CN111995945A - Quick-drying type water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion and preparation method thereof - Google Patents
Quick-drying type water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion which comprises the following raw materials in parts by mass: 20-90 parts of water-based acrylic modified epoxy ester, 10-80 parts of polyurethane prepolymer, 0-5 parts of polyurethane chain extender, 0-5 parts of neutralized amine and 0-50 parts of water. The waterborne acrylic modified epoxy ester can partially serve as an emulsifier when the phase of the polyurethane prepolymer is inverted, and the acid value of the system can be reduced under the condition of ensuring the stability of the emulsion, so that the water resistance of the final emulsion product is improved, and the corrosion resistance is further ensured; after the polyurethane is subjected to water-based treatment, polyamine or water chain extension is carried out, so that the molecular weight is large, the drying speed of an emulsion product is obviously improved, and the application requirement of quick drying at room temperature is met. The invention also discloses a preparation method of the quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion, which is simple to operate, easy to control the reaction process and low in preparation cost.
Description
Technical Field
The invention belongs to the technical field of water-based paint, and particularly relates to a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion and a preparation method thereof.
Background
The traditional solvent-based paint needs to use a large amount of organic solvent, which not only causes large consumption of the organic solvent, but also causes serious pollution to the environment, and all countries in the world aim to the water-based paint without pollution or with low pollution in order to save resources and protect the environment.
The water-based epoxy ester antirust coating has wide application in the field of metal corrosion prevention due to excellent antirust performance, particularly becomes a preferable scheme for replacing solvent-based alkyd resin in the broad axle market, has certain self-drying property, and has higher hydrolysis resistance and more excellent antirust performance than the alkyd resin.
The water-based epoxy ester resin is mainly applied to workpieces of outdoor construction such as axles and the like as an anticorrosive coating, the coating process is not baked, compared with a solvent-based coating, the water-based coating has higher latent heat of volatilization of water and slower volatilization speed, and the application range is limited because the drying speed cannot meet the requirements of customers in many occasions during outdoor construction.
The drying properties of the aqueous epoxy ester are affected by various factors such as the molecular weight of the resin, the glass transition temperature, the type of oil, the degree of oil, and the type of solvent. These factors are the same as solvent-based alkyd resins and epoxy ester resins, and the resins have higher molecular weights, higher glass transition temperatures and lower solvent boiling points, and are faster to dry. In addition to these factors, in an aqueous system, since water is used as a diluent solvent, and the specific heat ratio of water is high, the volatilization speed of water is slow compared with that of a general hydrophilic solvent, and particularly when the weather is low in temperature and high in humidity, the volatilization speed of water is slow.
The actual drying of the water-based epoxy ester is a film formed by the reaction and crosslinking of double bonds in unsaturated oil with a molecular structure and oxygen in air, the oxygen plays an important role in the curing of resin, and in the water-based paint, because a dispersion medium is mainly water, and the solubility of the oxygen in water is obviously lower than that of the oxygen in a solvent, namely the oxygen concentration of the surrounding environment of the resin is lower, which is a factor that the water-based paint is dried more slowly than solvent-based paint. If a drier is added in the air drying process, the reaction speed of the double bond on the unsaturated oil and oxygen can be faster. The currently used driers are generally isooctanoate or naphthenate of metals such as cobalt, zirconium, calcium and the like, and these salts can exist stably in a solvent system, while in an aqueous system, the driers can form metal ions in water, and are easily attacked by other acids to be inactivated, so that the aqueous alkyd is slow to dry in the aqueous system. In summary, the drying speed of water-borne alkyds or water-borne epoxy esters is significantly less than that of solvent-borne, especially solid-dry, systems due to a number of adverse factors.
The existing synthesis methods of the water-based epoxy ester mainly comprise two methods: 1) an unsaturated fatty acid ring-opening epoxy resin is added dropwise to the epoxy resin, and then radical polymerization is performed, and a water dispersion having a core-shell structure is formed by water-solubilizing a carboxyl group of the acrylic resin, for example, japanese patent No. (patent No.: 05306377); 2) epoxy ester obtained by ring-opening of fatty acid and acrylic resin with high acid value are synthesized separately, then the epoxy ester is subjected to ring-opening with the acrylic resin with high acid value, and then neutralized to be water-based, as in chinese patent (patent No.: 200610037496.5). The resins obtained by the two methods have similar structures, and when the resins are used as matrix resins to prepare anticorrosive coatings, the drying speed is difficult to meet the application requirements of many occasions.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects and shortcomings in the background technology and provides a quick-drying type water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion and a preparation method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion comprises the following components in parts by mass: 20-90 parts of water-based acrylic modified epoxy ester, 10-80 parts of polyurethane prepolymer, 0-5 parts of polyurethane chain extender, 0-5 parts of neutralized amine and 0-50 parts of water.
The quick-drying type waterborne acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion preferably comprises the following raw materials in parts by mass: 50-90 parts of water-based acrylic modified epoxy ester, 10-50 parts of polyurethane prepolymer, 1-4 parts of polyurethane chain extender, 0.2-1 part of neutralized amine and 10-30 parts of water.
The invention further hybridizes with polyurethane prepolymer on the basis of the traditional waterborne epoxy ester. After hydrophilic chain segments such as dimethylolpropionic acid are introduced into the polyurethane prepolymer, the polyurethane prepolymer can be self-emulsified to form a water dispersion solution, and residual NCO in the prepolymer can react with water or polyamine to generate urea, so that the molecular weight of resin is increased rapidly, and the water-based polyurethane dispersion with good quick-drying performance is obtained. The polyurethane prepolymer is introduced into the waterborne acrylic modified epoxy ester, so that the hybrid modified epoxy ester emulsion has the advantages of both the waterborne polyurethane dispersion and the waterborne acrylic modified epoxy ester dispersion, has high gloss, good fullness and quick drying, and can keep the corrosion resistance of the waterborne polyurethane hybrid modified epoxy acrylate emulsion while obviously improving the drying performance of the emulsion product.
In addition, the waterborne acrylic acid modified epoxy ester dispersoid can partially serve as an emulsifier when the polyurethane prepolymer is subjected to phase inversion, and the acid value of the polyurethane prepolymer of the system can be reduced under the condition of ensuring the stability of the emulsion, so that the water resistance of the final emulsion product is improved, and the salt spray resistance is further improved; after the polyurethane prepolymer is subjected to water-based treatment, polyamine or water chain extension is carried out, the molecular weight is increased rapidly (the existence of the polyamine can also enable the polyurethane to react with the unreacted epoxy functional group in the epoxy ester), the drying speed of the emulsion product is obviously improved, and the application requirement of quick drying at room temperature is met.
Preferably, the quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is prepared by reacting dihydric alcohol and diisocyanate; the dihydric alcohol in the polyurethane prepolymer is at least one of polycaprolactone diol, polytetrahydrofuran diol, polycarbonate diol, polyether diol and polyester diol; the diisocyanate in the polyurethane prepolymer is at least one of toluene diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, diphenylmethane diisocyanate and hexyl diisocyanate.
More preferably, the molar ratio of NCO/OH in the polyurethane prepolymer is 1.1-1.8.
Preferably, the polyurethane chain extender is at least one of polyamine such as diethylamine, diethylenediamine, triethylenetetramine and the like and water.
Preferably, the raw materials of the waterborne acrylic modified epoxy ester comprise the following components in parts by mass: 15-40 parts of epoxy resin, 11-40 parts of fatty acid, 2-8 parts of acrylic monomer, 4.5-35 parts of acrylate monomer, 0-0.1 part of catalyst, 0.6-2 parts of initiator, 20-40 parts of solvent, 5-15 parts of neutralizer and 100 parts of water. The acrylic monomer comprises a methacrylic monomer and/or other acrylic monomers, and the acrylate monomer comprises a methacrylate monomer and/or other acrylate monomers.
Preferably, the epoxy resin is bisphenol a epoxy resin; the catalyst is monobutyl tin oxide; the initiator is at least one of peroxybenzoic acid, tert-butyl peroxybenzoate, di-tert-butyl peroxide, di-tert-amyl peroxide, tert-butyl peroxy-2-ethylhexanoate and tert-amyl peroxy-2-ethylhexanoate; the solvent is at least one of diethylene glycol butyl ether, dipropylene glycol butyl ether, n-butyl alcohol, ethylene glycol monobutyl ether, propylene glycol butyl ether, propylene glycol methyl ether, ethanol, isopropanol and sec-butyl alcohol; the neutralizing agent is at least one of triethylamine, N-dimethylethanolamine and methylmorpholine.
According to the invention, through screening of the dihydric alcohol unit and the acrylic acid monomer in the polyurethane prepolymer, the compatibility of the aqueous acrylic acid modified epoxy ester dispersoid and the polyurethane prepolymer is improved, and the stability of an emulsion product and the gloss of a paint film are further improved. Specifically, the compatibility of the polyurethane prepolymer and the acrylic acid modified epoxy ester is adjusted by selecting different dihydric alcohol units, and the gloss of the resin and a paint film can be conveniently adjusted by adopting a microphase separation mode.
Based on a general inventive concept, the invention also provides a preparation method of the quick-drying type water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion, which comprises the following steps:
(1) preparing water-based acrylic acid modified epoxy ester;
(2) preparing a polyurethane prepolymer;
(3) and (2) adding water and neutralizing amine into the waterborne acrylic acid modified epoxy ester obtained in the step (1), uniformly stirring, adding the polyurethane prepolymer obtained in the step (2), continuously stirring, and filtering to obtain the quick-drying waterborne acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion.
In the above preparation method, preferably, in the step (1), the preparation method of the aqueous acrylic acid-modified epoxy ester includes the following steps:
s1, heating the fatty acid to 150 ℃ under 130-;
s2, heating the solvent to 150 ℃ below zero at 100-;
s3, mixing the oleic acid modified epoxy ester and the acrylic resin, heating to 140 ℃ under stirring, keeping the temperature constant for reaction until the acid value is reduced to 20-30mgKOH/g, cooling to 80-100 ℃, adding a neutralizing agent, stirring for 5-10min, and adding deionized water for hydration to obtain the waterborne acrylic acid modified epoxy ester.
Preferably, in the step (2), the preparation method of the polyurethane prepolymer comprises the following steps: mixing dimethylolpropionic acid, trimethylolpropane, dihydric alcohol and diisocyanate to ensure that the molar ratio of NCO/OH is 1.1-1.8, adding butanone and a catalyst after reacting for 1-2h, continuing to react until the NCO value in the polyurethane prepolymer reaches a theoretical value, and cooling to obtain the polyurethane prepolymer. Dimethylolpropionic acid and trimethylolpropane are used as reaction units, the trimethylolpropane can improve the molecular weight, and the dimethylolpropionic acid provides hydrophilicity for the polyurethane prepolymer; butanone acts as a diluent to reduce viscosity.
The preparation method provided by the invention is simple to operate, the reaction process is easy to control, the preparation period is short, and the preparation cost is low.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the quick-drying type water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion, the water-based acrylic acid modified epoxy ester resin and the polyurethane resin are subjected to hybrid modification, the product integrates the advantages of epoxy ester and polyurethane dispersoid, and has good quick-drying property, water resistance and salt mist resistance, so that the applicability of the obtained coating product is obviously improved.
2. According to the quick-drying type water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion, the polyurethane diol unit and the acrylic acid monomer are screened, the compatibility of the water-based acrylic acid modified epoxy ester dispersoid and the polyurethane prepolymer is good, the stability of the obtained hybrid emulsion is good, and the stability of the emulsion and the gloss of a paint film can be ensured; the compatibility of the polyurethane prepolymer and the acrylic acid modified epoxy ester is adjusted by selecting different dihydric alcohol units, and the gloss of the resin and the paint film can be conveniently adjusted by adopting a microphase separation mode.
3. According to the quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion, the water-based acrylic acid modified epoxy ester can partially serve as an emulsifier when the phase inversion of the polyurethane prepolymer is carried out, and the acid value of the system can be reduced under the condition of ensuring the stability of the emulsion, so that the water resistance of a final emulsion product is increased, and the anticorrosive performance is further ensured; after the polyurethane is subjected to water-based treatment, polyamine or water chain extension is carried out, so that the molecular weight is large, the drying speed of an emulsion product is obviously improved, and the application requirement of quick drying at room temperature is met.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1:
the invention relates to a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion, which comprises the following steps:
(1) preparation of unsaturated oleic acid modified epoxy ester: adding 45g of linoleic acid (fatty acid) into a four-neck flask, heating to about 140 ℃, adding 90g of epoxy E20 (bisphenol A epoxy resin) and 20g of xylene, heating to 230 ℃ under stirring, carrying out heat preservation reflux reaction until the acid value is below 10mgKOH/g, and cooling to obtain oleic acid modified epoxy ester;
(2) preparation of high acid number acrylic resin: adding 50g of dipropylene glycol butyl ether (solvent) into a four-neck flask, heating to 130 ℃, keeping the temperature for 30min, dropwise adding a mixture of 30g of methyl methacrylate, 20g of butyl acrylate, 20g of styrene, 20g of acrylic acid, 10g of hydroxyethyl methacrylate and 3g of tert-butyl peroxybenzoate (initiator) at a constant speed, completing dropwise adding for 2-3h, continuing to keep the temperature for 2-3h after completing dropwise adding, and then cooling and discharging to obtain acrylic resin with a high acid value (the acid value is 100-150mgKOH/g) and the solid content is 55%;
(3) adding 135g of oleic acid modified epoxy ester and 80g of high-acid-value acrylic resin into a four-neck flask, heating to 140 ℃ under stirring, keeping the temperature for reaction until the acid value is reduced to about 25mgKOH/g, cooling to about 90 ℃, adding 8.5g N N-dimethylethanolamine (neutralizer), stirring for 5min, and slowly adding 220g of deionized water for water-based treatment to obtain a water-based acrylic modified epoxy ester dispersion with the solid content of about 40%;
(4) preparing a polyurethane prepolymer: adding 3g of dimethylolpropionic acid, 10g of trimethylolpropane, 50072g of polycaprolactone diol and 90g of isophorone diisocyanate into a reaction bottle, reacting for 2 hours, adding 50g of butanone, adding a catalyst dibutyltin laurate, continuously reacting until the NCO value reaches a theoretical value (the molar ratio of NCO/OH in the polyurethane prepolymer is 1.1-1.8), and cooling to obtain a polyurethane prepolymer with the solid content of about 75%;
(5) and (2) taking 200g of the aqueous acrylic acid modified epoxy ester dispersoid obtained in the steps (1) - (3), adding 30g of deionized water (which can be used as a polyurethane chain extender) and 0.4g of neutralizing agent dimethylethanolamine (neutralized amine), stirring uniformly, adding 50g of the polyurethane prepolymer obtained in the step (4) under rapid stirring, stirring uniformly, continuing stirring at a low speed for 4 hours, filtering and discharging to obtain the quick-drying aqueous acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion, wherein the appearance of the quick-drying aqueous acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is semitransparent with blue light, and the solid content of the quick-drying aqueous acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is 41.
Example 2:
the invention relates to a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion, which comprises the following steps:
(1) preparing a polyurethane prepolymer: adding 3g of dimethylolpropionic acid, 10g of trimethylolpropane, 65093.6g of polytetrahydrofuran diol and 90g of isophorone diisocyanate into a reaction bottle, heating to 80 ℃, adding a catalyst dibutyltin laurate after the temperature is stable, adding 50g of butanone after reacting for 2 hours, continuing to react until the NCO value reaches the theoretical value (the molar ratio of NCO/OH in the polyurethane prepolymer is 1.1-1.8), cooling and cooling to obtain the polyurethane prepolymer with the solid content of about 75%;
(2) taking 200g of the aqueous acrylic acid modified epoxy ester dispersoid (solid content is about 40%) obtained in the step (3) in the example 1, adding 30g of deionized water (which can be used as a polyurethane chain extender) and 0.4g of neutralizer dimethylethanolamine (neutralized amine), stirring uniformly, adding 50g of the polyurethane prepolymer obtained in the step (1) under rapid stirring, stirring uniformly, continuing stirring at a low speed for 4h, filtering and discharging to obtain the quick-drying aqueous acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion, wherein the appearance of the emulsion is semitransparent with blue light, and the solid content is 43%.
Example 3:
the invention relates to a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion, which comprises the following steps:
200g of the aqueous acrylic acid modified epoxy ester dispersoid (solid content is about 40%) obtained in the step (3) in the example 1 and 0.4g of neutralizing agent dimethylethanolamine (neutralized amine) are taken and stirred uniformly, 50g of the polyurethane prepolymer in the example 1 is added under rapid stirring, 20g of aqueous solution dissolved with 1g of ethylenediamine is slowly dropped after uniform stirring, stirring is continued for 4 hours under low speed after the addition is finished, and then the mixture is filtered and discharged, so that the quick-drying aqueous acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is obtained, the appearance of the emulsion is milky and slightly blue, and the solid content is 42.2%.
Example 4:
the invention relates to a quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion, which comprises the following steps:
200g of the aqueous acrylic acid modified epoxy ester dispersoid (solid content is about 40%) obtained in the step (3) in the embodiment 1 and 0.4g of neutralizing agent dimethylethanolamine (neutralized amine) are taken and stirred uniformly, 50g of the polyurethane prepolymer in the embodiment 2 is added under rapid stirring, 20g of aqueous solution dissolved with 1g of ethylenediamine is slowly dropped after uniform stirring, stirring is continued for 4 hours under low speed after completion of addition, and then the mixture is filtered and discharged, so that the quick-drying aqueous acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is obtained, the appearance of the emulsion is milky and slightly blue, and the solid content is 43.5%.
To further demonstrate the effect of the present invention, we performed the following experiments:
setting 6 experimental groups, adding dimethylethanolamine into deionized water of each experimental group, adding bentonite, zinc phosphate, iron titanium powder and carbon black under stirring to form dispersion, and grinding; after grinding to the fineness of less than or equal to 15um, the quick-drying type waterborne acrylic acid-polyurethane-epoxy ester ternary antiseptic emulsion obtained in the example 1-4 (the added amount is calculated according to 40% of solid part equivalent), the waterborne acrylic acid modified epoxy ester dispersoid (shown as 'C' in the table 1) obtained in the example 1 and the waterborne self-drying epoxy ester resin 3AE31Y sold in the market are respectively added into the experimental groups 1-6, after being uniformly stirred, the drier, the defoamer and the wetting agent are added into each experimental group, and the construction viscosity is adjusted by using a proper amount of deionized water. The obtained 6 experimental group mixtures were sprayed on the cold-rolled steel sheets, and the cold-rolled steel sheets were degreased during spraying. The dosage ratio (parts by weight) of each component in the mixture is as follows:
table 1: comparison of Performance of 6 Experimental groups
It can be seen from the comparison of the experimental data in table 1 above that, after the waterborne epoxy acrylate is modified by polyurethane, the drying property of the obtained quick-drying waterborne acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is greatly improved, mainly because the waterborne epoxy ester is hybridized by polyurethane, a polyurethane macromolecular part is introduced, so that the average molecular weight of the waterborne epoxy ester is greatly improved (the macromolecular part cannot be measured). Compared with the water resistance for 10 days, the emulsion can meet the use requirements before and after emulsion polymerization. In the aspect of salt spray, although the introduction of polyurethane reduces the proportion of epoxy resin in resin, the crosslinking strength and water resistance of the resin are improved, the salt spray performance is improved, and the weight proportion of the epoxy resin in the quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anti-corrosion emulsion obtained by the invention is still between 30 and 40 percent and is far higher than that of the epoxy acrylic emulsion in the current market.
The quick-drying type waterborne acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion integrates the advantages of waterborne acrylic acid epoxy ester dispersoid and polyurethane dispersoid, and has the advantages of high gloss, good fullness and quick drying; the corrosion resistance of the waterborne epoxy acrylate dispersoid is preserved, and meanwhile, the dryness of the resin is improved by a polyurethane chain extension method, so that the requirement of most construction sites on the self-drying property of the waterborne epoxy ester is met, and the application field of the waterborne epoxy ester is expanded.
Claims (10)
1. The quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion is characterized by comprising the following components in parts by mass: 20-90 parts of water-based acrylic modified epoxy ester, 10-80 parts of polyurethane prepolymer, 0-5 parts of polyurethane chain extender, 0-5 parts of neutralized amine and 0-50 parts of water.
2. The quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion according to claim 1, characterized in that the raw materials comprise the following components in parts by mass: 50-90 parts of water-based acrylic modified epoxy ester, 10-50 parts of polyurethane prepolymer, 1-4 parts of polyurethane chain extender, 0.2-1 part of neutralized amine and 10-30 parts of water.
3. The quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion according to claim 1 or 2, characterized in that the polyurethane prepolymer is obtained by reacting dihydric alcohol and diisocyanate; the dihydric alcohol in the polyurethane prepolymer is at least one of polycaprolactone diol, polytetrahydrofuran diol, polycarbonate diol, polyether diol and polyester diol; the diisocyanate in the polyurethane prepolymer is at least one of toluene diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, diphenylmethane diisocyanate and hexyl diisocyanate.
4. The quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion according to claim 1 or 2, characterized in that the molar ratio of NCO/OH in the polyurethane prepolymer is 1.1-1.8.
5. The quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary antiseptic emulsion according to claim 1 or 2, wherein the polyurethane chain extender is at least one of ethylenediamine, diethylenediamine, triethylenetetramine and water.
6. The quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary antiseptic emulsion according to claim 1 or 2, wherein the raw material of the water-based acrylic acid modified epoxy ester comprises the following components in parts by mass: 15-40 parts of epoxy resin, 11-40 parts of fatty acid, 2-8 parts of acrylic monomer, 4.5-35 parts of acrylate monomer, 0-0.1 part of catalyst, 0.6-2 parts of initiator, 20-40 parts of solvent, 5-15 parts of neutralizer and 100 parts of water.
7. The quick-drying aqueous acrylic-urethane-epoxy ester ternary anticorrosive emulsion according to claim 6, characterized in that the epoxy resin is a bisphenol A epoxy resin; the catalyst is monobutyl tin oxide; the initiator is at least one of peroxybenzoic acid, tert-butyl peroxybenzoate, di-tert-butyl peroxide, di-tert-amyl peroxide, tert-butyl peroxy-2-ethylhexanoate and tert-amyl peroxy-2-ethylhexanoate; the solvent is at least one of diethylene glycol butyl ether, dipropylene glycol butyl ether, n-butyl alcohol, ethylene glycol monobutyl ether, propylene glycol butyl ether, propylene glycol methyl ether, ethanol, isopropanol and sec-butyl alcohol; the neutralizing agent is at least one of triethylamine, N-dimethylethanolamine and methylmorpholine.
8. A method for preparing the quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary antiseptic emulsion according to any one of claims 1 to 7, which is characterized by comprising the following steps:
(1) preparing water-based acrylic acid modified epoxy ester;
(2) preparing a polyurethane prepolymer;
(3) and (2) adding water and neutralizing amine into the waterborne acrylic acid modified epoxy ester obtained in the step (1), uniformly stirring, adding the polyurethane prepolymer obtained in the step (2), continuously stirring, and filtering to obtain the quick-drying waterborne acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion.
9. The method according to claim 8, wherein in the step (1), the method for preparing the aqueous acrylic modified epoxy ester comprises the steps of:
s1, heating the fatty acid to 150 ℃ under 130-;
s2, heating the solvent to 150 ℃ below zero at 100-;
s3, mixing the oleic acid modified epoxy ester and the acrylic resin, heating to 140 ℃ under stirring, keeping the temperature constant for reaction until the acid value is reduced to 20-30mgKOH/g, cooling to 80-100 ℃, adding a neutralizing agent, stirring for 5-10min, and adding deionized water for hydration to obtain the quick-drying water-based acrylic acid-polyurethane-epoxy ester ternary anticorrosive emulsion.
10. The method according to claim 8 or 9, wherein in the step (2), the method for preparing the polyurethane prepolymer comprises the following steps: mixing dimethylolpropionic acid, trimethylolpropane, dihydric alcohol and diisocyanate to ensure that the molar ratio of NCO/OH is 1.1-1.8, adding butanone and a catalyst after reacting for 1-2h, continuing to react until the NCO value in the polyurethane prepolymer reaches a theoretical value, and cooling to obtain the polyurethane prepolymer.
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