CN115247022B - High-corrosion-resistance neodymium iron boron rolling spray coating composition, and preparation method and application thereof - Google Patents
High-corrosion-resistance neodymium iron boron rolling spray coating composition, and preparation method and application thereof Download PDFInfo
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- CN115247022B CN115247022B CN202210672681.0A CN202210672681A CN115247022B CN 115247022 B CN115247022 B CN 115247022B CN 202210672681 A CN202210672681 A CN 202210672681A CN 115247022 B CN115247022 B CN 115247022B
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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
- C09D163/04—Epoxynovolacs
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
Abstract
The invention relates to the technical field of C09D127/16, in particular to a high-corrosion-resistance neodymium iron boron rolling paint composition, a preparation method and application thereof. The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: resin, curing agent, silane coupling agent, curing catalyst, solvent and leveling agent; the resin comprises a phenolic epoxy resin. The high corrosion resistant neodymium iron boron rolling spray coating composition provided by the invention has the advantages that the solvent in the coating composition volatilizes moderately in the spraying application process, the solidification speed is high, the coating composition sprayed on the surface of a neodymium iron boron part forms a certain film layer, the film layer has certain strength, a large number of parts cannot be adhered in the rolling and spraying processes, cannot be scratched with each other, cannot generate a grinding angle, can be continuously sprayed to a calibrated thickness, and can form a coating with uniform thickness, smooth appearance and high corrosion resistance after being solidified by an oven.
Description
Technical Field
The invention relates to the technical field of C09D127/16, in particular to a high-corrosion-resistance neodymium iron boron rolling spray coating composition, a preparation method and application thereof
Background
At present, there are two coating processes for small-specification components made of small-specification neodymium iron boron magnetic steel in the market: one is to put the parts on a tray, spray one surface by using a coating machine by using a conventional epoxy paint, and spray the other surface by turning over after solidification; this approach is very inefficient when spraying small parts; the other is a half-rolling spraying process, namely a conventional epoxy coating is used for rolling spraying a small-size product, but because the conventional epoxy coating is easy to adhere and angle-grinding in the rolling spraying process, only a rolling spraying process is performed, then the product is taken out for solidification, then the product is put into a rolling spraying machine for spraying, and the solidification mode is taken out and repeated for 3-6 times so as to reach the required film thickness; the half-roll spraying process has higher efficiency than the first placing spraying mode, but is still not ideal, for example, the film thickness is required to be 20 microns, the film thickness can not exceed 3 microns each time, otherwise, the half-roll spraying process is easy to adhere together, and corners of parts can be ground due to too thick wet film of a coating, and the strength is insufficient.
Therefore, development of the special rolling spray coating for the small-specification neodymium iron boron magnet is a main technical problem to be solved at present, and has great economic value.
Disclosure of Invention
In order to solve the problems, the invention provides a high corrosion-resistant NdFeB (neodymium iron boron) rolling paint composition, which comprises the following preparation raw materials in parts by weight: 21-39 parts of resin, 3-12 parts of curing agent, 0.8-1.5 parts of silane coupling agent, 0.1-1 part of curing catalyst, 45-67 parts of solvent and 0.2-1 part of leveling agent; the resin comprises a phenolic epoxy resin.
As examples of the novolac epoxy resin, there may be cited liquid novolac epoxy resin, solid novolac epoxy resin, and examples of the liquid novolac epoxy resin include novolac epoxy resin CYDBN-240E, novolac epoxy resin CYDCN-200, and novolac epoxy resin F51, but are not limited thereto; the solid phenolic epoxy resin can be exemplified by phenolic epoxy resin CYDCN-200, phenolic epoxy resin CYDCN-205 and phenolic epoxy resin CYDCN-208; solid phenolic epoxy resins are preferred.
The viscosity of the phenolic epoxy resin CYDBN-240E at 25 ℃ is 700-1300mPa.s, and the manufacturer is Baling petrochemical.
The viscosity of the phenolic epoxy resin CYDCN-200 is 12000-15000mPa.s at 25 ℃, and the manufacturer is Baling petrochemical.
The viscosity of the phenolic epoxy resin F51 at 25 ℃ is 12000-20000mPa.s, and a purchasing manufacturer is Shanghai Sail chemical technology Co.
The softening point of the phenolic epoxy resin CYDCN-200 is 60-75 ℃, and the manufacturer is Baling petrochemical.
The softening point of the phenolic epoxy resin CYDCN-205 is 55-63 ℃, and the manufacturer is Baling petrochemical.
The softening point of the phenolic epoxy resin CYDCN-208 is 80-95 ℃, and the manufacturer is Baling petrochemical.
Preferably, the curing agent is selected from one or more of polyamide, phenolic amine and aromatic amine.
Further, the curing agent is phenolic amine.
As examples of phenolic amine, there may be mentioned Cardelan X-2016, T-31, CYDHD-531.
The viscosity of the Cardelaunay NX-2016 is 10000-18000mPa.s at 25 ℃.
The card delaunay NX-2016 is purchased from Shenzhen Wenula chemical materials Co.
The viscosity of the T-31 at 25 ℃ is 500-2000mPa.s.
The purchase manufacturer of the T-31 is Chemie chemical industry Co., guangzhou City
The viscosity of the CYDHD-531 is less than or equal to 500mPa.s at 25 ℃.
The purchase manufacturer of the CYDHD-531 is Baling petrochemical.
Preferably, the curing catalyst is selected from one or more of alkyl sulfonic acid, amino-containing alkyl phenol compound, organic titanium compound, nitrogen-containing organic compound, fatty amine compound.
Preferably, the alkyl sulfonic acid comprises methyl sulfonic acid.
Preferably, the amino-containing alkylphenol compound comprises 2,4, 6-tris (dimethylaminomethyl) phenol.
As examples of the 2,4, 6-tris (dimethylaminomethyl) phenol, DMP-30 may be cited, but is not limited thereto.
The viscosity of the DMP-30 at 25 ℃ is 40-80mPa.s, and the manufacturer is Basoff, germany.
The weight ratio of the curing catalyst to the curing agent to the phenolic epoxy resin is (0.1-1.0): (6-10): (12-18).
In order to improve the strength of a coating film obtained when the corrosion-resistant neodymium iron boron roll spray coating composition is used, the inventor unexpectedly found in experiments that when solid phenolic epoxy resin is selected, phenolic amine is selected as a curing agent, the curing speed of resin can be improved in the spraying process of the roll spray coating composition obtained by using 2,4, 6-tris (dimethylaminomethyl) phenol as a curing catalyst, so that the sprayed coating film has certain strength, and the sprayed coating film is excessively free of corner grinding, and the possible reasons are that phenolic amine and 2,4, 6-tris (dimethylaminomethyl) phenol are matched and mixed with phenolic epoxy resin, and particularly the weight ratio of 2,4, 6-tris (dimethylaminomethyl) phenol, phenolic amine and phenolic epoxy resin is (0.1-1.0): (6-10): and (12-18), the curing speed of the phenolic epoxy resin can be regulated, the strength of a coating film obtained by the spray coating composition in use is improved, and the surface of the NdFeB part is free from corner grinding in the spraying process.
Preferably, the resin further comprises polyvinylidene fluoride resin.
Preferably, the polyvinylidene fluoride has a melting point of 156-175 ℃.
Examples of the polyvinylidene fluoride resin include DS201, DS203, and DS204.
The melt index of DS201 at 230 ℃ and 10kg is 0.5-2g/10min, and the melting point is 156-165 ℃.
The melt index of DS203 at 230 ℃ and 2.16kg is 5-15g/10min, and the melting point is 165-175 ℃.
The DS204B has a melt index of 2-7g/10min at 230 ℃ and a melting point of 165-175 ℃ under 5 kg.
The manufacturer of DS201 is Shandong China Shenzhou New Material Co.
The manufacturer of DS203 is Shandong China Shenzhou New Material Co.
The manufacturer of DS204B is Shandong China Shenzhou New Material Co.
In order to improve the anti-blocking property of the corrosion-resistant neodymium iron boron roll spray coating composition and the toughness of a coating film in use, the inventor unexpectedly found that the problem that the softening and the surface film layer adhesion between parts cannot occur in the process of forming the film layer along with the volatilization of a solvent is solved by matching the polyvinylidene fluoride resin with the phenolic epoxy resin, particularly selecting the polyvinylidene fluoride resin with the melt index of 5-15g/10min at 230 ℃ and the melting point of 165-175 ℃ and the phenolic epoxy resin with the softening point of 60-75 ℃ in the process of volatilizing the solvent, and the possible reasons are that the melting point of the polyvinylidene fluoride resin is high, the glass transition temperature value is also high, the molecular chain segments in the polyvinylidene fluoride resin and the phenolic epoxy resin can be mutually penetrated in a cross-linking network formed in the curing process of the solvent volatilizing process, the film layer has certain film strength formed on the surface of the part, and the corrosion resistance of the film layer is improved.
Preferably, the solvent is selected from one or more of dimethyl sulfoxide, N-dimethylformamide, acetone, propylene glycol dimethyl ether, 1, 3-dimethyl-2-imidazolidinone, N-dimethylacetamide.
The weight ratio of the N, N-dimethylformamide to the propylene glycol dimethyl ether is (45-57): (2-10).
In order to improve the solubility of polyvinylidene fluoride resin and adjust the volatility of the solvent in the neodymium iron boron rolling spray coating composition with high corrosion resistance and improve the anti-blocking property, the inventor unexpectedly found that the solvent is selected from N, N-dimethylformamide and propylene glycol dimethyl ether for matching use, and the weight ratio of the N, N-dimethylformamide to the propylene glycol dimethyl ether is (45-57): (2-10), the prepared high corrosion-resistant neodymium iron boron rolling spray coating composition has better resin solubility and quick solvent volatility, and probably because the N, N-dimethylformamide and propylene glycol dimethyl ether are matched for use, the high corrosion-resistant neodymium iron boron rolling spray coating composition has better solubility to vinylidene fluoride resin and phenolic epoxy resin, has certain coupling effect with other raw materials in the raw materials, and adjusts the volatilization speed.
Preferably, the silane coupling agent is selected from one or more of gamma-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, methacryloxypropyl trimethoxysilane and gamma-mercaptopropyl trimethoxysilane.
Further, the silane coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
The high corrosion resistance neodymium iron boron rolling spray coating composition is prepared from the following raw materials in percentage by weight.
The pigment is carbon black color paste.
The leveling agent is polyether silicone oil.
The invention provides a preparation method of a high corrosion-resistant NdFeB (neodymium iron boron) rolling spray coating composition, which comprises the following steps:
s1, stirring resin, a solvent, a silane coupling agent and a leveling agent to obtain a composition a;
s2, mixing a curing catalyst and a curing agent to obtain the composition b.
The third aspect of the invention provides an application of a high corrosion-resistant neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts, comprising the following steps:
A1. mixing the composition a and the composition b, and then adding a solvent for dilution;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 80-100 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled to be 1.5mL-3.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 10-30 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box to be 160-200 ℃, and preserving the heat for 30-60min.
Advantageous effects
The high corrosion resistant neodymium iron boron rolling spray coating composition provided by the invention has the advantages that the solvent in the coating composition volatilizes moderately in the spraying application process, the solidification speed is high, the coating composition sprayed on the surface of a neodymium iron boron part forms a certain film layer, the film layer has certain strength, a large number of parts cannot be adhered in the rolling and spraying processes, cannot be scratched with each other, cannot generate a grinding angle, can be continuously sprayed to a calibrated thickness, and can form a coating with uniform thickness, smooth appearance and high corrosion resistance after being solidified by an oven.
According to the invention, phenolic amine, 2,4, 6-tris (dimethylaminomethyl) phenol and phenolic epoxy resin are mixed for use, so that the curing speed of the phenolic epoxy resin can be regulated, the strength of a coating film obtained by the spray coating composition in use is improved, and the surface of a neodymium iron boron part is free from corner grinding in the spraying process.
According to the invention, the toughness of the coating composition forming a film layer on the surface of a neodymium iron boron part can be improved by selecting and using the polyvinylidene fluoride resin with the melting point of 165-175 ℃ and the phenolic epoxy resin with the softening point of 60-75 ℃ under the condition that the melt index is 5-15g/10min at 230 ℃ and 2.16kg, and the problems of softening and surface film adhesion between parts can not occur in the curing process of the film layer along with the volatilization of a solvent
According to the invention, the N, N-dimethylformamide and propylene glycol dimethyl ether are used in a matched manner, so that the solubility of polyvinylidene fluoride resin is improved, the volatility of a solvent in the high corrosion-resistant NdFeB roll-coating composition is regulated, and the problem of blocking resistance is improved.
Detailed Description
Example 1
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 6 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 57.3 parts of N, N-dimethylformamide, 10 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. And taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 200 ℃, and preserving the heat for 30min.
Example 2
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 9 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 54.3 parts of N, N-dimethylformamide, 10 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 60min.
Example 3
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 12 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 54.3 parts of N, N-dimethylformamide, 7 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
S1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 100 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 4
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 54.3 parts of N, N-dimethylformamide, 4 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 5
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 18 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 51.3 parts of N, N-dimethylformamide, 4 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. Mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 6
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 21 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 50.3 parts of N, N-dimethylformamide, 2 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. The spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 7
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 3 parts of phenolic amine, 53.3 parts of N, N-dimethylformamide, 10 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 8
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 5 parts of phenolic amine, 56.3 parts of N, N-dimethylformamide, 5 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
S1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 9
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 54.3 parts of N, N-dimethylformamide, 4 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 10
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 12 parts of phenolic amine, 50.3 parts of N, N-dimethylformamide, 4 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. Mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 11
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 53.3 parts of N, N-dimethylformamide, 5 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidyl ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil and 2 parts of carbon black color paste.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, using phenolic amine as the composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 12
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 53.4 parts of N, N-dimethylformamide, 5 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.1 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 13
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 54.3 parts of N, N-dimethylformamide, 4 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.2 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. Mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Example 14
The high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following preparation raw materials in parts by weight: 15 parts of polyvinylidene fluoride resin, 15 parts of phenolic epoxy resin, 8 parts of phenolic amine, 54.1 parts of N, N-dimethylformamide, 4 parts of propylene glycol dimethyl ether, 1 part of gamma-glycidol ether oxypropyl trimethoxy silane, 0.5 part of polyether silicone oil, 2 parts of carbon black color paste and 0.4 part of 2, -4, -6-tris (dimethylaminomethyl) phenol.
The phenolic epoxy resin is CYDCN-200, and the manufacturer is Baling petrochemical.
The polyvinylidene fluoride resin is DS203 in model number, and the manufacturer is Shandong China Shenzhou New material Co.
The phenolic amine is of the type of Kadelai NX-2016, and the manufacturer is Shenzhen Wenuhua chemical material Co.
The manufacturer of the 2,4, 6-tris (dimethylaminomethyl) phenol is Basoff, germany, and the model is DMP-30.
The manufacturer of N, N-Dimethylformamide (DMF) is Basoff.
The carbon black color paste purchasing manufacturer is Qingdao ancient road science and technology Co., ltd, and the model is Kelain carbon black color paste KA100-CN.
The manufacturer of the polyether silicone oil is Pick chemistry and the model is BYK-310.
A preparation method of a high corrosion resistance neodymium iron boron rolling spray coating composition comprises the following steps:
s1, adding polyvinylidene fluoride resin into N, N-dimethylformamide, heating to 95 ℃, and stirring until the polyvinylidene fluoride resin is dissolved to obtain a solution a;
s2, cooling the solution a to 38 ℃, adding phenolic epoxy resin, propylene glycol dimethyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane, polyether silicone oil and carbon black color paste, and stirring to obtain a composition a;
s3, mixing 2, -4, -6-tris (dimethylaminomethyl) phenol and phenolic amine to obtain a composition b.
The application of the high corrosion resistance neodymium iron boron rolling spray coating composition in the technical field of rolling spray of neodymium iron boron parts comprises the following steps:
A1. mixing the composition a and the composition b, and then diluting with N, N-dimethylformamide for 3 times;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 90 ℃;
A3. The spraying flow of the rolling spraying equipment is controlled at 2.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 20 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box at 180 ℃, and preserving the heat for 45min.
Performance testing
The testing method comprises the following steps: neodymium iron boron parts with the specification of phi 8 multiplied by 2mm and the number of 10000 sheets are placed in a roller of a roller spraying coating machine, the roller is inclined at 40 degrees, the mouth of the roller is semi-closed outwards and slowly rotates, the surface of each part is sprayed with 20um by adopting the neodymium iron boron roller spraying coating composition with high corrosion resistance and the application method prepared in examples 1 to 14, the roller spraying characteristics are recorded, and the adhesion and neutral salt fog resistance of the parts after spraying are tested, and the test results are shown in Table 1.
The adhesion test was performed using the test standard method of ASTM D3359-B adhesion hundred method.
The neutral salt spray resistance test is carried out by adopting a GB/T2423.17 salt spray test standard method.
TABLE 1
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Claims (5)
1. The high corrosion resistance neodymium iron boron rolling spray coating composition is characterized by comprising the following preparation raw materials in parts by weight: 21-39 parts of resin, 3-12 parts of curing agent, 0.8-1.5 parts of silane coupling agent, 0.1-1 part of curing catalyst, 45-67 parts of solvent and 0.2-1 part of leveling agent;
The resin comprises phenolic epoxy resin and polyvinylidene fluoride resin; the melt index of the polyvinylidene fluoride resin at 230 ℃ and 2.16kg is 5-15g/10min, and the melting point is 165-175 ℃;
the softening point of the phenolic epoxy resin is 60-75 ℃, and the viscosity of the phenolic epoxy resin is 12000-15000mPa.s at 25 ℃;
the weight ratio of the curing catalyst to the curing agent to the phenolic epoxy resin is (0.1-1.0): (6-10): (12-18);
the curing agent is phenolic aldehyde amine;
the curing catalyst is 2,4, 6-tris (dimethylaminomethyl) phenol.
2. The highly corrosion resistant neodymium iron boron roll spray coating composition of claim 1, wherein said solvent is selected from one or more of dimethyl sulfoxide, N-dimethylformamide, acetone, propylene glycol dimethyl ether, 1, 3-dimethyl-2-imidazolidinone, N-dimethylacetamide.
3. The highly corrosion resistant neodymium iron boron roll spray coating composition of claim 1, wherein said silane coupling agent is selected from one or more of gamma-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, methacryloxypropyl trimethoxysilane, gamma-mercaptopropyl trimethoxysilane.
4. A method of preparing a highly corrosion resistant neodymium iron boron roll spray coating composition according to any one of claims 1 to 3, comprising the steps of:
S1, stirring resin, a solvent, a silane coupling agent and a leveling agent to obtain a composition a;
s2, mixing a curing catalyst and a curing agent to obtain the composition b.
5. Use of a highly corrosion resistant neodymium iron boron roll spray coating composition according to any of claims 1 to 3 in the field of roll spray technology for neodymium iron boron components, comprising the steps of: the method comprises the following steps:
A1. stirring the resin, the solvent, the silane coupling agent and the leveling agent to obtain a composition a, mixing the curing catalyst and the curing agent to obtain a composition b, and adding the solvent for dilution;
A2. placing the neodymium iron boron part into a roll spraying device, and heating to 80-100 ℃;
A3. the spraying flow of the rolling spraying equipment is controlled to be 1.5mL-3.5mL/min, and the rolling spraying equipment sprays the film to the film thickness of 10-30 micrometers;
A4. and taking out the NdFeB part, moving the NdFeB part into a heating box for solidification, controlling the temperature of the heating box to be 160-200 ℃, and preserving the heat for 30-60min.
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| CN101379109A (en) * | 2006-03-21 | 2009-03-04 | 真空融化两合公司 | Paint composition, in particular anti-corrosive paint for rare earth permanent magnets |
| KR20160057139A (en) * | 2014-11-13 | 2016-05-23 | 현대모비스 주식회사 | The composite of coating agent for magnetic materials surface treatment and surface treatment method by using thereof |
| CN105602408A (en) * | 2016-02-29 | 2016-05-25 | 东北大学 | Fluorine-containing metal coating on surface of NdFeB rare-earth permanent magnet and preparation method of fluorine-containing metal coating |
| CN106752730A (en) * | 2017-01-22 | 2017-05-31 | 安徽菱湖漆股份有限公司 | A kind of high solid epoxy feed pipe inner surface anticorrosion paint and preparation method thereof |
| CN112759989A (en) * | 2021-02-22 | 2021-05-07 | 窗明新材料科技(深圳)有限公司 | Anti-condensation coating and preparation method and application thereof |
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