complex salt binder composite friction material and preparation method thereof |
| CN110003692A (en) * | 2019-03-27 | 2019-07-12 | 深圳华材新材料技术有限公司 | Anti-erosion anticorrosive paint and preparation method thereof and coating product |
| CN110204931A (en) * | 2019-05-09 | 2019-09-06 | 中国科学院金属研究所 | A kind of aluminium-chromium-phosphorus-oxygen symbiosis protective coating and preparation method thereof |
| CN111019414B (en) * | 2019-12-30 | 2021-08-06 | 烟台海誉新材料有限公司 | Inorganic anticorrosive paint and preparation method thereof |
| CN111019414A (en) * | 2019-12-30 | 2020-04-17 | 烟台海誉新材料有限公司 | Inorganic anticorrosive paint and preparation method thereof |
| CN111393880A (en) * | 2020-05-18 | 2020-07-10 | 江苏省特种设备安全监督检验研究院 | Graphene modified inorganic phosphate protective coating and preparation method thereof |
| CN113969072A (en) * | 2020-10-23 | 2022-01-25 | 深圳优易材料科技有限公司 | High-temperature anticorrosive coating capable of catalytically decomposing dioxin |
| CN112592609A (en) * | 2020-12-10 | 2021-04-02 | 广东省科学院材料与加工研究所 | Wear-resistant and corrosion-resistant aluminum-based metal ceramic composite coating and preparation method thereof |
| CN115612318A (en) * | 2021-11-29 | 2023-01-17 | 成都布雷德科技有限公司 | Low-temperature curing phosphate coating and preparation method thereof |
| CN114960183A (en) * | 2022-05-12 | 2022-08-30 | 浙江艺纺纺织品有限公司 | Production process of antibacterial home textile fabric |
| CN115011150A (en) * | 2022-06-07 | 2022-09-06 | 中昊北方涂料工业研究设计院有限公司 | Low-temperature curing phosphate protective coating and preparation and curing methods thereof |
| CN115232492A (en) * | 2022-08-09 | 2022-10-25 | 南京长江涂料有限公司 | Water-based phosphate ceramic coating and preparation method thereof |
| CN115232492B (en) * | 2022-08-09 | 2023-09-08 | 南京长江涂料有限公司 | Water-based phosphate ceramic coating and preparation method thereof |
| CN115895303A (en) * | 2022-11-15 | 2023-04-04 | 中国科学院宁波材料技术与工程研究所 | High-temperature-resistant anticorrosive water-based phosphate ceramic coating with core-shell structured filler |
| CN115895303B (en) * | 2022-11-15 | 2024-02-02 | 中国科学院宁波材料技术与工程研究所 | High-temperature-resistant corrosion-resistant water-based phosphate ceramic coating with core-shell structured filler |
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Application publication date: 20160330 |