CN112080188B - Preparation method of water-based epoxy surface paint suitable for electrical equipment - Google Patents
Preparation method of water-based epoxy surface paint suitable for electrical equipment Download PDFInfo
- Publication number
- CN112080188B CN112080188B CN202010966566.5A CN202010966566A CN112080188B CN 112080188 B CN112080188 B CN 112080188B CN 202010966566 A CN202010966566 A CN 202010966566A CN 112080188 B CN112080188 B CN 112080188B
- Authority
- CN
- China
- Prior art keywords
- water
- epoxy resin
- nano
- agent
- electrical equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/504—Amines containing an atom other than nitrogen belonging to the amine group, carbon and hydrogen
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a preparation method of a water-based epoxy surface paint suitable for electrical equipment, which comprises the following steps: mixing water-based epoxy resin, a film-forming additive and part of water to prepare a mixed solution; adding modified nano Al formed by mixing modified nano aluminum oxide and modified nano silicon dioxide according to the mass ratio of 30-50: 1 into the mixed solution under the condition of stirring2O3/SiO2(ii) a Modified nano Al2O3/SiO2The feeding mass ratio of the epoxy resin to the waterborne epoxy resin is 0.04-0.20: 1; then adding the curing agent and the rest raw materials, and mixing to obtain the product; the curing agent is prepared by the addition reaction of diethylenetriamine and polypropylene glycol diglycidyl ether to prepare an addition product, and then the addition product reacts with a compound of epoxy resin E-20 and epoxy resin E-12; the surface paint prepared by the method disclosed by the invention has excellent heat resistance, corrosion resistance and arc resistance on the premise of excellent hydrophilicity, and can be dried at room temperature.
Description
The invention is a divisional application of Chinese invention patent application with application date of 29/10/2018, application number of 2018112670375 and name of 'aqueous epoxy surface paint suitable for electrical equipment and a preparation method and application thereof'.
Technical Field
The invention belongs to the technical field of electrical equipment, particularly relates to insulating paint for electrical equipment, and particularly relates to a preparation method of water-based epoxy surface paint suitable for electrical equipment.
Background
With the continuous improvement of the environmental protection requirement, the defects of the traditional solvent-based insulating paint are gradually obvious, so that the water-based impregnating paint is used more and more, and the requirement of the water-based surface paint as a matched surface paint is increased. The applicant has engaged in the research and development of solvent-based and water-based epoxy surface paints, and the water-based epoxy surface paint is prepared by adding an emulsifier, a curing agent and the like into modified epoxy resin at present. Although the prepared water-based epoxy surface paint has zero or extremely low VOC content compared with the traditional solvent type, and the water-based epoxy resin taking water as a dispersion medium or a solvent does not pollute the environment and conforms to the national sustainable development strategy, the currently prepared water-based epoxy surface paint has many defects, such as short arc-resistant time, poor adhesion, poor corrosion resistance, slow drying speed and the like, thereby limiting the application and development of the water-based epoxy surface paint.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and provide an improved preparation method of the waterborne epoxy surface paint suitable for electrical equipment.
In order to solve the technical problems, the invention adopts a technical scheme as follows:
the water-thinned epoxy surface paint for electric equipment consists of water thinned epoxy resin, filming assistant, water soluble paint and water soluble paint,Dispersing agent, curing accelerator and water, wherein the raw materials also comprise modified nano Al2O3/SiO2The modified nano Al2O3/SiO2Is formed by mixing modified nano-alumina and modified nano-silica according to the mass ratio of 30-50: 1, wherein the modified nano-Al2O3/SiO2The mass ratio of the epoxy resin to the waterborne epoxy resin is 0.04-0.20: 1.
According to some preferred aspects of the present invention, the curing agent is prepared by: the curing agent is prepared by reacting a compound of epoxy resin E-20 and epoxy resin E-12 with diethylenetriamine and polypropylene glycol diglycidyl ether to prepare an adduct. The specific curing agent can improve the comprehensive performance of the waterborne epoxy surface paint, especially the adhesive force of the waterborne epoxy surface paint.
According to a further preferred aspect of the invention, the mass ratio of the charge of diethylenetriamine, polypropylene glycol diglycidyl ether and the compound is 1-5:0.4-0.6: 1.
According to a further preferred aspect of the present invention, the feeding mass ratio of the epoxy resin E-20 to the epoxy resin E-12 in the composite is 2-5: 1.
According to a further preferred aspect of the present invention, the charge mass ratio of the curing agent to the aqueous epoxy resin is 0.3-0.4: 1.
According to a further preferred aspect of the present invention, in the method for preparing the curing agent, each reaction step is controlled to be separately performed at 60 to 70 ℃.
According to a further preferred aspect of the present invention, in the method for preparing the curing agent, each reaction step is controlled to be separately performed under the protection of a protective gas. According to a particular aspect of the invention, the protective gas may be nitrogen.
According to a specific aspect of the present invention, the preparation method of the curing agent comprises the following steps: under the protection of dry nitrogen, adding diethylenetriamine into a four-mouth bottle provided with a thermometer, a reflux condenser tube, mechanical stirring and a dropping funnel, starting to slowly drop polypropylene glycol diglycidyl ether when the temperature reaches 60-70 ℃ (preferably 63-68 ℃), and keeping the temperature for reaction to obtain a diethylenetriamine-polypropylene glycol diglycidyl ether adduct; adding a certain amount of diethylene glycol butyl ether at the later stage of distillation, and distilling the diethylene glycol butyl ether and a small amount of diethylenetriamine together; and (3) dropwise adding a compound solution of epoxy resin E-20 and epoxy resin E-12 dispersed in propylene glycol methyl ether into the diethylenetriamine-polypropylene glycol diglycidyl ether adduct under the protection of nitrogen at 60-70 ℃ (preferably 63-68 ℃), and reacting to obtain the curing agent.
According to some preferred aspects of the present invention, the aqueous epoxy resin is made by reacting bisphenol a, a compound containing a hydrophilic group, and epichlorohydrin.
According to a further preferred aspect of the present invention, the hydrophilic group-containing compound is diethanolamine.
According to a further preferred aspect of the present invention, the charged mass ratio of the bisphenol a, the hydrophilic group-containing compound and the epichlorohydrin is 1-2: 0.1-0.2: 1.
According to a further preferred aspect of the present invention, the reaction is controlled to be carried out at a temperature of 70 to 90 ℃ during the preparation of the aqueous epoxy resin.
According to a specific aspect of the present invention, the preparation method of the water-based epoxy resin comprises the following steps: dissolving bisphenol A and a compound containing hydrophilic groups in a NaOH aqueous solution with the concentration of 5-15%, quickly adding epoxy chloropropane at the temperature of 70-90 ℃, reacting, controlling the temperature, and standing after the reaction is finished; and removing the upper layer alkaline water, washing the residual substances with hot water until the substances are neutral to remove alkaline residues and byproducts in the resin, and performing vacuum dehydration on the obtained product to obtain a light yellow transparent viscous liquid, namely the water-based epoxy resin.
According to some preferred aspects of the present invention, the modified nano alumina and the modified nano silica are obtained by grafting nano alumina and nano silica respectively through a silane coupling agent, wherein the silane coupling agent accounts for 0.5-1.0% of the total mass of the nano alumina and the nano silica.
According toIn one specific aspect of the invention, the modified nano Al2O3/SiO2The preparation method comprises the following steps: adding nano Al dried for 20 plus or minus 10 hours at the temperature of 180 plus or minus 10 ℃ in a three-neck flask2O3/SiO2(i.e., nano Al)2O3And nano SiO2Mixture of) about Al2O3/SiO2Silane coupling agent with the mass of 0.5-l% and xylene with the dosage of 150-300 times of that of the silane coupling agent, wherein a three-neck flask is provided with a stirring paddle and a condensing tube and is placed in an oil bath at 110-120 ℃ for reflux reaction for at least more than 4 hours, and then the modified nano Al is filtered out2O3/SiO2Washing with acetone for several times to remove excessive ungrafted silane coupling agent, and drying in a vacuum oven at 115 +/-10 ℃ to obtain the modified nano Al2O3/SiO2。
According to the invention, nano Al2O3And nano SiO2The particle diameters of the particles are respectively 30-80nm and 50-100 nm.
In some embodiments of the invention, the raw materials further comprise a combination of one or more of emulsifiers, wetting agents, defoamers, anti-tarnish agents, leveling agents, and thickeners.
According to some specific and preferred aspects of the present invention, the coalescing agent is 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate.
According to some specific and preferred aspects of the present invention, the dispersant is a pigment affinic group-containing block copolymer comprising BYK-163, merck-5032, germany.
According to some specific and preferred aspects of the present invention, the cure accelerator is japanese ajinomoto PN-23.
According to some specific and preferred aspects of the invention, the emulsifier is SYNTHRO-COR 609B pioneer france.
According to some specific and preferred aspects of the present invention, the wetting agent is a polyether modified siloxane copolymer including basf Hydropalat875, Dow HW-1000.
According to some specific and preferred aspects of the invention, the defoamer is a silicone-free foam breaking polymer comprising BYK-a500, BYK, germany.
According to some specific and preferred aspects of the present invention, the anti-tarnish flash agent is an aqueous silane coupling agent that is a combination of one or more selected from KH450, KH566, KH 578.
According to some specific and preferred aspects of the present invention, the leveling agent is the german bibk chemical BYK 380.
According to some specific and preferred aspects of the present invention, the thickener is a nonionic polyurethane-based associative thickener including south break down tide chemical HT-820, south break down tide chemical MA-2.
According to some specific and preferred aspects of the invention, the water is deionized water.
The invention provides another technical scheme that: the preparation method of the water-based epoxy surface paint suitable for the electrical equipment comprises the following steps:
(1) mixing the water-based epoxy resin, the film-forming additive and part of water, and optionally adding an emulsifier to prepare a mixed solution;
(2) adding modified nano Al into the mixed solution prepared in the step (1) under the condition of stirring2O3/SiO2；
(3) And then sequentially adding a curing agent, a dispersing agent, a wetting agent, a defoaming agent, a leveling agent and a curing agent accelerator, a flash rust inhibitor, a thickening agent and the residual water, and mixing to obtain the water-based epoxy surface paint suitable for the electrical equipment.
The invention provides another technical scheme that: the application of the water-based epoxy surface paint suitable for the electrical equipment in the electrical equipment.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
in the preparation method of the invention, nano Al is modified by specific proportion2O3/SiO2The modified waterborne epoxy resin avoids the problems of unsatisfactory modification caused by the uniformity of nano particle particles, difficult control of dispersity in the insulating paint and high inconsistency with the surface interface of the insulating paint in the conventional nano particle modification process, and particularly can simultaneously have excellent heat resistance, corrosion resistance and arc resistance on the premise of having excellent hydrophilicity. Meanwhile, the invention also realizes high storage stability, can be mixed and dissolved with water in any proportion, can realize room temperature drying, does not need surface drying treatment, has excellent adhesion property, has adhesion force reaching 0 grade, does not contain organic solvent and is environment-friendly.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples; it is to be understood that these embodiments are provided to illustrate the general principles, essential features and advantages of the present invention, and the present invention is not limited in scope by the following embodiments; the implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments.
In the following, all starting materials are either commercially available or prepared by conventional methods in the art, unless otherwise specified.
In the following, the modified nano Al2O3/SiO2Prepared by the following method: adding nano Al dried for 24 hours under vacuum at 180 ℃ into a three-neck flask2O3/SiO2(i.e., nano Al)2O3And nano SiO2About 50nm and about 80nm in particle size, respectively), about Al2O3/SiO2Silane coupling agent (type: N-octyl trimethoxy silane, purchased from national medicine group chemical reagent Co., Ltd.) with mass percent of l% and xylene with the dosage of 200 times of the silane coupling agent, wherein a three-neck flask is provided with a stirring paddle and a condenser tube and is placed in an oil bath with the temperature of 110-120 ℃ for reflux reaction for at least more than 4 hours, and then the mixture is filtered outNano Al after sexual intercourse2O3/SiO2Washing with acetone for several times to remove excessive ungrafted silane coupling agent, and drying in a vacuum oven at 120 deg.C to obtain the modified nano Al2O3/SiO2。
The waterborne epoxy resin is prepared by the following method: 230g of bisphenol A (purchased from national medicine group) and 22g of diethanolamine are dissolved in 10 percent NaOH aqueous solution, 150g of epichlorohydrin is rapidly added at the temperature of 70-90 ℃, the reaction is carried out, the temperature is controlled, and the mixture is kept stand after the reaction is finished; and removing the upper layer alkaline water, washing the residual substance with hot water until the residual substance is neutral to remove alkaline residues and byproducts in the resin, and performing vacuum dehydration on the obtained product to obtain a light yellow transparent viscous liquid, namely the water-based epoxy resin, wherein the weight of the water-based epoxy resin is about 120 g.
In the following, the curing agent is prepared by the following method: under the protection of dry nitrogen, 200g of diethylenetriamine is added into a four-mouth bottle provided with a thermometer, a reflux condenser tube, mechanical stirring and a dropping funnel, 50g of polypropylene glycol diglycidyl ether is slowly dropped when the temperature reaches 65 ℃, and the temperature is kept for reaction, so as to obtain a diethylenetriamine-polypropylene glycol diglycidyl ether adduct; adding diethylene glycol butyl ether at the later stage of distillation, and distilling the diethylene glycol butyl ether and a small amount of diethylenetriamine together; about 100g of the curing agent was prepared by dropping a composite solution of epoxy resin E-20(75g) and epoxy resin E-12(25g) dispersed in propylene glycol methyl ether at 65 ℃ under nitrogen protection to react.
Example 1
The embodiment provides a water-based epoxy surface paint suitable for electrical equipment, and a preparation method of the water-based epoxy surface paint comprises the following steps:
(1) weighing 100g of the aqueous epoxy resin prepared by the method, 20g of 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 2g of France SynTHRO-COR 609B and 80g of deionized water, and placing the materials on a stirrer to be fully stirred uniformly to form a mixed solution;
(2) adding 8g of the mixture into the mixture under stirringThe modified nano Al prepared by the method2O3/SiO2After the addition is finished, stirring is continued for 30 minutes so as to ensure that the mixture is fully and uniformly stirred to form mixed slurry;
(3) after being stirred uniformly, 40g of the curing agent prepared by the method, 0.5g of German BYK chemical BYK-163, 0.5g of Dow HW-1000, 0.5g of German BYK chemical BYK-A500, 0.5g of German BYK chemical BYK380, 5g of Japanese gourmet powder PN-23, 2g of KH566, 1g of Nantong break chemical HT-820 and 20g of deionized water are sequentially added to obtain the waterborne epoxy surface paint.
Example 2
The embodiment provides a water-based epoxy surface paint suitable for electrical equipment, and a preparation method of the water-based epoxy surface paint comprises the following steps:
(1) weighing 100g of the aqueous epoxy resin prepared by the method, 30g of 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 3g of France SynTHRO-COR 609B and 100g of deionized water, and placing the materials on a stirrer to be fully stirred uniformly to form a mixed solution;
(2) adding 9g of modified nano Al prepared by the method into the mixed solution under the condition of stirring2O3/SiO2After the addition is finished, stirring is continued for 30 minutes so as to ensure that the mixture is fully and uniformly stirred to form mixed slurry;
(3) after being uniformly stirred, 35g of the curing agent prepared by the method, 0.4g of German BYK chemical BYK-163, 0.4g of Dow HW-1000, 0.4g of German BYK chemical BYK-A500, 0.4g of German BYK chemical BYK380, 4g of Japanese gourmet powder PN-23, 1g of KH578, 0.8g of Nantong break Thailand chemical MA-2 and 15g of deionized water are sequentially added to obtain the waterborne epoxy surface paint.
Example 3
The embodiment provides a water-based epoxy surface paint suitable for electrical equipment, and a preparation method of the water-based epoxy surface paint comprises the following steps:
(1) weighing 120g of the aqueous epoxy resin prepared by the method, 40g of 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 4g of French SynTHRO-COR 609B and 130g of deionized water, and putting the mixture on a stirrer to be fully stirred uniformly to form a mixed solution;
(2) in the stirring processAdding 7g of modified nano Al prepared by the method into the mixed solution under the condition2O3/SiO2After the addition is finished, stirring is continued for 30 minutes so as to ensure that the mixture is fully and uniformly stirred to form mixed slurry;
(3) after the mixture is uniformly stirred, 40g of the curing agent prepared by the method, 0.6g of German Merck chemical MOK-5032, 0.4g of Pasteur Hydropalat875, 0.4g of German bike chemical BYK-A500, 0.4g of German bike chemical BYK380, 5g of Japanese monosodium PN-23, 2g of KH450, 1g of Nantong Tuitai chemical HT-820 and 20g of deionized water are sequentially added to obtain the waterborne epoxy surface paint.
Comparative example 1
Basically, the method is the same as example 1 except that the modified nano Al prepared by the method is used2O3/SiO2And replacing the nano silicon dioxide modified by a single silane coupling agent.
Comparative example 2
Basically, the method is the same as example 1, except that the modified nano alumina and the modified nano silica are adjusted to 10: 1 according to the feeding mass ratio.
Comparative example 3
The only difference was that the curing agent prepared by the above method was adjusted to a commercially available aqueous epoxy curing agent H202B, which is substantially the same as example 1.
Performance testing
The performance parameters of the cured coating films formed after the insulating paints prepared in examples 1 to 3 and comparative examples 1 to 3 were sprayed on the substrates are shown in Table 1.
TABLE 1
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (9)
1. A preparation method of a water-based epoxy surface paint suitable for electrical equipment is characterized by comprising the following steps:
(1) mixing the water-based epoxy resin, the film-forming additive and part of water, and optionally adding an emulsifier to prepare a mixed solution;
(2) adding modified nano Al into the mixed solution prepared in the step (1) under the condition of stirring2O3/SiO2；
Wherein the modified nano Al2O3/SiO2Is formed by mixing modified nano-alumina and modified nano-silica according to the mass ratio of 30-50: 1, wherein the modified nano-Al2O3/SiO2The feeding mass ratio of the epoxy resin to the waterborne epoxy resin is 0.04-0.20: 1; the modified nano-alumina and the modified nano-silica are obtained by grafting nano-alumina and nano-silica through a silane coupling agent respectively, wherein the silane coupling agent accounts for 0.5-1.0% of the total mass of the nano-alumina and the nano-silica, the particle size of the nano-alumina is 30-80nm, and the particle size of the nano-silica is 50-100 nm;
(3) then sequentially adding a curing agent, a dispersing agent, a wetting agent, a defoaming agent, a leveling agent and a curing agent accelerator, a flash rust inhibitor, a thickening agent and the residual water, and mixing to obtain the water-based epoxy surface paint suitable for the electrical equipment;
wherein the curing agent is prepared by the following method: the curing agent is prepared by carrying out addition reaction on diethylenetriamine and polypropylene glycol diglycidyl ether to prepare an addition product, and then reacting the addition product with a compound of epoxy resin E-20 and epoxy resin E-12, wherein the addition reaction and the reaction of the addition product and the compound are respectively controlled to be carried out at 60-70 ℃ in the presence of protective gas.
2. The process for preparing an aqueous epoxy topcoat paint suitable for electrical equipment as claimed in claim 1, wherein in step (1), the aqueous epoxy resin is prepared by reacting bisphenol a, a hydrophilic group-containing compound and epichlorohydrin, and the mass ratio of the charge of bisphenol a, hydrophilic group-containing compound and epichlorohydrin is 1-2: 0.1-0.2: 1.
3. The method for preparing an aqueous epoxy topcoat paint suitable for electrical equipment as claimed in claim 2, wherein in the step (1), the reaction is controlled to be performed at a temperature of 70-90 ℃ during the preparation of the aqueous epoxy resin, and the compound having a hydrophilic group is diethanolamine.
4. The method for preparing an aqueous epoxy topcoat paint suitable for electrical equipment as claimed in claim 1, wherein, in the step (2), the modified nano Al is2O3/SiO2The preparation method comprises the following steps: adding nano Al dried for 20 plus or minus 10 hours at the temperature of 180 plus or minus 10 ℃ in a three-neck flask2O3And nano SiO2Mixture of (1), nano Al2O3And nano SiO2Silane coupling agent accounting for 0.5-l% of the mixture and xylene accounting for 150 times of the silane coupling agent in amount, wherein the three-neck flask is provided with a stirring paddle and a condensing tube and is placed in an oil bath at 110-120 ℃ for reflux reaction for at least more than 4 hours, and then the modified nano Al is filtered out2O3/SiO2Washing with acetone for several times to remove excessive ungrafted silane coupling agent, and drying in a vacuum oven at 115 +/-10 ℃ to obtain the modified nano Al2O3/SiO2。
5. The method for preparing a water-based epoxy topcoat paint suitable for electrical equipment as claimed in claim 1, wherein in step (3), the mass ratio of the materials of said diethylenetriamine, said polypropylene glycol diglycidyl ether and said compound is 1-5:0.4-0.6:1, and the mass ratio of the materials of said epoxy resin E-20 and said epoxy resin E-12 in said compound is 2-5: 1.
6. The method for preparing a water-based epoxy surface paint suitable for electrical equipment as claimed in claim 1, wherein in the step (3), the charging mass ratio of the curing agent to the water-based epoxy resin is 0.3-0.4: 1.
7. The method for preparing an aqueous epoxy topcoat paint suitable for use in electrical equipment as claimed in claim 1, wherein the addition reaction, the reaction of the adduct with the compound, and the step (3) are controlled to be carried out at 63-68 ℃ respectively.
8. The method for preparing an aqueous epoxy topcoat paint suitable for use in electrical equipment according to claim 1, wherein the water in step (1) and step (3) is deionized water.
9. The method for producing an aqueous epoxy topcoat paint suitable for use in electrical equipment according to claim 1, wherein in step (1), the film-forming assistant is 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate; in the step (3), the dispersing agent is a block copolymer containing pigment affinity groups, and the block copolymer comprises Germany Bick chemical BYK-163 and Germany Merck chemical MOK-5032; the curing accelerator is Japanese gourmet powder PN-23; the wetting agent is polyether modified siloxane copolymer, and the polyether modified siloxane copolymer comprises basf Hydropalat875 and Dow HW-1000; the defoaming agent is a defoaming polymer without organic silicon, and the defoaming polymer comprises German Bick chemical BYK-A500; the antirust flashing agent is an aqueous silane coupling agent, and the aqueous silane coupling agent is one or a combination of more of KH450, KH566 and KH 578; the leveling agent is German Bike chemical BYK 380; the thickener is nonionic polyurethane associative thickener, and the nonionic polyurethane associative thickener comprises break-Thai chemical HT-820 and break-Thai chemical MA-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966566.5A CN112080188B (en) | 2018-10-29 | 2018-10-29 | Preparation method of water-based epoxy surface paint suitable for electrical equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966566.5A CN112080188B (en) | 2018-10-29 | 2018-10-29 | Preparation method of water-based epoxy surface paint suitable for electrical equipment |
| CN201811267037.5A CN109468020B (en) | 2018-10-29 | 2018-10-29 | Water-based epoxy surface paint suitable for electrical equipment and preparation method and application thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811267037.5A Division CN109468020B (en) | 2018-10-29 | 2018-10-29 | Water-based epoxy surface paint suitable for electrical equipment and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112080188A CN112080188A (en) | 2020-12-15 |
| CN112080188B true CN112080188B (en) | 2022-02-11 |
Family
ID=65666195
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010966566.5A Active CN112080188B (en) | 2018-10-29 | 2018-10-29 | Preparation method of water-based epoxy surface paint suitable for electrical equipment |
| CN201811267037.5A Active CN109468020B (en) | 2018-10-29 | 2018-10-29 | Water-based epoxy surface paint suitable for electrical equipment and preparation method and application thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811267037.5A Active CN109468020B (en) | 2018-10-29 | 2018-10-29 | Water-based epoxy surface paint suitable for electrical equipment and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN112080188B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011217A (en) * | 2022-06-22 | 2022-09-06 | 浙江天女集团制漆有限公司 | Insulating baking varnish and preparation method thereof |
| CN116694181A (en) * | 2023-05-08 | 2023-09-05 | 金华市通惠工贸有限公司 | Preparation method of high-hardness water-based paint for surface of vacuum cup |
| CN116855176B (en) * | 2023-06-26 | 2024-03-12 | 东莞市海发科技发展有限公司 | Metal surface treatment polishing solution and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104262906A (en) * | 2014-09-26 | 2015-01-07 | 西安理工大学 | Nanometer filler cooperatively filling epoxy resin composite coating as well as preparation method and application thereof |
| CN105038493A (en) * | 2015-06-17 | 2015-11-11 | 牛无畏 | Formula for preparing water-based epoxy paint |
| CN106398477A (en) * | 2016-09-18 | 2017-02-15 | 中石化石油工程技术服务有限公司 | Natural gas pipeline inner wall epoxy resin coating, and preparation method thereof |
| CN106833273A (en) * | 2017-02-09 | 2017-06-13 | 合肥英索莱特新材料科技有限公司 | Water corrosion-resistant epoxy paint |
| CN106987194A (en) * | 2017-04-14 | 2017-07-28 | 华南理工大学 | A kind of non-ion aqueous epoxy resin latex and nonionic waterborne epoxy curing agent and its preparation method and aqueous epoxy resins varnish |
| CN107880716A (en) * | 2017-11-22 | 2018-04-06 | 浙江加州国际纳米技术研究院台州分院 | A kind of nanometer strengthens water-based anticorrosive paint |
| CN107974166A (en) * | 2017-12-04 | 2018-05-01 | 宜兴市巨人涂料有限公司 | A kind of aqueous dual-component epoxy iron red shop primer and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000281966A (en) * | 1999-03-31 | 2000-10-10 | Bando Chem Ind Ltd | Powder coating coated sheet and use and preparation thereof |
| DE10326538A1 (en) * | 2003-06-12 | 2005-01-05 | Institut für Neue Materialien Gemeinnützige GmbH | Abrasion-resistant optical layers and shaped bodies |
| CN101020800A (en) * | 2007-02-15 | 2007-08-22 | 中国科学院上海硅酸盐研究所 | Insulating composite paint of nanometer inorganic matter and polymer and its prepn |
| KR100923750B1 (en) * | 2009-05-11 | 2009-10-27 | 주식회사 위스코 | Functional steel pipe for water and manufacturing method thereof |
| CN101781510B (en) * | 2010-02-03 | 2013-01-23 | 海洋王照明科技股份有限公司 | Bicomponent epoxy resin coating and preparation method thereof |
| CN106928807B (en) * | 2017-03-15 | 2018-10-09 | 广东中星科技股份有限公司 | A kind of super-amphiphobic anticorrosive paint and its preparation based on fluorine-silicon modified epoxy resin |
| CN108531040A (en) * | 2018-04-28 | 2018-09-14 | 湖州富美材料科技有限公司 | A kind of water-base epoxy priming paint and preparation method thereof |
-
2018
- 2018-10-29 CN CN202010966566.5A patent/CN112080188B/en active Active
- 2018-10-29 CN CN201811267037.5A patent/CN109468020B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104262906A (en) * | 2014-09-26 | 2015-01-07 | 西安理工大学 | Nanometer filler cooperatively filling epoxy resin composite coating as well as preparation method and application thereof |
| CN105038493A (en) * | 2015-06-17 | 2015-11-11 | 牛无畏 | Formula for preparing water-based epoxy paint |
| CN106398477A (en) * | 2016-09-18 | 2017-02-15 | 中石化石油工程技术服务有限公司 | Natural gas pipeline inner wall epoxy resin coating, and preparation method thereof |
| CN106833273A (en) * | 2017-02-09 | 2017-06-13 | 合肥英索莱特新材料科技有限公司 | Water corrosion-resistant epoxy paint |
| CN106987194A (en) * | 2017-04-14 | 2017-07-28 | 华南理工大学 | A kind of non-ion aqueous epoxy resin latex and nonionic waterborne epoxy curing agent and its preparation method and aqueous epoxy resins varnish |
| CN107880716A (en) * | 2017-11-22 | 2018-04-06 | 浙江加州国际纳米技术研究院台州分院 | A kind of nanometer strengthens water-based anticorrosive paint |
| CN107974166A (en) * | 2017-12-04 | 2018-05-01 | 宜兴市巨人涂料有限公司 | A kind of aqueous dual-component epoxy iron red shop primer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "水性环氧树脂固化剂的制备及其涂膜性能研究";陈培瑶等;《高分子通报》;20121231(第12期);第62-67页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112080188A (en) | 2020-12-15 |
| CN109468020A (en) | 2019-03-15 |
| CN109468020B (en) | 2020-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112080188B (en) | Preparation method of water-based epoxy surface paint suitable for electrical equipment | |
| CN107236437B (en) | A kind of water-based anticorrosive paint and preparation method thereof | |
| CN106867363B (en) | Solvent-free graphene modified epoxy resin mortar of a kind of humid zone rust and preparation method thereof | |
| CN109851759B (en) | Organic silicon modified epoxy resin, preparation method thereof and organic silicon modified epoxy resin adhesive | |
| CN106010161B (en) | A kind of water-based metal anti-corrosion material and preparation method thereof | |
| CN108997916A (en) | A kind of metal base long-effective corrosion floating coating and preparation method thereof | |
| CN106543898A (en) | A kind of automobile chassis single-component water-based epoxy-ester anti-corrosion primer and preparation method thereof | |
| CN104725969B (en) | Water-based anti-corrosion floating type aluminium powder paint and preparation method thereof | |
| CN107418277A (en) | A kind of water nano long-effective corrosion finish paint and preparation method thereof | |
| CN114752279A (en) | High-solid-content water-based graphene anticorrosive paint, and preparation method and application thereof | |
| CN114539461A (en) | Acrylate emulsion with linear gradient structure, water-based industrial paint and preparation method thereof | |
| CN113603841A (en) | Epoxy resin modified waterborne acrylic resin dispersoid | |
| CN112592654A (en) | Water-based high-temperature-resistant, anticorrosive and weather-resistant colorful orange-peel paint and preparation method thereof | |
| CN112980296A (en) | MPA/KH567/rGO reinforced waterborne epoxy amino baking paint and preparation method thereof | |
| CN117304775A (en) | Bi-component aqueous epoxy zinc-rich primer as well as preparation method and application thereof | |
| CN112457697A (en) | Superfine slag micro powder antirust primer and preparation method thereof | |
| CN115011215B (en) | Functionalized silica toughened epoxy resin coating and preparation method thereof | |
| CN114426795B (en) | High-solid epoxy paint, preparation method and application | |
| CN113480912A (en) | High-performance curing agent, preparation method thereof and application of curing agent in epoxy anticorrosive paint | |
| CN114573793A (en) | Preparation method of waterborne epoxy curing agent based on addition of cardanol glycidyl ether | |
| CN111718630A (en) | Water-based static conductive coating and preparation method thereof | |
| CN107083145A (en) | Aqueous high molecular alloy heavy antisepsis priming paint | |
| CN109355009B (en) | Organosilicon static conductive coating based on silicon-based imidazole ionic liquid | |
| CN111876045A (en) | High-temperature-resistant environment-friendly anticorrosive paint and preparation method thereof | |
| CN115746588B (en) | Modified aluminum powder filler, thermal control coating, coating and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |