CN113512337A - High-adhesion epoxy varnish modified based on load-type corrosion inhibitor and preparation method thereof - Google Patents
High-adhesion epoxy varnish modified based on load-type corrosion inhibitor and preparation method thereof Download PDFInfo
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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
- 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
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- 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
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- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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Abstract
The invention provides a high-adhesion epoxy varnish modified based on a load-type corrosion inhibitor, which comprises the following components in parts by weight: 30-35 parts of epoxy resin, 45-65 parts of solvent, 5-10 parts of butylated urea formaldehyde resin, 3-5 parts of HDI, 1-2 parts of adhesion promoter, 0.5-1.5 parts of defoaming and leveling agent, 0-0.1 part of acid catalyst and 3-6 parts of load type corrosion inhibitor; the supported corrosion inhibitor is obtained by inserting vanadate ions into the magnesium-aluminum hydrotalcite interlayer and then modifying the vanadate ions by adopting nano zirconia. The invention also discloses a preparation method of the epoxy varnish. The epoxy varnish prepared by the invention has good corrosion resistance and good bonding performance with a matrix and glue.
Description
The technical field is as follows:
the invention relates to the technical field of coatings, in particular to a high-adhesion epoxy varnish modified based on a load-type corrosion inhibitor.
Background art:
the high-speed train equipment cabin bottom plate is composed of an upper surface layer, a lower surface layer and a middle layer, an aluminum honeycomb and an aluminum plate are compounded to form a sandwich structure, and the upper surface layer, the lower surface layer and the middle layer are compounded into an integral bottom plate structure through glue water in a hot pressing mode. In order to improve the performances of corrosion resistance, impact resistance, adhesion and the like of the aluminum plate and the appearance effect, the aluminum plate needs to be painted.
Epoxy resin paint is also called epoxy paint, and is widely applied to the fields of machinery, electrical appliances, electronics, traffic and the like due to good adhesive property, chemical resistance, corrosion resistance, water resistance and the like. The epoxy resin varnish is coated on the surface of the aluminum plate, so that the corrosion resistance of the aluminum plate can be effectively improved, and the safety of the train chassis equipment is effectively improved.
The patent with the application number of 201810343794.X and the application date of 2018.04.17 provides an antifouling, antistatic and corrosion-resistant nano composite epoxy coating and a preparation method thereof, wherein the coating comprises epoxy resin, an auxiliary agent, a solvent, nano carbon concentrated slurry, a filler and a curing agent, and the preparation method comprises the steps of firstly modifying nano carbon powder by using a fluorosilane coupling agent, then preparing the modified nano carbon powder into nano carbon concentrated slurry, then adding the nano carbon concentrated slurry into a mixture of the epoxy resin, the solvent and the auxiliary agent, dispersing at a high speed, adding the filler, and grinding to obtain the nano carbon composite epoxy coating. The corrosion resistance of the coating is improved by using the graphene, nickel powder or mixed powder thereof as a filler in a synergistic manner. The patent with application number 201610089788.7 and application date 2016.02.18 provides a corrosion-resistant novolac epoxy coating, which comprises a component A and a component B, wherein the component A comprises novolac epoxy resin, a solvent, a thixotropic agent, an antifoaming agent, flaky iron oxide red, hollow glass microspheres, barite and a silane coupling agent, the component B comprises modified polyamide resin, and the A, B component is mixed when the corrosion-resistant novolac epoxy coating is used. Said invention adopts the combination of sheet iron oxide and hollow glass microsphere to improve the corrosion-resisting property of coating. It can be known from the above prior art that the inorganic filler is usually added into the coating matrix to improve the corrosion resistance of the coating, but how to solve the interface performance between the inorganic filler and the matrix, so that the addition of the inorganic filler does not affect other properties of the coating becomes critical. And when the composite anti-corrosion plate is manufactured, the adhesion between the coating and glue needs to be considered.
The invention content is as follows:
the invention aims to solve the technical problem that the prior art is not enough, and provides a high-adhesion epoxy varnish modified by a load-type corrosion inhibitor and a preparation method thereof. The invention adopts 907 epoxy resin, butylated urea formaldehyde resin and HDI, and adopts a high-temperature curing mechanism, so that the prepared coating has excellent corrosion resistance, impact resistance, adhesion and chemical resistance.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a high-adhesion epoxy varnish modified based on a supported corrosion inhibitor comprises the following components in parts by weight:
30-35 parts of epoxy resin, 45-65 parts of solvent, 5-10 parts of butylated urea formaldehyde resin, 3-5 parts of HDI, 1-2 parts of adhesion promoter, 0.5-1.5 parts of defoaming and leveling agent, 0-0.1 part of acid catalyst and 3-6 parts of load type corrosion inhibitor; the supported corrosion inhibitor is obtained by inserting vanadate ions into the magnesium-aluminum hydrotalcite interlayer and then modifying the vanadate ions by adopting nano zirconia; the butylated urea formaldehyde resin is one or a mixture of two of partial n-butyl ether, high imino urea formaldehyde resin, partial isobutyl ether and high imino urea formaldehyde resin.
Preferably, the solvent comprises 10-15 parts of cyclohexanone, 10-15 parts of ethylene glycol monobutyl ether and 25-35 parts of 100# solvent oil.
Preferably, the epoxy resin is 907 epoxy resin, and the epoxy equivalent is 1500-1800 g/eq.
In order to better solve the technical problems, the technical scheme adopted by the invention is as follows:
a preparation method of a high-adhesion epoxy varnish modified based on a supported corrosion inhibitor comprises the following steps:
(1) dissolving magnesium salt and aluminum salt in deionized water to prepare mixed metal salt solution, then adding urea, heating for reflux reaction, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare the layered magnesium-aluminum hydrotalcite material; then adding the prepared layered magnesium-aluminum hydrotalcite material into an ammonium vanadate solution in nitrogen atmosphere, stirring, washing the precipitate, and drying in vacuum to obtain an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material;
(2) adding an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and sodium dodecyl sulfate into deionized water, stirring to prepare a dispersion solution, adding nano zirconium oxide powder, stirring and dispersing under a nitrogen atmosphere, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding a solvent into a feeding tank, adding 907 epoxy resin, heating to react, cooling to below 45 ℃, sequentially adding butyl etherified urea formaldehyde resin, HDI, an adhesion promoter, a defoaming and leveling agent, an acid catalyst and a supported corrosion inhibitor, and stirring to obtain the high-adhesion epoxy varnish.
Preferably, in the step (1), the magnesium salt is magnesium chloride hexahydrate, the aluminum salt is aluminum nitrate nonahydrate, the concentrations of the magnesium salt and the aluminum salt in the mixed metal salt solution are 0.01mol/L and 0.005mol/L, respectively, and the mass concentrations of the magnesium salt and the aluminum salt in the urea solution are as follows: the molar ratio of urea is 2: 1: 7; the temperature of the reflux reaction is 100 ℃, and the time is 20-25 h.
Preferably, in the step (1), the concentration of the ammonium vanadate solution is 0.015-0.025mlol/L, and the dosage ratio of the layered magnesium aluminum hydrotalcite material to the ammonium vanadate solution is 1:200 ml.
Preferably, in the step (2), the mass ratio of the ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material, the sodium dodecyl sulfate and the nano zirconia powder is 10 (0.1-0.3): 1.
preferably, in the step (2), the rotation speed of the stirring treatment is 3000-5000 rpm, the temperature is room temperature, and the time is 10-20 h.
Preferably, in the step (3), the reaction is carried out for 1.5 to 2.5 hours in total by raising the temperature to 95 ℃ and keeping the temperature at 100. + -. 3 ℃ while counting the time.
Preferably, in the step (3), when the stirring is started, the stirring rotation speed is set to 500-.
The defoaming and leveling agent can be selected from an organic silicon defoaming and leveling agent, and the acid catalyst can be selected from dodecyl benzene sulfonic acid, phosphoric acid and p-toluenesulfonic acid.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the high-adhesion epoxy varnish provided by the invention comprises epoxy resin, a solvent, butylated urea formaldehyde resin, HDI (high Density epoxy), an adhesion promoter, a defoaming and leveling agent, an acid catalyst and a supported corrosion inhibitor, wherein the epoxy resin is 907 epoxy resin, and the epoxy resin has excellent performances of corrosion resistance, impact resistance, adhesion, chemical resistance, hardness, adhesion and the like, can effectively reduce loss and save cost; according to the invention, HDI is selected and matched with butylated urea formaldehyde resin as a cross-linking agent, so that the hardness and flexibility of the coating can be improved, and the bonding force between the coating and a base material and between the coating and glue can be improved; according to the invention, a trace amount of acid catalyst is added into the coating substrate, so that the curing time of the coating can be effectively accelerated, the reaction strength of the resin substrate and the cross-linking agent is improved, and the chemical resistance and corrosion resistance of the coating are improved; the invention also adds a certain amount of load-type corrosion inhibitor into the coating, wherein the load-type corrosion inhibitor is obtained by adopting vanadate ions to intercalate into the layers of the magnesium-aluminum hydrotalcite material and then adopting nano zirconia particles to modify; when the matrix is in a corrosive environment, the anion exchange characteristic of the magnesium-aluminum hydrotalcite can reduce the anion concentration in the environment, and the release of the ammonium vanadate between layers of the magnesium-aluminum hydrotalcite can be activated through the anion exchange in the environment so as to capture corrosive anions in the environment, thereby achieving the purpose of protecting the matrix. The nano zirconia particles are modified on the surface of the magnesium-aluminum hydrotalcite material to form a physical barrier, so that the purpose of corrosion prevention is achieved.
According to the invention, the magnesium-aluminum hydrotalcite material is prepared by adopting a coprecipitation method, then vanadate ion exchange is adopted to modify the magnesium-aluminum hydrotalcite material, ammonium vanadate intercalation enters the magnesium-aluminum hydrotalcite layers, and nano zirconia particles are adopted for modification, so that the dispersibility of nano zirconia and the magnesium-aluminum hydrotalcite material in a matrix is effectively improved, and the nano zirconia and the magnesium-aluminum hydrotalcite material are added into an epoxy varnish matrix, so that the corrosion resistance of a coating is effectively improved. When the epoxy varnish prepared by the invention acts on an aluminum plate substrate, the epoxy varnish has good bonding force with an aluminum plate, and has excellent bonding performance with glue, the prepared coating has excellent corrosion resistance, good mechanical property, simple preparation method and low cost.
The specific implementation mode is as follows:
in order to better understand the present invention, the following examples further illustrate the invention, the examples are only used for explaining the invention, not to constitute any limitation of the invention.
Example 1
(1) Dissolving 0.01mol of magnesium chloride hexahydrate and 0.005mol of aluminum nitrate nonahydrate in 1L of deionized water to prepare a mixed metal salt solution, then adding 0.035mol of urea, heating to 100 ℃, refluxing for reaction for 20 hours, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare a layered magnesium-aluminum hydrotalcite material; then adding 1g of the prepared layered magnesium aluminum hydrotalcite material into 200ml of 0.015 ml/L ammonium vanadate solution under the nitrogen atmosphere, stirring for 20 hours, finally washing the precipitate and drying in vacuum to prepare the ammonium vanadate intercalation modified magnesium aluminum hydrotalcite material;
(2) adding 10g of an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and 0.1g of sodium dodecyl sulfate into 100ml of deionized water, stirring to prepare a dispersion solution, adding 1g of nano zirconia powder, stirring and dispersing at room temperature at 3000 rpm in a nitrogen atmosphere for 10 hours, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding 10 parts of cyclohexanone, 10 parts of ethylene glycol monobutyl ether and 25 parts of No. 100 solvent oil solvent into a feeding tank, stirring and mixing uniformly, adding 30 parts of 907 epoxy resin, heating to 95 ℃, keeping the temperature while keeping the temperature, continuously heating to 100 ℃, carrying out a co-reaction for 1.5h, then cooling to below 45 ℃, sequentially adding 5 parts of butylated urea formaldehyde resin, 3 parts of HDI, 1 part of adhesion promoter, 0.5 part of organosilicon defoaming leveling agent, 0.1 part of p-toluenesulfonic acid and 3 parts of supported corrosion inhibitor, starting stirring, and stirring at a stirring speed of 500 revolutions per minute for 10 minutes to prepare the high-adhesion epoxy varnish.
Example 2
(1) Dissolving 0.01mol of magnesium chloride hexahydrate and 0.005mol of aluminum nitrate nonahydrate in 1L of deionized water to prepare a mixed metal salt solution, then adding 0.035mol of urea, heating to 100 ℃, carrying out reflux reaction for 25 hours, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare a layered magnesium-aluminum hydrotalcite material; then adding 1g of the prepared layered magnesium aluminum hydrotalcite material into 200ml of 0.025mlol/L ammonium vanadate solution under nitrogen atmosphere, stirring for 20h, finally washing the precipitate and drying in vacuum to prepare the ammonium vanadate intercalation modified magnesium aluminum hydrotalcite material;
(2) adding 10g of an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and 0.3g of sodium dodecyl sulfate into 100ml of deionized water, stirring to prepare a dispersion solution, adding 1g of nano zirconium oxide powder, stirring and dispersing at room temperature at 5000 rpm in a nitrogen atmosphere for 20 hours, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding 15 parts of cyclohexanone, 15 parts of ethylene glycol monobutyl ether and 35 parts of No. 100 solvent oil solvent into a feeding tank, stirring and mixing uniformly, adding 35 parts of 907 epoxy resin, heating to 95 ℃, keeping the temperature, continuously heating to 100 ℃, carrying out heat preservation, carrying out a co-reaction for 2.5h, cooling to below 45 ℃, sequentially adding 10 parts of butylated urea formaldehyde resin, 5 parts of HDI, 2 parts of adhesion promoter, 1.5 parts of organosilicon defoaming leveling agent, 0.1 part of p-toluenesulfonic acid and 6 parts of load type corrosion inhibitor, starting stirring, and stirring at a stirring speed of 600 revolutions per minute for 15 minutes to obtain the high-viscosity relay epoxy varnish.
Example 3
(1) Dissolving 0.01mol of magnesium chloride hexahydrate and 0.005mol of aluminum nitrate nonahydrate in 1L of deionized water to prepare a mixed metal salt solution, then adding 0.035mol of urea, heating to 100 ℃, refluxing for reaction for 21h, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare a layered magnesium-aluminum hydrotalcite material; then adding 1g of the prepared layered magnesium aluminum hydrotalcite material into 200ml of 0.02mlol/L ammonium vanadate solution under nitrogen atmosphere, stirring for 20 hours, finally washing the precipitate and drying in vacuum to prepare the ammonium vanadate intercalation modified magnesium aluminum hydrotalcite material;
(2) adding 10g of an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and 0.15g of sodium dodecyl sulfate into 100ml of deionized water, stirring to prepare a dispersion solution, adding 1g of nano zirconium oxide powder, stirring and dispersing at room temperature for 15 hours under the nitrogen atmosphere at 3500 rpm, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding 12 parts of cyclohexanone, 10 parts of ethylene glycol monobutyl ether and 30 parts of 100# solvent oil solvent into a feeding tank, stirring and mixing uniformly, adding 32 parts of 907 epoxy resin, heating to 95 ℃, keeping the temperature while keeping the temperature at 103 ℃, carrying out a co-reaction for 2 hours, cooling to below 45 ℃, sequentially adding 6 parts of butylated urea formaldehyde resin, 3.5 parts of HDI, 1 part of adhesion promoter, 1 part of organosilicon defoaming and leveling agent, 0.1 part of p-toluenesulfonic acid and 4 parts of supported corrosion inhibitor, starting stirring, and stirring at a stirring speed of 500 revolutions per minute for 15 minutes to obtain the high-viscosity epoxy varnish.
Example 4
(1) Dissolving 0.01mol of magnesium chloride hexahydrate and 0.005mol of aluminum nitrate nonahydrate in 1L of deionized water to prepare a mixed metal salt solution, then adding 0.035mol of urea, heating to 100 ℃, refluxing for reaction for 23 hours, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare a layered magnesium-aluminum hydrotalcite material; then adding 1g of the prepared layered magnesium aluminum hydrotalcite material into 200ml of 0.02mlol/L ammonium vanadate solution under nitrogen atmosphere, stirring for 20 hours, finally washing the precipitate and drying in vacuum to prepare the ammonium vanadate intercalation modified magnesium aluminum hydrotalcite material;
(2) adding 10g of an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and 0.2g of sodium dodecyl sulfate into 100ml of deionized water, stirring to prepare a dispersion solution, adding 1g of nano zirconium oxide powder, stirring and dispersing at the room temperature at 4000 rpm in a nitrogen atmosphere for 15h, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding 13 parts of cyclohexanone, 12 parts of ethylene glycol monobutyl ether and 30 parts of No. 100 solvent oil solvent into a feeding tank, stirring and mixing uniformly, adding 33 parts of 907 epoxy resin, heating to 95 ℃, keeping the temperature while keeping the temperature, continuously heating to 100 ℃, carrying out a co-reaction for 1.5h, then cooling to below 45 ℃, sequentially adding 7 parts of butylated urea formaldehyde resin, 4 parts of HDI, 2 parts of adhesion promoter, 1.5 parts of organosilicon defoaming leveling agent, 0.1 part of p-toluenesulfonic acid and 5 parts of supported corrosion inhibitor, starting stirring, and stirring at a stirring speed of 600 revolutions per minute for 10 minutes to prepare the high-adhesion epoxy varnish.
Example 5
(1) Dissolving 0.01mol of magnesium chloride hexahydrate and 0.005mol of aluminum nitrate nonahydrate in 1L of deionized water to prepare a mixed metal salt solution, then adding 0.035mol of urea, heating to 100 ℃, refluxing for 24 hours, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare a layered magnesium-aluminum hydrotalcite material; then adding 1g of the prepared layered magnesium aluminum hydrotalcite material into 200ml of 0.015 ml/L ammonium vanadate solution under the nitrogen atmosphere, stirring for 20 hours, finally washing the precipitate and drying in vacuum to prepare the ammonium vanadate intercalation modified magnesium aluminum hydrotalcite material;
(2) adding 10g of an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and 0.1g of sodium dodecyl sulfate into 100ml of deionized water, stirring to prepare a dispersion solution, adding 1g of nano zirconium oxide powder, stirring and dispersing at room temperature at 5000 rpm in a nitrogen atmosphere for 15h, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding 10 parts of cyclohexanone, 15 parts of ethylene glycol monobutyl ether and 35 parts of No. 100 solvent oil solvent into a feeding tank, stirring and mixing uniformly, adding 34 parts of 907 epoxy resin, heating to 95 ℃, keeping the temperature, continuously heating to 100 ℃, carrying out heat preservation, carrying out a co-reaction for 1.5h, cooling to below 45 ℃, sequentially adding 8 parts of butylated urea formaldehyde resin, 4.5 parts of HDI, 2 parts of adhesion promoter, 1 part of organosilicon defoaming leveling agent, 0.1 part of p-toluenesulfonic acid and 5 parts of load type corrosion inhibitor, starting stirring, and stirring at a stirring speed of 500 revolutions per minute for 15 minutes to obtain the high-viscosity relay epoxy varnish.
Comparative example 1
The supported corrosion inhibitor was not modified with nano zirconia powder, and the other conditions were the same as in example 5.
Comparative example 2
No supported corrosion inhibitor was added to the epoxy varnish and the other conditions were the same as in example 5.
Comparative example 3
Only HDI was added as a crosslinking agent and butylated urea formaldehyde resin was not added, and other conditions were the same as in example 5.
Comparative example 4
No p-toluenesulfonic acid was added as an acid catalyst, and other conditions were the same as in example 5.
The epoxy varnish prepared in the above examples and comparative examples is sprayed on the surface of the pretreated aluminum substrate, cured at the temperature of 216-:
TABLE 1
From the test results, the HDI and the butylated urea formaldehyde resin are added into the coating to be compounded to be used as a cross-linking agent, so that the hardness of the coating and the adhesive force between the coating and a base material can be effectively improved; the addition of the supported corrosion inhibitor into the coating substrate can improve the corrosion resistance of the coating, improve the hardness and strength of the coating, effectively shorten the curing time of the coating and improve the corrosion resistance of the coating due to the addition of a trace amount of acid catalyst into the coating.
Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (10)
1. The high-adhesion epoxy varnish modified based on the supported corrosion inhibitor is characterized by comprising the following components in parts by weight:
30-35 parts of epoxy resin, 45-65 parts of solvent, 5-10 parts of butylated urea formaldehyde resin, 3-5 parts of HDI, 1-2 parts of adhesion promoter, 0.5-1.5 parts of defoaming and leveling agent, 0-0.1 part of acid catalyst and 3-6 parts of load type corrosion inhibitor; the supported corrosion inhibitor is obtained by inserting vanadate ions into the magnesium-aluminum hydrotalcite interlayer and then modifying the vanadate ions by adopting nano zirconia; the butylated urea formaldehyde resin is one or a mixture of two of partial n-butyl ether, high imino urea formaldehyde resin, partial isobutyl ether and high imino urea formaldehyde resin.
2. The high-adhesion epoxy varnish modified based on the supported corrosion inhibitor as claimed in claim 1, wherein: the solvent comprises 10-15 parts of cyclohexanone, 10-15 parts of ethylene glycol monobutyl ether and 25-35 parts of No. 100 solvent oil.
3. The high-adhesion epoxy varnish modified based on the supported corrosion inhibitor as claimed in claim 1, wherein: the epoxy resin is 907 epoxy resin, and the epoxy equivalent is 1500-1800 g/eq.
4. The preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in any one of claims 1 to 3, is characterized by comprising the following steps:
(1) dissolving magnesium salt and aluminum salt in deionized water to prepare mixed metal salt solution, then adding urea, heating for reflux reaction, filtering after the reaction is finished, washing the obtained precipitate, and drying to prepare the layered magnesium-aluminum hydrotalcite material; then adding the prepared layered magnesium-aluminum hydrotalcite material into an ammonium vanadate solution in nitrogen atmosphere, stirring, washing the precipitate, and drying in vacuum to obtain an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material;
(2) adding an ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material and sodium dodecyl sulfate into deionized water, stirring to prepare a dispersion solution, adding nano zirconium oxide powder, stirring and dispersing under a nitrogen atmosphere, filtering, washing and drying a precipitate, and preparing a load-type corrosion inhibitor;
(3) adding the solvent into a feeding tank, stirring and mixing uniformly, adding 907 epoxy resin, heating for reaction, cooling to below 45 ℃, sequentially adding butyl etherified urea formaldehyde resin, HDI, an adhesion promoter, a defoaming and leveling agent, an acid catalyst and a supported corrosion inhibitor, starting stirring, and preparing the high-adhesion epoxy varnish.
5. The preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in claim 4, is characterized in that: in the step (1), the magnesium salt is magnesium chloride hexahydrate, the aluminum salt is aluminum nitrate nonahydrate, the concentrations of the magnesium salt and the aluminum salt in the mixed metal salt solution are respectively 0.01mol/L and 0.005mol/L, and the mass concentrations of the urea solution are as follows: the molar ratio of urea is 2: 1: 7; the temperature of the reflux reaction is 100 ℃, and the time is 20-25 h.
6. The preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in claim 4, is characterized in that: in the step (1), the concentration of the ammonium vanadate solution is 0.015-0.025mlol/L, and the dosage ratio of the layered magnesium aluminum hydrotalcite material to the ammonium vanadate solution is 1:200 ml.
7. The preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in claim 4, is characterized in that: in the step (2), the mass ratio of the ammonium vanadate intercalation modified magnesium-aluminum hydrotalcite material to the sodium dodecyl sulfate to the nano zirconia powder is (10), (0.1-0.3): 1.
8. the preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in claim 4, is characterized in that: in the step (2), the rotation speed of the stirring treatment is 3000-5000 rpm, the temperature is room temperature, and the time is 10-20 h.
9. The preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in claim 4, is characterized in that: in the step (3), during the heating reaction treatment, the temperature is raised to 95 ℃ for timing, and the temperature is raised to 100 +/-3 ℃ for heat preservation, so that the reaction lasts for 1.5-2.5 h.
10. The preparation method of the high-adhesion epoxy varnish modified based on the supported corrosion inhibitor, as claimed in claim 4, is characterized in that: in the step (3), when the stirring is started, the stirring speed is set to 500-.
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| CN116213227A (en) * | 2023-02-27 | 2023-06-06 | 中国石油大学(华东) | Preparation method of corrosion-resistant erosion-resistant multifunctional coating |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287967A (en) * | 1999-09-14 | 2001-03-21 | 北京化工大学 | Surface preparation of layered dihydroxy composite metal oxide powder |
| US20100080957A1 (en) * | 2008-10-01 | 2010-04-01 | Integrated Surface Technologies | Surface Coating |
| CN102395636A (en) * | 2009-04-13 | 2012-03-28 | 格雷斯公司 | High ph process resistant coating for metal food containers |
| WO2013083293A1 (en) * | 2011-12-08 | 2013-06-13 | Tata Steel Nederland Technology Bv | Anti-corrosion system for steel |
| CN104098346A (en) * | 2013-04-02 | 2014-10-15 | 中国科学院宁波材料技术与工程研究所 | Preparation method of golden yellow zirconium nitride coating on base surface |
| CN108589271A (en) * | 2018-07-11 | 2018-09-28 | 黄勇 | A kind of nano-far-infrared finishing agent and preparation method thereof |
| WO2021014492A1 (en) * | 2019-07-19 | 2021-01-28 | 株式会社ジェーエフシーテック | Anticorrosive filler used in organic paint, anticorrosive filler manufacturing method, and paint |
-
2021
- 2021-07-14 CN CN202110797195.7A patent/CN113512337B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287967A (en) * | 1999-09-14 | 2001-03-21 | 北京化工大学 | Surface preparation of layered dihydroxy composite metal oxide powder |
| US20100080957A1 (en) * | 2008-10-01 | 2010-04-01 | Integrated Surface Technologies | Surface Coating |
| CN102395636A (en) * | 2009-04-13 | 2012-03-28 | 格雷斯公司 | High ph process resistant coating for metal food containers |
| WO2013083293A1 (en) * | 2011-12-08 | 2013-06-13 | Tata Steel Nederland Technology Bv | Anti-corrosion system for steel |
| CN104098346A (en) * | 2013-04-02 | 2014-10-15 | 中国科学院宁波材料技术与工程研究所 | Preparation method of golden yellow zirconium nitride coating on base surface |
| CN108589271A (en) * | 2018-07-11 | 2018-09-28 | 黄勇 | A kind of nano-far-infrared finishing agent and preparation method thereof |
| WO2021014492A1 (en) * | 2019-07-19 | 2021-01-28 | 株式会社ジェーエフシーテック | Anticorrosive filler used in organic paint, anticorrosive filler manufacturing method, and paint |
Non-Patent Citations (2)
| Title |
|---|
| 张骄佼等: "镁铝水滑石的合成与应用研究进展", 《材料导报》 * |
| 欧育湘等: "《塑料助剂性能与选用速查手册》", 31 January 2012, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213227A (en) * | 2023-02-27 | 2023-06-06 | 中国石油大学(华东) | Preparation method of corrosion-resistant erosion-resistant multifunctional coating |
| CN116213227B (en) * | 2023-02-27 | 2023-10-17 | 中国石油大学(华东) | Preparation method of corrosion-resistant erosion-resistant multifunctional coating |
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