CN111876045A - High-temperature-resistant environment-friendly anticorrosive paint and preparation method thereof - Google Patents
High-temperature-resistant environment-friendly anticorrosive paint and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-temperature-resistant environment-friendly anticorrosive paint which comprises the following raw materials: 20-30 parts of organic silicon modified polypropylene resin, 1-3 parts of formaldehyde capture agent, 1-2 parts of modified carbon fiber, 1-2 parts of basic filler, 0.5-1 part of coupling agent, 0.5-1 part of defoaming agent and 30-50 parts of solvent.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a high-temperature-resistant environment-friendly anticorrosive coating and a preparation method thereof.
Background
The paint is a chemical mixed paint which can be firmly covered on the surface of an object and has the functions of protection, decoration, marking and other special purposes. The book "coating technology" is defined as follows: "paint" is a kind of material, which can be coated on the surface of object by different construction process to form firm-adhered, strong and continuous solid film. The film thus formed is generally called a coating film, also called a paint film or a coating. The coating belongs to organic chemical high molecular materials, and the formed coating belongs to a high molecular compound type. According to the modern popular classification of chemical products, the coating belongs to fine chemical products. The existing coating is gradually becoming a multifunctional engineering material, and is an important industry in the chemical industry.
Anticorrosive coatings are generally divided into conventional anticorrosive coatings and heavy anticorrosive coatings, and are an essential coating in paint coatings. The conventional anticorrosive paint plays a role in corrosion resistance on metal under common conditions, and the service life of nonferrous metal is protected; the heavy-duty anticorrosive coating is a type of anticorrosive coating which can be applied in a severe corrosion environment compared with a conventional anticorrosive coating and can achieve a longer protection period than the conventional anticorrosive coating.
In the prior art, most anticorrosive coatings contain volatile toxic and harmful gases such as formaldehyde and the like, are not high in temperature resistance, and have poor application effects in the fields of automobiles, ships and the like.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant environment-friendly anticorrosive paint and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
in the prior art, the high-temperature resistant anticorrosive paint product has the following defects: the first point is that the high-temperature resistant anticorrosive coating layer is completed by coordinating a double-coating or multi-coating system, for example, firstly constructing an anticorrosive primer and then constructing a temperature-resistant finish, and the construction operation procedure is complex; secondly, the conventional zinc silicate is adopted as the high-temperature-resistant anticorrosive primer, a two-component product is usually needed, and the components are strictly mixed according to the proportion, so that the construction is inconvenient; more zinc powder needs to be added at the same time to achieve a good electronic conduction effect, so that the product is easy to precipitate and the use cost is increased; and thirdly, the conventional high-temperature-resistant coating is thin in film formation during high-temperature construction, and the thin film layer brings about the adverse effect that the anticorrosion barrier of the coating is weak and the anticorrosion performance of the coating is poor.
The purpose of the invention can be realized by the following technical scheme:
a high-temperature-resistant environment-friendly anticorrosive paint comprises the following raw materials: 20-30 parts of organic silicon modified polypropylene resin, 1-3 parts of formaldehyde trapping agent, 1-2 parts of modified carbon fiber, 1-2 parts of basic filler, 0.5-1 part of coupling agent, 0.5-1 part of defoaming agent and 30-50 parts of solvent;
the preparation method of the high-temperature-resistant environment-friendly anticorrosive paint comprises the following steps:
firstly, adding the organosilicon modified polypropylene resin, a coupling agent and a solvent into a reaction kettle, and stirring for 30-60min under the conditions of the temperature of 70-80 ℃ and the rotation speed of 250-350r/min to obtain a prepolymer;
and secondly, adding modified carbon fiber and basic filler into the prepolymer obtained in the first step, stirring for 20-40min under the conditions that the temperature is kept at 70-80 ℃ and the rotating speed is 250-350r/min, then adding a defoaming agent and a formaldehyde trapping agent, and continuously stirring for 1-2h to obtain the high-temperature-resistant environment-friendly anticorrosive coating.
Further, the preparation method of the organic silicon modified polypropylene resin comprises the following steps: dissolving Benzoyl Peroxide (BPO) in toluene, stirring until the benzoyl peroxide is dissolved, adding a silane coupling agent A-151, stirring uniformly to prepare a mixed solution, adding polypropylene resin into a high-speed mixer, then adding the mixed solution, mixing for 10min at 105 ℃ to obtain a mixed material, and adding the mixed material into a single-screw extruder for granulation to obtain the organic silicon modified polypropylene resin, wherein the mass ratio of the polypropylene resin, the benzoyl peroxide, the silane coupling agent A-151 and the toluene is 100:0.2-0.4:2-10: 1-3.
Further, the formaldehyde trapping agent is selected from one or a mixture of two of 2-imidazolidone and 1- (2-hydroxyethyl) -2-imidazolidone.
Further, the preparation method of the modified carbon fiber comprises the following steps:
s1, adding 10-20 parts by weight of soybean protein powder, 1-2 parts by weight of alkaline protease and 30-40 parts by weight of water into a container, stirring at a constant temperature of 30-40 ℃ and at a rotation speed of 200-300r/min for 40-60min, heating to 80-90 ℃, dropwise adding a sodium hydroxide solution with a mass fraction of 20-26% to adjust the pH value to 7.6-7.9 to obtain an enzyme treatment solution, placing the enzyme treatment solution into a centrifuge for centrifugal separation, discarding the lower-layer precipitate, and collecting the supernatant;
s2, placing the carbon fibers and a sodium hydroxide solution with the mass fraction of 30-35% in a mixing kettle according to the mass ratio of 1:10-20, stirring, mixing and soaking for 3-5h at the temperature of 50-60 ℃ and the rotating speed of 400-600r/min to obtain a soaking solution;
s3, filtering the soak solution obtained in the step S2, collecting filter residues, placing the filter residues in liquid nitrogen for freezing to obtain filter residue blocks, placing the filter residue blocks in a ball mill for ball milling for 40-60min to obtain filter residue powder, washing the filter residue powder with glacial acetic acid until the washing liquid is neutral, then placing the washed filter residue powder in an oven, and drying at the temperature of 105-110 ℃ to constant weight to obtain primary treatment fibers;
s4, putting 10-20 parts by weight of supernatant in the step S1, 20-30 parts by weight of primary treatment fiber in the step S3 and 30-50 parts by weight of deionized water into a fermentation kettle, stirring, mixing and fermenting for 3-5 days at the temperature of 28-30 ℃ and the rotation speed of 300-400r/min, then dropwise adding a ferric nitrate solution with the mass fraction of 10-20% into the fermentation kettle, and stirring and mixing for 40-60min at the rotation speed of 400-600r/min to obtain mixed slurry;
s5, filtering the mixed slurry obtained in the step S4 to obtain a filter cake, washing the filter cake for 3-5 times by using deionized water, then placing the washed filter cake in an oven, drying the filter cake to constant weight at the temperature of 105-110 ℃ to obtain a dried filter cake, then placing the dried filter cake in a muffle furnace, filling inert gas into the furnace at the rate of 60-90mL/min, carrying out heat preservation treatment at the temperature of 1150 ℃ for 1-2h, and then cooling to room temperature along with the temperature of the furnace to obtain the modified fiber.
Further, the base filler comprises talcum powder with 300-600 meshes, diatomite with 300-600 meshes and hollow glass microspheres with the average particle size of 30 micrometers, and the mass ratio of the talcum powder to the diatomite to the hollow glass microspheres is 2-5: 7-10: 1.
further, the coupling agent is one of amino ethyl disiloxane, KH550, south Dai 42, south Dai 73 and KH602 amino terminated silane coupling agents.
Further, the defoaming agent is polyether modified silicone oil.
Further, the solvent is a mixture composed of butanediol glycidyl ether and xylene, and the mass ratio of the butanediol glycidyl ether to the xylene is 1: 1-9.
The invention has the beneficial effects that:
the invention adopts organosilicon modified polypropylene resin as a main material, improves the corrosion resistance and temperature resistance of the coating by adding other modification auxiliary agents, overcomes the problems of low water resistance, poor stain resistance, easy embrittlement at low temperature and easy stickiness at high temperature of the polypropylene resin, has Si-O bond energy far larger than C-C bond energy, low internal rotation energy barrier, large molecular molar volume, small surface energy, and good ultraviolet light resistance, weather resistance, stain resistance and high temperature resistance in the organosilicon modified polypropylene resin, leads the surface of carbon fiber to have defects by carrying out enzymolysis, alkaline leaching and frozen ball milling treatment on the carbon fiber, adopts saccharomycetes to adsorb and grow in pits on the surface of the carbon fiber in the fermentation process, utilizes active clusters on the surface of the saccharomycetes to adsorb polypeptide in protein powder, leads the polypeptide to be complexed with iron ions, and increases the conductivity of the carbon fiber, the invention utilizes the mixture of the organic silicon modified polypropylene resin, the modified carbon fiber, the basic filler and other additives to prepare the anticorrosive paint with better high temperature resistance, no pollution and corrosion resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A high-temperature-resistant environment-friendly anticorrosive paint comprises the following raw materials: 20 parts by weight of organic silicon modified polypropylene resin, 1 part by weight of formaldehyde trapping agent, 1 part by weight of modified carbon fiber, 1 part by weight of basic filler, 0.5 part by weight of coupling agent, 0.5 part by weight of defoaming agent and 30 parts by weight of solvent;
the preparation method of the high-temperature-resistant environment-friendly anticorrosive paint comprises the following steps:
firstly, adding the organic silicon modified polypropylene resin, a coupling agent and a solvent into a reaction kettle, and stirring for 30min at the temperature of 70 ℃ and the rotating speed of 250r/min to obtain a prepolymer;
and secondly, adding modified carbon fibers and basic filler into the prepolymer obtained in the first step, stirring for 20min under the conditions that the temperature is kept at 70 ℃ and the rotating speed is 250r/min, then adding a defoaming agent and a formaldehyde capture agent, and continuously stirring for 1-2h to obtain the high-temperature-resistant environment-friendly anticorrosive coating.
The preparation method of the organic silicon modified polypropylene resin comprises the following steps: dissolving Benzoyl Peroxide (BPO) in toluene, stirring until the benzoyl peroxide is dissolved, adding a silane coupling agent A-151, stirring uniformly to prepare a mixed solution, adding polypropylene resin into a high-speed mixer, then adding the mixed solution, mixing for 10min at 105 ℃ to obtain a mixed material, and adding the mixed material into a single-screw extruder for granulation to obtain the organic silicon modified polypropylene resin, wherein the mass ratio of the polypropylene resin, the benzoyl peroxide, the silane coupling agent A-151 and the toluene is 100:0.2-0.4:2-10: 1-3.
The formaldehyde capture agent is selected from one or a mixture of two of 2-imidazolidone and 1- (2-hydroxyethyl) -2-imidazolidone.
The preparation method of the modified carbon fiber comprises the following steps:
s1, adding 10 parts by weight of soybean protein powder, 1 part by weight of alkaline protease and 30 parts by weight of water into a container, stirring at a constant temperature for 40min at a temperature of 30 ℃ and a rotation speed of 200r/min, heating to 80 ℃, dropwise adding a sodium hydroxide solution with the mass fraction of 20% to adjust the pH value to 7.6 to obtain an enzyme treatment solution, placing the enzyme treatment solution into a centrifuge for centrifugal separation, discarding lower-layer precipitates, and collecting a supernatant;
s2, placing carbon fibers and a sodium hydroxide solution with the mass fraction of 30% in a mixing kettle according to the mass ratio of 1:10, stirring, mixing and soaking for 3 hours at the temperature of 50 ℃ and the rotating speed of 400r/min to obtain a soaking solution;
s3, filtering the soak solution obtained in the step S2, collecting filter residues, placing the filter residues in liquid nitrogen for freezing to obtain filter residue blocks, placing the filter residue blocks in a ball mill for ball milling for 40min to obtain filter residue powder, washing the filter residue powder with glacial acetic acid until a washing liquid is neutral, then placing the washed filter residue powder in an oven, and drying at the temperature of 105 ℃ to constant weight to obtain primary treatment fibers;
s4, putting 10 parts by weight of supernatant in the step S1, 20 parts by weight of primary treatment fiber in the step S3 and 30 parts by weight of deionized water into a fermentation kettle, stirring, mixing and fermenting for 3 days at the temperature of 28 ℃ and the rotating speed of 300r/min, then dropwise adding a ferric nitrate solution with the mass fraction of 10% into the fermentation kettle, and stirring and mixing for 40min at the rotating speed of 400r/min to obtain mixed slurry;
s5, filtering the mixed slurry obtained in the step S4 to obtain a filter cake, washing the filter cake for 3 times by using deionized water, then placing the washed filter cake in a drying oven, drying the filter cake to constant weight at the temperature of 105 ℃ to obtain a dried filter cake, then placing the dried filter cake in a muffle furnace, filling inert gas into the furnace at the rate of 60mL/min, carrying out heat preservation treatment at the temperature of 1150 ℃ for 1h, and then cooling to room temperature along with the furnace to obtain the modified fiber.
The basic filler comprises 300-mesh talcum powder, 300-mesh diatomite and hollow glass microspheres with the average particle size of 30 micrometers, and the mass ratio of the talcum powder to the diatomite to the hollow glass microspheres is 2: 7: 1.
the coupling agent is aminoethyl disiloxane.
The defoaming agent is polyether modified silicone oil.
The solvent is a mixture consisting of butanediol glycidyl ether and xylene, and the mass ratio of the butanediol glycidyl ether to the xylene is 1: 3.
Example 2
A high-temperature-resistant environment-friendly anticorrosive paint comprises the following raw materials: 25 parts by weight of organic silicon modified polypropylene resin, 2 parts by weight of formaldehyde trapping agent, 1.5 parts by weight of modified carbon fiber, 1.5 parts by weight of basic filler, 0.8 part by weight of coupling agent, 0.8 part by weight of defoaming agent and 40 parts by weight of solvent;
the preparation method of the high-temperature-resistant environment-friendly anticorrosive paint comprises the following steps:
firstly, adding the organic silicon modified polypropylene resin, a coupling agent and a solvent into a reaction kettle, and stirring for 40min at the temperature of 75 ℃ and the rotating speed of 300r/min to obtain a prepolymer;
and secondly, adding modified carbon fibers and basic filler into the prepolymer obtained in the first step, stirring for 30min under the conditions of keeping the temperature at 78 ℃ and the rotating speed at 300r/min, then adding a defoaming agent and a formaldehyde capture agent, and continuously stirring for 1.5h to obtain the high-temperature-resistant environment-friendly anticorrosive coating.
The preparation method of the organic silicon modified polypropylene resin comprises the following steps: dissolving Benzoyl Peroxide (BPO) in toluene, stirring until the benzoyl peroxide is dissolved, adding a silane coupling agent A-151, stirring uniformly to prepare a mixed solution, adding polypropylene resin into a high-speed mixer, then adding the mixed solution, mixing for 10min at 105 ℃ to obtain a mixed material, and adding the mixed material into a single-screw extruder for granulation to obtain the organic silicon modified polypropylene resin, wherein the mass ratio of the polypropylene resin to the benzoyl peroxide to the silane coupling agent A-151 to the toluene is 100:0.3:8: 2.
The formaldehyde capture agent is selected from one or a mixture of two of 2-imidazolidone and 1- (2-hydroxyethyl) -2-imidazolidone.
The preparation method of the modified carbon fiber comprises the following steps:
s1, adding 15 parts by weight of soybean protein powder, 1.5 parts by weight of alkaline protease and 35 parts by weight of water into a container, stirring at a constant temperature of 35 ℃ and a rotation speed of 250r/min for 50min, heating to 85 ℃, dropwise adding a 24% sodium hydroxide solution to adjust the pH value to 7.8 to obtain an enzyme treatment solution, placing the enzyme treatment solution into a centrifuge for centrifugal separation, discarding lower-layer precipitates, and collecting a supernatant;
s2, placing the carbon fibers and a sodium hydroxide solution with the mass fraction of 34% in a mixing kettle according to the mass ratio of 1:15, stirring, mixing and soaking for 4 hours at the temperature of 55 ℃ and the rotating speed of 500r/min to obtain a soaking solution;
s3, filtering the soak solution obtained in the step S2, collecting filter residues, placing the filter residues in liquid nitrogen for freezing to obtain filter residue blocks, placing the filter residue blocks in a ball mill for ball milling for 50min to obtain filter residue powder, washing the filter residue powder with glacial acetic acid until a washing liquid is neutral, then placing the washed filter residue powder in an oven, and drying at 108 ℃ to constant weight to obtain primary treatment fibers;
s4, placing 15 parts of supernatant in the step S1, 25 parts of primary treatment fiber in the step S3 and 40 parts of deionized water in a fermentation kettle, stirring, mixing and fermenting for 4 days at the temperature of 28 ℃ and the rotating speed of 350r/min, then dropwise adding 15% by mass of ferric nitrate solution into the fermentation kettle, and stirring and mixing for 50min at the rotating speed of 500r/min to obtain mixed slurry;
s5, filtering the mixed slurry obtained in the step S4 to obtain a filter cake, washing the filter cake for 4 times by using deionized water, then placing the washed filter cake in a drying oven, drying the filter cake to constant weight at the temperature of 108 ℃ to obtain a dried filter cake, then placing the dried filter cake in a muffle furnace, filling inert gas into the furnace at the rate of 80mL/min, carrying out heat preservation treatment at the temperature of 1150 ℃ for 1.5h, and then cooling to room temperature along with the furnace to obtain the modified fiber.
The basic filler comprises 400-mesh talcum powder, 400-mesh diatomite and hollow glass microspheres with the average particle size of 30 micrometers, and the mass ratio of the talcum powder to the diatomite to the hollow glass microspheres is 4: 8: 1.
the coupling agent is aminoethyl disiloxane.
The defoaming agent is polyether modified silicone oil.
The solvent is a mixture consisting of butanediol glycidyl ether and xylene, and the mass ratio of the butanediol glycidyl ether to the xylene is 1: 3.
Example 3
A high-temperature-resistant environment-friendly anticorrosive paint comprises the following raw materials: 30 parts by weight of organic silicon modified polypropylene resin, 3 parts by weight of formaldehyde trapping agent, 2 parts by weight of modified carbon fiber, 2 parts by weight of basic filler, 1 part by weight of coupling agent, 1 part by weight of defoaming agent and 50 parts by weight of solvent;
the preparation method of the high-temperature-resistant environment-friendly anticorrosive paint comprises the following steps:
firstly, adding the organic silicon modified polypropylene resin, a coupling agent and a solvent into a reaction kettle, and stirring for 60min at the temperature of 80 ℃ and the rotating speed of 350r/min to obtain a prepolymer;
and secondly, adding modified carbon fibers and basic fillers into the prepolymer obtained in the first step, stirring for 40min under the conditions of keeping the temperature at 80 ℃ and the rotating speed at 350r/min, then adding a defoaming agent and a formaldehyde capture agent, and continuously stirring for 2h to obtain the high-temperature-resistant environment-friendly anticorrosive coating.
The preparation method of the organic silicon modified polypropylene resin comprises the following steps: dissolving Benzoyl Peroxide (BPO) in toluene, stirring until the benzoyl peroxide is dissolved, adding a silane coupling agent A-151, stirring uniformly to prepare a mixed solution, adding polypropylene resin into a high-speed mixer, then adding the mixed solution, mixing for 10min at 105 ℃ to obtain a mixed material, and adding the mixed material into a single-screw extruder for granulation to obtain the organic silicon modified polypropylene resin, wherein the mass ratio of the polypropylene resin to the benzoyl peroxide to the silane coupling agent A-151 to the toluene is 100:0.4:10: 3.
The formaldehyde capture agent is selected from one or a mixture of two of 2-imidazolidone and 1- (2-hydroxyethyl) -2-imidazolidone.
The preparation method of the modified carbon fiber comprises the following steps:
s1, adding 20 parts by weight of soybean protein powder, 2 parts by weight of alkaline protease and 40 parts by weight of water into a container, stirring at a constant temperature for 60min at the temperature of 40 ℃ and the rotation speed of 300r/min, heating to 90 ℃, dropwise adding a 26% sodium hydroxide solution to adjust the pH value to 7.9 to obtain an enzyme treatment solution, placing the enzyme treatment solution into a centrifugal machine for centrifugal separation, discarding lower-layer precipitates, and collecting a supernatant;
s2, placing the carbon fibers and a sodium hydroxide solution with the mass fraction of 35% in a mixing kettle according to the mass ratio of 1:20, stirring, mixing and soaking for 5 hours at the temperature of 60 ℃ and the rotating speed of 600r/min to obtain a soaking solution;
s3, filtering the soak solution obtained in the step S2, collecting filter residues, placing the filter residues in liquid nitrogen for freezing to obtain filter residue blocks, placing the filter residue blocks in a ball mill for ball milling for 60min to obtain filter residue powder, washing the filter residue powder with glacial acetic acid until a washing liquid is neutral, then placing the washed filter residue powder in an oven, and drying at the temperature of 110 ℃ to constant weight to obtain primary treatment fibers;
s4, placing 20 parts by weight of supernatant in the step S1, 30 parts by weight of primary treatment fiber in the step S3 and 50 parts by weight of deionized water into a fermentation kettle, stirring, mixing and fermenting for 5 days at the temperature of 30 ℃ and the rotating speed of 400r/min, then dropwise adding a ferric nitrate solution with the mass fraction of 20% into the fermentation kettle, and stirring and mixing for 60min at the rotating speed of 600r/min to obtain mixed slurry;
s5, filtering the mixed slurry obtained in the step S4 to obtain a filter cake, washing the filter cake for 5 times by using deionized water, then placing the washed filter cake in a drying oven, drying the filter cake to constant weight at the temperature of 110 ℃ to obtain a dried filter cake, then placing the dried filter cake in a muffle furnace, filling inert gas into the furnace at the rate of 90mL/min, carrying out heat preservation treatment at the temperature of 1150 ℃ for 2 hours, and then cooling to room temperature along with the furnace to obtain the modified fiber.
The basic filler comprises 600-mesh talcum powder, 600-mesh diatomite and hollow glass microspheres with the average particle size of 30 micrometers, and the mass ratio of the talcum powder to the diatomite to the hollow glass microspheres is 5: 10: 1.
the coupling agent is aminoethyl disiloxane.
The defoaming agent is polyether modified silicone oil.
The solvent is a mixture consisting of butanediol glycidyl ether and xylene, and the mass ratio of the butanediol glycidyl ether to the xylene is 1: 9.
Comparative example 1
The organic silicon modified polypropylene resin in the raw materials of the embodiment 1 is replaced by polypropylene resin, and other raw materials and the preparation process are not changed.
Comparative example 2
The modified carbon fiber in the raw material of the embodiment 2 is removed, and other preparation processes are not changed.
Comparative example 3
The comparative example is a common anticorrosive paint on the market.
The anticorrosive coatings of examples 1 to 3 and comparative examples 1 to 3 were prepared into respective samples, and the samples were subjected to paint-related property tests. The test results are shown in table 1:
TABLE 1 paint Performance test results
As can be seen from the above table, the high temperature resistance and the acid and alkali resistance of the examples 1 to 3 are superior to those of the comparative examples 1 to 3, which shows that the anticorrosive coating prepared by the invention has excellent acid and alkali resistance and high temperature resistance, and has a relatively high market prospect.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (7)
1. The high-temperature-resistant environment-friendly anticorrosive paint is characterized by comprising the following raw materials: 20-30 parts of organic silicon modified polypropylene resin, 1-3 parts of formaldehyde trapping agent, 1-2 parts of modified carbon fiber, 1-2 parts of basic filler, 0.5-1 part of coupling agent, 0.5-1 part of defoaming agent and 30-50 parts of solvent.
2. The high-temperature-resistant environment-friendly anticorrosive paint as claimed in claim 1, characterized in that the preparation method of the organosilicon modified polypropylene resin comprises: dissolving Benzoyl Peroxide (BPO) in toluene, stirring until the benzoyl peroxide is dissolved, adding a silane coupling agent A-151, stirring uniformly to prepare a mixed solution, adding polypropylene resin into a high-speed mixer, then adding the mixed solution, mixing for 10min at 105 ℃ to obtain a mixed material, and adding the mixed material into a single-screw extruder for granulation to obtain the organic silicon modified polypropylene resin, wherein the mass ratio of the polypropylene resin, the benzoyl peroxide, the silane coupling agent A-151 and the toluene is 100:0.2-0.4:2-10: 1-3.
3. The high temperature resistant environment-friendly anticorrosive paint according to claim 1, characterized in that the formaldehyde scavenger is one or a mixture of two selected from 2-imidazolidinone and 1- (2-hydroxyethyl) -2-imidazolidinone.
4. The high-temperature-resistant environment-friendly anticorrosive paint as claimed in claim 1, wherein the preparation method of the modified carbon fiber comprises the following steps:
s1, adding 10-20 parts by weight of soybean protein powder, 1-2 parts by weight of alkaline protease and 30-40 parts by weight of water into a container, stirring at a constant temperature of 30-40 ℃ and at a rotation speed of 200-300r/min for 40-60min, heating to 80-90 ℃, dropwise adding a sodium hydroxide solution with a mass fraction of 20-26% to adjust the pH value to 7.6-7.9 to obtain an enzyme treatment solution, placing the enzyme treatment solution into a centrifuge for centrifugal separation, discarding the lower-layer precipitate, and collecting the supernatant;
s2, placing the carbon fibers and a sodium hydroxide solution with the mass fraction of 30-35% in a mixing kettle according to the mass ratio of 1:10-20, stirring, mixing and soaking for 3-5h at the temperature of 50-60 ℃ and the rotating speed of 400-600r/min to obtain a soaking solution;
s3, filtering the soak solution obtained in the step S2, collecting filter residues, placing the filter residues in liquid nitrogen for freezing to obtain filter residue blocks, placing the filter residue blocks in a ball mill for ball milling for 40-60min to obtain filter residue powder, washing the filter residue powder with glacial acetic acid until the washing liquid is neutral, then placing the washed filter residue powder in an oven, and drying at the temperature of 105-110 ℃ to constant weight to obtain primary treatment fibers;
s4, putting 10-20 parts by weight of supernatant in the step S1, 20-30 parts by weight of primary treatment fiber in the step S3 and 30-50 parts by weight of deionized water into a fermentation kettle, stirring, mixing and fermenting for 3-5 days at the temperature of 28-30 ℃ and the rotation speed of 300-400r/min, then dropwise adding a ferric nitrate solution with the mass fraction of 10-20% into the fermentation kettle, and stirring and mixing for 40-60min at the rotation speed of 400-600r/min to obtain mixed slurry;
s5, filtering the mixed slurry obtained in the step S4 to obtain a filter cake, washing the filter cake for 3-5 times by using deionized water, then placing the washed filter cake in an oven, drying the filter cake to constant weight at the temperature of 105-110 ℃ to obtain a dried filter cake, then placing the dried filter cake in a muffle furnace, filling inert gas into the furnace at the rate of 60-90mL/min, carrying out heat preservation treatment at the temperature of 1150 ℃ for 1-2h, and then cooling to room temperature along with the temperature of the furnace to obtain the modified fiber.
5. The high temperature resistant environment-friendly anticorrosive paint as claimed in claim 1, wherein the basic filler comprises talc powder of 300-600 mesh, diatomaceous earth of 300-600 mesh and hollow glass beads with average particle size of 30 μm, and the mass ratio of the talc powder to the diatomaceous earth to the hollow glass beads is 2-5: 7-10: 1.
6. the high temperature resistant environment-friendly anticorrosive paint as claimed in claim 1, wherein the coupling agent is one of amino ethyl disiloxane, KH550, south 42, south 73, KH602 amino terminated silane coupling agents; the defoaming agent is polyether modified silicone oil; the solvent is a mixture consisting of butanediol glycidyl ether and xylene, and the mass ratio of the butanediol glycidyl ether to the xylene is 1: 1-9.
7. The preparation method of the high temperature resistant environment-friendly anticorrosive paint as claimed in claim 1, characterized by comprising the following steps:
firstly, adding the organosilicon modified polypropylene resin, a coupling agent and a solvent into a reaction kettle, and stirring for 30-60min under the conditions of the temperature of 70-80 ℃ and the rotation speed of 250-350r/min to obtain a prepolymer;
and secondly, adding modified carbon fiber and basic filler into the prepolymer obtained in the first step, stirring for 20-40min under the conditions that the temperature is kept at 70-80 ℃ and the rotating speed is 250-350r/min, then adding a defoaming agent and a formaldehyde trapping agent, and continuously stirring for 1-2h to obtain the high-temperature-resistant environment-friendly anticorrosive coating.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113444191A (en) * | 2021-06-29 | 2021-09-28 | 成都硅宝科技股份有限公司 | Silane modified polyolefin film forming agent and preparation method and application thereof |
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| CN113444191B (en) * | 2021-06-29 | 2022-11-15 | 成都硅宝科技股份有限公司 | Silane modified polyolefin film forming agent and preparation method and application thereof |
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