CN115678409A - Anticorrosive antifouling antistatic coating and preparation method thereof - Google Patents
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Abstract
The invention belongs to the technical field of coatings, and particularly relates to an anticorrosive antifouling antistatic coating and a preparation method thereof. The anticorrosive antifouling antistatic coating is mainly prepared from a component A and a component B, wherein the component A comprises the following components in parts by weight: 52 to 56 parts of acrylic resin, 5 to 8 parts of hydrophobic restoring agent, 12 to 15 parts of dimethylbenzene, 15 to 17 parts of butyl acetate, 0.5 to 1 part of wetting dispersant, 0.15 to 0.25 part of defoaming agent, 0.25 to 0.35 part of flatting agent, 7 to 8 parts of white slurry, 0.15 to 0.25 part of anti-settling agent, 3 to 5 parts of modified graphene oxide and 1 to 3 parts of nano titanium dioxide; the component B comprises the following components in parts by weight: 45-55 parts of curing agent and 40-50 parts of butyl acetate. The anticorrosive antifouling antistatic coating prepared by the invention has the characteristics of excellent hydrophobic recovery property, good antistatic effect, strong anticorrosive property and the like, and the preparation process is simple.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to an anticorrosive antifouling antistatic coating and a preparation method thereof.
Background
In recent years, serious fire and explosion accidents caused by static electricity have occurred in China petrochemical enterprises, if a large amount of static electricity is accumulated on an insulating material, equipment cannot be used, for example, problems such as distortion of precision instruments, scrapping of electronic components, short circuit and the like are caused, so that potential safety hazards are caused, and static electricity elimination in many fields is limited by the appearance, the operating condition and the like of the equipment, so that the static electricity elimination is difficult to realize by means of additional equipment and the like. Thus, the prior art has often reduced the build-up of static electricity by applying antistatic coatings, typically having a surface resistivity of 10 6 ～10 9 Between omega, not only can quickly conduct current and eliminate static charge, but also can be widely applied due to simple process, convenient construction and low cost, but the antistatic coating applied on the market has common anticorrosion and antifouling performance, and the antistatic performance of the anticorrosion and antifouling coating cannot be met. Therefore, the development of multifunctional paint with antistatic, anticorrosion and antifouling properties has wide market application prospect.
Disclosure of Invention
The invention aims to provide an anticorrosive antifouling antistatic coating and a preparation method thereof. The anticorrosive antifouling antistatic coating has the advantages of excellent hydrophobic recovery, good antistatic effect, strong anticorrosive performance and the like, and can effectively overcome the defects of poor anticorrosive performance, short service life and the like of the antistatic coating produced by the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: an anticorrosive antifouling antistatic coating is mainly prepared from a component A and a component B, wherein the component A comprises the following components in parts by weight:
52 to 56 portions of acrylic resin, 5 to 8 portions of hydrophobic restoring agent, 12 to 15 portions of dimethylbenzene, 15 to 17 portions of butyl acetate, 0.5 to 1 portion of wetting dispersant, 0.15 to 0.25 portion of antifoaming agent, 0.25 to 0.35 portion of flatting agent, 7 to 8 portions of white slurry, 0.15 to 0.25 portion of anti-settling agent, 3 to 5 portions of modified graphene oxide and 1 to 3 portions of nano titanium dioxide;
the component B comprises the following components in parts by weight: 45-55 parts of curing agent and 40-50 parts of butyl acetate.
Preferably, the component A comprises the following components in parts by weight:
54 parts of acrylic resin, 6 parts of hydrophobic restoring agent, 13 parts of dimethylbenzene, 16 parts of butyl acetate, 0.8 part of wetting dispersant, 0.20 part of defoaming agent, 0.30 part of flatting agent, 7.5 parts of white slurry, 0.2 part of anti-settling agent, 4 parts of modified graphene oxide and 2 parts of nano titanium dioxide;
the component B comprises the following components in parts by weight: 50 parts of curing agent and 45 parts of butyl acetate.
Preferably, the acrylic resin is a hydroxy acrylic resin.
Preferably, the mass ratio of the component A to the component B is 100: (10 to 12).
Preferably, the preparation method of the modified graphene oxide comprises the following steps:
adding graphene oxide into a mixed solution of ethyl orthosilicate and aminopropyltriethoxysilane, stirring, performing ultrasonic treatment, adjusting the pH value of the solution to 4.0-4.5, standing, adjusting the pH value of the solution to 8.0-8.5, performing gelation in a water bath, and finally performing freeze drying on a product to obtain the modified graphene oxide.
Preferably, the anti-corrosion, anti-fouling and anti-static coating at least comprises one of the following items (1) to (7):
(1) The mass ratio of the ethyl orthosilicate to the aminopropyltriethoxysilane is (5-7): (3-5);
(2) The stirring speed is 500-600r/min, and the time is 1-3 h;
(3) The ultrasonic time is 1-2 h;
(4) The standing time is 24-48 h;
(5) The solvent used for adjusting the pH value of the solution to 4.0-4.5 is glacial acetic acid;
(6) The solvent used for adjusting the pH value of the solution to 8.0-8.5 is a NaOH solution with the mass fraction of 2.5 wt.%;
(7) The temperature of the water bath is 60-70 ℃.
Preferably, the anti-corrosion, anti-fouling and antistatic coating at least comprises one of the following items (1) to (6):
(1) The hydrophobic restoring agent comprises polydimethylsiloxane containing hydroxyl functional groups;
(2) The wetting dispersant comprises a phosphate ester;
(3) The defoamer comprises silicone;
(4) The leveling agent comprises polyether modified polydimethylsiloxane;
(5) The anti-settling agent comprises fumed silica;
(6) The curing agent includes an isocyanate curing agent.
The preparation method of the anticorrosive antifouling antistatic coating comprises the following steps:
s1, preparation of a component A:
s11, weighing xylene and a hydrophobic restoration agent, stirring and mixing, adding butyl acetate, continuously stirring, sequentially adding a wetting dispersant, a defoaming agent and a leveling agent, and stirring;
s12, weighing acrylic resin, adding the acrylic resin into the solution obtained in the step S11, stirring and dispersing, adding the modified graphene oxide, stirring, adding the nano titanium dioxide, and stirring to form uniform dispersion liquid;
s13, weighing white slurry, adding the white slurry into the dispersion liquid obtained in the step S12, stirring, adding the anti-settling agent, continuously stirring, and filtering to obtain a component A;
s2, preparing a component B: weighing butyl acetate and a curing agent, and stirring and mixing to prepare a component B;
and S3, when the coating is used, uniformly mixing the component A prepared in the step S1 and the component B prepared in the step S2 to obtain the anticorrosive, antifouling and antistatic coating.
Preferably, the production method includes at least one of the following items (1) to (3):
(1) The rotation speed of stirring and mixing in the step S11 is 500-600r/min, and the time is 8-10 min;
(2) The continuous stirring time in the step S11 is 12-15 min;
(3) In the step S11, the stirring speed is 600-800r/min, and the stirring time is 15-20 min.
Preferably, the production method includes at least one of the following items (1) to (2):
(1) The stirring and dispersing speed in the step S12 is 1500-1700r/min, and the time is 25-35 min;
(2) The stirring time in the step S12 is 20-25 min.
Preferably, the production method includes at least one of the following items (1) to (3):
(1) The stirring time in the step S13 is 30-35 min; the continuous stirring time is 20-25 min;
(2) The filter screen selected in the step S13 is 80-100 meshes;
(3) The rotation speed of stirring and mixing in the step S2 is 600-700r/min, and the time is 25-30 min.
According to the invention, modified graphene oxide is selected as a raw material component, the chemical structure of the chemically modified graphene oxide surface is changed, and the chemically modified graphene oxide surface reacts with acrylic resin to form a covalent bond, so that the problems of graphene accumulation, aggregation and the like are solved, the stability and the dispersibility of the graphene oxide in the acrylic resin are improved, the modified graphene oxide dispersed in the acrylic resin can better establish a conductive network structure, and the antistatic property of the coating is obviously improved. Meanwhile, the surface of the modified graphene oxide contains various oxygen-containing groups, and the oxygen-containing groups can react with carboxyl in acrylic resin, so that the reaction of alkali molecules is weakened, and the corrosion resistance of acrylic acid is further enhanced. Meanwhile, the selected hydrophobic restoring agent has a hydroxyl group on a side chain, so that organic small molecules can be released in the process of crosslinking and curing with components such as acrylic resin and the like, and the organic small molecules are diffused to the surface of the coating, so that the coating has more excellent hydrophobicity and durability, and the hydrophobic restoring function is realized.
In addition, the nano titanium dioxide component is added, and the nano titanium dioxide has the property of small particle size, so that the filling effect on the coating gap can be improved, the shielding effect of the coating on a corrosive medium can be improved, and the corrosion resistance of the coating can be further improved; on the other hand, the nano titanium dioxide has good photocatalytic performance and gives the coating self-cleaning capability under the action of ultraviolet light and oxygen. In addition, the addition of the nano titanium dioxide lightens the color of the paint containing the carbon-based conductive filler, and can meet the requirements of users on the color of the paint.
Compared with the prior art, the invention has the following beneficial effects:
the anticorrosive antifouling antistatic coating prepared by the invention has the characteristics of excellent hydrophobic recovery property, good antistatic effect, strong anticorrosive property and the like, is simple in preparation process, can be used for a long time without recoating, and reduces the maintenance cost.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the examples and comparative examples, the experimental methods used were conventional unless otherwise specified, and the materials, reagents and the like used were commercially available unless otherwise specified.
The raw materials used in the examples and comparative examples are illustrated in Table 1.
TABLE 1
Example 1 anti-corrosive, anti-fouling and antistatic coating and preparation method thereof
The components are as follows: a component A:
52 parts of acrylic resin, 5 parts of hydrophobic restoring agent, 12 parts of dimethylbenzene, 15 parts of butyl acetate, 0.5 part of wetting dispersant, 0.15 part of defoaming agent, 0.25 part of flatting agent, 7 parts of white slurry, 0.15 part of anti-settling agent, 3 parts of modified graphene oxide and 1 part of nano titanium dioxide;
b, component B: 45 parts of curing agent and 40 parts of butyl acetate.
Preparing modified graphene oxide: adding graphene oxide into a mixed solution (5, wt.% and wt.%) of ethyl orthosilicate and aminopropyltriethoxysilane, stirring for 1h at the rotation speed of 500r/min, then carrying out ultrasonic treatment for 1h, then adjusting the pH value of the solution to 4.0 by using glacial acetic acid, standing for 24h for later use, adjusting the pH value to 8.0 by using a NaOH solution with the mass fraction of 2.5wt.%, carrying out gelation under the condition of 60 ℃ water bath, and finally carrying out freeze drying on a product to obtain the modified graphene oxide.
The preparation method comprises the following steps:
s1, preparing a component A:
s11, weighing dimethylbenzene and a hydrophobic restoring agent, stirring at the rotating speed of 500r/min for 8min, then adding butyl acetate, continuously stirring for 12min, sequentially adding a wetting dispersant, a defoaming agent and a flatting agent, and stirring at the rotating speed of 600r/min for 15min;
s12, weighing acrylic resin, adding the acrylic resin into the solution obtained in the step S11, stirring and dispersing for 25min at 1500r/min, adding the modified graphene oxide, stirring for 20min, adding the nano titanium dioxide, and stirring for 20min to form uniform dispersion liquid;
s13, weighing white slurry, adding the white slurry into the dispersion liquid obtained in the step S12, stirring for 30min, adding the anti-settling agent, continuing stirring for 20min, and filtering by using a 80-mesh filter screen to obtain a component A;
s2, preparing a component B: weighing butyl acetate and a curing agent, and stirring at the rotating speed of 600r/min for 25min to prepare a component B;
s3, when in use, mixing the component A prepared in the step S1 and the component B prepared in the step S2 according to the mass ratio of 100:10 to obtain the anticorrosive antifouling antistatic coating.
Example 2, an anticorrosive, antifouling and antistatic coating and a preparation method thereof
The components are as follows: a component A:
56 parts of acrylic resin, 8 parts of hydrophobic restoring agent, 15 parts of dimethylbenzene, 17 parts of butyl acetate, 1 part of wetting dispersant, 0.25 part of defoaming agent, 0.35 part of flatting agent, 8 parts of white slurry, 0.25 part of anti-settling agent, 5 parts of modified graphene oxide and 3 parts of nano titanium dioxide;
b, component B: 55 parts of curing agent and 50 parts of butyl acetate.
Preparing modified graphene oxide: adding graphene oxide into a mixed solution (6, wt.%: wt.%) of tetraethoxysilane and aminopropyltriethoxysilane, stirring for 3h at the rotation speed of 600r/min, then carrying out ultrasound for 2h, then adjusting the pH value of the solution to 4.5 by using glacial acetic acid, standing for 48h for later use, adjusting the pH value to 8.5 by using a NaOH solution with the mass fraction of 2.5wt.%, carrying out gelation under the condition of 70 ℃ water bath, and finally carrying out freeze drying on the product to prepare the modified graphene oxide.
The preparation method comprises the following steps:
s1, preparation of a component A:
s11, weighing xylene and a hydrophobic restoring agent, stirring for 10min at the rotating speed of 600r/min, adding butyl acetate, continuously stirring for 15min, sequentially adding a wetting dispersant, a defoaming agent and a leveling agent, and stirring for 20min at the rotating speed of 800 r/min;
s12, weighing acrylic resin, adding the acrylic resin into the solution obtained in the step S11, stirring and dispersing at 1700r/min for 35min, adding the modified graphene oxide, stirring for 25min, adding the nano titanium dioxide, and stirring for 25min to form uniform dispersion liquid;
s13, weighing white slurry, adding the white slurry into the dispersion liquid obtained in the step S12, stirring for 35min, adding the anti-settling agent, continuously stirring for 25min, and filtering by using a 100-mesh filter screen to obtain a component A;
s2, preparing a component B: weighing butyl acetate and curing agent, and stirring for 30min at the rotation speed of 700r/min to obtain component B;
s3, when in use, mixing the component A prepared in the step S1 and the component B prepared in the step S2 according to the mass ratio of 100:12, and uniformly mixing to obtain the anticorrosive antifouling antistatic coating.
Example 3, an anticorrosive, antifouling and antistatic coating and a preparation method thereof
The components are as follows: a component A:
54 parts of acrylic resin, 6 parts of hydrophobic restoring agent, 13 parts of dimethylbenzene, 16 parts of butyl acetate, 0.8 part of wetting dispersant, 0.20 part of defoaming agent, 0.30 part of flatting agent, 7.5 parts of white slurry, 0.2 part of anti-settling agent, 4 parts of modified graphene oxide and 2 parts of nano titanium dioxide;
b component: 50 parts of curing agent and 45 parts of butyl acetate.
Preparing modified graphene oxide: adding graphene oxide into a mixed solution (7, 3 wt.%: wt.%) of tetraethoxysilane and aminopropyltriethoxysilane, stirring for 2h at the rotation speed of 600r/min, then carrying out ultrasonic treatment for 2h, then adjusting the pH value of the solution to 4.5 by using glacial acetic acid, standing for 48h for later use, adjusting the pH value to 8.5 by using a NaOH solution with the mass fraction of 2.5wt.%, carrying out gelation under the condition of 65 ℃ water bath, and finally carrying out freeze drying on the product to prepare the modified graphene oxide.
The preparation method comprises the following steps:
s1, preparing a component A:
s11, weighing dimethylbenzene and a hydrophobic restoring agent, stirring at the rotating speed of 600r/min for 9min, then adding butyl acetate, continuously stirring for 13min, sequentially adding a wetting dispersant, a defoaming agent and a flatting agent, and stirring at the rotating speed of 700r/min for 18min;
s12, weighing acrylic resin, adding the acrylic resin into the solution obtained in the step S11, stirring and dispersing for 30min at 1600r/min, adding the modified graphene oxide, stirring for 25min, adding the nano titanium dioxide, and stirring for 25min to form uniform dispersion liquid;
s13, weighing white slurry, adding the white slurry into the dispersion liquid obtained in the step S12, stirring for 35min, adding the anti-settling agent, continuously stirring for 25min, and filtering by using a 90-mesh filter screen to obtain a component A;
s2, preparing a component B: weighing butyl acetate and a curing agent, and stirring for 30min at the rotating speed of 600r/min to prepare a component B;
s3, when in use, mixing the component A prepared in the step S1 and the component B prepared in the step S2 according to the mass ratio of 100:11, and uniformly mixing to obtain the anticorrosive antifouling antistatic coating.
Comparative example 1
Compared with example 3, the comparative example is different only in that the same amount of graphene oxide is used to replace the modified graphene oxide.
The preparation method refers to example 3.
Comparative example 2
The comparative example differs from example 3 only in that no hydrophobic restoration agent was added.
The preparation method refers to example 3.
Comparative example 3
The comparative example differs from example 3 only in that the same amount of silicone water repellent was used in place of the water repellent recovery agent.
The preparation method refers to example 3.
Comparative example 4
The comparative example differs from example 3 only in that the acrylic resin is replaced by an equal amount of epoxy resin.
The preparation method refers to example 3.
Comparative example 5
Compared with example 3, the comparative example only differs in that the same amount of nano zinc oxide is used to replace nano titanium dioxide.
The preparation method refers to example 3.
Test example I, hydrophobic Property test
The coatings prepared in examples 1 to 3 and comparative examples 1 to 5 were uniformly coated on a glass substrate, and left at room temperature for 48 hours until they were air-dried and cured, and then the surface static contact angle was measured to analyze the hydrophobic property of the coating, and the test data are shown in table 1. As can be seen from Table 1, the contact angles of the examples 1 to 3 are large, the hydrophobicity is strong, and the anticorrosive, antifouling and antistatic coating prepared by the method has excellent hydrophobic property.
TABLE 1 static contact angle of DI water on the surface of each sample
| Group of | Static contact Angle (°) |
| Example 1 | 105 |
| Example 2 | 105 |
| Example 3 | 107 |
| Comparative example 1 | 76 |
| Comparative example 2 | 80 |
| Comparative example 3 | 81 |
| Comparative example 4 | 77 |
| Comparative example 5 | 85 |
Test example II measurement of antistatic Properties
The surface resistivity of the coating sample is determined by placing two specific electrodes on the surface of the coating sample and measuring the ratio of the voltage to the current, and the surface resistivity can provide information about the dissipation capacity of the accumulated charges on the surface of the material or estimate the amplitude of the discharge current in the electrostatic discharge process.
The coatings prepared in examples 1 to 3 and comparative examples 1 to 5 were uniformly coated on a glass substrate, left at room temperature for 48 hours until they were air-dried and cured, and then the surface resistivity of the coatings was measured, the results of which are shown in table 2.
TABLE 2 surface resistivity results for each sample
As can be seen from Table 2, the anti-corrosive, anti-fouling and anti-static coating prepared by the embodiment of the invention has a small surface resistivity, thereby showing excellent anti-static performance.
The graphene oxide added in the comparative example 1 is not modified, and a continuous conductive network path cannot be formed in a formula system, so that the surface resistivity is high, and the antistatic performance is poor; in comparative examples 2 to 3, no hydrophobic restoring agent was added or a hydrophobic agent having no hydroxyl group was used instead of the polydimethylsiloxane component having a hydroxyl functional group selected in the examples, and the resulting coating had a higher surface resistivity; the paint prepared by replacing the acrylic resin with the epoxy resin in the comparative example 4 and replacing the nano titanium dioxide component with the nano zinc oxide in the comparative example 5 has higher surface resistivity than the paint prepared by the embodiment.
Test example III Corrosion resistance test
The coatings prepared in examples 1 to 3 and comparative examples 1 to 5 were uniformly coated on a glass substrate, left to stand at room temperature for 48 hours until they were air-dried and cured, and then the respective sample coatings were immersed in a 12wt.% NaCl solution, and subjected to electrochemical alternating current impedance spectroscopy (EIS) testing using a CS310 electrochemical workstation manufactured by coster, and the results of the testing of the impedance values of the coatings at different immersion times are shown in table 3.
TABLE 3 coating resistance values for different immersion times for each sample
From the experimental data in table 3, it can be known that the anti-corrosion, anti-fouling and anti-static coating prepared in the embodiment of the invention has a high impedance value, and can be maintained at 7.1 × 10 7 ～8.9×10 7 Omega, and can not only be corroded until day 60, but also can be corroded until day 65 in the longest time in example 3, and has excellent corrosion resistance.
The graphene oxide added in the comparative example 1 is not modified, so that the prepared coating has poor corrosion resistance, and is corroded after being soaked for 50 days; comparative examples 2 to 3 in which no hydrophobic restoring agent was added or a hydrophobic agent having no hydroxyl group was used instead of the polydimethylsiloxane component having a hydroxyl functional group selected in the examples, the obtained coating had an initial coating resistance value lower than that of the examples and had poor corrosion resistance, and corrosion occurred on the 40 th day and the 30 th day, respectively; the paints prepared by replacing the acrylic resin with the epoxy resin in comparative example 4 and replacing the nano titanium dioxide component with the nano zinc oxide in comparative example 5 all had lower initial coating resistance values than the examples and all suffered corrosion on day 40.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. The anticorrosive antifouling antistatic coating is characterized by being mainly prepared from a component A and a component B, wherein the component A comprises the following components in parts by weight:
52 to 56 portions of acrylic resin, 5 to 8 portions of hydrophobic restoring agent, 12 to 15 portions of dimethylbenzene, 15 to 17 portions of butyl acetate, 0.5 to 1 portion of wetting dispersant, 0.15 to 0.25 portion of antifoaming agent, 0.25 to 0.35 portion of flatting agent, 7 to 8 portions of white slurry, 0.15 to 0.25 portion of anti-settling agent, 3 to 5 portions of modified graphene oxide and 1 to 3 portions of nano titanium dioxide;
the component B comprises the following components in parts by weight: 45-55 parts of curing agent and 40-50 parts of butyl acetate.
2. The anticorrosive antifouling antistatic coating as claimed in claim 1, wherein the component A comprises the following components in parts by weight:
54 parts of acrylic resin, 6 parts of hydrophobic restoring agent, 13 parts of dimethylbenzene, 16 parts of butyl acetate, 0.8 part of wetting dispersant, 0.20 part of defoaming agent, 0.30 part of flatting agent, 7.5 parts of white slurry, 0.2 part of anti-settling agent, 4 parts of modified graphene oxide and 2 parts of nano titanium dioxide;
the component B comprises the following components in parts by weight: 50 parts of curing agent and 45 parts of butyl acetate.
3. The anticorrosive antifouling antistatic coating as claimed in claim 1, wherein the mass ratio of the component A to the component B is 100: (10 to 12).
4. The anticorrosive antifouling antistatic coating as claimed in claim 1, wherein the preparation method of the modified graphene oxide comprises the following steps:
adding graphene oxide into a mixed solution of tetraethoxysilane and aminopropyltriethoxysilane, stirring, performing ultrasonic treatment, adjusting the pH value of the solution to 4.0-4.5, standing, adjusting the pH value of the solution to 8.0-8.5, performing gelation in a water bath, and finally performing freeze drying on a product to obtain the modified graphene oxide.
5. The anticorrosive, antifouling and antistatic coating material as claimed in claim 4, comprising at least one of the following (1) to (7):
(1) The mass ratio of the ethyl orthosilicate to the aminopropyltriethoxysilane is (5-7): (3-5);
(2) The stirring speed is 500-600r/min, and the stirring time is 1-3 h;
(3) The ultrasonic time is 1-2 h;
(4) The standing time is 24-48 h;
(5) The solvent used for adjusting the pH value of the solution to 4.0-4.5 is glacial acetic acid;
(6) The solvent used for adjusting the pH value of the solution to 8.0-8.5 is a NaOH solution with the mass fraction of 2.5 wt.%;
(7) The temperature of the water bath is 60-70 ℃.
6. The anticorrosive, antifouling and antistatic coating material as claimed in claim 1, comprising at least one of the following (1) to (6):
(1) The hydrophobic restoring agent comprises polydimethylsiloxane containing hydroxyl functional groups;
(2) The wetting and dispersing agent comprises phosphate ester;
(3) The defoamer comprises silicone;
(4) The leveling agent comprises polyether modified polydimethylsiloxane;
(5) The anti-settling agent comprises fumed silica;
(6) The curing agent includes an isocyanate curing agent.
7. A method for preparing the anticorrosive, antifouling and antistatic coating as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
s1, preparing a component A:
s11, weighing xylene and a hydrophobic restoring agent, stirring and mixing, adding butyl acetate, continuously stirring, sequentially adding a wetting dispersant, a defoaming agent and a flatting agent, and stirring;
s12, weighing acrylic resin, adding the acrylic resin into the solution obtained in the step S11, stirring and dispersing, adding the modified graphene oxide, stirring, adding the nano titanium dioxide, and stirring to form uniform dispersion liquid;
s13, weighing white slurry, adding the white slurry into the dispersion liquid obtained in the step S12, stirring, adding the anti-settling agent, continuing stirring, and filtering to obtain a component A;
s2, preparing a component B: weighing butyl acetate and a curing agent, and stirring and mixing to obtain a component B;
and S3, when the coating is used, uniformly mixing the component A prepared in the step S1 and the component B prepared in the step S2 to obtain the anticorrosive, antifouling and antistatic coating.
8. The method according to claim 7, comprising at least one of the following items (1) to (3):
(1) The rotation speed of stirring and mixing in the step S11 is 500-600r/min, and the time is 8-10 min;
(2) The continuous stirring time in the step S11 is 12-15 min;
(3) In the step S11, the stirring speed is 600-800r/min, and the stirring time is 15-20 min.
9. The method according to claim 7, comprising at least one of the following items (1) to (2):
(1) The stirring and dispersing speed in the step S12 is 1500-1700r/min, and the time is 25-35 min;
(2) The stirring time in the step S12 is 20-25 min.
10. The method according to claim 7, comprising at least one of the following (1) to (3):
(1) The stirring time in the step S13 is 30-35 min; the continuous stirring time is 20-25 min;
(2) The filter screen selected in the step S13 is 80-100 meshes;
(3) The rotation speed of stirring and mixing in the step S2 is 600-700r/min, and the time is 25-30 min.
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| CN116855149A (en) * | 2023-06-16 | 2023-10-10 | 青岛理工大学 | Self-cleaning coating capable of actively absorbing dust and removing haze, preparation method and application |
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| CN116855149B (en) * | 2023-06-16 | 2024-01-05 | 青岛理工大学 | Self-cleaning coating capable of actively absorbing dust and removing haze, preparation method and application |
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