CN111410896A - Two-component special resin primer and preparation method thereof - Google Patents
Two-component special resin primer and preparation method thereof Download PDFInfo
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- CN111410896A CN111410896A CN202010316919.7A CN202010316919A CN111410896A CN 111410896 A CN111410896 A CN 111410896A CN 202010316919 A CN202010316919 A CN 202010316919A CN 111410896 A CN111410896 A CN 111410896A
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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
- 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
- C08G59/44—Amides
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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
- C09D5/002—Priming paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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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
- C09D5/10—Anti-corrosive paints containing metal dust
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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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a two-component special resin primer and a preparation method thereof, wherein the two-component special resin primer comprises a component A and a component B, the component A comprises epoxy resin, phenolic resin, dimethylbenzene, butanol, iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, ferrotitanium powder, barium sulfate, aluminium tripolyphosphate, first-grade zinc oxide, 3000-mesh talcum powder, a dispersing agent and 8900 polyamide wax, and the component B comprises cashew nut oil modified polyamide 650 curing agent, dimethylbenzene and butanol. The invention takes epoxy resin and phenolic resin as a coating matrix, and adopts cashew nut oil modified polyamide 650 curing agent to react and cure the coating matrix and the filler during construction, so that the curing agent can still perform curing reaction in a construction environment at the temperature lower than 5 ℃, thereby ensuring the surface drying and actual drying time of the coating required by the industry in a severe temperature environment. The invention has potential market value.
Description
Technical Field
The invention relates to the field of coatings for rail transit vehicles, in particular to a two-component special resin primer and a preparation method thereof.
Background
Epoxy anticorrosion primer is frequently used as an anticorrosion coating in rail transit vehicles, the main component of the anticorrosion coating is epoxy resin which is mainly synthesized by epoxy chloropropane and bisphenol A and has a linear molecular structure, hydroxyl and epoxy groups in the structure react with a curing agent to be cured, a polyamide curing agent is a curing agent commonly used in the epoxy anticorrosion primer, but the low-temperature curing effect of the polyamide curing agent is poor, the polyamide curing agent basically does not react when the temperature is lower than 5 ℃, the actual drying time of the primer cannot exceed 24h and the actual production cannot exceed 16h according to the requirements of the standard TB/T2260-2001 of the Ministry of railways, so the construction coating requirement of the epoxy anticorrosion primer under the severe temperature condition cannot be met by using the common polyamide curing agent.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a two-component special resin primer capable of meeting construction requirements under severe temperature conditions and a preparation method thereof.
The technical scheme of the invention is as follows: a two-component special resin primer comprises a component A and a component B, wherein the component A comprises epoxy resin, phenolic resin, dimethylbenzene, butanol, iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, ferrotitanium powder, barium sulfate, aluminum tripolyphosphate, primary zinc oxide, 3000-mesh talcum powder, a dispersing agent and 8900 polyamide wax, and the component B comprises cashew nut oil modified polyamide 650 curing agent, dimethylbenzene and butanol.
Further, the mass ratio of the component A to the component B is 4-6: 1.
furthermore, the component A comprises, by mass, 32-42 parts of epoxy resin, 8-10 parts of phenolic resin, 7-14 parts of xylene, 2-4 parts of butanol, 8-12 parts of iron oxide yellow, 0.4-1 part of rutile titanium dioxide, 0.8-1.5 parts of organic bentonite, 5-8 parts of zinc phosphate, 4-7 parts of iron titanium powder, 4-8 parts of barium sulfate, 3-5 parts of aluminum tripolyphosphate, 6-8 parts of primary zinc oxide, 8-12 parts of 3000-mesh talcum powder, 0.05-0.15 part of a dispersing agent and 1.5-2.5 parts of 8900 polyamide wax.
Furthermore, the component B comprises, by mass, 58-68 parts of cashew nut oil modified polyamide 650 curing agent, 20-30 parts of xylene and 10-15 parts of butanol.
Further, the component A comprises, by mass, 37 parts of epoxy resin, 9 parts of phenolic resin, 10.5 parts of xylene, 3 parts of butanol, 10 parts of iron oxide yellow, 0.7 part of rutile titanium dioxide, 1.15 parts of organic bentonite, 6.5 parts of zinc phosphate, 5.5 parts of ferrotitanium powder, 6 parts of barium sulfate, 4 parts of aluminum tripolyphosphate, 7 parts of primary zinc oxide, 10 parts of 3000-mesh talcum powder, 0.1 part of dispersing agent and 2 parts of 8900 polyamide wax.
Furthermore, the component B comprises 63 parts by weight of cashew nut oil modified polyamide 650 curing agent, 25 parts by weight of xylene and 12.5 parts by weight of butanol.
Further, the preparation method of the two-component special resin primer comprises the following steps:
(1) preparing an epoxy resin solution: adding dimethylbenzene and butanol into a reaction kettle with a heating device, stirring and adding epoxy resin, keeping the temperature of the reaction kettle at 60 ℃, stirring for 3 hours, uniformly dissolving and filtering; (2) preparing phenolic resin liquid: putting dimethylbenzene into a tank, stirring, adding phenolic resin, uniformly dissolving and filtering; (3) sequentially adding epoxy resin liquid and phenolic resin liquid into a mixing tank, then adding iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, iron titanium powder, barium sulfate, aluminum tripolyphosphate, primary zinc oxide and a dispersing agent, and stirring for 30 min; (4) grinding in a grinder with grinding fineness less than or equal to 30 um; (5) adding 8900 polyamide wax and 3000 mesh talcum powder, stirring at high speed for 40min to disperse completely, adjusting viscosity with residual xylene and butanol, filtering after viscosity is qualified, and packaging; (6) adding dimethylbenzene and butanol into a mixing tank, stirring, slowly adding cashew nut oil modified polyamide 650 curing agent, homogenizing, filtering and packaging.
Furthermore, the concentration of the epoxy resin in the epoxy resin liquid is 60%, and the mass concentration of the phenolic resin in the phenolic resin liquid is 60%.
Further, the high-speed stirring speed of the step (5) is 1500 rpm/min.
Further, the epoxy resin is 601 epoxy resin, and the phenolic resin is 210 phenolic resin.
The invention comprises the following main components:
601 epoxy resin: the 601 epoxy resin not only has certain flexibility and salt mist resistance, but also has good mechanical property, and can be organically combined with phenolic resin. The molecular skeleton of the epoxy resin mainly comprises carbon-carbon bonds and ether bonds, the chemical property is stable, a compact cross-linked network structure is formed after curing, and the permeability of water vapor and oxygen to a paint film is extremely low, so that the paint film has excellent heat resistance, solvent resistance and chemical resistance.
210 phenolic resin: the phenolic resin is added into the epoxy resin, so that the number of epoxy groups participating in reaction in unit mass of the resin is increased, the crosslinking density of a coating system is improved, the coating system has better chemical resistance, the drying performance is improved, the permeation rate of water, oxygen and other ions is greatly reduced after the crosslinking density of the coating system is improved, and the corrosion to a substrate can be effectively slowed down.
Cashew nut oil modified polyamide 650 curing agent: the cashew nut oil modified polyamide 650 curing agent is fast cured and can well react at low temperature curing (below 0 ℃), and the surface drying and actual drying time of a coating in a severe temperature environment can be ensured.
The invention has the following effects: the epoxy resin and the phenolic resin are adopted as the matrix of the coating, and can be subjected to curing reaction with the cashew nut oil modified polyamide 650 curing agent under severe temperature construction conditions, so that the generated coating has excellent flexibility, corrosion resistance and mechanical properties, is not cracked or fallen, and can meet the requirements of vibration, wind and sand impact, temperature difference change of running environment, alternation of damp and heat, frequent cleaning of vehicles and the like during high-speed running of rail transit vehicles. The invention has potential market value.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
A two-component special resin primer comprises a component A and a component B, wherein the component A comprises epoxy resin, phenolic resin, dimethylbenzene, butanol, iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, ferrotitanium powder, barium sulfate, aluminum tripolyphosphate, primary zinc oxide, 3000-mesh talcum powder, a dispersing agent and 8900 polyamide wax, and the component B comprises cashew nut oil modified polyamide 650 curing agent, dimethylbenzene and butanol. The epoxy resin is 601 epoxy resin, and the phenolic resin is 210 phenolic resin. The mass ratio of the component A to the component B is 4: 1.
furthermore, the component A comprises, by mass, 32 parts of epoxy resin, 8 parts of phenolic resin, 7 parts of xylene, 2 parts of butanol, 8 parts of iron oxide yellow, 0.4 part of rutile titanium dioxide, 0.8 part of organic bentonite, 5 parts of zinc phosphate, 4 parts of iron titanium powder, 4 parts of barium sulfate, 3 parts of aluminum tripolyphosphate, 6 parts of primary zinc oxide, 8 parts of 3000-mesh talcum powder, 0.05 part of dispersing agent and 1.5 parts of 8900 polyamide wax.
Furthermore, the component B comprises 58 parts by weight of cashew nut oil modified polyamide 650 curing agent, 20 parts by weight of xylene and 10 parts by weight of butanol.
Further, the preparation method of the two-component special resin primer comprises the following steps:
(1) preparing an epoxy resin solution: adding dimethylbenzene and butanol into a reaction kettle with a heating device, stirring and adding epoxy resin, keeping the temperature of the reaction kettle at 60 ℃, stirring for 3 hours, uniformly dissolving and filtering; (2) preparing phenolic resin liquid: putting dimethylbenzene into a tank, stirring, adding phenolic resin, uniformly dissolving and filtering; (3) sequentially adding epoxy resin liquid and phenolic resin liquid into a mixing tank, then adding iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, iron titanium powder, barium sulfate, aluminum tripolyphosphate, primary zinc oxide and a dispersing agent, and stirring for 30 min; (4) grinding in a grinder with grinding fineness less than or equal to 30 um; (5) adding 8900 polyamide wax and 3000 mesh talcum powder, stirring at high speed for 40min to disperse completely, adjusting viscosity with residual xylene and butanol, filtering after viscosity is qualified, and packaging; (6) adding dimethylbenzene and butanol into a mixing tank, stirring, slowly adding cashew nut oil modified polyamide 650 curing agent, homogenizing, filtering and packaging.
Furthermore, the concentration of the epoxy resin in the epoxy resin liquid is 60%, and the mass concentration of the phenolic resin in the phenolic resin liquid is 60%. The high-speed stirring speed of the step (5) is 1500 rpm/min.
Example 2
Example 2 is substantially the same as example 1, except that the component A comprises, by mass, 37 parts of epoxy resin, 9 parts of phenolic resin, 10.5 parts of xylene, 3 parts of butanol, 10 parts of iron oxide yellow, 0.7 part of rutile titanium dioxide, 1.15 parts of organic bentonite, 6.5 parts of zinc phosphate, 5.5 parts of ferrotitanium powder, 6 parts of barium sulfate, 4 parts of aluminum tripolyphosphate, 7 parts of primary zinc oxide, 10 parts of 3000-mesh talc, 0.1 part of a dispersant, and 2 parts of 8900 polyamide wax.
Example 3
Example 3 is substantially the same as example 1, except that the component A comprises 42 parts by weight of epoxy resin, 10 parts by weight of phenolic resin, 14 parts by weight of xylene, 4 parts by weight of butanol, 12 parts by weight of iron oxide yellow, 1 part by weight of rutile titanium dioxide, 1.5 parts by weight of organic bentonite, 8 parts by weight of zinc phosphate, 7 parts by weight of ferrotitanium powder, 8 parts by weight of barium sulfate, 5 parts by weight of aluminum tripolyphosphate, 8 parts by weight of primary zinc oxide, 12 parts by weight of 3000-mesh talc powder, 0.15 part by weight of dispersant and 2.5 parts by weight of 8900 polyamide wax.
Example 4
Example 4 is basically the same as example 2, except that the component B comprises 63 parts by weight of cashew oil modified polyamide 650 curing agent, 25 parts by weight of xylene and 12.5 parts by weight of butanol.
Example 5
The embodiment 5 is basically the same as the embodiment 2, except that the component B comprises 68 parts by mass of cashew nut oil modified polyamide 650 curing agent, 30 parts by mass of xylene and 15 parts by mass of butanol.
Example 6
Example 5 is substantially the same as example 2, except that the mass ratio of the component a to the component b is 5: 1.
example 7
Example 5 is substantially the same as example 2, except that the mass ratio of the component a to the component b is 6: 1.
comparative example 1
Comparative example 1 is essentially the same as example 2 except that the phenolic resin is not included and is replaced with an epoxy resin.
Comparative example 2
Comparative example 2 is substantially the same as example 2 except that the cashew oil-modified polyamide 650 curing agent was replaced with a polyamide 650 curing agent.
Comparative example 3
Comparative example 3 is a commercially available epoxy anti-corrosive primer.
Experimental conditions
(1) Basic Performance test
Examples 1 to 7 and comparative examples 1 to 3 were tested as shown in Table 1, and Table 1 shows the respective test methods and indices. Table 2 shows the test results of examples 1 to 7 and comparative examples 1 to 3.
Table 1 shows the respective test methods and index conditions
Table 2 is a test result table
As can be seen from Table 2, the comparative example 1 has longer surface drying and actual drying time and has no bending property, salt spray resistance and cupping test results as compared with the examples 1-7 because no phenolic resin is contained, the polyamide 650 curing agent of the comparative example 2 has obviously increased surface drying and actual drying time because no cashew nut oil is used for modifying, the bending property, the salt spray resistance, the grid test and the cupping test results are obviously inferior to the examples 1-7, the comparative example 3 is an epoxy anticorrosion primer commonly used in the market, and the various properties are obviously inferior to the examples 1-7.
(2) Low temperature cure test
The surface dry and solid dry tests at low temperature of 5 ℃ and 0 ℃ are carried out by using the example 2 and the comparative example 2, the test results are shown in the table 3,
table 3 shows the results of the low temperature surface dry and solid dry tests
| Test of | Example 2 | Comparative example 2 |
| Surface drying at 5 ℃ h | 1.5 | 6 |
| Solid drying at 5 ℃ h | 16 | 30 |
| Surface drying at 0 ℃ h | 2 | 8 |
| Solid drying at 0 ℃ h | 20 | 35 |
As can be seen from Table 3, in example 2, the curing agent of cashew nut oil modified polyamide 650 is used, so that the surface drying and actual drying time at the low temperature of 5 ℃ and 0 ℃ is less than that of the curing agent of polyamide 650 used in comparative example 2, because cashew nut oil is grafted on the curing agent of polyamide 650 through chemical reaction, and cashew nut oil has phenolic hydroxyl which is weakly acidic and has catalytic action on the crosslinking reaction of epoxy and amine, so that the paint film is dried quickly and can be cured at a lower temperature.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization of those skilled in the art; where combinations of features are mutually inconsistent or impractical, such combinations should not be considered as being absent and not within the scope of the claimed invention.
Claims (10)
1. A two-component special resin primer comprises a component A and a component B, and is characterized in that: the component A comprises epoxy resin, phenolic resin, dimethylbenzene, butanol, iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, iron titanium powder, barium sulfate, aluminum tripolyphosphate, primary zinc oxide, 3000-mesh talcum powder, a dispersing agent and 8900 polyamide wax, and the component B comprises cashew nut oil modified polyamide 650 curing agent, dimethylbenzene and butanol.
2. The two-component special resin primer according to claim 1, which is characterized in that: the mass ratio of the component A to the component B is 4-6: 1.
3. the two-component special resin primer according to claim 1 or 2, characterized in that: the component A comprises, by mass, 32-42 parts of epoxy resin, 8-10 parts of phenolic resin, 7-14 parts of xylene, 2-4 parts of butanol, 8-12 parts of iron oxide yellow, 0.4-1 part of rutile titanium dioxide, 0.8-1.5 parts of organic bentonite, 5-8 parts of zinc phosphate, 4-7 parts of ferrotitanium powder, 4-8 parts of barium sulfate, 3-5 parts of aluminum tripolyphosphate, 6-8 parts of primary zinc oxide, 8-12 parts of 3000-mesh talcum powder, 0.05-0.15 part of a dispersing agent and 1.5-2.5 parts of 8900 polyamide wax.
4. The two-component special resin primer according to claim 1 or 2, characterized in that: the component B comprises 58-68 parts by mass of cashew nut oil modified polyamide 650 curing agent, 20-30 parts by mass of dimethylbenzene and 10-15 parts by mass of butanol.
5. The two-component special resin primer according to claim 3, which is characterized in that: the component A comprises, by mass, 37 parts of epoxy resin, 9 parts of phenolic resin, 10.5 parts of xylene, 3 parts of butanol, 10 parts of iron oxide yellow, 0.7 part of rutile titanium dioxide, 1.15 parts of organic bentonite, 6.5 parts of zinc phosphate, 5.5 parts of ferrotitanium powder, 6 parts of barium sulfate, 4 parts of aluminum tripolyphosphate, 7 parts of primary zinc oxide, 10 parts of 3000-mesh talcum powder, 0.1 part of dispersant and 2 parts of 8900 polyamide wax.
6. The two-component special resin primer according to claim 4, which is characterized in that: the component B comprises 63 parts of cashew nut oil modified polyamide 650 curing agent, 25 parts of xylene and 12.5 parts of butanol by weight.
7. The method for preparing the two-component special resin primer according to claim 1, which is characterized by comprising the following steps:
(1) preparing an epoxy resin solution: adding dimethylbenzene and butanol into a reaction kettle with a heating device, stirring and adding epoxy resin, keeping the temperature of the reaction kettle at 60 ℃, stirring for 3 hours, uniformly dissolving and filtering;
(2) preparing phenolic resin liquid: putting dimethylbenzene into a tank, stirring, adding phenolic resin, uniformly dissolving and filtering;
(3) sequentially adding epoxy resin liquid and phenolic resin liquid into a mixing tank, then adding iron oxide yellow, rutile titanium dioxide, organic bentonite, zinc phosphate, iron titanium powder, barium sulfate, aluminum tripolyphosphate, primary zinc oxide and a dispersing agent, and stirring for 30 min;
(4) grinding in a grinder with grinding fineness less than or equal to 30 um;
(5) adding 8900 polyamide wax and 3000 mesh talcum powder, stirring at high speed for 40min to disperse completely, adjusting viscosity with residual xylene and butanol, filtering after viscosity is qualified, and packaging;
(6) adding dimethylbenzene and butanol into a mixing tank, stirring, slowly adding cashew nut oil modified polyamide 650 curing agent, homogenizing, filtering and packaging.
8. The method for preparing the two-component special resin primer according to claim 7, wherein the method comprises the following steps: the concentration of epoxy resin in the epoxy resin liquid is 60%, and the mass concentration of phenolic resin in the phenolic resin liquid is 60%.
9. The method for preparing the two-component special resin primer according to claim 7, wherein the method comprises the following steps: the high-speed stirring speed of the step (5) is 1500 rpm/min.
10. The two-component special resin primer according to claim 1, which is characterized in that: the epoxy resin is 601 epoxy resin, and the phenolic resin is 210 phenolic resin.
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Application publication date: 20200714 |