Production and preparation method of coating with high corrosion resistance

Abstract

The invention relates to the technical field of coatings, in particular to a production and preparation method of a high-corrosion-resistance coating, which comprises the following steps: blending three kilograms of base material and 30% of diluent, using a reaction container with a stirring function, heating to a certain temperature, stirring and diluting to enable the base material mixture to be in a molten or dissolved state, and cooling to room temperature to obtain the high-corrosion-resistance coating. Adding 25% of a curing agent, and stirring again; heating to 60 DEG C, introducing nitrogen, dropwise adding N-methylallylamine at the same time, raising the temperature after dropwise adding, and continuing to react for 2 hours; and cooling the product to 40 DEG C, introducing nitrogen again, and adding 0.2% of a polymerization inhibitor. According to the present invention, the water-based epoxy resin with good water solubility can be prepared so as to prepare the coating material with high corrosion resistance, and compared with the traditional coating material, the coating material has characteristics of strong coating film adhesion, wear resistance, rapid drying, improved acid resistance, improved alkali resistance, improved salt fog resistance, difficult blistering and difficult peeling during the use, and the addition of the active anti-rust pigment provides the good storage stability of the coating material.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to a method for producing a coating with high anti-corrosion performance. Background Art

[0002] Metal equipment and hooks will be corroded and damaged under the long-term action of oxygen, water, electrolyte ions and other media, and in serious cases, even cause safety accidents. The application of paint can reduce this type of corrosion, and the application of paint is a very simple and low-cost anti-corrosion method. Therefore, paint with high anti-corrosion performance is the paint needed in the current market. Summary of the invention

[0003] The purpose of the present invention is to provide a method for producing a high anti-corrosion coating to solve the problem in the above background technology that the market needs a high anti-corrosion coating to reduce corrosion of metal objects.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A method for producing a high anti-corrosion coating is prepared according to the following steps:

[0006] 1) Mix three kilograms of base material and 30% of diluent in a reaction vessel with stirring function, heat to a certain temperature and stir to dilute the base material mixture, so that the base material mixture is in a melted or dissolved state, then add 25% of curing agent and stir again;

[0007] 2) When heated to 60°C, nitrogen was introduced and N-methylallylamine was added dropwise. After the temperature was raised, the reaction was continued for 2 hours.

[0008] 3) Cool the product to 40°C, introduce nitrogen again, add 0.2% polymerization inhibitor, slowly drop diethanolamine within 4 hours of reaction, then stir and cool to 40°C, add 12% acrylic acid, and neutralize to pH 6.5;

[0009] 4) Add deionized water and active anti-rust pigment, stir evenly at 30℃-40℃ for 5-15min;

[0010] 5) Add 10% cosolvent and 15-20% water, stir and mix thoroughly, add 0.1%-0.2% defoamer, 0.2-0.3% dispersant, 0.1-0.2% rheology regulator;

[0011] 6) Add thixotropic agent, corrosion inhibitor and adhesion promoter into the reaction container and stir and disperse;

[0012] 7) Filter the stirred and dispersed coating to remove impurities and particulate matter, and seal and package.

[0013] As a further description of the above technical solution:

[0014] The base material is an organic base material or an inorganic base material.

[0015] As a further description of the above technical solution:

[0016] The organic base material is epoxy resin E-44 or polyurethane resin.

[0017] As a further description of the above technical solution:

[0018] The inorganic base material is aluminum oxide or iron oxide.

[0019] As a further description of the above technical solution:

[0020] The N-methylallylamine:diethanolamine:epoxy resin E-44=1.00:1.05:1.00.

[0021] As a further description of the above technical solution:

[0022] The defoamer is BYK-034.

[0023] As a further description of the above technical solution:

[0024] The active anti-rust pigment is zinc powder, zinc phosphate or potassium zinc chromate.

[0025] Compared with the prior art, the present invention provides a method for producing a high anti-corrosion coating, which has the following beneficial effects:

[0026] The present invention can prepare a water-based epoxy resin with good water solubility, thereby preparing a coating with high anti-corrosion performance. Compared with traditional coatings, the coating has strong film adhesion, wear resistance, and fast drying speed. The acid and alkali resistance and salt spray resistance of the coating are improved. The coating is not easy to bubble or peel off during use, and the increase of active anti-rust pigments makes the coating have good storage stability. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example:

[0029] The present invention provides a method for producing a coating with high anti-corrosion performance, which is prepared according to the following steps:

[0030] 1) Mix three kilograms of base material and 30% of diluent in a reaction vessel with stirring function, heat to a certain temperature and stir to dilute the base material mixture, so that the base material mixture is in a melted or dissolved state, then add 25% of curing agent and stir again;

[0031] 2) When heated to 60°C, nitrogen was introduced and N-methylallylamine was added dropwise. After the temperature was raised, the reaction was continued for 2 hours.

[0032] 3) Cool the product to 40°C, introduce nitrogen again, add 0.2% polymerization inhibitor, slowly drop diethanolamine within 4 hours of reaction, then stir and cool to 40°C, add 12% acrylic acid, and neutralize to pH 6.5;

[0033] 4) Add deionized water and active anti-rust pigment, stir evenly at 30℃-40℃ for 5-15min;

[0034] 5) Add 10% cosolvent and 15-20% water, stir and mix thoroughly, add 0.1%-0.2% defoamer, 0.2-0.3% dispersant, 0.1-0.2% rheology regulator;

[0035] 6) Add thixotropic agent, corrosion inhibitor and adhesion promoter into the reaction container and stir and disperse;

[0036] 7) Filter the stirred and dispersed coating to remove impurities and particulate matter, and seal and package.

[0037] Specifically, the base material is an organic base material or an inorganic base material.

[0038] Specifically, the organic base material is epoxy resin E-44 or polyurethane resin.

[0039] Specifically, the inorganic base material is aluminum oxide or iron oxide.

[0040] Specifically, N-methylallylamine:diethanolamine:epoxy resin E-44=1.00:1.05:1.00.

[0041] Specifically, the defoaming agent is BYK-034.

[0042] Specifically, the active anti-rust pigment is zinc powder, zinc phosphate or potassium zinc chromate.

[0043] Working principle:

[0044] Prepare the mixture according to the ratio of 3 kg of epoxy resin E-44 base material and 30% of diluent, use a reaction container with stirring function, heat to a certain temperature and stir to dilute, so that the base material mixture is in a melted or dissolved state, and then add 25% of curing agent. Curing agent is an important reaction component in the preparation of coatings. Its addition will directly affect the film formation of coatings, improve the adhesion, wear resistance and drying speed of coatings, and help improve the acid, alkali and salt spray resistance of coatings. Once again, nitrogen is introduced when heated to 60°C, and N-methylallylamine is added dropwise at the same time. After the temperature rises after the addition, the reaction is continued for 2 hours, the product is cooled to 40°C, nitrogen is introduced again, 0.2% of inhibitor is added, and diethanolamine is slowly added dropwise within 4 hours of continued reaction, N-methylallylamine: diethanolamine: epoxy resin E-44 = 1.00:1.05:1. 00, then stirred and cooled to 40°C, added 12% acrylic acid, neutralized to pH 6.5, added deionized water, added zinc powder, zinc phosphate or potassium zinc chromate, stirred evenly for 5-15 minutes at 30°C-40°C, added 10% co-solvent and 15-20% water, stirred and mixed thoroughly, added 0.1%-0.2% BYK-034 defoamer, 0.2-0.3% dispersant, 0.1-0.2% rheology regulator, defoamer, dispersant, rheology regulator, which account for a small proportion in the coating, can effectively improve the coating production performance, storage performance, construction performance and film-forming performance of the coating, add thixotropic agent, corrosion inhibitor, adhesion promoter into the reaction vessel for stirring and dispersion, increase the adhesion and anti-corrosion properties of the coating, filter the coating obtained by stirring and dispersion, remove impurities and particulate matter, and seal and package.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for producing a high anti-corrosion coating, characterized in that: Prepare according to the following steps, 1) Mix three kilograms of base material and 30% of diluent in a reaction vessel with stirring function, heat to a certain temperature and stir to dilute the base material mixture, so that the base material mixture is in a melted or dissolved state, then add 25% of curing agent and stir again; 2) When heated to 60°C, nitrogen was introduced and N-methylallylamine was added dropwise. After the temperature was raised, the reaction was continued for 2 hours. 3) Cool the product to 40°C, introduce nitrogen again, add 0.2% polymerization inhibitor, slowly drop diethanolamine within 4 hours of reaction, then stir and cool to 40°C, add 12% acrylic acid, and neutralize to pH 6.5; 4) Add deionized water and active anti-rust pigment, stir evenly at 30℃-40℃ for 5-15min; 5) Add 10% cosolvent and 15-20% water, stir and mix thoroughly, add 0.1%-0.2% defoamer, 0.2-0.3% dispersant, 0.1-0.2% rheology regulator; 6) Add thixotropic agent, corrosion inhibitor and adhesion promoter into the reaction container and stir and disperse; 7) Filter the stirred and dispersed coating to remove impurities and particulate matter, and seal and package.

2. The method for producing a high anti-corrosion coating according to claim 1, characterized in that: The base material is an organic base material or an inorganic base material.

3. The method for producing a high anti-corrosion coating according to claim 2, characterized in that: The organic base material is epoxy resin E-44 or polyurethane resin.

4. The method for producing a high anti-corrosion coating according to claim 2, characterized in that: The inorganic base material is aluminum oxide or iron oxide.

5. The method for producing a high anti-corrosion coating according to claim 3, characterized in that: The N-methylallylamine:diethanolamine:epoxy resin E-44=1.00:1.05:1.

00.

6. The method for producing a high anti-corrosion coating according to claim 1, characterized in that: The defoamer is BYK-034.

7. The method for producing a high anti-corrosion coating according to claim 1, characterized in that: The active anti-rust pigment is zinc powder, zinc phosphate or potassium zinc chromate.