A polymer waterproof and anticorrosive coating and its preparation method

Abstract

The present invention relates to the technical field of polymer coatings, and discloses a polymer waterproof and anti-corrosion coating and a preparation method thereof. The preparation method comprises mixing polyaniline with a tetramethylamine reagent, performing a doping treatment, mixing with ethylene glycol ether, and stirring and dispersing the mixture uniformly to obtain a doped polyaniline solution; mixing a linseed oil-based epoxy polymer with a hardener and stirring the mixture uniformly, and then adding a nanofiller under stirring to obtain a base material; and adding the doped polyaniline solution to the base material under stirring, stirring the mixture uniformly to obtain the polymer waterproof and anti-corrosion coating. The present invention combines the excellent performance of doped polyaniline with the unique advantages of linseed oil-based epoxy polymers to successfully develop a high-performance coating that exhibits excellent performance in water resistance, corrosion resistance, adhesion, and flexibility, significantly improving the overall performance of the coating.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer coatings, and in particular to a polymer waterproof and anti-corrosion coating and a preparation method thereof. Background Art

[0002] In today's society, industrial production and construction are placing increasingly stringent and detailed demands on the waterproofing and anti-corrosion properties of materials. With the continuous advancement of technology and the expansion of application areas, traditional waterproof and anti-corrosion coatings can no longer fully meet the needs of modern industry and construction. Although a variety of traditional waterproof and anti-corrosion coatings are already available on the market, they often expose many shortcomings in actual application. For example, while some coatings excel in waterproofing and effectively prevent water penetration, they perform less well in terms of heat resistance and corrosion resistance. They cannot maintain stable performance in high-temperature environments and are difficult to resist the erosion of various chemicals. Other coatings, while excelling in certain properties, such as heat resistance or corrosion resistance, are difficult to apply in a wider market due to their high cost, thus limiting their popularity and promotion.

[0003] Therefore, developing innovative polymer waterproof and anti-corrosion coatings has become a pressing technological imperative. Such coatings must meet the stringent standards of the industrial and construction industries for waterproofing and corrosion resistance, while also exhibiting superior high-temperature and corrosion resistance. Only in this way can they maintain stability and durability in a variety of extreme environments, thereby improving the efficiency and safety of industrial production and construction. Summary of the Invention

[0004] In view of this, the present invention proposes a polymer waterproof and anti-corrosion coating and a preparation method thereof, aiming to provide a polymer waterproof and anti-corrosion coating with excellent comprehensive performance and reasonable cost to meet the waterproof and anti-corrosion needs of materials in the industrial and construction fields.

[0005] The present invention provides a method for preparing a polymer waterproof and anti-corrosion coating, comprising:

[0006] The polyaniline is mixed with a tetramethylamine reagent, subjected to a doping treatment, and then mixed with ethylene glycol ether, and stirred and dispersed uniformly to obtain a doped polyaniline solution;

[0007] After the linseed oil-based epoxy polymer and the hardener are mixed and stirred evenly, the nanofiller is added under stirring to obtain a base material;

[0008] Under stirring conditions, the doped polyaniline solution is added to the base material, and after stirring evenly, the polymer waterproof and anti-corrosion coating is obtained.

[0009] Preferably, the tetramethylamine reagent is tetramethylethylenediamine and / or tetramethylpropylenediamine;

[0010] The hardener is a phenalkamine hardener;

[0011] The nano fillers are nano silicon dioxide and nano aluminum oxide.

[0012] Preferably, the process of mixing polyaniline with tetramethylamine reagent for doping treatment includes:

[0013] Aniline is dissolved in an acidic aqueous solution, and then an oxidant is added to synthesize a hydrochloric acid-doped polyaniline. After the reaction is completed, the polyaniline powder is washed and dried to obtain the polyaniline powder.

[0014] The polyaniline powder is mixed with a tetramethylamine reagent solvent, and the mixture is stirred at room temperature for reaction. After the reaction is completed, the mixture is washed and dried to obtain the doped polyaniline.

[0015] Preferably, the preparation method of the linseed oil-based epoxy polymer comprises:

[0016] Linseed oil is used as a raw material to prepare a linseed oil-based epoxy monomer, and then the linseed oil-based epoxy monomer is polymerized into the linseed oil-based epoxy polymer through a ring-opening polymerization reaction.

[0017] Preferably, the process of preparing linseed oil-based epoxy monomer using linseed oil as raw material comprises:

[0018] After the linseed oil is pre-treated by dehydration, an epoxidant is added dropwise to the linseed oil at 30-50° C., and an epoxidation reaction is carried out using phosphotungstic acid as a catalyst to obtain the linseed oil-based epoxy monomer.

[0019] Preferably, the epoxidizing agent is peracetic acid;

[0020] The molar ratio of the peracetic acid to the linseed oil is 1.5-2.5:1.

[0021] Preferably, the process of polymerizing the linseed oil-based epoxy monomer to the linseed oil-based epoxy polymer comprises:

[0022] The linseed oil-based epoxy monomer and the tertiary amine catalyst are mixed, heated to 50-80° C., and then polymerized under continuous stirring to obtain the linseed oil-based epoxy polymer.

[0023] Preferably, the tertiary amine catalyst is N,N-dimethylethanolamine.

[0024] The present invention also proposes a polymer waterproof and anti-corrosion coating, which is prepared by the above-mentioned preparation method of the polymer waterproof and anti-corrosion coating.

[0025] The present invention also provides a protective coating product, which includes the above-mentioned polymer waterproof and anti-corrosion coating.

[0026] From a microscopic perspective, the principle mechanism of the technical solution of this invention is also reflected in the crosslinking density of the coating. The reaction of the linseed oil-based epoxy polymer and the hardener produces a highly crosslinked polymer network, which gives the coating excellent chemical and temperature resistance. At the same time, the introduction of doped polyaniline further increases the crosslinking density of the coating, thereby enhancing its overall physical and chemical stability. Specifically:

[0027] The introduction of doped polyaniline significantly improves the coating's electrical conductivity, thereby imparting excellent corrosion resistance. The conjugated structure formed during the doping process gives polyaniline excellent electron transport capabilities at the molecular level, which helps the coating form a protective film on the metal surface, effectively blocking the intrusion of external corrosive media.

[0028] Linseed oil-based epoxy polymer, the primary component of the binder, provides excellent adhesion and flexibility. Linseed oil, a natural oil, forms an epoxy polymer with a three-dimensional network structure through epoxidation of its unsaturated fatty acid chains. This structure not only imparts excellent mechanical properties to the coating but also improves chemical and weather resistance.

[0029] The addition of nanofillers further enhances the overall performance of the coating. Nanosilica and nanoalumina, with their extremely small particle sizes, are evenly dispersed throughout the base material, forming a dense filler network. This structure not only improves the coating's mechanical strength and abrasion resistance but also effectively reduces the coating's porosity, thereby enhancing its water-repellent properties.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This invention proposes a waterproof, anti-corrosion coating with exceptional durability and long-term stability. This coating is particularly suitable for use in a variety of harsh environments, such as those found at sea, in chemical plants, and on oil platforms. It significantly extends the coating's service life, enabling it to excel in these challenging environments. By incorporating doped polyaniline and nanofillers into the coating, the invention not only maintains the coating's excellent physical properties but also exhibits excellent electrochemical performance. This effectively prevents electrochemical corrosion of metal materials, thereby extending their service life.

[0032] The use of a linseed oil-based epoxy polymer in the coating imparts excellent biodegradability. This property makes the coating environmentally friendly, consistent with the principles of sustainable development, and meeting environmental protection requirements. During application, the coating exhibits excellent leveling and adhesion, forming a uniform, smooth coating. This not only enhances the coating's aesthetics but also its practicality, enabling it to excel in a variety of applications.

[0033] In addition, the coating of the present invention also has excellent temperature resistance and can operate stably in a wide temperature range of -40°C to 150°C. This characteristic enables the coating to meet application requirements in different environments, maintaining its stable performance in both extreme cold and high temperature conditions. In summary, the polymer waterproof and anti-corrosion coating of the present invention and its preparation method demonstrate significant technological innovation. It has brought significant economic and social benefits in practical applications, providing a new type of efficient, environmentally friendly, and economical material for related fields, with broad application prospects and market potential. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present disclosure will be described in more detail below. Although exemplary embodiments of the present disclosure are shown below, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features described in the embodiments can be combined with each other. The present invention will be described in detail below in conjunction with the embodiments. Example 1

[0035] This embodiment prepares a polymer waterproof and anti-corrosion coating, and the specific steps are as follows:

[0036] 1. Dissolve 100 g of aniline in 1000 ml of hydrochloric acid solution, then add 110 g of ammonium persulfate as an oxidant under stirring. After reacting at room temperature for 2 hours, wash and dry the resulting polyaniline hydrochloride-doped product to obtain polyaniline powder.

[0037] 2. The obtained polyaniline powder was mixed with 200 ml of tetramethylethylenediamine and stirred at room temperature for 4 hours. After the reaction was completed, the mixture was washed and dried again to obtain doped polyaniline.

[0038] 3. Using linseed oil as raw material, it is first dehydrated and pretreated. Then, peracetic acid is added dropwise to the linseed oil at a molar ratio of 2:1 at 40°C, and epoxidation is carried out using phosphotungstic acid as a catalyst to obtain a linseed oil-based epoxy monomer.

[0039] 4. The obtained linseed oil-based epoxy monomer was mixed with N,N-dimethylethanolamine catalyst, and the mixture was heated to 60°C and polymerized under continuous stirring to obtain a linseed oil-based epoxy polymer.

[0040] 5. 100 g of linseed oil-based epoxy polymer and 50 g of phenolic amine hardener were mixed and stirred uniformly, and then 50 g of nano-silicon dioxide and 50 g of nano-aluminum oxide were added under stirring to obtain a base material.

[0041] 6. Under stirring conditions, add 200 ml of doped polyaniline solution to the above base material and stir evenly to obtain a polymer waterproof and anti-corrosion coating. Example 2

[0042] This example partially adjusts the steps in Example 1 to optimize the performance of the coating:

[0043] 1. Dissolve 120 g of aniline in 1200 ml of hydrochloric acid. Then, add 130 g of potassium persulfate as an oxidant while stirring. After reacting at room temperature for 2.5 hours, wash and dry the resulting polyaniline hydrochloride-doped product to obtain polyaniline powder.

[0044] 2. The obtained polyaniline powder was mixed with 250 ml of tetramethylpropylenediamine and stirred at room temperature for 4.5 hours. After the reaction was completed, the mixture was washed and dried again to obtain doped polyaniline.

[0045] 3. Using linseed oil as raw material, it is first dehydrated and pretreated. Then, peracetic acid is added dropwise to the linseed oil at a molar ratio of 2.2:1 at 45°C, and epoxidation is carried out using phosphotungstic acid as a catalyst to obtain a linseed oil-based epoxy monomer.

[0046] 4. The obtained linseed oil-based epoxy monomer was mixed with N,N-dimethylethanolamine catalyst, and the mixture was heated to 70°C and polymerized under continuous stirring to obtain a linseed oil-based epoxy polymer.

[0047] 5. 110 g of linseed oil-based epoxy polymer and 60 g of phenolic amine hardener were mixed and stirred uniformly, and then 60 g of nano-silicon dioxide and 60 g of nano-aluminum oxide were added under stirring to obtain a base material.

[0048] 6. Under stirring conditions, add 250 ml of the doped polyaniline solution to the above base material and stir evenly to obtain a polymer waterproof and anti-corrosion coating. Example 3

[0049] In this example, we further optimized the formulation in Example 2 to improve the weather resistance and adhesion of the coating:

[0050] 1. Dissolve 150 g of aniline in 1500 ml of hydrochloric acid. Then, add 150 g of sodium persulfate as an oxidant while stirring. After reacting at room temperature for 3 hours, wash and dry the resulting polyaniline hydrochloride-doped product to obtain polyaniline powder.

[0051] 2. The resulting polyaniline powder was mixed with 300 ml of a 1:1 mixture of tetramethylethylenediamine and tetramethylpropylenediamine and stirred at room temperature for 5 hours. After the reaction was complete, the mixture was washed and dried to obtain doped polyaniline.

[0052] 3. Using linseed oil as raw material, it is first dehydrated and pretreated. Then, peracetic acid is added dropwise to the linseed oil at a molar ratio of 2.5:1 at 50°C, and epoxidation is carried out using phosphotungstic acid as a catalyst to obtain a linseed oil-based epoxy monomer.

[0053] 4. The obtained linseed oil-based epoxy monomer was mixed with N,N-dimethylethanolamine catalyst, and the temperature was raised to 80°C. A polymerization reaction was carried out under continuous stirring to obtain a linseed oil-based epoxy polymer.

[0054] 5. 120 g of linseed oil-based epoxy polymer and 70 g of phenolic amine hardener were mixed and stirred uniformly, and then 70 g of nano-silicon dioxide and 70 g of nano-alumina were added under stirring to obtain a base material.

[0055] 6. Under stirring conditions, add 300 ml of doped polyaniline solution to the above base material and stir evenly to obtain a polymer waterproof and anti-corrosion coating.

[0056] The above three embodiments all demonstrate the preparation method of the polymer waterproof and anti-corrosion coating of the present invention. By optimizing the raw material ratio and reaction conditions, a coating product with excellent performance can be prepared.

[0057] The following comparative examples are provided to further illustrate the superiority of the preparation method of the present invention.

[0058] Comparative Example 1

[0059] This comparative example does not use linseed oil-based epoxy monomers, but uses traditional petroleum-based epoxy monomers to prepare polymer waterproof and anti-corrosion coatings. The specific steps are as follows:

[0060] 1. Dissolve 100 g of aniline in 1000 ml of hydrochloric acid solution, then add 110 g of ammonium persulfate as an oxidant under stirring. After reacting at room temperature for 2 hours, wash and dry the resulting polyaniline hydrochloride-doped product to obtain polyaniline powder.

[0061] 2. The obtained polyaniline powder was mixed with 200 ml of tetramethylethylenediamine and stirred at room temperature for 4 hours. After the reaction was completed, the mixture was washed and dried again to obtain doped polyaniline.

[0062] 3. Using petroleum-based epoxy monomer as raw material, the petroleum-based epoxy monomer is mixed with N,N-dimethylethanolamine catalyst, and then the temperature is raised to 60°C. A polymerization reaction is carried out under continuous stirring conditions to obtain a petroleum-based epoxy polymer.

[0063] 4. 100 g of petroleum-based epoxy polymer and 50 g of phenolic amine hardener were mixed and stirred evenly, and then 50 g of nano-silica and 50 g of nano-alumina were added under stirring to obtain a base material.

[0064] 5. Under stirring conditions, add 200 ml of doped polyaniline solution to the above base material and stir evenly to obtain a polymer waterproof and anti-corrosion coating.

[0065] Comparative Example 2

[0066] In this comparative example, no doped polyaniline was used. Instead, polyaniline powder was directly mixed with a base material to prepare a polymer waterproof and anti-corrosion coating. The specific steps are as follows:

[0067] 1. Dissolve 100 g of aniline in 1000 ml of hydrochloric acid solution, then add 110 g of ammonium persulfate as an oxidant under stirring. After reacting at room temperature for 2 hours, wash and dry the resulting polyaniline hydrochloride-doped product to obtain polyaniline powder.

[0068] 2. The obtained polyaniline powder was mixed with 200 ml of tetramethylethylenediamine and stirred at room temperature for 4 hours. After the reaction was completed, the mixture was washed and dried again to obtain doped polyaniline.

[0069] 3. Using linseed oil as raw material, it is first dehydrated and pretreated. Then, peracetic acid is added dropwise to the linseed oil at a molar ratio of 2:1 at 40°C, and epoxidation is carried out using phosphotungstic acid as a catalyst to obtain a linseed oil-based epoxy monomer.

[0070] 4. The obtained linseed oil-based epoxy monomer was mixed with N,N-dimethylethanolamine catalyst, and the mixture was heated to 60°C and polymerized under continuous stirring to obtain a linseed oil-based epoxy polymer.

[0071] 5. 100 g of linseed oil-based epoxy polymer and 50 g of phenolic amine hardener were mixed and stirred uniformly, and then 50 g of nano-silicon dioxide and 50 g of nano-aluminum oxide were added under stirring to obtain a base material.

[0072] 6. Add 100 grams of polyaniline powder directly to the above base material and stir evenly to obtain a polymer waterproof and anti-corrosion coating.

[0073] Comparative Example 3

[0074] This comparative example does not use nano-silicon dioxide and nano-aluminum oxide, but only uses linseed oil-based epoxy polymer and doped polyaniline to prepare a polymer waterproof and anti-corrosion coating. The specific steps are as follows:

[0075] 1. Dissolve 100 g of aniline in 1000 ml of hydrochloric acid solution, then add 110 g of ammonium persulfate as an oxidant under stirring. After reacting at room temperature for 2 hours, wash and dry the resulting polyaniline hydrochloride-doped product to obtain polyaniline powder.

[0076] 2. The obtained polyaniline powder was mixed with 200 ml of tetramethylethylenediamine and stirred at room temperature for 4 hours. After the reaction was completed, the mixture was washed and dried again to obtain doped polyaniline.

[0077] 3. Using linseed oil as raw material, it is first dehydrated and pretreated. Then, peracetic acid is added dropwise to the linseed oil at a molar ratio of 2:1 at 40°C, and epoxidation is carried out using phosphotungstic acid as a catalyst to obtain a linseed oil-based epoxy monomer.

[0078] 4. The obtained linseed oil-based epoxy monomer was mixed with N,N-dimethylethanolamine catalyst, and the mixture was heated to 60°C and polymerized under continuous stirring to obtain a linseed oil-based epoxy polymer.

[0079] 5. Mix 100 g of linseed oil-based epoxy polymer and 50 g of phenalkamine hardener and stir well to obtain a base material.

[0080] 6. Under stirring conditions, add 200 ml of doped polyaniline solution to the above base material and stir evenly to obtain a polymer waterproof and anti-corrosion coating.

[0081] Test Example 1

[0082] The coatings prepared in Examples 1-3 of the present invention and Comparative Examples 1-3 were subjected to performance testing, including testing of indicators such as water resistance, corrosion resistance, adhesion and flexibility.

[0083] Judging criteria and testing methods include:

[0084] 1. Water resistance

[0085] 1. Test method

[0086] Immersion test: Soak the paint sample in water for a certain period of time (24 hours) and observe whether there is peeling, blistering or other changes on the surface.

[0087] Wet heat test: The coating samples are placed in a high humidity and high temperature environment (85% humidity, 60°C) to test the stability and water resistance of the coating.

[0088] 2. Evaluation Criteria

[0089] Excellent: The coating shows no noticeable changes when immersed in water or exposed to high humidity environments, with no blistering, peeling, or other damage to the surface, and effectively prevents water penetration.

[0090] Good: The coating undergoes minor changes in water immersion or high humidity environments, but does not affect the main performance.

[0091] General: The coating shows visible damage or penetration from water immersion or high humidity, affecting the functionality of the coating.

[0092] 2. Corrosion resistance

[0093] 1. Test method

[0094] Salt spray test: Place the coating sample in a salt spray test chamber (5% sodium chloride solution, 35°C) and check the corrosion of the coating regularly.

[0095] Acid and alkali corrosion test: Expose the coating sample to acidic or alkaline solution (sulfuric acid, sodium hydroxide) to observe its corrosion resistance.

[0096] 2. Evaluation Criteria

[0097] Excellent: The coating shows no obvious corrosion when exposed to corrosive media (salt spray, acid and alkali solutions), and the coating remains intact.

[0098] Good: The paint has slight corrosion in corrosive media, but it does not affect the main performance.

[0099] General: The coating shows obvious corrosion, peeling or damage in corrosive media, which reduces the protective ability of the coating.

[0100] 3. Adhesion

[0101] 1. Test method

[0102] Cross-hatch test: Scratch a grid on the paint surface (using a knife), then apply tape and quickly remove it to check if the coating has fallen off.

[0103] Pull-off test: Use a pull-off instrument to perform a pull-off test on the coating to measure the adhesion of the coating.

[0104] 2. Evaluation Criteria

[0105] Excellent: The coating has strong adhesion to the substrate and is not easy to peel or fall off.

[0106] Good: The paint has good adhesion and may peel slightly, but it does not affect the main performance.

[0107] General: The paint has poor adhesion and is prone to peeling or falling off, affecting the effectiveness of the coating.

[0108] 4. Flexibility

[0109] 1. Test method

[0110] Bend test: Bend the paint sample to a certain angle (180 degrees) and observe whether there is cracking, peeling or other damage.

[0111] Impact test: Impact test is performed on the coating samples to evaluate their flexibility and impact resistance under stress conditions.

[0112] 2. Evaluation Criteria

[0113] Excellent: The coating has good flexibility and will not crack or peel during bending or deformation.

[0114] Good: The coating has a certain degree of flexibility and may have slight cracks during bending or deformation, but it does not affect the main performance.

[0115] General: The coating has poor flexibility and is prone to cracking or peeling during bending or deformation, affecting the integrity of the coating.

[0116] The test results are shown in Table 1: Table 1

[0117]

[0118] According to the data in Table 1, we can observe that the coatings of Examples 1-3 all exhibit excellent performance in terms of water resistance, corrosion resistance, adhesion, and flexibility, and all meet or exceed the excellent standards. In contrast, the coatings of Control Examples 1-3 have mixed performances on these performance indicators. Specifically, the water resistance and corrosion resistance of Control Example 1 meet good standards, but its adhesion and flexibility are only average; Control Example 2 is average in all these performance indicators; and although Control Example 3 meets excellent standards in water resistance and corrosion resistance, its adhesion and flexibility are still average. These results show that the embodiments of the present invention are superior to the control examples in all performance indicators, showing superior comprehensive performance.

[0119] From a microscopic perspective, the outstanding performance of the polymer waterproof and anti-corrosion coating of the present invention is primarily due to its unique formulation and preparation process. The introduction of doped polyaniline significantly improves the coating's corrosion resistance and adhesion. As a conductive polymer, polyaniline in its doped form effectively shields and resists the attack of corrosive media, thereby protecting the underlying substrate from corrosion. Furthermore, the addition of doped polyaniline enhances the adhesion between the coating and the substrate, allowing the coating to adhere more firmly to the substrate surface.

[0120] The use of a linseed oil-based epoxy polymer imparts excellent flexibility and water resistance to the coating. Linseed oil itself possesses excellent flexibility and water resistance. The epoxidation reaction introduces epoxy groups into its molecular structure, further enhancing its compatibility with the doped polyaniline and resulting in a coating with improved overall performance. The presence of epoxy groups not only increases the coating's crosslinking density but also enhances its mechanical strength and chemical resistance.

[0121] During the preparation process, controlled reaction conditions and catalyst usage ensured uniform mixing and sufficient reaction between the linseed oil-based epoxy monomer and the doped polyaniline, resulting in a high-performance waterproof and anti-corrosion polymer coating. Furthermore, the addition of N,N-dimethylethanolamine catalyst played a key role in the polymerization reaction, not only promoting the polymerization of the epoxy monomer but also increasing the molecular weight of the polymer, thereby enhancing the overall performance of the coating.

[0122] In summary, the polymer waterproof and anti-corrosion coating of the present invention, through its unique formulation and preparation process, successfully combines the advantages of doped polyaniline and linseed oil-based epoxy polymer, resulting in a high-performance coating that exhibits excellent water resistance, corrosion resistance, adhesion, and flexibility. This coating is not only suitable for various industrial and civilian applications, but also offers advantages such as environmental friendliness, cost-effectiveness, and ease of application, thus possessing broad market application prospects.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a polymer waterproof and anti-corrosion coating, characterized in that: include: The polyaniline is mixed with a tetramethylamine reagent, subjected to a doping treatment, and then mixed with ethylene glycol ether, and stirred and dispersed uniformly to obtain a doped polyaniline solution; After the linseed oil-based epoxy polymer and the hardener are mixed and stirred evenly, the nanofiller is added under stirring to obtain a base material; Under stirring conditions, adding the doped polyaniline solution to the base material, and stirring evenly to obtain the polymer waterproof and anti-corrosion coating; The process of doping polyaniline with tetramethylamine reagents includes: Aniline is dissolved in an acidic aqueous solution, and then an oxidant is added to synthesize a hydrochloric acid-doped polyaniline. After the reaction is completed, the polyaniline powder is washed and dried to obtain the polyaniline powder. After mixing polyaniline powder with a tetramethylamine reagent solvent, stirring and reacting at room temperature, washing and drying after the reaction is completed to obtain doped polyaniline; The preparation method of the linseed oil-based epoxy polymer comprises: Linseed oil is used as a raw material to prepare a linseed oil-based epoxy monomer, and then the linseed oil-based epoxy monomer is polymerized into the linseed oil-based epoxy polymer through a ring-opening polymerization reaction.

2. The method for preparing a polymer waterproof and anticorrosive coating according to claim 1, characterized in that: The tetramethylamine reagent is tetramethylethylenediamine and / or tetramethylpropylenediamine; The hardener is a phenalkamine hardener; The nano fillers are nano silicon dioxide and nano aluminum oxide.

3. The method for preparing a polymer waterproof and anticorrosive coating according to claim 1, characterized in that: The process of preparing linseed oil-based epoxy monomer using linseed oil as raw material includes: After the linseed oil is pre-treated by dehydration, an epoxidant is added dropwise to the linseed oil at 30-50° C., and an epoxidation reaction is carried out using phosphotungstic acid as a catalyst to obtain the linseed oil-based epoxy monomer.

4. The method for preparing a polymer waterproof and anticorrosive coating according to claim 3, characterized in that: The epoxidizing agent is peracetic acid; The molar ratio of the peracetic acid to the linseed oil is 1.5-2.5:

1.

5. The method for preparing a polymer waterproof and anticorrosive coating according to claim 1, characterized in that: The process of polymerizing the linseed oil-based epoxy monomer to the linseed oil-based epoxy polymer comprises: The linseed oil-based epoxy monomer and the tertiary amine catalyst are mixed, heated to 50-80° C., and then polymerized under continuous stirring to obtain the linseed oil-based epoxy polymer.

6. The method for preparing a polymer waterproof and anticorrosive coating according to claim 5, characterized in that: The tertiary amine catalyst is N,N-dimethylethanolamine.

7. A polymer waterproof and anti-corrosion coating, characterized in that: The polymer waterproof and anti-corrosion coating is prepared by the preparation method of the polymer waterproof and anti-corrosion coating according to any one of claims 1 to 6.

8. A protective coating product, characterized in that: The protective coating product includes the polymer waterproof and anti-corrosion coating according to claim 7.

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