CN114481136B - Vapor phase corrosion inhibitor based on metal organic framework material and preparation method thereof - Google Patents
Vapor phase corrosion inhibitor based on metal organic framework material and preparation method thereof Download PDFInfo
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- CN114481136B CN114481136B CN202210027061.1A CN202210027061A CN114481136B CN 114481136 B CN114481136 B CN 114481136B CN 202210027061 A CN202210027061 A CN 202210027061A CN 114481136 B CN114481136 B CN 114481136B
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- 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
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
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Abstract
The invention provides a vapor phase corrosion inhibitor based on a metal organic frame material, which relates to the technical field of vapor phase corrosion inhibitors and comprises the following components in 5-50 mg of metal organic frame material; 10 to 120mmol/ml of the triamterene acetonitrile solution. According to the invention, by organically combining the metal organic frame and the triamterene, the triamterene can be completely stored in the holes of the metal organic frame, self-starting release is realized according to environmental changes, and a protective film is formed.
Description
Technical Field
The invention relates to the technical field of vapor phase corrosion inhibitors, in particular to a vapor phase corrosion inhibitor based on a metal organic framework material and a preparation method thereof.
Background
A common problem now faced by metal products in manufacturing, use and transportation is corrosion, which has become a tripping stone in the current industry, which can cause not only a great economic loss, but also environmental pollution and even catastrophic accidents.
The corrosion inhibitor technology has a good effect and huge economic benefit in practical application, so that the technology has gradually become an important corrosion prevention technology.
In the case of metals in a liquid medium having corrosion resistance, water-soluble corrosion inhibitors are generally selected, and in the case of metals exposed to the atmosphere, small-molecule compounds capable of automatically volatilizing are generally selected as vapor phase corrosion inhibitors. The small molecular vapor phase corrosion inhibitor can protect the internal grooves, surfaces and even gap parts of the metal product, so that the vapor phase corrosion inhibitor becomes an effective method for improving the metal corrosion prevention effect.
The researches on the gas phase corrosion inhibitors can be roughly divided into three types, namely, the gas phase corrosion inhibitors of ferrous metals, such as dicyclohexylamine nitrite and cyclohexylamine carbonate, have good rust resistance to ferrous metals, nickel, zinc and the like, and have no corrosion resistance to nonferrous metals. The one is a gas phase corrosion inhibitor compounded by a plurality of metals, such as benzotriazole and a plurality of compounds with different vapor pressures. Although compounds such as benzotriazole, dicyclohexylamine nitrite and cyclohexylamine carbonate have proved to have good corrosion inhibition performance, they have a common characteristic of high toxicity, so that the compounds are nontoxic, low-toxicity corrosion inhibitors are rapidly developed, and the compounds are mainly inorganic acid salts and organic acid salts of amines, rust-proof paper rust-proof films loaded with vapor phase corrosion inhibitors and the like.
At present, a lot of reports are about the use of the gas phase corrosion inhibitor, but the use condition of the gas phase corrosion inhibitor is not clear, and the gas phase corrosion inhibitor can still volatilize under a low corrosion environment, so that certain waste is caused.
Disclosure of Invention
The invention aims to provide a gas-phase corrosion inhibitor based on a metal organic frame material, which is used for providing another gas-phase corrosion inhibitor, and the gas-phase corrosion inhibitor can release the corrosion inhibitor according to humidity, so that a protective film is formed for protection, the purpose of effectively and controllably regulating the release of the corrosion inhibitor is achieved, and unnecessary waste is reduced.
The invention is realized by the following technical scheme: 5-50 mg of metal organic frame material; 10 to 120mmol/ml of the triamterene acetonitrile solution. Wherein the triamterene acetonitrile solution is prepared by dissolving triamterene in acetonitrile solution, and acetonitrile is used as solvent.
In order to better realize the invention, the metal organic framework material is MOF-5.
The invention also provides a preparation method of the vapor phase corrosion inhibitor based on the metal organic framework material, which comprises the steps of mixing the metal organic framework material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the vapor phase corrosion inhibitor.
In order to better realize the invention, further reaction conditions are as follows: stirring at 25-100 deg.c and 1000r/min for 1-7 days, centrifuging at 6000 rpm for 10-45 min, washing with acetonitrile solution for 1-5 times, and vacuum drying at 60-100 deg.c for 6 hr.
In order to better realize the invention, further reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 6 days, centrifuging at 6000 rpm for 30 min, washing with acetonitrile solution for 3 times, and vacuum drying at 80deg.C for 6 hr.
The vapor phase corrosion inhibitor based on the metal organic framework material is prepared by the preparation method.
The invention also provides application of the vapor phase corrosion inhibitor based on the metal organic framework material in the metal corrosion prevention direction.
The invention provides a gas phase corrosion inhibitor based on a metal organic framework material, which is prepared by mixing an organic metal framework and an triamterene acetonitrile solution, wherein the metal organic framework is selected from metal organic frameworks MOF-5, the metal organic framework is in a porous pipe, after being mixed with the triamterene, the triamterene can enter holes of the metal organic frameworks MOF-5 through stirring and centrifugation, then washing and drying are carried out, and then the triamterene is stored in the holes of the metal organic frameworks MOF-5. In the use, if the environment is dry, then metal organic framework MOF-5 can not take place to decompose, exists the triamterene in metal organic framework MOF-5 and can not contact with the metal either, can not adsorb into the protection film on the metal surface yet, can not cause extravagant, when the humidity of use environment is higher, metal organic framework MOF-5 can be decomposed, and after the decomposition, exists the triamterene in metal organic framework MOF-5 and just can be released, adsorbs on the metal surface, forms the protection film, reaches the purpose of protection.
The beneficial effects of the invention are as follows:
according to the invention, by organically combining the metal organic frame and the triamterene, the triamterene can be completely stored in the holes of the metal organic frame, and the self-starting release is realized according to the change of the environment to form the protective film, particularly, when the environment is dry, the metal organic frame is not decomposed, so that the triamterene is not released, the release possibility is reduced, the service life of the corrosion inhibitor is prolonged, unnecessary waste is reduced, when the humidity of the environment is higher, the metal organic frame is decomposed, the triamterene in the metal organic frame is also released to form the protective film, the purpose of protection is further achieved, and the corrosion inhibitor can realize self-adaptive adjustment according to the change of the environment, thereby improving the utilization rate of the corrosion inhibitor.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the following brief description will be given of the drawings required for the present invention, it being understood that the following drawings only illustrate some embodiments of the present invention and are therefore not to be considered limiting in scope, and that other relevant drawings may be obtained from these drawings without the benefit of the inventive effort to a person of ordinary skill in the art.
FIG. 1 is a photograph of a vapor phase corrosion inhibitor based on a metal organic framework material provided by the present invention;
FIG. 2 is an AC impedance spectrum of the loaded vapor phase corrosion inhibitor provided by the invention;
FIG. 3 is a graph of polarization curve of test carbon steel provided by the present invention;
FIG. 4 is a graph showing the change of the charge transfer resistance with humidity of the vapor phase corrosion inhibitor of the present invention.
Detailed Description
The technical scheme of the present invention will be described below with reference to the accompanying drawings.
Example 1:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 10mmol of the triamterene acetonitrile solution and 1ml of the same.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 10 min, washing with acetonitrile solution for 1 time, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 2:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 50mmol of the triamterene acetonitrile solution and 1ml of the same.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 45 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 3:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 100mmol of the triamterene acetonitrile solution and 1ml of the triamterene acetonitrile solution.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 15 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 4:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 50mmol of the triamterene acetonitrile solution and 1ml of the same.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 50deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 25 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 5:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 150mmol of the triamterene acetonitrile solution, 1ml.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 30deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 35 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 6:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 50mmol/ml of the triamterene acetonitrile solution.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 20 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 7:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 50mmol of the triamterene acetonitrile solution and 1ml of the same.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 30 min, washing with acetonitrile solution for 2 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Example 8:
a vapor phase corrosion inhibitor based on a metal organic framework material, comprising the following components;
10mg of a metal organic framework material; 50mmol of the triamterene acetonitrile solution and 1ml of the same.
The metal organic frame material is MOF-5.
A preparation method of a vapor phase corrosion inhibitor based on a metal organic framework material,
mixing the metal organic frame material with the triamterene acetonitrile solution, stirring, centrifuging, washing and vacuum drying to obtain the gas phase corrosion inhibitor.
The reaction conditions are as follows: stirring at 80deg.C and 1000r/min for 1 day, centrifuging at 6000 rpm for 40 min, washing with acetonitrile solution for 3 times, and vacuum drying at 80deg.C for 6 hr.
According to parts by weight, 1 part of the prepared humidity controlled release type vapor phase corrosion inhibitor is wrapped in a non-woven fabric bag, and the corrosion resistance is tested in a closed container with the humidity of 50 percent.
Experimental results
As shown in FIG. 2, FIG. 2 shows the alternating current impedance spectrum of the load vapor phase corrosion inhibitor, and from the graph, it can be seen that the arc radius of the capacitive reactance of MOF-5 loaded with the triamterene is obviously larger than that of MOF-5 of the metal organic framework without the triamterene, which shows that with the increase of humidity, MOF-5 of the metal organic framework is decomposed, the triamterene is volatilized slowly and adsorbed on the metal surface, and the corrosion resistance of the metal is improved.
As shown in fig. 3, fig. 3 is a polarization graph, and it can be seen from the graph that after the triamterene is added, the corrosion current density is reduced by 2 orders of magnitude, which indicates that the triamterene has certain corrosion resistance.
As shown in fig. 4, it can be seen from the graph that as humidity increases, a part of the triamterene is released, and the charge transfer resistance increases, which indicates that the triamterene can play a certain role in corrosion inhibition on the metal surface.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A vapor phase corrosion inhibitor based on a metal organic framework material, which is characterized by comprising the following components:
5-50 mg of metal organic frame material; 10 to 120mmol/ml of the triamterene acetonitrile solution.
2. The vapor phase corrosion inhibitor based on metal organic framework material according to claim 1, wherein the metal organic framework material is MOF-5.
3. The method for preparing the vapor phase corrosion inhibitor based on the metal organic framework material according to claim 2, wherein the metal organic framework material and the triamterene acetonitrile solution are mixed, stirred, centrifuged, washed and vacuum-dried to obtain the vapor phase corrosion inhibitor.
4. A process according to claim 3, wherein the reaction conditions are: stirring at 25-100 deg.c and 1000r/min for 1-7 days, centrifuging at 6000 rpm for 10-45 min, washing with acetonitrile solution for 1-5 times, and vacuum drying at 60-100 deg.c for 6 hr.
5. The method according to claim 4, wherein the reaction conditions are: stirring at 80deg.C and 1000r/min for 6 days, centrifuging at 6000 rpm for 30 min, washing with acetonitrile solution for 3 times, and vacuum drying at 80deg.C for 6 hr.
6. A vapor phase corrosion inhibitor based on a metal organic framework material, characterized in that it is prepared by the preparation method according to any one of claims 3 to 5.
7. Use of a vapor phase corrosion inhibitor based on metal organic framework material according to claim 6 in the metal corrosion protection direction.
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