Aqueous acrylic resin-based rotor antirust agent and its processing method

Abstract

The present application relates to the technical field of rust preventive, in particular to a water-based acrylic resin rotor rust preventive and a processing method thereof.The water-based acrylic resin rotor rust preventive comprises the following raw materials: 50-60 parts of modified acrylic resin, 10-20 parts of deionized water, 0.1-0.2 parts of dimethyl ethanolamine, 4-6 parts of barium sulfate, 10-15 parts of mica iron oxide, 0.1-0.3 parts of dispersing agent, 0.1-0.2 parts of defoaming agent, 0.1-0.3 parts of leveling agent and 1-3 parts of film-forming aid by weight fraction.The present application combines rust preventive A and rust preventive B in the water-based acrylic resin to play a synergistic effect, thereby preparing the water-based acrylic resin rotor rust preventive with excellent rust prevention and adhesion, and excellent corrosion resistance and hydrophobicity.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of rust-proof agents, in particular to a water-based acrylic resin rotor rust-proof agent and a processing method thereof. BACKGROUND

[0002] With the rapid development of industry, metal materials have been widely used in various fields. As a key component in many mechanical devices, the rust-proof problem of the rotor is crucial. Traditional rust-proof agents are mostly solvent-based, which have good protective performance, but due to the release of volatile organic compounds (VOCs), they have a serious impact on the environment and human health, and are gradually restricted. In contrast, water-based acrylic resin rust-proof agents mainly contain water and do not contain harmful substances such as organic solvents and heavy metals, and have the advantages of environmental protection, safety, low cost, convenient removal of residues and the like, and therefore are widely concerned.

[0003] However, the rust-proof effect of some water-based acrylic resin rust-proof agents in natural environment or specific working conditions is limited, and it is difficult to meet the long-term rust-proof requirement. For example, some rust-proof agents can only maintain rust-proof effect for several weeks in natural environment, which cannot meet the rust-proof requirement of the rotor in long-term outdoor or harsh environment. In order to solve the problems of poor water resistance, flash rusting and low metal wet adhesion of the acrylic emulsion, we propose a water-based acrylic resin rotor rust-proof agent and a processing method thereof. SUMMARY

[0004] The purpose of the present application is to provide a water-based acrylic resin rotor rust-proof agent and a processing method thereof to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A processing method of a water-based acrylic resin rotor rust-proof agent, comprising the following steps:

[0007] Step 1: uniformly mix 1-(2-hydroxyethyl)-2-oleic acid imidazoline and perfluoropolyether carboxylic acid and toluene, add p-toluenesulfonic acid and hydroquinone, and react at 115-120 DEG C for 5-7 h, then distill under reduced pressure to obtain rust-proof agent A;

[0008] Step 2: disperse the double bond-containing tannic acid in deionized water, stir for 10-20 min, add a mixed solution of phosphoric acid and penetrant, and stir uniformly to obtain a modified tannic acid solution; disperse the carbon nanotubes in the modified tannic acid solution, ultrasonically disperse for 2-3 h, centrifuge and dry to obtain rust-proof agent B;

[0009] Step three: mix styrene, acrylic acid, rust inhibitor A, rust inhibitor B, methyl methacrylate-2-hydroxyethyl, methyl methacrylate and butyl acrylate uniformly, add ammonium persulfate and mix uniformly to obtain a mixture; mix deionized water and composite emulsifier uniformly, heat to 75-80℃, add 1 / 3 mass fraction of the mixture dropwise, drop for 30-40min, react for 0.5-1.0h; continue to add the remaining mixture, drop for 2-3h, react at 85-90℃ for 2-3h, cool to 45-55℃, neutralize with triethylamine, filter to obtain a modified acrylic resin;

[0010] Step four: mix the modified acrylic resin and deionized water uniformly, add dimethyl ethanolamine, dispersant, defoaming agent, leveling agent, film forming aid, barium sulfate, mica and iron oxide mixed uniformly to obtain a water-based acrylic resin-based rotor rust inhibitor.

[0011] Further, in step one, the mass ratio of 1-(2-hydroxyethyl)-2-oleic acid imidazoline, perfluoropolyether carboxylic acid and toluene is 1:(1.5-3.0):(3-5).

[0012] Further, the preparation steps of 1-(2-hydroxyethyl)-2-oleic acid imidazoline are as follows: mix oleic acid, hydroxyethyl ethylenediamine and dimethylbenzene uniformly, react at 150-160℃ for 5-7h, continue to heat to 210-220℃, react for 3-5h to obtain 1-(2-hydroxyethyl)-2-oleic acid imidazoline.

[0013] Further, the mass ratio of oleic acid, hydroxyethyl ethylenediamine and dimethylbenzene is 1:(0.4-0.5):(0.7-1.0).

[0014] Further, in step one, the mass of p-toluenesulfonic acid and hydroquinone is 3-5% and 0.1-0.3% of the total mass of 1-(2-hydroxyethyl)-2-oleic acid imidazoline and perfluoropolyether carboxylic acid, respectively.

[0015] Further, in step two, the mass ratio of double bond-containing tannic acid, deionized water, phosphoric acid and penetrant is 1:(25-50):(1-2):(0.01-0.03).

[0016] Further, in step two, the preparation steps of double bond-containing tannic acid are as follows: mix tannic acid, triphenylphosphine, hydroquinone and ethyl acetate uniformly, add glycidyl methacrylate, react at 85-95℃ for 22-24h, purify, dry to obtain double bond-containing tannic acid.

[0017] Further, the mass ratio of the tannic acid, triphenylphosphine, hydroquinone, ethyl acetate and glycidyl methacrylate is 1: (0.05-0.07): (0.003-0.005): (2-4): (2-3).

[0018] Further, in the step two, the mass ratio of the carbon nanotube and the modified tannic acid solution is 1: (30-50).

[0019] Further, in the step three, the amount of each component is as follows: styrene 8-12 parts, acrylic acid 2-4 parts, anti-rust agent A 4-6 parts, anti-rust agent B 3-5 parts, methyl methacrylate-2-hydroxyethyl 10-15 parts, methyl methacrylate 5-8 parts, butyl acrylate 4-6 parts, ammonium persulfate 1-3 parts, deionized water 50-70 parts, and composite emulsifier 0.2-0.6 parts.

[0020] Further, the composite emulsifier is uniformly mixed by sodium dodecyl sulfate and OP-10 at a mass ratio of 1: (1-2).

[0021] Further, the corrosion-resistant coating comprises the following raw materials: modified acrylic resin 50-60 parts, deionized water 10-20 parts, dimethyl ethanolamine 0.1-0.2 parts, barium sulfate 4-6 parts, mica iron oxide 10-15 parts, dispersant 0.1-0.3 parts, defoamer 0.1-0.2 parts, leveling agent 0.1-0.3 parts, and film-forming aid 1-3 parts.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] The application discloses a kind of water-based acrylic resin base rotor antirust agent and its processing method, using oleic acid and hydroxyethyl ethylenediamine synthesis with double bond 1-(2-hydroxyethyl)-2-oleic acid imidazoline, then with perfluoropolyether carboxylic acid, obtain antirust agent A, introduce fluorine-containing chain segment, give material excellent hydrophobicity, while introducing active double bond and imidazoline structure, significantly improve the interaction between antirust agent A and metal surface force, to enhance the strength of the adsorption film formed by antirust agent on metal surface.This improvement makes the antirust effect more durable and reliable, can effectively resist corrosion.

[0024] Tannic acid (TA) is a kind of macromolecular polyphenol compound, has excellent anticorrosive effect, using tannic acid and glycidyl methacrylate (GMA) carry out ring-opening reaction, prepared with active double bond tannic acid, not only retain the corrosion and passivation ability of tannic acid itself, while phosphoric acid and tannin combination significantly improve the antirust performance of rotor, and through π-π non-covalent bond effect makes it adsorbed on carbon nanotube, obtain antirust agent B,

[0025] The active double bonds are introduced into the molecules of the rust-proof agents A and B, so that the rust-proof agents can participate in the reaction and be chemically bonded to the resin molecular chain during the polymerization of the acrylic resin to obtain the water-based acrylic resin. By combining the rust-proof agent A and the rust-proof agent B in the water-based acrylic resin, the overall performance of the rust-proof agent is improved, and the rust-proof agent can better cope with corrosion challenges in different environments and provide more comprehensive protection. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that there is no special limitation on the purchase manufacturers of all raw materials involved in the present application. Exemplarily, the perfluoropolyether carboxylic acid in the present embodiment is Model P916413, provided by Shanghai Maikelin Biochemical Technology Co., Ltd.; the carbon nanotube is multi-walled carbon nanotube, Model XFM13, provided by Jiangsu Xianfeng Nanometer Material Technology Co., Ltd.; the barium sulfate is provided by Foshan Guicheng Technology Co., Ltd., with a particle size of 1250 mesh; the penetrating agent is isopropyl alcohol; the mica iron oxide is provided by Changzhou Chenghua New Material Technology Co., Ltd., with a particle size of 400 mesh; the dispersing agent is BYK 190; the defoaming agent is BYK 012; the leveling agent is Tego 410; and the film-forming aid is dipropylene glycol butyl ether.

[0028] The following parts are mass parts, unless otherwise specified.

[0029] Embodiment 1: A processing method of a water-based acrylic resin-based rotor rust-proof agent, comprising the following processes:

[0030] Step one: 4 parts of oleic acid, 1.6 parts of hydroxyethyl ethylenediamine and 2.8 parts of dimethylbenzene are uniformly mixed, reacted at 150℃ for 5h, and then heated to 210℃, and reacted for 3h to obtain 1-(2-hydroxyethyl)-2-oleic acid imidazoline;

[0031] 4 parts of 1-(2-hydroxyethyl)-2-oleic acid imidazoline, 6 parts of perfluoropolyether carboxylic acid and 12 parts of toluene are uniformly mixed, 0.03 parts of p-toluenesulfonic acid and 0.001 parts of hydroquinone are added, and reacted at 115℃ for 5h, and then distilled under reduced pressure to obtain the rust-proof agent A;

[0032] Step two: 3 parts of tannic acid, 0.15 parts of triphenylphosphine, 0.009 parts of hydroquinone, 6 parts of ethyl acetate were mixed uniformly, 6 parts of glycidyl methacrylate was added, and the mixture was reacted at 85℃ for 22h. After purification and drying, the tannic acid containing double bond was obtained;

[0033] 4 parts of tannic acid containing double bond were dispersed in 100 parts of deionized water, stirred for 10 min, and then 4 parts of phosphoric acid and 0.04 parts of penetrant were added and stirred uniformly to obtain a modified tannic acid solution; 3 parts of carbon nanotubes were dispersed in 90 parts of the modified tannic acid solution, and ultrasonic dispersion was performed for 2h. After centrifugation and drying, the antirust agent B was obtained;

[0034] Step three: 8 parts of styrene, 2 parts of acrylic acid, 4 parts of antirust agent A, 3 parts of antirust agent B, 10 parts of 2-hydroxyethyl methacrylate, 5 parts of methyl methacrylate and 4 parts of butyl acrylate were mixed uniformly, and 1 part of ammonium persulfate was added and mixed uniformly to obtain a mixture; 50 parts of deionized water and 0.2 parts of a composite emulsifier were mixed uniformly, and the temperature was raised to 75℃. 1 / 3 mass fraction of the mixture was added dropwise, and the dropping was completed in 30 min. The reaction was carried out for 0.5h. The remaining mixture was continuously added dropwise, and the dropping was completed in 2h. The reaction was carried out at 85℃ for 2h. The temperature was lowered to 45℃, and triethylamine was used for neutralization. Filtration was performed to obtain a modified acrylic resin. The composite emulsifier was obtained by mixing sodium dodecyl sulfate and OP-10 in a mass ratio of 1:1;

[0035] Step four: 50 parts of modified acrylic resin and 10 parts of deionized water were mixed uniformly, and 0.1 parts of dimethyl ethanolamine, 0.1 parts of dispersant, 0.1 parts of defoaming agent, 0.1 parts of leveling agent, 1 parts of film-forming aid, 4 parts of barium sulfate and 10 parts of mica iron oxide were mixed uniformly to obtain a water-based acrylic resin-based rotor antirust agent.

[0036] Example 2: A processing method of a water-based acrylic resin-based rotor antirust agent, comprising the following processes:

[0037] Step one: 5 parts of oleic acid, 2.25 parts of hydroxyethyl ethylenediamine and 4 parts of dimethylbenzene were mixed uniformly, and the reaction was carried out at 155℃ for 6h. The temperature was continuously raised to 215℃, and the reaction time was 4h to obtain 1-(2-hydroxyethyl)-2-oleic acid imidazoline;

[0038] 5 parts of 1-(2-hydroxyethyl)-2-oleic acid imidazoline, 10 parts of perfluoropolyether carboxylic acid and 20 parts of toluene were mixed uniformly, 0.6 parts of p-toluenesulfonic acid and 0.03 parts of hydroquinone were added, and the reaction was carried out at 118℃ for 6h. After vacuum distillation, the antirust agent A was obtained;

[0039] Step two: 4 parts of tannic acid, 0.24 parts of triphenylphosphine, 0.016 parts of hydroquinone, 12 parts of ethyl acetate were mixed uniformly, 10 parts of glycidyl methacrylate was added, and the mixture was reacted at 90℃ for 23h. After purification and drying, the tannic acid containing double bond was obtained;

[0040] 4 parts of tannic acid containing double bond were dispersed in 160 parts of deionized water, stirred for 15 min, and then 6 parts of a mixed solution of phosphoric acid and 0.08 parts of penetrant were added and stirred uniformly to obtain a modified tannic acid solution; 4 parts of carbon nanotubes were dispersed in 160 parts of the modified tannic acid solution, and ultrasonic dispersion was performed for 2.5h. After centrifugation and drying, the rust inhibitor B was obtained;

[0041] Step three: 10 parts of styrene, 3 parts of acrylic acid, 5 parts of rust inhibitor A, 4 parts of rust inhibitor B, 12 parts of 2-hydroxyethyl methacrylate, 7 parts of methyl methacrylate and 5 parts of butyl acrylate were mixed uniformly, and 2 parts of ammonium persulfate were added and mixed uniformly to obtain a mixture; 60 parts of deionized water and 0.4 parts of a composite emulsifier were mixed uniformly, and the temperature was raised to 78℃. 1 / 3 mass fraction of the mixture was added dropwise, and the dropping was completed in 35 min. The reaction was carried out for 0.8h. The remaining mixture was continuously added dropwise, and the dropping was completed in 2.5h. The reaction was carried out at 88℃ for 2.5h. The temperature was lowered to 50℃, and triethylamine was used for neutralization. Filtration was performed to obtain a modified acrylic resin. The composite emulsifier was obtained by mixing sodium dodecyl sulfate and OP-10 in a mass ratio of 1:1.5;

[0042] Step four: 55 parts of modified acrylic resin and 15 parts of deionized water were mixed uniformly, and 0.15 parts of dimethyl ethanolamine, 0.2 parts of dispersant, 0.15 parts of defoaming agent, 0.2 parts of leveling agent, 2 parts of film forming aid, 5 parts of barium sulfate and 12 parts of mica iron oxide were mixed uniformly to obtain a water-based acrylic resin-based rotor rust inhibitor.

[0043] Example 3: A processing method of a water-based acrylic resin-based rotor rust inhibitor, comprising the following processes:

[0044] Step one: 6 parts of oleic acid, 3 parts of hydroxyethyl ethylenediamine and 6 parts of dimethylbenzene were mixed uniformly, and the reaction was carried out at 160℃ for 7h. The temperature was continuously raised to 220℃, and the reaction time was 5h to obtain 1-(2-hydroxyethyl)-2-oleic acid imidazoline;

[0045] 6 parts of 1-(2-hydroxyethyl)-2-oleic acid imidazoline, 18 parts of perfluoropolyether carboxylic acid and 30 parts of toluene were mixed uniformly, 1.2 parts of p-toluenesulfonic acid and 0.072 parts of hydroquinone were added, and the reaction was carried out at 120℃ for 7h. After vacuum distillation, the rust inhibitor A was obtained;

[0046] Step two: 3 parts of tannic acid containing double bond, 0.21 parts of triphenylphosphine, 0.015 parts of hydroquinone, 12 parts of ethyl acetate were mixed uniformly, 9 parts of glycidyl methacrylate was added, and the mixture was reacted at 95℃ for 24h. After purification and drying, tannic acid containing double bond was obtained;

[0047] 3 parts of tannic acid containing double bond were dispersed in 150 parts of deionized water, stirred for 20 min, and then 6 parts of a mixed solution of phosphoric acid and 0.18 parts of penetrant were added and stirred uniformly to obtain a modified tannic acid solution; 5 parts of carbon nanotubes were dispersed in 150 parts of the modified tannic acid solution, ultrasonic dispersion was performed for 3h, and then centrifugation and drying were performed to obtain a rust inhibitor B;

[0048] Step three: 12 parts of styrene, 4 parts of acrylic acid, 6 parts of rust inhibitor A, 5 parts of rust inhibitor B, 15 parts of 2-hydroxyethyl methacrylate, 8 parts of methyl methacrylate and 6 parts of butyl acrylate were mixed uniformly, 3 parts of ammonium persulfate was added and mixed uniformly to obtain a mixture; 70 parts of deionized water and 0.6 parts of a composite emulsifier were mixed uniformly, heated to 80℃, and 1 / 3 mass fraction of the mixture was added dropwise, and the dropping was completed in 40 min. The reaction was carried out for 1.0h; the remaining mixture was continuously added dropwise, the dropping was completed in 3h, and the reaction was carried out at 90℃ for 3h. The temperature was lowered to 55℃, and triethylamine was used for neutralization. Filtration was performed to obtain a modified acrylic resin; the composite emulsifier was obtained by mixing sodium dodecyl sulfate and OP-10 at a mass ratio of 1:2;

[0049] Step four: 60 parts of modified acrylic resin and 20 parts of deionized water were mixed uniformly, and then 0.2 parts of dimethyl ethanolamine, 0.3 parts of dispersant, 0.2 parts of defoaming agent, 0.3 parts of leveling agent, 3 parts of film-forming aid, 6 parts of barium sulfate and 15 parts of mica iron oxide were mixed uniformly to obtain a water-based acrylic resin-based rotor rust inhibitor.

[0050] Comparative example 1: a processing method of a water-based acrylic resin-based rotor rust inhibitor, comprising the following processes:

[0051] Step one: 4 parts of tannic acid, 0.24 parts of triphenylphosphine, 0.016 parts of hydroquinone, 12 parts of ethyl acetate were mixed uniformly, 10 parts of glycidyl methacrylate was added, and the mixture was reacted at 90℃ for 23h. After purification and drying, tannic acid containing double bond was obtained;

[0052] 4 parts of tannic acid containing double bond were dispersed in 160 parts of deionized water, stirred for 15 min, and then 6 parts of a mixed solution of phosphoric acid and 0.08 parts of penetrant was added and stirred uniformly to obtain a modified tannic acid solution; 4 parts of carbon nanotubes were dispersed in 160 parts of the modified tannic acid solution, ultrasonic dispersion was performed for 2.5h, and then centrifugation and drying were performed to obtain a rust inhibitor B;

[0053] Step two: 10 parts of styrene, 3 parts of acrylic acid, 4 parts of rust inhibitor B, 12 parts of 2-hydroxyethyl methacrylate, 7 parts of methyl methacrylate and 5 parts of butyl acrylate are uniformly mixed, 2 parts of ammonium persulfate is added and uniformly mixed to obtain a mixture; 60 parts of deionized water and 0.4 parts of a composite emulsifier are uniformly mixed, heated to 78°C, and 1 / 3 mass fraction of the mixture is added dropwise, and the reaction is carried out for 0.8h; continue to add the remaining mixture, 2.5h dropwise, and react for 2.5h at 88°C; cool to 50°C, neutralize with triethylamine, filter to obtain a modified acrylic resin; the composite emulsifier is uniformly mixed by sodium dodecyl sulfate and OP-10 in a mass ratio of 1:1.5;

[0054] Step four: 55 parts of modified acrylic resin and 15 parts of deionized water are uniformly mixed, 0.15 parts of dimethyl ethanolamine, 0.2 parts of dispersant, 0.15 parts of defoaming agent, 0.2 parts of leveling agent, 2 parts of film forming aid, 5 parts of barium sulfate, 12 parts of mica and iron oxide are uniformly mixed to obtain a water-based acrylic resin-based rotor rust inhibitor;

[0055] Comparative Example 1 is based on Example 2, and in Comparative Example 1, no rust inhibitor A is introduced, and the remaining process steps and reaction parameters are consistent with Example 2.

[0056] Comparative Example 2: A processing method of a water-based acrylic resin-based rotor rust inhibitor, comprising the following processes:

[0057] Step one: 5 parts of oleic acid, 2.25 parts of hydroxyethyl ethylenediamine and 4 parts of dimethylbenzene are uniformly mixed, reacted at 155°C for 6h, and then heated to 215°C, and reacted for 4h to obtain 1-(2-hydroxyethyl)-2-oleic acid imidazoline;

[0058] Step two: 4 parts of tannic acid, 0.24 parts of triphenylphosphine, 0.016 parts of hydroquinone, 12 parts of ethyl acetate are uniformly mixed, 10 parts of glycidyl methacrylate is added, and reacted at 90°C for 23h, and after purification and drying, a double bond-containing tannic acid is obtained;

[0059] 4 parts of double bond-containing tannic acid are dispersed in 160 parts of deionized water, stirred for 15min, and a mixed solution of 6 parts of phosphoric acid and 0.08 parts of penetrant is added and stirred uniformly to obtain a modified tannic acid solution; 4 parts of carbon nanotubes are dispersed in 160 parts of modified tannic acid solution, ultrasonic dispersion is carried out for 2.5h, and after centrifugation and drying, a rust inhibitor B is obtained;

[0060] Step three: 10 parts of styrene, 3 parts of acrylic acid, 5 parts of 1-(2-hydroxyethyl)-2-oleic acid imidazoline, 4 parts of rust inhibitor B, 12 parts of 2-hydroxyethyl methacrylate, 7 parts of methyl methacrylate and 5 parts of butyl acrylate are uniformly mixed, 2 parts of ammonium persulfate is added and uniformly mixed to obtain a mixture; 60 parts of deionized water and 0.4 parts of composite emulsifier are uniformly mixed, heated to 78°C, and 1 / 3 mass fraction of the mixture is added dropwise, and the dropwise addition is completed in 35 min, and the reaction is carried out for 0.8 h; continue to add the remaining mixture, dropwise addition is completed in 2.5 h, and the reaction is carried out at 88°C for 2.5 h, and the temperature is reduced to 50°C, neutralized with triethylamine, filtered, and the modified acrylic resin is obtained; the composite emulsifier is uniformly mixed by sodium dodecyl sulfate and OP-10 in a mass ratio of 1:1.5;

[0061] Step four: 55 parts of modified acrylic resin and 15 parts of deionized water are uniformly mixed, 0.15 parts of dimethyl ethanolamine, 0.2 parts of dispersant, 0.15 parts of defoaming agent, 0.2 parts of leveling agent, 2 parts of film forming aid, 5 parts of barium sulfate, 12 parts of mica and iron oxide are uniformly mixed to obtain a water-based acrylic resin-based rotor rust inhibitor;

[0062] Comparative Example 2 is based on Example 2, and in Comparative Example 2, the perfluoropolyether carboxylic acid is not introduced, and the rust inhibitor A is replaced by 1-(2-hydroxyethyl)-2-oleic acid imidazoline, and the remaining process steps and reaction parameters are consistent with Example 2.

[0063] Comparative Example 3: A processing method of a water-based acrylic resin-based rotor rust inhibitor, comprising the following processes:

[0064] Step one: 5 parts of oleic acid, 2.25 parts of hydroxyethyl ethylenediamine and 4 parts of xylene are uniformly mixed, and the reaction is carried out at 155°C for 6h, and then the temperature is increased to 215°C, and the reaction time is 4h to obtain 1-(2-hydroxyethyl)-2-oleic acid imidazoline;

[0065] 5 parts of 1-(2-hydroxyethyl)-2-oleic acid imidazoline and 10 parts of perfluoropolyether carboxylic acid and 20 parts of toluene are uniformly mixed, 0.6 parts of p-toluenesulfonic acid and 0.03 parts of hydroquinone are added, and the reaction is carried out at 118°C for 6h, and after vacuum distillation, rust inhibitor A is obtained;

[0066] Step two: 4 parts of tannic acid, 0.24 parts of triphenylphosphine, 0.016 parts of hydroquinone, 12 parts of ethyl acetate are uniformly mixed, 10 parts of glycidyl methacrylate is added, and the reaction is carried out at 90°C for 23h, and after purification and drying, a double bond-containing tannic acid is obtained;

[0067] Step three: 10 parts of styrene, 3 parts of acrylic acid, 5 parts of anti-rust agent A, 4 parts of double bond containing tannic acid, 12 parts of 2-hydroxyethyl methacrylate, 7 parts of methyl methacrylate and 5 parts of butyl acrylate were uniformly mixed, 2 parts of ammonium persulfate was added and uniformly mixed to obtain a mixture; 60 parts of deionized water and 0.4 parts of composite emulsifier were uniformly mixed, heated to 78°C, and 1 / 3 mass fraction of the mixture was added dropwise, and the dropping was completed in 35 min, and the reaction was carried out for 0.8 h; continue to add the remaining mixture, drop for 2.5 h, react at 88°C for 2.5 h, cool to 50°C, neutralize with triethylamine, filter to obtain a modified acrylic resin; the composite emulsifier is uniformly mixed by sodium dodecyl sulfate and OP-10 in a mass ratio of 1:1.5;

[0068] Step four: 55 parts of modified acrylic resin and 15 parts of deionized water were uniformly mixed, 0.15 parts of dimethyl ethanolamine, 0.2 parts of dispersant, 0.15 parts of defoaming agent, 0.2 parts of leveling agent, 2 parts of film forming aid, 5 parts of barium sulfate and 12 parts of mica iron oxide were uniformly mixed to obtain a water-based acrylic resin-based rotor anti-rust agent.

[0069] Comparative Example 3 is based on Example 2, and in Comparative Example 3, the anti-rust agent B is replaced with the same mass of double bond containing tannic acid, and the remaining process steps and reaction parameters are consistent with Example 2.

[0070] Experiment: Take the water-based acrylic resin-based rotor anti-rust agent obtained in Examples 1-3 and Comparative Examples 1-3, and coat it on a polished tin plate with a coating thickness of 25μm, place it in an 80°C oven for 30 min, and then in a 150°C oven for 30 min to prepare a sample. The performance of the sample was detected and the detection results were recorded:

[0071] The adhesion test was carried out according to GB / T 9286-2021 "Color paints and varnishes Cross-cut test", the adhesion was measured by using a cross-cut knife, the cutting area was visually inspected, and the rating was performed, 0 level: the cutting edge is completely smooth, and there is no peeling in the grid; 1 level: there is a little peeling at the intersection of the cut, but the affected cross-cut area is not more than 5%; 2 level: there is peeling at the intersection of the cut and / or along the edge of the cut, and the affected cross-cut area is more than 5% but not more than 15%; the salt spray resistance test was carried out according to GB / T 10125-2021 "Artificial atmosphere corrosion test Salt spray test", the temperature in the salt spray chamber was 35°C, and the test solution was a 5% NaCl solution by mass fraction; the rust resistance test: the sample was placed at a temperature of 50°C and a humidity of 65% for 50h, and the rusted area on the surface of the sample was measured; the water contact angle test: 2μL of deionized water was used for testing; the above tests were repeated three times to take the average value.

[0072] The test results are shown in Table 1.

[0073] Table 1. Results of water-based acrylic resin-based rotor antirust agent related performance tests

[0074]

[0075] In combination with Examples 1-3 and Comparative Examples 1-3, it can be seen that the water-based acrylic resin-based rotor antirust agent prepared according to the present application has excellent rust prevention and adhesion, and at the same time has excellent corrosion resistance and hydrophobicity. By combining antirust agent A and antirust agent B in the water-based acrylic resin, a synergistic effect is achieved, not only improving the overall performance of the antirust agent, but also better coping with corrosion challenges in different environments, providing more comprehensive protection.

[0076] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A method of processing an aqueous acrylic resin-based rotor antirust agent, characterized by: It comprises the following steps: Step one: 1-(2-hydroxyethyl)-2-oleic acid imidazoline and perfluoro polyether carboxylic acid and toluene are mixed uniformly, p-toluenesulfonic acid and hydroquinone are added, and the mixture is reacted at 115-120℃ for 5-7h, and then distilled under reduced pressure to obtain the rust inhibitor A; Step two: the double bond containing tannic acid is dispersed in deionized water, stirred for 10-20min, and then a mixed solution of phosphoric acid and penetrant is added and stirred uniformly to obtain a modified tannic acid solution; The carbon nanotubes are dispersed in the modified tannic acid solution, ultrasonically dispersed for 2-3h, centrifuged and dried to obtain the rust inhibitor B; Step three: styrene, acrylic acid, rust inhibitor A, rust inhibitor B, methyl methacrylate-2-hydroxyethyl ester, methyl methacrylate and butyl acrylate are mixed uniformly, ammonium persulfate is added and mixed uniformly to obtain a mixture; deionized water and a composite emulsifier are mixed uniformly, heated to 75-80℃, and 1 / 3 of the mass fraction of the mixture is added dropwise, and the dropping is completed in 30-40min, and the reaction is carried out for 0.5-1.0h; the remaining mixture is continuously added dropwise, and the dropping is completed in 2-3h, and the reaction is carried out at 85-90℃ for 2-3h, and then the temperature is lowered to 45-55℃, and triethylamine is used for neutralization, and then filtered to obtain a modified acrylic resin; Step four: the modified acrylic resin and deionized water are mixed uniformly, and then dimethyl ethanolamine, dispersant, defoaming agent, leveling agent, film forming aid, barium sulfate and mica iron oxide are added and mixed uniformly to obtain a water-based acrylic resin-based rotor rust inhibitor.

2. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 1, characterized in that: In step one, the mass ratio of 1-(2-hydroxyethyl)-2-oleic acid imidazoline, perfluoro polyether carboxylic acid and toluene is 1:(1.5-3.0):(3-5).

3. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 2, characterized in that: The preparation steps of the 1-(2-hydroxyethyl)-2-oleic acid imidazoline are as follows: oleic acid, hydroxyethyl ethylenediamine and dimethylbenzene are mixed uniformly, and the mixture is reacted at 150-160℃ for 5-7h, and then the temperature is increased to 210-220℃, and the reaction is carried out for 3-5h to obtain the 1-(2-hydroxyethyl)-2-oleic acid imidazoline.

4. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 1, characterized in that: In step two, the mass ratio of the double bond containing tannic acid, deionized water, phosphoric acid and penetrant is 1:(25-50):(1-2):(0.01-0.03).

5. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 4, characterized in that: The preparation steps of the double bond containing tannic acid are as follows: tannic acid, triphenylphosphine, hydroquinone and ethyl acetate are mixed uniformly, and then glycidyl methacrylate is added, and the mixture is reacted at 85-95℃ for 22-24h, and then purified and dried to obtain the double bond containing tannic acid.

6. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 1, characterized in that: In step two, the mass ratio of the carbon nanotubes and the modified tannic acid solution is 1:(30-50).

7. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 1, characterized in that: In step three, the amounts of the components are as follows: styrene 8-12 parts, acrylic acid 2-4 parts, rust inhibitor A 4-6 parts, rust inhibitor B 3-5 parts, methyl methacrylate-2-hydroxyethyl ester 10-15 parts, methyl methacrylate 5-8 parts, butyl acrylate 4-6 parts, ammonium persulfate 1-3 parts, deionized water 50-70 parts, and composite emulsifier 0.2-0.6 parts.

8. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 7, characterized in that: The composite emulsifier is obtained by mixing sodium dodecyl sulfate and OP-10 uniformly at a mass ratio of 1:(1-2).

9. The processing method of the water-based acrylic resin-based rotor rust inhibitor according to claim 1, characterized in that: The water-based acrylic resin-based rotor antirust agent comprises the following raw materials: 50-60 parts of modified acrylic resin, 10-20 parts of deionized water, 0.1-0.2 parts of dimethyl ethanolamine, 4-6 parts of barium sulfate, 10-15 parts of mica iron oxide, 0.1-0.3 parts of dispersant, 0.1-0.2 parts of defoaming agent, 0.1-0.3 parts of leveling agent, and 1-3 parts of film-forming aid.

10. A water-based acrylic resin-based rotor antirust agent prepared by the processing method according to any one of claims 1-9.

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