CN109796795B - Preparation method of acid and alkali corrosion resistant water-based antirust paint - Google Patents
Preparation method of acid and alkali corrosion resistant water-based antirust paint Download PDFInfo
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Abstract
The invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint, which comprises the following steps: s1, taking zinc phosphate, iron oxide red and aluminum powder, and grinding and refining to obtain a pigment mixture; s2, mixing the pigment mixture with crospovidone and N-methyl pyrrolidone to obtain modified pigment slurry; s3, preparing raw materials; s4, mixing the aqueous synthetic resin dispersion liquid with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, stirring, and adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder to obtain a component A; s5, mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane to obtain a component B; and S6, mixing the component A and the component B to obtain the acid and alkali corrosion resistant water-based antirust paint. The preparation method provided by the invention is simple to operate, and the prepared antirust paint is safe, environment-friendly and resistant to acid, alkali and salt corrosion.
Description
Technical Field
The invention relates to the technical field of antirust paint, in particular to a preparation method of acid and alkali corrosion resistant water-based antirust paint.
Background
The antirust paint is a coating capable of protecting the surface of metal from chemical or electrochemical corrosion of atmosphere, seawater and the like, and is widely applied to the rust prevention of metals such as bridges, ships, pipelines and the like. Synthetic resin is a main film-forming substance, and currently used antirust paints are mainly classified into solvent-based antirust paints and water-based antirust paints. The solvent-based antirust paint has the advantages of excellent chemical resistance, acid-base salt resistance, strong adhesive force, high drying speed, capability of being dried at room temperature and the like, occupies certain market advantages, and along with the enhancement of environmental protection consciousness of people, the water-based antirust paint taking water as a solvent is safer and more environment-friendly than the solvent-based antirust paint and is bound to become the future development direction of the antirust paint. Based on the defects of the prior art, the invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint.
Disclosure of Invention
The invention aims to solve the problems that the existing solvent-based antirust paint is not environment-friendly, the existing water-based antirust paint is not ideal in acid and alkali salt resistance, slow in drying speed and long in construction time, and provides a preparation method of the acid and alkali salt corrosion resistant water-based antirust paint.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a preparation method of acid and alkali corrosion resistant water-based antirust paint comprises the following steps:
s1, mixing the components in a mass ratio of 20-24: 3-6: 4-8, weighing zinc phosphate, iron oxide red and aluminum powder, adding a grinding aid with the mass of 2-5% of that of the zinc phosphate, grinding and refining for 1-2 h, concentrating under reduced pressure to recover absolute ethyl alcohol, and drying to obtain a pigment mixture;
s2, mixing the components in a mass ratio of 45-48: 1-4: 30-36, mixing the pigment mixture with the crospovidone and the N-methyl pyrrolidone, mechanically stirring for 1-2 hours at the temperature of 40-46 ℃, cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 30-40 min at the room temperature to obtain modified pigment slurry;
s3, weighing 100-110 parts by weight of aqueous synthetic resin dispersion, 3-6 parts by weight of isopropenyl acetate, 10-16 parts by weight of modified pigment slurry, 1-3 parts by weight of 8-hydroxyquinoline copper, 0.3-0.6 part by weight of 4-vinyl-2-methoxyphenol, 3-7 parts by weight of far infrared ceramic powder, 0.05-0.15 part by weight of N, N' -tetrahydroxyethyl ethylenediamine, 0.3-0.6 part by weight of monolauryl phosphate and 40-50 parts by weight of water for later use;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 30-40 min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, and uniformly mixing to obtain a component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the components in a mass ratio of 17-26: 4-8: 15-19, mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 5-10: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
Preferably, the aqueous synthetic resin dispersion is one of an aqueous polyurethane resin dispersion, an aqueous epoxy resin dispersion and an aqueous acrylic resin dispersion.
Preferably, in step S1, the grinding aid is prepared by mixing, by mass, 50-54: 1-3: 10-16 parts of absolute ethyl alcohol, sodium dodecyl sulfate and isopropanol.
Preferably, in step S2, the mass ratio of the pigment mixture to the crospovidone to the N-methylpyrrolidone is 47: 2: 33.
preferably, the component A of the acid and alkali corrosion resistant water-based antirust paint comprises the following raw materials in parts by weight: 105 parts of aqueous synthetic resin dispersion liquid, 4 parts of isopropenyl acetate, 13 parts of modified pigment slurry, 2 parts of 8-hydroxyquinoline copper, 0.5 part of 4-vinyl-2-methoxyphenol, 5 parts of far infrared ceramic powder, 0.1 part of N, N' -tetrahydroxyethyl ethylenediamine, 0.5 part of monolauryl phosphate and 45 parts of water.
Preferably, in step S4, the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, and the time interval between the addition of the modified pigment slurry and the addition of the far infrared ceramic powder is not less than 30 min.
Preferably, the component B of the acid and alkali corrosion resistant water-based antirust paint is prepared from the following components in percentage by mass 22: 6: 17 triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane.
Compared with the prior art, the method has the advantages that:
1. the production method provided by the invention is simple to operate, firstly zinc phosphate, iron oxide red and aluminum powder are mixed to obtain a pigment mixture, then the pigment mixture is modified, the obtained modified pigment slurry is prepared into a component A of the antirust paint by using aqueous synthetic resin dispersion, isopropenyl acetate, 8-hydroxyquinoline copper, 4-vinyl-2-methoxyphenol, far infrared ceramic powder, N' -tetrahydroxyethyl ethylenediamine, monolauryl phosphate and water in a reasonable proportion, the component A of the antirust paint is mixed with a component B of the antirust paint prepared from triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, and finally the antirust paint prepared by the method has good antirust performance, The paint has the advantages of corrosion resistance, acid and alkali salt corrosion resistance and ageing resistance, takes water as a medium, is safe and environment-friendly, adopts a mixture of zinc phosphate, iron oxide red and aluminum powder as a pigment, is lead-free, nontoxic and fast in drying speed, and effectively solves the problems of unfriendly environment, unsatisfactory acid and alkali salt resistance, slow drying speed and long construction time of the existing solvent-based antirust paint.
2. In the preparation process of the pigment mixture, a grinding aid formed by mixing absolute ethyl alcohol, sodium dodecyl sulfate and isopropanol is added to increase the contact area among the pigments, the mixing speed among the pigments is accelerated, the mixing time of the pigments is shortened by more than 20%, the pigment mixture after being subjected to auxiliary grinding by the grinding aid can be easily combined with the cross-linked povidone and the N-methyl pyrrolidone to promote the cross-linked povidone and the N-methyl pyrrolidone to modify the pigment mixture, the modified pigment slurry obtained through modification can be rapidly dispersed in aqueous synthetic resin dispersion liquid, the antirust paint can be endowed with good acid-base salt corrosion resistance, and the isopropenyl acetate, 8-0 hydroxyquinoline copper, 4-vinyl-2-methoxyphenol, far infrared ceramic powder, far infrared powder and the like added in the antirust paint are matched, The N, N' -tetrahydroxyethyl ethylenediamine can obviously improve the antirust performance, the anticorrosion performance, the acid-base salt corrosion resistance and the ageing resistance of the antirust paint.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
The invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint, which comprises the following steps:
s1, mixing the components in a mass ratio of 20: 3: 4, weighing zinc phosphate, iron oxide red and aluminum powder, adding a grinding aid with the mass of 2 percent of the zinc phosphate, grinding and refining for 1 hour, decompressing, concentrating, recovering absolute ethyl alcohol, and drying to obtain a pigment mixture; the grinding aid is prepared from the following components in percentage by mass of 54: 3: 16 absolute ethyl alcohol, sodium dodecyl sulfate and isopropanol;
s2, mixing the components in a mass ratio of 45: 1: 30, mixing the pigment mixture with the crospovidone and the N-methyl pyrrolidone, mechanically stirring for 1h at 46 ℃, cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 40min at the room temperature to obtain modified pigment slurry;
s3, weighing 100 parts by weight of aqueous synthetic resin dispersion, 6 parts by weight of isopropenyl acetate, 16 parts by weight of modified pigment slurry, 1 part by weight of 8-hydroxyquinoline copper, 0.6 part by weight of 4-vinyl-2-methoxyphenol, 7 parts by weight of far infrared ceramic powder, 0.05 part by weight of N, N' -tetrahydroxyethyl ethylenediamine, 0.3 part by weight of monolauryl phosphate and 40 parts by weight of water for later use; the aqueous synthetic resin dispersion is aqueous polyurethane resin dispersion;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 40min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, wherein the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, the time interval between the addition of the modified pigment slurry and the addition of the far infrared ceramic powder is not less than 30min, and uniformly mixing to obtain the component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the components in a mass ratio of 17: 4: 15 mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 10: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
Example 2
The invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint, which comprises the following steps:
s1, mixing the components in a mass ratio of 21: 4: 5, weighing zinc phosphate, iron oxide red and aluminum powder, adding a grinding aid with the mass of 3 percent of the zinc phosphate, grinding and refining for 1.5h, decompressing, concentrating, recovering absolute ethyl alcohol, and drying to obtain a pigment mixture; the grinding aid is prepared from the following components in percentage by mass of 51: 2: 11, absolute ethyl alcohol, lauryl sodium sulfate and isopropanol;
s2, mixing the components in a mass ratio of 47: 3: 35 mixing the pigment mixture with the crospovidone and the N-methylpyrrolidone, mechanically stirring for 1h at 46 ℃, cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 40min at the room temperature to obtain modified pigment slurry;
s3, weighing 105 parts by weight of aqueous synthetic resin dispersion, 4 parts by weight of isopropenyl acetate, 12 parts by weight of modified pigment slurry, 2 parts by weight of 8-hydroxyquinoline copper, 0.5 part by weight of 4-vinyl-2-methoxyphenol, 6 parts by weight of far infrared ceramic powder, 0.12 part by weight of N, N' -tetrahydroxyethyl ethylenediamine, 0.5 part by weight of monolauryl phosphate and 45 parts by weight of water for later use; the aqueous synthetic resin dispersion is aqueous acrylic resin dispersion;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 30-40 min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, wherein the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, the time interval between the addition of the modified pigment slurry and the addition of the far infrared ceramic powder is not less than 30min, and uniformly mixing to obtain a component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the components in a mass ratio of 18: 5: 16 mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 6: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
Example 3
The invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint, which comprises the following steps:
s1, mixing the raw materials in a mass ratio of 22: 5: 6, weighing zinc phosphate, iron oxide red and aluminum powder, adding a grinding aid with the mass of 4% of that of the zinc phosphate, grinding and refining for 2 hours, decompressing, concentrating, recovering absolute ethyl alcohol, and drying to obtain a pigment mixture; the grinding aid is prepared from the following components in percentage by mass of 52: 2: 13 anhydrous ethanol, sodium dodecyl sulfate and isopropanol;
s2, mixing the components in a mass ratio of 47: 2: 33, mixing the pigment mixture with the crospovidone and the N-methylpyrrolidone, mechanically stirring for 1.5 hours at the temperature of 43 ℃, then cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 35 minutes at the room temperature to obtain modified pigment slurry;
s3, weighing 105 parts by weight of aqueous synthetic resin dispersion, 4 parts by weight of isopropenyl acetate, 13 parts by weight of modified pigment slurry, 2 parts by weight of 8-hydroxyquinoline copper, 0.5 part by weight of 4-vinyl-2-methoxyphenol, 5 parts by weight of far infrared ceramic powder, 0.1 part by weight of N, N' -tetrahydroxyethyl ethylenediamine, 0.5 part by weight of monolauryl phosphate and 45 parts by weight of water for later use; the aqueous synthetic resin dispersion is an aqueous epoxy resin dispersion;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 35min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, wherein the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, the time interval between the addition of the modified pigment slurry and the addition of the far infrared ceramic powder is not less than 30min, and uniformly mixing to obtain the component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the raw materials in a mass ratio of 22: 6: 17 mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 8: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
Example 4
The invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint, which comprises the following steps:
s1, mixing the components in a mass ratio of 23: 5: 7, weighing zinc phosphate, iron oxide red and aluminum powder, adding a grinding aid with the mass of 4% of that of the zinc phosphate, grinding and refining for 2 hours, concentrating under reduced pressure to recover absolute ethyl alcohol, and drying to obtain a pigment mixture; the grinding aid is prepared from the following components in percentage by mass of 53: 2: 15, absolute ethyl alcohol, lauryl sodium sulfate and isopropanol;
s2, mixing the components in a mass ratio of 46: 2: 32, mixing the pigment mixture with the crospovidone and the N-methylpyrrolidone, mechanically stirring for 2 hours at 40 ℃, cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 30 minutes at room temperature to obtain modified pigment slurry;
s3, weighing 110 parts by weight of aqueous synthetic resin dispersion, 4 parts by weight of isopropenyl acetate, 13 parts by weight of modified pigment slurry, 3 parts by weight of 8-hydroxyquinoline copper, 0.4 part by weight of 4-vinyl-2-methoxyphenol, 6 parts by weight of far infrared ceramic powder, 0.08 part by weight of N, N' -tetrahydroxyethyl ethylenediamine, 0.4 part by weight of monolauryl phosphate and 40 parts by weight of water for later use; the aqueous synthetic resin dispersion is aqueous acrylic resin dispersion;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 40min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, wherein the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, the time interval between the addition of the modified pigment slurry and the addition of the far infrared ceramic powder is not less than 30min, and uniformly mixing to obtain the component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the components in a mass ratio of 20: 7: 17 mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 9: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
Example 5
The invention provides a preparation method of acid and alkali corrosion resistant water-based antirust paint, which comprises the following steps:
s1, mixing the components in a mass ratio of 24: 6: 8, weighing zinc phosphate, iron oxide red and aluminum powder, adding a grinding aid with 5 percent of zinc phosphate by mass, grinding and refining for 2 hours, concentrating under reduced pressure to recover absolute ethyl alcohol, and drying to obtain a pigment mixture; the grinding aid is prepared from the following components in percentage by mass of 50: 1: 10 of absolute ethyl alcohol, sodium dodecyl sulfate and isopropanol;
s2, mixing the components in a mass ratio of 48: 4: 36, mixing the pigment mixture with the crospovidone and the N-methylpyrrolidone, mechanically stirring for 1-2 hours at 40 ℃, cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 30 minutes at room temperature to obtain modified pigment slurry;
s3, weighing 110 parts by weight of aqueous synthetic resin dispersion, 3 parts by weight of isopropenyl acetate, 10 parts by weight of modified pigment slurry, 3 parts by weight of 8-hydroxyquinoline copper, 0.3 part by weight of 4-vinyl-2-methoxyphenol, 3 parts by weight of far infrared ceramic powder, 0.15 part by weight of N, N' -tetrahydroxyethyl ethylenediamine, 0.6 part by weight of monolauryl phosphate and 50 parts by weight of water for later use; the aqueous synthetic resin dispersion is aqueous acrylic resin dispersion;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 30min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, wherein the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, the time interval between the addition of the modified pigment slurry and the addition of the far infrared ceramic powder is not less than 30min, and uniformly mixing to obtain the component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the components in a mass ratio of 26: 8: 19 mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 5: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
Comparative example
The modified pigment paste of example 3 was replaced with an unmodified pigment mixture, and the quality of the pigment mixture added in this comparative example was the same as that of the pigment mixture in the modified pigment paste of example 3, and the other conditions were the same as in example 3.
The performance tests of the water-based antirust paints prepared in the above examples 1-5 and comparative examples, as well as the commercially available water-based antirust paints and solvent-based antirust paints were performed, and the results are shown in the following table.
| Test items | Alkali resistance | Acid resistance | Salt water resistance | Resistance to salt fog |
| Example 1 | No abnormality | No abnormality | 158h | 306h |
| Example 2 | No abnormality | No abnormality | 165h | 310h |
| Example 3 | No abnormality | No abnormality | 172h | 319h |
| Example 4 | No abnormality | No abnormality | 168h | 300h |
| Example 5 | No abnormality | No abnormality | 160h | 297h |
| Comparative example | Slight loss of light | Slight loss of light | 113h | 235h |
| Commercial water-based antirust paint | Slight loss of light | Apparent loss of light | 48h | 200h |
| Commercial solvent-based antirust paint | No abnormality | No abnormality | 170h | 315h |
In the table, "alkali resistance": soaking in 3% sodium hydroxide solution for 30 d; "acid resistance": soaking in 3% sulfuric acid solution for 30 days; "salt water resistance": testing according to the GB/T1763 standard; "salt spray resistance": the test was carried out with reference to the GB/T1771 standard.
The above experimental results show that: the comprehensive performance of the water-based antirust paint prepared by the preparation method is similar to that of the commercially available solvent-based antirust paint and is far better than that of the commercially available water-based antirust paint, but compared with the commercially available solvent-based antirust paint, the water-based antirust paint prepared by the preparation method disclosed by the invention takes water as a medium, is safer and more environment-friendly, and the acid and alkali salt resistance of the water-based antirust paint disclosed by the invention is influenced to a certain extent by the modification step of the pigment mixture.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The preparation method of the acid and alkali corrosion resistant water-based antirust paint is characterized by comprising the following steps of:
s1, mixing the components in a mass ratio of 20-24: 3-6: 4-8, weighing zinc phosphate, iron oxide red and aluminum powder, and adding a grinding aid accounting for 2-5% of the mass of the zinc phosphate, wherein the grinding aid is prepared from the following components in parts by mass: 1-3: 10-16 parts of absolute ethyl alcohol, sodium dodecyl sulfate and isopropanol, grinding and refining for 1-2 hours, decompressing, concentrating, recovering the absolute ethyl alcohol, and drying to obtain a pigment mixture;
s2, mixing the components in a mass ratio of 45-48: 1-4: 30-36, mixing the pigment mixture with the crospovidone and the N-methyl pyrrolidone, mechanically stirring for 1-2 hours at the temperature of 40-46 ℃, cooling to room temperature at the speed of 2 ℃/min, and ultrasonically dispersing for 30-40 min at the room temperature to obtain modified pigment slurry;
s3, weighing 100-110 parts by weight of aqueous synthetic resin dispersion, 3-6 parts by weight of isopropenyl acetate, 10-16 parts by weight of modified pigment slurry, 1-3 parts by weight of 8-hydroxyquinoline copper, 0.3-0.6 part by weight of 4-vinyl-2-methoxyphenol, 3-7 parts by weight of far infrared ceramic powder, 0.05-0.15 part by weight of N, N, N ', N' -tetrahydroxyethyl ethylenediamine, 0.3-0.6 part by weight of monolauryl phosphate and 40-50 parts by weight of water for later use;
s4, mixing the aqueous synthetic resin dispersion with water, adding N, N, N ', N' -tetrahydroxyethyl ethylenediamine, 8-hydroxyquinoline copper and monolauryl phosphate, mechanically stirring for 30-40 min, sequentially adding 4-vinyl-2-methoxyphenol, modified pigment slurry and far infrared ceramic powder, and uniformly mixing to obtain a component A of the acid and alkali corrosion resistant aqueous antirust paint;
s5, mixing the components in a mass ratio of 17-26: 4-8: 15-19, mixing triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane, ultrasonically dispersing for 30min, and cooling to room temperature to obtain a component B of the acid and alkali corrosion resistant water-based antirust paint;
s6, mixing the component A and the component B of the acid and alkali corrosion resistant water-based antirust paint according to the mass ratio of 5-10: 1, and uniformly mixing to obtain the acid and alkali corrosion resistant water-based antirust paint.
2. The preparation method of the acid and alkali corrosion resistant water-based antirust paint, according to claim 1, wherein the water-based synthetic resin dispersion is one of a water-based polyurethane resin dispersion, a water-based epoxy resin dispersion and a water-based acrylic resin dispersion.
3. The preparation method of the acid and alkali corrosion resistant water-based antirust paint according to claim 1, wherein in step S2, the mass ratio of the pigment mixture to the crospovidone and the N-methylpyrrolidone is 47: 2: 33.
4. the preparation method of the acid and alkali corrosion resistant water-based antirust paint as claimed in claim 1, wherein the component A of the acid, alkali and salt corrosion resistant water-based antirust paint comprises the following raw materials in parts by weight: 105 parts of aqueous synthetic resin dispersion liquid, 4 parts of isopropenyl acetate, 13 parts of modified pigment slurry, 2 parts of 8-hydroxyquinoline copper, 0.5 part of 4-vinyl-2-methoxyphenol, 5 parts of far infrared ceramic powder, 0.1 part of N, N, N ', N' -tetrahydroxyethyl ethylenediamine, 0.5 part of monolauryl phosphate and 45 parts of water.
5. The method for preparing the acid and alkali corrosion resistant water-based antirust paint as claimed in claim 1, wherein in step S4, the time interval between the addition of the 4-vinyl-2-methoxyphenol and the modified pigment slurry is not less than 20min, and the time interval between the addition of the modified pigment slurry and the far infrared ceramic powder is not less than 30 min.
6. The preparation method of the acid, alkali and salt corrosion resistant water-based antirust paint as claimed in claim 1, wherein the component B of the acid, alkali and salt corrosion resistant water-based antirust paint is prepared from the following components in a mass ratio of 22: 6: 17 triethylene tetramine, 2-ethyl-4-methylimidazole and 3-aminopropyltriethoxysilane.
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| CN106380936A (en) * | 2016-11-04 | 2017-02-08 | 南平博士达节能科技有限公司 | Water-based nanometer color paste for synthetic leather coating agent and preparation method thereof |
| CN106700699A (en) * | 2016-12-14 | 2017-05-24 | 四川熹玥广告传媒有限公司 | Water-based pigment and preparation method of water-based pigment |
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