CN107722792B - Preparation method of epoxy resin coating with high corrosion resistance - Google Patents
Preparation method of epoxy resin coating with high corrosion resistance Download PDFInfo
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- CN107722792B CN107722792B CN201711110779.2A CN201711110779A CN107722792B CN 107722792 B CN107722792 B CN 107722792B CN 201711110779 A CN201711110779 A CN 201711110779A CN 107722792 B CN107722792 B CN 107722792B
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
- C07F7/1876—Preparation; Treatments not provided for in C07F7/20 by reactions involving the formation of Si-C linkages
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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
- 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
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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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
Abstract
The invention discloses a preparation method of an epoxy resin coating with high anti-corrosion performance, and belongs to the technical field of anti-corrosion coatings. Preparing 2- (3, 4-epoxy cyclohexyl) Ethyl Triethoxysilane (ETEO) by adopting a hydrosilylation reaction, and performing surface modification on the nano silicon dioxide by utilizing the ETEO; ETEO modified nano SiO using epoxy resin as coating substrate2As filler and Polyamide (PA) as curing agent, to prepare epoxy resin coating. The ETEO of the invention carries out surface modification on the nano silicon dioxide to lead the nano particles to show lipophilicity, can be uniformly dispersed in the epoxy resin, improves the interface compatibility between the filler and the epoxy resin, increases the shielding effect, simultaneously leads the coating to be more compact, reduces the diffusion channel of a corrosive medium and inhibits the progress of a corrosion reaction process, and leads the coating to have high corrosion resistance.
Description
Technical Field
The invention belongs to the technical field of anticorrosive coatings, and relates to a preparation method of an epoxy resin coating added with modified nano silicon dioxide, so that the anticorrosive performance of the epoxy resin coating is improved.
Background
Carbon steel is the most widely used metal substrate in the world at present, but carbon steel is easily corroded by moisture and oxygen under atmospheric conditions, and the application and development of the carbon steel are severely limited. The organic coating and the metal coating have excellent barrier property and cathodic protection to prevent the carbon steel from being damaged by corrosion. Among them, the excellent adhesion of epoxy resin (EP) formed into a coating is a popular one for other organic coatings and is also the most widely used anticorrosive coating in the world. However, the epoxy resin can generate phenomena of bubbling and shedding of the coating in the use process, thereby influencing the protective effect of the coating on the metal matrix. Therefore, modifying epoxy resin to enhance the corrosion resistance of the coating is one of the important research directions of epoxy resin coatings.
A large number of studies and scientific experiments at home and abroad show that the nano material has excellent performance and is widely applied to epoxy resin coatings to improve the corrosion resistance of the coatings. Nano silica has many advantages of high hardness, low refractive index, low price, etc., and is therefore often used as a filler for coatings. The coating added with the nano silicon dioxide has excellent wear resistance, high transparency and considerable cost, and has great development prospect. However, the surface of the nano-silica has a plurality of hydroxyl groups, so that the surface of the nano-silica is hydrophilic, and the nano-silica is added into the coating to cause the conditions of agglomeration, precipitation and the like, and the problems of poor storage property and even failure of the coating can be caused.
Disclosure of Invention
Aiming at the problems in the background art, the invention aims to modify nano silicon dioxide by using a silane coupling agent with a novel structure and add the nano silicon dioxide into an epoxy resin matrix to prepare a coating with more excellent anti-corrosion performance on the surface of carbon steel in order to improve the anti-corrosion performance of an epoxy resin coating.
According to the preparation method of the epoxy resin-nano silicon dioxide anticorrosion coating, the silane coupling agent with a novel structure is synthesized to modify the surface of the nano silicon dioxide, so that the problem of poor compatibility between the nano silicon dioxide and the epoxy resin is solved, the anticorrosion capability of the coating is improved, and the defects of failure, precipitation and the like of the coating in the daily storage process are avoided.
The following specific technical solutions are provided to solve the technical problems to be solved by the present invention.
A preparation method of epoxy resin coating with high corrosion resistance comprises the steps of preparing nano silicon dioxide particles modified by silane coupling agent and preparing composite epoxy resin coating;
the preparation of the silane coupling agent modified nano silicon dioxide particle comprises the following steps:
a. weighing 2- (3, 4-epoxy cyclohexyl) Ethyl Triethoxysilane (ETEO) as a silane coupling agent;
b. adding the nano silicon dioxide powder into absolute ethyl alcohol, and uniformly stirring and mixing to obtain a nano silicon dioxide-ethyl alcohol suspension;
c. adjusting the pH of the nano silicon dioxide-ethanol suspension to 2-3 in N2Dripping silane coupling agent and deionized water under atmosphere, reacting in 65 ℃ water bath for 6h to obtain the silane coupling agent after the reaction is finishedModified nanosilicon dioxide-ethanol suspension; wherein the mass ratio of the nano silicon dioxide to the silane coupling agent is 10: 5.3-5.5;
d. washing and centrifuging the silane coupling agent modified nano silicon dioxide-ethanol suspension, and drying in an oven at 60 ℃ for 24h to obtain silane coupling agent modified nano silicon dioxide powder (marked as ETEO-SiO)2)；
The preparation of the composite epoxy resin anticorrosion coating comprises the following steps:
e. dissolving 100 parts by mass of an epoxy resin (labeled as EP) in an organic solvent;
f. weighing 5 parts by mass of silane coupling agent modified nano silicon dioxide powder, adding the nano silicon dioxide powder into epoxy resin, and stirring the mixture for 30min in a high-speed shearing machine to obtain a uniformly mixed composite epoxy resin coating (marked as ETEO-SiO)2/EP)；
g. Adding 40-70 parts by mass of polyamide curing agent, 1-3 parts by mass of flatting agent and 2-5 parts by mass of defoaming agent into the composite epoxy resin coating; stirring the mixture under a high-speed shearing machine until the mixture is uniformly mixed, spraying the mixture on the surface of a cleaned steel plate, and curing the mixture for 4 hours at the temperature of 60 ℃ to obtain the epoxy resin coating with high corrosion resistance.
The epoxy resin coating with high corrosion resistance prepared by the method mainly comprises matrix epoxy resin, curing agent polyamide and filler 2- (3, 4-epoxy cyclohexane) Ethyl Triethoxysilane (ETEO) modified nano silicon dioxide. The coating after film forming has excellent corrosion resistance and excellent waterproof performance. The coating does not contain heavy metal, and is nontoxic and pollution-free after being cured. The 2- (3, 4-epoxy cyclohexyl) Ethyl Triethoxysilane (ETEO) -modified nano silicon dioxide has excellent compatibility in epoxy resin, and ensures the chemical stability of the coating.
The invention relates to a method capable of enhancing the compatibility of nano silicon dioxide particles in an organic matrix and fully exerting the anti-corrosion effect of the nano silicon dioxide particles. The method has simple preparation process and no pollution to environment. In particular, 2- (3, 4-epoxy cyclohexyl) Ethyl Triethoxysilane (ETEO) is used for modifying nano SiO so far2The technology has not been disclosed yetMoreover, the nano silicon dioxide powder modified by the silane coupling agent is not used as a filler to form a coating together with an epoxy resin matrix and a curing agent, and is used for improving the corrosion resistance of a carbon steel surface coating.
The 2- (3, 4-epoxycyclohexane) ethyltriethoxysilane (ETEO) as the silane coupling agent may be an existing product, but ETEO produced by the hydrosilylation reaction method of the present invention is more suitable for the coating of the present invention. The silane coupling agent of the present invention can be prepared by the following process: dissolving 1, 2-epoxy-4-vinylcyclohexane in toluene, and putting the solution into a container; in N2Adding Karstedt catalyst in the atmosphere, raising the reaction temperature to 60-65 ℃, dropwise adding triethoxysilane into the 1, 2-epoxy-4-vinylcyclohexane-toluene reaction solution, keeping stirring at a high speed for 6 hours after dropwise adding, and dissolving the reaction product in toluene; toluene is distilled in a rotating way to obtain 2- (3, 4-epoxy cyclohexyl) Ethyl Triethoxysilane (ETEO) colorless transparent liquid; wherein the mass ratio of the 1, 2-epoxy-4-vinylcyclohexane to the triethoxysilane is 5: 7.2-7.3, and the dosage of the Karstedt catalyst is 0.001% of the total mass of the reactants (1, 2-epoxy-4-vinylcyclohexane and triethoxysilane). The Karstedt catalyst component was 1, 3-divinyl-1, 1,3, 3-tetramethyldisiloxane platinum (0).
The method for preparing the 2- (3, 4-epoxy cyclohexyl) Ethyl Triethoxysilane (ETEO) belongs to the initiative, not only has simple process and lower preparation cost than the existing product, but also the ETEO is more suitable for preparing the epoxy resin coating, and has positive effect on improving the corrosion resistance of the epoxy resin coating.
In step b, the nano silicon dioxide powder is added into the absolute ethyl alcohol, and 20mL of absolute ethyl alcohol is preferably used per gram of nano silicon dioxide powder.
Preferably, glacial acetic acid is used for adjusting the pH in step c.
In step e, the organic solvent for dissolving the epoxy resin is a solution of dimethylbenzene compounded with n-butyl alcohol, and V in the solutionXylene:VN-butanol3: 1. In the step E, the epoxy resin can be selected from epoxy resin with the model number of E-51.
In the g step, the polyamide curing agent has a molecular weight of Mw650; the speed of the high speed shear may be set at 800 rpm.
The invention utilizes hydrosilylation reaction to prepare 2- (3, 4-epoxy cyclohexyl) ethyl triethoxysilane for modifying nano silicon dioxide, and utilizes the characteristic that organosilane molecules contain amphiphilic chemical groups, thereby not only modifying the surface of inorganic matter, but also carrying out chemical reaction with polymers or forming hydrogen bond action, modifying the surface of the nano silicon dioxide, and changing the surface from hydrophilicity to lipophilicity, thereby improving the interface compatibility between the nano silicon dioxide and an epoxy resin matrix. The preparation process is simple and environment-friendly, and solves the problem that the common filler has poor dispersibility in the coating material. Organic materials and inorganic materials are connected with each other by organic silane through chemical bond combination by using silane coupling agent as a link, interaction and solubility between filler and a coating matrix (epoxy resin) are enhanced, the shielding effect is increased, and the crosslinking density of the coating is increased at the same time, so that the coating is more compact, a diffusion channel of a corrosive medium is reduced, and the corrosion reaction process is inhibited, thereby achieving a more ideal anti-corrosion effect and effectively solving the failure problem of the epoxy resin coating in the storage process.
Drawings
FIG. 1 is a chart of a hydrogen nuclear magnetic resonance spectrum of 2- (3, 4-epoxycyclohexyl) ethyltriethoxysilane (ETEO) obtained in example 1: (1H-NMR) and the formula.
FIG. 2 is ETEO-SiO of example 22The synthetic mechanism diagram of (1).
FIG. 3 is ETEO-SiO obtained in example 22X-ray photoelectron spectroscopy (XPS). a is the total spectrum, b is the peak of C1s, C is the peak of O1 s, and d is the peak of Si2 p.
FIG. 4 is ETEO-SiO obtained in example 22With nano SiO2Macroscopic picture of sedimentation experiment of (1), in which nano SiO2In water and toluene are shown as a and b, respectively; ETEO-SiO2In water and toluene are panels c and d, respectively.
FIG. 5 is ETEO-SiO obtained in example 32EP, SiO obtained in example 42Comparative plot of electrochemical impedance spectra of EP and EP obtained in example 5, three coatings soaked in 3.5% NaCl solution for 500 hours.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
EXAMPLE 1 preparation of silane coupling agent 2- (3, 4-epoxycyclohexane) ethyltriethoxysilane
5g of 1, 2-epoxy-4-vinylcyclohexane was dissolved in an appropriate amount of toluene and charged into a 250ml three-necked flask. In N2Under the atmosphere, adding 10ppm Karstedt catalyst, raising the reaction temperature to 65 ℃, then dropwise adding 7.24g of triethoxysilane into the reaction solution, after dropwise adding, keeping high-speed stirring at 800 revolutions per minute for 6 hours, and dissolving the reaction product in toluene; toluene is distilled in a rotating way to obtain a target product of 2- (3, 4-epoxy cyclohexyl) ethyl triethoxysilane colorless transparent liquid.
FIG. 1 shows a chart of hydrogen nuclear magnetic resonance spectrum of 2- (3, 4-epoxycyclohexyl) ethyltriethoxysilane (ETEO) obtained in this example: (1H-NMR) and the formula. Delta 0.5 appearing in the product is-CH2-Si-, and 2- (3, 4-epoxycyclohexane) ethyltriethoxysilane.
Example 2 surface modification of nanosilica
10g of silica nanoparticles were stirred at high speed in 200ml of ethanol at room temperature. After the silicon dioxide is uniformly dispersed, adjusting the pH value of the nano silicon dioxide-ethanol suspension to 2-3 by using glacial acetic acid. In N2Slowly dripping 5.4g of silane coupling agent and a proper amount of deionized water into the nano silicon dioxide-ethanol suspension in the atmosphere, raising the temperature to 60 ℃ after dripping, and heating for 12 hours under the reflux condition. After the reaction is finished, centrifuging the ETEO-modified nano silicon dioxide-ethanol suspension for many times, washing with ethanol, and drying in a vacuum drying oven for 48h to obtain modified nano silicon dioxide particles (namely the ETEO-modified nano silicon dioxide powder marked as ETEO-SiO)2)。
As a silane coupling agent used in this example, 2- (3, 4-epoxycyclohexane) ethyltriethoxysilane obtained in the procedure of example 1 was used.
FIG. 2 shows ETEO-SiO of this example2The synthetic mechanism diagram of (1).
FIG. 3 shows ETEO-SiO prepared in this example2X-ray photoelectron spectroscopy (XPS). a is the total spectrum, b is the C1s peak, C is the O1 s peak, and d is the Si2p peak. FIG. 3 shows that the surface-treated nano-silica has characteristic peaks of C1s, O1 s and Si2p, and the occurrence of C-O-C, Si-C, C-O-C bonding positions proves the existence of the silane coupling agent and the successful preparation of the surface-modified nano-silica.
FIG. 4 shows the nano SiO2ETEO-SiO obtained in the example2Macroscopic picture of sedimentation experiment of (1), in which nano SiO2In water and toluene are shown as a and b, respectively; ETEO-SiO2In water and toluene are panels c and d, respectively. As can be seen from FIG. 4, the nanosilica (ETES-SiO) treated with the silane coupling agent2) The untreated nano SiO with more stability in dimethylbenzene2Is more stable in water. After the surface treatment, the hydrophobicity of the nano silicon dioxide is increased, and the nano silicon dioxide can stably exist in an organic solvent.
Example 3 preparation of epoxy resin composite coating
100g of epoxy resin is added into a proper amount of a compound solvent of n-butanol and xylene, 5g of ETEO modified nano silicon dioxide powder and 40-70 g of polyamide curing agent are respectively added, and the mixture is stirred at a high speed for 30 min. After stirring, spraying the steel plate, and then putting the steel plate into a 60 ℃ oven for curing for 4 hours to obtain the coating with the thickness of 80-100 microns.
In a compound solvent of n-butyl alcohol and xylene, 1-3 g of a flatting agent and 2-5 g of a defoaming agent can be added simultaneously with the addition of a curing agent.
The carbon steel substrate adopted in the experiment is a Q235 steel plate, and the size of the steel plate prepared by processing is as follows: 12cm by 5cm by 2 mm. Before use, the surface of the steel plate is cleaned by ethanol and dried in a vacuum drying oven.
Because the experimental coating matrix is epoxy resin, a compound solvent of xylene and n-butanol is selected, and the specific proportion is as follows according to the volume: xylene n-butanol-3: 1.
Example 4 comparative example-Nano SiO2The particles were not surface modified
100g of epoxy resin was added to an appropriate amount of solvent (n-butanol and xylene), and 5g of SiO were added to each of the two solutions2And stirring the nano particles and 40-70 g of polyamide curing agent at a high speed for 30 min. After stirring, spraying the steel plate, and then putting the steel plate into a 60 ℃ oven for curing for 4 hours to obtain the coating with the thickness of 80-100 microns.
The carbon steel substrate adopted in the experiment is a Q235 steel plate, and the size of the steel plate prepared by processing is as follows: 12cm by 5cm by 2 mm. Before use, the surface of the steel plate is cleaned by ethanol and dried in a vacuum drying oven.
The same solvent mixture of xylene and n-butanol as in example 3 was selected for the experiment.
Example 5: as a comparative example-without addition of Nano SiO2Granules
100g of epoxy resin was added to the appropriate solvent (n-butanol and xylene) without ETES-SiO addition2Nanoparticles, also without SiO addition2And (3) adding 40-70 g of polyamide curing agent into the nano particles, and stirring at a high speed for 30 min. After stirring, spraying the steel plate, and then putting the steel plate into a 60 ℃ oven for curing for 4 hours to obtain the coating with the thickness of 80-100 microns.
The carbon steel substrate used in the experiment and the cleaning treatment of the substrate were the same as those of examples 3 and 4.
The same xylene and n-butanol solvent as in example 3 was chosen for the experiment.
A comparison of the low frequency impedance modulus of the epoxy resin coated substrates of examples 4 and 5 with that of example 3 after immersion in 3.5% NaCl solution for 500 hours is given in FIG. 5. From FIG. 5 it can be seen that the low frequency impedance modulus of the three coatings at 500h soak time increases with soak time, and the EP coating of example 5 decreases to 6.4X 108Omega; SiO of example 42EP coating reduction to 4.4X 109Omega; and ETEO-SiO of example 32The EP coating still has a value of 3X 1010Omega or more. This result also shows that the ETEO-SiO of the present invention2the/EP coating can provide greater corrosion protection.
Claims (4)
1. A preparation method of epoxy resin coating with high corrosion resistance comprises the steps of preparing nano silicon dioxide particles modified by silane coupling agent and preparing composite epoxy resin coating;
the preparation of the silane coupling agent modified nano silicon dioxide particle comprises the following steps:
a. weighing 2- (3, 4-epoxy cyclohexyl) ethyl triethoxysilane as a silane coupling agent; the silane coupling agent is prepared by the following steps: dissolving 1, 2-epoxy-4-vinylcyclohexane in toluene, and putting the solution into a container; in N2Adding Karstedt catalyst in the atmosphere, raising the reaction temperature to 60-65 ℃, then dropwise adding triethoxysilane into the 1, 2-epoxy-4-vinylcyclohexane-toluene reaction solution, keeping stirring at a high speed for 6 hours after dropwise adding, and dissolving the reaction product in toluene; carrying out rotary distillation on toluene to obtain 2- (3, 4-epoxy cyclohexyl) ethyl triethoxysilane colorless transparent liquid; wherein the mass ratio of the 1, 2-epoxy-4-vinylcyclohexane to the triethoxysilane is 5: 7.2-7.3, and the using amount of the Karstedt catalyst is 0.001% of the total mass of the reactants;
b. adding the nano silicon dioxide powder into absolute ethyl alcohol, and uniformly stirring and mixing to obtain a nano silicon dioxide-ethyl alcohol suspension;
c. adjusting the pH of the nano silicon dioxide-ethanol suspension to 2-3 in N2Dripping a silane coupling agent and deionized water in the atmosphere, reacting for 6 hours in a water bath at 65 ℃, and obtaining a silane coupling agent modified nano silicon dioxide-ethanol suspension after the reaction is finished; wherein the mass ratio of the nano silicon dioxide to the silane coupling agent is 10: 5.3-5.5;
d. washing and centrifuging the silane coupling agent modified nano silicon dioxide-ethanol suspension, and drying in a 60 ℃ drying oven for 24h to obtain silane coupling agent modified nano silicon dioxide powder;
the preparation of the composite epoxy resin coating comprises the following steps:
e. dissolving 100 parts by mass of epoxy resin in an organic solvent;
f. weighing 5 parts by mass of silane coupling agent modified nano silicon dioxide powder, adding the nano silicon dioxide powder into epoxy resin, and stirring the mixture for 30min in a high-speed shearing machine to obtain a uniformly mixed composite epoxy resin coating;
g. adding 40-70 parts by mass of polyamide curing agent, 1-3 parts by mass of flatting agent and 2-5 parts by mass of defoaming agent into the composite epoxy resin coating; stirring until the mixture is uniformly mixed, spraying the mixture on the surface of a cleaned steel plate, and curing for 4 hours at the temperature of 60 ℃ to obtain the epoxy resin coating with high corrosion resistance.
2. The method for preparing the epoxy resin coating with high anticorrosion property according to claim 1, wherein in the step E, the epoxy resin is E-51; the organic solvent is a solution of dimethylbenzene compounded with n-butyl alcohol, and V is in the solutionXylene:VN-butanol＝3:1。
3. The method for preparing the epoxy resin coating with high anticorrosion property according to claim 1 or 2, wherein in the step c, the pH value is adjusted by glacial acetic acid.
4. The method for preparing an epoxy resin coating with high anticorrosion property as claimed in claim 1 or 2, wherein in the step g, the polyamide curing agent, molecular weight Mw＝650。
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| CN108753100B (en) * | 2018-05-03 | 2020-05-05 | 东南大学 | Water-based epoxy concrete repairing interface agent and preparation method thereof |
| CN109233562A (en) * | 2018-08-09 | 2019-01-18 | 苏州市泽镁新材料科技有限公司 | A kind of anticorrosive coating for metal surface |
| CN109749544A (en) * | 2018-12-27 | 2019-05-14 | 安徽伊法拉电力科技有限公司 | A kind of anticorrosive paint and preparation method thereof prepared by high voltage electricity transmission conductive wire modified manometer silicon dioxide |
| CN110229407A (en) * | 2019-06-26 | 2019-09-13 | 南京乐洁新型材料有限公司 | A kind of production technology of anticorrosion hollow spiral tube |
| CN110229182A (en) * | 2019-07-03 | 2019-09-13 | 北京航空航天大学 | A kind of organo-silicon coupling agent and preparation method thereof |
| CN112375944A (en) * | 2020-10-30 | 2021-02-19 | 宁波德业粉末冶金有限公司 | Compression valve seat for multifunctional oil leakage prevention hydraulic shock absorber |
| CN113636800A (en) * | 2021-06-29 | 2021-11-12 | 安徽华畅新型建材有限责任公司 | Anticorrosive anti-freeze anti-cracking reinforced concrete culvert pipe |
| CN113583543A (en) * | 2021-09-02 | 2021-11-02 | 苏州科技大学 | Preparation method and application of hydrophobic composite anti-corrosion coating |
| CN114196072B (en) * | 2021-12-15 | 2023-02-28 | 北京化工大学 | Preparation method of graphene/white carbon black hybrid filler |
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| CN103113712B (en) * | 2013-02-04 | 2015-04-01 | 广东科富科技股份有限公司 | Preparation method and application of modified nano-silicon dioxide toughened epoxy resin |
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