Vapor-phase antirust liquid containing nicotine and derivatives thereof and preparation method of vapor-phase antirust liquid

Abstract

The invention discloses a gas-phase antirust liquid containing nicotine and derivatives thereof and a preparation method thereof.The gas-phase antirust liquid is prepared from, by mass, 10-80 parts of a gas-phase corrosion inhibitor, 0.5-1 part of an antibacterial agent, 1-2 parts of a thickening agent and 70-90 parts of water, and the gas-phase corrosion inhibitor is one or more of nicotine or nicotine salt. According to the invention, nicotine and a derivative nicotine salt thereof are selected as a gas phase corrosion inhibitor, and a proper amount of antibacterial agent and thickening agent are added, so that the green, environment-friendly and non-toxic gas phase antirust liquid with corrosion inhibition performance can be obtained. The metal antirust agent can be applied to rust prevention of metal in the atmospheric environment and has a good protection effect on metal products.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of gas phase rust-proof packaging materials for iron, and particularly relates to a gas phase rust-proof liquid containing nicotine and derivatives thereof and a preparation method thereof. BACKGROUND

[0002] Metal parts such as gears and rotors play an important role in equipment manufacturing, but during transportation and storage, the metal surface is prone to rust due to external physical or chemical factors (such as mechanical wear and tear, chemical corrosion, etc.), affecting its appearance and performance, so certain rust-proof measures need to be taken. Gas phase rust-proof packaging materials are widely used in the rust-proofing of metal devices due to their advantages of simple operation, low price, and direct use after removal of the packaging.

[0003] Brushing gas phase rust-proof liquid on neutral paper is a simple method for preparing gas phase rust-proof paper, which can make the gas phase corrosion inhibitor in the gas phase rust-proof liquid adhere to the neutral paper to make it have gas phase rust-proof performance. As the core component of the gas phase rust-proof liquid, most gas phase corrosion inhibitors are synthetic chemicals, which are expensive and harmful to the environment. Dicyclohexylamine nitrite was widely used in the protection of ferrous metals in the last century due to its excellent rust-proof performance, but it has been banned due to its carcinogenicity. Urotropine is a highly effective corrosion inhibitor for ferrous metals, but it is controlled due to its easy preparation. Synthetic chemicals may harm the environment and human body during preparation and use. Therefore, it is an urgent market demand to find a green and environmentally friendly gas phase corrosion inhibitor with excellent rust-proof performance.

[0004] It is well known that plants are the source of natural chemicals in most studies. Plant extracts are biodegradable, non-toxic, and meet the requirements of sustainable development. Previous studies have extracted gas phase corrosion inhibitors from plants such as tomatoes and grapes, but the existing extracts require a long period to form a protective film on the metal surface, which is not suitable for direct use. Moreover, some extracts have poor water solubility, making it difficult to apply to the preparation of rust-proof packaging materials such as rust-proof paper. Nicotine is a natural chemical extracted from plants, and research has found that nicotine and nicotine salts have good water solubility and excellent corrosion inhibition performance for iron metal. In view of the problems of poor water solubility and harm to the environment and human body of existing products, the present application provides a preparation method of a green and environmentally friendly gas phase rust-proof liquid with excellent rust-proof performance, using nicotine and its salts as gas phase corrosion inhibitors. SUMMARY

[0005] In view of the poor water solubility of some gas phase corrosion inhibitors on the market and the harm to human body and environment, the application utilizes the natural alkaloid nicotine extracted from tobacco and fruits of solanaceae plants to carry out a salt formation reaction with organic acids in a solvent, adds a poor solvent to obtain nicotine salt, and then compounding nicotine with nicotine to serve as a gas phase corrosion inhibitor, and mixing with an antibacterial agent, a thickening agent and a solvent to prepare a gas phase rust-proof liquid with good rust-proof effect. The gas phase rust-proof liquid obtained by the application is green, environmentally friendly, non-polluting and degradable, and the preparation method of the gas phase rust-proof liquid is simple and green, and has important application value.

[0006] It should be noted that the nicotine and its salts of the application are not limited to natural extraction, but further include those obtained by chemical synthesis.

[0007] The first aspect of the application provides a gas phase rust-proof liquid containing nicotine and its derivatives, wherein the gas phase rust-proof liquid contains one or more of nicotine or nicotine salts.

[0008] Further, the components and compositions of the above-mentioned gas phase rust-proof liquid include, by mass percentage, 10-80 parts of a gas phase corrosion inhibitor, 0.5-1 part of an antibacterial agent, 1-2 parts of a thickening agent, and 70-90 parts of water, wherein the gas phase corrosion inhibitor is one or more of nicotine or nicotine salts.

[0009] Nicotine or nicotine salts as a gas phase corrosion inhibitor is the core component in the rust-proof liquid, has volatility, can continuously release corrosion gas in a sealed environment, and the gas can be adsorbed on the surface of the metal to form a protective film, effectively isolating air, moisture and other corrosive media from the metal, thereby achieving the purpose of rust prevention; the addition of the antibacterial agent can inhibit the growth and reproduction of microorganisms in the rust-proof liquid, prevent the influence of microbial contamination on the performance of the rust-proof liquid, and maintain the stability and effectiveness of the rust-proof liquid.

[0010] Further, the nicotine salt is one or more of nicotine malate, nicotine benzoate, nicotine citrate, nicotine tartrate, nicotine orotate and nicotine salicylate. Further, nicotine derivatives and their salts can also have similar effects.

[0011] Further, the thickening agent is one or more of carboxymethyl cellulose sodium, polyethylene glycol, polyacrylamide, carrageenan and xanthan gum.

[0012] Further, the antibacterial agent is one or more of natamycin, tea polyphenol, curcumin and aureomycin.

[0013] The second aspect of the application provides a preparation method of the above-mentioned nicotine salt, comprising:

[0014] step1. The nicotine, organic acid, solvent are mixed and stirred, and then reacted at 40-80℃ for 7-10h to obtain solution A;

[0015] step2. The poor solvent is added to solution A, and then filtered, washed and distilled to obtain nicotine salt;

[0016] The organic acid is one or more of malic acid, citric acid, benzoic acid, orotic acid and salicylic acid.

[0017] Further, the molar ratio of nicotine to organic acid is 1.0-3.0.

[0018] Further, the solvent is one or more of ethanol, methanol, acetonitrile or carbon tetrachloride.

[0019] Further, the poor solvent is one or more of ethyl acetate, n-heptane or toluene.

[0020] The second aspect of the present application also provides a preparation method of a gas phase rust inhibitor containing nicotine and its derivatives, comprising the following steps:

[0021] S1. The gas phase corrosion inhibitor and the antibacterial agent are sequentially added to a container containing a certain volume of deionized water, and stirred at room temperature to fully mix and dissolve to obtain corrosion inhibitor A;

[0022] S2. The thickening agent is slowly added to the corrosion inhibitor A, and continuously stirred until completely dissolved to obtain the gas phase rust inhibitor.

[0023] Further, the stirring speed in step S1 is 800-3000rpm, and the stirring time is 20-30min. The stirring speed in step S2 is 500-3000rpm, and the stirring time is 30-60min.

[0024] The third aspect of the present application also provides the use of the above-mentioned gas phase rust inhibitor containing nicotine and its derivatives in the field of gas phase rust prevention. The gas phase rust inhibitor provided by the present application is brushed on the neutral paper, dried and wrapped around the metal product to prevent rusting.

[0025] The beneficial effects of the present application are:

[0026] The present application selects efficient, green, environmentally friendly, water-soluble and degradable nicotine and nicotine salt as the gas phase corrosion inhibitor for use in the gas phase rust inhibitor. On the one hand, nicotine can be quickly released to the metal surface to form a gas phase protective film, which can prevent rust in a short time. On the other hand, nicotine salt can be slowly released to form a long-acting protection. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0028] Figure 1 Appearance of the vapor phase rust preventive liquid prepared for Example 1 of the present application and the appearance of the iron pieces of the experimental group and the blank group after 7 cycles of vapor phase discrimination test. DETAILED DESCRIPTION

[0029] Those skilled in the art can make appropriate modifications to the process parameters based on the content herein. In particular, it should be pointed out that all similar substitutions and modifications are obvious to those skilled in the art, and they are all considered to be included in the present application. The products of the present application have been described through preferred embodiments, and relevant personnel can obviously make modifications or appropriate changes and combinations to the products described herein without departing from the content, spirit and scope of the present application, to realize and apply the present application technology. The application is further described below through specific embodiments, and it should be pointed out that the following embodiments should not be understood as limiting the present application.

[0030] The terms "comprising", "including", "containing", "have" or "having", or any other similar phrase as set forth herein, are intended to cover and refer to a non-exclusive inclusion, for example, a composition, step, method, article, or apparatus that comprises a list of elements but not limited to those elements, and can include other elements not expressly listed or inherent to such composition, step, method, article, or apparatus.

[0031] The phrase "consisting of" excludes any element, step, or ingredient not specified. If used in the claims, the phrase "consisting of" will be construed to mean that the claimed subject matter excludes any element not specified in the claim. When the phrase "consisting of" follows the introductory clause "comprising a", "including", or "containing", it should be interpreted to exclude any element not specified in the clause.

[0032] When numerical ranges are disclosed, the endpoints of the ranges are included. The terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth", "thirteenth", "fourteenth", "fifteenth", "sixteenth", "seventeenth", "eighteenth", "nineteenth", "twentieth", "twenty-first", "twenty-second", "twenty-third", "twenty-fourth", "twenty-fifth", "twenty-sixth", "twenty-seventh", "twenty-eighth", "twenty-ninth", "thirtieth", "thirty-first", "thirty-second", "thirty-third", "thirty-fourth", "thirty-fifth", "thirty-sixth", "thirty-seventh", "thirty-eighth", "thirty-ninth", "fortieth", "forty-first", "forty-second", "forty-third", "forty-fourth", "forty-fifth", "forty-sixth", "forty-seventh", "forty-eighth", "forty-ninth", "fiftieth", "fifty-first", "fifty-second", "fifty-third", "fifty-fourth", "fifty-fifth", "fifty-sixth", "fifty-seventh", "fifty-eighth", "fifty-ninth", "sixtieth", "sixty-first", "sixty-second", "sixty-third", "sixty-fourth", "sixty-fifth", "sixty-sixth", "sixty-seventh", "sixty-eighth", "sixty-ninth", "seventieth", "seventy-first", "seventy-second", "seventy-third", "seventy-fourth", "seventy-fifth", "seventy-sixth", "seventy-seventh", "seventy-eighth", "seventy-ninth", "eightieth", "eighty-first", "eighty-second", "eighty-third", "eighty-fourth", "eighty-fifth", "eighty-sixth", "eighty-seventh", "eighty-eighth", "eighty-ninth", "ninetieth", "ninety-first", "ninety-second", "ninety-third", "ninety-fourth", "ninety-fifth", "ninety-sixth", "ninety-seventh", "ninety-eighth", "ninety-ninth", and "one hundredth" are used merely to distinguish between different elements, steps, or components, and do not denote any specific order or importance.

[0033] In some instances, approximate terms may correspond to the precision of the instrument used to measure the value. In this specification and claims, scope definitions may be combined and / or interchanged, unless otherwise stated, these scopes include all sub-scopes contained therein.

[0034] The indefinite articles “a” and “an” preceding an element or component of this invention do not impose any limitation on the quantity (i.e., number of times) of the element or component. Therefore, “an” or “a” should be interpreted as including one or at least one, and the singular form of an element or component also includes the plural form, unless the quantity clearly refers only to the singular form.

[0035] The terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., used in this invention refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms are not necessarily directed at the same embodiment or example. Furthermore, the technical features involved in the various embodiments of the invention can be combined with each other as long as they do not conflict with each other.

[0036] Unless otherwise specified, the raw materials and equipment used in this invention can be purchased from the market or are commonly used in the field. Unless otherwise specified, the methods in the embodiments are conventional methods in the field.

[0037] The following will describe the specific solutions and implementation methods in detail:

[0038] In some embodiments, a vapor-phase corrosion inhibitor containing nicotine and its derivatives comprises, by mass percentage, 10-80 parts of a vapor-phase corrosion inhibitor, 0.5-1 part of an antibacterial agent, 1-2 parts of a thickener, and 70-90 parts of water, wherein the vapor-phase corrosion inhibitor is one or more of nicotine or nicotine salts. Preferably, the vapor-phase corrosion inhibitor may be 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, or 80 parts; the antibacterial agent may be 0.5, 0.6, 0.7, 0.8, 0.9, or 1 part; the thickener may be 1, 1.2, 1.4, 1.6, 1.8, or 2 parts; and the water may be 70, 75, 80, 85, or 90 parts.

[0039] In some embodiments, the nicotine salt is one or more selected from nicotine malate, nicotine benzoate, nicotine citrate, nicotine tartrate, nicotine orotate, and nicotine salicylate. For example, a vapor phase corrosion inhibitor is a mixture of nicotine, nicotine malate, nicotine citrate, and nicotine benzoate. Furthermore, nicotine derivatives and their salts can also play a similar role.

[0040] In some embodiments, the thickening agent is one or more of sodium carboxymethylcellulose, polyethylene glycol, polyacrylamide, carrageenan, xanthan gum.

[0041] In some embodiments, the antibacterial agent is one or more of natamycin, tea polyphenol, curcumin, aureomycin.

[0042] In some embodiments, the application further discloses a preparation method of the above nicotine salt, comprising:

[0043] step 1. mixing nicotine, organic acid and solvent by stirring, and then reacting at 40-80°C for 7-10h to obtain solution A;

[0044] step 2. adding a poor solvent to solution A, and then filtering, washing and distilling to obtain the nicotine salt;

[0045] The organic acid is one or more of malic acid, citric acid, benzoic acid, orotic acid, and salicylic acid.

[0046] In some embodiments, the molar ratio of nicotine to organic acid is 1.0-3.0, preferably, the molar ratio can be 1.0, 1.5, 2.0, 2.5 or 3.0.

[0047] In some embodiments, the solvent is one or more of ethanol, methanol, acetonitrile or carbon tetrachloride.

[0048] In some embodiments, the poor solvent is one or more of ethyl acetate, n-heptane or toluene.

[0049] In some embodiments, the application further provides a preparation method of a gas phase rust inhibitor containing nicotine and its derivatives, comprising the following steps:

[0050] S1. The gas phase corrosion inhibitor and the antibacterial agent are sequentially added to a container containing a certain volume of deionized water, and stirred at room temperature to fully mix and dissolve to obtain an inhibitor solution A;

[0051] S2. The thickening agent is slowly added to the inhibitor solution A, and continuously stirred until completely dissolved to obtain the gas phase rust inhibitor.

[0052] Further, the stirring speed in step S1 is 800-3000rpm, and the stirring time is 20-30min. The stirring speed in step S2 is 500-3000rpm, and the stirring time is 30-60min.

[0053] The third aspect of the application further provides the use of the above-mentioned gas phase rust inhibitor containing nicotine and its derivatives in the field of gas phase rust prevention. The gas phase rust inhibitor provided by the application can be brushed on neutral paper, dried and wrapped around metal products to prevent rusting.

[0054] The present application is described below in connection with specific embodiments as follows:

[0055] Example 1

[0056] A gas phase rust inhibitor with metal rust prevention effect is prepared by the following method:

[0057] Nicotine 16 and antibacterial agent 1 part are added into a beaker, 80 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 3 parts of polyethylene glycol is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust inhibitor.

[0058] Figure 1 The appearance of the iron pieces in the experimental group and the blank group after 7 cycles of gas phase identification test of the gas phase rust inhibitor prepared in Example 1 of the present application can be seen. It can be seen that after 7 cycles of test, the blank control group has obvious rust, while the iron pieces using the gas phase rust inhibitor have smooth surface and no rust.

[0059] Example 2

[0060] A gas phase rust inhibitor with metal rust prevention effect is prepared by the following method:

[0061] Nicotine benzoate 17 parts and antibacterial agent 1 part are added into a beaker in proportion, 80 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 2 parts of polyethylene glycol is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust inhibitor.

[0062] Example 3

[0063] A gas phase rust inhibitor with metal rust prevention effect is prepared by the following method:

[0064] Nicotine 10 parts, nicotine malate 3 parts, nicotine citrate 3 parts, nicotine benzoate 1 part and antibacterial agent 1 part are added into a beaker in proportion, 80 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 2 parts of sodium carboxymethyl cellulose is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust inhibitor.

[0065] Example 4

[0066] A gas phase rust paper with metal rust prevention effect is prepared by the following method:

[0067] Nicotine 5 parts, nicotine citrate 4 parts, nicotine lactate 4 parts, antibacterial agent 1 part are added into a beaker in proportion in turn, 84 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 2 parts of polyethylene glycol is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust preventive solution; the gas phase rust preventive solution is coated on neutral kraft paper by dip coating method, and dried to obtain a gas phase rust preventive paper.

[0068] Example 5

[0069] A gas phase rust preventive paper with metal rust prevention effect, the preparation method is as follows:

[0070] Nicotine 7 parts, nicotine malate 2 parts, nicotine benzoate 1.5 parts, nicotine salicylate 3 parts, and antibacterial agent 1 part are added into a beaker in proportion in turn, 85 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 1.5 parts of polyacrylamide is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust preventive solution; the gas phase rust preventive solution is coated on neutral kraft paper by dip coating method, and dried to obtain a gas phase rust preventive paper.

[0071] Example 6

[0072] A gas phase rust preventive paper with metal rust prevention effect, the preparation method is as follows:

[0073] Nicotine 15 parts, nicotine tartrate 1 part, nicotine lactate 1 part, nicotine salicylate 0.5 part, and antibacterial agent 1 part are added into a beaker in proportion in turn, 80 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 1.5 parts of carrageenan is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust preventive solution; the gas phase rust preventive solution is coated on neutral kraft paper by dip coating method, and dried to obtain a gas phase rust preventive paper.

[0074] Comparative Example 1

[0075] Urea 5 parts, sodium benzoate 5 parts, phytic acid 5 parts, and antibacterial agent 1 part are added into a beaker in proportion in turn, 82 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 2 parts of polyacrylamide is added into the inhibitor solution, and stirred at a speed of 1500 rpm for 60 min until completely dissolved to obtain a gas phase rust preventive solution; the gas phase rust preventive solution is coated on neutral kraft paper by dip coating method, and dried to obtain a gas phase rust preventive paper.

[0076] Comparative Example 2

[0077] Urea 15 parts, sodium benzoate 1 part, phytic acid 1 part, benzotriazole 0.5 part, antibacterial agent 1 part are added into a beaker in proportion in turn, 80 parts of deionized water is added and stirred to mix thoroughly to obtain an inhibitor solution; 1.5 parts of carrageenan is added into the inhibitor solution, and stirring is carried out at a rotating speed of 1500 rpm for 60 min until complete dissolution to obtain a gas phase rust preventive solution; the gas phase rust preventive solution is coated on neutral kraft paper by dip coating method, and the gas phase rust preventive paper is obtained after drying.

[0078] The gas phase rust preventive papers prepared in Examples 1, 2, 3, 4, 5, 6 and Comparative Examples 1, 2 are subjected to iron rust prevention performance test, and the test standard refers to QB / T 1319-2010, and the test results are as follows:

[0079]

[0080] Examples 1 and 2 are gas phase rust preventive papers prepared by using pure nicotine and nicotine salt respectively, and Examples 3, 4, 5 and 6 are rust preventive papers prepared by using gas phase rust preventive solutions containing different proportions of nicotine and nicotine derivatives, and the rust prevention effect is reduced when the content of nicotine and nicotine derivatives is low. However, the rust preventive paper prepared by the gas phase rust preventive solution of the present application realizes rust prevention for 8 cycles and above in the gas phase discrimination test, and reaches the requirements of the first-class product and above in the standard, and the gas phase corrosion inhibition capacity test is rust-free, which shows that the rust prevention performance of the rust preventive paper meets the market needs. At the same time, the comparison test results in the table show that the rust prevention effect of the gas phase rust preventive paper prepared by the gas phase corrosion inhibitor of the present application on iron metal is better than that of Comparative Examples 1 and 2 which do not contain nicotine and nicotine derivatives under the same proportion of gas phase corrosion inhibitor, and has certain market competitiveness.

[0081] In summary, the present application uses nicotine and nicotine salt as water-soluble gas phase corrosion inhibitor, which not only has excellent rust prevention effect, but also is green and degradable, and a high-efficiency and environment-friendly composite nicotine salt gas phase rust preventive paper is prepared, and the rust prevention period of the rust preventive paper in the gas phase discrimination test reaches 7 cycles and above, which meets the market needs.

[0082] It should be noted that the description of each of the above examples has its own emphasis, and the description of individual examples that is not exhaustive can be referred to the description of other examples.

[0083] The above-described examples only express the embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A vapor-phase rust inhibitor containing nicotine and its derivatives, characterized in that, The vapor phase rust inhibitor contains one or more of nicotine or nicotine salts.

2. The vapor-phase rust inhibitor containing nicotine and its derivatives according to claim 1, characterized in that, By weight, the vapor phase corrosion inhibitor comprises 10-80 parts of vapor phase corrosion inhibitor, 0.5-1 part of antibacterial agent, 1-2 parts of thickener, and 70-90 parts of water, wherein the vapor phase corrosion inhibitor is one or more of nicotine or nicotine salt.

3. The vapor-phase rust inhibitor containing nicotine and its derivatives according to claim 2, characterized in that, The nicotine salt is one or more of the following: nicotine malate, nicotine benzoate, nicotine citrate, nicotine tartrate, nicotine orotate, and nicotine salicylate.

4. The vapor-phase rust inhibitor containing nicotine and its derivatives according to claim 2, characterized in that, The thickener is one or more of sodium carboxymethyl cellulose, polyethylene glycol, polyacrylamide, carrageenan, and xanthan gum; the antibacterial agent is one or more of natamycin, tea polyphenols, curcumin, and chlortetracycline.

5. A vapor-phase rust inhibitor containing nicotine and its derivatives according to any one of claims 1-4, characterized in that, The method for preparing the nicotine salt includes: Step 1. Mix nicotine, organic acid, and solvent, and react at 40-80℃ for 7-10 hours to obtain solution A; Step 2. Add a poor solvent to solution A, and after filtration, washing, and distillation, obtain nicotine salt; The organic acid mentioned is one or more of malic acid, citric acid, benzoic acid, orotic acid, and salicylic acid.

6. The vapor-phase rust inhibitor containing nicotine and its derivatives according to claim 5, characterized in that, The molar ratio of nicotine to organic acid is 1.0-3.

0.

7. A vapor-phase rust inhibitor containing nicotine and its derivatives according to claim 5, characterized in that, The solvent is one or more of ethanol, methanol, acetonitrile, or carbon tetrachloride.

8. A vapor-phase rust inhibitor containing nicotine and its derivatives according to claim 5, characterized in that, The unsuitable solvent is one or more of ethyl acetate, n-heptane, and toluene.

9. A method for preparing a vapor-phase rust inhibitor containing nicotine and its derivatives according to any one of claims 1-8, characterized in that, Includes the following steps: S1. The vapor phase corrosion inhibitor and antibacterial agent are added sequentially according to their mass percentages into a container containing a certain volume of deionized water. The mixture is stirred at room temperature to ensure thorough mixing and dissolution, thus obtaining corrosion inhibitor solution A. S2. Slowly add the thickener to the corrosion inhibitor A and continue stirring until completely dissolved to obtain the vapor phase rust inhibitor.

10. The preparation method according to claim 9, characterized in that, In step S1, the stirring speed is 800-3000 rpm and the time is 20-30 min. In step S2, the stirring speed is 500-3000 rpm and the time is 30-60 min.

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