CN112111202A - Water-based environment-friendly fingerprint-resistant working solution for coil steel and preparation method thereof - Google Patents
Water-based environment-friendly fingerprint-resistant working solution for coil steel and preparation method thereof Download PDFInfo
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Abstract
The water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following components in percentage by weight: 20 to 35 percent of organic/inorganic composite modified resin, 0.1 to 1 percent of corrosion inhibitor, 0.1 to 2 percent of auxiliary agent and the balance of water. According to the invention, graphene oxide is reacted with hydroxyl on a silane coupling agent to form a covalent bond to be tightly combined, so that the graphene oxide modified by silane and the aqueous polymer resin containing the silane coupling agent are more easily dispersed and combined due to the similar and compatible polarities; due to the structure of rich oxygen functional groups on the surface of the graphene oxide, the graphene oxide is easy to generate covalent bonds with hydroxyl functional groups of the water-based polymer resin, so that the bonding force between the graphene oxide and the water-based polymer resin is enhanced, the excellent physical and chemical properties of the graphene can be introduced, and the environment-friendly fingerprint-resistant working solution compounded by the graphene has better corrosion resistance, chemical resistance, electrical conductivity and other properties on the basis of the original material properties.
Description
Technical Field
The invention belongs to the technical field of metal surface treatment agents, and particularly relates to a water-based environment-friendly fingerprint-resistant working solution for coil steel and a preparation method thereof.
Background
The fingerprint resistance treatment is a process of endowing the surface of a plating layer with fingerprint resistance and certain corrosion resistance after chemical and electrochemical treatment is carried out on the surface of a metal plate. The fingerprint-resistant plate is a composite coating plate obtained by performing fingerprint-resistant treatment on the surface of a galvanized plate or an aluminum-plated zinc plate. In the production process of household appliances, many parts are touched by workers for many times due to the process requirement, sweat stains on the hands of the workers pollute the surfaces of the parts, and the attractiveness is affected, so that the surfaces of the metal parts need to be subjected to fingerprint-resistant medicament treatment, and a fingerprint-resistant plate is researched and developed.
In the field of surface coating of coil steel, the traditional hexavalent chromium-containing fingerprint-resistant medicament has very good performance, but Cr (VI) is taken as a high-toxicity substance, is easily absorbed by a human body, and can invade the human body through digestion, respiratory tract, skin and mucosa. Vomiting and abdominal pain may be caused by the invasion of the digestive tract, and dermatitis and eczema may be produced by the invasion of the skin. The greatest harm is carcinogenic danger in long-term or short-term contact or inhalation, and persistent danger to the environment. Therefore, the problems need to be solved from the source, the use of the environment-friendly fingerprint resisting agent becomes extremely important, the composition of the fingerprint resisting agent does not contain chromium, and waste liquid is easy to treat and discharge and is harmless to the environment.
However, the common environment-friendly fingerprint resistant agent has no good performances such as corrosion resistance, chemical resistance and conductivity due to the structural restriction of the material, and cannot meet the higher performance requirements of the fingerprint resistant plate in the application fields such as household appliances and buildings.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a water-based environment-friendly fingerprint-resistant working solution for coil steel and a preparation method thereof, and the specific technical scheme is as follows:
the water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following components in percentage by weight: 20 to 35 percent of organic/inorganic composite modified resin, 0.1 to 1 percent of corrosion inhibitor, 0.1 to 2 percent of auxiliary agent and the balance of water.
Further, the organic/inorganic composite modified resin comprises, by weight, 25% -35% of a water-based polymer resin, 1% -3% of modified graphene oxide, 2% -6% of a silane coupling agent solution, and the balance of water.
Further, the aqueous polymer resin is composed of one or two of aqueous acrylic resin and aqueous polyurethane resin in percentage by weight.
Further, the silane coupling agent solution was composed of 20% of a silane coupling agent, 70% of anhydrous ethanol, and 10% of water.
Further, the silane coupling agent is one or two of gamma-aminopropyl triethoxysilane and gamma-methacryloxypropyl trimethoxysilane.
Furthermore, the corrosion inhibitor is water-soluble mercapto benzothiazole.
Further, the auxiliary agent is nano silicon dioxide powder.
A preparation method of an aqueous environment-friendly fingerprint-resistant working solution for coil steel comprises the following steps:
s1, preparation of organic/inorganic composite modified resin:
s1.1, preparing graphene oxide:
the preparation method comprises the steps of oxidizing expanded graphite by using an oxidizing agent, reducing redundant oxidizing agent by using a reducing agent, filtering, washing, ultrasonically dispersing, stripping and drying to obtain graphene oxide;
s1.2, modifying the surface of graphene oxide:
firstly, adding graphene oxide in the step S1.1 into ethanol, performing ultrasonic dispersion to obtain a dispersion liquid, then placing the dispersion liquid into a reaction kettle, adding gamma-aminopropyltriethoxysilane, heating and stirring for 3-5 hours, then stirring at the temperature of 60-80 ℃, continuing stirring and cooling to room temperature, and then washing with ethanol and water to neutrality to obtain modified graphene oxide; wherein the mass ratio of the graphene oxide to the gamma-aminopropyltriethoxysilane is 1: 5;
s1.3, preparation of a silane coupling agent solution:
firstly, according to the component proportion in the claim 4, mixing and stirring the silane coupling agent, the absolute ethyl alcohol and the water until the mixture is clarified to obtain a mixed solution;
s1.4, physical mixing:
adding the modified graphene oxide obtained in the steps S1.2 and S1.3 and a silane coupling agent solution into a water-based high polymer resin according to the component proportion of claim 2, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain an organic/inorganic composite modified resin;
s2, blending to prepare the water-based environment-friendly fingerprint-resistant working solution:
adding a corrosion inhibitor and an auxiliary agent into the organic/inorganic composite modified resin obtained in the step S1.4 according to the component proportion of claim 1, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain the water-based environment-friendly fingerprint-resistant working solution.
Further, the oxidizing agent consists of potassium permanganate and sodium nitrate.
Further, the reducing agent is any one of aqueous hydrogen peroxide, hydrazine hydrate and sodium borohydride.
The invention has the beneficial effects that:
according to the invention, graphene oxide is reacted with hydroxyl on a silane coupling agent to form a covalent bond to be tightly combined, so that the graphene oxide modified by silane and the aqueous polymer resin containing the silane coupling agent are more easily dispersed and combined due to the similar and compatible polarities; due to the structure of rich oxygen functional groups on the surface of the graphene oxide, the graphene oxide is easy to generate covalent bonds with hydroxyl functional groups of the water-based polymer resin, so that the bonding force between the graphene oxide and the water-based polymer resin is enhanced, the excellent physical and chemical properties of the graphene can be introduced, and the environment-friendly fingerprint-resistant working solution compounded by the graphene has better corrosion resistance, chemical resistance, electrical conductivity and other properties on the basis of the original material properties.
Drawings
FIG. 1 is a schematic view of the fingerprint-resistant working solution of the present invention forming a fingerprint-resistant coating on a metal surface;
FIG. 2 is an electron microscope image of the fingerprint-resistant working solution of the present invention forming a fingerprint-resistant coating on a metal surface.
Shown in the figure: 1. a barrier layer; 2. a metal reaction transition layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the application provides the water-based environment-friendly fingerprint-resistant working solution for the coil steel and the preparation method thereof, the graphene and the environment-friendly fingerprint-resistant agent are compounded, and the performances of corrosion resistance, chemical resistance, conductivity, processability and the like of the graphene are improved, so that the higher performance requirement of the fingerprint-resistant plate treated by the graphene in the application of the fields of household appliances, buildings and the like is met.
In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:
graphene is a graphite thin film with a single atomic layer, and the crystal lattice of the graphene is a two-dimensional honeycomb structure formed by carbon atoms; structurally, graphene is a two-dimensional crystal composed of closely packed six-membered rings of carbon atoms, has a honeycomb lattice structure of repeating periodicity, can be warped into zero-dimensional fullerene, rolled into one-dimensional Carbon Nanotubes (CNTs), or stacked into three-dimensional graphite, and thus is also considered as a basic unit constituting fullerene, CNT, and graphite. Graphene materials have many novel physical properties, including superior electrical conductivity, thermal conductivity, corrosion resistance, chemical resistance, and mechanical properties comparable to single-walled carbon nanotubes.
In view of the performance characteristics of graphene, if the graphene is compounded with a common environment-friendly fingerprint resistant agent, a composite material with more excellent comprehensive performance is expected to be prepared, and the excellent performance of the traditional fingerprint resistant agent is kept, and simultaneously, the performances of corrosion resistance, chemical resistance, conductivity and the like of the graphene are improved, so that the higher performance requirements of the fingerprint resistant plate treated by the graphene in the application of the fields of household appliances, buildings and the like are met.
The film forming mechanism of the environment-friendly fingerprint resistant agent on the metal surface is that the water-based polymer resin which is crosslinked and cured by adopting a sol-gel technology is baked and volatilized, resin latex plays a bridging role among silane particles, a continuous and compact film is gradually formed, the resin latex becomes a barrier for preventing aggressive particles from penetrating through a film layer to corrode a zinc layer, and after corrosion occurs, a corrosion product can be stabilized, and the further occurrence of reaction is prevented.
Silane is a common sol-gel system reagent, and one end of the silane can react with hydroxyl on the surface of an inorganic material (such as glass fiber, silicate, metal and oxide thereof) through a self-contained chemical functional group to generate a covalent bond; the other end can generate covalent bond with resin, so that the two materials with different properties are combined to play a role in improving the performance of the composite material. Therefore, the environment-friendly fingerprint-resistant technology adopts an inorganic-organic hybrid technology.
In addition, the resin in the environment-friendly fingerprint resistant agent generally adopts a water-based polyurethane-acrylic resin system, and different functional groups are introduced into the resin system, so that grafting crosslinking can be carried out on the resin system and silane and the like, and a continuous and compact coating is formed on the metal surface; meanwhile, a plurality of functional groups in the resin, such as amino groups, hydroxyl groups and the like, can enable the coating to have good recoatability.
According to the method, graphene oxide is reacted with hydroxyl on a silane coupling agent to form covalent bonds to be tightly combined, so that the graphene oxide modified by silane and the aqueous polymer resin containing the silane coupling agent are more easily dispersed and combined due to the similar and compatible polarities; due to the structure of rich oxygen functional groups on the surface of the graphene oxide, the graphene oxide is easy to generate covalent bonds with hydroxyl functional groups on the surface of the aqueous polymer resin, so that the bonding force between the graphene oxide and the hydroxyl functional groups is enhanced, the excellent physical and chemical properties and corrosion resistance of the graphene are introduced, and the environment-friendly fingerprint-resistant working solution compounded by the graphene has better corrosion resistance, chemical resistance, electrical conductivity and other properties on the basis of the original material properties. Firstly, starting from a graphite raw material, preparing graphene oxide, then partially reducing the graphene oxide, so that not only is the bulk structure of the graphene maintained, but also part of oxygen-containing functional groups are maintained, so that the dispersibility of the graphene is maintained, and then dispersing and mixing the graphene oxide with aqueous polymer resin to obtain the environment-friendly fingerprint resistant agent aqueous solution containing the graphene.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example one
The water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following components in percentage by weight: 20 percent of organic/inorganic composite modified resin, 0.1 percent of corrosion inhibitor, 0.1 percent of auxiliary agent and the balance of water.
The organic/inorganic composite modified resin comprises, by weight, 25% of a water-based polymer resin, 1% of modified graphene oxide, 2% of a silane coupling agent solution, and the balance of water.
The water-based polymer resin is water-based acrylic resin in percentage by weight.
The silane coupling agent solution is composed of 20% of silane coupling agent, 70% of anhydrous ethanol and 10% of water.
The silane coupling agent is gamma-aminopropyl triethoxysilane.
The corrosion inhibitor is water-soluble mercapto benzothiazole.
The auxiliary agent is nano silicon dioxide powder.
A preparation method of water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following steps:
s1, preparation of organic/inorganic composite modified resin:
s1.1, preparing graphene oxide:
the preparation method comprises the steps of oxidizing expanded graphite by using an oxidizing agent, reducing redundant oxidizing agent by using a reducing agent, filtering, washing, ultrasonically dispersing, stripping and drying to obtain graphene oxide;
s1.2, modifying the surface of graphene oxide:
firstly, adding the graphene oxide obtained in the step S1.1 into ethanol, performing ultrasonic dispersion to obtain a dispersion liquid, then placing the dispersion liquid into a reaction kettle, adding gamma-aminopropyltriethoxysilane, heating and stirring for 3 hours, keeping stirring at the temperature of 60 ℃, continuously stirring and cooling to room temperature, and then washing with ethanol and water to be neutral to obtain modified graphene oxide; wherein the mass ratio of the graphene oxide to the gamma-aminopropyltriethoxysilane is 1: 5;
s1.3, preparation of a silane coupling agent solution:
firstly, according to the component proportion, mixing and stirring a silane coupling agent, absolute ethyl alcohol and water until the mixture is clear to obtain a mixed solution;
s1.4, physical mixing:
adding water-based high polymer resin into the modified graphene oxide and silane coupling agent solution obtained in the steps S1.2 and S1.3 according to the component proportion, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain organic/inorganic composite modified resin;
s2, blending to prepare the water-based environment-friendly fingerprint-resistant working solution:
and (3) adding a corrosion inhibitor and an auxiliary agent into the organic/inorganic composite modified resin obtained in the step (S1.4) according to the component proportion, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain the water-based environment-friendly fingerprint-resistant working solution.
The oxidant consists of potassium permanganate and sodium nitrate.
The reducing agent is aqueous hydrogen peroxide.
Example two
The water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following components in percentage by weight: 27.5 percent of organic/inorganic composite modified resin, 0.55 percent of corrosion inhibitor, 1.05 percent of auxiliary agent and the balance of water.
The organic/inorganic composite modified resin comprises, by weight, 30% of a water-based polymer resin, 2% of modified graphene oxide, 4% of a silane coupling agent solution, and the balance of water.
The water-based polymer resin is water-based polyurethane resin in percentage by weight.
The silane coupling agent solution is composed of 20% of silane coupling agent, 70% of anhydrous ethanol and 10% of water.
The silane coupling agent is gamma-methacryloxypropyltrimethoxysilane.
The corrosion inhibitor is water-soluble mercapto benzothiazole.
The auxiliary agent is nano silicon dioxide powder.
A preparation method of water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following steps:
s1, preparation of organic/inorganic composite modified resin:
s1.1, preparing graphene oxide:
the preparation method comprises the steps of oxidizing expanded graphite by using an oxidizing agent, reducing redundant oxidizing agent by using a reducing agent, filtering, washing, ultrasonically dispersing, stripping and drying to obtain graphene oxide;
s1.2, modifying the surface of graphene oxide:
firstly, adding the graphene oxide obtained in the step S1.1 into ethanol, performing ultrasonic dispersion to obtain a dispersion liquid, then placing the dispersion liquid into a reaction kettle, adding gamma-aminopropyltriethoxysilane, heating and stirring for 4 hours, then stirring at the temperature of 70 ℃, continuously stirring and cooling to room temperature, and then washing with ethanol and water to be neutral to obtain modified graphene oxide; wherein the mass ratio of the graphene oxide to the gamma-aminopropyltriethoxysilane is 1: 5;
s1.3, preparation of a silane coupling agent solution:
firstly, according to the component proportion, mixing and stirring a silane coupling agent, absolute ethyl alcohol and water until the mixture is clear to obtain a mixed solution;
s1.4, physical mixing:
adding water-based high polymer resin into the modified graphene oxide and silane coupling agent solution obtained in the steps S1.2 and S1.3 according to the component proportion, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain organic/inorganic composite modified resin;
s2, blending to prepare the water-based environment-friendly fingerprint-resistant working solution:
and (3) adding a corrosion inhibitor and an auxiliary agent into the organic/inorganic composite modified resin obtained in the step (S1.4) according to the component proportion, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain the water-based environment-friendly fingerprint-resistant working solution.
The oxidant consists of potassium permanganate and sodium nitrate.
The reducing agent is hydrazine hydrate.
EXAMPLE III
The water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following components in percentage by weight: 35% of organic/inorganic composite modified resin, 1% of corrosion inhibitor, 2% of auxiliary agent and the balance of water.
The organic/inorganic composite modified resin comprises, by weight, 35% of a water-based polymer resin, 3% of modified graphene oxide, 6% of a silane coupling agent solution, and the balance of water.
The water-based polymer resin consists of water-based acrylic resin and water-based polyurethane resin in percentage by weight.
The silane coupling agent solution is composed of 20% of silane coupling agent, 70% of anhydrous ethanol and 10% of water.
The silane coupling agent consists of gamma-aminopropyl triethoxysilane and gamma-methacryloxypropyl trimethoxysilane.
The corrosion inhibitor is water-soluble mercapto benzothiazole.
The auxiliary agent is nano silicon dioxide powder.
A preparation method of water-based environment-friendly fingerprint-resistant working solution for coil steel comprises the following steps:
s1, preparation of organic/inorganic composite modified resin:
s1.1, preparing graphene oxide:
the preparation method comprises the steps of oxidizing expanded graphite by using an oxidizing agent, reducing redundant oxidizing agent by using a reducing agent, filtering, washing, ultrasonically dispersing, stripping and drying to obtain graphene oxide;
s1.2, modifying the surface of graphene oxide:
firstly, adding the graphene oxide obtained in the step S1.1 into ethanol, performing ultrasonic dispersion to obtain a dispersion liquid, then placing the dispersion liquid into a reaction kettle, adding gamma-aminopropyltriethoxysilane, heating and stirring for 5 hours, keeping stirring at the temperature of 80 ℃, continuously stirring and cooling to room temperature, and then washing with ethanol and water to be neutral to obtain modified graphene oxide; wherein the mass ratio of the graphene oxide to the gamma-aminopropyltriethoxysilane is 1: 5;
s1.3, preparation of a silane coupling agent solution:
firstly, according to the component proportion, mixing and stirring a silane coupling agent, absolute ethyl alcohol and water until the mixture is clear to obtain a mixed solution;
s1.4, physical mixing:
adding water-based high polymer resin into the modified graphene oxide and silane coupling agent solution obtained in the steps S1.2 and S1.3 according to the component proportion, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain organic/inorganic composite modified resin;
s2, blending to prepare the water-based environment-friendly fingerprint-resistant working solution:
and (3) adding a corrosion inhibitor and an auxiliary agent into the organic/inorganic composite modified resin obtained in the step (S1.4) according to the component proportion, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain the water-based environment-friendly fingerprint-resistant working solution.
The oxidant consists of potassium permanganate and sodium nitrate.
The reducing agent is sodium borohydride.
The neutral salt spray test is one of the most important tests for coatings, and is an important index for directly evaluating the corrosion resistance of the coatings. And (3) placing the metal sample plate with the wrapped edge in a sample plate groove of a salt spray box, and performing a neutral salt spray test according to GB/T10125-2012 salt spray test for artificial atmosphere corrosion test, wherein the salt spray program is set to ASTM B117. After a certain test time, the salt spray performance of the coating is evaluated by observing the corrosion area of the coating. In the test, the addition amount of the water-based environment-friendly fingerprint-resistant working solution is 0.5%, and the test result shows the neutral salt spray test data shown in the following table 1:
TABLE 1
As can be seen from the above table 1, the neutral salt spray test proves that the corrosion resistance of the metal sample plate can be remarkably improved by adding 0.5% of the water-based environment-friendly fingerprint-resistant working solution.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The water-based environment-friendly fingerprint-resistant working solution for coil steel is characterized by comprising the following components in percentage by weight: 20 to 35 percent of organic/inorganic composite modified resin, 0.1 to 1 percent of corrosion inhibitor, 0.1 to 2 percent of auxiliary agent and the balance of water.
2. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 1, wherein the organic/inorganic composite modified resin comprises 25-35 wt% of aqueous polymer resin, 1-3 wt% of modified graphene oxide, 2-6 wt% of silane coupling agent solution, and the balance of water.
3. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 2, wherein the aqueous polymer resin is one or two of aqueous acrylic resin and aqueous polyurethane resin in percentage by weight.
4. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 2, wherein the silane coupling agent solution is composed of 20% of silane coupling agent, 70% of anhydrous ethanol and 10% of water.
5. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 4, wherein the silane coupling agent is one or two of gamma-aminopropyltriethoxysilane and gamma-methacryloxypropyltrimethoxysilane.
6. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 1, wherein the corrosion inhibitor is water-soluble mercapto benzothiazole.
7. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 1, wherein the auxiliary agent is nano silicon dioxide powder.
8. The preparation method of the water-based environment-friendly fingerprint-resistant working solution for coil steel is characterized by comprising the following steps of:
s1, preparation of organic/inorganic composite modified resin:
s1.1, preparing graphene oxide:
the preparation method comprises the steps of oxidizing expanded graphite by using an oxidizing agent, reducing redundant oxidizing agent by using a reducing agent, filtering, washing, ultrasonically dispersing, stripping and drying to obtain graphene oxide;
s1.2, modifying the surface of graphene oxide:
firstly, adding graphene oxide in the step S1.1 into ethanol, performing ultrasonic dispersion to obtain a dispersion liquid, then placing the dispersion liquid into a reaction kettle, adding gamma-aminopropyltriethoxysilane, heating and stirring for 3-5 hours, then stirring at the temperature of 60-80 ℃, continuing stirring and cooling to room temperature, and then washing with ethanol and water to neutrality to obtain modified graphene oxide; wherein the mass ratio of the graphene oxide to the gamma-aminopropyltriethoxysilane is 1: 5;
s1.3, preparation of a silane coupling agent solution:
firstly, according to the component proportion in the claim 4, mixing and stirring the silane coupling agent, the absolute ethyl alcohol and the water until the mixture is clarified to obtain a mixed solution;
s1.4, physical mixing:
adding the modified graphene oxide obtained in the steps S1.2 and S1.3 and a silane coupling agent solution into a water-based high polymer resin according to the component proportion of claim 2, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain an organic/inorganic composite modified resin;
s2, blending to prepare the water-based environment-friendly fingerprint-resistant working solution:
adding a corrosion inhibitor and an auxiliary agent into the organic/inorganic composite modified resin obtained in the step S1.4 according to the component proportion of claim 1, adding water at normal temperature for ultrasonic dispersion, and mixing and stirring uniformly to obtain the water-based environment-friendly fingerprint-resistant working solution.
9. The aqueous environment-friendly fingerprint-resistant working solution for coil steel as claimed in claim 8, wherein the oxidant consists of potassium permanganate and sodium nitrate.
10. The aqueous environment-friendly fingerprint-resistant working solution for coil steel according to claim 8, wherein the reducing agent is any one of aqueous hydrogen peroxide, hydrazine hydrate and sodium borohydride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010856926.6A CN112111202A (en) | 2020-08-24 | 2020-08-24 | Water-based environment-friendly fingerprint-resistant working solution for coil steel and preparation method thereof |
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| CN113831825A (en) * | 2021-08-23 | 2021-12-24 | 武汉科技大学 | Self-repairing waterborne polyurethane anticorrosive paint and preparation method thereof |
| CN117050570A (en) * | 2023-08-31 | 2023-11-14 | 江西省科学院应用化学研究所 | Star-shaped organosiloxane modified graphene filler and preparation method of reinforced anticorrosive paint thereof |
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