CN110294997A - A kind of aqueous epoxide resin paint and preparation method thereof - Google Patents
A kind of aqueous epoxide resin paint and preparation method thereof Download PDFInfo
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- CN110294997A CN110294997A CN201910616624.9A CN201910616624A CN110294997A CN 110294997 A CN110294997 A CN 110294997A CN 201910616624 A CN201910616624 A CN 201910616624A CN 110294997 A CN110294997 A CN 110294997A
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- epoxy resin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of aqueous epoxide resin paints and preparation method thereof, are related to technical field of coatings.It is characterized in that: a kind of aqueous epoxide resin paint, the component including following parts by weight: aqueous epoxy resin emulsion: 100-120 parts；Waterborne curing agent: 50-70 parts；Curing accelerator: 1-5 parts；Dispersing agent: 0.1-3 parts；Water: 80-250 parts；The aqueous epoxy resin emulsion is obtained by following preparation method: being weighed part epoxy and is mixed with polyethylene glycol, it is heated under the conditions of 90-110 DEG C, until polyethylene glycol all melts, potassium peroxydisulfate is added, it is warming up to 175-185 DEG C, after being stirred to react 3-3.5h, it is cooled to 45-55 DEG C, remaining epoxy resin is added, it is stirred to react 0.5-1h, water is added, obtains aqueous epoxy resin emulsion, by being modified processing to epoxy resin, have the advantages that hardness is big, adhesive force is high after product solidification obtained.
Description
Technical field
The present invention relates to technical field of coatings, more specifically, it relates to a kind of aqueous epoxide resin paint and its preparation
Method.
Background technique
Compared to traditional epoxy resin, aqueous epoxy resins energy conservation and environmental protection, low in cost, Transport Safety is high, construction
It is easy to operate, influenced the advantages that smaller by weather and have received extensive concern.Aqueous epoxy resins take water as a solvent, and are free of or containing pole
Few small organic molecule solvent, effectively reduces the influence to environment, reduces the pathogenetic probability of constructor's occupation.Aqueous ring
Epoxy resin system main application applies to: the numerous areas such as floor coatings, exterior coating, cement mortar, woodcare paint, Embedding Material
In.
Application No. is 2015108347429 Chinese invention patents to disclose a kind of preparation of water-base epoxy impregnated insulating paint
Method, by the material compositions such as epoxy resin, water, latent curing agent, promotor, epoxy mulser, polyvinyl alcohol, solidification speed
Degree is fast, but the compatibility between this application epoxy resin and water and curing agent that use is poor, and after solidification, there are small molecules
The case where precipitation, causes the insulated paint after solidifying to have the shortcomings that poor adhesive force, hardness are low.
It is, therefore, desirable to provide a kind of new scheme solves the above problems.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of epoxy coating, have
The advantage that hardness is big after solidification, adhesive force is high.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of aqueous epoxide resin paint, the component including following parts by weight:
Aqueous epoxy resin emulsion: 100-120 parts；
Waterborne curing agent: 50-70 parts；
Curing accelerator: 1-5 parts；
Dispersing agent: 0.1-3 parts；
Water: 80-250 parts；
The aqueous epoxy resin emulsion is obtained by following preparation method: it weighs part epoxy and is mixed with polyethylene glycol, in
It is heated under the conditions of 90-110 DEG C, until polyethylene glycol all melts, potassium peroxydisulfate is added, is warming up to 175-185 DEG C, is stirred to react
After 3-3.5h, it is cooled to 45-55 DEG C, remaining epoxy resin is added, is stirred to react 0.5-1h, water is added, obtains water-base epoxy
Resin emulsion.
By using above-mentioned technical proposal, using epoxy resin, polyethylene glycol and potassium peroxydisulfate as raw material, synthetic emulsifier,
The emulsifier epoxy resin is recycled, aqueous epoxy resin emulsion is obtained, due to being introduced in epoxy molecule
Hydroxyl in polyethylene glycol, so that epoxy resin has the characteristics that hydrophilic and oleophilic, itself has the function of compatilizer, can combine
Water and unmodified epoxy resin so that unmodified epoxy resin can after be stabilized in water, the lotion energy obtained
Enough temperature exist, and discharge in solidification process without any small molecule, and the hardness after solidification is big, and adhesive force is high.
Further preferably, the aqueous epoxy resin emulsion includes the component of following parts by weight:
Epoxy resin: 80-100 parts；
Polyethylene glycol: 25-50 parts；
Potassium peroxydisulfate: 0.5-2 parts；
Water: 100-200 parts.
By using above-mentioned technical proposal, the hydroxyl in polyethylene glycol is introduced into epoxy resin macromolecular chain, so that ring
Oxygen resin has the characteristic of hydrophilic and oleophilic, and modified epoxy resin is mixed with water and unmodified epoxy resin, obtained stable
Lotion carries out dispersion and compatible, the nonirritant taste of aqueous epoxide resin paint obtained without some organic solvents, right
Environment is non-hazardous.
Further preferably, when the epoxy resin is mixed with polyethylene glycol, polyethylene glycol accounts for the 1/4-1/2 of total weight.
By using above-mentioned technical proposal, using part epoxy as matrix, using polyethylene glycol and potassium peroxydisulfate to it
It is modified processing, the hydroxyl of polyethylene glycol is introduced in epoxy resin macromolecular, so that modified epoxy resin has parent
The characteristic of water oleophylic adds water and remaining epoxy resin, and stable aqueous epoxy resin emulsion is made.
Further preferably, the epoxy resin is in epoxy resin E-44, epoxy resin E-55, epoxy resin E-51
It is one or more.
By using above-mentioned technical proposal, bisphenol A type epoxy resin be by bisphenol-A, epoxychloropropane under alkaline condition
Condensation, through washing, the refined high-molecular compound of desolventizing, product obtained has good physical mechanical property, resistance to
Chemicals and electrical insulation properties.
Further preferably, the waterborne curing agent is selected from methyl hexahydrophthalic anhydride and/or methyl tetrahydro phthalic anhydride.
By using above-mentioned technical proposal, methyl hexahydrophthalic anhydride is colorless and transparent, and solidfied material has preferable moisture-proof, resistance to
It is high temperatures, and required curing time is shorter；Methyl tetrahydro phthalic anhydride volatility is small, toxicity is low, at room temperature can with epoxy resin
Miscible, the product after solidification has good insulation performance, mechanical strength and heat resistance.
Further preferably, the curing accelerator is selected from 2-ethyl-4-methylimidazole, 2- ethyl imidazol(e) and 2- methyl miaow
One of azoles is a variety of.
By using above-mentioned technical proposal, curing accelerator can promote the curing reaction of epoxy resin, shorten curing reaction
Time contains primary amine reactive hydrogen atom in imidazole curing agent molecular structure so that coating is not necessarily to higher temperature in solidification,
Itself plays the role of curing agent, in addition, in its molecule simultaneously also contain tertiary amine nitrogen-atoms, therefore can be used as epoxy resin with
Nucleophilic promotor between waterborne curing agent, so that fast and stable carries out reacting solid after energy between epoxy resin and waterborne curing agent
Change.
Further preferably, the dispersing agent in lauryl sodium sulfate, methyl anyl alcohol and polyacrylamide one
Kind is a variety of.
By using above-mentioned technical proposal, dispersing agent is one kind in the molecule while having lipophilic and two kinds of phases of hydrophily
The interfacial agent of reflexive matter improves compatibility and storage stability between waterborne curing agent and aqueous epoxy resin emulsion,
The sedimentation and cohesion that can prevent particle have the function of reducing viscosity of the coating.
The purpose of the present invention two is to provide a kind of preparation method of aqueous epoxide resin paint, using this method preparation
Epoxy coating has the advantages that hardness is big, high adhesion force.
To achieve the above object two, the present invention provides the following technical scheme that
A kind of preparation method of aqueous epoxide resin paint, comprising the following steps:
Step 1, according to formula, the aqueous epoxy resin emulsion and waterborne curing agent for weighing corresponding parts by weight are mixed, and are stirred
Mix 15-30min；
Step 2 continues to stir 0.5-2h after curing accelerator and dispersing agent is added dropwise；
Step 3 is eventually adding water, is mixed evenly, and obtains aqueous epoxide resin paint.
In conclusion compared with prior art, the invention has the following advantages:
(1) due to introducing the hydroxyl in polyethylene glycol in epoxy molecule, so that epoxy resin has hydrophilic and oleophilic
The characteristics of, itself has the function of compatilizer, can be in conjunction with water and unmodified epoxy resin, so that unmodified epoxy
Resin can after be stabilized in water, the lotion obtained can temperature exist, discharged without any small molecule in solidification process, solidification
Hardness afterwards is big, and adhesive force is high；
(2) modified epoxy resin is mixed with water and unmodified epoxy resin, obtains stable lotion, is had without some
Solvent carries out dispersion and compatible, the nonirritant taste of aqueous epoxide resin paint obtained, non-hazardous to environment.
Detailed description of the invention
Fig. 1 is the process flow chart of aqueous epoxide resin paint preparation in the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.It is worth noting that wherein being not specified specific
Condition person, lower according to conventional conditions or manufacturer's recommended conditions to carry out, reagents or instruments used without specified manufacturer,
For the conventional products that can be obtained by commercially available purchase.
Embodiment 1: a kind of aqueous epoxide resin paint, each component and its corresponding parts by weight are as shown in table 1, and pass through
Following steps prepare:
Step 1 prepares aqueous epoxy resin emulsion, weighs 1/4 epoxy resin E-44 and mixes with Macrogol 4000, in 90
It is heated under the conditions of DEG C, until Macrogol 4000 all melts, potassium peroxydisulfate is added, is warming up to 175 DEG C, is stirred to react 3h, drop
Remaining epoxy resin E-44 is added to 45 DEG C in temperature, is stirred to react 0.5h, and water is added, obtains aqueous epoxy resin emulsion；
Step 2 weighs aqueous epoxy resin emulsion and methyl hexahydrophthalic anhydride mixing, stirs 15min；
Step 3 continues to stir 0.5h after 2-ethyl-4-methylimidazole and lauryl sodium sulfate is added dropwise；
Step 4 is eventually adding water, is mixed evenly, and obtains aqueous epoxide resin paint.
Embodiment 2-6: a kind of aqueous epoxide resin paint, difference from example 1 is that, each component and its corresponding
Parts by weight it is as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-6 of table
Embodiment 7: acquisition is made by the steps in a kind of aqueous epoxide resin paint:
Step 1 prepares aqueous epoxy resin emulsion, weighs 40 parts of epoxy resin E-44s and mixes with 25 parts of Macrogol 4000s, in
It is heated under the conditions of 110 DEG C, until Macrogol 4000 all melts, 0.5 part of potassium peroxydisulfate is added, be warming up to 185 DEG C, stirring is anti-
3.5h is answered, is cooled to 55 DEG C, remaining 40 parts of epoxy resin E-44s are added, is stirred to react 1h, 100 parts of water is added, obtain aqueous
Epoxy resin latex；
Step 2 weighs 100 parts of aqueous epoxy resin emulsions obtained and 50 parts of methyl hexahydrophthalic anhydride mixing, stirring in step 1
30min；
Step 3 continues to stir 2h after 1 part of 2-ethyl-4-methylimidazole and 0.3 part of lauryl sodium sulfate is added dropwise；
Step 4 is eventually adding 80 parts of water, is mixed evenly, obtains aqueous epoxide resin paint.
Embodiment 8: a kind of aqueous epoxide resin paint, difference from example 1 is that, epoxy resin uses weight
Number is respectively 50 parts, 30 parts of epoxy resin E-44 and the mixture of epoxy resin E-55.
Embodiment 9: a kind of aqueous epoxide resin paint, difference from example 1 is that, epoxy resin uses weight
Number point than for 40 parts, 30 parts, 10 parts of epoxy resin E-44, epoxy resin E-55 and epoxy resin E-51 mixture.
Embodiment 10: a kind of aqueous epoxide resin paint, difference from example 1 is that, it is aqueous solid in step 2
Agent uses the mixture of 30 parts of methyl hexahydrophthalic anhydrides and 20 parts of methyl tetrahydro phthalic anhydrides.
Embodiment 11: a kind of aqueous epoxide resin paint, difference from example 1 is that, in step 3, solidification promotees
The mixture of 0.5 part of 2-ethyl-4-methylimidazole and 0.5 part of 2- ethyl imidazol(e) is used into agent.
Embodiment 12: a kind of aqueous epoxide resin paint, difference from example 1 is that, in step 3, solidification promotees
Into agent using the mixing of 0.2 part of 2-ethyl-4-methylimidazole, the mixture and 0.5 part of 2-methylimidazole of 0.3 part of 2- ethyl imidazol(e)
Object.
Embodiment 13: a kind of aqueous epoxide resin paint, difference from example 1 is that, in step 3, dispersing agent
Using the mixture of 0.1 part of lauryl sodium sulfate and 0.2 part of methyl anyl alcohol.
Embodiment 14: a kind of aqueous epoxide resin paint, difference from example 1 is that, in step 3, dispersing agent
Using 0.1 part of lauryl sodium sulfate, the mixture of 0.1 part of methyl anyl alcohol and 0.1 part of polyacrylamide.
Comparative example 1: a kind of aqueous epoxide resin paint is made as follows:
Step 1 weighs 100 parts of epoxy resin E-44s and 50 parts of methyl hexahydrophthalic anhydride mixing, stirs 15-30min；
Step 2 continues to stir 0.5h after 1 part of 2-ethyl-4-methylimidazole and 0.3 part of lauryl sodium sulfate is added dropwise；
Step 3 is eventually adding 80 parts of water, is mixed evenly, obtains aqueous epoxide resin paint；
This comparative example and the institute of embodiment 1 the difference is that, the unmodified processing of epoxy resin E-44.
Performance test
It is applied using aqueous epoxide resin paint made from embodiment 1-14, comparative example 1 and a commercially available aqueous epoxy resins
Material is used as experimental subjects.
According to adhesive force, hardness and the tensile strength of GB/T 1732-1993 test film, test result is included in down
In list 2.
By data in table 2 it is found that unmodified epoxy resin obtained coating and form a film after, adhesive force, hardness and
Intensity will be significantly lower than modified aqueous epoxide resin paint, of the invention compared to commercially available aqueous epoxide resin paint
Product is advantageous in terms of each physical mechanical property.
2 the performance test results of table
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of aqueous epoxide resin paint, which is characterized in that the component including following parts by weight:
Aqueous epoxy resin emulsion: 100-120 parts；
Waterborne curing agent: 50-70 parts；
Curing accelerator: 1-5 parts；
Dispersing agent: 0.1-3 parts；
Water: 80-250 parts；
The aqueous epoxy resin emulsion is obtained by following preparation method: it weighs part epoxy and is mixed with polyethylene glycol, in
It is heated under the conditions of 90-110 DEG C, until polyethylene glycol all melts, potassium peroxydisulfate is added, is warming up to 175-185 DEG C, is stirred to react
After 3-3.5h, it is cooled to 45-55 DEG C, remaining epoxy resin is added, is stirred to react 0.5-1h, water is added, obtains water-base epoxy
Resin emulsion.
2. aqueous epoxide resin paint according to claim 1, which is characterized in that the aqueous epoxy resin emulsion includes
The component of following parts by weight:
Epoxy resin: 80-100 parts；
Polyethylene glycol: 25-50 parts；
Potassium peroxydisulfate: 0.5-2 parts；
Water: 100-200 parts.
3. aqueous epoxide resin paint according to claim 2, which is characterized in that the epoxy resin and polyethylene glycol are mixed
When conjunction, polyethylene glycol accounts for the 1/4-1/2 of total weight.
4. aqueous epoxide resin paint according to claim 3, which is characterized in that the epoxy resin is selected from epoxy resin
One of E-44, epoxy resin E-55, epoxy resin E-51 or a variety of.
5. aqueous epoxide resin paint according to claim 1, which is characterized in that the waterborne curing agent is selected from methyl six
Hydrogen phthalic anhydride and/or methyl tetrahydro phthalic anhydride.
6. aqueous epoxide resin paint according to claim 1, which is characterized in that the curing accelerator is selected from 2- second
One of base -4-methylimidazole, 2- ethyl imidazol(e) and 2-methylimidazole are a variety of.
7. aqueous epoxide resin paint according to claim 1, which is characterized in that the dispersing agent is selected from dodecyl sulphur
One of sour sodium, methyl anyl alcohol and polyacrylamide are a variety of.
8. a kind of preparation method of aqueous epoxide resin paint, which comprises the following steps:
Step 1, according to formula, the aqueous epoxy resin emulsion and waterborne curing agent for weighing corresponding parts by weight are mixed, and are stirred
Mix 15-30min；
Step 2 continues to stir 0.5-2h after curing accelerator and dispersing agent is added dropwise；
Step 3 is eventually adding water, is mixed evenly, and obtains aqueous epoxide resin paint.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457740A (en) * | 2020-10-29 | 2021-03-09 | 内蒙古农业大学 | Coupling agent modified nano-cellulose grafted epoxy resin composite water-based paint and preparation method thereof |
| CN113307984A (en) * | 2021-04-29 | 2021-08-27 | 广西桂林荣鑫新材料科技有限公司 | Preparation method of aqueous epoxy resin dispersion |
| CN114133824A (en) * | 2021-11-23 | 2022-03-04 | 无锡洪汇新材料科技股份有限公司 | Waterproof coating for wall surface and preparation method thereof |
| CN114958144A (en) * | 2022-06-10 | 2022-08-30 | 韶关市和荣化工有限公司 | Water-based woodenware coating and preparation method thereof |
| CN115926583A (en) * | 2022-11-30 | 2023-04-07 | 广东美涂士建材股份有限公司 | Environment-friendly modified epoxy resin coating and preparation method thereof |
| CN115960370A (en) * | 2022-12-27 | 2023-04-14 | 江苏扬农锦湖化工有限公司 | Water-based epoxy resin and preparation method thereof |
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| CN107236413A (en) * | 2017-05-10 | 2017-10-10 | 广东富毅电气绝缘材料有限公司 | A kind of single-component water-based epoxy resin coating and preparation method thereof |
| CN107603410A (en) * | 2017-10-13 | 2018-01-19 | 武汉工程大学 | Floor coatings aqueous epoxy resin emulsion and preparation method thereof |
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| CN104558524A (en) * | 2013-10-21 | 2015-04-29 | 北京化工大学 | Preparation method for non-ionic reactive water-borne epoxy resin emulsion |
| CN107033739A (en) * | 2017-05-09 | 2017-08-11 | 重庆交通大学 | Regulatable non-ion aqueous epoxy emulsion of film pliability and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457740A (en) * | 2020-10-29 | 2021-03-09 | 内蒙古农业大学 | Coupling agent modified nano-cellulose grafted epoxy resin composite water-based paint and preparation method thereof |
| CN113307984A (en) * | 2021-04-29 | 2021-08-27 | 广西桂林荣鑫新材料科技有限公司 | Preparation method of aqueous epoxy resin dispersion |
| CN114133824A (en) * | 2021-11-23 | 2022-03-04 | 无锡洪汇新材料科技股份有限公司 | Waterproof coating for wall surface and preparation method thereof |
| CN114958144A (en) * | 2022-06-10 | 2022-08-30 | 韶关市和荣化工有限公司 | Water-based woodenware coating and preparation method thereof |
| CN115926583A (en) * | 2022-11-30 | 2023-04-07 | 广东美涂士建材股份有限公司 | Environment-friendly modified epoxy resin coating and preparation method thereof |
| CN115960370A (en) * | 2022-12-27 | 2023-04-14 | 江苏扬农锦湖化工有限公司 | Water-based epoxy resin and preparation method thereof |
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Application publication date: 20191001 |