Novolac epoxy resin anticorrosive paint modified by chlorine-containing polymer and preparation method of novolac epoxy resin anticorrosive paint

Abstract

The invention belongs to the technical field of anticorrosive coatings, and particularly relates to a novolac epoxy resin anticorrosive coating modified by a chlorine-containing polymer and a preparation method of the novolac epoxy resin anticorrosive coating. Comprising a component A and a component B. The component A comprises the following raw materials by weight: 20-50 parts of novolac epoxy resin; 10-30 parts of a solvent (1: 10); 10 to 20 parts of a trichloroethylene by-product; 10 to 35 parts of pigment; 5-20 parts of an antirust material; 5 to 30 parts of filler; 3-5 parts of an auxiliary agent; the component B is prepared from the following raw materials in parts by weight: 60 to 80 parts of alicyclic amine curing agent; 10-30 parts of a solvent 2; and 1-5 parts of a curing accelerator. According to the chlorine-containing polymer modified novolac epoxy resin anticorrosive paint, a novolac epoxy resin anticorrosive coating material is modified by using a trichloro ethylene byproduct, so that the cost is reduced, the brittleness of a paint film is reduced, and meanwhile, the toughness, compactness and stability of the paint film are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a phenolic epoxy resin anti-corrosion coating modified by a chlorine-containing polymer and a preparation method thereof. Background Art

[0002] Steel is the most widely used and most commonly applied metal in human life, and its products will undergo various forms of corrosion under different usage environments.

[0003] At present, coating metal surfaces with anti-corrosion coatings is the most commonly used and cost-effective choice for metal corrosion protection. Currently, the commonly used anti-corrosion coatings mainly include chlorinated rubber, epoxy resin, polyurethane, polyester, phenolic epoxy, etc. Among them, phenolic epoxy series anti-corrosion coatings have been widely used in severe corrosion environments such as high temperature, acid and alkali, and solvent media due to their excellent heat resistance and salt spray resistance.

[0004] Phenolic epoxy resin anticorrosive coating is a high-performance coating that combines the advantages of phenolic resin and epoxy resin, showing excellent acid resistance, alkali resistance, solvent resistance, heat resistance and moisture and cold resistance. Therefore, it has been widely used in petrochemical, construction, power and other industries, especially in environments with high anticorrosion requirements. The coating has the following characteristics: First, high temperature resistance, can withstand temperatures up to 200°C, suitable for anticorrosion protection under high temperature conditions; second, excellent corrosion resistance, good resistance to a variety of acids, alkalis, solvents and oils, suitable for anticorrosion of the inner and outer walls of chemical equipment and pipelines; third, high strength and toughness, the film formed after the coating is cured has high mechanical strength and toughness, and can withstand a certain degree of physical impact and wear; fourth, good adhesion, can firmly adhere to a variety of substrates, including metals, concrete, etc.; fifth, thick coating construction is allowed, allowing the construction of thicker coatings to provide an additional layer of protection. Although phenolic epoxy anticorrosive coatings have excellent corrosion resistance, water resistance, acid and alkali resistance, high temperature resistance and quick drying properties, the paint film formed by them alone has poor flexibility and is prone to cracking and peeling.

[0005] In the process of producing trichloroethylene using acetylene as raw material, acetylene and chlorine are first introduced into the chlorination reactor at a molar ratio of 1:2.05, and tetrachloroethane is generated by reaction at a reaction temperature of 90-120°C and vacuum conditions with ferric chloride as a catalyst. Then, tetrachloroethane is dehydrochlorinated at a temperature of 180-280°C and under the action of a catalyst to generate trichloroethylene. This production process route is relatively environmentally friendly, but about 1% of high-boiling substances, oligomers and other by-products will still be produced during the production process. At present, all manufacturers hope to reuse this by-product in a high-value manner to achieve environmentally friendly and resource-saving production, thereby solving the environmental pollution problem caused by waste discharge and generating good social and economic benefits. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a phenolic epoxy resin anti-corrosion coating modified by a chlorine-containing polymer, and to modify the phenolic epoxy resin anti-corrosion coating material by using trichloroethylene byproducts, thereby reducing the cost and the brittleness of the paint film, and at the same time significantly improving the toughness, density and stability of the paint film;

[0007] Another object of the present invention is to provide a method for preparing a phenolic epoxy resin anticorrosive coating modified by a chlorine-containing polymer, which has a simple process and is easy to mass produce.

[0008] The technical solution adopted by the present invention is as follows:

[0009] The phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises a component A and a component B in a weight ratio of (4-5):1;

[0010] The component A comprises the following raw materials in parts by weight:

[0011] Phenolic epoxy resin: 20-50 parts;

[0012] Solvent 1: 10-30 parts;

[0013] Trichloroethylene byproduct: 10-20 parts;

[0014] Pigment: 10-35 parts;

[0015] Anti-rust material: 5-20 parts;

[0016] Filler: 5-30 parts;

[0017] Additives: 3-5 parts;

[0018] The component B comprises the following raw materials in parts by weight:

[0019] Alicyclic amine curing agent: 60-80 parts;

[0020] Solvent 2: 10-30 parts;

[0021] Curing accelerator: 1-5 parts.

[0022] The phenolic epoxy resin is F-51 phenolic epoxy resin, and the epoxy equivalent is 170-200g / ep;

[0023] The trichloroethylene by-product is obtained by the following method: the waste liquid produced by producing trichloroethylene with acetylene as raw material is subjected to low-temperature distillation at 50-60°C, volatiles are removed by nitrogen purging, the obtained low-temperature distillate is subjected to high-temperature distillation at 170-190°C, the high-temperature fraction is removed, and the residual components (the main components are chlorine-containing polymers with a viscosity-average molecular weight of more than 100,000, and a small amount of hydrolysis products of ferric chloride) are retained.

[0024] After low-temperature distillation of trichloroethylene waste liquid, about 10wt% of volatiles and 90wt% of low-temperature distillate are obtained. Subsequently, the low-temperature distillate is subjected to high-temperature distillation to obtain about 60wt% of high-temperature fractions and about 31wt% of residual components. The main components of the high-temperature fraction are ethylene dichloride, etc., which can be further recycled. The residual components mainly include chlorine-containing polymers with a viscosity-average molecular weight of more than 100,000, and also contain hydrolysis products of ferric chloride, which are extremely beneficial for improving the anti-corrosion performance of anti-corrosion coating materials.

[0025] The solvent 1 and the solvent 2 are both a mixture of one of n-butanol or isopropanol and xylene, and the mixing weight ratio is 1:(4-5).

[0026] The pigment is one or more of phthalocyanine blue, titanium dioxide, carbon black, iron oxide red or iron oxide gray.

[0027] The anti-rust material is a mixture of aluminum zinc polyphosphate, aluminum calcium polyphosphate and strontium chrome yellow, and the mixing weight ratio is (1-2): (1-3): (0.1-1).

[0028] The aluminum zinc polyphosphate is preferably WAL-C-08 aluminum zinc polyphosphate, and the aluminum calcium polyphosphate is preferably WAL-C-II aluminum calcium polyphosphate.

[0029] The filler is a mixture of barium sulfate, wollastonite and talc powder, and the mixing weight ratio is (1-2): (1-3): (0.5-1.5).

[0030] The auxiliary agent is a mixture of dispersant 983, organic clay, polyamide wax and fumed silica, and the mixing weight ratio is (0.2-1): (0.2-1): 1: 1. The organic clay, polyamide wax and fumed silica are used as anti-settling agents to improve the storage of the coating and the sag of the paint film.

[0031] The alicyclic amine curing agent is 9035.

[0032] The curing accelerator is DMP-30.

[0033] The method for preparing the phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises the following steps:

[0034] (1) mixing phenolic epoxy resin, solvent 1, trichloroethylene byproduct, pigment, rust-proof material, filler and additive, grinding, high-speed dispersing and filtering to obtain component A;

[0035] (2) mixing the alicyclic amine curing agent, solvent 2 and curing accelerator, dispersing at high speed and filtering to obtain component B;

[0036] (3) After mixing component A and component B, add a diluent, stir evenly, and mature to obtain a phenolic epoxy resin anti-corrosion coating modified with a chlorine-containing polymer.

[0037] In the step (3), the diluent is a mixture of one of n-butanol or isopropanol and xylene, and the mixing weight ratio is 1:(4-5); the amount of the diluent is 10-25wt.% of the total amount of component A and component B.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The preparation method of the chlorine-containing polymer modified phenolic epoxy resin anticorrosive coating of the present invention effectively enhances the flexibility and density of the coating film, improves the adhesion of the coating film, increases the thickness of the coating film, and improves the corrosion resistance of the coating film to media such as acid, alkali, and salt by using trichloroethylene byproducts as modifiers. In addition, the present invention also introduces antirust materials such as polyphosphate aluminum zinc, polyphosphate aluminum calcium, and strontium chrome yellow to modify the phenolic epoxy resin anticorrosive coating, thereby greatly improving its anticorrosive properties such as salt spray resistance and water resistance. By using different sizes and forms of functional fillers such as barium sulfate, wollastonite, and talcum powder, a dense stacking structure is formed by optimizing the mixing ratio, so that the coating is more dense, and the time for corrosive gases and liquids to penetrate the coating film can be significantly extended, providing excellent water resistance, salt spray resistance, acid resistance, and other medium resistance properties.

[0040] The chlorine-containing polymer modified phenolic epoxy resin anticorrosive coating prepared by the present invention can be widely used in many fields such as petrochemical equipment, urban infrastructure, offshore oil drilling platforms, cross-sea bridges, seawater desalination equipment, marine transportation, power generation equipment and power transmission and distribution towers, port terminal machinery and equipment, etc. DETAILED DESCRIPTION

[0041] The present invention is further described below with reference to the embodiments, but they do not limit the implementation of the present invention.

[0042] The raw materials used in the examples and comparative examples are conventional commercially available raw materials unless otherwise specified, and the process methods used in the examples and comparative examples are conventional methods in the art unless otherwise specified.

[0043] Some of the raw materials used in the examples and comparative examples are described as follows:

[0044] The trichloroethylene by-product is obtained by the following method: firstly, the waste liquid produced by producing trichloroethylene with acetylene as raw material is subjected to low-temperature distillation at 55°C, volatiles are removed by nitrogen purging, and the obtained low-temperature distillate is subjected to high-temperature distillation at 180°C, the high-temperature fraction is removed, and the residual components are retained to obtain the trichloroethylene by-product.

[0045] F-51 phenolic epoxy resin, epoxy equivalent weight 185 ± 15 g / ep, purchased from Shandong Sanmu Chemical Co., Ltd.;

[0046] WAL-C-08 aluminum zinc polyphosphate was purchased from Wuhan Aolin Environmental Protection Technology Co., Ltd.;

[0047] WAL-C-Ⅱ calcium aluminum polyphosphate was purchased from Wuhan Aolin Environmental Protection Technology Co., Ltd.;

[0048] Strontium chrome yellow, purchased from Jiangsu Shuangle Co., Ltd.;

[0049] Dispersant 983, purchased from Shanghai Kaiyin Chemical Co., Ltd.;

[0050] Polyamide wax, purchased from Qingdao Xutai Chemical Co., Ltd.;

[0051] Fumed silica was purchased from Qingdao Xutai Chemical Co., Ltd.

[0052] Alicyclic amine curing agent 9035, purchased from Suzhou HNSAT Industrial Co., Ltd.;

[0053] Curing accelerator DMP-30, purchased from Shandong Sanmu Chemical Co., Ltd.;

[0054] Epoxy resin E51, purchased from Shandong Sanmu Chemical Co., Ltd.;

[0055] Polyamide curing agent 650 was purchased from Shandong Sanmu Chemical Co., Ltd.

[0056] Example 1

[0057] The phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises a component A and a component B in a weight ratio of 4:1;

[0058] The component A is composed of the following raw materials in parts by weight:

[0059] F-51 phenolic epoxy resin: 30 parts;

[0060] Solvent 1: 12 parts;

[0061] Trichloroethylene by-product: 10 parts;

[0062] Pigment: 10 parts;

[0063] Anti-rust material: 5 parts;

[0064] Filling: 30 parts;

[0065] Additives: 3 parts;

[0066] The component B is composed of the following raw materials in parts by weight:

[0067] Alicyclic amine curing agent 9035: 70 parts;

[0068] Solvent 2: 25 parts;

[0069] Curing accelerator DMP-30: 5 parts.

[0070] Wherein, the pigment is a mixture of 9.9 parts of titanium dioxide and 0.1 parts of carbon black;

[0071] The rust-proof material is a mixture of 2 parts of WAL-C-08 aluminum zinc polyphosphate, 2 parts of WAL-C-Ⅱ aluminum calcium polyphosphate and 1 part of strontium chrome yellow;

[0072] The filler is a mixture of 10 parts of barium sulfate, 10 parts of wollastonite and 10 parts of talc;

[0073] The auxiliary agent is a mixture of 0.5 parts of dispersant 983, 0.5 parts of organic clay, 1 part of polyamide wax and 1 part of fumed silica;

[0074] The solvent 1 and the solvent 2 are both mixtures of n-butanol and xylene in a weight ratio of 1:4.

[0075] The preparation method of the phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises the following steps:

[0076] (1) F-51 phenolic epoxy resin, solvent 1, trichloroethylene byproduct, pigment, rust-proof material, filler and additive are mixed, and then ground, dispersed at high speed and filtered to obtain component A;

[0077] (2) mixing the alicyclic amine curing agent 9035, solvent 2 and curing accelerator DMP-30, dispersing at high speed and filtering to obtain component B;

[0078] (3) When using, mix component A and component B, add diluent, stir evenly, and mature for 0.5 hours to obtain the phenolic epoxy resin anti-corrosion coating modified by the chlorine-containing polymer. Spray or brush it onto the surface of the substrate to be coated within 6 hours.

[0079] In the step (3), the diluent is a mixture of n-butanol and xylene in a weight ratio of 1:4; the amount of the diluent is 10wt.% of the total amount of component A and component B.

[0080] Example 2

[0081] The phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises a component A and a component B in a weight ratio of 4:1;

[0082] The component A is composed of the following raw materials in parts by weight:

[0083] F-51 phenolic epoxy resin: 35 parts;

[0084] Solvent 1: 15 parts;

[0085] Trichloroethylene by-product: 11 parts;

[0086] Pigment: 10 parts;

[0087] Anti-rust material: 5 parts;

[0088] Filling: 21 parts;

[0089] Additives: 3 parts;

[0090] The component B is composed of the following raw materials in parts by weight:

[0091] Alicyclic amine curing agent 9035: 75 parts;

[0092] Solvent 2: 20 parts;

[0093] Curing accelerator DMP-30: 5 parts.

[0094] Wherein, the pigment is a mixture of 9.9 parts of titanium dioxide and 0.1 parts of carbon black;

[0095] The rust-proof material is a mixture of 2 parts of WAL-C-08 aluminum zinc polyphosphate, 2 parts of WAL-C-Ⅱ aluminum calcium polyphosphate and 1 part of strontium chrome yellow;

[0096] The filler is a mixture of 10 parts of barium sulfate, 5 parts of wollastonite and 6 parts of talc;

[0097] The auxiliary agent is a mixture of 0.5 parts of dispersant 983, 0.5 parts of organic clay, 1 part of polyamide wax and 1 part of fumed silica;

[0098] The solvent 1 and the solvent 2 are both mixtures of isopropanol and xylene in a weight ratio of 1:4.

[0099] The preparation method of the phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises the following steps:

[0100] (1) F-51 phenolic epoxy resin, solvent 1, trichloroethylene byproduct, pigment, rust-proof material, filler and additive are mixed, and then ground, dispersed at high speed and filtered to obtain component A;

[0101] (2) mixing the alicyclic amine curing agent 9035, solvent 2 and curing accelerator DMP-30, dispersing at high speed and filtering to obtain component B;

[0102] (3) When using, mix component A and component B, add diluent, stir evenly, and mature for 0.5 hours to obtain the phenolic epoxy resin anti-corrosion coating modified by the chlorine-containing polymer. Spray or brush it onto the surface of the substrate to be coated within 6 hours.

[0103] In the step (3), the diluent is a mixture of isopropanol and xylene in a weight ratio of 1:4; the amount of the diluent is 15wt.% of the total amount of component A and component B.

[0104] Example 3

[0105] The phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises a component A and a component B in a weight ratio of 5:1;

[0106] The component A is composed of the following raw materials in parts by weight:

[0107] F-51 phenolic epoxy resin: 40 parts;

[0108] Solvent 1: 15 parts;

[0109] Trichloroethylene by-product: 13 parts;

[0110] Pigment: 10 parts;

[0111] Anti-rust material: 5 parts;

[0112] Filling: 14 parts;

[0113] Additives: 3 parts;

[0114] The component B is composed of the following raw materials in parts by weight:

[0115] Alicyclic amine curing agent 9035: 80 parts;

[0116] Solvent 2: 15 parts;

[0117] Curing accelerator DMP-30: 5 parts.

[0118] Wherein, the pigment is a mixture of 9.9 parts of titanium dioxide and 0.1 parts of carbon black;

[0119] The rust-proof material is a mixture of 2 parts of WAL-C-08 aluminum zinc polyphosphate, 2 parts of WAL-C-Ⅱ aluminum calcium polyphosphate and 1 part of strontium chrome yellow;

[0120] The filler is a mixture of 5 parts of barium sulfate, 5 parts of wollastonite and 4 parts of talc;

[0121] The auxiliary agent is a mixture of 0.5 parts of dispersant 983, 0.5 parts of organic clay, 1 part of polyamide wax and 1 part of fumed silica;

[0122] The solvent 1 and the solvent 2 are both mixtures of n-butanol and xylene in a weight ratio of 1:5.

[0123] The preparation method of the phenolic epoxy resin anticorrosive coating modified by the chlorine-containing polymer comprises the following steps:

[0124] (1) F-51 phenolic epoxy resin, solvent 1, trichloroethylene byproduct, pigment, rust-proof material, filler and additive are mixed, and then ground, dispersed at high speed and filtered to obtain component A;

[0125] (2) mixing the alicyclic amine curing agent 9035, solvent 2 and curing accelerator DMP-30, dispersing at high speed and filtering to obtain component B;

[0126] (3) When using, mix component A and component B, add diluent, stir evenly, and mature for 0.5 hours to obtain the phenolic epoxy resin anti-corrosion coating modified by the chlorine-containing polymer. Spray or brush it onto the surface of the substrate to be coated within 6 hours.

[0127] In the step (3), the diluent is a mixture of n-butanol and xylene in a weight ratio of 1:5; the amount of the diluent is 20wt.% of the total amount of component A and component B.

[0128] Comparative Example 1

[0129] The difference from Example 1 is that the F-51 phenolic epoxy resin is replaced by an epoxy resin E51 of equal weight, and the rest is the same as Example 1.

[0130] Comparative Example 2

[0131] The difference from Example 1 is that the trichloroethylene by-product is replaced by 5 parts by weight of benzyl alcohol, and the rest is the same as Example 1.

[0132] Comparative Example 3

[0133] The difference from Example 1 is that the alicyclic amine curing agent 9035 is replaced by an equal weight portion of the polyamide curing agent 650, the weight ratio of component A to component B is 4:1.5, and the rest is the same as Example 1.

[0134] Comparative Example 4

[0135] The difference from Example 1 is that the F-51 phenolic epoxy resin is replaced by an equal weight portion of epoxy resin E51, the alicyclic amine curing agent 9305 is replaced by an equal weight portion of polyamide curing agent 650, the weight ratio of component A to component B is 4:1.5, and the rest is the same as Example 1.

[0136] The performance tests of the anticorrosive coatings prepared in Examples 1-3 and Comparative Examples 1-4 were performed respectively, and the test methods were as follows:

[0137] Viscosity (KU): Tested in accordance with GB / T 1732-2020;

[0138] Surface drying time (h): tested according to GB / T 1728-1979;

[0139] Drying time (h): Tested according to GB / T 1728-1979;

[0140] Adhesion (grade): tested according to GB / T 1720-2020;

[0141] Impact strength (kg cm): tested according to GB / T 1732-1993;

[0142] Flexibility (mm): Tested according to GB / T 6742-2007;

[0143] Sulfuric acid resistance: The anti-corrosion coating was applied on the sandblasted steel plate with a film thickness of 100 μm. The sandblasted steel plate coated with the anti-corrosion coating was then immersed in a 30% sulfuric acid solution at 25°C for 90 days and then taken out for observation.

[0144] Hydrochloric acid resistance: The anti-corrosion coating was applied on the sandblasted steel plate with a film thickness of 100 μm. The sandblasted steel plate coated with the anti-corrosion coating was then immersed in a 10% hydrochloric acid solution at 25°C for 90 days and then taken out for observation.

[0145] Alkali resistance: The anti-corrosion coating was applied on the sandblasted steel plate with a film thickness of 100 μm. The sandblasted steel plate coated with the anti-corrosion coating was then immersed in a 30% sodium hydroxide solution at 25°C for 90 days and then taken out for observation.

[0146] Salt water resistance: The anti-corrosion coating was applied on the sandblasted steel plate with a film thickness of 100 μm. The sandblasted steel plate coated with the anti-corrosion coating was then immersed in a 3% sodium chloride solution at 25°C for 90 days and then taken out for observation.

[0147] Salt spray resistance (2000h): tested according to GB / T 1771-2007;

[0148] Temperature resistance (200℃×300h): The anti-corrosion coating is applied on the sandblasted steel plate with a film thickness of 100μm. The sandblasted steel plate coated with the anti-corrosion coating is then stored at 200℃ for 300h and then taken out for observation.

[0149] The test results are shown in Table 1.

[0150] Table 1 Performance test results

[0151]

[0152] It can be seen from the test data in Table 1 that compared with Comparative Example 1 using E51 epoxy resin, Comparative Example 2 toughened with benzyl alcohol, Comparative Example 3 toughened with polyamide curing agent, and Comparative Example 4 toughened with E51 epoxy resin and polyamide curing agent, in Examples 1-3, due to the addition of chlorine-containing polymer for toughening, the viscosity of the system is increased, which is beneficial to the long-term storage stability of the coating, and at the same time does not affect its drying speed. The surface drying and actual drying speeds are faster, which helps to save painting hours; in addition, the adhesion, impact strength and flexibility of the anti-corrosion coating prepared in the embodiment are significantly better than those of the comparative example, and it has good corrosion resistance. After sulfuric acid resistance, hydrochloric acid resistance, alkali resistance, salt water resistance, salt spray resistance and temperature resistance tests, the anti-corrosion coating samples were normal, while the coating samples prepared in the comparative example all showed varying degrees of corrosion.

Claims

1. A phenolic epoxy resin anticorrosive coating modified by a chlorine-containing polymer, characterized in that: It comprises a component A and a component B in a weight ratio of (4-5):1; The component A comprises the following raw materials in parts by weight: Phenolic epoxy resin: 20-50 parts; Solvent 1: 10-30 parts; Trichloroethylene byproduct: 10-20 parts; Pigment: 10-35 parts; Anti-rust material: 5-20 parts; Filler: 5-30 parts; Additives: 3-5 parts; The component B comprises the following raw materials in parts by weight: Alicyclic amine curing agent: 60-80 parts; Solvent 2: 10-30 parts; Curing accelerator: 1-5 parts; The phenolic epoxy resin is F-51 phenolic epoxy resin, and the epoxy equivalent is 170-200g / ep; The trichloroethylene by-product is obtained according to the following method: the waste liquid produced from trichloroethylene using acetylene as raw material is subjected to low-temperature distillation at 50-60°C, volatiles are removed by nitrogen purging, the obtained low-temperature distillate is subjected to high-temperature distillation at 170-190°C, the high-temperature fraction is removed, and the residual components are retained to obtain the trichloroethylene by-product.

2. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The solvent 1 and the solvent 2 are both a mixture of one of n-butanol or isopropanol and xylene, and the mixing weight ratio is 1:(4-5).

3. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The pigment is one or more of phthalocyanine blue, titanium dioxide, carbon black, iron oxide red or iron oxide gray.

4. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The anti-rust material is a mixture of aluminum zinc polyphosphate, aluminum calcium polyphosphate and strontium chrome yellow, and the mixing weight ratio is (1-2): (1-3): (0.1-1).

5. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The filler is a mixture of barium sulfate, wollastonite and talc powder, and the mixing weight ratio is (1-2): (1-3): (0.5-1.5).

6. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The auxiliary agent is a mixture of dispersant 983, organic clay, polyamide wax and fumed silica, and the mixing weight ratio is (0.2-1):(0.2-1):1:

1.

7. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The alicyclic amine curing agent is 9035.

8. The phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 1, characterized in that: The curing accelerator is DMP-30.

9. A method for preparing a phenolic epoxy resin anticorrosive coating modified by a chlorine-containing polymer according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) mixing phenolic epoxy resin, solvent 1, trichloroethylene byproduct, pigment, rust-proof material, filler and additive, grinding, dispersing and filtering to obtain component A; (2) mixing the alicyclic amine curing agent, solvent 2 and curing accelerator, dispersing and filtering to obtain component B; (3) After mixing component A and component B, add a diluent, stir evenly, and mature to obtain a phenolic epoxy resin anti-corrosion coating modified with a chlorine-containing polymer.

10. The method for preparing the phenolic epoxy resin anticorrosive coating modified by chlorine-containing polymer according to claim 9, characterized in that: The diluent is a mixture of one of n-butanol or isopropanol and xylene, and the mixing weight ratio is 1:(4-5); the amount of the diluent is 10-25wt.% of the total amount of component A and component B.

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