CN110607109B - Environment-friendly anticorrosive paint and preparation method thereof - Google Patents
Environment-friendly anticorrosive paint and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses an environment-friendly anticorrosive paint which comprises the following components in parts by weight: 45-55 parts of titanium-based unsaturated polymer emulsion, 26-32 parts of silicon-containing monomer, 16-18 parts of initiator, 65-70 parts of ethanol, 2-3 parts of thickener, 6-7 parts of slow release filler, 1-2 parts of defoamer and 1-2 parts of flatting agent. The coating takes titanium-based unsaturated polymer emulsion as a reaction monomer to directly react with a silicon-containing monomer to prepare matrix resin, and each monomer in the titanium-based unsaturated polymer contains Ti-O bonds, so that the prepared titanium-based unsaturated polymer contains a large amount of Ti-O bonds, and a product generated after the titanium-based unsaturated polymer and the silicon-containing monomer are polymerized contains a large amount of Ti-O bonds and silane bonds, so that the prepared specific resin has high hydrophobic property and stain resistance, and no additional nano titanium dioxide is required to be added.
Description
Technical Field
The invention belongs to the field of paint preparation, and relates to an environment-friendly anticorrosive paint and a preparation method thereof.
Background
In the life, a large amount of resources and energy are wasted due to metal corrosion, in order to reduce the corrosion of metal materials, a layer of anticorrosive paint is usually coated on the surface of metal, and the anticorrosive performance is realized through the action of the paint, in the existing anticorrosive paint preparation process, nano-fillers such as nano-titanium dioxide are usually added into matrix resin to realize the anticorrosive performance, but the nano-fillers are easy to agglomerate to reduce the nano-effect, and the nano-fillers are directly and completely exposed in the coating and are easy to be rapidly reacted and deteriorated in the environment of stronger acid-base salt, so that the anticorrosive performance and other performances of the prepared paint are rapidly reduced or disappeared.
Disclosure of Invention
The invention aims to provide an environment-friendly anticorrosive paint and a preparation method thereof, the paint takes titanium-based unsaturated polymer emulsion as a reaction monomer to directly react with a silicon-containing monomer to prepare matrix resin, because each monomer in the titanium-based unsaturated polymer contains Ti-O bonds, the prepared titanium-based unsaturated polymer contains a large amount of Ti-O bonds, the product generated after the polymerization with the silicon-containing monomer contains a large amount of Ti-O bonds and silane bonds, further, the prepared specific resin has higher hydrophobic property and stain resistance without adding nano titanium dioxide, effectively solves the problem that nano fillers such as nano titanium dioxide are usually added into matrix resin in the preparation process of the prior anticorrosive coating to realize the anticorrosive property, but the nano-filler is easy to agglomerate to cause the reduction of the nano effect, thereby causing the reduction of the corrosion resistance and the pollution resistance.
And because the titanium-based unsaturated polymer is a hyperbranched structure, the prepared resin has a hyperbranched structure, wherein the slow-release filler can be uniformly dispersed in the coating, when the nano zinc oxide released by the slow-release filler can be uniformly dispersed in the filler, the polymerization of the nano zinc oxide is reduced, and meanwhile, the slow-release filler added in the coating can slowly release the nano zinc oxide, so that the nano zinc oxide is uniformly distributed in the coating on the surface of the workpiece all the time, the nano zinc oxide is uniformly dispersed and can not agglomerate, and even if the released nano zinc oxide is deformed in reaction, the filler can still continuously release the nano zinc oxide, so that the coating has a higher impedance value all the time and is in a corrosion-resistant state all the time
The purpose of the invention can be realized by the following technical scheme:
an environment-friendly anticorrosive paint comprises the following components in parts by weight:
45-55 parts of titanium-based unsaturated polymer emulsion, 26-32 parts of silicon-containing monomer, 16-18 parts of initiator, 65-70 parts of ethanol, 2-3 parts of thickener, 6-7 parts of slow release filler, 1-2 parts of defoamer and 1-2 parts of flatting agent;
the silicon-containing monomer is one of allyl trimethoxy silane or allyl triethoxy silane;
the initiator is one of benzoyl peroxide, azobisisobutyronitrile and ammonium persulfate;
the specific preparation process of the titanium-based unsaturated polymer emulsion comprises the following steps:
step 1: adding a mixed solvent into a reaction kettle, heating to 90-95 ℃ for reflux, then adding tetrabutyl titanate and triethanolamine into the reaction vessel, carrying out reflux reaction for 10-12h under a constant temperature condition, and then evaporating to remove the solvent to obtain a powder product, wherein the mixed solvent is glycerol and isopropanol according to a mass ratio of 1: 0.5, while adding tetrabutyl titanate in an amount of 30g per 100mL of the mixed solvent, and the ratio of tetrabutyl titanate to triethanolamine by mass is 1: 2, mixing and adding; because the outermost layer of the titanium ions has empty orbitals, and the nitrogen atoms in the triethanolamine can provide lone-pair electrons, so that the nitrogen atoms are used as ligands and can be complexed with the titanium ions, two triethanolamine are introduced into the prepared product, and then six alcoholic hydroxyl groups are introduced into the product and are in different directions;
step 2: adding the powder product prepared in the step 1 into ether, stirring and dissolving, heating to 230-240 ℃, refluxing, adding p-toluenesulfonic acid, stirring and reacting for 10-15min, adding maleic anhydride, and refluxing at constant temperature for 10-12 h; wherein 12-13mL of ether is added into each gram of maleic anhydride, 0.21-0.23g of p-toluenesulfonic acid is added, and 0.92-0.93g of powder product is added; the acid anhydride group in the maleic anhydride can react with the alcoholic hydroxyl group in the powder product, and the powder product contains the alcoholic hydroxyl group in six different directions, so that the powder product can be polymerized with the maleic anhydride in six different directions to generate the hyperbranched polymer; each monomer in the polymer contains Ti-O bonds, so that the prepared polymer contains a large amount of Ti-O bonds, and the hydrophobicity and the stain resistance of the polymer are improved;
and step 3: adding the product into a high-speed shearing emulsification tank, simultaneously adding polyoxyethylene sorbitan fatty acid ester and SP-80 into the high-speed shearing emulsification tank, and performing high-speed shearing emulsification for 1-2h to obtain a titanium-based unsaturated polymer emulsion; wherein the volume ratio of the polyoxyethylene sorbitan fatty acid ester to the SP-80 is 1: 0.82-0.83, and the volume ratio of the polyoxyethylene sorbitan fatty acid ester to the ether solution is 0.15-0.16: 1;
the preparation process of the slow-release filler is as follows: adding zinc acetate dihydrate and absolute ethyl alcohol into a reaction container at the same time, heating to 50-55 ℃, performing reflux reaction for 40-50min, adding the obtained product into a beaker, adding dried diatomite into the beaker, performing ultrasonic dispersion uniformly, adding lithium hydroxide into the beaker, performing ultrasonic reaction for 30-40min, filtering, heating the obtained solid to 450 ℃ at the speed of 5 ℃/min in a muffle furnace, and roasting for 30-32h to obtain a slow-release filler; wherein, 30 to 35mL of absolute ethyl alcohol is added into zinc acetate dihydrate per gram, 0.13 to 0.14g of lithium hydroxide is added, and 4 to 4.2g of diatomite is added; because the diatomite contains a large number of pore channel structures, under the ultrasonic action, a mixture solution of zinc acetate and absolute ethyl alcohol enters the pore channels of the diatomite, reacts with lithium hydroxide in the pore channels to generate gel, and is roasted at high temperature to generate nano zinc oxide which is loaded inside the pore channels of the diatomite; after the coating is coated, the outer coating layer has higher waterproof performance, can effectively prevent water from contacting the surface of the coated workpiece, simultaneously slowly releases nano zinc oxide by slowly releasing the filler, the nano zinc oxide has higher impedance value, can realize higher corrosion resistance, but is easy to agglomerate, the impedance value of the agglomerated workpiece is reduced, further the corrosion resistance of the agglomerated workpiece is reduced, and the nano zinc oxide can react or agglomerate when the workpiece is soaked for a long time or is in an environment with higher pH value for a long time, further the impedance value of the workpiece is reduced, the corrosion resistance is reduced, but the nano zinc oxide is uniformly distributed in the coating on the surface of the workpiece all the time by slowly releasing the nano zinc oxide, the dispersion is uniform, the agglomeration cannot occur, and even if the released nano zinc oxide reacts and deforms, the filler can continuously release the nano zinc oxide, so that the coating has higher impedance value all the time, is always in a corrosion-resistant state;
the specific preparation process of the environment-friendly anticorrosive paint is as follows:
adding the titanium-based unsaturated polymer emulsion and ethanol into a reaction vessel simultaneously, introducing nitrogen into the reaction vessel for 20-30min, adding an initiator into the reaction vessel, uniformly mixing, heating to 80-90 ℃, dropwise adding a silicon-containing monomer into the reaction vessel, reacting for 1-1.5h after complete dropwise addition, heating to 120-130 ℃, stirring and reacting for 2-3h, cooling to room temperature, discharging the obtained product solution, pouring the product solution into a stirring kettle, sequentially adding a slow-release filler, a leveling agent, a defoaming agent and a thickening agent into the stirring kettle, and mixing and stirring for 20-30min to obtain the environment-friendly anticorrosive paint; the titanium-based unsaturated polymer emulsion contains unsaturated olefin groups, and the silicon-containing monomer also contains olefin groups, and free radical polymerization reaction is carried out under the action of an initiator to generate a polymer, the generated polymer contains a large number of Ti-O bonds, so that the hydrophobicity and the stain resistance of the coating are improved, the coating has a self-cleaning effect after being coated on the surface of a workpiece, the number of times of wiping the workpiece by using an organic solvent is reduced, the environmental protection performance is realized, and a large number of siloxane bonds are introduced into the coating, so that the hydrophobicity of the coating is improved, the high heat resistance of the coating is realized, the outer layer of the prepared coating has high waterproof performance, and when an external waterproof layer is damaged, the nano zinc oxide released from the inner layer has a high impedance value, and the corrosion resistance of the coating is further improved; meanwhile, because the titanium-based unsaturated polymer is of a branched structure, the titanium-based unsaturated polymer can be well and uniformly dispersed with a silicon-containing monomer, and the load is uniform, so that the content of siloxane bonds in the prepared coating is uniform, and the thermal stability of the coating is uniform.
The invention has the beneficial effects that:
1. the coating prepared by the invention is prepared by directly reacting the titanium-based unsaturated polymer emulsion serving as a reaction monomer with a silicon-containing monomer to prepare matrix resin, and each monomer in the titanium-based unsaturated polymer contains Ti-O bonds, so that the prepared titanium-based unsaturated polymer contains a large amount of Ti-O bonds, and a product generated after the titanium-based unsaturated polymer is polymerized with the silicon-containing monomer contains a large amount of Ti-O bonds and silane bonds, so that the prepared specific resin has high hydrophobic property and stain resistance, and nano titanium dioxide is not required to be added additionally, thereby effectively solving the problems that nano fillers such as nano titanium dioxide are usually added into the matrix resin in the preparation process of the existing anticorrosive coating to realize the anticorrosive property, but the nano fillers are easy to agglomerate to reduce the nano effect, and further the anticorrosive and stain resistance of the coating are reduced.
2. The titanium-based unsaturated polymer prepared by the invention is of a hyperbranched structure, so that the prepared resin has the hyperbranched structure, the slow-release filler added in the coating can be uniformly dispersed in the coating, when the nano zinc oxide released by the slow-release filler can be uniformly dispersed in the filler, the polymerization of the nano zinc oxide is reduced, meanwhile, the slow-release filler added in the coating can slowly release the nano zinc oxide, the nano zinc oxide is uniformly distributed in the coating on the surface of a workpiece all the time, the nano zinc oxide is uniformly dispersed and can not agglomerate, and even if the released nano zinc oxide is deformed by reaction, the filler can continuously release the nano zinc oxide, so that the coating has a higher impedance value all the time and is in a corrosion-resistant state all the time, thereby solving the problem that the nano fillers such as nano titanium dioxide and the like are usually added in the matrix resin in the preparation process of the existing anticorrosive coating, the nano filler is directly and completely exposed in the coating, and is easy to be rapidly reacted and deteriorated in the environment with stronger acid-base salt, so that the corrosion resistance and other properties of the prepared coating are rapidly reduced or disappeared.
Detailed Description
Example 1:
the specific preparation process of the titanium-based unsaturated polymer emulsion comprises the following steps:
step 1: mixing glycerol and isopropanol according to a mass ratio of 1: 0.5, adding 100mL of the mixed solvent into a reaction kettle, heating to 90-95 ℃ for reflux, adding 30g of tetrabutyl titanate and 26.3g of triethanolamine into the reaction vessel, carrying out reflux reaction for 10-12h at constant temperature, and evaporating to remove the solvent to obtain a powder product;
step 2: adding 9.2g of the powder product prepared in the step 1 into 120mL of diethyl ether, stirring and dissolving, heating to 230-240 ℃ for reflux, adding 2.1g of p-toluenesulfonic acid, stirring and reacting for 10-15min, adding 10g of maleic anhydride, and carrying out constant-temperature reflux reaction for 10-12 h;
and step 3: adding the product into a high-speed shearing emulsification tank, simultaneously adding 18mL of polyoxyethylene sorbitan fatty acid ester and 14.4gSP-80, and carrying out high-speed shearing emulsification for 1-2h to obtain the titanium-based unsaturated polymer emulsion.
Example 2:
the preparation process of the slow-release filler is as follows: adding 1g of zinc acetate dihydrate and 30mL of absolute ethyl alcohol into a reaction container at the same time, heating to 50-55 ℃, carrying out reflux reaction for 40-50min, adding the obtained product into a beaker, adding 4g of dried diatomite into the beaker, adding 0.13g of lithium hydroxide into the beaker after uniform ultrasonic dispersion, carrying out ultrasonic reaction for 30-40min, then filtering, heating the obtained solid in a muffle furnace at the speed of 5 ℃/min to 450 ℃, and roasting for 30-32h to obtain the slow-release filler.
Example 3:
the specific preparation process of the environment-friendly anticorrosive paint is as follows:
adding 450g of the titanium-based unsaturated polymer emulsion prepared in the example 1 and 650g of ethanol into a reaction vessel at the same time, introducing nitrogen for 20-30min, then adding 160g of benzoyl peroxide into the reaction vessel, uniformly mixing, heating to 80-90 ℃, then dropwise adding 260g of allyltrimethoxysilane, reacting for 1-1.5h after complete dropwise addition, then heating to 120-130 ℃, stirring and reacting for 2-3h, cooling to room temperature, discharging the obtained product solution, then pouring into a stirring kettle, then sequentially adding 60g of the slow release filler prepared in the example 2, 10g of the leveling agent, 10g of the defoaming agent and 2g of the thickening agent into the stirring kettle, and mixing and stirring for 20-30min to obtain the environment-friendly anticorrosive coating.
Example 4:
the specific preparation process of the environment-friendly anticorrosive paint is as follows:
adding 450g of the titanium-based unsaturated polymer emulsion prepared in the example 1 and 650g of ethanol into a reaction vessel at the same time, introducing nitrogen into the reaction vessel for 20-30min, then adding 160g of benzoyl peroxide into the reaction vessel, uniformly mixing, heating to 80-90 ℃, then dropwise adding 260g of allyl trimethoxy silane into the reaction vessel, reacting for 1-1.5h after complete dropwise addition, then heating to 120-130 ℃, stirring and reacting for 2-3h, cooling to room temperature, discharging the obtained product solution, then pouring the product solution into a stirring kettle, then sequentially adding 8g of nano zinc oxide, 10g of a flatting agent, 10g of a defoaming agent and 2g of a thickening agent into the stirring kettle, mixing and stirring for 20-30min, and obtaining the environment-friendly anticorrosive coating.
Example 5
The specific preparation process of the environment-friendly anticorrosive paint is as follows: and adding 12g of nano titanium dioxide, 60g of the slow release filler prepared in the example 2, 10g of the leveling agent, 10g of the defoaming agent and 2g of the thickening agent into 600g of the acrylic resin, and mixing and stirring for 20-30min to obtain the environment-friendly anticorrosive paint.
Example 6:
the specific preparation process of the environment-friendly anticorrosive paint is as follows: adding 12g of nano titanium dioxide, 8g of nano zinc oxide, 10g of flatting agent, 10g of defoaming agent and 2g of thickening agent into 600g of acrylic resin, and mixing and stirring for 20-30min to obtain the environment-friendly anticorrosive paint.
Example 7:
the anticorrosive coatings prepared in examples 3 to 6 were uniformly coated on the surfaces of steel plates of the same material, after completely curing, they were simultaneously put into a salt spray box for different times and then taken out, and the change of the coating on the surface of the steel plate was observed, and the results are shown in table 1:
TABLE 1 anticorrosive property measurement results of anticorrosive coatings in different medium environments
As can be seen from Table 1, the coating prepared in example 3 has high corrosion resistance in acidic environment and salt, and can continuously resist corrosion for 720 hours, because the matrix resin used in the coating prepared by the invention is prepared by radical polymerization of the titanium-based unsaturated polymer and the silicon-containing monomer, because each monomer in the titanium-based unsaturated polymer contains Ti-O bonds, the prepared titanium-based unsaturated polymer contains a large amount of Ti-O bonds, and the product generated after polymerization with the silicon-containing monomer contains a large amount of Ti-O bonds and silane bonds, the hydrophobic property of the resin is further improved, and because the titanium-based unsaturated polymer is a hyperbranched structure, the prepared resin has a hyperbranched structure, wherein the slow-release filler can be uniformly dispersed in the coating, and when the nano zinc oxide released by the slow-release filler can be uniformly dispersed in the filler, the polymerization of the nano zinc oxide is reduced, meanwhile, the slow-release filler added in the coating can slowly release the nano zinc oxide, so that the nano zinc oxide is uniformly distributed in the coating on the surface of the workpiece all the time, the nano zinc oxide is uniformly dispersed and cannot agglomerate, and even if the released nano zinc oxide is deformed by reaction, the filler can still continuously release the nano zinc oxide, so that the coating has a high impedance value all the time and is in a corrosion-resistant state all the time; in the embodiment 4, the nano zinc oxide is directly added, so that the nano zinc oxide is easy to agglomerate, the impedance value of the coating is reduced, and the corrosion resistance is reduced; meanwhile, in the embodiment 5, the acrylic resin is directly used as the matrix, so that the hydrophobic property is reduced, and the filler cannot be uniformly dispersed, so that the released nano zinc oxide is easy to agglomerate, and the corrosion resistance of the nano zinc oxide is reduced; in example 6, the nano zinc oxide and the nano titanium dioxide are directly added to the resin, and the nano material is easy to agglomerate, so that the overall water resistance and the corrosion resistance of the coating are reduced.
Example 8:
uniformly coating the surface of a watch glass with the anticorrosive paint prepared in the examples 3-6, curing at 70 ℃ for 6-7h, dripping carbon ink on the surface of the coating, standing at room temperature for 48h, wiping with a cotton ball, and investigating the stain resistance of the coating, wherein the stain resistance of the coating is classified into 5 grades, wherein the 0 grade represents no effect, the 1 grade represents a certain effect, but the apparent trace is remained after the alcohol wiping; 2 represents that the alcohol has a lighter trace after being wiped; 3, the mark is very shallow after being washed by clean water, and no mark exists after being wiped by alcohol; 4 represents no trace after washing with clear water; the results of the stain resistance test for the coatings prepared in examples 3-6 are shown in table 2:
TABLE 2 stain resistance of anticorrosive coatings prepared in examples 3-6
| Example 3 | Example 4 | Example 5 | Examples6 | |
| Stain resistance rating | 4 stage | 4 stage | Stage 2 | Stage 2 |
As can be seen from table 2, the anticorrosive coatings prepared in examples 3 and 4 have high stain resistance, and have increased stain resistance and uniform stain resistance due to the fact that the matrix resin used in the coatings itself contains a large amount of Ti — O bonds, while examples 5 and 6 directly add nano titanium dioxide into the resin, and since the nano titanium dioxide is easily agglomerated due to the direct addition of the nano titanium dioxide, the nano effect is reduced, and the stain resistance of the coating is further reduced, so that the nano titanium dioxide is partially uniformly dispersed, and the stain resistance of the coating without the nano titanium dioxide is lower.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The environment-friendly anticorrosive paint is characterized by comprising the following components in parts by weight:
45-55 parts of titanium-based unsaturated polymer emulsion, 26-32 parts of silicon-containing monomer, 16-18 parts of initiator, 65-70 parts of ethanol, 2-3 parts of thickener, 6-7 parts of slow release filler, 1-2 parts of defoamer and 1-2 parts of flatting agent;
the silicon-containing monomer is one of allyl trimethoxy silane or allyl triethoxy silane;
the specific preparation process of the titanium-based unsaturated polymer emulsion comprises the following steps:
step 1: adding the mixed solvent into a reaction kettle, heating to 90-95 ℃ for reflux, then adding tetrabutyl titanate and triethanolamine into the reaction vessel, carrying out reflux reaction for 10-12h under the constant temperature condition, and then evaporating to remove the solvent to obtain a powder product;
step 2: adding the powder product prepared in the step 1 into ether, stirring and dissolving, heating to 230-240 ℃, refluxing, adding p-toluenesulfonic acid, stirring and reacting for 10-15min, adding maleic anhydride, and refluxing at constant temperature for 10-12 h;
and step 3: adding the product into a high-speed shearing emulsification tank, simultaneously adding polyoxyethylene sorbitan fatty acid ester and SP-80 into the high-speed shearing emulsification tank, and performing high-speed shearing emulsification for 1-2h to obtain a titanium-based unsaturated polymer emulsion;
the preparation process of the slow-release filler is as follows: adding zinc acetate dihydrate and absolute ethyl alcohol into a reaction container at the same time, heating to 50-55 ℃, performing reflux reaction for 40-50min, adding the obtained product into a beaker, adding dried diatomite into the beaker, performing ultrasonic dispersion uniformly, adding lithium hydroxide into the beaker, performing ultrasonic reaction for 30-40min, filtering, heating the obtained solid to 450 ℃ at the speed of 5 ℃/min in a muffle furnace, and roasting for 30-32h to obtain a slow-release filler; adding 30-35mL of absolute ethyl alcohol into each gram of zinc acetate dihydrate, adding 0.13-0.14g of lithium hydroxide, and adding 4-4.2g of diatomite.
2. The environment-friendly anticorrosive paint according to claim 1, wherein the initiator is one of benzoyl peroxide, azobisisobutyronitrile and ammonium persulfate.
3. The environment-friendly anticorrosive paint as claimed in claim 1, wherein the mixed solvent in the step 1 is glycerol and isopropanol in a mass ratio of 1: 0.5, while adding tetrabutyl titanate in an amount of 30g per 100mL of the mixed solvent, and the ratio of tetrabutyl titanate to triethanolamine by mass is 1: 2 are mixed and added.
4. The environment-friendly anticorrosive paint as claimed in claim 1, wherein in step 2, 12-13mL of diethyl ether, 0.21-0.23g of p-toluenesulfonic acid and 0.92-0.93g of powder product are added to each gram of maleic anhydride.
5. The environment-friendly anticorrosive paint as claimed in claim 1, wherein the volume ratio of polyoxyethylene sorbitan fatty acid ester to SP-80 in step 3 is 1: 0.82-0.83, and the volume ratio of polyoxyethylene sorbitan fatty acid ester to ether is 0.15-0.16: 1.
6. the environment-friendly anticorrosive coating as claimed in claim 1, wherein the environment-friendly anticorrosive coating is prepared by the following specific steps: adding the titanium-based unsaturated polymer emulsion and ethanol into a reaction vessel simultaneously, introducing nitrogen into the reaction vessel for 20-30min, adding an initiator into the reaction vessel, uniformly mixing, heating to 80-90 ℃, dropwise adding a silicon-containing monomer into the reaction vessel, reacting for 1-1.5h after complete dropwise addition, heating to 120-130 ℃, stirring and reacting for 2-3h, cooling to room temperature, discharging the obtained product solution, pouring the product solution into a stirring kettle, sequentially adding a slow-release filler, a leveling agent, a defoaming agent and a thickening agent into the stirring kettle, and mixing and stirring for 20-30min to obtain the environment-friendly anticorrosive paint.
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