CN111205690A - Metal anticorrosion antioxidant protective agent and preparation method thereof - Google Patents
Metal anticorrosion antioxidant protective agent and preparation method thereof Download PDFInfo
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- CN111205690A CN111205690A CN202010030442.6A CN202010030442A CN111205690A CN 111205690 A CN111205690 A CN 111205690A CN 202010030442 A CN202010030442 A CN 202010030442A CN 111205690 A CN111205690 A CN 111205690A
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- silane
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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
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/141—Amines; Quaternary ammonium compounds
- C23F11/142—Hydroxy amines
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Abstract
The invention provides a metal anticorrosion antioxidant protective agent and a preparation method thereof, which are suitable for protecting unprotected metal surfaces generated or exposed in the processing process. The construction is simple, and the coating can be finished; after the silane hydrolysate is mixed with the corrosion inhibitor and the resin, the silane hydrolysate is coated and dried to form silicic acid colloid, and the metal surface is sealed by matching with the corrosion inhibitor and the resin, so that the oxygen-barrier protection of the metal is realized; meanwhile, the silicic acid colloid mixture has a good anticorrosion effect and can reach the protective water higher than an electroplated layer. Solves the problem of poor corrosion resistance, oxidation resistance and protective performance of the metal section or the side surface.
Description
Technical Field
The invention belongs to the technical field of metal corrosion prevention, and particularly relates to a metal corrosion-prevention antioxidant protective agent and a preparation method thereof.
Background
In the existing metal anticorrosion and antioxidation technology, an electroplating process is generally adopted, for example, a galvanized plate is coated with a layer of dense zinc on an iron plate, so that the galvanized plate has excellent antioxidation and anticorrosion performances.
However, the plating process is performed in bulk. When the galvanized sheet is processed according to actual needs, a cut section is often formed, and the section is directly exposed out of the iron metal surface, so that oxidation and corrosion phenomena are easily caused, and the performance of the product is reduced.
The existing treatment processes such as coating of antirust paint and the like only have an antirust function, have a poor anticorrosion function and cannot meet the process requirements.
Disclosure of Invention
The invention aims to provide a metal anticorrosion and antioxidation protective agent to solve the problem of poor anticorrosion and antioxidation protective performance of a metal section or a side surface.
The specific scheme is as follows:
the metal anticorrosion and antioxidant protective agent comprises silane hydrolysate, wherein a corrosion inhibitor, a resin and an auxiliary agent are mixed in the silane hydrolysate.
The further technical scheme of the invention is that the silane is one or a mixture of at least two of gamma-aminopropyltriethoxysilane, N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane, 3-urea propyl trimethoxysilane, bis- [3- (triethoxy silicon) -propyl ] -amine, 3-urea propyl triethoxysilane, bis- [3- (trimethoxy silicon) -propyl ] -amine, 1, 2-bis (triethoxy silicon) ethane, 1, 2-bis (trimethoxy silicon) ethane and gamma-mercaptopropyl trimethoxysilane.
The further technical scheme of the invention is as follows: the corrosion inhibitor is one or a mixture of at least two of monoethanolamine, diethanolamine, triethanolamine and methyl benzotriazole sodium.
The further technical scheme of the invention is as follows: the resin is one or a mixture of at least two of acrylic resin, polyurethane resin, epoxy resin and polyester resin; the auxiliary agent is one or a mixture of at least two of an emulsifier, a flatting agent, a wetting agent, a defoaming agent and a pH value regulator.
The invention also provides a preparation method of the metal anticorrosion antioxidant protective agent, which comprises the following steps: mixing the auxiliary agent and the corrosion inhibitor with purified water or deionized water; adding silane to carry out hydrolysis reaction of the silane; and adding the resin into the hydrolysate of silane for dilution and mixing to prepare the metal protection antioxidant protection liquid.
The preparation method of the invention has the further technical scheme that the preparation method also comprises the steps of coating and drying: and coating the metal protection antioxidant protective liquid on the metal section or the unprotected metal surface, and naturally drying to form the protective film.
The preparation method has the further technical scheme that the silane comprises 5 wt% of gamma-aminopropyltriethoxysilane and 5 wt% of N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane, the corrosion inhibitor comprises 10 wt% of monoethanolamine and 3 wt% of sodium methylbenzotriazole, the auxiliary agent comprises 0.2 wt% of emulsifier, leveling agent, wetting agent, defoaming agent and pH value regulator, the deionized water is 66 wt% of deionized water, and the resin is 10 wt% of waterborne polyurethane resin.
The preparation method of the invention has the further technical scheme that: the silane is 10 weight percent of gamma-aminopropyl triethoxysilane; the corrosion inhibitor is composed of 10 wt% of monoethanolamine and 3 wt% of sodium methyl benzotriazole; the auxiliary agent consists of 0.2 percent of emulsifier, flatting agent, wetting agent, defoaming agent and pH value regulator; the deionized water is 66 weight percent of components; the resin is a waterborne polyurethane resin containing 10 weight percent of components.
The preparation method has the further technical scheme that the silane is 10 weight percent of N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane, the corrosion inhibitor is composed of 10 weight percent of monoethanolamine and 3 weight percent of sodium methylbenzotriazole, the auxiliary agent is composed of 0.2 weight percent of emulsifier, leveling agent, wetting agent, defoaming agent and pH value regulator, the deionized water is 66 weight percent of components, and the resin is 10 weight percent of waterborne polyurethane resin.
Has the advantages that: the metal anticorrosion antioxidant protective agent and the preparation method are suitable for protecting the unprotected metal surface generated or exposed in the processing process, the construction is simple, and the coating can be completed; after the silane hydrolysate is mixed with the corrosion inhibitor and the resin, the silane hydrolysate is coated and dried to form silicic acid colloid, and the metal surface is sealed by matching with the corrosion inhibitor and the resin, so that the oxygen-barrier protection of the metal is realized; meanwhile, the silicic acid colloid mixture has a good anticorrosion effect and can reach the protective water higher than an electroplated layer. Solves the problem of poor corrosion resistance, oxidation resistance and protective performance of the metal section or the side surface.
Detailed Description
The present invention provides embodiments, which are part of the disclosure of the present invention and mainly used to illustrate the technical solutions of the present invention. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures.
The invention will now be further described with reference to specific embodiments.
Example one
The embodiment provides a preparation method of a metal anticorrosion and antioxidant protective agent, which comprises the following steps:
step 1, a mixing step: mixing the auxiliary agent and the corrosion inhibitor with purified water or deionized water;
the auxiliary agent in the step is one or a mixture of at least two of an emulsifier, a leveling agent, a wetting agent, a defoaming agent and a pH value regulator, wherein in the embodiment, the auxiliary agent is composed of the emulsifier, the leveling agent, the wetting agent, the defoaming agent and the pH value regulator which are respectively 0.2% by weight, so as to ensure the physical properties of the final protective film.
The corrosion inhibitor in the step is one or a mixture of at least two of monoethanolamine, diethanolamine, triethanolamine and sodium methyl benzotriazole. In this embodiment, preferably, the corrosion inhibitor is composed of monoethanolamine in 10% by weight component and sodium methylbenzotriazole in 3% by weight component; to prevent or slow down corrosion of the material.
In this example, deionized water was used as the solvent, wherein deionized water was 66 wt% of the composition.
Step 2, hydrolysis step: adding silane to carry out hydrolysis reaction of the silane;
in this step, the silane may be one or a mixture of two or more of γ -aminopropyltriethoxysilane, N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane, 3-ureidopropyltrimethoxysilane, bis- [3- (triethoxysilyl) -propyl ] -amine, 3-ureidopropyltriethoxysilane, bis- [3- (trimethoxysilyl) -propyl ] -amine, 1, 2-bis (triethoxysilyl) ethane, 1, 2-bis (trimethoxysilyl) ethane, and γ -mercaptopropyltrimethoxysilane, and it is preferred that the silane in this example be composed of 5% by weight of γ -aminopropyltriethoxysilane and 5% by weight of N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane.
Silane is very sensitive to alkalinity, and deionized water has a trace amount of alkali change under the action of an auxiliary agent, so that silane can be rapidly hydrolyzed to generate silicic acid which is used for bearing a protective material.
And 3, diluting, namely adding the resin into silane hydrolysate for dilution and mixing to prepare the metal protection antioxidant protective solution.
In the step, the resin is one or a mixture of at least two of acrylic resin, polyurethane resin, epoxy resin and polyester resin; in this example, the resin is an aqueous polyurethane resin having 10% by weight of the components.
Through the steps, the embodiment provides a metal anticorrosion and antioxidant protective solution (namely a metal anticorrosion and antioxidant protective agent), which comprises silane hydrolysate, wherein a corrosion inhibitor, a resin and an auxiliary agent are mixed in the silane hydrolysate; the concrete components are as follows:
5% by weight of a gamma-aminopropyltriethoxysilane hydrolysate,
5% by weight of N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane hydrolyzate,
and 4, further comprising the steps of coating and drying:
and (3) coating the metal protection antioxidant protective solution obtained in the step (3) on a metal section or an unprotected metal surface, and naturally drying to form a protective film.
Example two
The embodiment provides a metal anticorrosion and antioxidant protective agent prepared by the preparation method of the embodiment I, and the raw materials of the steps are basically the same: the corrosion inhibitor consists of 10 weight percent of monoethanolamine and 3 weight percent of sodium methyl benzotriazole; the auxiliary agent consists of 0.2 percent of emulsifier, flatting agent, wetting agent, defoaming agent and pH value regulator; deionized water 66 wt%; the resin is an aqueous polyurethane resin containing 10% by weight of the components.
The main differences of this embodiment are: the silane in the preparation step of this example was 10% by weight of gamma-aminopropyltriethoxysilane;
namely, the metal anticorrosion and antioxidation protective agent of the embodiment mainly comprises the following components:
10% by weight of a gamma-aminopropyltriethoxysilane hydrolysate,
EXAMPLE III
The embodiment provides a metal anticorrosion and antioxidant protective agent prepared by the preparation method of the embodiment I, and the raw materials of the steps are basically the same: the corrosion inhibitor consists of 10 weight percent of monoethanolamine and 3 weight percent of sodium methyl benzotriazole; the auxiliary agent consists of 0.2 percent of emulsifier, flatting agent, wetting agent, defoaming agent and pH value regulator; deionized water 66 wt%; the resin is an aqueous polyurethane resin containing 10% by weight of the components.
The main difference between this example and its preparation is that the silane in the preparation step of this example is 10% by weight of component N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane;
namely, the metal anticorrosion and antioxidation protective agent of the embodiment mainly comprises the following components:
10% by weight of a component of N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane hydrolyzate;
for the metal corrosion-resistant and oxidation-resistant protective agent of the embodiment one to 3, the inventor of the present application further performed a smoke experiment, where table 1 is an experimental manner, table 2 is experimental conditions, and table 3 is an experimental record:
TABLE 1 Experimental modes
| Name of test piece | Description of the invention |
| Without protection | Derusting and degreasing>Drying |
| Example 1 | Derusting and degreasing>Drying>Spray example 1 protectant>Naturally curing |
| Example 2 | Derusting and degreasing>Drying>Spray example 2 protectant>Naturally curing |
| Example 3 | Derusting and degreasing>Drying>Spray example 3 protectant>Naturally curing |
TABLE 2 Experimental conditions
| Item | Standard of merit | Practice of |
| Concentration of brine | 5％ | 5％ |
| Quality of distilled water (PH value) | 6.5～7.2 | 7 |
| Spray Collection volume (ml/80cm2H) | 1.0～2.0 | 1.3 |
| pH of spray | 6.5～7.2 | 7 |
| Compressed air pressure (Kg/cm2) | 1.000.01 | 1.00 |
| Temperature of experiment | 35±1℃ | 35℃ |
TABLE 3 record of the experiments
| 12hr | 24hr | 36hr | 48hr | 60hr | |
| Without protection | Rusting | Rusting | Rusting | Rusting | Rusting |
| Example 1 | No corrosion | No corrosion | No corrosion | No corrosion | No corrosion |
| Example 2 | No corrosion | No corrosion | No corrosion | No corrosion | No corrosion |
| Example 3 | No corrosion | No corrosion | No corrosion | No corrosion | Has slight rust |
The salt spray experiment shows that the anticorrosive antioxidant protective agent of the first embodiment to the second embodiment 3 is a high-performance transparent anticorrosive antioxidant protective agent, which is coated on a section or an unprotected metal surface, and forms a protective film after drying to prevent metal corrosion and oxidation, and has good anticorrosive antioxidant effect.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A metal anticorrosion antioxidant protective agent is characterized in that: the silane corrosion inhibitor comprises silane hydrolysate, wherein a corrosion inhibitor, resin and an auxiliary agent are mixed in the silane hydrolysate.
2. The agent for corrosion prevention and oxidation prevention of metals according to claim 1, wherein said silane is one or a mixture of at least two of γ -aminopropyltriethoxysilane, N- β - (aminoethyl) - γ -aminopropyltrimethoxysilane, 3-ureidopropyltrimethoxysilane, bis- [3- (triethoxysilyl) -propyl ] -amine, 3-ureidopropyltriethoxysilane, bis- [3- (trimethoxysilyl) -propyl ] -amine, 1, 2-bis (triethoxysilyl) ethane, 1, 2-bis (trimethoxysilyl) ethane and γ -mercaptopropyltrimethoxysilane.
3. The metal corrosion-prevention antioxidant protectant as claimed in claim 1, characterized in that: the corrosion inhibitor is one or a mixture of at least two of monoethanolamine, diethanolamine, triethanolamine and methyl benzotriazole sodium.
4. The metal corrosion-prevention antioxidant protectant as claimed in claim 1, characterized in that: the resin is one or a mixture of at least two of acrylic resin, polyurethane resin, epoxy resin and polyester resin; the auxiliary agent is one or a mixture of at least two of an emulsifier, a flatting agent, a wetting agent, a defoaming agent and a pH value regulator.
5. A preparation method of a metal anticorrosion antioxidant protective agent is characterized by comprising the following steps: mixing the auxiliary agent and the corrosion inhibitor with purified water or deionized water; adding silane to carry out hydrolysis reaction of the silane; and adding the resin into the hydrolysate of silane for dilution and mixing to prepare the metal protection antioxidant protection liquid.
6. The method according to claim 5, further comprising a step of coating and drying: and coating the metal protection antioxidant protective liquid on the metal section or the unprotected metal surface, and naturally drying to form the protective film.
7. The production method according to claim 5 or 6, characterized in that:
the silane consists of 5 weight percent of gamma-aminopropyltriethoxysilane and 5 weight percent of N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane;
the corrosion inhibitor is composed of 10 wt% of monoethanolamine and 3 wt% of sodium methyl benzotriazole;
the auxiliary agent consists of 0.2 percent of emulsifier, leveling agent, wetting agent, defoaming agent and pH value regulator;
the deionized water is 66 weight percent of components;
the resin is a waterborne polyurethane resin containing 10 weight percent of components.
8. The production method according to claim 5 or 6, characterized in that:
the silane is 10 weight percent of gamma-aminopropyl triethoxysilane;
the corrosion inhibitor is composed of 10 wt% of monoethanolamine and 3 wt% of sodium methyl benzotriazole;
the auxiliary agent consists of 0.2 percent of emulsifier, flatting agent, wetting agent, defoaming agent and pH value regulator;
the deionized water is 66 weight percent of components;
the resin is a waterborne polyurethane resin containing 10 weight percent of components.
9. The production method according to claim 5 or 6, characterized in that:
the silane is 10 weight percent of N- β - (aminoethyl) -gamma-aminopropyltrimethoxysilane;
the corrosion inhibitor is composed of 10 wt% of monoethanolamine and 3 wt% of sodium methyl benzotriazole;
the auxiliary agent consists of 0.2 percent of emulsifier, flatting agent, wetting agent, defoaming agent and pH value regulator;
the deionized water is 66 weight percent of components;
the resin is a waterborne polyurethane resin containing 10 weight percent of components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010030442.6A CN111205690A (en) | 2020-01-13 | 2020-01-13 | Metal anticorrosion antioxidant protective agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010030442.6A CN111205690A (en) | 2020-01-13 | 2020-01-13 | Metal anticorrosion antioxidant protective agent and preparation method thereof |
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| CN111205690A true CN111205690A (en) | 2020-05-29 |
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| CN202010030442.6A Pending CN111205690A (en) | 2020-01-13 | 2020-01-13 | Metal anticorrosion antioxidant protective agent and preparation method thereof |
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2020
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Application publication date: 20200529 |