CN113999574A - Fluorine-containing anticorrosive material and preparation method thereof - Google Patents
Fluorine-containing anticorrosive material and preparation method thereof Download PDFInfo
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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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/06—Polyethene
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/038—Anticorrosion agents
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- 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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- C08K2201/011—Nanostructured additives
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Abstract
The invention provides a fluorine-containing anticorrosive material and a preparation method thereof, which comprises the steps of firstly, carrying out graft modification on bisphenol A type epoxy resin by trifluoroethyl methacrylate to obtain modified epoxy resin; then mixing the high-density polyethylene, the modified epoxy resin, the polytetrafluoroethylene reclaimed material and the nano zirconia fiber to obtain a mixed material; and then, extruding the mixture into strips, cutting and granulating to obtain particles, then carrying out modification treatment on the particles by using refined naphthalene-sodium treatment liquid to obtain modified particles, and crushing to obtain the modified particles. The fluorine-containing anticorrosive material obtained by the invention has good adhesive force and anticorrosive effect, and has good popularization and application prospects.
Description
Technical Field
The invention relates to the technical field of novel anticorrosive materials, in particular to a fluorine-containing anticorrosive material and a preparation method thereof.
Background
With the development of economy, the anticorrosive requirements of the industries such as chemical industry, petroleum, ships, power plants and the like are higher and higher, so that higher requirements are put on anticorrosive materials, and the requirements on the anticorrosive materials are naturally higher in the fields with complex working conditions. For example, in a pipeline for discharging flue gas, because the temperature of the flue gas is often high, the corresponding anticorrosive material is naturally required to have certain heat resistance, and meanwhile, the temperature change of the flue gas is large, so that the anticorrosive material is required to normally function under the condition of alternating cold and heat, and in addition, the acid and alkali resistance is also a conventional requirement for the pipeline.
Polytetrafluoroethylene, which has a good corrosion prevention effect, is generally used as a lining material of a pipeline, so that corrosion prevention is realized. Patent CN109822930B discloses a production process of fluoroplastic pump fluorine lining pipeline, which comprises the following steps: s1, processing of the die: manufacturing a tire and a mold which are adaptive to the shape and the size of a product according to the shape and the size of the pump pipeline; s2, processing the pipeline: feeding the polytetrafluoroethylene powdery raw material into an extruder, and extruding the raw material into a tubular shape through a die; s3, spraying: spraying composite glue on the outer surface of the tubular polytetrafluoroethylene through a spraying device to enable the glue on the outer surface of the tubular polytetrafluoroethylene to be uniformly attached; s4, compounding: the pipe joint part on the pump is placed on a heating device for local heating at the temperature of 150-170 ℃, then the tubular polytetrafluoroethylene is inserted into the pipe joint for fusion and compounding, and the temperature is continuously raised to 200-230 ℃. The composite process that this patent technique relates to requires highly, and expend with heat and contract with cold is big, yielding, resistant negative pressure performance is poor, and then influences anticorrosive effect.
Compare with lining fluorine equipment, direct coating anticorrosive coating has bigger operation convenience undoubtedly, but directly uses polytetrafluoroethylene to make anticorrosive coating cost higher, and in addition, polytetrafluoroethylene's viscosity is high, and the mobility is poor, and the spraying effect is poor, drops easily, influences anticorrosive effect.
Disclosure of Invention
The invention aims to provide a fluorine-containing anticorrosive material and a preparation method thereof, which have good adhesive force and excellent anticorrosive effect.
In order to achieve the purpose, the invention is realized by the following scheme:
a preparation method of a fluorine-containing anticorrosive material comprises the following specific steps:
(1) firstly, bisphenol A epoxy resin is grafted and modified by trifluoroethyl methacrylate to obtain modified epoxy resin;
(2) then mixing the high-density polyethylene, the modified epoxy resin, the polytetrafluoroethylene reclaimed material and the nano zirconia fiber to obtain a mixed material;
(3) and then, the mixture is extruded into strips, cut and granulated to obtain particles, the particles are modified by refined naphthalene-sodium treatment liquid to obtain modified particles, and the modified particles are crushed to 80-100 meshes to obtain the powdery fluorine-containing anticorrosive material.
Preferably, the specific method of step (1) is as follows, in parts by weight:
(A) stirring and uniformly mixing 10-12 parts of bisphenol A epoxy resin and 22-25 parts of butyl acetate, stirring and heating to 105-115 ℃, preserving heat and stirring for 10-15 minutes, then slowly dropwise adding 2-3 parts of premixed solution consisting of trifluoroethyl methacrylate and azobisisobutyronitrile while stirring, carrying out free radical polymerization, and preserving heat and stirring for 50-60 minutes after dropwise adding is finished;
(B) and continuously and slowly dripping 2-3 parts of the premixed solution, preserving heat and stirring for 80-90 minutes after dripping is finished, and performing post-treatment to obtain the fluorine-containing acrylate grafted modified epoxy resin.
Further preferably, in the premix, the mass ratio of trifluoroethyl methacrylate to azobisisobutyronitrile is 2: 1.
further preferably, the dropping rate of the premixed liquid is 3-5 mL/min.
Further preferably, in the step (B), the post-treatment is specifically performed by: firstly, vacuumizing to remove a solvent to obtain a reaction product, then adding n-butyl alcohol with the same mass into the reaction product, carrying out 300-400W ultrasonic oscillation for 5-8 minutes, and carrying out suction filtration to obtain the product.
Preferably, in the step (2), the mass ratio of the high-density polyethylene to the modified epoxy resin to the polytetrafluoroethylene reclaimed material to the nano zirconia fiber is 40-50: 25-35: 5-6: 0.5 to 0.8.
Preferably, in the step (2), the density of the high-density polyethylene is 0.95 to 0.97g/cm3The melt flow rate is 6-9 g/10 min.
Preferably, in the step (2), the mixing process conditions are as follows: mixing at 45-55 ℃ for 40-50 minutes.
Preferably, in the step (3), the specific method of modification treatment is as follows: adding 5-7 parts of particles into 10-12 parts of refined naphthalene-sodium treatment solution, carrying out 300-400W ultrasonic oscillation for 15-25 minutes, filtering, and drying to obtain modified particles.
Preferably, in the step (3), the refined naphthalene-sodium treatment solution is prepared by the following method in parts by weight: and (3) under the protection of nitrogen and under the drying condition, uniformly mixing 0.3-0.5 part of metal sodium, 7-8 parts of refined naphthalene and 90-92 parts of tetrahydrofuran to obtain the refined naphthalene-sodium treatment solution.
Preferably, in the step (3), an extruder is used for extrusion operation, and the working temperature of the extruder is 220-240 ℃.
Preferably, in the step (3), the particle size of the obtained particles is controlled to be 1-2 mm by cutting and granulating.
The fluorine-containing anticorrosive material is obtained by the preparation method.
Compared with the prior art, the invention has the beneficial effects that:
(1) firstly, bisphenol A type epoxy resin is grafted and modified by trifluoroethyl methacrylate to obtain modified epoxy resin; then mixing the high-density polyethylene, the modified epoxy resin, the polytetrafluoroethylene reclaimed material and the nano zirconia fiber to obtain a mixed material; and then, the mixture is extruded into strips, cut and granulated to obtain particles, the particles are modified by refined naphthalene-sodium treatment liquid to obtain modified particles, and the modified particles are crushed to obtain the powdery fluorine-containing anticorrosive material. The fluorine-containing anticorrosive material obtained by the invention has good adhesive force and anticorrosive effect, and has good popularization and application prospects.
(2) The main raw materials of the invention comprise high-density polyethylene, modified epoxy resin, polytetrafluoroethylene reclaimed material and nano zirconia fiber, and the crosslinking is sufficient, thereby ensuring the basic anticorrosion effect and heat resistance. The modified epoxy resin is obtained by grafting and modifying bisphenol A epoxy resin with trifluoroethyl methacrylate, introduces fluorine-containing groups on the basis of improving the adhesive force of the product by using the epoxy resin, has good compatibility with polytetrafluoroethylene reworked materials, and further improves the adhesive force, the anticorrosion effect and the heat resistance of the product.
(3) The invention uses the polytetrafluoroethylene reclaimed material, realizes the recycling of resources and conforms to the production concept of environmental protection. The addition of the nano zirconia fiber is beneficial to further improvement of the anticorrosion effect and the heat resistance, the dosage is less, and the adhesive force of the product is not influenced. The particles obtained after mixing are modified by refined naphthalene-sodium treatment liquid, and polar groups such as hydroxyl, carbonyl and the like can be introduced to the surfaces of the particles, so that the surface performance of the product is improved, the adhesive force is enhanced, and the anti-corrosion effect and the heat resistance are ensured to be exerted.
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.
The nano zirconia fiber related to the invention is purchased from Sichuan research science and technology Limited.
Example 1
A preparation method of a fluorine-containing anticorrosive material comprises the following specific steps:
(1) firstly, bisphenol A epoxy resin is grafted and modified by trifluoroethyl methacrylate to obtain modified epoxy resin;
(2) then mixing 4kg of high-density polyethylene, 3.5kg of modified epoxy resin, 0.5kg of polytetrafluoroethylene reclaimed material and 0.08kg of nano zirconia fiber at 45 ℃ for 50 minutes to obtain a mixed material;
(3) and then, the mixture is extruded and pulled into strips, cut and granulated to obtain particles with the particle size of 1mm, then 0.7kg of the particles are added into 1kg of refined naphthalene-sodium treatment liquid, the mixture is subjected to 400W ultrasonic oscillation for 15 minutes, filtered and dried to obtain modified particles, and the modified particles are crushed to 100 meshes to obtain the powdery fluorine-containing anticorrosive material.
The specific method of the step (1) is as follows:
(A) firstly, 1kg of bisphenol A epoxy resin and 2.5kg of butyl acetate are stirred and mixed uniformly, the mixture is stirred and heated to 105 ℃, the temperature is kept and the stirring is carried out for 15 minutes, then 0.3kg of premixed solution (the premixed solution is obtained by mixing trifluoroethyl methacrylate and azobisisobutyronitrile according to the mass ratio of 2: 1) is added dropwise at the speed of 3mL/min while the stirring is carried out, the free radical polymerization reaction is carried out, and the heat is kept and the stirring is carried out for 50 minutes after the dropwise addition is finished;
(B) and continuously dropwise adding 0.2kg of the premixed solution at the speed of 5mL/min, keeping the temperature and stirring for 90 minutes after dropwise adding, vacuumizing to remove the solvent to obtain a reaction product, adding n-butanol with the same mass into the reaction product, carrying out 300W ultrasonic oscillation for 8 minutes, and carrying out suction filtration to obtain the fluorine-containing acrylate graft modified epoxy resin.
In the step (2), the density of the high-density polyethylene is 0.95g/cm3The melt flow rate was 9g/10 min.
In the step (3), the preparation method of the refined naphthalene-sodium treatment solution comprises the following steps: under the protection of nitrogen and under the drying condition, 0.03kg of metal sodium, 0.8kg of refined naphthalene and 9kg of tetrahydrofuran are uniformly mixed to obtain the refined naphthalene-sodium treatment solution.
In the step (3), an extruder is used for carrying out extrusion operation, and the working temperature of the extruder is 240 ℃.
Example 2
A preparation method of a fluorine-containing anticorrosive material comprises the following specific steps:
(1) firstly, bisphenol A epoxy resin is grafted and modified by trifluoroethyl methacrylate to obtain modified epoxy resin;
(2) then mixing 5kg of high-density polyethylene, 2.5kg of modified epoxy resin, 0.6kg of polytetrafluoroethylene reclaimed material and 0.05kg of nano zirconia fiber at 55 ℃ for 40 minutes to obtain a mixed material;
(3) and then, the mixture is extruded and pulled into strips, cut and granulated to obtain particles with the particle size of 2mm, then 0.5kg of the particles are added into 1.2kg of refined naphthalene-sodium treatment liquid, 300W ultrasonic oscillation is carried out for 25 minutes, filtering and drying are carried out to obtain modified particles, and the modified particles are crushed to 80 meshes to obtain the powdery fluorine-containing anticorrosive material.
The specific method of the step (1) is as follows:
(A) firstly, uniformly stirring and mixing 1.2kg of bisphenol A epoxy resin and 2.2kg of butyl acetate, stirring and heating to 115 ℃, preserving heat and stirring for 10 minutes, then dropwise adding 0.2kg of premixed solution (the premixed solution is obtained by mixing trifluoroethyl methacrylate and azobisisobutyronitrile according to the mass ratio of 2: 1) at the speed of 5mL/min while stirring, carrying out free radical polymerization, and preserving heat and stirring for 60 minutes after dropwise adding;
(B) and continuously dropwise adding 0.3kg of the premixed solution at the rate of 3mL/min, keeping the temperature and stirring for 80 minutes after dropwise adding, vacuumizing to remove the solvent to obtain a reaction product, adding n-butanol with the same mass into the reaction product, carrying out 400W ultrasonic oscillation for 5 minutes, and carrying out suction filtration to obtain the fluorine-containing acrylate graft modified epoxy resin.
In the step (2), the density of the high-density polyethylene is 0.97g/cm3The melt flow rate was 6g/10 min.
In the step (3), the preparation method of the refined naphthalene-sodium treatment solution comprises the following steps: under the protection of nitrogen and under the drying condition, 0.05kg of metal sodium, 0.7kg of refined naphthalene and 9.2kg of tetrahydrofuran are uniformly mixed to obtain the refined naphthalene-sodium treatment solution.
In the step (3), an extruder is used for extrusion operation, and the working temperature of the extruder is 220 ℃.
Example 3
A preparation method of a fluorine-containing anticorrosive material comprises the following specific steps:
(1) firstly, bisphenol A epoxy resin is grafted and modified by trifluoroethyl methacrylate to obtain modified epoxy resin;
(2) then mixing 4.5kg of high-density polyethylene, 3kg of modified epoxy resin, 0.55kg of polytetrafluoroethylene reclaimed material and 0.06kg of nano zirconia fiber at 50 ℃ for 45 minutes to obtain a mixed material;
(3) and then, the mixture is extruded and pulled into strips, cut and granulated to obtain particles with the particle size of 1.5mm, then 0.6kg of the particles are added into 1.1kg of refined naphthalene-sodium treatment liquid, the mixture is subjected to ultrasonic oscillation at 400W for 20 minutes, filtered and dried to obtain modified particles, and the modified particles are crushed to 100 meshes to obtain the powdery fluorine-containing anticorrosive material.
The specific method of the step (1) is as follows:
(A) firstly, 1.1kg of bisphenol A epoxy resin and 2.3kg of butyl acetate are uniformly stirred and heated to 110 ℃, the temperature is kept and the stirring is carried out for 12 minutes, then 0.25kg of premixed solution (the premixed solution is obtained by mixing trifluoroethyl methacrylate and azobisisobutyronitrile according to the mass ratio of 2: 1) is dripped at the speed of 4mL/min while the stirring is carried out, the free radical polymerization reaction is carried out, and the heat is kept and the stirring is carried out for 55 minutes after the dripping is finished;
(B) and continuously dropwise adding 0.25kg of the premixed solution at the speed of 4mL/min, keeping the temperature and stirring for 85 minutes after dropwise adding, vacuumizing to remove the solvent to obtain a reaction product, adding n-butanol with the same mass into the reaction product, carrying out 400W ultrasonic oscillation for 6 minutes, and carrying out suction filtration to obtain the fluorine-containing acrylate graft modified epoxy resin.
In the step (2), the density of the high-density polyethylene is 0.96g/cm3The melt flow rate was 8g/10 min.
In the step (3), the preparation method of the refined naphthalene-sodium treatment solution comprises the following steps: under the protection of nitrogen and under the drying condition, 0.04kg of metal sodium, 0.75kg of refined naphthalene and 9.1kg of tetrahydrofuran are uniformly mixed to obtain the refined naphthalene-sodium treatment solution.
In the step (3), an extruder is used for extrusion operation, and the working temperature of the extruder is 230 ℃.
Comparative example 1
A preparation method of a fluorine-containing anticorrosive material comprises the following specific steps:
(1) firstly, bisphenol A epoxy resin is grafted and modified by trifluoroethyl methacrylate to obtain modified epoxy resin;
(2) then mixing 4kg of high-density polyethylene, 3.5kg of modified epoxy resin, 0.5kg of polytetrafluoroethylene reclaimed material and 0.08kg of nano zirconia fiber at 45 ℃ for 50 minutes to obtain a mixed material;
(3) and then, the mixture is extruded and pulled into strips, cut and granulated to obtain particles with the particle size of 1mm, then 0.7kg of the particles are added into 1kg of refined naphthalene-sodium treatment liquid, the mixture is subjected to 400W ultrasonic oscillation for 15 minutes, filtered and dried to obtain modified particles, and the modified particles are crushed to 100 meshes to obtain the powdery fluorine-containing anticorrosive material.
The specific method of the step (1) is as follows:
(A) firstly, 1kg of bisphenol A epoxy resin and 2.5kg of butyl acetate are stirred and mixed uniformly, the mixture is stirred and heated to 105 ℃, the temperature is kept and the stirring is carried out for 15 minutes, then 0.3kg of premixed solution (the premixed solution is obtained by mixing trifluoroethyl methacrylate and azobisisobutyronitrile according to the mass ratio of 2: 1) is added dropwise at the speed of 3mL/min while the stirring is carried out, the free radical polymerization reaction is carried out, and the heat is kept and the stirring is carried out for 50 minutes after the dropwise addition is finished;
(B) and continuously dropwise adding 0.2kg of the premixed solution at the speed of 5mL/min, keeping the temperature and stirring for 90 minutes after dropwise adding, vacuumizing to remove the solvent to obtain a reaction product, adding n-butanol with the same mass into the reaction product, carrying out 300W ultrasonic oscillation for 8 minutes, and carrying out suction filtration to obtain the fluorine-containing acrylate graft modified epoxy resin.
In the step (2), the density of the high-density polyethylene is 0.95g/cm3The melt flow rate was 9g/10 min.
In the step (3), the preparation method of the refined naphthalene-sodium treatment solution comprises the following steps: under the protection of nitrogen and under the drying condition, 0.03kg of metal sodium, 0.8kg of refined naphthalene and 9kg of tetrahydrofuran are uniformly mixed to obtain the refined naphthalene-sodium treatment solution.
In the step (3), an extruder is used for carrying out extrusion operation, and the working temperature of the extruder is 240 ℃.
The anticorrosive materials obtained in the embodiments 1-3 and the comparative example are respectively used for carrying out anticorrosive treatment on steel, and the specific treatment method comprises the following steps:
firstly, washing impurities and stains on the surface of the steel by using 300Kpa pressure water for 10 minutes, then, polishing by using sand paper, and uniformly polishing projections on the surface of the steel to obtain pretreated steel; then, the electrostatic spray gun is used for spraying the pretreated steel, the spraying voltage is 70kV, the spraying air pressure is 0.5MPa, the spraying current is 20 muA, the spraying thickness is 30μm, and the steel is cured for 60 minutes at 195 ℃ after the spraying is finished.
Considering the antiseptic treatment effect, wherein the adhesion refers to GB/T1720-79 (89), the antiseptic effect refers to GB/T9274-.
TABLE 1 Effect examination of anticorrosive materials
As can be seen from Table 1, the anticorrosive materials obtained in examples 1 to 3 have good adhesion to the surface of steel, good anticorrosive effect on acid-base salts, and good heat resistance, and can be used for corrosion protection of steel.
The modified epoxy resin is replaced by the epoxy resin, the particle modification step is omitted, the adhesion of the obtained anticorrosive material is deteriorated, and the heat resistance and the anticorrosive effect are obviously deteriorated, so that the modified epoxy resin and the particle surface modification treatment have synergistic effect, the adhesion of the anticorrosive material is improved, and the heat resistance and the anticorrosive effect are improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The preparation method of the fluorine-containing anticorrosive material is characterized by comprising the following specific steps of:
(1) carrying out grafting modification on bisphenol A type epoxy resin by trifluoroethyl methacrylate to obtain modified epoxy resin;
(2) mixing high-density polyethylene, the modified epoxy resin obtained in the step (1), a polytetrafluoroethylene reclaimed material and nano zirconia fiber to obtain a mixed material;
(3) and extruding the mixture into strips, cutting and granulating to obtain particles, then carrying out modification treatment on the particles by using refined naphthalene-sodium treatment liquid to obtain modified particles, and crushing to 80-100 meshes to obtain the powdery fluorine-containing anticorrosive material.
2. The preparation method according to claim 1, wherein the specific method of step (1) is as follows, in parts by weight:
(A) firstly, stirring and uniformly mixing 10-12 parts of bisphenol A epoxy resin and 22-25 parts of butyl acetate, stirring and heating to 105-115 ℃, preserving heat and stirring for 10-15 minutes, then slowly dropwise adding a premixed solution consisting of trifluoroethyl methacrylate and azobisisobutyronitrile while stirring, carrying out free radical polymerization reaction, and preserving heat and stirring for 50-60 minutes after dropwise adding is finished;
(B) and continuously and slowly dripping 2-3 parts of the premixed solution, preserving heat and stirring for 80-90 minutes after dripping is finished, and performing post-treatment to obtain the fluorine-containing acrylate grafted modified epoxy resin.
3. The method according to claim 1, wherein the mass ratio of trifluoroethyl methacrylate to azobisisobutyronitrile in the premix is 2: 1.
4. the preparation method according to claim 1, wherein in the step (2), the mass ratio of the high-density polyethylene, the modified epoxy resin, the polytetrafluoroethylene reclaimed material and the nano zirconia fiber is 40-50: 25-35: 5-6: 0.5 to 0.8.
5. The method according to claim 1, wherein in the step (2), the high density polyethylene has a density of 0.95 to 0.97g/cm3The melt flow rate is 6-9 g/10 min.
6. The preparation method according to claim 1, wherein in the step (2), the mixing process conditions are as follows: mixing at 45-55 ℃ for 40-50 minutes.
7. The preparation method according to claim 1, wherein in the step (3), the specific method of modification treatment is as follows: adding 5-7 parts of particles into 10-12 parts of refined naphthalene-sodium treatment solution, carrying out 300-400W ultrasonic oscillation for 15-25 minutes, filtering, and drying to obtain modified particles.
8. The method according to claim 1, wherein the refined naphthalene-sodium treatment solution is prepared by the following method in step (3) in parts by weight: and (3) under the protection of nitrogen and under the drying condition, uniformly mixing 0.3-0.5 part of metal sodium, 7-8 parts of refined naphthalene and 90-92 parts of tetrahydrofuran to obtain the refined naphthalene-sodium treatment solution.
9. The method according to claim 1, wherein the step (3) comprises extruding with an extruder having a working temperature of 220 to 240 ℃.
10. A fluorine-containing anticorrosive material obtained by the preparation method according to any one of claims 1 to 9.
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| CN115368782A (en) * | 2022-09-27 | 2022-11-22 | 肖建江 | Preparation method of corrosion-resistant hydrophobic anticorrosive material |
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