Disclosure of Invention
The invention aims to provide a wear-resistant anticorrosive paint, the prepared paint has corrosion resistance and wear resistance, and the invention also provides a preparation method of the wear-resistant anticorrosive paint.
The wear-resistant anticorrosive paint comprises, by weight, 30-32 parts of quaternary fluorocarbon resin, 10-12 parts of hydroxyl-terminated perfluoropolyether resin, 13-15 parts of hydrogenated bisphenol A epoxy resin, 3-5 parts of poly (perfluoromethyl isopropyl ether), 0.05 part of di-n-butyltin dilaurate, 10-10.5 parts of dimethyl carbonate, 3-3.5 parts of methyl isobutyl ketone, 15-17 parts of a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker, 0.2-0.4 part of trifluoropropyl methyl silicone oil and 0.8-1.0 part of polyamide wax, and B is hexamethylene diisocyanate trimer.
The preparation method of the quaternary fluorocarbon resin comprises the following steps of firstly vacuumizing a high-pressure reaction kettle, introducing argon gas, keeping the high-pressure reaction kettle in an anhydrous and anaerobic environment, then controlling the pressure of the high-pressure reaction kettle to be 1.5MPa, firstly adding a solvent which is a mixture of 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether and dimethylbenzene, then adding 1-octene-3-alcohol acetate, 4-hydroxybutyl vinyl ether, itaconic acid and azodiisobutyronitrile, then introducing trifluoro vinyl chloride gas into the high-pressure reaction kettle, reacting for 7 hours at 73-75 ℃, cooling the reaction kettle to room temperature, depressurizing and discharging unreacted trifluoro vinyl chloride gas, precipitating the obtained liquid by adopting ethanol, filtering, and performing Soxhlet extraction and drying to obtain the quaternary fluorocarbon resin.
In the preparation method of the quaternary fluorocarbon resin, the molar ratio of the chlorotrifluoroethylene to the 4-hydroxybutyl vinyl ether to the itaconic acid to the 1-octene-3-alcohol acetate is 50:30:10:10.
The mass of the azodiisobutyronitrile in the preparation method of the quaternary fluorocarbon resin accounts for 0.7 percent of the sum of the mass of the chlorotrifluoroethylene, the 4-hydroxybutyl vinyl ether, the itaconic acid and the 1-octene-3-alcohol acetate.
The solvent volume in the preparation method of the quaternary fluorocarbon resin accounts for 60 percent of the volume of the solvent including 4-hydroxybutyl vinyl ether, itaconic acid, 1-octene-3-alcohol acetate, azodiisobutyronitrile and the like.
In the preparation method of the quaternary fluorocarbon resin, the volume ratio of the 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether to the dimethylbenzene is 3:1.
The manufacturer of the hydroxyl-terminated perfluoropolyether resin is Kaimei chemical technology (Nantong) Co., ltd, the model is FB-800, the fluorine content is 42%, the functionality is 2, and the viscosity at 25 ℃ is 600mPa.s.
The preparation method of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker comprises the following steps of mixing ethanol and deionized water to prepare a mixed solution, adding a KH-550 silane coupling agent, stirring for 1.0h at a rotating speed of 600r/min, adding the mixture of the sillimanite powder, the nano chromium diboride and the basic magnesium sulfate whisker, shearing for 50min at a high speed, reacting for 3h at 55 ℃, vacuum-filtering, and finally drying under a vacuum condition to prepare the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
Wherein the volume ratio of KH-550 silane coupling agent, ethanol and deionized water is 5:18:2.
The mass of KH-550 silane coupling agent is 2.0% of the sum of the mass of sillimanite powder, nanometer chromium diboride and basic magnesium sulfate whisker.
The mass ratio of the sillimanite powder to the nano chromium diboride to the basic magnesium sulfate whisker is 3:0.9-1.1:0.8-1.0.
The vacuum drying temperature is 70 ℃ and the vacuum drying time is 3 hours in the preparation process of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
The preparation method of the wear-resistant anticorrosive paint provided by the invention comprises the following steps:
(1) Firstly, uniformly mixing hydrogenated bisphenol A epoxy resin, dimethyl carbonate and methyl isobutyl ketone, then adding quaternary fluorocarbon resin, hydroxyl-terminated perfluoropolyether resin and poly-perfluoromethyl isopropyl ether for blending, then adding a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker for high-speed dispersion for 23-25min, adding polyamide wax and di-n-butyltin dilaurate for mixing for 1.5h, and finally adding trifluoropropyl methyl silicone oil for stirring for 3-5min to prepare a component A;
(2) And uniformly mixing the component A and the component B according to the weight ratio of 10:1 to prepare the wear-resistant anticorrosive paint.
Wherein the stirring rotating speed of the step (1) is 700r/min when the component A is prepared.
In the step (2), the stirring speed is 800r/min, the stirring time is 25-27min, and the stirring temperature is 25 ℃.
And (3) spraying the wear-resistant anticorrosive paint in the step (2), and then curing for 36 hours at room temperature.
Compared with the prior art, the invention has the following beneficial effects:
(1) The wear-resistant anticorrosive paint disclosed by the invention is prepared from quaternary fluorocarbon resin, hydroxyl-terminated perfluoropolyether resin, hydrogenated bisphenol A epoxy resin and poly-perfluoromethyl isopropyl ether serving as main components, wherein the molecular chain of the quaternary fluorocarbon resin contains hydroxyl, carboxyl and other active groups, the groups can be subjected to addition reaction with isocyanate groups-NCO of an HDI trimer to form a urethane bond crosslinking network, so that the coating is cured, the fluorocarbon chain section of the wear-resistant anticorrosive paint endows the coating with high corrosion resistance and hydrophobicity, and the rigid structure of the quaternary fluorocarbon resin enables the anticorrosive coating to have good mechanical properties. The hydroxyl-terminated perfluoropolyether resin has the advantages that the hydroxyl-terminated groups can react with the component B to form a three-dimensional crosslinked network, the mechanical strength and adhesive force of the coating are improved, the low friction characteristic of the hydroxyl-terminated perfluoropolyether resin can reduce the surface abrasion of the anti-corrosion coating, in addition, the hydroxyl-terminated groups are physically adsorbed on the surface of the metal matrix, the adhesive force between the coating and the matrix is enhanced, the anti-corrosion layer can be firmly adhered on the surface of the metal matrix, the anti-corrosion layer is not easy to fall off or crack, and the stability of the anti-corrosion effect is ensured. The hydrogenated bisphenol A epoxy resin has good flexibility and impact resistance, can interact with other components such as quaternary fluorocarbon resin and the like to form a network structure with excellent toughness in the coating, so that the modified fluorocarbon anticorrosive coating has good hardness and wear resistance, can resist the influence of external mechanical stress to a certain extent, and avoids the reduction of the anticorrosive performance of the coating caused by brittle fracture of the coating. The poly-perfluoromethyl isopropyl ether can provide fluorine element and ether bond group, the existence of the ether bond enables the modified fluorocarbon anticorrosive layer to have lower surface energy, which is beneficial to reducing the adhesion of pollutants such as dirt and oil stain on the surface of the coating, further enhancing the durability and effectiveness of the anticorrosive layer, dispersing the anticorrosive layer in the coating, filling the micropore defects of other resins, and enhancing the compactness of the coating. Therefore, the lubricity of the hydroxyl-terminated perfluoropolyether resin and the toughness of the hydrogenated bisphenol A epoxy resin jointly improve the wear resistance, the low surface tension of the poly (perfluoromethyl isopropyl ether) promotes the uniform dispersion of other components and reduces the coating pores, the rigid structure of the quaternary fluorocarbon resin supports the compressive strength of the coating to form a wear-resistant system with hardness and softness, the interaction of the four components enables the coating to have a compact structure, and the coating has high fluorine content, so that the wear resistance and the corrosion resistance of the prepared coating are fundamentally ensured. The dimethyl carbonate and the methyl isobutyl ketone are used as solvents, the two solvents are compounded to avoid pinholes in a paint film caused by too fast evaporation of a single solvent, sagging phenomenon of the methyl isobutyl ketone when the methyl isobutyl ketone is singly used can be prevented, balance of spraying leveling property and curing speed is realized, trifluoropropyl methyl silicone oil is used as a defoaming agent, polyamide wax is used as a leveling agent, a mixture of modified sillimanite, chromium diboride and basic magnesium sulfate whisker is used as a filler, and the wear resistance of the paint is improved, so that the raw materials are cooperated to ensure the corrosion resistance and the wear resistance of the prepared wear-resistant anticorrosive paint.
(2) The wear-resistant anticorrosive paint disclosed by the invention takes the mixture of modified sillimanite, chromium diboride and basic magnesium sulfate whisker as a filler, a unique crystal structure of the sillimanite forms a rigid framework in the coating, the embedding and the plow effect of abrasive particles in the friction process can be resisted, the chromium diboride crystal structure forms hard wear-resistant particles in the coating and directly resists mechanical wear and abrasive particle cutting, the basic magnesium sulfate whisker is a needle-shaped single crystal fiber, a three-dimensional network structure is formed in the coating by the high length-diameter ratio of the basic magnesium sulfate whisker, and crack expansion is restrained through crack bridging, deflection and pulling effects, so that the three cooperate to further improve the wear resistance of the paint.
(3) When the wear-resistant anticorrosive paint disclosed by the invention is used for preparing quaternary fluorocarbon resin, 1-octene-3-alcohol acetate, 4-hydroxybutyl vinyl ether, itaconic acid and chlorotrifluoroethylene are adopted as raw materials, chlorotrifluoroethylene is used as fluorine-containing monomers to form a rigid structure of a molecular main chain, fluorine atoms are tightly arranged on the outer layer of a carbon chain to form a shielding effect, corrosion of acid alkali and salt mist is prevented, hydroxyl is introduced into the 4-hydroxybutyl vinyl ether to serve as a crosslinking site, the hydroxyl reacts with-NCO of an HDI trimer to form a compact three-dimensional network structure, and carboxyl groups of the itaconic acid can enhance compatibility of the prepared quaternary fluorocarbon resin with a filler, and meanwhile, the adhesive force of the coating is improved through hydrogen bonding, so that the prepared quaternary fluorocarbon resin has certain flexibility, and the improvement of flexibility can avoid the cracking of the coating due to internal stress. The four raw materials interact with each other, the rigid framework with high fluorine content is provided by the chlorotrifluoroethylene, chemical erosion is resisted, the 4-hydroxybutyl vinyl ether is introduced into a crosslinking site, the polarity of the prepared quaternary fluorocarbon resin is enhanced by itaconic acid, and the 1-octene-3-alcohol acetate ensures that the prepared quaternary fluorocarbon resin has certain flexibility, so that the prepared quaternary fluorocarbon resin has excellent corrosion resistance.
(4) The raw materials of the wear-resistant anticorrosive paint disclosed by the invention have synergistic effect, so that the prepared paint has excellent salt spray resistance, acid and alkali resistance, and lower wet friction coefficient and wear rate.
(5) The preparation method of the wear-resistant anticorrosive paint has the advantages of simple process, easy parameter control, realization of normal-temperature solidification and stable performance of the paint after spraying.
Detailed Description
The invention is further described below with reference to examples.
Example 1
The wear-resistant anticorrosive paint disclosed by the embodiment 1 comprises, by weight, 31 parts of quaternary fluorocarbon resin, 11 parts of hydroxyl-terminated perfluoropolyether resin, 14 parts of hydrogenated bisphenol A epoxy resin, 4 parts of poly (perfluoromethyl isopropyl ether), 0.05 part of di-n-butyltin dilaurate, 10.3 parts of dimethyl carbonate, 3.3 parts of methyl isobutyl ketone, 16 parts of a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker, 0.3 part of trifluoropropyl methyl silicone oil and 0.9 part of polyamide wax, and B is hexamethylene diisocyanate trimer.
The preparation method of the quaternary fluorocarbon resin comprises the following steps of firstly vacuumizing a high-pressure reaction kettle, introducing argon to enable the high-pressure reaction kettle to keep an anhydrous and anaerobic environment, then controlling the pressure of the high-pressure reaction kettle to be 1.5MPa, firstly adding a solvent which is a mixture of 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether and dimethylbenzene, then adding 1-octene-3-alcohol acetate, 4-hydroxybutyl vinyl ether, itaconic acid and azodiisobutyronitrile, then introducing chlorotrifluoroethylene gas into the high-pressure reaction kettle, reacting for 7 hours at 74 ℃, cooling the reaction kettle to room temperature, depressurizing and discharging unreacted chlorotrifluoroethylene gas, precipitating the obtained liquid by adopting ethanol, filtering, and performing Soxhlet extraction and drying to obtain the quaternary fluorocarbon resin.
In the preparation method of the quaternary fluorocarbon resin, the molar ratio of the chlorotrifluoroethylene to the 4-hydroxybutyl vinyl ether to the itaconic acid to the 1-octene-3-alcohol acetate is 50:30:10:10.
The mass of the azodiisobutyronitrile in the preparation method of the quaternary fluorocarbon resin accounts for 0.7 percent of the sum of the mass of the chlorotrifluoroethylene, the 4-hydroxybutyl vinyl ether, the itaconic acid and the 1-octene-3-alcohol acetate.
The solvent volume in the preparation method of the quaternary fluorocarbon resin accounts for 60 percent of the volume of the solvent including 4-hydroxybutyl vinyl ether, itaconic acid, 1-octene-3-alcohol acetate, azodiisobutyronitrile and the like.
In the preparation method of the quaternary fluorocarbon resin, the volume ratio of the 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether to the dimethylbenzene is 3:1.
The manufacturer of the hydroxyl-terminated perfluoropolyether resin is Kaimei chemical technology (Nantong) Co., ltd, the model is FB-800, the fluorine content is 42%, the functionality is 2, and the viscosity at 25 ℃ is 600mPa.s.
The preparation method of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker comprises the following steps of mixing ethanol and deionized water to prepare a mixed solution, adding a KH-550 silane coupling agent, stirring for 1.0h at a rotating speed of 600r/min, adding the mixture of the sillimanite powder, the nano chromium diboride and the basic magnesium sulfate whisker, shearing for 50min at a high speed, reacting for 3h at 55 ℃, vacuum-filtering, and finally drying under a vacuum condition to prepare the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
Wherein the volume ratio of KH-550 silane coupling agent, ethanol and deionized water is 5:18:2.
The mass of KH-550 silane coupling agent is 2.0% of the sum of the mass of sillimanite powder, nanometer chromium diboride and basic magnesium sulfate whisker.
The mass ratio of the sillimanite powder to the nano chromium diboride to the basic magnesium sulfate whisker is 3:1.0:0.9.
The vacuum drying temperature is 70 ℃ and the vacuum drying time is 3 hours in the preparation process of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
The preparation method of the wear-resistant anticorrosive paint of the embodiment 1 comprises the following steps:
(1) Firstly, uniformly mixing hydrogenated bisphenol A epoxy resin, dimethyl carbonate and methyl isobutyl ketone, then adding quaternary fluorocarbon resin, hydroxyl-terminated perfluoropolyether resin and poly-perfluoromethyl isopropyl ether for blending, then adding a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker for high-speed dispersion for 24min, adding polyamide wax and di-n-butyltin dilaurate for mixing for 1.5h, and finally adding trifluoropropyl methyl silicone oil for stirring for 4min to prepare a component A;
(2) And uniformly mixing the component A and the component B according to the weight ratio of 10:1 to prepare the wear-resistant anticorrosive paint.
Wherein the stirring rotating speed of the step (1) is 700r/min when the component A is prepared.
In the step (2), the stirring speed is 800r/min, the stirring time is 26min, and the stirring temperature is 25 ℃.
And (3) spraying the wear-resistant anticorrosive paint in the step (2), and then curing for 36 hours at room temperature.
Example 2
The wear-resistant anticorrosive paint disclosed by the embodiment 2 comprises, by weight, 32 parts of quaternary fluorocarbon resin, 10 parts of hydroxyl-terminated perfluoropolyether resin, 13 parts of hydrogenated bisphenol A epoxy resin, 5 parts of poly (perfluoromethyl isopropyl ether), 0.05 part of di-n-butyltin dilaurate, 10.5 parts of dimethyl carbonate, 3 parts of methyl isobutyl ketone, 17 parts of a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker, 0.2 part of trifluoropropyl methyl silicone oil and 1.0 part of polyamide wax, and B is hexamethylene diisocyanate trimer.
The preparation method of the quaternary fluorocarbon resin comprises the following steps of firstly vacuumizing a high-pressure reaction kettle, introducing argon to enable the high-pressure reaction kettle to keep an anhydrous and anaerobic environment, then controlling the pressure of the high-pressure reaction kettle to be 1.5MPa, firstly adding a solvent which is a mixture of 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether and dimethylbenzene, then adding 1-octene-3-alcohol acetate, 4-hydroxybutyl vinyl ether, itaconic acid and azodiisobutyronitrile, then introducing chlorotrifluoroethylene gas into the high-pressure reaction kettle, reacting for 7 hours at 75 ℃, cooling the reaction kettle to room temperature, depressurizing and discharging unreacted chlorotrifluoroethylene gas, precipitating the obtained liquid by adopting ethanol, filtering, and performing Soxhlet extraction and drying to obtain the quaternary fluorocarbon resin.
In the preparation method of the quaternary fluorocarbon resin, the molar ratio of the chlorotrifluoroethylene to the 4-hydroxybutyl vinyl ether to the itaconic acid to the 1-octene-3-alcohol acetate is 50:30:10:10.
The mass of the azodiisobutyronitrile in the preparation method of the quaternary fluorocarbon resin accounts for 0.7 percent of the sum of the mass of the chlorotrifluoroethylene, the 4-hydroxybutyl vinyl ether, the itaconic acid and the 1-octene-3-alcohol acetate.
The solvent volume in the preparation method of the quaternary fluorocarbon resin accounts for 60 percent of the volume of the solvent including 4-hydroxybutyl vinyl ether, itaconic acid, 1-octene-3-alcohol acetate, azodiisobutyronitrile and the like.
In the preparation method of the quaternary fluorocarbon resin, the volume ratio of the 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether to the dimethylbenzene is 3:1.
The manufacturer of the hydroxyl-terminated perfluoropolyether resin is Kaimei chemical technology (Nantong) Co., ltd, the model is FB-800, the fluorine content is 42%, the functionality is 2, and the viscosity at 25 ℃ is 600mPa.s.
The preparation method of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker comprises the following steps of mixing ethanol and deionized water to prepare a mixed solution, adding a KH-550 silane coupling agent, stirring for 1.0h at a rotating speed of 600r/min, adding the mixture of the sillimanite powder, the nano chromium diboride and the basic magnesium sulfate whisker, shearing for 50min at a high speed, reacting for 3h at 55 ℃, vacuum-filtering, and finally drying under a vacuum condition to prepare the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
Wherein the volume ratio of KH-550 silane coupling agent, ethanol and deionized water is 5:18:2.
The mass of KH-550 silane coupling agent is 2.0% of the sum of the mass of sillimanite powder, nanometer chromium diboride and basic magnesium sulfate whisker.
The mass ratio of the sillimanite powder to the nano chromium diboride to the basic magnesium sulfate whisker is 3:1.1:0.8.
The vacuum drying temperature is 70 ℃ and the vacuum drying time is 3 hours in the preparation process of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
The preparation method of the wear-resistant anticorrosive paint of the embodiment 2 comprises the following steps:
(1) Firstly, uniformly mixing hydrogenated bisphenol A epoxy resin, dimethyl carbonate and methyl isobutyl ketone, then adding quaternary fluorocarbon resin, hydroxyl-terminated perfluoropolyether resin and poly-perfluoromethyl isopropyl ether for blending, then adding a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker for high-speed dispersion for 25min, adding polyamide wax and di-n-butyltin dilaurate for mixing for 1.5h, and finally adding trifluoropropyl methyl silicone oil for stirring for 5min to prepare a component A;
(2) And uniformly mixing the component A and the component B according to the weight ratio of 10:1 to prepare the wear-resistant anticorrosive paint.
Wherein the stirring rotating speed of the step (1) is 700r/min when the component A is prepared.
In the step (2), the stirring speed is 800r/min, the stirring time is 27min, and the stirring temperature is 25 ℃.
And (3) spraying the wear-resistant anticorrosive paint in the step (2), and then curing for 36 hours at room temperature.
Example 3
The wear-resistant anticorrosive paint of the embodiment 3 comprises, by weight, 30 parts of quaternary fluorocarbon resin, 12 parts of hydroxyl-terminated perfluoropolyether resin, 15 parts of hydrogenated bisphenol A epoxy resin, 3 parts of poly (perfluoromethyl isopropyl ether), 0.05 part of di-n-butyltin dilaurate, 10 parts of dimethyl carbonate, 3.5 parts of methyl isobutyl ketone, 15 parts of a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker, 0.4 part of trifluoropropyl methyl silicone oil and 0.8 part of polyamide wax, and B is hexamethylene diisocyanate trimer.
The preparation method of the quaternary fluorocarbon resin comprises the following steps of firstly vacuumizing a high-pressure reaction kettle, introducing argon gas, keeping the high-pressure reaction kettle in an anhydrous and anaerobic environment, then controlling the pressure of the high-pressure reaction kettle to be 1.5MPa, firstly adding a solvent which is a mixture of 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether and dimethylbenzene, then adding 1-octene-3-alcohol acetate, 4-hydroxybutyl vinyl ether, itaconic acid and azodiisobutyronitrile, then introducing chlorotrifluoroethylene gas into the high-pressure reaction kettle, reacting for 7 hours at 73 ℃, cooling the reaction kettle to room temperature, depressurizing and discharging unreacted chlorotrifluoroethylene gas, precipitating the obtained liquid by adopting ethanol, filtering, and performing Soxhlet extraction and drying to obtain the quaternary fluorocarbon resin.
In the preparation method of the quaternary fluorocarbon resin, the molar ratio of the chlorotrifluoroethylene to the 4-hydroxybutyl vinyl ether to the itaconic acid to the 1-octene-3-alcohol acetate is 50:30:10:10.
The mass of the azodiisobutyronitrile in the preparation method of the quaternary fluorocarbon resin accounts for 0.7 percent of the sum of the mass of the chlorotrifluoroethylene, the 4-hydroxybutyl vinyl ether, the itaconic acid and the 1-octene-3-alcohol acetate.
The solvent volume in the preparation method of the quaternary fluorocarbon resin accounts for 60 percent of the volume of the solvent including 4-hydroxybutyl vinyl ether, itaconic acid, 1-octene-3-alcohol acetate, azodiisobutyronitrile and the like.
In the preparation method of the quaternary fluorocarbon resin, the volume ratio of the 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether to the dimethylbenzene is 3:1.
The manufacturer of the hydroxyl-terminated perfluoropolyether resin is Kaimei chemical technology (Nantong) Co., ltd, the model is FB-800, the fluorine content is 42%, the functionality is 2, and the viscosity at 25 ℃ is 600mPa.s.
The preparation method of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker comprises the following steps of mixing ethanol and deionized water to prepare a mixed solution, adding a KH-550 silane coupling agent, stirring for 1.0h at a rotating speed of 600r/min, adding the mixture of the sillimanite powder, the nano chromium diboride and the basic magnesium sulfate whisker, shearing for 50min at a high speed, reacting for 3h at 55 ℃, vacuum-filtering, and finally drying under a vacuum condition to prepare the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
Wherein the volume ratio of KH-550 silane coupling agent, ethanol and deionized water is 5:18:2.
The mass of KH-550 silane coupling agent is 2.0% of the sum of the mass of sillimanite powder, nanometer chromium diboride and basic magnesium sulfate whisker.
The mass ratio of the sillimanite powder to the nano chromium diboride to the basic magnesium sulfate whisker is 3:0.9:1.0.
The vacuum drying temperature is 70 ℃ and the vacuum drying time is 3 hours in the preparation process of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker.
The preparation method of the wear-resistant anticorrosive paint of the embodiment 3 comprises the following steps:
(1) Firstly, uniformly mixing hydrogenated bisphenol A epoxy resin, dimethyl carbonate and methyl isobutyl ketone, then adding quaternary fluorocarbon resin, hydroxyl-terminated perfluoropolyether resin and poly-perfluoromethyl isopropyl ether for blending, then adding a mixture of modified sillimanite, nano chromium diboride and basic magnesium sulfate whisker for high-speed dispersion for 23min, adding polyamide wax and di-n-butyltin dilaurate for mixing for 1.5h, and finally adding trifluoropropyl methyl silicone oil for stirring for 3min to prepare a component A;
(2) And uniformly mixing the component A and the component B according to the weight ratio of 10:1 to prepare the wear-resistant anticorrosive paint.
Wherein the stirring rotating speed of the step (1) is 700r/min when the component A is prepared.
In the step (2), the stirring speed is 800r/min, the stirring time is 25min, and the stirring temperature is 25 ℃.
And (3) spraying the wear-resistant anticorrosive paint in the step (2), and then curing for 36 hours at room temperature.
Comparative example 1
The method for preparing the abrasion-resistant anticorrosive paint of comparative example 1 is the same as that of example 1, except that the raw material composition of the abrasion-resistant anticorrosive paint is different from that of example 1, the mixture of the modified sillimanite of component a, the nano chromium diboride and the basic magnesium sulfate whisker is replaced with the modified sillimanite, and the method for preparing the modified sillimanite is the same as that of example 1.
Comparative example 2
The preparation method of the wear-resistant anticorrosive paint of the comparative example 2 is the same as that of example 1, except that the raw material composition of the wear-resistant anticorrosive paint is different from that of example 1, the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker of the A component is replaced by the modified nano chromium diboride, and the preparation method of the modified nano chromium diboride is the same as that of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker of example 1.
Comparative example 3
The preparation method of the wear-resistant anticorrosive paint of comparative example 3 is the same as that of example 1, except that the raw material composition of the wear-resistant anticorrosive paint is different from that of example 1, the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker of the component a is replaced with the modified basic magnesium sulfate whisker, and the preparation method of the modified basic magnesium sulfate whisker is the same as that of the mixture of the modified sillimanite, the nano chromium diboride and the basic magnesium sulfate whisker of example 1.
Comparative example 4
The preparation method of the wear-resistant anticorrosive paint of comparative example 4 is the same as that of example 1, except that the raw material composition of the wear-resistant anticorrosive paint is different from that of example 1, and the quaternary fluorocarbon resin is not added to the raw material of comparative example 4.
The abrasion-resistant anticorrosive coatings prepared in examples 1 to 3 and comparative examples 1 to 4 were sprayed on the surface of a sucker rod to perform performance tests, the results of which are shown in the following table 1, wherein the salt spray resistance test standard is GB/T1771-2007, the acid and alkali resistance test standard is GB/T9274-1988, the corrosive medium adopts 10% H2SO4 solution and 10% NaOH solution, the coating hardness test standard is GB/T6739-2022, the coating adhesion test standard is GB/T9286-2021, the coating impact resistance test standard is GB/T1732-2020, the coating frictional wear performance is evaluated by a linear reciprocating test using a CFT-I frictional tester, the test adopts a ball-disc structure, a steel ball with a diameter of 4mm, the load is 3N, wet friction is performed at a constant rotation speed of 400r/min, a saline simulated wetting environment is injected at a frictional interface, and the test time is 30min. All friction pairs were washed several times with ethanol before the test to remove surface impurities. Each test was repeated 4 times under the same conditions.
TABLE 1 results of the performance test of the abrasion-resistant anticorrosive coatings of examples 1 to 3 and comparative examples 1 to 4