CN115746212A - Water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance and preparation method thereof - Google Patents
Water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance and preparation method thereof Download PDFInfo
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- CN115746212A CN115746212A CN202211692827.4A CN202211692827A CN115746212A CN 115746212 A CN115746212 A CN 115746212A CN 202211692827 A CN202211692827 A CN 202211692827A CN 115746212 A CN115746212 A CN 115746212A
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Abstract
The invention relates to a water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following components in parts by weight: epoxy modified alkyd prepolymer: 500-600 parts; acrylic acid: 45-50 parts of a solvent; methyl ester: 45-60 parts; isooctyl acrylate: 20-30 parts of a solvent; styrene: 150-200 parts; accelerator (b): 25-35 parts; cosolvent: 180-220 parts; neutralizing agent: 45-50 parts.
Description
Technical Field
The invention relates to a water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance and a preparation method thereof.
Background
With the rapid development of the coating industry and the improvement of the attention degree of human beings on environmental pollution, the water-based coating becomes, at present, a research hotspot and a development direction are focused, and the water-based alkyd resin coating has an important position in the industries of vehicles, engineering machinery, mining machinery, steel structures and the like due to the characteristics of simple and convenient preparation process, easily available raw materials, low pollution and low energy consumption, but the water-based alkyd resin has the defects of slow drying of a coating, low coating hardness, obvious water resistance, solvent resistance and corrosion resistance, and is limited in the application fields with higher requirements on humidity, low-temperature environment, weather resistance and corrosion resistance.
Disclosure of Invention
The invention aims to solve the technical problem of providing the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance and the preparation method thereof aiming at the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance comprises the following components in parts by weight:
epoxy modified alkyd prepolymer: 500-600 parts;
acrylic acid: 45-50 parts of a solvent;
methyl ester: 45-60 parts of;
isooctyl acrylate: 20-30 parts;
styrene: 150-200 parts;
accelerator (b): 25-35 parts;
cosolvent: 180-220 parts;
neutralizing agent: 45-50 parts.
The technical scheme of the invention is further defined as follows:
preferably, the epoxy modified alkyd prepolymer comprises the following components in parts by weight: oleic acid: 250-300 parts of epoxy resin: 280-300 parts of zinc oxide: 0.1-2 parts of isopentene acid: 1-5 parts of xylene: 20-40 parts.
Preferably, the accelerator is benzoyl peroxide.
Preferably, the cosolvent comprises the following components in parts by mass: ethylene glycol butyl ether: 330-360 parts, propylene glycol butyl ether: 140-180 parts of n-butyl alcohol: 45-55 parts.
Preferably, the neutralizing agent is triethylamine.
The invention also provides a preparation method of the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentenoic acid and the xylene according to the parts by weight, starting stirring when the temperature is raised to 110-130 ℃, heating to 150-160 ℃ for reflux, heating to 220-240 ℃, carrying out heat preservation reaction until the acid value is less than 5mgKOH/g to obtain an epoxy modified alkyd prepolymer, and cooling for later use;
(2) Uniformly mixing and stirring benzoyl peroxide serving as an accelerator, ethylene glycol butyl ether, n-butanol and propylene glycol methyl ether serving as cosolvents and the epoxy modified alkyd prepolymer to obtain a mixture A for later use;
(3) And (2) uniformly mixing and stirring the acrylic acid, the methyl acrylate, the isooctyl acrylate and the styrene according to the parts by weight to obtain a mixture B, dropwise adding the mixture B into the mixture A, keeping the temperature for 2-4h after dropwise adding is finished within 4-5 h, reducing the temperature to 80-85 ℃, adding the triethylamine, and keeping the temperature for 25-40min to obtain the water-soluble styrene-acrylic modified epoxy alkyd resin.
The invention has the beneficial effects that:
the invention introduces benzene ring and epoxy group in epoxy resin into molecular structure, because of the special molecular structure of epoxy resin, it has excellent adhesive force, chemical resistance and corrosion resistance, alkyd resin is modified by epoxy resin, adhesive force and salt fog resistance of the product to base material after film forming can be effectively improved, cosolvent is added to dissolve resin, resin viscosity is adjusted, storage stability is improved, coating smoothness is improved, simultaneously, soaking property is improved, initial drying time of the coating is shortened, acrylic acid, methyl ester, isooctyl acrylate and styrene are polymerized with prepolymer, molecular weight of the product is further improved, and actual drying time and hardness of the product can be effectively improved.
Detailed Description
Example 1
The embodiment provides a water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following components in parts by weight:
epoxy modified alkyd prepolymer: 500 parts;
acrylic acid: 45 parts of a binder;
methyl grease: 45 parts of (1);
isooctyl acrylate: 20 parts of a binder;
styrene: 150 parts;
benzoyl peroxide: 25 parts of (1);
cosolvent: 180 parts of (A);
triethylamine: 45 parts of (1);
the epoxy modified alkyd prepolymer comprises the following components in parts by weight: oleic acid: 250 parts of epoxy resin: 280 parts of zinc oxide: 0.8 part, isopentenoic acid: 2 parts of xylene: 20 parts of (1); the cosolvent comprises the following components in parts by mass: ethylene glycol butyl ether: 330 parts, propylene glycol butyl ether: 140 parts of n-butanol: and 45 parts of the total weight.
The invention also provides a preparation method of the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentene acid and the xylene according to the parts by weight, starting stirring when the temperature is raised to 110 ℃, heating to 155 ℃ for refluxing, heating to 220 ℃, performing heat preservation reaction until the acid value is less than 5mgKOH/g to obtain an epoxy modified alkyd prepolymer, and cooling for later use;
(2) Uniformly mixing and stirring benzoyl peroxide serving as an accelerator, ethylene glycol butyl ether, n-butanol and propylene glycol methyl ether serving as cosolvents and the epoxy modified alkyd prepolymer to obtain a mixture A for later use;
(3) And (2) uniformly mixing and stirring the acrylic acid, the methyl acrylate, the isooctyl acrylate and the styrene according to the parts by weight to obtain a mixture B, dropwise adding the mixture B into the mixture A, keeping the temperature for 3 hours after dropwise adding is finished within 4 hours, cooling the temperature to 80 ℃, adding triethylamine, and keeping the temperature for 30 inches to obtain the water-soluble styrene-acrylic modified epoxy alkyd resin.
Example 2
The embodiment provides a water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following components in parts by weight:
epoxy modified alkyd prepolymer: 550 parts of a mixture;
acrylic acid: 48 parts of a mixture;
methyl ester: 55 parts of a binder;
isooctyl acrylate: 25 parts of (1);
styrene: 180 parts of (A);
benzoyl peroxide: 30 parts of (1);
cosolvent: 200 parts of (A);
triethylamine: 48 parts of a mixture;
the epoxy modified alkyd prepolymer comprises the following components in parts by weight: oleic acid: 280 parts of epoxy resin: 290 parts of zinc oxide: 1.5 parts, isopentenoic acid: 3 parts of xylene: 30 parts of (1); the cosolvent comprises the following components in parts by mass: ethylene glycol butyl ether: 345 parts, propylene glycol butyl ether: 160 parts, n-butanol: 50 parts of the raw materials.
The invention also provides a preparation method of the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentene acid and the dimethylbenzene according to the parts by weight, starting stirring when the temperature is raised to 120 ℃, refluxing when the temperature is raised to 155 ℃, keeping the temperature to 230 ℃, reacting until the acid value is less than 5mgKOH/g to obtain an epoxy modified alkyd prepolymer, and cooling for later use;
(2) Uniformly mixing and stirring benzoyl peroxide serving as an accelerant and ethylene glycol butyl ether, n-butyl alcohol and propylene glycol methyl ether serving as cosolvents with the epoxy modified alkyd prepolymer to obtain a mixture A for later use;
(3) And (2) uniformly mixing and stirring the acrylic acid, the methyl methacrylate, the isooctyl acrylate and the styrene according to the parts to obtain a mixture B, dropwise adding the mixture B into the mixture A, keeping the temperature for 4 hours after the dropwise adding is finished within 5 hours, cooling the temperature to 83 ℃, adding triethylamine, and keeping the temperature for 35 minutes to obtain the water-soluble styrene-acrylic modified epoxy alkyd resin.
Example 3
The embodiment provides a water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following components in parts by weight:
epoxy modified alkyd prepolymer: 600 parts of water;
acrylic acid: 50 parts of a mixture;
methyl ester: 60 parts;
isooctyl acrylate: 30 parts of (1);
styrene: 200 parts of (A);
benzoyl peroxide: 35 parts of (B);
cosolvent: 220 parts of (1);
triethylamine: 50 parts of a mixture;
the epoxy modified alkyd prepolymer comprises the following components in parts by weight: oleic acid: 300 parts of epoxy resin: 300 parts of zinc oxide: 2 parts, isopentenoic acid: 5 parts of xylene: 40 parts of a mixture; the cosolvent comprises the following components in parts by mass: ethylene glycol butyl ether: 360 parts, propylene glycol butyl ether: 180 parts, n-butanol: and 55 parts.
The invention also provides a preparation method of the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance, which comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentene acid and the xylene according to the parts by weight, starting stirring when the temperature is raised to 130 ℃, heating to 155 ℃ for refluxing, heating to 240 ℃, performing heat preservation reaction until the acid value is less than 5mgKOH/g to obtain an epoxy modified alkyd prepolymer, and cooling for later use;
(2) Uniformly mixing and stirring benzoyl peroxide serving as an accelerant and ethylene glycol butyl ether, n-butyl alcohol and propylene glycol methyl ether serving as cosolvents with the epoxy modified alkyd prepolymer to obtain a mixture A for later use;
(3) And (2) uniformly mixing and stirring the acrylic acid, the methyl acrylate, the isooctyl acrylate and the styrene according to the parts by weight to obtain a mixture B, dropwise adding the mixture B into the mixture A, keeping the temperature for 4 hours after dropwise adding is completed within 5 hours, cooling the temperature to 80 ℃, adding triethylamine, and keeping the temperature for 40 minutes to obtain the water-soluble styrene-acrylic modified epoxy alkyd resin.
TABLE 1 Performance parameters of the examples
| Reference index | EXAMPLE 1 | EXAMPLE 2 | EXAMPLE 3 | |
| Surface drying time/h | ≤4 | 1.2 | 1 | 1 |
| Actual drying time/h | ≤24 | 21 | 23 | 24 |
| Adhesion/grade | ≤1 | 1 | 1 | 1 |
| Water resistance/h | 240 | 240 | 240 | 240 |
| Salt water resistance per hour | 120 | 120 | 120 | 120 |
| Hardness of | ≥0.2 | 0.45 | 0.6 | 0.65 |
| High salt fog resistance per hour | 120 | 120 | 120 | 120 |
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. The water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance is characterized by comprising the following components in parts by weight:
epoxy modified alkyd prepolymer: 500-600 parts;
acrylic acid: 45-50 parts of a solvent;
methyl grease: 45-60 parts of;
isooctyl acrylate: 20-30 parts of a solvent;
styrene: 150-200 parts;
accelerator (b): 25-35 parts;
cosolvent: 180-220 parts;
neutralizing agent: 45-50 parts.
2. The water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance as claimed in claim 1, wherein the epoxy modified alkyd prepolymer comprises the following components in parts by weight: oleic acid: 250-300 parts of epoxy resin: 280-300 parts of zinc oxide: 0.1-2 parts of isopentene acid: 1-5 parts of xylene: 20-40 parts.
3. The water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance as claimed in claim 1, wherein the accelerator is benzoyl peroxide.
4. The water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance as claimed in claim 1, wherein the cosolvent comprises the following components in parts by mass: ethylene glycol butyl ether: 330-360 parts, propylene glycol butyl ether: 140-180 parts of n-butyl alcohol: 45-55 parts.
5. The water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance as claimed in claim 1, wherein the neutralizing agent is triethylamine.
6. The preparation method of the water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance as claimed in any one of claims 1-5, comprising the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentenoic acid and the xylene according to the parts by weight, starting stirring when the temperature is raised to 110-130 ℃, heating to 150-160 ℃ for reflux, heating to 220-240 ℃, carrying out heat preservation reaction until the acid value is less than 5mgKOH/g to obtain an epoxy modified alkyd prepolymer, and cooling for later use;
(2) Uniformly mixing and stirring benzoyl peroxide serving as an accelerator, ethylene glycol butyl ether, n-butanol and propylene glycol methyl ether serving as cosolvents and the epoxy modified alkyd prepolymer to obtain a mixture A for later use;
(3) And (2) uniformly mixing and stirring the acrylic acid, the methyl acrylate, the isooctyl acrylate and the styrene according to the parts by weight to obtain a mixture B, dropwise adding the mixture B into the mixture A, keeping the temperature for 2-4h after dropwise adding is finished within 4-5 h, reducing the temperature to 80-85 ℃, adding the triethylamine, and keeping the temperature for 25-40min to obtain the water-soluble styrene-acrylic modified epoxy alkyd resin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211692827.4A CN115746212A (en) | 2022-12-28 | 2022-12-28 | Water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211692827.4A CN115746212A (en) | 2022-12-28 | 2022-12-28 | Water-soluble styrene-acrylic modified epoxy alkyd resin with high hardness and high salt spray performance and preparation method thereof |
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| CN115746212A true CN115746212A (en) | 2023-03-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102504668A (en) * | 2011-11-18 | 2012-06-20 | 杭州传化涂料有限公司 | Water-based primer-topcoat synthetic anti-corrosive paint for coating automobile spare parts and preparation method thereof |
| CN104086712A (en) * | 2014-06-19 | 2014-10-08 | 华南理工大学 | Epoxy acrylate modified waterborne alkyd resin and preparation method and application thereof |
| CN104497224A (en) * | 2014-12-04 | 2015-04-08 | 北京金汇利应用化工制品有限公司 | Low-acid-value and low-VOC aqueous acrylic acid and fatty acid modified epoxy resin |
| CN104513343A (en) * | 2014-12-04 | 2015-04-15 | 北京金汇利应用化工制品有限公司 | Preparation method for low acid value and low VOC waterborne acrylic acid and fatty acid modified epoxy resin |
| CN110669183A (en) * | 2019-11-18 | 2020-01-10 | 常州广树化工科技有限公司 | Formula and preparation method of acrylic acid modified waterborne epoxy ester resin |
-
2022
- 2022-12-28 CN CN202211692827.4A patent/CN115746212A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504668A (en) * | 2011-11-18 | 2012-06-20 | 杭州传化涂料有限公司 | Water-based primer-topcoat synthetic anti-corrosive paint for coating automobile spare parts and preparation method thereof |
| CN104086712A (en) * | 2014-06-19 | 2014-10-08 | 华南理工大学 | Epoxy acrylate modified waterborne alkyd resin and preparation method and application thereof |
| CN104497224A (en) * | 2014-12-04 | 2015-04-08 | 北京金汇利应用化工制品有限公司 | Low-acid-value and low-VOC aqueous acrylic acid and fatty acid modified epoxy resin |
| CN104513343A (en) * | 2014-12-04 | 2015-04-15 | 北京金汇利应用化工制品有限公司 | Preparation method for low acid value and low VOC waterborne acrylic acid and fatty acid modified epoxy resin |
| CN110669183A (en) * | 2019-11-18 | 2020-01-10 | 常州广树化工科技有限公司 | Formula and preparation method of acrylic acid modified waterborne epoxy ester resin |
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